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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 | ||
c0932fbc | 5 | ;; Author: Dale R. Worley <worley@world.std.com> |
737e3892 RS |
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 | 30 | (define-key menu-bar-emerge-menu [emerge-merge-directories] |
a731bd48 | 31 | '("Merge Directories..." . emerge-merge-directories)) |
09113ea2 | 32 | ;;;###autoload |
125ed9df | 33 | (define-key menu-bar-emerge-menu [emerge-revisions-with-ancestor] |
a731bd48 | 34 | '("Revisions with Ancestor..." . emerge-revisions-with-ancestor)) |
9343c8ee | 35 | ;;;###autoload |
125ed9df | 36 | (define-key menu-bar-emerge-menu [emerge-revisions] |
a731bd48 | 37 | '("Revisions..." . emerge-revisions)) |
09113ea2 | 38 | ;;;###autoload |
125ed9df | 39 | (define-key menu-bar-emerge-menu [emerge-files-with-ancestor] |
a731bd48 | 40 | '("Files with Ancestor..." . emerge-files-with-ancestor)) |
09113ea2 | 41 | ;;;###autoload |
125ed9df | 42 | (define-key menu-bar-emerge-menu [emerge-files] |
a731bd48 | 43 | '("Files..." . emerge-files)) |
09113ea2 | 44 | ;;;###autoload |
125ed9df | 45 | (define-key menu-bar-emerge-menu [emerge-buffers-with-ancestor] |
a731bd48 | 46 | '("Buffers with Ancestor..." . emerge-buffers-with-ancestor)) |
09113ea2 | 47 | ;;;###autoload |
125ed9df | 48 | (define-key menu-bar-emerge-menu [emerge-buffers] |
a731bd48 | 49 | '("Buffers..." . emerge-buffers)) |
125ed9df | 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 | |
5d7d1333 MW |
254 | (let ((env (or (getenv "TMPDIR") |
255 | (getenv "TMP") | |
256 | (getenv "TEMP"))) | |
3b4a6e27 JB |
257 | d) |
258 | (setq d (if (and env (> (length env) 0)) | |
259 | env | |
260 | "/tmp")) | |
261 | (if (= (aref d (1- (length d))) ?/) | |
262 | (setq d (substring d 0 -1))) | |
263 | (concat d "/emerge")) | |
264 | "*Prefix to put on Emerge temporary file names. | |
737e3892 | 265 | Do not start with `~/' or `~user-name/'.") |
3b4a6e27 JB |
266 | |
267 | (defvar emerge-temp-file-mode 384 ; u=rw only | |
268 | "*Mode for Emerge temporary files.") | |
269 | ||
270 | (defvar emerge-combine-versions-template | |
504621b9 | 271 | "#ifdef NEW\n%b#else /* not NEW */\n%a#endif /* not NEW */\n" |
737e3892 | 272 | "*Template for `emerge-combine-versions' to combine the two versions. |
3b4a6e27 JB |
273 | The template is inserted as a string, with the following interpolations: |
274 | %a the A version of the difference | |
275 | %b the B version of the difference | |
737e3892 | 276 | %% the character `%' |
3b4a6e27 JB |
277 | Don't forget to end the template with a newline. |
278 | Note that this variable can be made local to a particular merge buffer by | |
661d3230 | 279 | giving a prefix argument to `emerge-set-combine-versions-template'.") |
3b4a6e27 JB |
280 | |
281 | ;; Build keymaps | |
282 | ||
283 | (defvar emerge-basic-keymap nil | |
284 | "Keymap of Emerge commands. | |
737e3892 RS |
285 | Directly available in `fast' mode; |
286 | must be prefixed by \\<emerge-fast-keymap>\\[emerge-basic-keymap] in `edit' mode.") | |
3b4a6e27 JB |
287 | |
288 | (defvar emerge-fast-keymap nil | |
737e3892 | 289 | "Local keymap used in Emerge `fast' mode. |
3b4a6e27 JB |
290 | Makes Emerge commands directly available.") |
291 | ||
ff5f6ddd RS |
292 | (defvar emerge-options-menu |
293 | (make-sparse-keymap "Options")) | |
294 | ||
295 | (defvar emerge-merge-menu | |
296 | (make-sparse-keymap "Merge")) | |
297 | ||
298 | (defvar emerge-move-menu | |
299 | (make-sparse-keymap "Move")) | |
300 | ||
737e3892 RS |
301 | (defvar emerge-command-prefix "\C-c\C-c" |
302 | "*Command prefix for Emerge commands in `edit' mode. | |
3b4a6e27 JB |
303 | Must be set before Emerge is loaded.") |
304 | ||
305 | ;; This function sets up the fixed keymaps. It is executed when the first | |
306 | ;; Emerge is done to allow the user maximum time to set up the global keymap. | |
307 | (defun emerge-setup-fixed-keymaps () | |
308 | ;; Set up the basic keymap | |
309 | (setq emerge-basic-keymap (make-keymap)) | |
310 | (suppress-keymap emerge-basic-keymap) ; this sets 0..9 to digit-argument and | |
311 | ; - to negative-argument | |
312 | (define-key emerge-basic-keymap "p" 'emerge-previous-difference) | |
313 | (define-key emerge-basic-keymap "n" 'emerge-next-difference) | |
314 | (define-key emerge-basic-keymap "a" 'emerge-select-A) | |
315 | (define-key emerge-basic-keymap "b" 'emerge-select-B) | |
316 | (define-key emerge-basic-keymap "j" 'emerge-jump-to-difference) | |
661d3230 | 317 | (define-key emerge-basic-keymap "." 'emerge-find-difference) |
3b4a6e27 | 318 | (define-key emerge-basic-keymap "q" 'emerge-quit) |
adca3f58 | 319 | (define-key emerge-basic-keymap "\C-]" 'emerge-abort) |
3b4a6e27 JB |
320 | (define-key emerge-basic-keymap "f" 'emerge-fast-mode) |
321 | (define-key emerge-basic-keymap "e" 'emerge-edit-mode) | |
322 | (define-key emerge-basic-keymap "s" nil) | |
323 | (define-key emerge-basic-keymap "sa" 'emerge-auto-advance) | |
324 | (define-key emerge-basic-keymap "ss" 'emerge-skip-prefers) | |
325 | (define-key emerge-basic-keymap "l" 'emerge-recenter) | |
326 | (define-key emerge-basic-keymap "d" nil) | |
327 | (define-key emerge-basic-keymap "da" 'emerge-default-A) | |
328 | (define-key emerge-basic-keymap "db" 'emerge-default-B) | |
329 | (define-key emerge-basic-keymap "c" nil) | |
330 | (define-key emerge-basic-keymap "ca" 'emerge-copy-as-kill-A) | |
331 | (define-key emerge-basic-keymap "cb" 'emerge-copy-as-kill-B) | |
332 | (define-key emerge-basic-keymap "i" nil) | |
333 | (define-key emerge-basic-keymap "ia" 'emerge-insert-A) | |
334 | (define-key emerge-basic-keymap "ib" 'emerge-insert-B) | |
335 | (define-key emerge-basic-keymap "m" 'emerge-mark-difference) | |
336 | (define-key emerge-basic-keymap "v" 'emerge-scroll-up) | |
337 | (define-key emerge-basic-keymap "^" 'emerge-scroll-down) | |
338 | (define-key emerge-basic-keymap "<" 'emerge-scroll-left) | |
339 | (define-key emerge-basic-keymap ">" 'emerge-scroll-right) | |
340 | (define-key emerge-basic-keymap "|" 'emerge-scroll-reset) | |
341 | (define-key emerge-basic-keymap "x" nil) | |
342 | (define-key emerge-basic-keymap "x1" 'emerge-one-line-window) | |
3b4a6e27 JB |
343 | (define-key emerge-basic-keymap "xc" 'emerge-combine-versions) |
344 | (define-key emerge-basic-keymap "xC" 'emerge-combine-versions-register) | |
3b4a6e27 JB |
345 | (define-key emerge-basic-keymap "xf" 'emerge-file-names) |
346 | (define-key emerge-basic-keymap "xj" 'emerge-join-differences) | |
347 | (define-key emerge-basic-keymap "xl" 'emerge-line-numbers) | |
348 | (define-key emerge-basic-keymap "xm" 'emerge-set-merge-mode) | |
349 | (define-key emerge-basic-keymap "xs" 'emerge-split-difference) | |
350 | (define-key emerge-basic-keymap "xt" 'emerge-trim-difference) | |
351 | (define-key emerge-basic-keymap "xx" 'emerge-set-combine-versions-template) | |
352 | ;; Allow emerge-basic-keymap to be referenced indirectly | |
353 | (fset 'emerge-basic-keymap emerge-basic-keymap) | |
354 | ;; Set up the fast mode keymap | |
355 | (setq emerge-fast-keymap (copy-keymap emerge-basic-keymap)) | |
356 | ;; Allow prefixed commands to work in fast mode | |
357 | (define-key emerge-fast-keymap emerge-command-prefix 'emerge-basic-keymap) | |
358 | ;; Allow emerge-fast-keymap to be referenced indirectly | |
359 | (fset 'emerge-fast-keymap emerge-fast-keymap) | |
360 | ;; Suppress write-file and save-buffer | |
737e3892 RS |
361 | (substitute-key-definition 'write-file 'emerge-query-write-file |
362 | emerge-fast-keymap (current-global-map)) | |
363 | (substitute-key-definition 'save-buffer 'emerge-query-save-buffer | |
ff5f6ddd RS |
364 | emerge-fast-keymap (current-global-map)) |
365 | ||
