HCoop / bpt / emacs.git / blame
| Commit | Line | Data |
|---|---|---|
| 737e3892 | 1 | ;;; emerge.el --- merge diffs under Emacs control |
| 151e4b9c | 2 | |
| 737e3892 RS |
3 | ;;; The author has placed this file in the public domain. |
| 4 | ||
| 5 | ;; Author: Dale R. Worley <drw@math.mit.edu> | |
| 6 | ;; Version: 5fsf | |
| 7 | ;; Keywords: unix, tools | |
| 151e4b9c RS |
8 | |
| 9 | ;; This software was created by Dale R. Worley and is | |
| 10 | ;; distributed free of charge. It is placed in the public domain and | |
| 11 | ;; permission is granted to anyone to use, duplicate, modify and redistribute | |
| 12 | ;; it provided that this notice is attached. | |
| 13 | ||
| 14 | ;; Dale R. Worley provides absolutely NO WARRANTY OF ANY KIND | |
| 15 | ;; with respect to this software. The entire risk as to the quality and | |
| 16 | ;; performance of this software is with the user. IN NO EVENT WILL DALE | |
| 17 | ;; R. WORLEY BE LIABLE TO ANYONE FOR ANY DAMAGES ARISING OUT THE | |
| 18 | ;; USE OF THIS SOFTWARE, INCLUDING, WITHOUT LIMITATION, DAMAGES RESULTING FROM | |
| 19 | ;; LOST DATA OR LOST PROFITS, OR FOR ANY SPECIAL, INCIDENTAL OR CONSEQUENTIAL | |
| 20 | ;; DAMAGES. | |
| 21 | ||
| 737e3892 | 22 | ;;; Code: |
| 3b4a6e27 | 23 | |
| 09113ea2 | 24 | ;;;###autoload |
| 1c5aa5b2 | 25 | (defvar menu-bar-emerge-menu (make-sparse-keymap "Emerge")) |
| 09113ea2 RS |
26 | ;;;###autoload |
| 27 | (fset 'menu-bar-emerge-menu (symbol-value 'menu-bar-emerge-menu)) | |
| 125ed9df | 28 | |
| 09113ea2 | 29 | ;;;###autoload |
| 125ed9df RS |
30 | (define-key menu-bar-emerge-menu [emerge-merge-directories] |
| 31 | '("Merge Directories ..." . emerge-merge-directories)) | |
| 09113ea2 | 32 | ;;;###autoload |
| 125ed9df RS |
33 | (define-key menu-bar-emerge-menu [emerge-revisions-with-ancestor] |
| 34 | '("Revisions with Ancestor ..." . emerge-revisions-with-ancestor)) | |
| 9343c8ee | 35 | ;;;###autoload |
| 125ed9df RS |
36 | (define-key menu-bar-emerge-menu [emerge-revisions] |
| 37 | '("Revisions ..." . emerge-revisions)) | |
| 09113ea2 | 38 | ;;;###autoload |
| 125ed9df RS |
39 | (define-key menu-bar-emerge-menu [emerge-files-with-ancestor] |
| 40 | '("Files with Ancestor ..." . emerge-files-with-ancestor)) | |
| 09113ea2 | 41 | ;;;###autoload |
| 125ed9df RS |
42 | (define-key menu-bar-emerge-menu [emerge-files] |
| 43 | '("Files ..." . emerge-files)) | |
| 09113ea2 | 44 | ;;;###autoload |
| 125ed9df RS |
45 | (define-key menu-bar-emerge-menu [emerge-buffers-with-ancestor] |
| 46 | '("Buffers with Ancestor ..." . emerge-buffers-with-ancestor)) | |
| 09113ea2 | 47 | ;;;###autoload |
| 125ed9df RS |
48 | (define-key menu-bar-emerge-menu [emerge-buffers] |
| 49 | '("Buffers ..." . emerge-buffers)) | |
| 50 | ||
| 3b4a6e27 JB |
51 | ;;; Macros |
| 52 | ||
| 53 | (defmacro emerge-eval-in-buffer (buffer &rest forms) | |
| 54 | "Macro to switch to BUFFER, evaluate FORMS, returns to original buffer. | |
| 737e3892 | 55 | Differs from `save-excursion' in that it doesn't save the point and mark." |
| 3b4a6e27 JB |
56 | (` (let ((StartBuffer (current-buffer))) |
| 57 | (unwind-protect | |
| 58 | (progn | |
| 59 | (set-buffer (, buffer)) | |
| 60 | (,@ forms)) | |
| 61 | (set-buffer StartBuffer))))) | |
| 62 | ||
| 63 | (defmacro emerge-defvar-local (var value doc) | |
| 737e3892 RS |
64 | "Defines SYMBOL as an advertised variable. |
| 65 | Performs a defvar, then executes `make-variable-buffer-local' on | |
| 66 | the variable. Also sets the `preserved' property, so that | |
| 67 | `kill-all-local-variables' (called by major-mode setting commands) | |
| 68 | won't destroy Emerge control variables." | |
| 3b4a6e27 JB |
69 | (` (progn |
| 70 | (defvar (, var) (, value) (, doc)) | |
| 71 | (make-variable-buffer-local '(, var)) | |
| 72 | (put '(, var) 'preserved t)))) | |
| 73 | ||
| 74 | ;; Add entries to minor-mode-alist so that emerge modes show correctly | |
| ff5f6ddd RS |
75 | (defvar emerge-minor-modes-list |
| 76 | '((emerge-mode " Emerge") | |
| 77 | (emerge-fast-mode " F") | |
| 78 | (emerge-edit-mode " E") | |
| 79 | (emerge-auto-advance " A") | |
| 80 | (emerge-skip-prefers " S"))) | |
| 3b4a6e27 JB |
81 | (if (not (assq 'emerge-mode minor-mode-alist)) |
| 82 | (setq minor-mode-alist (append emerge-minor-modes-list | |
| 83 | minor-mode-alist))) | |
| 84 | ||
| 85 | ;; We need to define this function so describe-mode can describe Emerge mode. | |
| 86 | (defun emerge-mode () | |
| 737e3892 RS |
87 | "Emerge mode is used by the Emerge file-merging package. |
| 88 | It is entered only through one of the functions: | |
| 89 | `emerge-files' | |
| 90 | `emerge-files-with-ancestor' | |
| 91 | `emerge-buffers' | |
| 92 | `emerge-buffers-with-ancestor' | |
| 93 | `emerge-files-command' | |
| 94 | `emerge-files-with-ancestor-command' | |
| 95 | `emerge-files-remote' | |
| 96 | `emerge-files-with-ancestor-remote' | |
| 3b4a6e27 JB |
97 | |
| 98 | Commands: | |
| 99 | \\{emerge-basic-keymap} | |
| 737e3892 RS |
100 | Commands must be prefixed by \\<emerge-fast-keymap>\\[emerge-basic-keymap] in `edit' mode, |
| 101 | but can be invoked directly in `fast' mode.") | |
| 3b4a6e27 | 102 | |
| 737e3892 | 103 | (defvar emerge-version "5fsf" |
| 3b4a6e27 JB |
104 | "The version of Emerge.") |
| 105 | ||
| 106 | (defun emerge-version () | |
| 737e3892 RS |
107 | "Return string describing the version of Emerge. |
| 108 | When called interactively, displays the version." | |
| 3b4a6e27 JB |
109 | (interactive) |
| 110 | (if (interactive-p) | |
| 111 | (message "Emerge version %s" (emerge-version)) | |
| 112 | emerge-version)) | |
| 113 | ||
| 114 | ;;; Emerge configuration variables | |
| 115 | ||
| 116 | ;; Commands that produce difference files | |
| 117 | ;; All that can be configured is the name of the programs to execute | |
| 118 | ;; (emerge-diff-program and emerge-diff3-program) and the options | |
| 119 | ;; to be provided (emerge-diff-options). The order in which the file names | |
| 120 | ;; are given is fixed. | |
| 121 | ;; The file names are always expanded (see expand-file-name) before being | |
| 122 | ;; passed to diff, thus they need not be invoked under a shell that | |
| 737e3892 | 123 | ;; understands `~'. |
| 3b4a6e27 JB |
124 | ;; The code which processes the diff/diff3 output depends on all the |
| 125 | ;; finicky details of their output, including the somewhat strange | |
| 126 | ;; way they number lines of a file. | |
| 127 | (defvar emerge-diff-program "diff" | |
| 128 | "*Name of the program which compares two files.") | |
| 129 | (defvar emerge-diff3-program "diff3" | |
| 737e3892 RS |
130 | "*Name of the program which compares three files. |
| 131 | Its arguments are the ancestor file and the two variant files.") | |
| 3b4a6e27 | 132 | (defvar emerge-diff-options "" |
| 737e3892 | 133 | "*Options to pass to `emerge-diff-program' and `emerge-diff3-program'.") |
| 3b4a6e27 JB |
134 | (defvar emerge-match-diff-line (let ((x "\\([0-9]+\\)\\(\\|,\\([0-9]+\\)\\)")) |
| 135 | (concat "^" x "\\([acd]\\)" x "$")) | |
| 737e3892 RS |
136 | "*Pattern to match lines produced by diff that describe differences. |
| 137 | This is as opposed to lines from the source files.") | |
| 661d3230 | 138 | (defvar emerge-diff-ok-lines-regexp |
| 3b4a6e27 | 139 | "^\\([0-9,]+[acd][0-9,]+$\\|[<>] \\|---\\)" |
| 737e3892 RS |
140 | "*Regexp that matches normal output lines from `emerge-diff-program'. |
| 141 | Lines that do not match are assumed to be error messages.") | |
| 661d3230 | 142 | (defvar emerge-diff3-ok-lines-regexp |
| 3b4a6e27 | 143 | "^\\([1-3]:\\|====\\| \\)" |
| 737e3892 RS |
144 | "*Regexp that matches normal output lines from `emerge-diff3-program'. |
| 145 | Lines that do not match are assumed to be error messages.") | |
| 3b4a6e27 | 146 | |
| 151e4b9c RS |
147 | (defvar emerge-rcs-ci-program "ci" |
| 148 | "*Name of the program that checks in RCS revisions.") | |
| 149 | (defvar emerge-rcs-co-program "co" | |
| 150 | "*Name of the program that checks out RCS revisions.") | |
| 151 | ||
| 152 | (defvar emerge-process-local-variables nil | |
| 737e3892 RS |
153 | "*Non-nil if Emerge should process local-variables lists in merge buffers. |
| 154 | \(You can explicitly request processing the local-variables | |
| 155 | by executing `(hack-local-variables)'.)") | |
| 151e4b9c | 156 | (defvar emerge-execute-line-deletions nil |
| 737e3892 RS |
157 | "*If non-nil: `emerge-execute-line' makes no output if an input was deleted. |
| 158 | It concludes that an input version has been deleted when an ancestor entry | |
| 159 | is present, only one A or B entry is present, and an output entry is present. | |
| 151e4b9c RS |
160 | If nil: In such circumstances, the A or B file that is present will be |
| 161 | copied to the designated output file.") | |
| 162 | ||
| ff5f6ddd RS |
163 | (defvar emerge-before-flag "vvvvvvvvvvvvvvvvvvvv\n" |
| 164 | "*Flag placed above the highlighted block of code. Must end with newline. | |
| 165 | Must be set before Emerge is loaded, or emerge-new-flags must be run | |
| 166 | after setting.") | |
| 167 | (defvar emerge-after-flag "^^^^^^^^^^^^^^^^^^^^\n" | |
| 168 | "*Flag placed below the highlighted block of code. Must end with newline. | |
| 169 | Must be set before Emerge is loaded, or emerge-new-flags must be run | |
| 170 | after setting.") | |
| 171 | ||
| 151e4b9c RS |
172 | ;; Hook variables |
| 173 | ||
| 737e3892 RS |
174 | (defvar emerge-startup-hook nil |
| 175 | "*Hook to run in the merge buffer after the merge has been set up.") | |
| 176 | (defvar emerge-select-hook nil | |
| 177 | "*Hook to run after a difference has been selected. | |
| 178 | The variable `n' holds the (internal) number of the difference.") | |
| 179 | (defvar emerge-unselect-hook nil | |
| 180 | "*Hook to run after a difference has been unselected. | |
| 181 | The variable `n' holds the (internal) number of the difference.") | |
| 151e4b9c RS |
182 | |
| 183 | ;; Variables to control the default directories of the arguments to | |
| 184 | ;; Emerge commands. | |
| 185 | ||
| 186 | (defvar emerge-default-last-directories nil | |
| 737e3892 | 187 | "*If nil, default dir for filenames in emerge is `default-directory'. |
| 151e4b9c | 188 | If non-nil, filenames complete in the directory of the last argument of the |
| 737e3892 | 189 | same type to an `emerge-files...' command.") |
| 151e4b9c RS |
190 | |
| 191 | (defvar emerge-last-dir-A nil | |
| 737e3892 | 192 | "Last directory for the first file of an `emerge-files...' command.") |
| 151e4b9c | 193 | (defvar emerge-last-dir-B nil |
| 737e3892 | 194 | "Last directory for the second file of an `emerge-files...' command.") |
| 151e4b9c | 195 | (defvar emerge-last-dir-ancestor nil |
| 737e3892 | 196 | "Last directory for the ancestor file of an `emerge-files...' command.") |
| 151e4b9c | 197 | (defvar emerge-last-dir-output nil |
| 737e3892 | 198 | "Last directory for the output file of an `emerge-files...' command.") |
| 151e4b9c | 199 | (defvar emerge-last-revision-A nil |
| 737e3892 | 200 | "Last RCS revision used for first file of an `emerge-revisions...' command.") |
| 151e4b9c | 201 | (defvar emerge-last-revision-B nil |
| 737e3892 | 202 | "Last RCS revision used for second file of an `emerge-revisions...' command.") |
| 151e4b9c | 203 | (defvar emerge-last-revision-ancestor nil |
| 737e3892 | 204 | "Last RCS revision used for ancestor file of an `emerge-revisions...' command.") |
| 151e4b9c | 205 | |
| ff5f6ddd RS |
206 | (defvar emerge-before-flag-length) |
| 207 | (defvar emerge-before-flag-lines) | |
| 208 | (defvar emerge-before-flag-match) | |
| 209 | (defvar emerge-after-flag-length) | |
| 210 | (defvar emerge-after-flag-lines) | |
| 211 | (defvar emerge-after-flag-match) | |
| 212 | (defvar emerge-diff-buffer) | |
| 213 | (defvar emerge-diff-error-buffer) | |
| 214 | (defvar emerge-prefix-argument) | |
| 215 | (defvar emerge-file-out) | |
| 216 | (defvar emerge-exit-func) | |
| 217 | (defvar emerge-globalized-difference-list) | |
| 218 | (defvar emerge-globalized-number-of-differences) | |
| 219 | ||
| 3b4a6e27 JB |
220 | ;; The flags used to mark differences in the buffers. |
| 221 | ||
| 222 | ;; These function definitions need to be up here, because they are used | |
| 223 | ;; during loading. | |
| 224 | (defun emerge-new-flags () | |
| 737e3892 RS |
225 | "Function to be called after `emerge-{before,after}-flag'. |
| 226 | This is called after these functions are changed to compute values that | |
| 227 | depend on the flags." | |
| 3b4a6e27 JB |
228 | (setq emerge-before-flag-length (length emerge-before-flag)) |
| 229 | (setq emerge-before-flag-lines | |
| 737e3892 | 230 | (emerge-count-matches-string emerge-before-flag "\n")) |
| 3b4a6e27 JB |
231 | (setq emerge-before-flag-match (regexp-quote emerge-before-flag)) |
| 232 | (setq emerge-after-flag-length (length emerge-after-flag)) | |
| 233 | (setq emerge-after-flag-lines | |
| 737e3892 | 234 | (emerge-count-matches-string emerge-after-flag "\n")) |
| 3b4a6e27 | 235 | (setq emerge-after-flag-match (regexp-quote emerge-after-flag))) |
| 737e3892 RS |
236 | |
| 237 | (defun emerge-count-matches-string (string regexp) | |
| 3b4a6e27 JB |
238 | "Return the number of matches in STRING for REGEXP." |
| 239 | (let ((i 0) | |
| 240 | (count 0)) | |
| 241 | (while (string-match regexp string i) | |
| 242 | (setq count (1+ count)) | |
| 243 | (setq i (match-end 0))) | |
| 244 | count)) | |
| 245 | ||
| 3b4a6e27 JB |
246 | ;; Calculate dependent variables |
| 247 | (emerge-new-flags) | |
| 248 | ||
| 249 | (defvar emerge-min-visible-lines 3 | |
| 250 | "*Number of lines that we want to show above and below the flags when we are | |
| 251 | displaying a difference.") | |
| 252 | ||
| 253 | (defvar emerge-temp-file-prefix | |
| 254 | (let ((env (getenv "TMPDIR")) | |
| 255 | d) | |
| 256 | (setq d (if (and env (> (length env) 0)) | |
| 257 | env | |
| 258 | "/tmp")) | |
| 259 | (if (= (aref d (1- (length d))) ?/) | |
| 260 | (setq d (substring d 0 -1))) | |
| 261 | (concat d "/emerge")) | |
| 262 | "*Prefix to put on Emerge temporary file names. | |
| 737e3892 | 263 | Do not start with `~/' or `~user-name/'.") |
| 3b4a6e27 JB |
264 | |
| 265 | (defvar emerge-temp-file-mode 384 ; u=rw only | |
| 266 | "*Mode for Emerge temporary files.") | |
| 267 | ||
| 268 | (defvar emerge-combine-versions-template | |
| 269 | "#ifdef NEW\n%b#else /* NEW */\n%a#endif /* NEW */\n" | |
| 737e3892 | 270 | "*Template for `emerge-combine-versions' to combine the two versions. |
| 3b4a6e27 JB |
271 | The template is inserted as a string, with the following interpolations: |
| 272 | %a the A version of the difference | |
| 273 | %b the B version of the difference | |
| 737e3892 | 274 | %% the character `%' |
| 3b4a6e27 JB |
275 | Don't forget to end the template with a newline. |
| 276 | Note that this variable can be made local to a particular merge buffer by | |
| 661d3230 | 277 | giving a prefix argument to `emerge-set-combine-versions-template'.") |
| 3b4a6e27 JB |
278 | |
| 279 | ;; Build keymaps | |
| 280 | ||
| 281 | (defvar emerge-basic-keymap nil | |
| 282 | "Keymap of Emerge commands. | |
| 737e3892 RS |
283 | Directly available in `fast' mode; |
| 284 | must be prefixed by \\<emerge-fast-keymap>\\[emerge-basic-keymap] in `edit' mode.") | |
| 3b4a6e27 JB |
285 | |
| 286 | (defvar emerge-fast-keymap nil | |
| 737e3892 | 287 | "Local keymap used in Emerge `fast' mode. |
| 3b4a6e27 JB |
288 | Makes Emerge commands directly available.") |
| 289 | ||
| ff5f6ddd RS |
290 | (defvar emerge-options-menu |
| 291 | (make-sparse-keymap "Options")) | |
| 292 | ||
| 293 | (defvar emerge-merge-menu | |
| 294 | (make-sparse-keymap "Merge")) | |
| 295 | ||
| 296 | (defvar emerge-move-menu | |
| 297 | (make-sparse-keymap "Move")) | |
| 298 | ||
| 737e3892 RS |
299 | (defvar emerge-command-prefix "\C-c\C-c" |
| 300 | "*Command prefix for Emerge commands in `edit' mode. | |
| 3b4a6e27 JB |
301 | Must be set before Emerge is loaded.") |
| 302 | ||
| 303 | ;; This function sets up the fixed keymaps. It is executed when the first | |
| 304 | ;; Emerge is done to allow the user maximum time to set up the global keymap. | |
| 305 | (defun emerge-setup-fixed-keymaps () | |
| 306 | ;; Set up the basic keymap | |
| 307 | (setq emerge-basic-keymap (make-keymap)) | |
| 308 | (suppress-keymap emerge-basic-keymap) ; this sets 0..9 to digit-argument and | |
| 309 | ; - to negative-argument | |
| 310 | (define-key emerge-basic-keymap "p" 'emerge-previous-difference) | |
| 311 | (define-key emerge-basic-keymap "n" 'emerge-next-difference) | |
| 312 | (define-key emerge-basic-keymap "a" 'emerge-select-A) | |
| 313 | (define-key emerge-basic-keymap "b" 'emerge-select-B) | |
| 314 | (define-key emerge-basic-keymap "j" 'emerge-jump-to-difference) | |
| 661d3230 | 315 | (define-key emerge-basic-keymap "." 'emerge-find-difference) |
| 3b4a6e27 | 316 | (define-key emerge-basic-keymap "q" 'emerge-quit) |
| adca3f58 | 317 | (define-key emerge-basic-keymap "\C-]" 'emerge-abort) |
| 3b4a6e27 JB |
318 | (define-key emerge-basic-keymap "f" 'emerge-fast-mode) |
| 319 | (define-key emerge-basic-keymap "e" 'emerge-edit-mode) | |
| 320 | (define-key emerge-basic-keymap "s" nil) | |
| 321 | (define-key emerge-basic-keymap "sa" 'emerge-auto-advance) | |
| 322 | (define-key emerge-basic-keymap "ss" 'emerge-skip-prefers) | |
| 323 | (define-key emerge-basic-keymap "l" 'emerge-recenter) | |
| 324 | (define-key emerge-basic-keymap "d" nil) | |
| 325 | (define-key emerge-basic-keymap "da" 'emerge-default-A) | |
| 326 | (define-key emerge-basic-keymap "db" 'emerge-default-B) | |
| 327 | (define-key emerge-basic-keymap "c" nil) | |
| 328 | (define-key emerge-basic-keymap "ca" 'emerge-copy-as-kill-A) | |
| 329 | (define-key emerge-basic-keymap "cb" 'emerge-copy-as-kill-B) | |
| 330 | (define-key emerge-basic-keymap "i" nil) | |
| 331 | (define-key emerge-basic-keymap "ia" 'emerge-insert-A) | |
| 332 | (define-key emerge-basic-keymap "ib" 'emerge-insert-B) | |
| 333 | (define-key emerge-basic-keymap "m" 'emerge-mark-difference) | |
| 334 | (define-key emerge-basic-keymap "v" 'emerge-scroll-up) | |
| 335 | (define-key emerge-basic-keymap "^" 'emerge-scroll-down) | |
| 336 | (define-key emerge-basic-keymap "<" 'emerge-scroll-left) | |
| 337 | (define-key emerge-basic-keymap ">" 'emerge-scroll-right) | |
| 338 | (define-key emerge-basic-keymap "|" 'emerge-scroll-reset) | |
| 339 | (define-key emerge-basic-keymap "x" nil) | |
| 340 | (define-key emerge-basic-keymap "x1" 'emerge-one-line-window) | |
| 3b4a6e27 JB |
341 | (define-key emerge-basic-keymap "xc" 'emerge-combine-versions) |
| 342 | (define-key emerge-basic-keymap "xC" 'emerge-combine-versions-register) | |
| 3b4a6e27 JB |
343 | (define-key emerge-basic-keymap "xf" 'emerge-file-names) |
| 344 | (define-key emerge-basic-keymap "xj" 'emerge-join-differences) | |
| 345 | (define-key emerge-basic-keymap "xl" 'emerge-line-numbers) | |
| 346 | (define-key emerge-basic-keymap "xm" 'emerge-set-merge-mode) | |
| 347 | (define-key emerge-basic-keymap "xs" 'emerge-split-difference) | |
| 348 | (define-key emerge-basic-keymap "xt" 'emerge-trim-difference) | |
| 349 | (define-key emerge-basic-keymap "xx" 'emerge-set-combine-versions-template) | |
| 350 | ;; Allow emerge-basic-keymap to be referenced indirectly | |
| 351 | (fset 'emerge-basic-keymap emerge-basic-keymap) | |
| 352 | ;; Set up the fast mode keymap | |
| 353 | (setq emerge-fast-keymap (copy-keymap emerge-basic-keymap)) | |
| 354 | ;; Allow prefixed commands to work in fast mode | |
| 355 | (define-key emerge-fast-keymap emerge-command-prefix 'emerge-basic-keymap) | |
| 356 | ;; Allow emerge-fast-keymap to be referenced indirectly | |
| 357 | (fset 'emerge-fast-keymap emerge-fast-keymap) | |
| 358 | ;; Suppress write-file and save-buffer | |
| 737e3892 RS |
359 | (substitute-key-definition 'write-file 'emerge-query-write-file |
| 360 | emerge-fast-keymap (current-global-map)) | |
| 361 | (substitute-key-definition 'save-buffer 'emerge-query-save-buffer | |
| ff5f6ddd RS |
362 | emerge-fast-keymap (current-global-map)) |
| 363 | ||
| 364 | (define-key emerge-basic-keymap [menu-bar] (make-sparse-keymap)) | |
| 365 | ||
| 366 | (define-key emerge-fast-keymap [menu-bar options] | |
| 367 | (cons "Options" emerge-options-menu)) | |
| 368 | (define-key emerge-fast-keymap [menu-bar merge] | |
| 369 | (cons "Merge" emerge-merge-menu)) | |
| 370 | (define-key emerge-fast-keymap [menu-bar move] | |
| 371 | (cons "Move" emerge-move-menu)) | |
| 372 | ||
| 373 | (define-key emerge-move-menu [emerge-scroll-reset] | |
| 374 | '("Scroll Reset" . emerge-scroll-reset)) | |
| 375 | (define-key emerge-move-menu [emerge-scroll-right] | |
| 376 | '("Scroll Right" . emerge-scroll-right)) | |
| 377 | (define-key emerge-move-menu [emerge-scroll-left] | |
| 378 | '("Scroll Left" . emerge-scroll-left)) | |
| 379 | (define-key emerge-move-menu [emerge-scroll-down] | |
| 380 | '("Scroll Down" . emerge-scroll-down)) | |
| 381 | (define-key emerge-move-menu [emerge-scroll-up] | |
| 382 | '("Scroll Up" . emerge-scroll-up)) | |
| 383 | (define-key emerge-move-menu [emerge-recenter] | |
| 384 | '("Recenter" . emerge-recenter)) | |
| 385 | (define-key emerge-move-menu [emerge-mark-difference] | |
| 386 | '("Mark Difference" . emerge-mark-difference)) | |
| 387 | (define-key emerge-move-menu [emerge-jump-to-difference] | |
| 388 | '("Jump To Difference" . emerge-jump-to-difference)) | |
| 389 | (define-key emerge-move-menu [emerge-find-difference] | |
| 390 | '("Find Difference" . emerge-find-difference)) | |
| 391 | (define-key emerge-move-menu [emerge-previous-difference] | |
| 392 | '("Previous Difference" . emerge-previous-difference)) | |
| 393 | (define-key emerge-move-menu [emerge-next-difference] | |
| 394 | '("Next Difference" . emerge-next-difference)) | |
| 395 | ||
| 396 | ||
| 397 | (define-key emerge-options-menu [emerge-one-line-window] | |
| 398 | '("One Line Window" . emerge-one-line-window)) | |
| 399 | (define-key emerge-options-menu [emerge-set-merge-mode] | |
| 400 | '("Set Merge Mode" . emerge-set-merge-mode)) | |
| 401 | (define-key emerge-options-menu [emerge-set-combine-template] | |
| 402 | '("Set Combine Template..." . emerge-set-combine-template)) | |
| 403 | (define-key emerge-options-menu [emerge-default-B] | |
| 404 | '("Default B" . emerge-default-B)) | |
| 405 | (define-key emerge-options-menu [emerge-default-A] | |
| 406 | '("Default A" . emerge-default-A)) | |
| 407 | (define-key emerge-options-menu [emerge-skip-prefers] | |
| 408 | '("Skip Prefers" . emerge-skip-prefers)) | |
| 409 | (define-key emerge-options-menu [emerge-auto-advance] | |
| 410 | '("Auto Advance" . emerge-auto-advance)) | |
| 411 | (define-key emerge-options-menu [emerge-edit-mode] | |
| 412 | '("Edit Mode" . emerge-edit-mode)) | |
| 413 | (define-key emerge-options-menu [emerge-fast-mode] | |
| 414 | '("Fast Mode" . emerge-fast-mode)) | |
| 415 | ||
| 416 | (define-key emerge-merge-menu [emerge-abort] '("Abort" . emerge-abort)) | |
| 417 | (define-key emerge-merge-menu [emerge-quit] '("Quit" . emerge-quit)) | |
| 418 | (define-key emerge-merge-menu [emerge-split-difference] | |
| 419 | '("Split Difference" . emerge-split-difference)) | |
| 420 | (define-key emerge-merge-menu [emerge-join-differences] | |
| 421 | '("Join Differences" . emerge-join-differences)) | |
| 422 | (define-key emerge-merge-menu [emerge-trim-difference] | |
| 423 | '("Trim Difference" . emerge-trim-difference)) | |
| 424 | (define-key emerge-merge-menu [emerge-combine-versions] | |
| 425 | '("Combine Versions" . emerge-combine-versions)) | |
| 426 | (define-key emerge-merge-menu [emerge-copy-as-kill-B] | |
| 427 | '("Copy B as Kill" . emerge-copy-as-kill-B)) | |
| 428 | (define-key emerge-merge-menu [emerge-copy-as-kill-A] | |
| 429 | '("Copy A as Kill" . emerge-copy-as-kill-A)) | |
| 430 | (define-key emerge-merge-menu [emerge-insert-B] | |
| 431 | '("Insert B" . emerge-insert-B)) | |
| 432 | (define-key emerge-merge-menu [emerge-insert-A] | |
| 433 | '("Insert A" . emerge-insert-A)) | |
| 434 | (define-key emerge-merge-menu [emerge-select-B] | |
| 435 | '("Select B" . emerge-select-B)) | |
| 436 | (define-key emerge-merge-menu [emerge-select-A] | |
| 437 | '("Select A" . emerge-select-A))) | |
| 438 | ||
| 3b4a6e27 JB |
439 | |
| 440 | ;; Variables which control each merge. They are local to the merge buffer. | |
| 441 | ||
| 442 | ;; Mode variables | |
| 443 | (emerge-defvar-local emerge-mode nil | |
| 444 | "Indicator for emerge-mode.") | |
| 445 | (emerge-defvar-local emerge-fast-mode nil | |
| 446 | "Indicator for emerge-mode fast submode.") | |
| 447 | (emerge-defvar-local emerge-edit-mode nil | |
| 448 | "Indicator for emerge-mode edit submode.") | |
| 449 | (emerge-defvar-local emerge-A-buffer nil | |
| 450 | "The buffer in which the A variant is stored.") | |
| 451 | (emerge-defvar-local emerge-B-buffer nil | |
| 452 | "The buffer in which the B variant is stored.") | |
| 453 | (emerge-defvar-local emerge-merge-buffer nil | |
| 454 | "The buffer in which the merged file is manipulated.") | |
| 455 | (emerge-defvar-local emerge-ancestor-buffer nil | |
| 456 | "The buffer in which the ancestor variant is stored, | |
| 457 | or nil if there is none.") | |
| 458 | ||
| 459 | (defconst emerge-saved-variables | |
| 460 | '((buffer-modified-p set-buffer-modified-p) | |
| 461 | buffer-read-only | |
| 462 | buffer-auto-save-file-name) | |
| 463 | "Variables and properties of a buffer which are saved, modified and restored | |
| 464 | during a merge.") | |
| 465 | (defconst emerge-merging-values '(nil t nil) | |
| 466 | "Values to be assigned to emerge-saved-variables during a merge.") | |
| 467 | ||
| 468 | (emerge-defvar-local emerge-A-buffer-values nil | |
| 469 | "Remembers emerge-saved-variables for emerge-A-buffer.") | |
| 470 | (emerge-defvar-local emerge-B-buffer-values nil | |
| 471 | "Remembers emerge-saved-variables for emerge-B-buffer.") | |
| 472 | ||
| 473 | (emerge-defvar-local emerge-difference-list nil | |
| 474 | "Vector of differences between the variants, and markers in the buffers to | |
| 475 | show where they are. Each difference is represented by a vector of seven | |
| 476 | elements. The first two are markers to the beginning and end of the difference | |
| 477 | section in the A buffer, the second two are markers for the B buffer, the third | |
| 478 | two are markers for the merge buffer, and the last element is the \"state\" of | |
| 479 | that difference in the merge buffer. | |
| 480 | A section of a buffer is described by two markers, one to the beginning of | |
| 481 | the first line of the section, and one to the beginning of the first line | |
| 482 | after the section. (If the section is empty, both markers point to the same | |
| 483 | point.) If the section is part of the selected difference, then the markers | |
| 484 | are moved into the flags, so the user can edit the section without disturbing | |
| 485 | the markers. | |
| 486 | The \"states\" are: | |
| 487 | A the merge buffer currently contains the A variant | |
| 488 | B the merge buffer currently contains the B variant | |
| 489 | default-A the merge buffer contains the A variant by default, | |
| 490 | but this difference hasn't been selected yet, so | |
| 491 | change-default commands can alter it | |
| 492 | default-B the merge buffer contains the B variant by default, | |
| 493 | but this difference hasn't been selected yet, so | |
| 494 | change-default commands can alter it | |
| eb8c3be9 | 495 | prefer-A in a three-file merge, the A variant is the preferred |
| 3b4a6e27 | 496 | choice |
| eb8c3be9 | 497 | prefer-B in a three-file merge, the B variant is the preferred |
| 3b4a6e27 JB |
498 | choice") |
| 499 | (emerge-defvar-local emerge-current-difference -1 | |
| 500 | "The difference that is currently selected.") | |
| 501 | (emerge-defvar-local emerge-number-of-differences nil | |
| 502 | "Number of differences found.") | |
| 503 | (emerge-defvar-local emerge-edit-keymap nil | |
| 504 | "The local keymap for the merge buffer, with the emerge commands defined in | |
| 505 | it. Used to save the local keymap during fast mode, when the local keymap is | |
| 506 | replaced by emerge-fast-keymap.") | |
| 507 | (emerge-defvar-local emerge-old-keymap nil | |
| 508 | "The original local keymap for the merge buffer.") | |
| 509 | (emerge-defvar-local emerge-auto-advance nil | |
| 510 | "*If non-nil, emerge-select-A and emerge-select-B automatically advance to | |
| 511 | the next difference.") | |
| 512 | (emerge-defvar-local emerge-skip-prefers nil | |
| 513 | "*If non-nil, differences for which there is a preference are automatically | |
| 514 | skipped.") | |
| 737e3892 | 515 | (emerge-defvar-local emerge-quit-hook nil |
| 3b4a6e27 | 516 | "Hooks to run in the merge buffer after the merge has been finished. |
| 737e3892 | 517 | `emerge-prefix-argument' will hold the prefix argument of the `emerge-quit' |
| 3b4a6e27 | 518 | command. |
| 737e3892 | 519 | This is *not* a user option, since Emerge uses it for its own processing.") |
| 3b4a6e27 | 520 | (emerge-defvar-local emerge-output-description nil |
| 737e3892 | 521 | "Describes output destination of emerge, for `emerge-file-names'.") |
| 3b4a6e27 JB |
522 | |
| 523 | ;;; Setup functions for two-file mode. | |
| 524 | ||
| 525 | (defun emerge-files-internal (file-A file-B &optional startup-hooks quit-hooks | |
| 526 | output-file) | |
| 151e4b9c | 527 | (if (not (file-readable-p file-A)) |
| 737e3892 | 528 | (error "File `%s' does not exist or is not readable" file-A)) |
| 151e4b9c | 529 | (if (not (file-readable-p file-B)) |
| 737e3892 | 530 | (error "File `%s' does not exist or is not readable" file-B)) |
| 3b4a6e27 JB |
531 | (let ((buffer-A (find-file-noselect file-A)) |
| 532 | (buffer-B (find-file-noselect file-B))) | |
| 151e4b9c RS |
533 | ;; Record the directories of the files |
| 534 | (setq emerge-last-dir-A (file-name-directory file-A)) | |
| 535 | (setq emerge-last-dir-B (file-name-directory file-B)) | |
| 536 | (if output-file | |
| 537 | (setq emerge-last-dir-output (file-name-directory output-file))) | |
| 3b4a6e27 | 538 | ;; Make sure the entire files are seen, and they reflect what is on disk |
| 151e4b9c RS |
539 | (emerge-eval-in-buffer |
| 540 | buffer-A | |
| 541 | (widen) | |
| 737e3892 RS |
542 | (let ((temp (file-local-copy file-A))) |
| 543 | (if temp | |
| 544 | (setq file-A temp | |
| 545 | startup-hooks | |
| 151e4b9c | 546 | (cons (` (lambda () (delete-file (, file-A)))) |
| 737e3892 RS |
547 | startup-hooks)) |
| 548 | ;; Verify that the file matches the buffer | |
| 549 | (emerge-verify-file-buffer)))) | |
| 151e4b9c RS |
550 | (emerge-eval-in-buffer |
| 551 | buffer-B | |
| 552 | (widen) | |
| 737e3892 RS |
553 | (let ((temp (file-local-copy file-B))) |
| 554 | (if temp | |
| 555 | (setq file-B temp | |
| 556 | startup-hooks | |
| 151e4b9c | 557 | (cons (` (lambda () (delete-file (, file-B)))) |
| 737e3892 RS |
558 | startup-hooks)) |
| 559 | ;; Verify that the file matches the buffer | |
| 560 | (emerge-verify-file-buffer)))) | |
| 3b4a6e27 JB |
561 | (emerge-setup buffer-A file-A buffer-B file-B startup-hooks quit-hooks |
| 562 | output-file))) | |
| 563 | ||
| 564 | ;; Start up Emerge on two files | |
| 565 | (defun emerge-setup (buffer-A file-A buffer-B file-B startup-hooks quit-hooks | |
| 566 | output-file) | |
| 567 | (setq file-A (expand-file-name file-A)) | |
| 568 | (setq file-B (expand-file-name file-B)) | |
| 569 | (setq output-file (and output-file (expand-file-name output-file))) | |
| 570 | (let* ((merge-buffer-name (emerge-unique-buffer-name "*merge" "*")) | |
| 571 | ;; create the merge buffer from buffer A, so it inherits buffer A's | |
| 572 | ;; default directory, etc. | |
| 573 | (merge-buffer (emerge-eval-in-buffer | |
| 574 | buffer-A | |
| 575 | (get-buffer-create merge-buffer-name)))) | |
| 576 | (emerge-eval-in-buffer | |
| 577 | merge-buffer | |
| 578 | (emerge-copy-modes buffer-A) | |
| 579 | (setq buffer-read-only nil) | |
| 580 | (auto-save-mode 1) | |
| 581 | (setq emerge-mode t) | |
| 582 | (setq emerge-A-buffer buffer-A) | |
| 583 | (setq emerge-B-buffer buffer-B) | |
| 584 | (setq emerge-ancestor-buffer nil) | |
| 585 | (setq emerge-merge-buffer merge-buffer) | |
| 586 | (setq emerge-output-description | |
| 587 | (if output-file | |
| 588 | (concat "Output to file: " output-file) | |
| 589 | (concat "Output to buffer: " (buffer-name merge-buffer)))) | |
| 590 | (insert-buffer emerge-A-buffer) | |
| 591 | (emerge-set-keys) | |
| 592 | (setq emerge-difference-list (emerge-make-diff-list file-A file-B)) | |
| 593 | (setq emerge-number-of-differences (length emerge-difference-list)) | |
| 594 | (setq emerge-current-difference -1) | |
| 737e3892 | 595 | (setq emerge-quit-hook quit-hooks) |
| 151e4b9c RS |
596 | (emerge-remember-buffer-characteristics) |
| 597 | (emerge-handle-local-variables)) | |
| 3b4a6e27 JB |
598 | (emerge-setup-windows buffer-A buffer-B merge-buffer t) |
| 599 | (emerge-eval-in-buffer merge-buffer | |
| 737e3892 | 600 | (run-hooks 'startup-hooks 'emerge-startup-hook) |
| 3b4a6e27 JB |
601 | (setq buffer-read-only t)))) |
| 602 | ||
| 603 | ;; Generate the Emerge difference list between two files | |
| 604 | (defun emerge-make-diff-list (file-A file-B) | |
| 605 | (setq emerge-diff-buffer (get-buffer-create "*emerge-diff*")) | |
| 606 | (emerge-eval-in-buffer | |
| 607 | emerge-diff-buffer | |
| 608 | (erase-buffer) | |
| 609 | (shell-command | |
| 610 | (format "%s %s %s %s" | |
| 151e4b9c RS |
611 | emerge-diff-program emerge-diff-options |
| 612 | (emerge-protect-metachars file-A) | |
| 613 | (emerge-protect-metachars file-B)) | |
| 3b4a6e27 | 614 | t)) |
| 661d3230 | 615 | (emerge-prepare-error-list emerge-diff-ok-lines-regexp) |
| 3b4a6e27 JB |
616 | (emerge-convert-diffs-to-markers |
| 617 | emerge-A-buffer emerge-B-buffer emerge-merge-buffer | |
| 618 | (emerge-extract-diffs emerge-diff-buffer))) | |
| 619 | ||
| 620 | (defun emerge-extract-diffs (diff-buffer) | |
| 621 | (let (list) | |
| 622 | (emerge-eval-in-buffer | |
| 623 | diff-buffer | |
| 624 | (goto-char (point-min)) | |
| 625 | (while (re-search-forward emerge-match-diff-line nil t) | |
| 626 | (let* ((a-begin (string-to-int (buffer-substring (match-beginning 1) | |
| 627 | (match-end 1)))) | |
| 628 | (a-end (let ((b (match-beginning 3)) | |
| 629 | (e (match-end 3))) | |
| 630 | (if b | |
| 631 | (string-to-int (buffer-substring b e)) | |
| 632 | a-begin))) | |
| 633 | (diff-type (buffer-substring (match-beginning 4) (match-end 4))) | |
| 634 | (b-begin (string-to-int (buffer-substring (match-beginning 5) | |
| 635 | (match-end 5)))) | |
| 636 | (b-end (let ((b (match-beginning 7)) | |
| 637 | (e (match-end 7))) | |
| 638 | (if b | |
| 639 | (string-to-int (buffer-substring b e)) | |
| 640 | b-begin)))) | |
| 641 | ;; fix the beginning and end numbers, because diff is somewhat | |
| 642 | ;; strange about how it numbers lines | |
| 643 | (if (string-equal diff-type "a") | |
| 644 | (progn | |
| 645 | (setq b-end (1+ b-end)) | |
| 646 | (setq a-begin (1+ a-begin)) | |
| 647 | (setq a-end a-begin)) | |
| 648 | (if (string-equal diff-type "d") | |
| 649 | (progn | |
| 650 | (setq a-end (1+ a-end)) | |
| 651 | (setq b-begin (1+ b-begin)) | |
| 652 | (setq b-end b-begin)) | |
| 653 | ;; (string-equal diff-type "c") | |
| 654 | (progn | |
| 655 | (setq a-end (1+ a-end)) | |
| 656 | (setq b-end (1+ b-end))))) | |
| 657 | (setq list (cons (vector a-begin a-end | |
| 658 | b-begin b-end | |
| 659 | 'default-A) | |
| 660 | list))))) | |
| 661 | (nreverse list))) | |
| 662 | ||
| 663 | ;; Set up buffer of diff/diff3 error messages. | |
| 664 | (defun emerge-prepare-error-list (ok-regexp) | |
| 665 | (setq emerge-diff-error-buffer (get-buffer-create "*emerge-diff-errors*")) | |
| 666 | (emerge-eval-in-buffer | |
| 667 | emerge-diff-error-buffer | |
| 668 | (erase-buffer) | |
| 669 | (insert-buffer emerge-diff-buffer) | |
| 670 | (delete-matching-lines ok-regexp))) | |
| 671 | ||
| 672 | ;;; Top-level and setup functions for three-file mode. | |
| 673 | ||
| 674 | (defun emerge-files-with-ancestor-internal (file-A file-B file-ancestor | |
| 737e3892 RS |
675 | &optional startup-hooks quit-hooks |
| 676 | output-file) | |
| 151e4b9c | 677 | (if (not (file-readable-p file-A)) |
| 737e3892 | 678 | (error "File `%s' does not exist or is not readable" file-A)) |
| 151e4b9c | 679 | (if (not (file-readable-p file-B)) |
| 737e3892 | 680 | (error "File `%s' does not exist or is not readable" file-B)) |
| 151e4b9c | 681 | (if (not (file-readable-p file-ancestor)) |
| 737e3892 | 682 | (error "File `%s' does not exist or is not readable" file-ancestor)) |
| 3b4a6e27 JB |
683 | (let ((buffer-A (find-file-noselect file-A)) |
| 684 | (buffer-B (find-file-noselect file-B)) | |
| 685 | (buffer-ancestor (find-file-noselect file-ancestor))) | |
| 151e4b9c RS |
686 | ;; Record the directories of the files |
| 687 | (setq emerge-last-dir-A (file-name-directory file-A)) | |
| 688 | (setq emerge-last-dir-B (file-name-directory file-B)) | |
| 689 | (setq emerge-last-dir-ancestor (file-name-directory file-ancestor)) | |
| 690 | (if output-file | |
| 691 | (setq emerge-last-dir-output (file-name-directory output-file))) | |
| 3b4a6e27 | 692 | ;; Make sure the entire files are seen, and they reflect what is on disk |
| 151e4b9c RS |
693 | (emerge-eval-in-buffer |
| 694 | buffer-A | |
| 695 | (widen) | |
| 737e3892 RS |
696 | (let ((temp (file-local-copy file-A))) |
| 697 | (if temp | |
| 698 | (setq file-A temp | |
| 699 | startup-hooks | |
| 151e4b9c | 700 | (cons (` (lambda () (delete-file (, file-A)))) |
| 737e3892 RS |
701 | startup-hooks)) |
| 702 | ;; Verify that the file matches the buffer | |
| 703 | (emerge-verify-file-buffer)))) | |
| 151e4b9c RS |
704 | (emerge-eval-in-buffer |
| 705 | buffer-B | |
| 706 | (widen) | |
| 737e3892 RS |
707 | (let ((temp (file-local-copy file-B))) |
| 708 | (if temp | |
| 709 | (setq file-B temp | |
| 710 | startup-hooks | |
| 151e4b9c | 711 | (cons (` (lambda () (delete-file (, file-B)))) |
| 737e3892 RS |
712 | startup-hooks)) |
| 713 | ;; Verify that the file matches the buffer | |
| 714 | (emerge-verify-file-buffer)))) | |
| 151e4b9c RS |
715 | (emerge-eval-in-buffer |
| 716 | buffer-ancestor | |
| 717 | (widen) | |
| 737e3892 RS |
718 | (let ((temp (file-local-copy file-ancestor))) |
| 719 | (if temp | |
| 720 | (setq file-ancestor temp | |
| 721 | startup-hooks | |
| 151e4b9c | 722 | (cons (` (lambda () (delete-file (, file-ancestor)))) |
| 737e3892 RS |
723 | startup-hooks)) |
| 724 | ;; Verify that the file matches the buffer | |
| 725 | (emerge-verify-file-buffer)))) | |
| 3b4a6e27 JB |
726 | (emerge-setup-with-ancestor buffer-A file-A buffer-B file-B |
| 727 | buffer-ancestor file-ancestor | |
| 728 | startup-hooks quit-hooks output-file))) | |
| 729 | ||
| 730 | ;; Start up Emerge on two files with an ancestor | |