366 | (define-key emerge-basic-keymap [menu-bar] (make-sparse-keymap)) | |
367 | ||
368 | (define-key emerge-fast-keymap [menu-bar options] | |
369 | (cons "Options" emerge-options-menu)) | |
370 | (define-key emerge-fast-keymap [menu-bar merge] | |
371 | (cons "Merge" emerge-merge-menu)) | |
372 | (define-key emerge-fast-keymap [menu-bar move] | |
373 | (cons "Move" emerge-move-menu)) | |
374 | ||
375 | (define-key emerge-move-menu [emerge-scroll-reset] | |
376 | '("Scroll Reset" . emerge-scroll-reset)) | |
377 | (define-key emerge-move-menu [emerge-scroll-right] | |
378 | '("Scroll Right" . emerge-scroll-right)) | |
379 | (define-key emerge-move-menu [emerge-scroll-left] | |
380 | '("Scroll Left" . emerge-scroll-left)) | |
381 | (define-key emerge-move-menu [emerge-scroll-down] | |
382 | '("Scroll Down" . emerge-scroll-down)) | |
383 | (define-key emerge-move-menu [emerge-scroll-up] | |
384 | '("Scroll Up" . emerge-scroll-up)) | |
385 | (define-key emerge-move-menu [emerge-recenter] | |
386 | '("Recenter" . emerge-recenter)) | |
387 | (define-key emerge-move-menu [emerge-mark-difference] | |
388 | '("Mark Difference" . emerge-mark-difference)) | |
389 | (define-key emerge-move-menu [emerge-jump-to-difference] | |
390 | '("Jump To Difference" . emerge-jump-to-difference)) | |
391 | (define-key emerge-move-menu [emerge-find-difference] | |
392 | '("Find Difference" . emerge-find-difference)) | |
393 | (define-key emerge-move-menu [emerge-previous-difference] | |
394 | '("Previous Difference" . emerge-previous-difference)) | |
395 | (define-key emerge-move-menu [emerge-next-difference] | |
396 | '("Next Difference" . emerge-next-difference)) | |
397 | ||
398 | ||
399 | (define-key emerge-options-menu [emerge-one-line-window] | |
400 | '("One Line Window" . emerge-one-line-window)) | |
401 | (define-key emerge-options-menu [emerge-set-merge-mode] | |
402 | '("Set Merge Mode" . emerge-set-merge-mode)) | |
403 | (define-key emerge-options-menu [emerge-set-combine-template] | |
404 | '("Set Combine Template..." . emerge-set-combine-template)) | |
405 | (define-key emerge-options-menu [emerge-default-B] | |
406 | '("Default B" . emerge-default-B)) | |
407 | (define-key emerge-options-menu [emerge-default-A] | |
408 | '("Default A" . emerge-default-A)) | |
409 | (define-key emerge-options-menu [emerge-skip-prefers] | |
410 | '("Skip Prefers" . emerge-skip-prefers)) | |
411 | (define-key emerge-options-menu [emerge-auto-advance] | |
412 | '("Auto Advance" . emerge-auto-advance)) | |
413 | (define-key emerge-options-menu [emerge-edit-mode] | |
414 | '("Edit Mode" . emerge-edit-mode)) | |
415 | (define-key emerge-options-menu [emerge-fast-mode] | |
416 | '("Fast Mode" . emerge-fast-mode)) | |
417 | ||
418 | (define-key emerge-merge-menu [emerge-abort] '("Abort" . emerge-abort)) | |
419 | (define-key emerge-merge-menu [emerge-quit] '("Quit" . emerge-quit)) | |
420 | (define-key emerge-merge-menu [emerge-split-difference] | |
421 | '("Split Difference" . emerge-split-difference)) | |
422 | (define-key emerge-merge-menu [emerge-join-differences] | |
423 | '("Join Differences" . emerge-join-differences)) | |
424 | (define-key emerge-merge-menu [emerge-trim-difference] | |
425 | '("Trim Difference" . emerge-trim-difference)) | |
426 | (define-key emerge-merge-menu [emerge-combine-versions] | |
427 | '("Combine Versions" . emerge-combine-versions)) | |
428 | (define-key emerge-merge-menu [emerge-copy-as-kill-B] | |
429 | '("Copy B as Kill" . emerge-copy-as-kill-B)) | |
430 | (define-key emerge-merge-menu [emerge-copy-as-kill-A] | |
431 | '("Copy A as Kill" . emerge-copy-as-kill-A)) | |
432 | (define-key emerge-merge-menu [emerge-insert-B] | |
433 | '("Insert B" . emerge-insert-B)) | |
434 | (define-key emerge-merge-menu [emerge-insert-A] | |
435 | '("Insert A" . emerge-insert-A)) | |
436 | (define-key emerge-merge-menu [emerge-select-B] | |
437 | '("Select B" . emerge-select-B)) | |
438 | (define-key emerge-merge-menu [emerge-select-A] | |
439 | '("Select A" . emerge-select-A))) | |
440 | ||
3b4a6e27 JB |
441 | |
442 | ;; Variables which control each merge. They are local to the merge buffer. | |
443 | ||
444 | ;; Mode variables | |
445 | (emerge-defvar-local emerge-mode nil | |
446 | "Indicator for emerge-mode.") | |
447 | (emerge-defvar-local emerge-fast-mode nil | |
448 | "Indicator for emerge-mode fast submode.") | |
449 | (emerge-defvar-local emerge-edit-mode nil | |
450 | "Indicator for emerge-mode edit submode.") | |
451 | (emerge-defvar-local emerge-A-buffer nil | |
452 | "The buffer in which the A variant is stored.") | |
453 | (emerge-defvar-local emerge-B-buffer nil | |
454 | "The buffer in which the B variant is stored.") | |
455 | (emerge-defvar-local emerge-merge-buffer nil | |
456 | "The buffer in which the merged file is manipulated.") | |
457 | (emerge-defvar-local emerge-ancestor-buffer nil | |
458 | "The buffer in which the ancestor variant is stored, | |
459 | or nil if there is none.") | |
460 | ||
461 | (defconst emerge-saved-variables | |
462 | '((buffer-modified-p set-buffer-modified-p) | |
463 | buffer-read-only | |
464 | buffer-auto-save-file-name) | |
465 | "Variables and properties of a buffer which are saved, modified and restored | |
466 | during a merge.") | |
467 | (defconst emerge-merging-values '(nil t nil) | |
468 | "Values to be assigned to emerge-saved-variables during a merge.") | |
469 | ||
470 | (emerge-defvar-local emerge-A-buffer-values nil | |
471 | "Remembers emerge-saved-variables for emerge-A-buffer.") | |
472 | (emerge-defvar-local emerge-B-buffer-values nil | |
473 | "Remembers emerge-saved-variables for emerge-B-buffer.") | |
474 | ||
475 | (emerge-defvar-local emerge-difference-list nil | |
476 | "Vector of differences between the variants, and markers in the buffers to | |
477 | show where they are. Each difference is represented by a vector of seven | |
478 | elements. The first two are markers to the beginning and end of the difference | |
479 | section in the A buffer, the second two are markers for the B buffer, the third | |
480 | two are markers for the merge buffer, and the last element is the \"state\" of | |
481 | that difference in the merge buffer. | |
482 | A section of a buffer is described by two markers, one to the beginning of | |
483 | the first line of the section, and one to the beginning of the first line | |
484 | after the section. (If the section is empty, both markers point to the same | |
485 | point.) If the section is part of the selected difference, then the markers | |
486 | are moved into the flags, so the user can edit the section without disturbing | |
487 | the markers. | |
488 | The \"states\" are: | |
489 | A the merge buffer currently contains the A variant | |
490 | B the merge buffer currently contains the B variant | |
491 | default-A the merge buffer contains the A variant by default, | |
492 | but this difference hasn't been selected yet, so | |
493 | change-default commands can alter it | |
494 | default-B the merge buffer contains the B variant by default, | |
495 | but this difference hasn't been selected yet, so | |
496 | change-default commands can alter it | |
eb8c3be9 | 497 | prefer-A in a three-file merge, the A variant is the preferred |
3b4a6e27 | 498 | choice |
eb8c3be9 | 499 | prefer-B in a three-file merge, the B variant is the preferred |
3b4a6e27 JB |
500 | choice") |
501 | (emerge-defvar-local emerge-current-difference -1 | |
502 | "The difference that is currently selected.") | |
503 | (emerge-defvar-local emerge-number-of-differences nil | |
504 | "Number of differences found.") | |
505 | (emerge-defvar-local emerge-edit-keymap nil | |
506 | "The local keymap for the merge buffer, with the emerge commands defined in | |