| 731 | (defun emerge-setup-with-ancestor (buffer-A file-A buffer-B file-B | |
| 732 | buffer-ancestor file-ancestor | |
| 733 | &optional startup-hooks quit-hooks | |
| 734 | output-file) | |
| 735 | (setq file-A (expand-file-name file-A)) | |
| 736 | (setq file-B (expand-file-name file-B)) | |
| 737 | (setq file-ancestor (expand-file-name file-ancestor)) | |
| 738 | (setq output-file (and output-file (expand-file-name output-file))) | |
| 739 | (let* ((merge-buffer-name (emerge-unique-buffer-name "*merge" "*")) | |
| 740 | ;; create the merge buffer from buffer A, so it inherits buffer A's | |
| 741 | ;; default directory, etc. | |
| 742 | (merge-buffer (emerge-eval-in-buffer | |
| 743 | buffer-A | |
| 744 | (get-buffer-create merge-buffer-name)))) | |
| 745 | (emerge-eval-in-buffer | |
| 746 | merge-buffer | |
| 747 | (emerge-copy-modes buffer-A) | |
| 748 | (setq buffer-read-only nil) | |
| 749 | (auto-save-mode 1) | |
| 750 | (setq emerge-mode t) | |
| 751 | (setq emerge-A-buffer buffer-A) | |
| 752 | (setq emerge-B-buffer buffer-B) | |
| 753 | (setq emerge-ancestor-buffer buffer-ancestor) | |
| 754 | (setq emerge-merge-buffer merge-buffer) | |
| 755 | (setq emerge-output-description | |
| 756 | (if output-file | |
| 757 | (concat "Output to file: " output-file) | |
| 758 | (concat "Output to buffer: " (buffer-name merge-buffer)))) | |
| 759 | (insert-buffer emerge-A-buffer) | |
| 760 | (emerge-set-keys) | |
| 761 | (setq emerge-difference-list | |
| 762 | (emerge-make-diff3-list file-A file-B file-ancestor)) | |
| 763 | (setq emerge-number-of-differences (length emerge-difference-list)) | |
| 764 | (setq emerge-current-difference -1) | |
| 737e3892 | 765 | (setq emerge-quit-hook quit-hooks) |
| 3b4a6e27 | 766 | (emerge-remember-buffer-characteristics) |
| 151e4b9c RS |
767 | (emerge-select-prefer-Bs) |
| 768 | (emerge-handle-local-variables)) | |
| 3b4a6e27 JB |
769 | (emerge-setup-windows buffer-A buffer-B merge-buffer t) |
| 770 | (emerge-eval-in-buffer merge-buffer | |
| 737e3892 | 771 | (run-hooks 'startup-hooks 'emerge-startup-hook) |
| 3b4a6e27 JB |
772 | (setq buffer-read-only t)))) |
| 773 | ||
| 774 | ;; Generate the Emerge difference list between two files with an ancestor | |
| 775 | (defun emerge-make-diff3-list (file-A file-B file-ancestor) | |
| 776 | (setq emerge-diff-buffer (get-buffer-create "*emerge-diff*")) | |
| 777 | (emerge-eval-in-buffer | |
| 778 | emerge-diff-buffer | |
| 779 | (erase-buffer) | |
| 780 | (shell-command | |
| 781 | (format "%s %s %s %s %s" | |
| 782 | emerge-diff3-program emerge-diff-options | |
| 151e4b9c | 783 | (emerge-protect-metachars file-A) |
| 4a6e3980 | 784 | (emerge-protect-metachars file-ancestor) |
| 151e4b9c | 785 | (emerge-protect-metachars file-B)) |
| 3b4a6e27 | 786 | t)) |
| 661d3230 | 787 | (emerge-prepare-error-list emerge-diff3-ok-lines-regexp) |
| 3b4a6e27 JB |
788 | (emerge-convert-diffs-to-markers |
| 789 | emerge-A-buffer emerge-B-buffer emerge-merge-buffer | |
| 790 | (emerge-extract-diffs3 emerge-diff-buffer))) | |
| 791 | ||
| 792 | (defun emerge-extract-diffs3 (diff-buffer) | |
| 793 | (let (list) | |
| 794 | (emerge-eval-in-buffer | |
| 795 | diff-buffer | |
| 796 | (while (re-search-forward "^====\\(.?\\)$" nil t) | |
| 797 | ;; leave point after matched line | |
| 798 | (beginning-of-line 2) | |
| 799 | (let ((agreement (buffer-substring (match-beginning 1) (match-end 1)))) | |
| 800 | ;; if the A and B files are the same, ignore the difference | |
| 4a6e3980 | 801 | (if (not (string-equal agreement "2")) |
| 3b4a6e27 JB |
802 | (setq list |
| 803 | (cons | |
| 4a6e3980 | 804 | (let (group-1 group-3 pos) |
| 737e3892 | 805 | (setq pos (point)) |
| 4a6e3980 | 806 | (setq group-1 (emerge-get-diff3-group "1")) |
| 737e3892 RS |
807 | (goto-char pos) |
| 808 | (setq group-3 (emerge-get-diff3-group "3")) | |
| 4a6e3980 | 809 | (vector (car group-1) (car (cdr group-1)) |
| 3b4a6e27 | 810 | (car group-3) (car (cdr group-3)) |
| 4a6e3980 | 811 | (cond ((string-equal agreement "1") 'prefer-A) |
| 3b4a6e27 JB |
812 | ((string-equal agreement "3") 'prefer-B) |
| 813 | (t 'default-A)))) | |
| 814 | list)))))) | |
| 815 | (nreverse list))) | |
| 816 | ||
| 817 | (defun emerge-get-diff3-group (file) | |
| 818 | ;; This save-excursion allows emerge-get-diff3-group to be called for the | |
| 819 | ;; various groups of lines (1, 2, 3) in any order, and for the lines to | |
| 820 | ;; appear in any order. The reason this is necessary is that Gnu diff3 | |
| 821 | ;; can produce the groups in the order 1, 2, 3 or 1, 3, 2. | |
| 822 | (save-excursion | |
| 823 | (re-search-forward | |
| 824 | (concat "^" file ":\\([0-9]+\\)\\(,\\([0-9]+\\)\\)?\\([ac]\\)$")) | |
| 825 | (beginning-of-line 2) | |
| 826 | ;; treatment depends on whether it is an "a" group or a "c" group | |
| 827 | (if (string-equal (buffer-substring (match-beginning 4) (match-end 4)) "c") | |
| 828 | ;; it is a "c" group | |
| 829 | (if (match-beginning 2) | |
| 830 | ;; it has two numbers | |
| 831 | (list (string-to-int | |
| 832 | (buffer-substring (match-beginning 1) (match-end 1))) | |
| 833 | (1+ (string-to-int | |
| 834 | (buffer-substring (match-beginning 3) (match-end 3))))) | |
| 835 | ;; it has one number | |
| 836 | (let ((x (string-to-int | |
| 837 | (buffer-substring (match-beginning 1) (match-end 1))))) | |
| 838 | (list x (1+ x)))) | |
| 839 | ;; it is an "a" group | |
| 840 | (let ((x (1+ (string-to-int | |
| 841 | (buffer-substring (match-beginning 1) (match-end 1)))))) | |
| 842 | (list x x))))) | |
| 843 | ||
| 844 | ;;; Functions to start Emerge on files | |
| 845 | ||
| 737e3892 | 846 | ;;;###autoload |
| 3b4a6e27 JB |
847 | (defun emerge-files (arg file-A file-B file-out &optional startup-hooks |
| 848 | quit-hooks) | |
| 849 | "Run Emerge on two files." | |
| 850 | (interactive | |
| 851 | (let (f) | |
| 852 | (list current-prefix-arg | |
| 151e4b9c RS |
853 | (setq f (emerge-read-file-name "File A to merge" emerge-last-dir-A |
| 854 | nil nil)) | |
| 855 | (emerge-read-file-name "File B to merge" emerge-last-dir-B nil f) | |
| 3b4a6e27 | 856 | (and current-prefix-arg |
| 151e4b9c RS |
857 | (emerge-read-file-name "Output file" emerge-last-dir-output |
| 858 | f f))))) | |
| 3b4a6e27 JB |
859 | (emerge-files-internal |
| 860 | file-A file-B startup-hooks | |
| 737e3892 | 861 | (if file-out |
| 3b4a6e27 JB |
862 | (cons (` (lambda () (emerge-files-exit (, file-out)))) |
| 863 | quit-hooks) | |
| 864 | quit-hooks) | |
| 865 | file-out)) | |
| 866 | ||
| 737e3892 | 867 | ;;;###autoload |
| 3b4a6e27 JB |
868 | (defun emerge-files-with-ancestor (arg file-A file-B file-ancestor file-out |
| 869 | &optional startup-hooks quit-hooks) | |
| 870 | "Run Emerge on two files, giving another file as the ancestor." | |
| 871 | (interactive | |
| 872 | (let (f) | |
| 873 | (list current-prefix-arg | |
| 151e4b9c RS |
874 | (setq f (emerge-read-file-name "File A to merge" emerge-last-dir-A |
| 875 | nil nil)) | |
| 876 | (emerge-read-file-name "File B to merge" emerge-last-dir-B nil f) | |
| 877 | (emerge-read-file-name "Ancestor file" emerge-last-dir-ancestor | |
| 878 | nil f) | |
| 3b4a6e27 | 879 | (and current-prefix-arg |
| 151e4b9c RS |
880 | (emerge-read-file-name "Output file" emerge-last-dir-output |
| 881 | f f))))) | |
| 3b4a6e27 JB |
882 | (emerge-files-with-ancestor-internal |
| 883 | file-A file-B file-ancestor startup-hooks | |
| 737e3892 | 884 | (if file-out |
| 3b4a6e27 JB |
885 | (cons (` (lambda () (emerge-files-exit (, file-out)))) |
| 886 | quit-hooks) | |
| 887 | quit-hooks) | |
| 888 | file-out)) | |
| 889 | ||
| 890 | ;; Write the merge buffer out in place of the file the A buffer is visiting. | |
| 891 | (defun emerge-files-exit (file-out) | |
| 892 | ;; if merge was successful was given, save to disk | |
| 893 | (if (not emerge-prefix-argument) | |
| 894 | (emerge-write-and-delete file-out))) | |
| 895 | ||
| 896 | ;;; Functions to start Emerge on buffers | |
| 897 | ||
| 737e3892 | 898 | ;;;###autoload |
| 3b4a6e27 JB |
899 | (defun emerge-buffers (buffer-A buffer-B &optional startup-hooks quit-hooks) |
| 900 | "Run Emerge on two buffers." | |
| 901 | (interactive "bBuffer A to merge: \nbBuffer B to merge: ") | |
| 902 | (let ((emerge-file-A (emerge-make-temp-file "A")) | |
| 903 | (emerge-file-B (emerge-make-temp-file "B"))) | |
| 904 | (emerge-eval-in-buffer | |
| 905 | buffer-A | |
| 906 | (write-region (point-min) (point-max) emerge-file-A nil 'no-message)) | |
| 907 | (emerge-eval-in-buffer | |
| 908 | buffer-B | |
| 909 | (write-region (point-min) (point-max) emerge-file-B nil 'no-message)) | |
| 910 | (emerge-setup (get-buffer buffer-A) emerge-file-A | |
| 911 | (get-buffer buffer-B) emerge-file-B | |
| 151e4b9c RS |
912 | (cons (` (lambda () |
| 913 | (delete-file (, emerge-file-A)) | |
| 914 | (delete-file (, emerge-file-B)))) | |
| 3b4a6e27 JB |
915 | startup-hooks) |
| 916 | quit-hooks | |
| 917 | nil))) | |
| 918 | ||
| 737e3892 | 919 | ;;;###autoload |
| 3b4a6e27 JB |
920 | (defun emerge-buffers-with-ancestor (buffer-A buffer-B buffer-ancestor |
| 921 | &optional startup-hooks | |
| 922 | quit-hooks) | |
| 923 | "Run Emerge on two buffers, giving another buffer as the ancestor." | |
| 924 | (interactive | |
| 925 | "bBuffer A to merge: \nbBuffer B to merge: \nbAncestor buffer: ") | |
| 926 | (let ((emerge-file-A (emerge-make-temp-file "A")) | |
| 927 | (emerge-file-B (emerge-make-temp-file "B")) | |
| 928 | (emerge-file-ancestor (emerge-make-temp-file "anc"))) | |
| 929 | (emerge-eval-in-buffer | |
| 930 | buffer-A | |
| 931 | (write-region (point-min) (point-max) emerge-file-A nil 'no-message)) | |
| 932 | (emerge-eval-in-buffer | |
| 933 | buffer-B | |
| 934 | (write-region (point-min) (point-max) emerge-file-B nil 'no-message)) | |
| 935 | (emerge-eval-in-buffer | |
| 936 | buffer-ancestor | |
| 937 | (write-region (point-min) (point-max) emerge-file-ancestor nil | |
| 938 | 'no-message)) | |
| 939 | (emerge-setup-with-ancestor (get-buffer buffer-A) emerge-file-A | |
| 940 | (get-buffer buffer-B) emerge-file-B | |
| 941 | (get-buffer buffer-ancestor) | |
| 942 | emerge-file-ancestor | |
| 151e4b9c RS |
943 | (cons (` (lambda () |
| 944 | (delete-file (, emerge-file-A)) | |
| 945 | (delete-file (, emerge-file-B)) | |
| 946 | (delete-file | |
| 947 | (, emerge-file-ancestor)))) | |
| 3b4a6e27 JB |
948 | startup-hooks) |
| 949 | quit-hooks | |
| 950 | nil))) | |
| 951 | ||
| 952 | ;;; Functions to start Emerge from the command line | |
| 953 | ||
| 737e3892 | 954 | ;;;###autoload |
| 3b4a6e27 JB |
955 | (defun emerge-files-command () |
| 956 | (let ((file-a (nth 0 command-line-args-left)) | |
| 957 | (file-b (nth 1 command-line-args-left)) | |
| 958 | (file-out (nth 2 command-line-args-left))) | |
| 959 | (setq command-line-args-left (nthcdr 3 command-line-args-left)) | |
| 960 | (emerge-files-internal | |
| 961 | file-a file-b nil | |
| 962 | (list (` (lambda () (emerge-command-exit (, file-out)))))))) | |
| 963 | ||
| 737e3892 | 964 | ;;;###autoload |
| 3b4a6e27 JB |
965 | (defun emerge-files-with-ancestor-command () |
| 966 | (let (file-a file-b file-anc file-out) | |
| 967 | ;; check for a -a flag, for filemerge compatibility | |
| 968 | (if (string= (car command-line-args-left) "-a") | |
| 969 | ;; arguments are "-a ancestor file-a file-b file-out" | |
| 970 | (progn | |
| 971 | (setq file-a (nth 2 command-line-args-left)) | |
| 972 | (setq file-b (nth 3 command-line-args-left)) | |
| 973 | (setq file-anc (nth 1 command-line-args-left)) | |
| 974 | (setq file-out (nth 4 command-line-args-left)) | |
| 975 | (setq command-line-args-left (nthcdr 5 command-line-args-left))) | |
| 976 | ;; arguments are "file-a file-b ancestor file-out" | |
| 977 | (setq file-a (nth 0 command-line-args-left)) | |
| 978 | (setq file-b (nth 1 command-line-args-left)) | |
| 979 | (setq file-anc (nth 2 command-line-args-left)) | |
| 980 | (setq file-out (nth 3 command-line-args-left)) | |
| 981 | (setq command-line-args-left (nthcdr 4 command-line-args-left))) | |
| 982 | (emerge-files-with-ancestor-internal | |
| 983 | file-a file-b file-anc nil | |
| 984 | (list (` (lambda () (emerge-command-exit (, file-out)))))))) | |
| 985 | ||
| 986 | (defun emerge-command-exit (file-out) | |
| 987 | (emerge-write-and-delete file-out) | |
| 988 | (kill-emacs (if emerge-prefix-argument 1 0))) | |
| 989 | ||
| 990 | ;;; Functions to start Emerge via remote request | |
| 991 | ||
| 737e3892 | 992 | ;;;###autoload |
| 3b4a6e27 JB |
993 | (defun emerge-files-remote (file-a file-b file-out) |
| 994 | (setq emerge-file-out file-out) | |
| 995 | (emerge-files-internal | |
| 996 | file-a file-b nil | |
| ff5f6ddd | 997 | (list (` (lambda () (emerge-remote-exit (, file-out) '(, emerge-exit-func))))) |
| 3b4a6e27 JB |
998 | file-out) |
| 999 | (throw 'client-wait nil)) | |
| 1000 | ||
| 737e3892 | 1001 | ;;;###autoload |
| 3b4a6e27 JB |
1002 | (defun emerge-files-with-ancestor-remote (file-a file-b file-anc file-out) |
| 1003 | (setq emerge-file-out file-out) | |
| 1004 | (emerge-files-with-ancestor-internal | |
| 1005 | file-a file-b file-anc nil | |
| ff5f6ddd | 1006 | (list (` (lambda () (emerge-remote-exit (, file-out) '(, emerge-exit-func))))) |
| 3b4a6e27 JB |
1007 | file-out) |
| 1008 | (throw 'client-wait nil)) | |
| 1009 | ||
| ff5f6ddd | 1010 | (defun emerge-remote-exit (file-out emerge-exit-func) |
| 3b4a6e27 JB |
1011 | (emerge-write-and-delete file-out) |
| 1012 | (kill-buffer emerge-merge-buffer) | |
| ff5f6ddd | 1013 | (funcall emerge-exit-func (if emerge-prefix-argument 1 0))) |
| 3b4a6e27 | 1014 | |
| 151e4b9c RS |
1015 | ;;; Functions to start Emerge on RCS versions |
| 1016 | ||
| 9343c8ee | 1017 | ;;;###autoload |
| 151e4b9c RS |
1018 | (defun emerge-revisions (arg file revision-A revision-B |
| 1019 | &optional startup-hooks quit-hooks) | |
| 1020 | "Emerge two RCS revisions of a file." | |
| 1021 | (interactive | |
| 1022 | (list current-prefix-arg | |
| 1023 | (read-file-name "File to merge: " nil nil 'confirm) | |
| 1024 | (read-string "Revision A to merge: " emerge-last-revision-A) | |
| 1025 | (read-string "Revision B to merge: " emerge-last-revision-B))) | |
| 1026 | (setq emerge-last-revision-A revision-A | |
| 1027 | emerge-last-revision-B revision-B) | |
| 1028 | (emerge-revisions-internal | |
| 1029 | file revision-A revision-B startup-hooks | |
| 1030 | (if arg | |
| 1031 | (cons (` (lambda () | |
| 1032 | (shell-command | |
| 1033 | (, (format "%s %s" emerge-rcs-ci-program file))))) | |
| 1034 | quit-hooks) | |
| 1035 | quit-hooks))) | |
| 1036 | ||
| 9343c8ee | 1037 | ;;;###autoload |
| 151e4b9c RS |
1038 | (defun emerge-revisions-with-ancestor (arg file revision-A |
| 1039 | revision-B ancestor | |
| 1040 | &optional | |
| 1041 | startup-hooks quit-hooks) | |
| 737e3892 | 1042 | "Emerge two RCS revisions of a file, with another revision as ancestor." |
| 151e4b9c RS |
1043 | (interactive |
| 1044 | (list current-prefix-arg | |
| 1045 | (read-file-name "File to merge: " nil nil 'confirm) | |
| 1046 | (read-string "Revision A to merge: " emerge-last-revision-A) | |
| 1047 | (read-string "Revision B to merge: " emerge-last-revision-B) | |
| 1048 | (read-string "Ancestor: " emerge-last-revision-ancestor))) | |
| 1049 | (setq emerge-last-revision-A revision-A | |
| 1050 | emerge-last-revision-B revision-B | |
| 1051 | emerge-last-revision-ancestor ancestor) | |
| 1052 | (emerge-revision-with-ancestor-internal | |
| 1053 | file revision-A revision-B ancestor startup-hooks | |
| 1054 | (if arg | |
| 1055 | (let ((cmd )) | |
| 1056 | (cons (` (lambda () | |
| 1057 | (shell-command | |
| 1058 | (, (format "%s %s" emerge-rcs-ci-program file))))) | |
| 1059 | quit-hooks)) | |
| 1060 | quit-hooks))) | |
| 1061 | ||
| 1062 | (defun emerge-revisions-internal (file revision-A revision-B &optional | |
| 1063 | startup-hooks quit-hooks output-file) | |
| 1064 | (let ((buffer-A (get-buffer-create (format "%s,%s" file revision-A))) | |
| 1065 | (buffer-B (get-buffer-create (format "%s,%s" file revision-B))) | |
| 1066 | (emerge-file-A (emerge-make-temp-file "A")) | |
| 1067 | (emerge-file-B (emerge-make-temp-file "B"))) | |
| 1068 | ;; Get the revisions into buffers | |
| 1069 | (emerge-eval-in-buffer | |
| 1070 | buffer-A | |
| 1071 | (erase-buffer) | |
| 1072 | (shell-command | |
| 1073 | (format "%s -q -p%s %s" emerge-rcs-co-program revision-A file) | |
| 1074 | t) | |
| 1075 | (write-region (point-min) (point-max) emerge-file-A nil 'no-message) | |
| 1076 | (set-buffer-modified-p nil)) | |
| 1077 | (emerge-eval-in-buffer | |
| 1078 | buffer-B | |
| 1079 | (erase-buffer) | |
| 1080 | (shell-command | |
| 1081 | (format "%s -q -p%s %s" emerge-rcs-co-program revision-B file) | |
| 1082 | t) | |
| 1083 | (write-region (point-min) (point-max) emerge-file-B nil 'no-message) | |
| 1084 | (set-buffer-modified-p nil)) | |
| 1085 | ;; Do the merge | |
| 1086 | (emerge-setup buffer-A emerge-file-A | |
| 1087 | buffer-B emerge-file-B | |
| 1088 | (cons (` (lambda () | |
| 1089 | (delete-file (, emerge-file-A)) | |
| 1090 | (delete-file (, emerge-file-B)))) | |
| 1091 | startup-hooks) | |
| 1092 | (cons (` (lambda () (emerge-files-exit (, file)))) | |
| 1093 | quit-hooks) | |
| 1094 | nil))) | |
| 1095 | ||
| 1096 | (defun emerge-revision-with-ancestor-internal (file revision-A revision-B | |
| 1097 | ancestor | |
| 1098 | &optional startup-hooks | |
| 1099 | quit-hooks output-file) | |
| 1100 | (let ((buffer-A (get-buffer-create (format "%s,%s" file revision-A))) | |
| 1101 | (buffer-B (get-buffer-create (format "%s,%s" file revision-B))) | |
| 1102 | (buffer-ancestor (get-buffer-create (format "%s,%s" file ancestor))) | |
| 1103 | (emerge-file-A (emerge-make-temp-file "A")) | |
| 1104 | (emerge-file-B (emerge-make-temp-file "B")) | |
| 1105 | (emerge-ancestor (emerge-make-temp-file "ancestor"))) | |
| 1106 | ;; Get the revisions into buffers | |
| 1107 | (emerge-eval-in-buffer | |
| 1108 | buffer-A | |
| 1109 | (erase-buffer) | |
| 1110 | (shell-command | |
| 1111 | (format "%s -q -p%s %s" emerge-rcs-co-program | |
| 1112 | revision-A file) | |
| 1113 | t) | |
| 1114 | (write-region (point-min) (point-max) emerge-file-A nil 'no-message) | |
| 1115 | (set-buffer-modified-p nil)) | |
| 1116 | (emerge-eval-in-buffer | |
| 1117 | buffer-B | |
| 1118 | (erase-buffer) | |
| 1119 | (shell-command | |
| 1120 | (format "%s -q -p%s %s" emerge-rcs-co-program revision-B file) | |
| 1121 | t) | |
| 1122 | (write-region (point-min) (point-max) emerge-file-B nil 'no-message) | |
| 1123 | (set-buffer-modified-p nil)) | |
| 1124 | (emerge-eval-in-buffer | |
| 1125 | buffer-ancestor | |
| 1126 | (erase-buffer) | |
| 1127 | (shell-command | |
| 1128 | (format "%s -q -p%s %s" emerge-rcs-co-program ancestor file) | |
| 1129 | t) | |
| 1130 | (write-region (point-min) (point-max) emerge-ancestor nil 'no-message) | |
| 1131 | (set-buffer-modified-p nil)) | |
| 1132 | ;; Do the merge | |
| 1133 | (emerge-setup-with-ancestor | |
| 1134 | buffer-A emerge-file-A buffer-B emerge-file-B | |
| 1135 | buffer-ancestor emerge-ancestor | |
| 1136 | (cons (` (lambda () | |
| 1137 | (delete-file (, emerge-file-A)) | |
| 1138 | (delete-file (, emerge-file-B)) | |
| 1139 | (delete-file (, emerge-ancestor)))) | |
| 1140 | startup-hooks) | |
| 1141 | (cons (` (lambda () (emerge-files-exit (, file)))) | |
| 1142 | quit-hooks) | |
| 1143 | output-file))) | |
| 1144 | ||
| 1145 | ;;; Function to start Emerge based on a line in a file | |
| 1146 | ||
| 1147 | (defun emerge-execute-line () | |
| 737e3892 RS |