507 | it. Used to save the local keymap during fast mode, when the local keymap is | |
508 | replaced by emerge-fast-keymap.") | |
509 | (emerge-defvar-local emerge-old-keymap nil | |
510 | "The original local keymap for the merge buffer.") | |
511 | (emerge-defvar-local emerge-auto-advance nil | |
512 | "*If non-nil, emerge-select-A and emerge-select-B automatically advance to | |
513 | the next difference.") | |
514 | (emerge-defvar-local emerge-skip-prefers nil | |
515 | "*If non-nil, differences for which there is a preference are automatically | |
516 | skipped.") | |
737e3892 | 517 | (emerge-defvar-local emerge-quit-hook nil |
3b4a6e27 | 518 | "Hooks to run in the merge buffer after the merge has been finished. |
737e3892 | 519 | `emerge-prefix-argument' will hold the prefix argument of the `emerge-quit' |
3b4a6e27 | 520 | command. |
737e3892 | 521 | This is *not* a user option, since Emerge uses it for its own processing.") |
3b4a6e27 | 522 | (emerge-defvar-local emerge-output-description nil |
737e3892 | 523 | "Describes output destination of emerge, for `emerge-file-names'.") |
3b4a6e27 JB |
524 | |
525 | ;;; Setup functions for two-file mode. | |
526 | ||
527 | (defun emerge-files-internal (file-A file-B &optional startup-hooks quit-hooks | |
528 | output-file) | |
151e4b9c | 529 | (if (not (file-readable-p file-A)) |
737e3892 | 530 | (error "File `%s' does not exist or is not readable" file-A)) |
151e4b9c | 531 | (if (not (file-readable-p file-B)) |
737e3892 | 532 | (error "File `%s' does not exist or is not readable" file-B)) |
3b4a6e27 JB |
533 | (let ((buffer-A (find-file-noselect file-A)) |
534 | (buffer-B (find-file-noselect file-B))) | |
151e4b9c RS |
535 | ;; Record the directories of the files |
536 | (setq emerge-last-dir-A (file-name-directory file-A)) | |
537 | (setq emerge-last-dir-B (file-name-directory file-B)) | |
538 | (if output-file | |
539 | (setq emerge-last-dir-output (file-name-directory output-file))) | |
3b4a6e27 | 540 | ;; Make sure the entire files are seen, and they reflect what is on disk |
151e4b9c RS |
541 | (emerge-eval-in-buffer |
542 | buffer-A | |
543 | (widen) | |
737e3892 RS |
544 | (let ((temp (file-local-copy file-A))) |
545 | (if temp | |
546 | (setq file-A temp | |
547 | startup-hooks | |
151e4b9c | 548 | (cons (` (lambda () (delete-file (, file-A)))) |
737e3892 RS |
549 | startup-hooks)) |
550 | ;; Verify that the file matches the buffer | |
551 | (emerge-verify-file-buffer)))) | |
151e4b9c RS |
552 | (emerge-eval-in-buffer |
553 | buffer-B | |
554 | (widen) | |
737e3892 RS |
555 | (let ((temp (file-local-copy file-B))) |
556 | (if temp | |
557 | (setq file-B temp | |
558 | startup-hooks | |
151e4b9c | 559 | (cons (` (lambda () (delete-file (, file-B)))) |
737e3892 RS |
560 | startup-hooks)) |
561 | ;; Verify that the file matches the buffer | |
562 | (emerge-verify-file-buffer)))) | |
3b4a6e27 JB |
563 | (emerge-setup buffer-A file-A buffer-B file-B startup-hooks quit-hooks |
564 | output-file))) | |
565 | ||
566 | ;; Start up Emerge on two files | |
567 | (defun emerge-setup (buffer-A file-A buffer-B file-B startup-hooks quit-hooks | |
568 | output-file) | |
569 | (setq file-A (expand-file-name file-A)) | |
570 | (setq file-B (expand-file-name file-B)) | |
571 | (setq output-file (and output-file (expand-file-name output-file))) | |
572 | (let* ((merge-buffer-name (emerge-unique-buffer-name "*merge" "*")) | |
573 | ;; create the merge buffer from buffer A, so it inherits buffer A's | |
574 | ;; default directory, etc. | |
575 | (merge-buffer (emerge-eval-in-buffer | |
576 | buffer-A | |
577 | (get-buffer-create merge-buffer-name)))) | |
578 | (emerge-eval-in-buffer | |
579 | merge-buffer | |
580 | (emerge-copy-modes buffer-A) | |
581 | (setq buffer-read-only nil) | |
582 | (auto-save-mode 1) | |
583 | (setq emerge-mode t) | |
584 | (setq emerge-A-buffer buffer-A) | |
585 | (setq emerge-B-buffer buffer-B) | |
586 | (setq emerge-ancestor-buffer nil) | |
587 | (setq emerge-merge-buffer merge-buffer) | |
588 | (setq emerge-output-description | |
589 | (if output-file | |
590 | (concat "Output to file: " output-file) | |
591 | (concat "Output to buffer: " (buffer-name merge-buffer)))) | |
592 | (insert-buffer emerge-A-buffer) | |
593 | (emerge-set-keys) | |
594 | (setq emerge-difference-list (emerge-make-diff-list file-A file-B)) | |
595 | (setq emerge-number-of-differences (length emerge-difference-list)) | |
596 | (setq emerge-current-difference -1) | |
737e3892 | 597 | (setq emerge-quit-hook quit-hooks) |
151e4b9c RS |
598 | (emerge-remember-buffer-characteristics) |
599 | (emerge-handle-local-variables)) | |
3b4a6e27 JB |
600 | (emerge-setup-windows buffer-A buffer-B merge-buffer t) |
601 | (emerge-eval-in-buffer merge-buffer | |
737e3892 | 602 | (run-hooks 'startup-hooks 'emerge-startup-hook) |
3b4a6e27 JB |
603 | (setq buffer-read-only t)))) |
604 | ||
605 | ;; Generate the Emerge difference list between two files | |
606 | (defun emerge-make-diff-list (file-A file-B) | |
607 | (setq emerge-diff-buffer (get-buffer-create "*emerge-diff*")) | |
608 | (emerge-eval-in-buffer | |
609 | emerge-diff-buffer | |
610 | (erase-buffer) | |
611 | (shell-command | |
612 | (format "%s %s %s %s" | |
151e4b9c RS |
613 | emerge-diff-program emerge-diff-options |
614 | (emerge-protect-metachars file-A) | |
615 | (emerge-protect-metachars file-B)) | |
3b4a6e27 | 616 | t)) |
661d3230 | 617 | (emerge-prepare-error-list emerge-diff-ok-lines-regexp) |
3b4a6e27 JB |
618 | (emerge-convert-diffs-to-markers |
619 | emerge-A-buffer emerge-B-buffer emerge-merge-buffer | |
620 | (emerge-extract-diffs emerge-diff-buffer))) | |
621 | ||
622 | (defun emerge-extract-diffs (diff-buffer) | |
623 | (let (list) | |
624 | (emerge-eval-in-buffer | |
625 | diff-buffer | |
626 | (goto-char (point-min)) | |
627 | (while (re-search-forward emerge-match-diff-line nil t) | |
628 | (let* ((a-begin (string-to-int (buffer-substring (match-beginning 1) | |
629 | (match-end 1)))) | |
630 | (a-end (let ((b (match-beginning 3)) | |
631 | (e (match-end 3))) | |
632 | (if b | |
633 | (string-to-int (buffer-substring b e)) | |
634 | a-begin))) | |
635 | (diff-type (buffer-substring (match-beginning 4) (match-end 4))) | |
636 | (b-begin (string-to-int (buffer-substring (match-beginning 5) | |
637 | (match-end 5)))) | |
638 | (b-end (let ((b (match-beginning 7)) | |
639 | (e (match-end 7))) | |
640 | (if b | |
641 | (string-to-int (buffer-substring b e)) | |
642 | b-begin)))) | |
643 | ;; fix the beginning and end numbers, because diff is somewhat | |
644 | ;; strange about how it numbers lines | |
645 | (if (string-equal diff-type "a") | |
646 | (progn | |
647 | (setq b-end (1+ b-end)) | |
648 | (setq a-begin (1+ a-begin)) | |
649 | (setq a-end a-begin)) | |
650 | (if (string-equal diff-type "d") | |
651 | (progn | |
652 | (setq a-end (1+ a-end)) | |
653 | (setq b-begin (1+ b-begin)) | |
654 | (setq b-end b-begin)) | |
655 | ;; (string-equal diff-type "c") | |
656 | (progn | |
657 | (setq a-end (1+ a-end)) | |
658 | (setq b-end (1+ b-end))))) | |
659 | (setq list (cons (vector a-begin a-end | |
660 | b-begin b-end | |
661 | 'default-A) | |
662 | list))))) | |
663 | (nreverse list))) | |
664 | ||
665 | ;; Set up buffer of diff/diff3 error messages. | |
666 | (defun emerge-prepare-error-list (ok-regexp) | |
667 | (setq emerge-diff-error-buffer (get-buffer-create "*emerge-diff-errors*")) | |
668 | (emerge-eval-in-buffer | |
669 | emerge-diff-error-buffer | |
670 | (erase-buffer) | |
671 | (insert-buffer emerge-diff-buffer) | |
672 | (delete-matching-lines ok-regexp))) | |
673 | ||
674 | ;;; Top-level and setup functions for three-file mode. | |
675 | ||
676 | (defun emerge-files-with-ancestor-internal (file-A file-B file-ancestor | |