1148 | "Run Emerge using files named in current text line. |
| 1149 | Looks in that line for whitespace-separated entries of these forms: | |
| 151e4b9c RS |
1150 | a=file1 |
| 1151 | b=file2 | |
| 1152 | ancestor=file3 | |
| 1153 | output=file4 | |
| 737e3892 | 1154 | to specify the files to use in Emerge. |
| 151e4b9c | 1155 | |
| 737e3892 | 1156 | In addition, if only one of `a=file' or `b=file' is present, and `output=file' |
| 151e4b9c | 1157 | is present: |
| 737e3892 | 1158 | If `emerge-execute-line-deletions' is non-nil and `ancestor=file' is present, |
| 151e4b9c RS |
1159 | it is assumed that the file in question has been deleted, and it is |
| 1160 | not copied to the output file. | |
| 1161 | Otherwise, the A or B file present is copied to the output file." | |
| 1162 | (interactive) | |
| 1163 | (let (file-A file-B file-ancestor file-out | |
| 1164 | (case-fold-search t)) | |
| 1165 | ;; Stop if at end of buffer (even though we might be in a line, if | |
| 1166 | ;; the line does not end with newline) | |
| 1167 | (if (eobp) | |
| 1168 | (error "At end of buffer")) | |
| 1169 | ;; Go to the beginning of the line | |
| 1170 | (beginning-of-line) | |
| 1171 | ;; Skip any initial whitespace | |
| 1172 | (if (looking-at "[ \t]*") | |
| 1173 | (goto-char (match-end 0))) | |
| 1174 | ;; Process the entire line | |
| 1175 | (while (not (eolp)) | |
| 1176 | ;; Get the next entry | |
| 1177 | (if (looking-at "\\([a-z]+\\)=\\([^ \t\n]+\\)[ \t]*") | |
| 1178 | ;; Break apart the tab (before =) and the filename (after =) | |
| 1179 | (let ((tag (downcase | |
| 1180 | (buffer-substring (match-beginning 1) (match-end 1)))) | |
| 1181 | (file (buffer-substring (match-beginning 2) (match-end 2)))) | |
| 1182 | ;; Move point after the entry | |
| 1183 | (goto-char (match-end 0)) | |
| 1184 | ;; Store the filename in the right variable | |
| 1185 | (cond | |
| 1186 | ((string-equal tag "a") | |
| 1187 | (if file-A | |
| 737e3892 | 1188 | (error "This line has two `A' entries")) |
| 151e4b9c RS |
1189 | (setq file-A file)) |
| 1190 | ((string-equal tag "b") | |
| 1191 | (if file-B | |
| 737e3892 | 1192 | (error "This line has two `B' entries")) |
| 151e4b9c RS |
1193 | (setq file-B file)) |
| 1194 | ((or (string-equal tag "anc") (string-equal tag "ancestor")) | |
| 1195 | (if file-ancestor | |
| 737e3892 | 1196 | (error "This line has two `ancestor' entries")) |
| 151e4b9c RS |
1197 | (setq file-ancestor file)) |
| 1198 | ((or (string-equal tag "out") (string-equal tag "output")) | |
| 1199 | (if file-out | |
| 737e3892 | 1200 | (error "This line has two `output' entries")) |
| 151e4b9c RS |
1201 | (setq file-out file)) |
| 1202 | (t | |
| 1203 | (error "Unrecognized entry")))) | |
| 1204 | ;; If the match on the entry pattern failed | |
| eb8c3be9 | 1205 | (error "Unparsable entry"))) |
| 151e4b9c RS |
1206 | ;; Make sure that file-A and file-B are present |
| 1207 | (if (not (or (and file-A file-B) file-out)) | |
| 737e3892 | 1208 | (error "Must have both `A' and `B' entries")) |
| 151e4b9c | 1209 | (if (not (or file-A file-B)) |
| 737e3892 | 1210 | (error "Must have `A' or `B' entry")) |
| 151e4b9c RS |
1211 | ;; Go to the beginning of the next line, so next execution will use |
| 1212 | ;; next line in buffer. | |
| 1213 | (beginning-of-line 2) | |
| 1214 | ;; Execute the correct command | |
| 1215 | (cond | |
| 1216 | ;; Merge of two files with ancestor | |
| 1217 | ((and file-A file-B file-ancestor) | |
| 1218 | (message "Merging %s and %s..." file-A file-B) | |
| 1219 | (emerge-files-with-ancestor (not (not file-out)) file-A file-B | |
| 1220 | file-ancestor file-out | |
| 1221 | nil | |
| 1222 | ;; When done, return to this buffer. | |
| 1223 | (list | |
| 1224 | (` (lambda () | |
| 1225 | (switch-to-buffer (, (current-buffer))) | |
| 1226 | (message "Merge done.")))))) | |
| 1227 | ;; Merge of two files without ancestor | |
| 1228 | ((and file-A file-B) | |
| 1229 | (message "Merging %s and %s..." file-A file-B) | |
| 1230 | (emerge-files (not (not file-out)) file-A file-B file-out | |
| 1231 | nil | |
| 1232 | ;; When done, return to this buffer. | |
| 1233 | (list | |
| 1234 | (` (lambda () | |
| 1235 | (switch-to-buffer (, (current-buffer))) | |
| 1236 | (message "Merge done.")))))) | |
| 1237 | ;; There is an output file (or there would have been an error above), | |
| 1238 | ;; but only one input file. | |
| 1239 | ;; The file appears to have been deleted in one version; do nothing. | |
| 1240 | ((and file-ancestor emerge-execute-line-deletions) | |
| 1241 | (message "No action.")) | |
| 1242 | ;; The file should be copied from the version that contains it | |
| 1243 | (t (let ((input-file (or file-A file-B))) | |
| 1244 | (message "Copying...") | |
| 1245 | (copy-file input-file file-out) | |
| 1246 | (message "%s copied to %s." input-file file-out)))))) | |
| 1247 | ||
| 1248 | ;;; Sample function for creating information for emerge-execute-line | |
| 1249 | ||
| 1250 | (defvar emerge-merge-directories-filename-regexp "[^.]" | |
| 737e3892 | 1251 | "Regexp describing files to be processed by `emerge-merge-directories'.") |
| 151e4b9c | 1252 | |
| 9343c8ee | 1253 | ;;;###autoload |
| 151e4b9c RS |
1254 | (defun emerge-merge-directories (a-dir b-dir ancestor-dir output-dir) |
| 1255 | (interactive | |
| 1256 | (list | |
| 1257 | (read-file-name "A directory: " nil nil 'confirm) | |
| 1258 | (read-file-name "B directory: " nil nil 'confirm) | |
| 1259 | (read-file-name "Ancestor directory (null for none): " nil nil 'confirm) | |
| 1260 | (read-file-name "Output directory (null for none): " nil nil 'confirm))) | |
| 1261 | ;; Check that we're not on a line | |
| 1262 | (if (not (and (bolp) (eolp))) | |
| 1263 | (error "There is text on this line")) | |
| 1264 | ;; Turn null strings into nil to indicate directories not used. | |
| 1265 | (if (and ancestor-dir (string-equal ancestor-dir "")) | |
| 1266 | (setq ancestor-dir nil)) | |
| 1267 | (if (and output-dir (string-equal output-dir "")) | |
| 1268 | (setq output-dir nil)) | |
| 1269 | ;; Canonicalize the directory names | |
| 1270 | (setq a-dir (expand-file-name a-dir)) | |
| 1271 | (if (not (string-equal (substring a-dir -1) "/")) | |
| 1272 | (setq a-dir (concat a-dir "/"))) | |
| 1273 | (setq b-dir (expand-file-name b-dir)) | |
| 1274 | (if (not (string-equal (substring b-dir -1) "/")) | |
| 1275 | (setq b-dir (concat b-dir "/"))) | |
| 1276 | (if ancestor-dir | |
| 1277 | (progn | |
| 1278 | (setq ancestor-dir (expand-file-name ancestor-dir)) | |
| 1279 | (if (not (string-equal (substring ancestor-dir -1) "/")) | |
| 1280 | (setq ancestor-dir (concat ancestor-dir "/"))))) | |
| 1281 | (if output-dir | |
| 1282 | (progn | |
| 1283 | (setq output-dir (expand-file-name output-dir)) | |
| 1284 | (if (not (string-equal (substring output-dir -1) "/")) | |
| 1285 | (setq output-dir (concat output-dir "/"))))) | |
| 1286 | ;; Set the mark to where we start | |
| 1287 | (push-mark) | |
| 1288 | ;; Find out what files are in the directories. | |
| 1289 | (let* ((a-dir-files | |
| 1290 | (directory-files a-dir nil emerge-merge-directories-filename-regexp)) | |
| 1291 | (b-dir-files | |
| 1292 | (directory-files b-dir nil emerge-merge-directories-filename-regexp)) | |
| 1293 | (ancestor-dir-files | |
| 1294 | (and ancestor-dir | |
| 1295 | (directory-files ancestor-dir nil | |
| 1296 | emerge-merge-directories-filename-regexp))) | |
| 1297 | (all-files (sort (nconc (copy-sequence a-dir-files) | |
| 1298 | (copy-sequence b-dir-files) | |
| 1299 | (copy-sequence ancestor-dir-files)) | |
| 1300 | (function string-lessp)))) | |
| 1301 | ;; Remove duplicates from all-files. | |
| 1302 | (let ((p all-files)) | |
| 1303 | (while p | |
| 1304 | (if (and (cdr p) (string-equal (car p) (car (cdr p)))) | |
| 1305 | (setcdr p (cdr (cdr p))) | |
| 1306 | (setq p (cdr p))))) | |
| 1307 | ;; Generate the control lines for the various files. | |
| 1308 | (while all-files | |
| 1309 | (let ((f (car all-files))) | |
| 1310 | (setq all-files (cdr all-files)) | |
| 1311 | (if (and a-dir-files (string-equal (car a-dir-files) f)) | |
| 1312 | (progn | |
| 1313 | (insert "A=" a-dir f "\t") | |
| 1314 | (setq a-dir-files (cdr a-dir-files)))) | |
| 1315 | (if (and b-dir-files (string-equal (car b-dir-files) f)) | |
| 1316 | (progn | |
| 1317 | (insert "B=" b-dir f "\t") | |
| 1318 | (setq b-dir-files (cdr b-dir-files)))) | |
| 1319 | (if (and ancestor-dir-files (string-equal (car ancestor-dir-files) f)) | |
| 1320 | (progn | |
| 1321 | (insert "ancestor=" ancestor-dir f "\t") | |
| 1322 | (setq ancestor-dir-files (cdr ancestor-dir-files)))) | |
| 1323 | (if output-dir | |
| 1324 | (insert "output=" output-dir f "\t")) | |
| 1325 | (backward-delete-char 1) | |
| 1326 | (insert "\n"))))) | |
| 1327 | ||
| 3b4a6e27 JB |
1328 | ;;; Common setup routines |
| 1329 | ||
| 1330 | ;; Set up the window configuration. If POS is given, set the points to | |
| 1331 | ;; the beginnings of the buffers. | |
| 1332 | (defun emerge-setup-windows (buffer-A buffer-B merge-buffer &optional pos) | |
| 1333 | ;; Make sure we are not in the minibuffer window when we try to delete | |
| 1334 | ;; all other windows. | |
| 1335 | (if (eq (selected-window) (minibuffer-window)) | |
| 1336 | (other-window 1)) | |
| 1337 | (delete-other-windows) | |
| 1338 | (switch-to-buffer merge-buffer) | |
| 1339 | (emerge-refresh-mode-line) | |
| 1340 | (split-window-vertically) | |
| 1341 | (split-window-horizontally) | |
| 1342 | (switch-to-buffer buffer-A) | |
| 1343 | (if pos | |
| 1344 | (goto-char (point-min))) | |
| 1345 | (other-window 1) | |
| 1346 | (switch-to-buffer buffer-B) | |
| 1347 | (if pos | |
| 1348 | (goto-char (point-min))) | |
| 1349 | (other-window 1) | |
| 1350 | (if pos | |
| 1351 | (goto-char (point-min))) | |
| 1352 | ;; If diff/diff3 reports errors, display them rather than the merge buffer. | |
| 1353 | (if (/= 0 (emerge-eval-in-buffer emerge-diff-error-buffer (buffer-size))) | |
| 1354 | (progn | |
| 1355 | (ding) | |
| 1356 | (message "Errors found in diff/diff3 output. Merge buffer is %s." | |
| 1357 | (buffer-name emerge-merge-buffer)) | |
| 1358 | (switch-to-buffer emerge-diff-error-buffer)))) | |
| 1359 | ||
| 1360 | ;; Set up the keymap in the merge buffer | |
| 1361 | (defun emerge-set-keys () | |
| 1362 | ;; Set up fixed keymaps if necessary | |
| 1363 | (if (not emerge-basic-keymap) | |
| 1364 | (emerge-setup-fixed-keymaps)) | |
| 1365 | ;; Save the old local map | |
| 1366 | (setq emerge-old-keymap (current-local-map)) | |
| 1367 | ;; Construct the edit keymap | |
| 1368 | (setq emerge-edit-keymap (if emerge-old-keymap | |
| 1369 | (copy-keymap emerge-old-keymap) | |
| 1370 | (make-sparse-keymap))) | |
| 1371 | ;; Install the Emerge commands | |
| 1372 | (emerge-force-define-key emerge-edit-keymap emerge-command-prefix | |
| 1373 | 'emerge-basic-keymap) | |
| ff5f6ddd RS |
1374 | (define-key emerge-edit-keymap [menu-bar] (make-sparse-keymap)) |
| 1375 | ||
| 1376 | ;; Create the additional menu bar items. | |
| 1377 | (define-key emerge-edit-keymap [menu-bar options] | |
| 1378 | (cons "Options" emerge-options-menu)) | |
| 1379 | (define-key emerge-edit-keymap [menu-bar merge] | |
| 1380 | (cons "Merge" emerge-merge-menu)) | |
| 1381 | (define-key emerge-edit-keymap [menu-bar move] | |
| 1382 | (cons "Move" emerge-move-menu)) | |
| 1383 | ||
| 3b4a6e27 | 1384 | ;; Suppress write-file and save-buffer |
| 737e3892 RS |
1385 | (substitute-key-definition 'write-file |
| 1386 | 'emerge-query-write-file | |
| 1387 | emerge-edit-keymap) | |
| 1388 | (substitute-key-definition 'save-buffer | |
| 1389 | 'emerge-query-save-buffer | |
| 1390 | emerge-edit-keymap) | |
| 1391 | (substitute-key-definition 'write-file 'emerge-query-write-file | |
| 1392 | emerge-edit-keymap (current-global-map)) | |
| 1393 | (substitute-key-definition 'save-buffer 'emerge-query-save-buffer | |
| 1394 | emerge-edit-keymap (current-global-map)) | |
| 3b4a6e27 JB |
1395 | (use-local-map emerge-fast-keymap) |
| 1396 | (setq emerge-edit-mode nil) | |
| 1397 | (setq emerge-fast-mode t)) | |
| 1398 | ||
| 1399 | (defun emerge-remember-buffer-characteristics () | |
| 737e3892 RS |
1400 | "Record certain properties of the buffers being merged. |
| 1401 | Must be called in the merge buffer. Remembers read-only, modified, | |
| 1402 | auto-save, and saves them in buffer local variables. Sets the buffers | |
| 1403 | read-only and turns off `auto-save-mode'. | |
| 1404 | These characteristics are restored by `emerge-restore-buffer-characteristics'." | |
| 3b4a6e27 JB |
1405 | ;; force auto-save, because we will turn off auto-saving in buffers for the |
| 1406 | ;; duration | |
| 1407 | (do-auto-save) | |
| 1408 | ;; remember and alter buffer characteristics | |
| 1409 | (setq emerge-A-buffer-values | |
| 1410 | (emerge-eval-in-buffer | |
| 1411 | emerge-A-buffer | |
| 1412 | (prog1 | |
| 1413 | (emerge-save-variables emerge-saved-variables) | |
| 1414 | (emerge-restore-variables emerge-saved-variables | |
| 1415 | emerge-merging-values)))) | |
| 1416 | (setq emerge-B-buffer-values | |
| 1417 | (emerge-eval-in-buffer | |
| 1418 | emerge-B-buffer | |
| 1419 | (prog1 | |
| 1420 | (emerge-save-variables emerge-saved-variables) | |
| 1421 | (emerge-restore-variables emerge-saved-variables | |
| 1422 | emerge-merging-values))))) | |
| 1423 | ||
| 1424 | (defun emerge-restore-buffer-characteristics () | |
| 737e3892 | 1425 | "Restores characteristics saved by `emerge-remember-buffer-characteristics'." |
| 3b4a6e27 JB |
1426 | (let ((A-values emerge-A-buffer-values) |
| 1427 | (B-values emerge-B-buffer-values)) | |
| 1428 | (emerge-eval-in-buffer emerge-A-buffer | |
| 1429 | (emerge-restore-variables emerge-saved-variables | |
| 1430 | A-values)) | |
| 1431 | (emerge-eval-in-buffer emerge-B-buffer | |
| 1432 | (emerge-restore-variables emerge-saved-variables | |
| 1433 | B-values)))) | |
| 1434 | ||
| 4d4cd289 RS |
1435 | ;; Move to line DESIRED-LINE assuming we are at line CURRENT-LINE. |
| 1436 | ;; Return DESIRED-LINE. | |
| 1437 | (defun emerge-goto-line (desired-line current-line) | |
| 1438 | (forward-line (- desired-line current-line)) | |
| d9021674 | 1439 | desired-line) |
| 4d4cd289 | 1440 | |
| 3b4a6e27 JB |
1441 | (defun emerge-convert-diffs-to-markers (A-buffer |
| 1442 | B-buffer | |
| 1443 | merge-buffer | |
| 1444 | lineno-list) | |
| 1445 | (let* (marker-list | |
| 1446 | (A-point-min (emerge-eval-in-buffer A-buffer (point-min))) | |
| 1447 | (offset (1- A-point-min)) | |
| 3b4a6e27 | 1448 | (B-point-min (emerge-eval-in-buffer B-buffer (point-min))) |
| 4d4cd289 RS |
1449 | ;; Record current line number in each buffer |
| 1450 | ;; so we don't have to count from the beginning. | |
| d9021674 KH |
1451 | (a-line 1) |
| 1452 | (b-line 1)) | |
| 4d4cd289 RS |
1453 | (emerge-eval-in-buffer A-buffer (goto-char (point-min))) |
| 1454 | (emerge-eval-in-buffer B-buffer (goto-char (point-min))) | |
| 3b4a6e27 JB |
1455 | (while lineno-list |
| 1456 | (let* ((list-element (car lineno-list)) | |
| 1457 | a-begin-marker | |
| 1458 | a-end-marker | |
| 1459 | b-begin-marker | |
| 1460 | b-end-marker | |
| 151e4b9c RS |
1461 | merge-begin-marker |
| 1462 | merge-end-marker | |
| 3b4a6e27 JB |
1463 | (a-begin (aref list-element 0)) |
| 1464 | (a-end (aref list-element 1)) | |
| 1465 | (b-begin (aref list-element 2)) | |
| 1466 | (b-end (aref list-element 3)) | |
| 1467 | (state (aref list-element 4))) | |
| 1468 | ;; place markers at the appropriate places in the buffers | |
| 1469 | (emerge-eval-in-buffer | |
| 1470 | A-buffer | |
| d9021674 | 1471 | (setq a-line (emerge-goto-line a-begin a-line)) |
| 3b4a6e27 | 1472 | (setq a-begin-marker (point-marker)) |
| d9021674 | 1473 | (setq a-line (emerge-goto-line a-end a-line)) |
| 3b4a6e27 JB |
1474 | (setq a-end-marker (point-marker))) |
| 1475 | (emerge-eval-in-buffer | |
| 1476 | B-buffer | |
| d9021674 | 1477 | (setq b-line (emerge-goto-line b-begin b-line)) |
| 3b4a6e27 | 1478 | (setq b-begin-marker (point-marker)) |
| d9021674 | 1479 | (setq b-line (emerge-goto-line b-end b-line)) |
| 3b4a6e27 JB |
1480 | (setq b-end-marker (point-marker))) |
| 1481 | (setq merge-begin-marker (set-marker | |
| 1482 | (make-marker) | |
| 1483 | (- (marker-position a-begin-marker) | |
| 1484 | offset) | |
| 1485 | merge-buffer)) | |
| 1486 | (setq merge-end-marker (set-marker | |
| 1487 | (make-marker) | |
| 1488 | (- (marker-position a-end-marker) | |
| 1489 | offset) | |
| 1490 | merge-buffer)) | |
| 1491 | ;; record all the markers for this difference | |
| 1492 | (setq marker-list (cons (vector a-begin-marker a-end-marker | |
| 1493 | b-begin-marker b-end-marker | |
| 1494 | merge-begin-marker merge-end-marker | |
| 1495 | state) | |
| 1496 | marker-list))) | |
| 1497 | (setq lineno-list (cdr lineno-list))) | |
| 1498 | ;; convert the list of difference information into a vector for | |
| 1499 | ;; fast access | |
| 1500 | (setq emerge-difference-list (apply 'vector (nreverse marker-list))))) | |
| 1501 | ||
| 1502 | ;; If we have an ancestor, select all B variants that we prefer | |
| 1503 | (defun emerge-select-prefer-Bs () | |
| 1504 | (let ((n 0)) | |
| 1505 | (while (< n emerge-number-of-differences) | |
| 1506 | (if (eq (aref (aref emerge-difference-list n) 6) 'prefer-B) | |
| 1507 | (progn | |
| 1508 | (emerge-unselect-and-select-difference n t) | |
| 1509 | (emerge-select-B) | |
| 1510 | (aset (aref emerge-difference-list n) 6 'prefer-B))) | |
| 1511 | (setq n (1+ n)))) | |
| 1512 | (emerge-unselect-and-select-difference -1)) | |
| 1513 | ||
| 151e4b9c RS |
1514 | ;; Process the local-variables list at the end of the merged file, if |
| 1515 | ;; requested. | |
| 1516 | (defun emerge-handle-local-variables () | |
| 1517 | (if emerge-process-local-variables | |
| 1518 | (condition-case err | |
| 4a6e3980 | 1519 | (hack-local-variables) |
| 151e4b9c RS |
1520 | (error (message "Local-variables error in merge buffer: %s" |
| 1521 | (prin1-to-string err)))))) | |
| 1522 | ||
| 3b4a6e27 JB |
1523 | ;;; Common exit routines |
| 1524 | ||
| 1525 | (defun emerge-write-and-delete (file-out) | |
| 1526 | ;; clear screen format | |
| 1527 | (delete-other-windows) | |
| 1528 | ;; delete A, B, and ancestor buffers, if they haven't been changed | |
| 1529 | (if (not (buffer-modified-p emerge-A-buffer)) | |
| 1530 | (kill-buffer emerge-A-buffer)) | |
| 1531 | (if (not (buffer-modified-p emerge-B-buffer)) | |
| 1532 | (kill-buffer emerge-B-buffer)) | |
| 1533 | (if (and emerge-ancestor-buffer | |
| 1534 | (not (buffer-modified-p emerge-ancestor-buffer))) | |
| 1535 | (kill-buffer emerge-ancestor-buffer)) | |
| 1536 | ;; Write merge buffer to file | |
| 737e3892 RS |
1537 | (and file-out |
| 1538 | (write-file file-out))) | |
| 3b4a6e27 JB |
1539 | |
| 1540 | ;;; Commands | |
| 1541 | ||
| 1542 | (defun emerge-recenter (&optional arg) | |
| 737e3892 RS |
1543 | "Bring the highlighted region of all three merge buffers into view. |
| 1544 | This brings the buffers into view if they are in windows. | |
| 1545 | With an argument, reestablish the default three-window display." | |
| 3b4a6e27 JB |
1546 | (interactive "P") |
| 1547 | ;; If there is an argument, rebuild the window structure | |
| 1548 | (if arg | |
| 1549 | (emerge-setup-windows emerge-A-buffer emerge-B-buffer | |
| 1550 | emerge-merge-buffer)) | |
| 1551 | ;; Redisplay whatever buffers are showing, if there is a selected difference | |
| 1552 | (if (and (>= emerge-current-difference 0) | |