737e3892 RS |
677 | &optional startup-hooks quit-hooks |
678 | output-file) | |
151e4b9c | 679 | (if (not (file-readable-p file-A)) |
737e3892 | 680 | (error "File `%s' does not exist or is not readable" file-A)) |
151e4b9c | 681 | (if (not (file-readable-p file-B)) |
737e3892 | 682 | (error "File `%s' does not exist or is not readable" file-B)) |
151e4b9c | 683 | (if (not (file-readable-p file-ancestor)) |
737e3892 | 684 | (error "File `%s' does not exist or is not readable" file-ancestor)) |
3b4a6e27 JB |
685 | (let ((buffer-A (find-file-noselect file-A)) |
686 | (buffer-B (find-file-noselect file-B)) | |
687 | (buffer-ancestor (find-file-noselect file-ancestor))) | |
151e4b9c RS |
688 | ;; Record the directories of the files |
689 | (setq emerge-last-dir-A (file-name-directory file-A)) | |
690 | (setq emerge-last-dir-B (file-name-directory file-B)) | |
691 | (setq emerge-last-dir-ancestor (file-name-directory file-ancestor)) | |
692 | (if output-file | |
693 | (setq emerge-last-dir-output (file-name-directory output-file))) | |
3b4a6e27 | 694 | ;; Make sure the entire files are seen, and they reflect what is on disk |
151e4b9c RS |
695 | (emerge-eval-in-buffer |
696 | buffer-A | |
697 | (widen) | |
737e3892 RS |
698 | (let ((temp (file-local-copy file-A))) |
699 | (if temp | |
700 | (setq file-A temp | |
701 | startup-hooks | |
151e4b9c | 702 | (cons (` (lambda () (delete-file (, file-A)))) |
737e3892 RS |
703 | startup-hooks)) |
704 | ;; Verify that the file matches the buffer | |
705 | (emerge-verify-file-buffer)))) | |
151e4b9c RS |
706 | (emerge-eval-in-buffer |
707 | buffer-B | |
708 | (widen) | |
737e3892 RS |
709 | (let ((temp (file-local-copy file-B))) |
710 | (if temp | |
711 | (setq file-B temp | |
712 | startup-hooks | |
151e4b9c | 713 | (cons (` (lambda () (delete-file (, file-B)))) |
737e3892 RS |
714 | startup-hooks)) |
715 | ;; Verify that the file matches the buffer | |
716 | (emerge-verify-file-buffer)))) | |
151e4b9c RS |
717 | (emerge-eval-in-buffer |
718 | buffer-ancestor | |
719 | (widen) | |
737e3892 RS |
720 | (let ((temp (file-local-copy file-ancestor))) |
721 | (if temp | |
722 | (setq file-ancestor temp | |
723 | startup-hooks | |
151e4b9c | 724 | (cons (` (lambda () (delete-file (, file-ancestor)))) |
737e3892 RS |
725 | startup-hooks)) |
726 | ;; Verify that the file matches the buffer | |
727 | (emerge-verify-file-buffer)))) | |
3b4a6e27 JB |
728 | (emerge-setup-with-ancestor buffer-A file-A buffer-B file-B |
729 | buffer-ancestor file-ancestor | |
730 | startup-hooks quit-hooks output-file))) | |
731 | ||
732 | ;; Start up Emerge on two files with an ancestor | |
733 | (defun emerge-setup-with-ancestor (buffer-A file-A buffer-B file-B | |
734 | buffer-ancestor file-ancestor | |
735 | &optional startup-hooks quit-hooks | |
736 | output-file) | |
737 | (setq file-A (expand-file-name file-A)) | |
738 | (setq file-B (expand-file-name file-B)) | |
739 | (setq file-ancestor (expand-file-name file-ancestor)) | |
740 | (setq output-file (and output-file (expand-file-name output-file))) | |
741 | (let* ((merge-buffer-name (emerge-unique-buffer-name "*merge" "*")) | |
742 | ;; create the merge buffer from buffer A, so it inherits buffer A's | |
743 | ;; default directory, etc. | |
744 | (merge-buffer (emerge-eval-in-buffer | |
745 | buffer-A | |
746 | (get-buffer-create merge-buffer-name)))) | |
747 | (emerge-eval-in-buffer | |
748 | merge-buffer | |
749 | (emerge-copy-modes buffer-A) | |
750 | (setq buffer-read-only nil) | |
751 | (auto-save-mode 1) | |
752 | (setq emerge-mode t) | |
753 | (setq emerge-A-buffer buffer-A) | |
754 | (setq emerge-B-buffer buffer-B) | |
755 | (setq emerge-ancestor-buffer buffer-ancestor) | |
756 | (setq emerge-merge-buffer merge-buffer) | |
757 | (setq emerge-output-description | |
758 | (if output-file | |
759 | (concat "Output to file: " output-file) | |
760 | (concat "Output to buffer: " (buffer-name merge-buffer)))) | |
761 | (insert-buffer emerge-A-buffer) | |
762 | (emerge-set-keys) | |
763 | (setq emerge-difference-list | |
764 | (emerge-make-diff3-list file-A file-B file-ancestor)) | |
765 | (setq emerge-number-of-differences (length emerge-difference-list)) | |
766 | (setq emerge-current-difference -1) | |
737e3892 | 767 | (setq emerge-quit-hook quit-hooks) |
3b4a6e27 | 768 | (emerge-remember-buffer-characteristics) |
151e4b9c RS |
769 | (emerge-select-prefer-Bs) |
770 | (emerge-handle-local-variables)) | |
3b4a6e27 JB |
771 | (emerge-setup-windows buffer-A buffer-B merge-buffer t) |
772 | (emerge-eval-in-buffer merge-buffer | |
737e3892 | 773 | (run-hooks 'startup-hooks 'emerge-startup-hook) |
3b4a6e27 JB |
774 | (setq buffer-read-only t)))) |
775 | ||
776 | ;; Generate the Emerge difference list between two files with an ancestor | |
777 | (defun emerge-make-diff3-list (file-A file-B file-ancestor) | |
778 | (setq emerge-diff-buffer (get-buffer-create "*emerge-diff*")) | |
779 | (emerge-eval-in-buffer | |
780 | emerge-diff-buffer | |
781 | (erase-buffer) | |
782 | (shell-command | |
783 | (format "%s %s %s %s %s" | |
784 | emerge-diff3-program emerge-diff-options | |
151e4b9c | 785 | (emerge-protect-metachars file-A) |
4a6e3980 | 786 | (emerge-protect-metachars file-ancestor) |
151e4b9c | 787 | (emerge-protect-metachars file-B)) |
3b4a6e27 | 788 | t)) |
661d3230 | 789 | (emerge-prepare-error-list emerge-diff3-ok-lines-regexp) |
3b4a6e27 JB |
790 | (emerge-convert-diffs-to-markers |
791 | emerge-A-buffer emerge-B-buffer emerge-merge-buffer | |
792 | (emerge-extract-diffs3 emerge-diff-buffer))) | |
793 | ||
794 | (defun emerge-extract-diffs3 (diff-buffer) | |
795 | (let (list) | |
796 | (emerge-eval-in-buffer | |
797 | diff-buffer | |
798 | (while (re-search-forward "^====\\(.?\\)$" nil t) | |
799 | ;; leave point after matched line | |
800 | (beginning-of-line 2) | |
801 | (let ((agreement (buffer-substring (match-beginning 1) (match-end 1)))) | |
802 | ;; if the A and B files are the same, ignore the difference | |
4a6e3980 | 803 | (if (not (string-equal agreement "2")) |
3b4a6e27 JB |
804 | (setq list |
805 | (cons | |
4a6e3980 | 806 | (let (group-1 group-3 pos) |
737e3892 | 807 | (setq pos (point)) |
4a6e3980 | 808 | (setq group-1 (emerge-get-diff3-group "1")) |
737e3892 RS |
809 | (goto-char pos) |
810 | (setq group-3 (emerge-get-diff3-group "3")) | |
4a6e3980 | 811 | (vector (car group-1) (car (cdr group-1)) |
3b4a6e27 | 812 | (car group-3) (car (cdr group-3)) |
4a6e3980 | 813 | (cond ((string-equal agreement "1") 'prefer-A) |
3b4a6e27 JB |
814 | ((string-equal agreement "3") 'prefer-B) |
815 | (t 'default-A)))) | |
816 | list)))))) | |
817 | (nreverse list))) | |
818 | ||
819 | (defun emerge-get-diff3-group (file) | |
820 | ;; This save-excursion allows emerge-get-diff3-group to be called for the | |
821 | ;; various groups of lines (1, 2, 3) in any order, and for the lines to | |
822 | ;; appear in any order. The reason this is necessary is that Gnu diff3 | |
823 | ;; can produce the groups in the order 1, 2, 3 or 1, 3, 2. | |
824 | (save-excursion | |
825 | (re-search-forward | |
826 | (concat "^" file ":\\([0-9]+\\)\\(,\\([0-9]+\\)\\)?\\([ac]\\)$")) | |
827 | (beginning-of-line 2) | |
828 | ;; treatment depends on whether it is an "a" group or a "c" group | |
829 | (if (string-equal (buffer-substring (match-beginning 4) (match-end 4)) "c") | |
830 | ;; it is a "c" group | |
831 | (if (match-beginning 2) | |
832 | ;; it has two numbers | |
833 | (list (string-to-int | |
834 | (buffer-substring (match-beginning 1) (match-end 1))) | |
835 | (1+ (string-to-int | |
836 | (buffer-substring (match-beginning 3) (match-end 3))))) | |
837 | ;; it has one number | |
838 | (let ((x (string-to-int | |
839 | (buffer-substring (match-beginning 1) (match-end 1))))) | |
840 | (list x (1+ x)))) | |
841 | ;; it is an "a" group | |
842 | (let ((x (1+ (string-to-int | |
843 | (buffer-substring (match-beginning 1) (match-end 1)))))) | |
844 | (list x x))))) | |
845 | ||
846 | ;;; Functions to start Emerge on files | |
847 | ||
737e3892 | 848 | ;;;###autoload |
3b4a6e27 JB |
849 | (defun emerge-files (arg file-A file-B file-out &optional startup-hooks |
850 | quit-hooks) | |
851 | "Run Emerge on two files." | |
852 | (interactive | |
853 | (let (f) | |
854 | (list current-prefix-arg | |
151e4b9c | 855 | (setq f (emerge-read-file-name "File A to merge" emerge-last-dir-A |
90371ec9 RS |
856 | nil nil t)) |
857 | (emerge-read-file-name "File B to merge" emerge-last-dir-B nil f t) | |
3b4a6e27 | 858 | (and current-prefix-arg |
151e4b9c | 859 | (emerge-read-file-name "Output file" emerge-last-dir-output |
90371ec9 | 860 | f f nil))))) |
3b4a6e27 JB |
861 | (emerge-files-internal |
862 | file-A file-B startup-hooks | |
737e3892 | 863 | (if file-out |
3b4a6e27 JB |
864 | (cons (` (lambda () (emerge-files-exit (, file-out)))) |
865 | quit-hooks) | |
866 | quit-hooks) | |
867 | file-out)) | |
868 | ||
737e3892 | 869 | ;;;###autoload |
3b4a6e27 JB |
870 | (defun emerge-files-with-ancestor (arg file-A file-B file-ancestor file-out |
871 | &optional startup-hooks quit-hooks) | |
872 | "Run Emerge on two files, giving another file as the ancestor." | |
873 | (interactive | |
874 | (let (f) | |
875 | (list current-prefix-arg | |
151e4b9c | 876 | (setq f (emerge-read-file-name "File A to merge" emerge-last-dir-A |
90371ec9 RS |
877 | nil nil t)) |
878 | (emerge-read-file-name "File B to merge" emerge-last-dir-B nil f t) | |
151e4b9c | 879 | (emerge-read-file-name "Ancestor file" emerge-last-dir-ancestor |
90371ec9 | 880 | nil f t) |
3b4a6e27 | 881 | (and current-prefix-arg |
151e4b9c | 882 | (emerge-read-file-name "Output file" emerge-last-dir-output |
90371ec9 | 883 | f f nil))))) |
3b4a6e27 JB |
884 | (emerge-files-with-ancestor-internal |
885 | file-A file-B file-ancestor startup-hooks | |
737e3892 | 886 | (if file-out |
3b4a6e27 JB |
887 | (cons (` (lambda () (emerge-files-exit (, file-out)))) |
888 | quit-hooks) | |
889 | quit-hooks) | |
890 | file-out)) | |
891 | ||
892 | ;; Write the merge buffer out in place of the file the A buffer is visiting. | |
893 | (defun emerge-files-exit (file-out) | |
894 | ;; if merge was successful was given, save to disk | |
895 | (if (not emerge-prefix-argument) | |
896 | (emerge-write-and-delete file-out))) | |
897 | ||
898 | ;;; Functions to start Emerge on buffers | |
899 | ||
737e3892 | 900 | ;;;###autoload |
3b4a6e27 JB |
901 | (defun emerge-buffers (buffer-A buffer-B &optional startup-hooks quit-hooks) |
902 | "Run Emerge on two buffers." | |
903 | (interactive "bBuffer A to merge: \nbBuffer B to merge: ") | |
904 | (let ((emerge-file-A (emerge-make-temp-file "A")) | |
905 | (emerge-file-B (emerge-make-temp-file "B"))) | |
906 | (emerge-eval-in-buffer | |
907 | buffer-A | |
908 | (write-region (point-min) (point-max) emerge-file-A nil 'no-message)) | |
909 | (emerge-eval-in-buffer | |
910 | buffer-B | |
911 | (write-region (point-min) (point-max) emerge-file-B nil 'no-message)) | |
912 | (emerge-setup (get-buffer buffer-A) emerge-file-A | |
913 | (get-buffer buffer-B) emerge-file-B | |
151e4b9c RS |
914 | (cons (` (lambda () |
915 | (delete-file (, emerge-file-A)) | |
916 | (delete-file (, emerge-file-B)))) | |
3b4a6e27 JB |
917 | startup-hooks) |
918 | quit-hooks | |
919 | nil))) | |
920 | ||
737e3892 | 921 | ;;;###autoload |
3b4a6e27 JB |
922 | (defun emerge-buffers-with-ancestor (buffer-A buffer-B buffer-ancestor |
923 | &optional startup-hooks | |
924 | quit-hooks) | |
925 | "Run Emerge on two buffers, giving another buffer as the ancestor." | |
926 | (interactive | |
927 | "bBuffer A to merge: \nbBuffer B to merge: \nbAncestor buffer: ") | |
928 | (let ((emerge-file-A (emerge-make-temp-file "A")) | |
929 | (emerge-file-B (emerge-make-temp-file "B")) | |
930 | (emerge-file-ancestor (emerge-make-temp-file "anc"))) | |
931 | (emerge-eval-in-buffer | |
932 | buffer-A | |
933 | (write-region (point-min) (point-max) emerge-file-A nil 'no-message)) | |
934 | (emerge-eval-in-buffer | |
935 | buffer-B | |
936 | (write-region (point-min) (point-max) emerge-file-B nil 'no-message)) | |
937 | (emerge-eval-in-buffer | |
938 | buffer-ancestor | |
939 | (write-region (point-min) (point-max) emerge-file-ancestor nil | |
940 | 'no-message)) | |
941 | (emerge-setup-with-ancestor (get-buffer buffer-A) emerge-file-A | |
942 | (get-buffer buffer-B) emerge-file-B | |
943 | (get-buffer buffer-ancestor) | |
944 | emerge-file-ancestor | |
151e4b9c RS |
945 | (cons (` (lambda () |
946 | (delete-file (, emerge-file-A)) | |
947 | (delete-file (, emerge-file-B)) | |
948 | (delete-file | |
949 | (, emerge-file-ancestor)))) | |
3b4a6e27 JB |
950 | startup-hooks) |
951 | quit-hooks | |
952 | nil))) | |
953 | ||
954 | ;;; Functions to start Emerge from the command line | |
955 | ||
737e3892 | 956 | ;;;###autoload |
3b4a6e27 JB |
957 | (defun emerge-files-command () |
958 | (let ((file-a (nth 0 command-line-args-left)) | |
959 | (file-b (nth 1 command-line-args-left)) | |
960 | (file-out (nth 2 command-line-args-left))) | |
961 | (setq command-line-args-left (nthcdr 3 command-line-args-left)) | |
962 | (emerge-files-internal | |
963 | file-a file-b nil | |
964 | (list (` (lambda () (emerge-command-exit (, file-out)))))))) | |
965 | ||
737e3892 | 966 | ;;;###autoload |
3b4a6e27 JB |
967 | (defun emerge-files-with-ancestor-command () |
968 | (let (file-a file-b file-anc file-out) | |
969 | ;; check for a -a flag, for filemerge compatibility | |
970 | (if (string= (car command-line-args-left) "-a") | |
971 | ;; arguments are "-a ancestor file-a file-b file-out" | |
972 | (progn | |
973 | (setq file-a (nth 2 command-line-args-left)) | |
974 | (setq file-b (nth 3 command-line-args-left)) | |
975 | (setq file-anc (nth 1 command-line-args-left)) | |
976 | (setq file-out (nth 4 command-line-args-left)) | |
977 | (setq command-line-args-left (nthcdr 5 command-line-args-left))) | |
978 | ;; arguments are "file-a file-b ancestor file-out" | |
979 | (setq file-a (nth 0 command-line-args-left)) | |
980 | (setq file-b (nth 1 command-line-args-left)) | |
981 | (setq file-anc (nth 2 command-line-args-left)) | |
982 | (setq file-out (nth 3 command-line-args-left)) | |
983 | (setq command-line-args-left (nthcdr 4 command-line-args-left))) | |
984 | (emerge-files-with-ancestor-internal | |
985 | file-a file-b file-anc nil | |
986 | (list (` (lambda () (emerge-command-exit (, file-out)))))))) | |
987 | ||
988 | (defun emerge-command-exit (file-out) | |
989 | (emerge-write-and-delete file-out) | |
990 | (kill-emacs (if emerge-prefix-argument 1 0))) | |
991 | ||
992 | ;;; Functions to start Emerge via remote request | |
993 | ||
737e3892 | 994 | ;;;###autoload |
3b4a6e27 JB |
995 | (defun emerge-files-remote (file-a file-b file-out) |
996 | (setq emerge-file-out file-out) | |
997 | (emerge-files-internal | |
998 | file-a file-b nil | |
ff5f6ddd | 999 | (list (` (lambda () (emerge-remote-exit (, file-out) '(, emerge-exit-func))))) |
3b4a6e27 JB |
1000 | file-out) |
1001 | (throw 'client-wait nil)) | |
1002 | ||
737e3892 | 1003 | ;;;###autoload |
3b4a6e27 JB |
1004 | (defun emerge-files-with-ancestor-remote (file-a file-b file-anc file-out) |
1005 | (setq emerge-file-out file-out) | |
1006 | (emerge-files-with-ancestor-internal | |
1007 | file-a file-b file-anc nil | |
ff5f6ddd | 1008 | (list (` (lambda () (emerge-remote-exit (, file-out) '(, emerge-exit-func))))) |
3b4a6e27 JB |
1009 | file-out) |
1010 | (throw 'client-wait nil)) | |
1011 | ||