| 1553 | (< emerge-current-difference emerge-number-of-differences)) | |
| 1554 | (let* ((merge-buffer emerge-merge-buffer) | |
| 1555 | (buffer-A emerge-A-buffer) | |
| 1556 | (buffer-B emerge-B-buffer) | |
| 1557 | (window-A (get-buffer-window buffer-A)) | |
| 1558 | (window-B (get-buffer-window buffer-B)) | |
| 1559 | (merge-window (get-buffer-window merge-buffer)) | |
| 1560 | (diff-vector | |
| 1561 | (aref emerge-difference-list emerge-current-difference))) | |
| 1562 | (if window-A (progn | |
| 1563 | (select-window window-A) | |
| 1564 | (emerge-position-region | |
| 1565 | (- (aref diff-vector 0) | |
| 1566 | (1- emerge-before-flag-length)) | |
| 1567 | (+ (aref diff-vector 1) | |
| 1568 | (1- emerge-after-flag-length)) | |
| 1569 | (1+ (aref diff-vector 0))))) | |
| 1570 | (if window-B (progn | |
| 1571 | (select-window window-B) | |
| 1572 | (emerge-position-region | |
| 1573 | (- (aref diff-vector 2) | |
| 1574 | (1- emerge-before-flag-length)) | |
| 1575 | (+ (aref diff-vector 3) | |
| 1576 | (1- emerge-after-flag-length)) | |
| 1577 | (1+ (aref diff-vector 2))))) | |
| 1578 | (if merge-window (progn | |
| 1579 | (select-window merge-window) | |
| 1580 | (emerge-position-region | |
| 1581 | (- (aref diff-vector 4) | |
| 1582 | (1- emerge-before-flag-length)) | |
| 1583 | (+ (aref diff-vector 5) | |
| 1584 | (1- emerge-after-flag-length)) | |
| 1585 | (1+ (aref diff-vector 4)))))))) | |
| 1586 | ||
| 1587 | ;;; Window scrolling operations | |
| 1588 | ;; These operations are designed to scroll all three windows the same amount, | |
| 1589 | ;; so as to keep the text in them aligned. | |
| 1590 | ||
| 1591 | ;; Perform some operation on all three windows (if they are showing). | |
| 1592 | ;; Catches all errors on the operation in the A and B windows, but not | |
| 1593 | ;; in the merge window. Usually, errors come from scrolling off the | |
| 1594 | ;; beginning or end of the buffer, and this gives a nice error message: | |
| 1595 | ;; End of buffer is reported in the merge buffer, but if the scroll was | |
| 1596 | ;; possible in the A or B windows, it is performed there before the error | |
| 1597 | ;; is reported. | |
| 1598 | (defun emerge-operate-on-windows (operation arg) | |
| 1599 | (let* ((merge-buffer emerge-merge-buffer) | |
| 1600 | (buffer-A emerge-A-buffer) | |
| 1601 | (buffer-B emerge-B-buffer) | |
| 1602 | (window-A (get-buffer-window buffer-A)) | |
| 1603 | (window-B (get-buffer-window buffer-B)) | |
| 1604 | (merge-window (get-buffer-window merge-buffer))) | |
| 1605 | (if window-A (progn | |
| 1606 | (select-window window-A) | |
| 1607 | (condition-case nil | |
| 1608 | (funcall operation arg) | |
| 1609 | (error)))) | |
| 1610 | (if window-B (progn | |
| 1611 | (select-window window-B) | |
| 1612 | (condition-case nil | |
| 1613 | (funcall operation arg) | |
| 1614 | (error)))) | |
| 1615 | (if merge-window (progn | |
| 1616 | (select-window merge-window) | |
| 1617 | (funcall operation arg))))) | |
| 1618 | ||
| 1619 | (defun emerge-scroll-up (&optional arg) | |
| 1620 | "Scroll up all three merge buffers, if they are in windows. | |
| 737e3892 RS |
1621 | With argument N, scroll N lines; otherwise scroll by nearly |
| 1622 | the height of the merge window. | |
| 1623 | `C-u -' alone as argument scrolls half the height of the merge window." | |
| 3b4a6e27 JB |
1624 | (interactive "P") |
| 1625 | (emerge-operate-on-windows | |
| 1626 | 'scroll-up | |
| 1627 | ;; calculate argument to scroll-up | |
| 1628 | ;; if there is an explicit argument | |
| 1629 | (if (and arg (not (equal arg '-))) | |
| 1630 | ;; use it | |
| 1631 | (prefix-numeric-value arg) | |
| 1632 | ;; if not, see if we can determine a default amount (the window height) | |
| 1633 | (let ((merge-window (get-buffer-window emerge-merge-buffer))) | |
| 1634 | (if (null merge-window) | |
| 1635 | ;; no window, use nil | |
| 1636 | nil | |
| 1637 | (let ((default-amount | |
| 1638 | (- (window-height merge-window) 1 next-screen-context-lines))) | |
| 1639 | ;; the window was found | |
| 1640 | (if arg | |
| 1641 | ;; C-u as argument means half of default amount | |
| 1642 | (/ default-amount 2) | |
| 1643 | ;; no argument means default amount | |
| 1644 | default-amount))))))) | |
| 1645 | ||
| 1646 | (defun emerge-scroll-down (&optional arg) | |
| 1647 | "Scroll down all three merge buffers, if they are in windows. | |
| 737e3892 RS |
1648 | With argument N, scroll N lines; otherwise scroll by nearly |
| 1649 | the height of the merge window. | |
| 1650 | `C-u -' alone as argument scrolls half the height of the merge window." | |
| 3b4a6e27 JB |
1651 | (interactive "P") |
| 1652 | (emerge-operate-on-windows | |
| 1653 | 'scroll-down | |
| 1654 | ;; calculate argument to scroll-down | |
| 1655 | ;; if there is an explicit argument | |
| 1656 | (if (and arg (not (equal arg '-))) | |
| 1657 | ;; use it | |
| 1658 | (prefix-numeric-value arg) | |
| 1659 | ;; if not, see if we can determine a default amount (the window height) | |
| 1660 | (let ((merge-window (get-buffer-window emerge-merge-buffer))) | |
| 1661 | (if (null merge-window) | |
| 1662 | ;; no window, use nil | |
| 1663 | nil | |
| 1664 | (let ((default-amount | |
| 1665 | (- (window-height merge-window) 1 next-screen-context-lines))) | |
| 1666 | ;; the window was found | |
| 1667 | (if arg | |
| 1668 | ;; C-u as argument means half of default amount | |
| 1669 | (/ default-amount 2) | |
| 1670 | ;; no argument means default amount | |
| 1671 | default-amount))))))) | |
| 1672 | ||
| 1673 | (defun emerge-scroll-left (&optional arg) | |
| 1674 | "Scroll left all three merge buffers, if they are in windows. | |
| 737e3892 | 1675 | If an argument is given, that is how many columns are scrolled, else nearly |
| 151e4b9c | 1676 | the width of the A and B windows. `C-u -' alone as argument scrolls half the |
| 3b4a6e27 JB |
1677 | width of the A and B windows." |
| 1678 | (interactive "P") | |
| 1679 | (emerge-operate-on-windows | |
| 1680 | 'scroll-left | |
| 1681 | ;; calculate argument to scroll-left | |
| 1682 | ;; if there is an explicit argument | |
| 1683 | (if (and arg (not (equal arg '-))) | |
| 1684 | ;; use it | |
| 1685 | (prefix-numeric-value arg) | |
| 1686 | ;; if not, see if we can determine a default amount | |
| 1687 | ;; (half the window width) | |
| 1688 | (let ((merge-window (get-buffer-window emerge-merge-buffer))) | |
| 1689 | (if (null merge-window) | |
| 1690 | ;; no window, use nil | |
| 1691 | nil | |
| 1692 | (let ((default-amount | |
| 1693 | (- (/ (window-width merge-window) 2) 3))) | |
| 1694 | ;; the window was found | |
| 1695 | (if arg | |
| 1696 | ;; C-u as argument means half of default amount | |
| 1697 | (/ default-amount 2) | |
| 1698 | ;; no argument means default amount | |
| 1699 | default-amount))))))) | |
| 1700 | ||
| 1701 | (defun emerge-scroll-right (&optional arg) | |
| 1702 | "Scroll right all three merge buffers, if they are in windows. | |
| 737e3892 | 1703 | If an argument is given, that is how many columns are scrolled, else nearly |
| 151e4b9c | 1704 | the width of the A and B windows. `C-u -' alone as argument scrolls half the |
| 3b4a6e27 JB |
1705 | width of the A and B windows." |
| 1706 | (interactive "P") | |
| 1707 | (emerge-operate-on-windows | |
| 1708 | 'scroll-right | |
| 1709 | ;; calculate argument to scroll-right | |
| 1710 | ;; if there is an explicit argument | |
| 1711 | (if (and arg (not (equal arg '-))) | |
| 1712 | ;; use it | |
| 1713 | (prefix-numeric-value arg) | |
| 1714 | ;; if not, see if we can determine a default amount | |
| 1715 | ;; (half the window width) | |
| 1716 | (let ((merge-window (get-buffer-window emerge-merge-buffer))) | |
| 1717 | (if (null merge-window) | |
| 1718 | ;; no window, use nil | |
| 1719 | nil | |
| 1720 | (let ((default-amount | |
| 1721 | (- (/ (window-width merge-window) 2) 3))) | |
| 1722 | ;; the window was found | |
| 1723 | (if arg | |
| 1724 | ;; C-u as argument means half of default amount | |
| 1725 | (/ default-amount 2) | |
| 1726 | ;; no argument means default amount | |
| 1727 | default-amount))))))) | |
| 1728 | ||
| 1729 | (defun emerge-scroll-reset () | |
| 737e3892 RS |
1730 | "Reset horizontal scrolling in Emerge. |
| 1731 | This resets the horizontal scrolling of all three merge buffers | |
| 1732 | to the left margin, if they are in windows." | |
| 3b4a6e27 JB |
1733 | (interactive) |
| 1734 | (emerge-operate-on-windows | |
| 1735 | (function (lambda (x) (set-window-hscroll (selected-window) 0))) | |
| 1736 | nil)) | |
| 1737 | ||
| 1738 | ;; Attempt to show the region nicely. | |
| 1739 | ;; If there are min-lines lines above and below the region, then don't do | |
| 1740 | ;; anything. | |
| 1741 | ;; If not, recenter the region to make it so. | |
| 1742 | ;; If that isn't possible, remove context lines balancedly from top and botton | |
| 1743 | ;; so the entire region shows. | |
| 1744 | ;; If that isn't possible, show the top of the region. | |
| 1745 | ;; BEG must be at the beginning of a line. | |
| 1746 | (defun emerge-position-region (beg end pos) | |
| 1747 | ;; First test whether the entire region is visible with | |
| 1748 | ;; emerge-min-visible-lines above and below it | |
| 1749 | (if (not (and (<= (progn | |
| 1750 | (move-to-window-line emerge-min-visible-lines) | |
| 1751 | (point)) | |
| 1752 | beg) | |
| 1753 | (<= end (progn | |
| 1754 | (move-to-window-line | |
| 1755 | (- (1+ emerge-min-visible-lines))) | |
| 1756 | (point))))) | |
| 1757 | ;; We failed that test, see if it fits at all | |
| 1758 | ;; Meanwhile positioning it correctly in case it doesn't fit | |
| 1759 | (progn | |
| 1760 | (set-window-start (selected-window) beg) | |
| 151e4b9c | 1761 | (if (pos-visible-in-window-p end) |
| 3b4a6e27 JB |
1762 | ;; Determine the number of lines that the region occupies |
| 1763 | (let ((lines 0)) | |
| 1764 | (while (> end (progn | |
| 1765 | (move-to-window-line lines) | |
| 1766 | (point))) | |
| 1767 | (setq lines (1+ lines))) | |
| 1768 | ;; And position the beginning on the right line | |
| 1769 | (goto-char beg) | |
| 1770 | (recenter (/ (1+ (- (1- (window-height (selected-window))) | |
| 1771 | lines)) | |
| 1772 | 2)))))) | |
| 1773 | (goto-char pos)) | |
| 1774 | ||
| 1775 | (defun emerge-next-difference () | |
| 1776 | "Advance to the next difference." | |
| 1777 | (interactive) | |
| 1778 | (if (< emerge-current-difference emerge-number-of-differences) | |
| 1779 | (let ((n (1+ emerge-current-difference))) | |
| 1780 | (while (and emerge-skip-prefers | |
| 1781 | (< n emerge-number-of-differences) | |
| 1782 | (memq (aref (aref emerge-difference-list n) 6) | |
| 1783 | '(prefer-A prefer-B))) | |
| 1784 | (setq n (1+ n))) | |
| 1785 | (let ((buffer-read-only nil)) | |
| 1786 | (emerge-unselect-and-select-difference n))) | |
| 1787 | (error "At end"))) | |
| 1788 | ||
| 1789 | (defun emerge-previous-difference () | |
| 1790 | "Go to the previous difference." | |
| 1791 | (interactive) | |
| 1792 | (if (> emerge-current-difference -1) | |
| 1793 | (let ((n (1- emerge-current-difference))) | |
| 1794 | (while (and emerge-skip-prefers | |
| 1795 | (> n -1) | |
| 1796 | (memq (aref (aref emerge-difference-list n) 6) | |
| 1797 | '(prefer-A prefer-B))) | |
| 1798 | (setq n (1- n))) | |
| 1799 | (let ((buffer-read-only nil)) | |
| 1800 | (emerge-unselect-and-select-difference n))) | |
| 1801 | (error "At beginning"))) | |
| 1802 | ||
| 1803 | (defun emerge-jump-to-difference (difference-number) | |
| 1804 | "Go to the N-th difference." | |
| 1805 | (interactive "p") | |
| 1806 | (let ((buffer-read-only nil)) | |
| 1807 | (setq difference-number (1- difference-number)) | |
| 1808 | (if (and (>= difference-number -1) | |
| 1809 | (< difference-number (1+ emerge-number-of-differences))) | |
| 1810 | (emerge-unselect-and-select-difference difference-number) | |
| 1811 | (error "Bad difference number")))) | |
| 1812 | ||
| 737e3892 RS |
1813 | (defun emerge-abort () |
| 1814 | "Abort the Emerge session." | |
| 1815 | (interactive) | |
| 1816 | (emerge-quit t)) | |
| 1817 | ||
| 3b4a6e27 | 1818 | (defun emerge-quit (arg) |
| 737e3892 RS |
1819 | "Finish the Emerge session and exit Emerge. |
| 1820 | Prefix argument means to abort rather than successfully finish. | |
| 1821 | The difference depends on how the merge was started, | |
| 3b4a6e27 JB |
1822 | but usually means to not write over one of the original files, or to signal |
| 1823 | to some process which invoked Emerge a failure code. | |
| 1824 | ||
| 1825 | Unselects the selected difference, if any, restores the read-only and modified | |
| 1826 | flags of the merged file buffers, restores the local keymap of the merge | |
| 1827 | buffer, and sets off various emerge flags. Using Emerge commands in this | |
| 1828 | buffer after this will cause serious problems." | |
| 1829 | (interactive "P") | |
| 1830 | (if (prog1 | |
| 1831 | (y-or-n-p | |
| 1832 | (if (not arg) | |
| 1833 | "Do you really want to successfully finish this merge? " | |
| 1834 | "Do you really want to abort this merge? ")) | |
| 1835 | (message "")) | |
| 1836 | (emerge-really-quit arg))) | |
| 1837 | ||
| 1838 | ;; Perform the quit operations. | |
| 1839 | (defun emerge-really-quit (arg) | |
| 1840 | (setq buffer-read-only nil) | |
| 1841 | (emerge-unselect-and-select-difference -1) | |
| 1842 | (emerge-restore-buffer-characteristics) | |
| 1843 | ;; null out the difference markers so they don't slow down future editing | |
| 1844 | ;; operations | |
| 1845 | (mapcar (function (lambda (d) | |
| 1846 | (set-marker (aref d 0) nil) | |
| 1847 | (set-marker (aref d 1) nil) | |
| 1848 | (set-marker (aref d 2) nil) | |
| 1849 | (set-marker (aref d 3) nil) | |
| 1850 | (set-marker (aref d 4) nil) | |
| 1851 | (set-marker (aref d 5) nil))) | |
| 1852 | emerge-difference-list) | |
| 1853 | ;; allow them to be garbage collected | |
| 1854 | (setq emerge-difference-list nil) | |
| 1855 | ;; restore the local map | |
| 1856 | (use-local-map emerge-old-keymap) | |
| 1857 | ;; turn off all the emerge modes | |
| 1858 | (setq emerge-mode nil) | |
| 1859 | (setq emerge-fast-mode nil) | |
| 1860 | (setq emerge-edit-mode nil) | |
| 1861 | (setq emerge-auto-advance nil) | |
| 1862 | (setq emerge-skip-prefers nil) | |
| 1863 | ;; restore mode line | |
| 1864 | (kill-local-variable 'mode-line-buffer-identification) | |
| 1865 | (let ((emerge-prefix-argument arg)) | |
| 737e3892 | 1866 | (run-hooks 'emerge-quit-hook))) |
| 3b4a6e27 JB |
1867 | |
| 1868 | (defun emerge-select-A (&optional force) | |
| 737e3892 RS |
1869 | "Select the A variant of this difference. |
| 1870 | Refuses to function if this difference has been edited, i.e., if it | |
| 1871 | is neither the A nor the B variant. | |
| 1872 | A prefix argument forces the variant to be selected | |
| 1873 | even if the difference has been edited." | |
| 3b4a6e27 JB |
1874 | (interactive "P") |
| 1875 | (let ((operate | |
| 1876 | (function (lambda () | |
| 1877 | (emerge-select-A-edit merge-begin merge-end A-begin A-end) | |
| 1878 | (if emerge-auto-advance | |
| 1879 | (emerge-next-difference))))) | |
| 1880 | (operate-no-change | |
| 1881 | (function (lambda () | |
| 1882 | (if emerge-auto-advance | |
| 1883 | (emerge-next-difference)))))) | |
| 1884 | (emerge-select-version force operate-no-change operate operate))) | |
| 1885 | ||
| 1886 | ;; Actually select the A variant | |
| 1887 | (defun emerge-select-A-edit (merge-begin merge-end A-begin A-end) | |
| 1888 | (emerge-eval-in-buffer | |
| 1889 | emerge-merge-buffer | |
| 1890 | (delete-region merge-begin merge-end) | |
| 1891 | (goto-char merge-begin) | |
| 1892 | (insert-buffer-substring emerge-A-buffer A-begin A-end) | |
| 1893 | (goto-char merge-begin) | |
| 1894 | (aset diff-vector 6 'A) | |
| 1895 | (emerge-refresh-mode-line))) | |
| 1896 | ||
| 1897 | (defun emerge-select-B (&optional force) | |
| 737e3892 RS |
1898 | "Select the B variant of this difference. |
| 1899 | Refuses to function if this difference has been edited, i.e., if it | |
| 1900 | is neither the A nor the B variant. | |
| 1901 | A prefix argument forces the variant to be selected | |
| 1902 | even if the difference has been edited." | |
| 3b4a6e27 JB |
1903 | (interactive "P") |
| 1904 | (let ((operate | |
| 1905 | (function (lambda () | |
| 1906 | (emerge-select-B-edit merge-begin merge-end B-begin B-end) | |
| 1907 | (if emerge-auto-advance | |
| 1908 | (emerge-next-difference))))) | |
| 1909 | (operate-no-change | |
| 1910 | (function (lambda () | |
| 1911 | (if emerge-auto-advance | |
| 1912 | (emerge-next-difference)))))) | |
| 1913 | (emerge-select-version force operate operate-no-change operate))) | |
| 1914 | ||
| 1915 | ;; Actually select the B variant | |
| 1916 | (defun emerge-select-B-edit (merge-begin merge-end B-begin B-end) | |
| 1917 | (emerge-eval-in-buffer | |
| 1918 | emerge-merge-buffer | |
| 1919 | (delete-region merge-begin merge-end) | |
| 1920 | (goto-char merge-begin) | |
| 1921 | (insert-buffer-substring emerge-B-buffer B-begin B-end) | |
| 1922 | (goto-char merge-begin) | |
| 1923 | (aset diff-vector 6 'B) | |
| 1924 | (emerge-refresh-mode-line))) | |
| 1925 | ||
| 1926 | (defun emerge-default-A () | |
| 737e3892 RS |
1927 | "Make the A variant the default from here down. |
| 1928 | This selects the A variant for all differences from here down in the buffer | |
| 3b4a6e27 JB |
1929 | which are still defaulted, i.e., which the user has not selected and for |
| 1930 | which there is no preference." | |
| 1931 | (interactive) | |
| 1932 | (let ((buffer-read-only nil)) | |
| 1933 | (let ((selected-difference emerge-current-difference) | |
| 1934 | (n (max emerge-current-difference 0))) | |
| 1935 | (while (< n emerge-number-of-differences) | |
| 1936 | (let ((diff-vector (aref emerge-difference-list n))) | |
| 1937 | (if (eq (aref diff-vector 6) 'default-B) | |
| 1938 | (progn | |
| 1939 | (emerge-unselect-and-select-difference n t) | |
| 1940 | (emerge-select-A) | |
| 1941 | (aset diff-vector 6 'default-A)))) | |
| 1942 | (setq n (1+ n)) | |
| e00fcc05 | 1943 | (if (zerop (% n 10)) |
| 3b4a6e27 JB |
1944 | (message "Setting default to A...%d" n))) |
| 1945 | (emerge-unselect-and-select-difference selected-difference))) | |
| ff5f6ddd | 1946 | (message "Default choice is now A")) |
| 3b4a6e27 JB |
1947 | |
| 1948 | (defun emerge-default-B () | |
| 737e3892 RS |
1949 | "Make the B variant the default from here down. |
| 1950 | This selects the B variant for all differences from here down in the buffer | |
| 3b4a6e27 JB |
1951 | which are still defaulted, i.e., which the user has not selected and for |
| 1952 | which there is no preference." | |
| 1953 | (interactive) | |
| 1954 | (let ((buffer-read-only nil)) | |
| 1955 | (let ((selected-difference emerge-current-difference) | |
| 1956 | (n (max emerge-current-difference 0))) | |
| 1957 | (while (< n emerge-number-of-differences) | |
| 1958 | (let ((diff-vector (aref emerge-difference-list n))) | |
| 1959 | (if (eq (aref diff-vector 6) 'default-A) | |
| 1960 | (progn | |
| 1961 | (emerge-unselect-and-select-difference n t) | |
| 1962 | (emerge-select-B) | |
| 1963 | (aset diff-vector 6 'default-B)))) | |
| 1964 | (setq n (1+ n)) | |
| e00fcc05 | 1965 | (if (zerop (% n 10)) |
| 3b4a6e27 JB |
1966 | (message "Setting default to B...%d" n))) |
| 1967 | (emerge-unselect-and-select-difference selected-difference))) | |
| ff5f6ddd | 1968 | (message "Default choice is now B")) |
| 3b4a6e27 JB |
1969 | |
| 1970 | (defun emerge-fast-mode () | |