ff5f6ddd | 1012 | (defun emerge-remote-exit (file-out emerge-exit-func) |
3b4a6e27 JB |
1013 | (emerge-write-and-delete file-out) |
1014 | (kill-buffer emerge-merge-buffer) | |
ff5f6ddd | 1015 | (funcall emerge-exit-func (if emerge-prefix-argument 1 0))) |
3b4a6e27 | 1016 | |
151e4b9c RS |
1017 | ;;; Functions to start Emerge on RCS versions |
1018 | ||
9343c8ee | 1019 | ;;;###autoload |
151e4b9c RS |
1020 | (defun emerge-revisions (arg file revision-A revision-B |
1021 | &optional startup-hooks quit-hooks) | |
1022 | "Emerge two RCS revisions of a file." | |
1023 | (interactive | |
1024 | (list current-prefix-arg | |
1025 | (read-file-name "File to merge: " nil nil 'confirm) | |
1026 | (read-string "Revision A to merge: " emerge-last-revision-A) | |
1027 | (read-string "Revision B to merge: " emerge-last-revision-B))) | |
1028 | (setq emerge-last-revision-A revision-A | |
1029 | emerge-last-revision-B revision-B) | |
1030 | (emerge-revisions-internal | |
1031 | file revision-A revision-B startup-hooks | |
1032 | (if arg | |
1033 | (cons (` (lambda () | |
1034 | (shell-command | |
1035 | (, (format "%s %s" emerge-rcs-ci-program file))))) | |
1036 | quit-hooks) | |
1037 | quit-hooks))) | |
1038 | ||
9343c8ee | 1039 | ;;;###autoload |
151e4b9c RS |
1040 | (defun emerge-revisions-with-ancestor (arg file revision-A |
1041 | revision-B ancestor | |
1042 | &optional | |
1043 | startup-hooks quit-hooks) | |
737e3892 | 1044 | "Emerge two RCS revisions of a file, with another revision as ancestor." |
151e4b9c RS |
1045 | (interactive |
1046 | (list current-prefix-arg | |
1047 | (read-file-name "File to merge: " nil nil 'confirm) | |
1048 | (read-string "Revision A to merge: " emerge-last-revision-A) | |
1049 | (read-string "Revision B to merge: " emerge-last-revision-B) | |
1050 | (read-string "Ancestor: " emerge-last-revision-ancestor))) | |
1051 | (setq emerge-last-revision-A revision-A | |
1052 | emerge-last-revision-B revision-B | |
1053 | emerge-last-revision-ancestor ancestor) | |
1054 | (emerge-revision-with-ancestor-internal | |
1055 | file revision-A revision-B ancestor startup-hooks | |
1056 | (if arg | |
1057 | (let ((cmd )) | |
1058 | (cons (` (lambda () | |
1059 | (shell-command | |
1060 | (, (format "%s %s" emerge-rcs-ci-program file))))) | |
1061 | quit-hooks)) | |
1062 | quit-hooks))) | |
1063 | ||
1064 | (defun emerge-revisions-internal (file revision-A revision-B &optional | |
1065 | startup-hooks quit-hooks output-file) | |
1066 | (let ((buffer-A (get-buffer-create (format "%s,%s" file revision-A))) | |
1067 | (buffer-B (get-buffer-create (format "%s,%s" file revision-B))) | |
1068 | (emerge-file-A (emerge-make-temp-file "A")) | |
1069 | (emerge-file-B (emerge-make-temp-file "B"))) | |
1070 | ;; Get the revisions into buffers | |
1071 | (emerge-eval-in-buffer | |
1072 | buffer-A | |
1073 | (erase-buffer) | |
1074 | (shell-command | |
1075 | (format "%s -q -p%s %s" emerge-rcs-co-program revision-A file) | |
1076 | t) | |
1077 | (write-region (point-min) (point-max) emerge-file-A nil 'no-message) | |
1078 | (set-buffer-modified-p nil)) | |
1079 | (emerge-eval-in-buffer | |
1080 | buffer-B | |
1081 | (erase-buffer) | |
1082 | (shell-command | |
1083 | (format "%s -q -p%s %s" emerge-rcs-co-program revision-B file) | |
1084 | t) | |
1085 | (write-region (point-min) (point-max) emerge-file-B nil 'no-message) | |
1086 | (set-buffer-modified-p nil)) | |
1087 | ;; Do the merge | |
1088 | (emerge-setup buffer-A emerge-file-A | |
1089 | buffer-B emerge-file-B | |
1090 | (cons (` (lambda () | |
1091 | (delete-file (, emerge-file-A)) | |
1092 | (delete-file (, emerge-file-B)))) | |
1093 | startup-hooks) | |
1094 | (cons (` (lambda () (emerge-files-exit (, file)))) | |
1095 | quit-hooks) | |
1096 | nil))) | |
1097 | ||
1098 | (defun emerge-revision-with-ancestor-internal (file revision-A revision-B | |
1099 | ancestor | |
1100 | &optional startup-hooks | |
1101 | quit-hooks output-file) | |
1102 | (let ((buffer-A (get-buffer-create (format "%s,%s" file revision-A))) | |
1103 | (buffer-B (get-buffer-create (format "%s,%s" file revision-B))) | |
1104 | (buffer-ancestor (get-buffer-create (format "%s,%s" file ancestor))) | |
1105 | (emerge-file-A (emerge-make-temp-file "A")) | |
1106 | (emerge-file-B (emerge-make-temp-file "B")) | |
1107 | (emerge-ancestor (emerge-make-temp-file "ancestor"))) | |
1108 | ;; Get the revisions into buffers | |
1109 | (emerge-eval-in-buffer | |
1110 | buffer-A | |
1111 | (erase-buffer) | |
1112 | (shell-command | |
1113 | (format "%s -q -p%s %s" emerge-rcs-co-program | |
1114 | revision-A file) | |
1115 | t) | |
1116 | (write-region (point-min) (point-max) emerge-file-A nil 'no-message) | |
1117 | (set-buffer-modified-p nil)) | |
1118 | (emerge-eval-in-buffer | |
1119 | buffer-B | |
1120 | (erase-buffer) | |
1121 | (shell-command | |
1122 | (format "%s -q -p%s %s" emerge-rcs-co-program revision-B file) | |
1123 | t) | |
1124 | (write-region (point-min) (point-max) emerge-file-B nil 'no-message) | |
1125 | (set-buffer-modified-p nil)) | |
1126 | (emerge-eval-in-buffer | |
1127 | buffer-ancestor | |
1128 | (erase-buffer) | |
1129 | (shell-command | |
1130 | (format "%s -q -p%s %s" emerge-rcs-co-program ancestor file) | |
1131 | t) | |
1132 | (write-region (point-min) (point-max) emerge-ancestor nil 'no-message) | |
1133 | (set-buffer-modified-p nil)) | |
1134 | ;; Do the merge | |
1135 | (emerge-setup-with-ancestor | |
1136 | buffer-A emerge-file-A buffer-B emerge-file-B | |
1137 | buffer-ancestor emerge-ancestor | |
1138 | (cons (` (lambda () | |
1139 | (delete-file (, emerge-file-A)) | |
1140 | (delete-file (, emerge-file-B)) | |
1141 | (delete-file (, emerge-ancestor)))) | |
1142 | startup-hooks) | |
1143 | (cons (` (lambda () (emerge-files-exit (, file)))) | |
1144 | quit-hooks) | |
1145 | output-file))) | |
1146 | ||
1147 | ;;; Function to start Emerge based on a line in a file | |
1148 | ||
1149 | (defun emerge-execute-line () | |
737e3892 RS |
1150 | "Run Emerge using files named in current text line. |
1151 | Looks in that line for whitespace-separated entries of these forms: | |
151e4b9c RS |
1152 | a=file1 |
1153 | b=file2 | |
1154 | ancestor=file3 | |
1155 | output=file4 | |
737e3892 | 1156 | to specify the files to use in Emerge. |
151e4b9c | 1157 | |
737e3892 | 1158 | In addition, if only one of `a=file' or `b=file' is present, and `output=file' |
151e4b9c | 1159 | is present: |
737e3892 | 1160 | If `emerge-execute-line-deletions' is non-nil and `ancestor=file' is present, |
151e4b9c RS |
1161 | it is assumed that the file in question has been deleted, and it is |
1162 | not copied to the output file. | |
1163 | Otherwise, the A or B file present is copied to the output file." | |
1164 | (interactive) | |
1165 | (let (file-A file-B file-ancestor file-out | |
1166 | (case-fold-search t)) | |
1167 | ;; Stop if at end of buffer (even though we might be in a line, if | |
1168 | ;; the line does not end with newline) | |
1169 | (if (eobp) | |
1170 | (error "At end of buffer")) | |
1171 | ;; Go to the beginning of the line | |
1172 | (beginning-of-line) | |
1173 | ;; Skip any initial whitespace | |
1174 | (if (looking-at "[ \t]*") | |
1175 | (goto-char (match-end 0))) | |
1176 | ;; Process the entire line | |
1177 | (while (not (eolp)) | |
1178 | ;; Get the next entry | |
1179 | (if (looking-at "\\([a-z]+\\)=\\([^ \t\n]+\\)[ \t]*") | |
1180 | ;; Break apart the tab (before =) and the filename (after =) | |
1181 | (let ((tag (downcase | |
1182 | (buffer-substring (match-beginning 1) (match-end 1)))) | |
1183 | (file (buffer-substring (match-beginning 2) (match-end 2)))) | |
1184 | ;; Move point after the entry | |
1185 | (goto-char (match-end 0)) | |