| 737e3892 RS |
1971 | "Set fast mode, for Emerge. |
| 1972 | In this mode ordinary Emacs commands are disabled, and Emerge commands | |
| 1973 | need not be prefixed with \\<emerge-fast-keymap>\\[emerge-basic-keymap]." | |
| 3b4a6e27 JB |
1974 | (interactive) |
| 1975 | (setq buffer-read-only t) | |
| 1976 | (use-local-map emerge-fast-keymap) | |
| 1977 | (setq emerge-mode t) | |
| 1978 | (setq emerge-fast-mode t) | |
| 1979 | (setq emerge-edit-mode nil) | |
| 1980 | (message "Fast mode set") | |
| 1981 | ;; force mode line redisplay | |
| 1982 | (set-buffer-modified-p (buffer-modified-p))) | |
| 1983 | ||
| 1984 | (defun emerge-edit-mode () | |
| 737e3892 RS |
1985 | "Set edit mode, for Emerge. |
| 1986 | In this mode ordinary Emacs commands are available, and Emerge commands | |
| 1987 | must be prefixed with \\<emerge-fast-keymap>\\[emerge-basic-keymap]." | |
| 3b4a6e27 JB |
1988 | (interactive) |
| 1989 | (setq buffer-read-only nil) | |
| 1990 | (use-local-map emerge-edit-keymap) | |
| 1991 | (setq emerge-mode t) | |
| 1992 | (setq emerge-fast-mode nil) | |
| 1993 | (setq emerge-edit-mode t) | |
| 1994 | (message "Edit mode set") | |
| 1995 | ;; force mode line redisplay | |
| 1996 | (set-buffer-modified-p (buffer-modified-p))) | |
| 1997 | ||
| 1998 | (defun emerge-auto-advance (arg) | |
| 737e3892 RS |
1999 | "Toggle Auto-Advance mode, for Emerge. |
| 2000 | This mode causes `emerge-select-A' and `emerge-select-B' to automatically | |
| 2001 | advance to the next difference. | |
| 2002 | With a positive argument, turn on Auto-Advance mode. | |
| 2003 | With a negative argument, turn off Auto-Advance mode." | |
| 3b4a6e27 JB |
2004 | (interactive "P") |
| 2005 | (setq emerge-auto-advance (if (null arg) | |
| 2006 | (not emerge-auto-advance) | |
| 2007 | (> (prefix-numeric-value arg) 0))) | |
| 2008 | (message (if emerge-skip-prefers | |
| 2009 | "Auto-advance set" | |
| 2010 | "Auto-advance cleared")) | |
| 2011 | ;; force mode line redisplay | |
| 2012 | (set-buffer-modified-p (buffer-modified-p))) | |
| 2013 | ||
| 2014 | (defun emerge-skip-prefers (arg) | |
| 737e3892 RS |
2015 | "Toggle Skip-Prefers mode, for Emerge. |
| 2016 | This mode causes `emerge-next-difference' and `emerge-previous-difference' | |
| 2017 | to automatically skip over differences for which there is a preference. | |
| 2018 | With a positive argument, turn on Skip-Prefers mode. | |
| 2019 | With a negative argument, turn off Skip-Prefers mode." | |
| 3b4a6e27 JB |
2020 | (interactive "P") |
| 2021 | (setq emerge-skip-prefers (if (null arg) | |
| 2022 | (not emerge-skip-prefers) | |
| 2023 | (> (prefix-numeric-value arg) 0))) | |
| 2024 | (message (if emerge-skip-prefers | |
| 2025 | "Skip-prefers set" | |
| 2026 | "Skip-prefers cleared")) | |
| 2027 | ;; force mode line redisplay | |
| 2028 | (set-buffer-modified-p (buffer-modified-p))) | |
| 2029 | ||
| 2030 | (defun emerge-copy-as-kill-A () | |
| 2031 | "Put the A variant of this difference in the kill ring." | |
| 2032 | (interactive) | |
| 2033 | (emerge-validate-difference) | |
| 2034 | (let* ((diff-vector | |
| 2035 | (aref emerge-difference-list emerge-current-difference)) | |
| 2036 | (A-begin (1+ (aref diff-vector 0))) | |
| 2037 | (A-end (1- (aref diff-vector 1))) | |
| 2038 | ;; so further kills don't append | |
| 2039 | this-command) | |
| 2040 | (save-excursion | |
| 2041 | (set-buffer emerge-A-buffer) | |
| 2042 | (copy-region-as-kill A-begin A-end)))) | |
| 2043 | ||
| 2044 | (defun emerge-copy-as-kill-B () | |
| 2045 | "Put the B variant of this difference in the kill ring." | |
| 2046 | (interactive) | |
| 2047 | (emerge-validate-difference) | |
| 2048 | (let* ((diff-vector | |
| 2049 | (aref emerge-difference-list emerge-current-difference)) | |
| 2050 | (B-begin (1+ (aref diff-vector 2))) | |
| 2051 | (B-end (1- (aref diff-vector 3))) | |
| 2052 | ;; so further kills don't append | |
| 2053 | this-command) | |
| 2054 | (save-excursion | |
| 2055 | (set-buffer emerge-B-buffer) | |
| 2056 | (copy-region-as-kill B-begin B-end)))) | |
| 2057 | ||
| 2058 | (defun emerge-insert-A (arg) | |
| 2059 | "Insert the A variant of this difference at the point. | |
| 2060 | Leaves point after text, mark before. | |
| 2061 | With prefix argument, puts point before, mark after." | |
| 2062 | (interactive "P") | |
| 2063 | (emerge-validate-difference) | |
| 2064 | (let* ((diff-vector | |
| 2065 | (aref emerge-difference-list emerge-current-difference)) | |
| 2066 | (A-begin (1+ (aref diff-vector 0))) | |
| 2067 | (A-end (1- (aref diff-vector 1))) | |
| 2068 | (opoint (point)) | |
| 2069 | (buffer-read-only nil)) | |
| 2070 | (insert-buffer-substring emerge-A-buffer A-begin A-end) | |
| 2071 | (if (not arg) | |
| 2072 | (set-mark opoint) | |
| 2073 | (set-mark (point)) | |
| 2074 | (goto-char opoint)))) | |
| 2075 | ||
| 2076 | (defun emerge-insert-B (arg) | |
| 2077 | "Insert the B variant of this difference at the point. | |
| 2078 | Leaves point after text, mark before. | |
| 2079 | With prefix argument, puts point before, mark after." | |
| 2080 | (interactive "P") | |
| 2081 | (emerge-validate-difference) | |
| 2082 | (let* ((diff-vector | |
| 2083 | (aref emerge-difference-list emerge-current-difference)) | |
| 2084 | (B-begin (1+ (aref diff-vector 2))) | |
| 2085 | (B-end (1- (aref diff-vector 3))) | |
| 2086 | (opoint (point)) | |
| 2087 | (buffer-read-only nil)) | |
| 2088 | (insert-buffer-substring emerge-B-buffer B-begin B-end) | |
| 2089 | (if (not arg) | |
| 2090 | (set-mark opoint) | |
| 2091 | (set-mark (point)) | |
| 2092 | (goto-char opoint)))) | |
| 2093 | ||
| 2094 | (defun emerge-mark-difference (arg) | |
| 2095 | "Leaves the point before this difference and the mark after it. | |
| 2096 | With prefix argument, puts mark before, point after." | |
| 2097 | (interactive "P") | |
| 2098 | (emerge-validate-difference) | |
| 2099 | (let* ((diff-vector | |
| 2100 | (aref emerge-difference-list emerge-current-difference)) | |
| 2101 | (merge-begin (1+ (aref diff-vector 4))) | |
| 2102 | (merge-end (1- (aref diff-vector 5)))) | |
| 2103 | (if (not arg) | |
| 2104 | (progn | |
| 2105 | (goto-char merge-begin) | |
| 2106 | (set-mark merge-end)) | |
| 2107 | (goto-char merge-end) | |
| 2108 | (set-mark merge-begin)))) | |
| 2109 | ||
| 2110 | (defun emerge-file-names () | |
| 2111 | "Show the names of the buffers or files being operated on by Emerge. | |
| 737e3892 | 2112 | Use C-u l to reset the windows afterward." |
| 3b4a6e27 JB |
2113 | (interactive) |
| 2114 | (delete-other-windows) | |
| 737e3892 | 2115 | (let ((temp-buffer-show-function |
| 3b4a6e27 JB |
2116 | (function (lambda (buf) |
| 2117 | (split-window-vertically) | |
| 2118 | (switch-to-buffer buf) | |
| 2119 | (other-window 1))))) | |
| 2120 | (with-output-to-temp-buffer "*Help*" | |
| 2121 | (emerge-eval-in-buffer emerge-A-buffer | |
| 2122 | (if buffer-file-name | |
| 2123 | (progn | |
| 2124 | (princ "File A is: ") | |
| 2125 | (princ buffer-file-name)) | |
| 2126 | (progn | |
| 2127 | (princ "Buffer A is: ") | |
| 2128 | (princ (buffer-name)))) | |
| 2129 | (princ "\n")) | |
| 2130 | (emerge-eval-in-buffer emerge-B-buffer | |
| 2131 | (if buffer-file-name | |
| 2132 | (progn | |
| 2133 | (princ "File B is: ") | |
| 2134 | (princ buffer-file-name)) | |
| 2135 | (progn | |
| 2136 | (princ "Buffer B is: ") | |
| 2137 | (princ (buffer-name)))) | |
| 2138 | (princ "\n")) | |
| 2139 | (if emerge-ancestor-buffer | |
| 2140 | (emerge-eval-in-buffer emerge-ancestor-buffer | |
| 2141 | (if buffer-file-name | |
| 2142 | (progn | |
| 2143 | (princ "Ancestor file is: ") | |
| 2144 | (princ buffer-file-name)) | |
| 2145 | (progn | |
| 2146 | (princ "Ancestor buffer is: ") | |
| 2147 | (princ (buffer-name)))) | |
| 2148 | (princ "\n"))) | |
| 2149 | (princ emerge-output-description)))) | |
| 2150 | ||
| 2151 | (defun emerge-join-differences (arg) | |
| 737e3892 | 2152 | "Join the selected difference with the following one. |
| eb8c3be9 | 2153 | With a prefix argument, join with the preceding one." |
| 3b4a6e27 JB |
2154 | (interactive "P") |
| 2155 | (let ((n emerge-current-difference)) | |
| 2156 | ;; adjust n to be first difference to join | |
| 2157 | (if arg | |
| 2158 | (setq n (1- n))) | |
| 2159 | ;; n and n+1 are the differences to join | |
| 2160 | ;; check that they are both differences | |
| 2161 | (if (or (< n 0) (>= n (1- emerge-number-of-differences))) | |
| 2162 | (error "Incorrect differences to join")) | |
| 2163 | ;; remove the flags | |
| 2164 | (emerge-unselect-difference emerge-current-difference) | |
| 2165 | ;; decrement total number of differences | |
| 2166 | (setq emerge-number-of-differences (1- emerge-number-of-differences)) | |
| 2167 | ;; build new differences vector | |
| 2168 | (let ((i 0) | |
| 2169 | (new-differences (make-vector emerge-number-of-differences nil))) | |
| 2170 | (while (< i emerge-number-of-differences) | |
| 2171 | (aset new-differences i | |
| 2172 | (cond | |
| 2173 | ((< i n) (aref emerge-difference-list i)) | |
| 2174 | ((> i n) (aref emerge-difference-list (1+ i))) | |
| 2175 | (t (let ((prev (aref emerge-difference-list i)) | |
| 2176 | (next (aref emerge-difference-list (1+ i)))) | |
| 2177 | (vector (aref prev 0) | |
| 2178 | (aref next 1) | |
| 2179 | (aref prev 2) | |
| 2180 | (aref next 3) | |
| 2181 | (aref prev 4) | |
| 2182 | (aref next 5) | |
| 2183 | (let ((ps (aref prev 6)) | |
| 2184 | (ns (aref next 6))) | |
| 2185 | (cond | |
| 2186 | ((eq ps ns) | |
| 2187 | ps) | |
| 2188 | ((and (or (eq ps 'B) (eq ps 'prefer-B)) | |
| 2189 | (or (eq ns 'B) (eq ns 'prefer-B))) | |
| 2190 | 'B) | |
| 2191 | (t 'A)))))))) | |
| 2192 | (setq i (1+ i))) | |
| 2193 | (setq emerge-difference-list new-differences)) | |
| 2194 | ;; set the current difference correctly | |
| 2195 | (setq emerge-current-difference n) | |
| 2196 | ;; fix the mode line | |
| 2197 | (emerge-refresh-mode-line) | |
| 2198 | ;; reinsert the flags | |
| 2199 | (emerge-select-difference emerge-current-difference) | |
| 2200 | (emerge-recenter))) | |
| 2201 | ||
| 2202 | (defun emerge-split-difference () | |
| 2203 | "Split the current difference where the points are in the three windows." | |
| 2204 | (interactive) | |
| 2205 | (let ((n emerge-current-difference)) | |
| 2206 | ;; check that this is a valid difference | |
| 2207 | (emerge-validate-difference) | |
| 2208 | ;; get the point values and old difference | |
| 2209 | (let ((A-point (emerge-eval-in-buffer emerge-A-buffer | |
| 2210 | (point-marker))) | |
| 2211 | (B-point (emerge-eval-in-buffer emerge-B-buffer | |
| 2212 | (point-marker))) | |
| 2213 | (merge-point (point-marker)) | |
| 2214 | (old-diff (aref emerge-difference-list n))) | |
| 2215 | ;; check location of the points, give error if they aren't in the | |
| 2216 | ;; differences | |
| 2217 | (if (or (< A-point (aref old-diff 0)) | |
| 2218 | (> A-point (aref old-diff 1))) | |
| 2219 | (error "Point outside of difference in A buffer")) | |
| 2220 | (if (or (< B-point (aref old-diff 2)) | |
| 2221 | (> B-point (aref old-diff 3))) | |
| 2222 | (error "Point outside of difference in B buffer")) | |
| 2223 | (if (or (< merge-point (aref old-diff 4)) | |
| 2224 | (> merge-point (aref old-diff 5))) | |
| 2225 | (error "Point outside of difference in merge buffer")) | |
| 2226 | ;; remove the flags | |
| 2227 | (emerge-unselect-difference emerge-current-difference) | |
| 2228 | ;; increment total number of differences | |
| 2229 | (setq emerge-number-of-differences (1+ emerge-number-of-differences)) | |
| 2230 | ;; build new differences vector | |
| 2231 | (let ((i 0) | |
| 2232 | (new-differences (make-vector emerge-number-of-differences nil))) | |
| 2233 | (while (< i emerge-number-of-differences) | |
| 2234 | (aset new-differences i | |
| 2235 | (cond | |
| 2236 | ((< i n) | |
| 2237 | (aref emerge-difference-list i)) | |
| 2238 | ((> i (1+ n)) | |
| 2239 | (aref emerge-difference-list (1- i))) | |
| 2240 | ((= i n) | |
| 2241 | (vector (aref old-diff 0) | |
| 2242 | A-point | |
| 2243 | (aref old-diff 2) | |
| 2244 | B-point | |
| 2245 | (aref old-diff 4) | |
| 2246 | merge-point | |
| 2247 | (aref old-diff 6))) | |
| 2248 | (t | |
| 2249 | (vector (copy-marker A-point) | |
| 2250 | (aref old-diff 1) | |
| 2251 | (copy-marker B-point) | |
| 2252 | (aref old-diff 3) | |
| 2253 | (copy-marker merge-point) | |
| 2254 | (aref old-diff 5) | |
| 2255 | (aref old-diff 6))))) | |
| 2256 | (setq i (1+ i))) | |
| 2257 | (setq emerge-difference-list new-differences)) | |
| 2258 | ;; set the current difference correctly | |
| 2259 | (setq emerge-current-difference n) | |
| 2260 | ;; fix the mode line | |
| 2261 | (emerge-refresh-mode-line) | |
| 2262 | ;; reinsert the flags | |
| 2263 | (emerge-select-difference emerge-current-difference) | |
| 2264 | (emerge-recenter)))) | |
| 2265 | ||
| 2266 | (defun emerge-trim-difference () | |
| 737e3892 RS |
2267 | "Trim lines off top and bottom of difference that are the same. |
| 2268 | If lines are the same in both the A and the B versions, strip them off. | |
| 2269 | \(This can happen when the A and B versions have common lines that the | |
| 2270 | ancestor version does not share.)" | |
| 3b4a6e27 JB |
2271 | (interactive) |
| 2272 | ;; make sure we are in a real difference | |
| 2273 | (emerge-validate-difference) | |
| 2274 | ;; remove the flags | |
| 2275 | (emerge-unselect-difference emerge-current-difference) | |
| 2276 | (let* ((diff (aref emerge-difference-list emerge-current-difference)) | |
| 2277 | (top-a (marker-position (aref diff 0))) | |
| 2278 | (bottom-a (marker-position (aref diff 1))) | |
| 2279 | (top-b (marker-position (aref diff 2))) | |
| 2280 | (bottom-b (marker-position (aref diff 3))) | |
| 2281 | (top-m (marker-position (aref diff 4))) | |
| 2282 | (bottom-m (marker-position (aref diff 5))) | |
| 2283 | size success sa sb sm) | |
| 2284 | ;; move down the tops of the difference regions as much as possible | |
| 2285 | ;; Try advancing comparing 1000 chars at a time. | |
| 2286 | ;; When that fails, go 500 chars at a time, and so on. | |
| 2287 | (setq size 1000) | |
| 2288 | (while (> size 0) | |
| 2289 | (setq success t) | |
| 2290 | (while success | |
| 2291 | (setq size (min size (- bottom-a top-a) (- bottom-b top-b) | |
| 2292 | (- bottom-m top-m))) | |
| 2293 | (setq sa (emerge-eval-in-buffer emerge-A-buffer | |
| 2294 | (buffer-substring top-a | |
| 2295 | (+ size top-a)))) | |
| 2296 | (setq sb (emerge-eval-in-buffer emerge-B-buffer | |
| 2297 | (buffer-substring top-b | |
| 2298 | (+ size top-b)))) | |
| 2299 | (setq sm (buffer-substring top-m (+ size top-m))) | |
| 2300 | (setq success (and (> size 0) (equal sa sb) (equal sb sm))) | |
| 2301 | (if success | |
| 2302 | (setq top-a (+ top-a size) | |
| 2303 | top-b (+ top-b size) | |
| 2304 | top-m (+ top-m size)))) | |
| 2305 | (setq size (/ size 2))) | |
| 2306 | ;; move up the bottoms of the difference regions as much as possible | |
| 2307 | ;; Try advancing comparing 1000 chars at a time. | |
| 2308 | ;; When that fails, go 500 chars at a time, and so on. | |
| 2309 | (setq size 1000) | |
| 2310 | (while (> size 0) | |
| 2311 | (setq success t) | |
| 2312 | (while success | |
| 2313 | (setq size (min size (- bottom-a top-a) (- bottom-b top-b) | |
| 2314 | (- bottom-m top-m))) | |
| 2315 | (setq sa (emerge-eval-in-buffer emerge-A-buffer | |
| 2316 | (buffer-substring (- bottom-a size) | |
| 2317 | bottom-a))) | |
| 2318 | (setq sb (emerge-eval-in-buffer emerge-B-buffer | |
| 2319 | (buffer-substring (- bottom-b size) | |
| 2320 | bottom-b))) | |
| 2321 | (setq sm (buffer-substring (- bottom-m size) bottom-m)) | |
| 2322 | (setq success (and (> size 0) (equal sa sb) (equal sb sm))) | |
| 2323 | (if success | |
| 2324 | (setq bottom-a (- bottom-a size) | |
| 2325 | bottom-b (- bottom-b size) | |
| 2326 | bottom-m (- bottom-m size)))) | |
| 2327 | (setq size (/ size 2))) | |
| 2328 | ;; {top,bottom}-{a,b,m} are now set at the new beginnings and ends | |
| 2329 | ;; of the difference regions. Move them to the beginning of lines, as | |
| 2330 | ;; appropriate. | |
| 2331 | (emerge-eval-in-buffer emerge-A-buffer | |
| 2332 | (goto-char top-a) | |
| 2333 | (beginning-of-line) | |
| 2334 | (aset diff 0 (point-marker)) | |
| 2335 | (goto-char bottom-a) | |
| 2336 | (beginning-of-line 2) | |
| 2337 | (aset diff 1 (point-marker))) | |
| 2338 | (emerge-eval-in-buffer emerge-B-buffer | |
| 2339 | (goto-char top-b) | |
| 2340 | (beginning-of-line) | |
| 2341 | (aset diff 2 (point-marker)) | |
| 2342 | (goto-char bottom-b) | |
| 2343 | (beginning-of-line 2) | |
| 2344 | (aset diff 3 (point-marker))) | |
| 2345 | (goto-char top-m) | |
| 2346 | (beginning-of-line) | |
| 2347 | (aset diff 4 (point-marker)) | |
| 2348 | (goto-char bottom-m) | |
| 2349 | (beginning-of-line 2) | |
| 2350 | (aset diff 5 (point-marker)) | |
| 2351 | ;; put the flags back in, recenter the display | |
| 2352 | (emerge-select-difference emerge-current-difference) | |
| 2353 | (emerge-recenter))) | |
| 2354 | ||
| 2355 | (defun emerge-find-difference (arg) | |
| 2356 | "Find the difference containing the current position of the point. | |
| 2357 | If there is no containing difference and the prefix argument is positive, | |
| 2358 | it finds the nearest following difference. A negative prefix argument finds | |
| 661d3230 | 2359 | the nearest previous difference." |
| 8bfce8a7 | 2360 | (interactive "P") |
| 661d3230 RS |
2361 | (cond ((eq (current-buffer) emerge-A-buffer) |
| 2362 | (emerge-find-difference-A arg)) | |
| 2363 | ((eq (current-buffer) emerge-B-buffer) | |
| 2364 | (emerge-find-difference-B arg)) | |
| 2365 | (t (emerge-find-difference-merge arg)))) | |
| 2366 | ||
| 2367 | (defun emerge-find-difference-merge (arg) | |
| 2368 | "Find the difference containing point, in the merge buffer. | |
| 2369 | If there is no containing difference and the prefix argument is positive, | |
| 2370 | it finds the nearest following difference. A negative prefix argument finds | |
| 3b4a6e27 JB |
2371 | the nearest previous difference." |
| 2372 | (interactive "P") | |
| 2373 | ;; search for the point in the merge buffer, using the markers | |
| 2374 | ;; for the beginning and end of the differences in the merge buffer | |
| 2375 | (emerge-find-difference1 arg (point) 4 5)) | |
| 2376 | ||
| 2377 | (defun emerge-find-difference-A (arg) | |
| 661d3230 | 2378 | "Find the difference containing point, in the A buffer. |
| 737e3892 | 2379 | This command must be executed in the merge buffer. |
| 3b4a6e27 JB |
2380 | If there is no containing difference and the prefix argument is positive, |
| 2381 | it finds the nearest following difference. A negative prefix argument finds | |
| 2382 | the nearest previous difference." | |
| 2383 | (interactive "P") | |
| 2384 | ;; search for the point in the A buffer, using the markers | |
| 2385 | ;; for the beginning and end of the differences in the A buffer | |
| 2386 | (emerge-find-difference1 arg | |
| 2387 | (emerge-eval-in-buffer emerge-A-buffer (point)) | |
| 2388 | 0 1)) | |
| 2389 | ||
| 2390 | (defun emerge-find-difference-B (arg) | |
| 661d3230 | 2391 | "Find the difference containing point, in the B buffer. |
| 737e3892 | 2392 | This command must be executed in the merge buffer. |
| 3b4a6e27 JB |
2393 | If there is no containing difference and the prefix argument is positive, |
| 2394 | it finds the nearest following difference. A negative prefix argument finds | |
| 2395 | the nearest previous difference." | |