1186 | ;; Store the filename in the right variable | |
1187 | (cond | |
1188 | ((string-equal tag "a") | |
1189 | (if file-A | |
737e3892 | 1190 | (error "This line has two `A' entries")) |
151e4b9c RS |
1191 | (setq file-A file)) |
1192 | ((string-equal tag "b") | |
1193 | (if file-B | |
737e3892 | 1194 | (error "This line has two `B' entries")) |
151e4b9c RS |
1195 | (setq file-B file)) |
1196 | ((or (string-equal tag "anc") (string-equal tag "ancestor")) | |
1197 | (if file-ancestor | |
737e3892 | 1198 | (error "This line has two `ancestor' entries")) |
151e4b9c RS |
1199 | (setq file-ancestor file)) |
1200 | ((or (string-equal tag "out") (string-equal tag "output")) | |
1201 | (if file-out | |
737e3892 | 1202 | (error "This line has two `output' entries")) |
151e4b9c RS |
1203 | (setq file-out file)) |
1204 | (t | |
1205 | (error "Unrecognized entry")))) | |
1206 | ;; If the match on the entry pattern failed | |
eb8c3be9 | 1207 | (error "Unparsable entry"))) |
151e4b9c RS |
1208 | ;; Make sure that file-A and file-B are present |
1209 | (if (not (or (and file-A file-B) file-out)) | |
737e3892 | 1210 | (error "Must have both `A' and `B' entries")) |
151e4b9c | 1211 | (if (not (or file-A file-B)) |
737e3892 | 1212 | (error "Must have `A' or `B' entry")) |
151e4b9c RS |
1213 | ;; Go to the beginning of the next line, so next execution will use |
1214 | ;; next line in buffer. | |
1215 | (beginning-of-line 2) | |
1216 | ;; Execute the correct command | |
1217 | (cond | |
1218 | ;; Merge of two files with ancestor | |
1219 | ((and file-A file-B file-ancestor) | |
1220 | (message "Merging %s and %s..." file-A file-B) | |
1221 | (emerge-files-with-ancestor (not (not file-out)) file-A file-B | |
1222 | file-ancestor file-out | |
1223 | nil | |
1224 | ;; When done, return to this buffer. | |
1225 | (list | |
1226 | (` (lambda () | |
1227 | (switch-to-buffer (, (current-buffer))) | |
1228 | (message "Merge done.")))))) | |
1229 | ;; Merge of two files without ancestor | |
1230 | ((and file-A file-B) | |
1231 | (message "Merging %s and %s..." file-A file-B) | |
1232 | (emerge-files (not (not file-out)) file-A file-B file-out | |
1233 | nil | |
1234 | ;; When done, return to this buffer. | |
1235 | (list | |
1236 | (` (lambda () | |
1237 | (switch-to-buffer (, (current-buffer))) | |
1238 | (message "Merge done.")))))) | |
1239 | ;; There is an output file (or there would have been an error above), | |
1240 | ;; but only one input file. | |
1241 | ;; The file appears to have been deleted in one version; do nothing. | |
1242 | ((and file-ancestor emerge-execute-line-deletions) | |
1243 | (message "No action.")) | |
1244 | ;; The file should be copied from the version that contains it | |
1245 | (t (let ((input-file (or file-A file-B))) | |
1246 | (message "Copying...") | |
1247 | (copy-file input-file file-out) | |
1248 | (message "%s copied to %s." input-file file-out)))))) | |
1249 | ||
1250 | ;;; Sample function for creating information for emerge-execute-line | |
1251 | ||
1252 | (defvar emerge-merge-directories-filename-regexp "[^.]" | |
737e3892 | 1253 | "Regexp describing files to be processed by `emerge-merge-directories'.") |
151e4b9c | 1254 | |
9343c8ee | 1255 | ;;;###autoload |
151e4b9c RS |
1256 | (defun emerge-merge-directories (a-dir b-dir ancestor-dir output-dir) |
1257 | (interactive | |
1258 | (list | |
1259 | (read-file-name "A directory: " nil nil 'confirm) | |
1260 | (read-file-name "B directory: " nil nil 'confirm) | |
1261 | (read-file-name "Ancestor directory (null for none): " nil nil 'confirm) | |
1262 | (read-file-name "Output directory (null for none): " nil nil 'confirm))) | |
1263 | ;; Check that we're not on a line | |
1264 | (if (not (and (bolp) (eolp))) | |
1265 | (error "There is text on this line")) | |
1266 | ;; Turn null strings into nil to indicate directories not used. | |
1267 | (if (and ancestor-dir (string-equal ancestor-dir "")) | |
1268 | (setq ancestor-dir nil)) | |
1269 | (if (and output-dir (string-equal output-dir "")) | |
1270 | (setq output-dir nil)) | |
1271 | ;; Canonicalize the directory names | |
1272 | (setq a-dir (expand-file-name a-dir)) | |
1273 | (if (not (string-equal (substring a-dir -1) "/")) | |
1274 | (setq a-dir (concat a-dir "/"))) | |
1275 | (setq b-dir (expand-file-name b-dir)) | |
1276 | (if (not (string-equal (substring b-dir -1) "/")) | |
1277 | (setq b-dir (concat b-dir "/"))) | |
1278 | (if ancestor-dir | |
1279 | (progn | |
1280 | (setq ancestor-dir (expand-file-name ancestor-dir)) | |
1281 | (if (not (string-equal (substring ancestor-dir -1) "/")) | |
1282 | (setq ancestor-dir (concat ancestor-dir "/"))))) | |
1283 | (if output-dir | |
1284 | (progn | |
1285 | (setq output-dir (expand-file-name output-dir)) | |
1286 | (if (not (string-equal (substring output-dir -1) "/")) | |
1287 | (setq output-dir (concat output-dir "/"))))) | |
1288 | ;; Set the mark to where we start | |
1289 | (push-mark) | |
1290 | ;; Find out what files are in the directories. | |
1291 | (let* ((a-dir-files | |
1292 | (directory-files a-dir nil emerge-merge-directories-filename-regexp)) | |
1293 | (b-dir-files | |
1294 | (directory-files b-dir nil emerge-merge-directories-filename-regexp)) | |
1295 | (ancestor-dir-files | |
1296 | (and ancestor-dir | |
1297 | (directory-files ancestor-dir nil | |
1298 | emerge-merge-directories-filename-regexp))) | |
1299 | (all-files (sort (nconc (copy-sequence a-dir-files) | |
1300 | (copy-sequence b-dir-files) | |
1301 | (copy-sequence ancestor-dir-files)) | |
1302 | (function string-lessp)))) | |
1303 | ;; Remove duplicates from all-files. | |
1304 | (let ((p all-files)) | |
1305 | (while p | |
1306 | (if (and (cdr p) (string-equal (car p) (car (cdr p)))) | |
1307 | (setcdr p (cdr (cdr p))) | |
1308 | (setq p (cdr p))))) | |
1309 | ;; Generate the control lines for the various files. | |
1310 | (while all-files | |
1311 | (let ((f (car all-files))) | |
1312 | (setq all-files (cdr all-files)) | |
1313 | (if (and a-dir-files (string-equal (car a-dir-files) f)) | |
1314 | (progn | |
1315 | (insert "A=" a-dir f "\t") | |
1316 | (setq a-dir-files (cdr a-dir-files)))) | |
1317 | (if (and b-dir-files (string-equal (car b-dir-files) f)) | |
1318 | (progn | |
1319 | (insert "B=" b-dir f "\t") | |
1320 | (setq b-dir-files (cdr b-dir-files)))) | |
1321 | (if (and ancestor-dir-files (string-equal (car ancestor-dir-files) f)) | |
1322 | (progn | |
1323 | (insert "ancestor=" ancestor-dir f "\t") | |
1324 | (setq ancestor-dir-files (cdr ancestor-dir-files)))) | |
1325 | (if output-dir | |
1326 | (insert "output=" output-dir f "\t")) | |
1327 | (backward-delete-char 1) | |
1328 | (insert "\n"))))) | |
1329 | ||
3b4a6e27 JB |
1330 | ;;; Common setup routines |
1331 | ||
1332 | ;; Set up the window configuration. If POS is given, set the points to | |
1333 | ;; the beginnings of the buffers. | |
1334 | (defun emerge-setup-windows (buffer-A buffer-B merge-buffer &optional pos) | |
1335 | ;; Make sure we are not in the minibuffer window when we try to delete | |
1336 | ;; all other windows. | |
1337 | (if (eq (selected-window) (minibuffer-window)) | |
1338 | (other-window 1)) | |
1339 | (delete-other-windows) | |
1340 | (switch-to-buffer merge-buffer) | |
1341 | (emerge-refresh-mode-line) | |
1342 | (split-window-vertically) | |
1343 | (split-window-horizontally) | |
1344 | (switch-to-buffer buffer-A) | |
1345 | (if pos | |
1346 | (goto-char (point-min))) | |
1347 | (other-window 1) | |
1348 | (switch-to-buffer buffer-B) | |
1349 | (if pos | |
1350 | (goto-char (point-min))) | |
1351 | (other-window 1) | |
1352 | (if pos | |
1353 | (goto-char (point-min))) | |
1354 | ;; If diff/diff3 reports errors, display them rather than the merge buffer. | |