| 2396 | (interactive "P") | |
| 2397 | ;; search for the point in the B buffer, using the markers | |
| 2398 | ;; for the beginning and end of the differences in the B buffer | |
| 2399 | (emerge-find-difference1 arg | |
| 2400 | (emerge-eval-in-buffer emerge-B-buffer (point)) | |
| 2401 | 2 3)) | |
| 2402 | ||
| 2403 | (defun emerge-find-difference1 (arg location begin end) | |
| 2404 | (let* ((index | |
| 2405 | ;; find first difference containing or after the current position | |
| 2406 | (catch 'search | |
| 2407 | (let ((n 0)) | |
| 2408 | (while (< n emerge-number-of-differences) | |
| 2409 | (let ((diff-vector (aref emerge-difference-list n))) | |
| 2410 | (if (<= location (marker-position (aref diff-vector end))) | |
| 2411 | (throw 'search n))) | |
| 2412 | (setq n (1+ n)))) | |
| 2413 | emerge-number-of-differences)) | |
| 2414 | (contains | |
| 2415 | ;; whether the found difference contains the current position | |
| 2416 | (and (< index emerge-number-of-differences) | |
| 2417 | (<= (marker-position (aref (aref emerge-difference-list index) | |
| 2418 | begin)) | |
| 2419 | location))) | |
| 2420 | (arg-value | |
| 2421 | ;; numeric value of prefix argument | |
| 2422 | (prefix-numeric-value arg))) | |
| 2423 | (emerge-unselect-and-select-difference | |
| 2424 | (cond | |
| 2425 | ;; if the point is in a difference, select it | |
| 2426 | (contains index) | |
| 2427 | ;; if the arg is nil and the point is not in a difference, error | |
| 2428 | ((null arg) (error "No difference contains point")) | |
| 2429 | ;; if the arg is positive, select the following difference | |
| 2430 | ((> arg-value 0) | |
| 2431 | (if (< index emerge-number-of-differences) | |
| 2432 | index | |
| 2433 | (error "No difference contains or follows point"))) | |
| eb8c3be9 | 2434 | ;; if the arg is negative, select the preceding difference |
| 3b4a6e27 JB |
2435 | (t |
| 2436 | (if (> index 0) | |
| 2437 | (1- index) | |
| eb8c3be9 | 2438 | (error "No difference contains or precedes point"))))))) |
| 3b4a6e27 JB |
2439 | |
| 2440 | (defun emerge-line-numbers () | |
| 737e3892 RS |
2441 | "Display the current line numbers. |
| 2442 | This function displays the line numbers of the points in the A, B, and | |
| 3b4a6e27 JB |
2443 | merge buffers." |
| 2444 | (interactive) | |
| 2445 | (let* ((valid-diff | |
| 2446 | (and (>= emerge-current-difference 0) | |
| 2447 | (< emerge-current-difference emerge-number-of-differences))) | |
| 2448 | (diff (and valid-diff | |
| 2449 | (aref emerge-difference-list emerge-current-difference))) | |
| 2450 | (merge-line (emerge-line-number-in-buf 4 5)) | |
| 2451 | (A-line (emerge-eval-in-buffer emerge-A-buffer | |
| 2452 | (emerge-line-number-in-buf 0 1))) | |
| 2453 | (B-line (emerge-eval-in-buffer emerge-B-buffer | |
| 2454 | (emerge-line-number-in-buf 2 3)))) | |
| 2455 | (message "At lines: merge = %d, A = %d, B = %d" | |
| 2456 | merge-line A-line B-line))) | |
| 2457 | ||
| 2458 | (defun emerge-line-number-in-buf (begin-marker end-marker) | |
| 2459 | (let (temp) | |
| 2460 | (setq temp (save-excursion | |
| 2461 | (beginning-of-line) | |
| 2462 | (1+ (count-lines 1 (point))))) | |
| 2463 | (if valid-diff | |
| 2464 | (progn | |
| 2465 | (if (> (point) (aref diff begin-marker)) | |
| 2466 | (setq temp (- temp emerge-before-flag-lines))) | |
| 2467 | (if (> (point) (aref diff end-marker)) | |
| 2468 | (setq temp (- temp emerge-after-flag-lines))))) | |
| 2469 | temp)) | |
| 2470 | ||
| ff5f6ddd RS |
2471 | (defun emerge-set-combine-template (string &optional localize) |
| 2472 | "Set `emerge-combine-versions-template' to STRING. | |
| 2473 | This value controls how `emerge-combine-versions' combines the two versions. | |
| 2474 | With prefix argument, `emerge-combine-versions-template' is made local to this | |
| 2475 | merge buffer. Localization is permanent for any particular merge buffer." | |
| 2476 | (interactive "s\nP") | |
| 2477 | (if localize | |
| 2478 | (make-local-variable 'emerge-combine-versions-template)) | |
| 2479 | (setq emerge-combine-versions-template string) | |
| 2480 | (message | |
| 2481 | (if (assq 'emerge-combine-versions-template (buffer-local-variables)) | |
| 2482 | "emerge-set-combine-versions-template set locally" | |
| 2483 | "emerge-set-combine-versions-template set"))) | |
| 2484 | ||
| 3b4a6e27 | 2485 | (defun emerge-set-combine-versions-template (start end &optional localize) |
| 737e3892 RS |
2486 | "Copy region into `emerge-combine-versions-template'. |
| 2487 | This controls how `emerge-combine-versions' will combine the two versions. | |
| ff5f6ddd | 2488 | With prefix argument, `emerge-combine-versions-template' is made local to this |
| 3b4a6e27 JB |
2489 | merge buffer. Localization is permanent for any particular merge buffer." |
| 2490 | (interactive "r\nP") | |
| 2491 | (if localize | |
| 2492 | (make-local-variable 'emerge-combine-versions-template)) | |
| 2493 | (setq emerge-combine-versions-template (buffer-substring start end)) | |
| 2494 | (message | |
| 2495 | (if (assq 'emerge-combine-versions-template (buffer-local-variables)) | |
| 2496 | "emerge-set-combine-versions-template set locally." | |
| 2497 | "emerge-set-combine-versions-template set."))) | |
| 2498 | ||
| 2499 | (defun emerge-combine-versions (&optional force) | |
| 737e3892 | 2500 | "Combine versions using the template in `emerge-combine-versions-template'. |
| 3b4a6e27 JB |
2501 | Refuses to function if this difference has been edited, i.e., if it is |
| 2502 | neither the A nor the B variant. | |
| 737e3892 | 2503 | An argument forces the variant to be selected even if the difference has |
| 3b4a6e27 JB |
2504 | been edited." |
| 2505 | (interactive "P") | |
| 2506 | (emerge-combine-versions-internal emerge-combine-versions-template force)) | |
| 2507 | ||
| 2508 | (defun emerge-combine-versions-register (char &optional force) | |
| 2509 | "Combine the two versions using the template in register REG. | |
| 737e3892 | 2510 | See documentation of the variable `emerge-combine-versions-template' |
| 3b4a6e27 JB |
2511 | for how the template is interpreted. |
| 2512 | Refuses to function if this difference has been edited, i.e., if it is | |
| 2513 | neither the A nor the B variant. | |
| 737e3892 | 2514 | An argument forces the variant to be selected even if the difference has |
| 3b4a6e27 JB |
2515 | been edited." |
| 2516 | (interactive "cRegister containing template: \nP") | |
| 2517 | (let ((template (get-register char))) | |
| 2518 | (if (not (stringp template)) | |
| 2519 | (error "Register does not contain text")) | |
| 2520 | (emerge-combine-versions-internal template force))) | |
| 2521 | ||
| 2522 | (defun emerge-combine-versions-internal (template force) | |
| 2523 | (let ((operate | |
| 2524 | (function (lambda () | |
| 2525 | (emerge-combine-versions-edit merge-begin merge-end | |
| 2526 | A-begin A-end B-begin B-end) | |
| 2527 | (if emerge-auto-advance | |
| 2528 | (emerge-next-difference)))))) | |
| 2529 | (emerge-select-version force operate operate operate))) | |
| 2530 | ||
| 2531 | (defun emerge-combine-versions-edit (merge-begin merge-end | |
| 2532 | A-begin A-end B-begin B-end) | |
| 2533 | (emerge-eval-in-buffer | |
| 2534 | emerge-merge-buffer | |
| 2535 | (delete-region merge-begin merge-end) | |
| 2536 | (goto-char merge-begin) | |
| 2537 | (let ((i 0)) | |
| 2538 | (while (< i (length template)) | |
| 2539 | (let ((c (aref template i))) | |
| 2540 | (if (= c ?%) | |
| 2541 | (progn | |
| 2542 | (setq i (1+ i)) | |
| 2543 | (setq c | |
| 2544 | (condition-case nil | |
| 2545 | (aref template i) | |
| 2546 | (error ?%))) | |
| 2547 | (cond ((= c ?a) | |
| 2548 | (insert-buffer-substring emerge-A-buffer A-begin A-end)) | |
| 2549 | ((= c ?b) | |
| 2550 | (insert-buffer-substring emerge-B-buffer B-begin B-end)) | |
| 2551 | ((= c ?%) | |
| 737e3892 RS |
2552 | (insert ?%)) |
| 2553 | (t | |
| 2554 | (insert c)))) | |
| 3b4a6e27 JB |
2555 | (insert c))) |
| 2556 | (setq i (1+ i)))) | |
| 2557 | (goto-char merge-begin) | |
| 2558 | (aset diff-vector 6 'combined) | |
| 2559 | (emerge-refresh-mode-line))) | |
| 2560 | ||
| 2561 | (defun emerge-set-merge-mode (mode) | |
| 737e3892 RS |
2562 | "Set the major mode in a merge buffer. |
| 2563 | Overrides any change that the mode might make to the mode line or local | |
| 2564 | keymap. Leaves merge in fast mode." | |
| 3b4a6e27 JB |
2565 | (interactive |
| 2566 | (list (intern (completing-read "New major mode for merge buffer: " | |
| 2567 | obarray 'commandp t nil)))) | |
| 2568 | (funcall mode) | |
| 2569 | (emerge-refresh-mode-line) | |
| 2570 | (if emerge-fast-mode | |
| 2571 | (emerge-fast-mode) | |
| 2572 | (emerge-edit-mode))) | |
| 2573 | ||
| 2574 | (defun emerge-one-line-window () | |
| 2575 | (interactive) | |
| 2576 | (let ((window-min-height 1)) | |
| 2577 | (shrink-window (- (window-height) 2)))) | |
| 2578 | ||
| 2579 | ;;; Support routines | |
| 2580 | ||
| 2581 | ;; Select a difference by placing the visual flags around the appropriate | |
| 2582 | ;; group of lines in the A, B, and merge buffers | |
| 2583 | (defun emerge-select-difference (n) | |
| 151e4b9c RS |
2584 | (let ((emerge-globalized-difference-list emerge-difference-list) |
| 2585 | (emerge-globalized-number-of-differences emerge-number-of-differences)) | |
| 2586 | (emerge-place-flags-in-buffer emerge-A-buffer n 0 1) | |
| 2587 | (emerge-place-flags-in-buffer emerge-B-buffer n 2 3) | |
| 2588 | (emerge-place-flags-in-buffer nil n 4 5)) | |
| 737e3892 | 2589 | (run-hooks 'emerge-select-hook)) |
| 151e4b9c RS |
2590 | |
| 2591 | (defun emerge-place-flags-in-buffer (buffer difference before-index | |
| 2592 | after-index) | |
| 2593 | (if buffer | |
| 2594 | (emerge-eval-in-buffer | |
| 2595 | buffer | |
| 2596 | (emerge-place-flags-in-buffer1 difference before-index after-index)) | |
| 2597 | (emerge-place-flags-in-buffer1 difference before-index after-index))) | |
| 2598 | ||
| 2599 | (defun emerge-place-flags-in-buffer1 (difference before-index after-index) | |
| 3b4a6e27 | 2600 | (let ((buffer-read-only nil)) |
| 151e4b9c RS |
2601 | ;; insert the flag before the difference |
| 2602 | (let ((before (aref (aref emerge-globalized-difference-list difference) | |
| 2603 | before-index)) | |
| 2604 | here) | |
| 2605 | (goto-char before) | |
| 2606 | ;; insert the flag itself | |
| 2607 | (insert-before-markers emerge-before-flag) | |
| 2608 | (setq here (point)) | |
| 2609 | ;; Put the marker(s) referring to this position 1 character before the | |
| 2610 | ;; end of the flag, so it won't be damaged by the user. | |
| 2611 | ;; This gets a bit tricky, as there could be a number of markers | |
| 2612 | ;; that have to be moved. | |
| 2613 | (set-marker before (1- before)) | |
| 2614 | (let ((n (1- difference)) after-marker before-marker diff-list) | |
| 2615 | (while (and | |
| 2616 | (>= n 0) | |
| 2617 | (progn | |
| 2618 | (setq diff-list (aref emerge-globalized-difference-list n) | |
| 2619 | after-marker (aref diff-list after-index)) | |
| 2620 | (= after-marker here))) | |
| 2621 | (set-marker after-marker (1- after-marker)) | |
| 2622 | (setq before-marker (aref diff-list before-index)) | |
| 2623 | (if (= before-marker here) | |
| 2624 | (setq before-marker (1- before-marker))) | |
| 2625 | (setq n (1- n))))) | |
| 2626 | ;; insert the flag after the difference | |
| 2627 | (let* ((after (aref (aref emerge-globalized-difference-list difference) | |
| 2628 | after-index)) | |
| 2629 | (here (marker-position after))) | |
| 2630 | (goto-char here) | |
| 2631 | ;; insert the flag itself | |
| 2632 | (insert emerge-after-flag) | |
| 2633 | ;; Put the marker(s) referring to this position 1 character after the | |
| 2634 | ;; beginning of the flag, so it won't be damaged by the user. | |
| 2635 | ;; This gets a bit tricky, as there could be a number of markers | |
| 2636 | ;; that have to be moved. | |
| 2637 | (set-marker after (1+ after)) | |
| 2638 | (let ((n (1+ difference)) before-marker after-marker diff-list) | |
| 2639 | (while (and | |
| 2640 | (< n emerge-globalized-number-of-differences) | |
| 2641 | (progn | |
| 2642 | (setq diff-list (aref emerge-globalized-difference-list n) | |
| 2643 | before-marker (aref diff-list before-index)) | |
| 2644 | (= before-marker here))) | |
| 2645 | (set-marker before-marker (1+ before-marker)) | |
| 2646 | (setq after-marker (aref diff-list after-index)) | |
| 2647 | (if (= after-marker here) | |
| 2648 | (setq after-marker (1+ after-marker))) | |
| 2649 | (setq n (1+ n))))))) | |
| 3b4a6e27 JB |
2650 | |
| 2651 | ;; Unselect a difference by removing the visual flags in the buffers. | |
| 2652 | (defun emerge-unselect-difference (n) | |
| 2653 | (let ((diff-vector (aref emerge-difference-list n))) | |
| 2654 | (emerge-remove-flags-in-buffer emerge-A-buffer | |
| 2655 | (aref diff-vector 0) (aref diff-vector 1)) | |
| 2656 | (emerge-remove-flags-in-buffer emerge-B-buffer | |
| 2657 | (aref diff-vector 2) (aref diff-vector 3)) | |
| 2658 | (emerge-remove-flags-in-buffer emerge-merge-buffer | |
| 151e4b9c | 2659 | (aref diff-vector 4) (aref diff-vector 5))) |
| 737e3892 | 2660 | (run-hooks 'emerge-unselect-hook)) |
| 3b4a6e27 JB |
2661 | |
| 2662 | (defun emerge-remove-flags-in-buffer (buffer before after) | |
| 2663 | (emerge-eval-in-buffer | |
| 2664 | buffer | |
| 2665 | (let ((buffer-read-only nil)) | |
| 151e4b9c RS |
2666 | ;; remove the flags, if they're there |
| 2667 | (goto-char (- before (1- emerge-before-flag-length))) | |
| 3b4a6e27 JB |
2668 | (if (looking-at emerge-before-flag-match) |
| 2669 | (delete-char emerge-before-flag-length) | |
| 2670 | ;; the flag isn't there | |
| 2671 | (ding) | |
| 737e3892 | 2672 | (message "Trouble removing flag")) |
| 151e4b9c | 2673 | (goto-char (1- after)) |
| 3b4a6e27 JB |
2674 | (if (looking-at emerge-after-flag-match) |
| 2675 | (delete-char emerge-after-flag-length) | |
| 2676 | ;; the flag isn't there | |
| 2677 | (ding) | |
| 737e3892 | 2678 | (message "Trouble removing flag"))))) |
| 3b4a6e27 | 2679 | |
| 151e4b9c | 2680 | ;; Select a difference, removing any flags that exist now. |
| 3b4a6e27 JB |
2681 | (defun emerge-unselect-and-select-difference (n &optional suppress-display) |
| 2682 | (if (and (>= emerge-current-difference 0) | |
| 2683 | (< emerge-current-difference emerge-number-of-differences)) | |
| 2684 | (emerge-unselect-difference emerge-current-difference)) | |
| 2685 | (if (and (>= n 0) (< n emerge-number-of-differences)) | |
| 2686 | (progn | |
| 2687 | (emerge-select-difference n) | |
| 2688 | (let* ((diff-vector (aref emerge-difference-list n)) | |
| 2689 | (selection-type (aref diff-vector 6))) | |
| 2690 | (if (eq selection-type 'default-A) | |
| 2691 | (aset diff-vector 6 'A) | |
| 2692 | (if (eq selection-type 'default-B) | |
| 2693 | (aset diff-vector 6 'B)))))) | |
| 2694 | (setq emerge-current-difference n) | |
| 2695 | (if (not suppress-display) | |
| 2696 | (progn | |
| 2697 | (emerge-recenter) | |
| 2698 | (emerge-refresh-mode-line)))) | |
| 2699 | ||
| 2700 | ;; Perform tests to see whether user should be allowed to select a version | |
| 2701 | ;; of this difference: | |
| 2702 | ;; a valid difference has been selected; and | |
| 2703 | ;; the difference text in the merge buffer is: | |
| 2704 | ;; the A version (execute a-version), or | |
| 2705 | ;; the B version (execute b-version), or | |
| 2706 | ;; empty (execute neither-version), or | |
| 2707 | ;; argument FORCE is true (execute neither-version) | |
| 2708 | ;; Otherwise, signal an error. | |
| 2709 | (defun emerge-select-version (force a-version b-version neither-version) | |
| 2710 | (emerge-validate-difference) | |
| 2711 | (let ((buffer-read-only nil)) | |
| 2712 | (let* ((diff-vector | |
| 2713 | (aref emerge-difference-list emerge-current-difference)) | |
| 2714 | (A-begin (1+ (aref diff-vector 0))) | |
| 2715 | (A-end (1- (aref diff-vector 1))) | |
| 2716 | (B-begin (1+ (aref diff-vector 2))) | |
| 2717 | (B-end (1- (aref diff-vector 3))) | |
| 2718 | (merge-begin (1+ (aref diff-vector 4))) | |
| 2719 | (merge-end (1- (aref diff-vector 5)))) | |
| 2720 | (if (emerge-compare-buffers emerge-A-buffer A-begin A-end | |
| 2721 | emerge-merge-buffer merge-begin | |
| 2722 | merge-end) | |
| 2723 | (funcall a-version) | |
| 2724 | (if (emerge-compare-buffers emerge-B-buffer B-begin B-end | |
| 2725 | emerge-merge-buffer merge-begin | |
| 2726 | merge-end) | |
| 2727 | (funcall b-version) | |
| 2728 | (if (or force (= merge-begin merge-end)) | |
| 2729 | (funcall neither-version) | |
| 151e4b9c RS |
2730 | (error "This difference region has been edited"))))))) |
| 2731 | ||
| 2732 | ;; Read a file name, handling all of the various defaulting rules. | |
| 2733 | ||
| 2734 | (defun emerge-read-file-name (prompt alternative-default-dir default-file | |
| 2735 | A-file) | |
| 737e3892 | 2736 | ;; `prompt' should not have trailing ": ", so that it can be modified |
| 151e4b9c RS |
2737 | ;; according to context. |
| 2738 | ;; If alternative-default-dir is non-nil, it should be used as the default | |
| 2739 | ;; directory instead if default-directory, if emerge-default-last-directories | |
| 2740 | ;; is set. | |
| 2741 | ;; If default-file is set, it should be used as the default value. | |
| 2742 | ;; If A-file is set, and its directory is different from | |
| 2743 | ;; alternative-default-dir, and if emerge-default-last-directories is set, | |
| 2744 | ;; the default file should be the last part of A-file in the default | |
| 2745 | ;; directory. (Overriding default-file.) | |
| 2746 | (cond | |
| 2747 | ;; If this is not the A-file argument (shown by non-nil A-file), and | |
| 2748 | ;; if emerge-default-last-directories is set, and | |
| 2749 | ;; the default directory exists but is not the same as the directory of the | |
| 2750 | ;; A-file, | |
| 2751 | ;; then make the default file have the same name as the A-file, but in | |
| 2752 | ;; the default directory. | |
| 2753 | ((and emerge-default-last-directories | |
| 2754 | A-file | |
| 2755 | alternative-default-dir | |
| 2756 | (not (string-equal alternative-default-dir | |
| 2757 | (file-name-directory A-file)))) | |
| 2758 | (read-file-name (format "%s (default %s): " | |
| 2759 | prompt (file-name-nondirectory A-file)) | |
| 2760 | alternative-default-dir | |
| 2761 | (concat alternative-default-dir | |
| 2762 | (file-name-nondirectory A-file)) | |
| 2763 | 'confirm)) | |
| 2764 | ;; If there is a default file, use it. | |
| 2765 | (default-file | |
| 2766 | (read-file-name (format "%s (default %s): " prompt default-file) | |
| 2767 | ;; If emerge-default-last-directories is set, use the | |
| 2768 | ;; directory from the same argument of the last call of | |
| 2769 | ;; Emerge as the default for this argument. | |
| 2770 | (and emerge-default-last-directories | |
| 2771 | alternative-default-dir) | |
| 2772 | default-file 'confirm)) | |
| 2773 | (t | |
| 2774 | (read-file-name (concat prompt ": ") | |
| 2775 | ;; If emerge-default-last-directories is set, use the | |
| 2776 | ;; directory from the same argument of the last call of | |
| 2777 | ;; Emerge as the default for this argument. | |
| 2778 | (and emerge-default-last-directories | |
| 2779 | alternative-default-dir) | |
| 2780 | nil 'confirm)))) | |
| 3b4a6e27 JB |
2781 | |
| 2782 | ;; Revise the mode line to display which difference we have selected | |
| 2783 | ||
| 2784 | (defun emerge-refresh-mode-line () | |
| 2785 | (setq mode-line-buffer-identification | |
| 2786 | (list (format "Emerge: %%b diff %d of %d%s" | |
| 2787 | (1+ emerge-current-difference) | |
| 2788 | emerge-number-of-differences | |
| 2789 | (if (and (>= emerge-current-difference 0) | |
| 2790 | (< emerge-current-difference | |
| 2791 | emerge-number-of-differences)) | |
| 2792 | (cdr (assq (aref (aref emerge-difference-list | |
| 2793 | emerge-current-difference) | |
| 2794 | 6) | |
| 2795 | '((A . " - A") | |
| 2796 | (B . " - B") | |
| 2797 | (prefer-A . " - A*") | |
| 2798 | (prefer-B . " - B*") | |
| 2799 | (combined . " - comb")))) | |
| 2800 | "")))) | |
| 2801 | ;; Force mode-line redisplay | |
| 2802 | (set-buffer-modified-p (buffer-modified-p))) | |
| 2803 | ||
| 2804 | ;; compare two regions in two buffers for containing the same text | |
| 2805 | (defun emerge-compare-buffers (buffer-x x-begin x-end buffer-y y-begin y-end) | |
| 2806 | ;; first check that the two regions are the same length | |
| 2807 | (if (not (and (= (- x-end x-begin) (- y-end y-begin)))) | |
| 2808 | nil | |
| 2809 | (catch 'exit | |
| 2810 | (while (< x-begin x-end) | |
| 2811 | ;; bite off and compare no more than 1000 characters at a time | |
| 2812 | (let* ((compare-length (min (- x-end x-begin) 1000)) | |
| 2813 | (x-string (emerge-eval-in-buffer | |
| 2814 | buffer-x | |
| 2815 | (buffer-substring x-begin | |
| 2816 | (+ x-begin compare-length)))) | |
| 2817 | (y-string (emerge-eval-in-buffer | |
| 2818 | buffer-y | |
| 2819 | (buffer-substring y-begin | |
| 2820 | (+ y-begin compare-length))))) | |
| 2821 | (if (not (string-equal x-string y-string)) | |
| 2822 | (throw 'exit nil) | |
| 2823 | (setq x-begin (+ x-begin compare-length)) | |
| 2824 | (setq y-begin (+ y-begin compare-length))))) | |
| 2825 | t))) | |
| 2826 | ||
| 2827 | ;; Construct a unique buffer name. | |
| 2828 | ;; The first one tried is prefixsuffix, then prefix<2>suffix, | |
| 2829 | ;; prefix<3>suffix, etc. | |
| 2830 | (defun emerge-unique-buffer-name (prefix suffix) | |
| 2831 | (if (null (get-buffer (concat prefix suffix))) | |
| 2832 | (concat prefix suffix) | |
| 2833 | (let ((n 2)) | |
| 2834 | (while (get-buffer (format "%s<%d>%s" prefix n suffix)) | |
| 2835 | (setq n (1+ n))) | |
| 2836 | (format "%s<%d>%s" prefix n suffix)))) | |
| 2837 | ||
| 2838 | ;; Verify that we have a difference selected. | |
| 2839 | (defun emerge-validate-difference () | |
| 2840 | (if (not (and (>= emerge-current-difference 0) | |
| 2841 | (< emerge-current-difference emerge-number-of-differences))) | |
| 2842 | (error "No difference selected"))) | |
| 2843 | ||
| 2844 | ;;; Functions for saving and restoring a batch of variables | |
| 2845 | ||
| 2846 | ;; These functions save (get the values of) and restore (set the values of) | |
| 2847 | ;; a list of variables. The argument is a list of symbols (the names of | |
| 2848 | ;; the variables). A list element can also be a list of two functions, | |
| 2849 | ;; the first of which (when called with no arguments) gets the value, and | |
| 2850 | ;; the second (when called with a value as an argment) sets the value. | |
| 2851 | ;; A "function" is anything that funcall can handle as an argument. | |
| 2852 | ||
| 2853 | (defun emerge-save-variables (vars) | |
| 2854 | (mapcar (function (lambda (v) (if (symbolp v) | |
| 2855 | (symbol-value v) | |
| 2856 | (funcall (car v))))) | |
| 2857 | vars)) | |
| 2858 | ||
| 2859 | (defun emerge-restore-variables (vars values) | |
| 2860 | (while vars | |
| 2861 | (let ((var (car vars)) | |
| 2862 | (value (car values))) | |
| 2863 | (if (symbolp var) | |
| 2864 | (set var value) | |
| 2865 | (funcall (car (cdr var)) value))) | |
| 2866 | (setq vars (cdr vars)) | |
| 2867 | (setq values (cdr values)))) | |
| 2868 | ||
| 2869 | ;; Make a temporary file that only we have access to. | |
| 2870 | ;; PREFIX is appended to emerge-temp-file-prefix to make the filename prefix. | |
| 2871 | (defun emerge-make-temp-file (prefix) | |
| 2872 | (let ((f (make-temp-name (concat emerge-temp-file-prefix prefix)))) | |
| 2873 | ;; create the file | |
| 2874 | (write-region (point-min) (point-min) f nil 'no-message) | |
| 2875 | (set-file-modes f emerge-temp-file-mode) | |
| 2876 | f)) | |
| 2877 | ||
| 2878 | ;;; Functions that query the user before he can write out the current buffer. | |
| 2879 | ||
| 2880 | (defun emerge-query-write-file () | |
| 737e3892 RS |
2881 | "Ask the user whether to write out an incomplete merge. |
| 2882 | If answer is yes, call `write-file' to do so. See `emerge-query-and-call' | |
| 3b4a6e27 JB |
2883 | for details of the querying process." |
| 2884 | (interactive) | |
| 2885 | (emerge-query-and-call 'write-file)) | |
| 2886 | ||
| 2887 | (defun emerge-query-save-buffer () | |
| 737e3892 RS |
2888 | "Ask the user whether to save an incomplete merge. |
| 2889 | If answer is yes, call `save-buffer' to do so. See `emerge-query-and-call' | |
| 3b4a6e27 JB |
2890 | for details of the querying process." |
| 2891 | (interactive) | |
| 2892 | (emerge-query-and-call 'save-buffer)) | |
| 2893 | ||
| 2894 | (defun emerge-query-and-call (command) | |
| 737e3892 RS |
2895 | "Ask the user whether to save or write out the incomplete merge. |
| 2896 | If answer is yes, call COMMAND interactively. During the call, the flags | |
| 3b4a6e27 JB |
2897 | around the current difference are removed." |
| 2898 | (if (yes-or-no-p "Do you really write to write out this unfinished merge? ") | |
| 2899 | ;; He really wants to do it -- unselect the difference for the duration | |
| 2900 | (progn | |
| 2901 | (if (and (>= emerge-current-difference 0) | |
| 2902 | (< emerge-current-difference emerge-number-of-differences)) | |
| 2903 | (emerge-unselect-difference emerge-current-difference)) | |
| 2904 | ;; call-interactively takes the value of current-prefix-arg as the | |
| 2905 | ;; prefix argument value to be passed to the command. Thus, we have | |
| 2906 | ;; to do nothing special to make sure the prefix argument is | |
| 2907 | ;; transmitted to the command. | |
| 2908 | (call-interactively command) | |
| 2909 | (if (and (>= emerge-current-difference 0) | |
| 2910 | (< emerge-current-difference emerge-number-of-differences)) | |
| 2911 | (progn | |
| 2912 | (emerge-select-difference emerge-current-difference) | |
| 2913 | (emerge-recenter)))) | |
| 2914 | ;; He's being smart and not doing it | |
| 2915 | (message "Not written"))) | |
| 2916 | ||
| 2917 | ;; Make sure the current buffer (for a file) has the same contents as the | |
| 2918 | ;; file on disk, and attempt to remedy the situation if not. | |
| 2919 | ;; Signal an error if we can't make them the same, or the user doesn't want | |
| 2920 | ;; to do what is necessary to make them the same. | |
| 2921 | (defun emerge-verify-file-buffer () | |
| 2922 | ;; First check if the file has been modified since the buffer visited it. | |
| 2923 | (if (verify-visited-file-modtime (current-buffer)) | |
| 2924 | (if (buffer-modified-p) | |
| 2925 | ;; If buffer is not obsolete and is modified, offer to save | |
| 2926 | (if (yes-or-no-p (format "Save file %s? " buffer-file-name)) | |
| 2927 | (save-buffer) | |
| 2928 | (error "Buffer out of sync for file %s" buffer-file-name)) | |
| 2929 | ;; If buffer is not obsolete and is not modified, do nothing | |
| 2930 | nil) | |
| 2931 | (if (buffer-modified-p) | |
| 2932 | ;; If buffer is obsolete and is modified, give error | |
| 2933 | (error "Buffer out of sync for file %s" buffer-file-name) | |
| 2934 | ;; If buffer is obsolete and is not modified, offer to revert | |
| 2935 | (if (yes-or-no-p (format "Revert file %s? " buffer-file-name)) | |
| 2936 | (revert-buffer t t) | |
| 2937 | (error "Buffer out of sync for file %s" buffer-file-name))))) | |
| 2938 | \f | |
| 2939 | ;; Utilities that might have value outside of Emerge. | |
| 2940 | ||
| 2941 | ;; Set up the mode in the current buffer to duplicate the mode in another | |
| 2942 | ;; buffer. | |
| 2943 | (defun emerge-copy-modes (buffer) | |
| 2944 | ;; Set the major mode | |
| 2945 | (funcall (emerge-eval-in-buffer buffer major-mode))) | |
| 2946 | ||
| 2947 | ;; Define a key, even if a prefix of it is defined | |
| 2948 | (defun emerge-force-define-key (keymap key definition) | |
| 737e3892 RS |
2949 | "Like `define-key', but forcibly creates prefix characters as needed. |
| 2950 | If some prefix of KEY has a non-prefix definition, it is redefined." | |
| 3b4a6e27 JB |
2951 | ;; Find out if a prefix of key is defined |
| 2952 | (let ((v (lookup-key keymap key))) | |
| 2953 | ;; If so, undefine it | |
| 2954 | (if (integerp v) | |
| 2955 | (define-key keymap (substring key 0 v) nil))) | |
| 2956 | ;; Now define the key | |
| 2957 | (define-key keymap key definition)) | |
| 2958 | ||
| 737e3892 RS |
2959 | ;;;;; Improvements to describe-mode, so that it describes minor modes as well |
| 2960 | ;;;;; as the major mode | |
| 2961 | ;;(defun describe-mode (&optional minor) | |
| 2962 | ;; "Display documentation of current major mode. | |
| 2963 | ;;If optional arg MINOR is non-nil (or prefix argument is given if interactive), | |
| 2964 | ;;display documentation of active minor modes as well. | |
| 2965 | ;;For this to work correctly for a minor mode, the mode's indicator variable | |
| 2966 | ;;\(listed in `minor-mode-alist') must also be a function whose documentation | |
| 2967 | ;;describes the minor mode." | |
| 2968 | ;; (interactive) | |
| 2969 | ;; (with-output-to-temp-buffer "*Help*" | |
| 2970 | ;; (princ mode-name) | |
| 2971 | ;; (princ " Mode:\n") | |
| 2972 | ;; (princ (documentation major-mode)) | |
| 2973 | ;; (let ((minor-modes minor-mode-alist) | |
| 2974 | ;; (locals (buffer-local-variables))) | |
| 2975 | ;; (while minor-modes | |
| 2976 | ;; (let* ((minor-mode (car (car minor-modes))) | |
| 2977 | ;; (indicator (car (cdr (car minor-modes)))) | |
| 2978 | ;; (local-binding (assq minor-mode locals))) | |
| 2979 | ;; ;; Document a minor mode if it is listed in minor-mode-alist, | |
| 2980 | ;; ;; bound locally in this buffer, non-nil, and has a function | |
| 2981 | ;; ;; definition. | |
| 2982 | ;; (if (and local-binding | |
| 2983 | ;; (cdr local-binding) | |
| 2984 | ;; (fboundp minor-mode)) | |
| 2985 | ;; (progn | |
| 2986 | ;; (princ (format "\n\n\n%s minor mode (indicator%s):\n" | |
| 2987 | ;; minor-mode indicator)) | |
| 2988 | ;; (princ (documentation minor-mode))))) | |
| 2989 | ;; (setq minor-modes (cdr minor-modes)))) | |
| 2990 | ;; (print-help-return-message))) | |
| 2991 | ||
| 2992 | ;; This goes with the redefinition of describe-mode. | |
| 2993 | ;;;; Adjust things so that keyboard macro definitions are documented correctly. | |
| 2994 | ;;(fset 'defining-kbd-macro (symbol-function 'start-kbd-macro)) | |
| 2995 | ||
| 2996 | ;; substitute-key-definition should work now. | |
| 2997 | ;;;; Function to shadow a definition in a keymap with definitions in another. | |
| 2998 | ;;(defun emerge-shadow-key-definition (olddef newdef keymap shadowmap) | |
| 2999 | ;; "Shadow OLDDEF with NEWDEF for any keys in KEYMAP with entries in SHADOWMAP. | |
| 3000 | ;;In other words, SHADOWMAP will now shadow all definitions of OLDDEF in KEYMAP | |
| 3001 | ;;with NEWDEF. Does not affect keys that are already defined in SHADOWMAP, | |
| 3002 | ;;including those whose definition is OLDDEF." | |
| 3003 | ;; ;; loop through all keymaps accessible from keymap | |
| 3004 | ;; (let ((maps (accessible-keymaps keymap))) | |
| 3005 | ;; (while maps | |
| 3006 | ;; (let ((prefix (car (car maps))) | |
| 3007 | ;; (map (cdr (car maps)))) | |
| 3008 | ;; ;; examine a keymap | |
| 3009 | ;; (if (arrayp map) | |
| 3010 | ;; ;; array keymap | |
| 3011 | ;; (let ((len (length map)) | |
| 3012 | ;; (i 0)) | |
| 3013 | ;; (while (< i len) | |
| 3014 | ;; (if (eq (aref map i) olddef) | |
| 3015 | ;; ;; set the shadowing definition | |
| 3016 | ;; (let ((key (concat prefix (char-to-string i)))) | |
| 3017 | ;; (emerge-define-key-if-possible shadowmap key newdef))) | |
| 3018 | ;; (setq i (1+ i)))) | |
| 3019 | ;; ;; sparse keymap | |
| 3020 | ;; (while map | |
| 3021 | ;; (if (eq (cdr-safe (car-safe map)) olddef) | |
| 3022 | ;; ;; set the shadowing definition | |
| 3023 | ;; (let ((key | |
| 3024 | ;; (concat prefix (char-to-string (car (car map)))))) | |
| 3025 | ;; (emerge-define-key-if-possible shadowmap key newdef))) | |
| 3026 | ;; (setq map (cdr map))))) | |
| 3027 | ;; (setq maps (cdr maps))))) | |
| 3b4a6e27 JB |
3028 | |
| 3029 | ;; Define a key if it (or a prefix) is not already defined in the map. | |
| 3030 | (defun emerge-define-key-if-possible (keymap key definition) | |
| 3031 | ;; look up the present definition of the key | |
| 3032 | (let ((present (lookup-key keymap key))) | |
| 3033 | (if (integerp present) | |
| 3034 | ;; if it is "too long", look up the valid prefix | |
| 3035 | (if (not (lookup-key keymap (substring key 0 present))) | |
| 3036 | ;; if the prefix isn't defined, define it | |
| 3037 | (define-key keymap key definition)) | |
| 3038 | ;; if there is no present definition, define it | |
| 3039 | (if (not present) | |
| 3040 | (define-key keymap key definition))))) | |
| 3041 | ||
| 737e3892 RS |
3042 | ;; Ordinary substitute-key-definition should do this now. |
| 3043 | ;;(defun emerge-recursively-substitute-key-definition (olddef newdef keymap) | |
| 3044 | ;; "Like `substitute-key-definition', but act recursively on subkeymaps. | |
| 3045 | ;;Make sure that subordinate keymaps aren't shared with other keymaps! | |
| 3046 | ;;\(`copy-keymap' will suffice.)" | |
| 3047 | ;; ;; Loop through all keymaps accessible from keymap | |
| 3048 | ;; (let ((maps (accessible-keymaps keymap))) | |
| 3049 | ;; (while maps | |
| 3050 | ;; ;; Substitute in this keymap | |
| 3051 | ;; (substitute-key-definition olddef newdef (cdr (car maps))) | |
| 3052 | ;; (setq maps (cdr maps))))) | |
| 3b4a6e27 JB |
3053 | |
| 3054 | ;; Show the name of the file in the buffer. | |
| 3055 | (defun emerge-show-file-name () | |
| 3056 | "Displays the name of the file loaded into the current buffer. | |
| 3057 | If the name won't fit on one line, the minibuffer is expanded to hold it, | |
| 3058 | and the command waits for a keystroke from the user. If the keystroke is | |
| 3059 | SPC, it is ignored; if it is anything else, it is processed as a command." | |
| 3060 | (interactive) | |
| 3061 | (let ((name (buffer-file-name))) | |
| 3062 | (or name | |
| 3063 | (setq name "Buffer has no file name.")) | |
| 3064 | (save-window-excursion | |
| 3065 | (select-window (minibuffer-window)) | |
| 3066 | (erase-buffer) | |
| 3067 | (insert name) | |
| 3068 | (if (not (pos-visible-in-window-p)) | |
| 3069 | (let ((echo-keystrokes 0)) | |
| 3070 | (while (and (not (pos-visible-in-window-p)) | |
| 151e4b9c | 3071 | (> (1- (screen-height)) (window-height))) |
| 3b4a6e27 | 3072 | (enlarge-window 1)) |
| 737e3892 RS |
3073 | (let ((c (read-event))) |
| 3074 | (if (not (eq c 32)) | |
| 3075 | (setq unread-command-events (list c))))))))) | |
| 3b4a6e27 JB |
3076 | |
| 3077 | ;; Improved auto-save file names. | |
| 3078 | ;; This function fixes many problems with the standard auto-save file names: | |
| 3079 | ;; Auto-save files for non-file buffers get put in the default directory | |
| 3080 | ;; for the buffer, whether that makes sense or not. | |
| 3081 | ;; Auto-save files for file buffers get put in the directory of the file, | |
| 3082 | ;; regardless of whether we can write into it or not. | |
| 3083 | ;; Auto-save files for non-file buffers don't use the process id, so if a | |
| 3084 | ;; user runs more than on Emacs, they can make auto-save files that overwrite | |
| 3085 | ;; each other. | |
| 3086 | ;; To use this function, do: | |
| 3087 | ;; (fset 'make-auto-save-file-name | |
| 3088 | ;; (symbol-function 'emerge-make-auto-save-file-name)) | |
| 3089 | (defun emerge-make-auto-save-file-name () | |
| 3090 | "Return file name to use for auto-saves of current buffer. | |
| 737e3892 RS |
3091 | Does not consider `auto-save-visited-file-name'; |
| 3092 | that is checked before calling this function. | |
| 3b4a6e27 | 3093 | You can redefine this for customization. |
| 737e3892 | 3094 | See also `auto-save-file-name-p'." |
| 3b4a6e27 JB |
3095 | (if buffer-file-name |
| 3096 | ;; if buffer has a file, try the format <file directory>/#<file name># | |
| 3097 | (let ((f (concat (file-name-directory buffer-file-name) | |
| 3098 | "#" | |
| 3099 | (file-name-nondirectory buffer-file-name) | |
| 3100 | "#"))) | |
| 3101 | (if (file-writable-p f) | |
| 3102 | ;; the file is writable, so use it | |
| 3103 | f | |
| 3104 | ;; the file isn't writable, so use the format | |
| 3105 | ;; ~/#&<file name>&<hash of directory># | |
| 3106 | (concat (getenv "HOME") | |
| 3107 | "/#&" | |
| 3108 | (file-name-nondirectory buffer-file-name) | |
| 3109 | "&" | |
| 737e3892 | 3110 | (emerge-hash-string-into-string |
| 3b4a6e27 JB |
3111 | (file-name-directory buffer-file-name)) |
| 3112 | "#"))) | |
| 3113 | ;; if buffer has no file, use the format ~/#%<buffer name>%<process id># | |
| 3114 | (expand-file-name (concat (getenv "HOME") | |
| 3115 | "/#%" | |
| 3116 | ;; quote / into \! and \ into \\ | |
| 737e3892 | 3117 | (emerge-unslashify-name (buffer-name)) |
| 3b4a6e27 JB |
3118 | "%" |
| 3119 | (make-temp-name "") | |
| 3120 | "#")))) | |
| 3121 | ||
| 3122 | ;; Hash a string into five characters more-or-less suitable for use in a file | |
| 3123 | ;; name. (Allowed characters are ! through ~, except /.) | |
| 737e3892 | 3124 | (defun emerge-hash-string-into-string (s) |
| 3b4a6e27 JB |
3125 | (let ((bins (vector 0 0 0 0 0)) |
| 3126 | (i 0)) | |
| 3127 | (while (< i (length s)) | |
| 3128 | (aset bins (% i 5) (% (+ (* (aref bins (% i 5)) 35) | |
| 3129 | (aref s i)) | |
| 3130 | 65536)) | |
| 3131 | (setq i (1+ i))) | |
| 3132 | (mapconcat (function (lambda (b) | |
| 3133 | (setq b (+ (% b 93) ?!)) | |
| 3134 | (if (>= b ?/) | |
| 3135 | (setq b (1+ b))) | |
| 3136 | (char-to-string b))) | |
| 3137 | bins ""))) | |
| 3138 | ||
| 3139 | ;; Quote any /s in a string by replacing them with \!. | |
| 3140 | ;; Also, replace any \s by \\, to make it one-to-one. | |
| 737e3892 | 3141 | (defun emerge-unslashify-name (s) |
| 3b4a6e27 JB |
3142 | (let ((limit 0)) |
| 3143 | (while (string-match "[/\\]" s limit) | |
| 3144 | (setq s (concat (substring s 0 (match-beginning 0)) | |
| 3145 | (if (string= (substring s (match-beginning 0) | |
| 3146 | (match-end 0)) | |
| 3147 | "/") | |
| 3148 | "\\!" | |
| 3149 | "\\\\") | |
| 3150 | (substring s (match-end 0)))) | |
| 3151 | (setq limit (1+ (match-end 0))))) | |
| 3152 | s) | |
| 3153 | ||
| 151e4b9c RS |
3154 | ;; Metacharacters that have to be protected from the shell when executing |
| 3155 | ;; a diff/diff3 command. | |
| 3156 | (defvar emerge-metachars "[ \t\n!\"#$&'()*;<=>?[\\^`{|~]" | |
| 737e3892 RS |
3157 | "Characters that must be quoted with \\ when used in a shell command line. |
| 3158 | More precisely, a [...] regexp to match any one such character.") | |
| 151e4b9c RS |
3159 | |
| 3160 | ;; Quote metacharacters (using \) when executing a diff/diff3 command. | |
| 3161 | (defun emerge-protect-metachars (s) | |
| 3162 | (let ((limit 0)) | |
| 3163 | (while (string-match emerge-metachars s limit) | |
| 3164 | (setq s (concat (substring s 0 (match-beginning 0)) | |
| 3165 | "\\" | |
| 3166 | (substring s (match-beginning 0)))) | |
| 3167 | (setq limit (1+ (match-end 0))))) | |
| 3168 | s) | |
| 3b4a6e27 | 3169 | |
| 737e3892 RS |
3170 | (provide 'emerge) |
| 3171 | ||
| 3172 | ;;; emerge.el ends here |