1355 | (if (/= 0 (emerge-eval-in-buffer emerge-diff-error-buffer (buffer-size))) | |
1356 | (progn | |
1357 | (ding) | |
1358 | (message "Errors found in diff/diff3 output. Merge buffer is %s." | |
1359 | (buffer-name emerge-merge-buffer)) | |
1360 | (switch-to-buffer emerge-diff-error-buffer)))) | |
1361 | ||
1362 | ;; Set up the keymap in the merge buffer | |
1363 | (defun emerge-set-keys () | |
1364 | ;; Set up fixed keymaps if necessary | |
1365 | (if (not emerge-basic-keymap) | |
1366 | (emerge-setup-fixed-keymaps)) | |
1367 | ;; Save the old local map | |
1368 | (setq emerge-old-keymap (current-local-map)) | |
1369 | ;; Construct the edit keymap | |
1370 | (setq emerge-edit-keymap (if emerge-old-keymap | |
1371 | (copy-keymap emerge-old-keymap) | |
1372 | (make-sparse-keymap))) | |
1373 | ;; Install the Emerge commands | |
1374 | (emerge-force-define-key emerge-edit-keymap emerge-command-prefix | |
1375 | 'emerge-basic-keymap) | |
ff5f6ddd RS |
1376 | (define-key emerge-edit-keymap [menu-bar] (make-sparse-keymap)) |
1377 | ||
1378 | ;; Create the additional menu bar items. | |
1379 | (define-key emerge-edit-keymap [menu-bar options] | |
1380 | (cons "Options" emerge-options-menu)) | |
1381 | (define-key emerge-edit-keymap [menu-bar merge] | |
1382 | (cons "Merge" emerge-merge-menu)) | |
1383 | (define-key emerge-edit-keymap [menu-bar move] | |
1384 | (cons "Move" emerge-move-menu)) | |
1385 | ||
3b4a6e27 | 1386 | ;; Suppress write-file and save-buffer |
737e3892 RS |
1387 | (substitute-key-definition 'write-file |
1388 | 'emerge-query-write-file | |
1389 | emerge-edit-keymap) | |
1390 | (substitute-key-definition 'save-buffer | |
1391 | 'emerge-query-save-buffer | |
1392 | emerge-edit-keymap) | |
1393 | (substitute-key-definition 'write-file 'emerge-query-write-file | |
1394 | emerge-edit-keymap (current-global-map)) | |
1395 | (substitute-key-definition 'save-buffer 'emerge-query-save-buffer | |
1396 | emerge-edit-keymap (current-global-map)) | |
3b4a6e27 JB |
1397 | (use-local-map emerge-fast-keymap) |
1398 | (setq emerge-edit-mode nil) | |
1399 | (setq emerge-fast-mode t)) | |
1400 | ||
1401 | (defun emerge-remember-buffer-characteristics () | |
737e3892 RS |
1402 | "Record certain properties of the buffers being merged. |
1403 | Must be called in the merge buffer. Remembers read-only, modified, | |
1404 | auto-save, and saves them in buffer local variables. Sets the buffers | |
1405 | read-only and turns off `auto-save-mode'. | |
1406 | These characteristics are restored by `emerge-restore-buffer-characteristics'." | |
3b4a6e27 JB |
1407 | ;; force auto-save, because we will turn off auto-saving in buffers for the |
1408 | ;; duration | |
1409 | (do-auto-save) | |
1410 | ;; remember and alter buffer characteristics | |
1411 | (setq emerge-A-buffer-values | |
1412 | (emerge-eval-in-buffer | |
1413 | emerge-A-buffer | |
1414 | (prog1 | |
1415 | (emerge-save-variables emerge-saved-variables) | |
1416 | (emerge-restore-variables emerge-saved-variables | |
1417 | emerge-merging-values)))) | |
1418 | (setq emerge-B-buffer-values | |
1419 | (emerge-eval-in-buffer | |
1420 | emerge-B-buffer | |
1421 | (prog1 | |
1422 | (emerge-save-variables emerge-saved-variables) | |
1423 | (emerge-restore-variables emerge-saved-variables | |
1424 | emerge-merging-values))))) | |
1425 | ||
1426 | (defun emerge-restore-buffer-characteristics () | |
737e3892 | 1427 | "Restores characteristics saved by `emerge-remember-buffer-characteristics'." |
3b4a6e27 JB |
1428 | (let ((A-values emerge-A-buffer-values) |
1429 | (B-values emerge-B-buffer-values)) | |
1430 | (emerge-eval-in-buffer emerge-A-buffer | |
1431 | (emerge-restore-variables emerge-saved-variables | |
1432 | A-values)) | |
1433 | (emerge-eval-in-buffer emerge-B-buffer | |
1434 | (emerge-restore-variables emerge-saved-variables | |
1435 | B-values)))) | |
1436 | ||
4d4cd289 RS |
1437 | ;; Move to line DESIRED-LINE assuming we are at line CURRENT-LINE. |
1438 | ;; Return DESIRED-LINE. | |
1439 | (defun emerge-goto-line (desired-line current-line) | |
1440 | (forward-line (- desired-line current-line)) | |
d9021674 | 1441 | desired-line) |
4d4cd289 | 1442 | |
3b4a6e27 JB |
1443 | (defun emerge-convert-diffs-to-markers (A-buffer |
1444 | B-buffer | |
1445 | merge-buffer | |
1446 | lineno-list) | |
1447 | (let* (marker-list | |
1448 | (A-point-min (emerge-eval-in-buffer A-buffer (point-min))) | |
1449 | (offset (1- A-point-min)) | |
3b4a6e27 | 1450 | (B-point-min (emerge-eval-in-buffer B-buffer (point-min))) |
4d4cd289 RS |
1451 | ;; Record current line number in each buffer |
1452 | ;; so we don't have to count from the beginning. | |
d9021674 KH |
1453 | (a-line 1) |
1454 | (b-line 1)) | |
4d4cd289 RS |
1455 | (emerge-eval-in-buffer A-buffer (goto-char (point-min))) |
1456 | (emerge-eval-in-buffer B-buffer (goto-char (point-min))) | |
3b4a6e27 JB |
1457 | (while lineno-list |
1458 | (let* ((list-element (car lineno-list)) | |
1459 | a-begin-marker | |
1460 | a-end-marker | |
1461 | b-begin-marker | |
1462 | b-end-marker | |
151e4b9c RS |
1463 | merge-begin-marker |
1464 | merge-end-marker | |
3b4a6e27 JB |
1465 | (a-begin (aref list-element 0)) |
1466 | (a-end (aref list-element 1)) | |
1467 | (b-begin (aref list-element 2)) | |
1468 | (b-end (aref list-element 3)) | |
1469 | (state (aref list-element 4))) | |
1470 | ;; place markers at the appropriate places in the buffers | |
1471 | (emerge-eval-in-buffer | |
1472 | A-buffer | |
d9021674 | 1473 | (setq a-line (emerge-goto-line a-begin a-line)) |
3b4a6e27 | 1474 | (setq a-begin-marker (point-marker)) |
d9021674 | 1475 | (setq a-line (emerge-goto-line a-end a-line)) |
3b4a6e27 JB |
1476 | (setq a-end-marker (point-marker))) |
1477 | (emerge-eval-in-buffer | |
1478 | B-buffer | |
d9021674 | 1479 | (setq b-line (emerge-goto-line b-begin b-line)) |
3b4a6e27 | 1480 | (setq b-begin-marker (point-marker)) |
d9021674 | 1481 | (setq b-line (emerge-goto-line b-end b-line)) |
3b4a6e27 JB |
1482 | (setq b-end-marker (point-marker))) |
1483 | (setq merge-begin-marker (set-marker | |
1484 | (make-marker) | |
1485 | (- (marker-position a-begin-marker) | |
1486 | offset) | |
1487 | merge-buffer)) | |
1488 | (setq merge-end-marker (set-marker | |
1489 | (make-marker) | |
1490 | (- (marker-position a-end-marker) | |
1491 | offset) | |
1492 | merge-buffer)) | |
1493 | ;; record all the markers for this difference | |
1494 | (setq marker-list (cons (vector a-begin-marker a-end-marker | |
1495 | b-begin-marker b-end-marker | |
1496 | merge-begin-marker merge-end-marker | |
1497 | state) | |
1498 | marker-list))) | |
1499 | (setq lineno-list (cdr lineno-list))) | |
1500 | ;; convert the list of difference information into a vector for | |
1501 | ;; fast access | |
1502 | (setq emerge-difference-list (apply 'vector (nreverse marker-list))))) | |
1503 | ||
1504 | ;; If we have an ancestor, select all B variants that we prefer | |
1505 | (defun emerge-select-prefer-Bs () | |
1506 | (let ((n 0)) | |
1507 | (while (< n emerge-number-of-differences) | |
1508 | (if (eq (aref (aref emerge-difference-list n) 6) 'prefer-B) | |
1509 | (progn | |
1510 | (emerge-unselect-and-select-difference n t) | |
1511 | (emerge-select-B) | |
1512 | (aset (aref emerge-difference-list n) 6 'prefer-B))) | |
1513 | (setq n (1+ n)))) | |
1514 | (emerge-unselect-and-select-difference -1)) | |
1515 | ||
151e4b9c RS |
1516 | ;; Process the local-variables list at the end of the merged file, if |
1517 | ;; requested. | |
1518 | (defun emerge-handle-local-variables () | |
1519 | (if emerge-process-local-variables | |
1520 | (condition-case err | |
4a6e3980 | 1521 | (hack-local-variables) |
151e4b9c RS |
1522 | (error (message "Local-variables error in merge buffer: %s" |
1523 | (prin1-to-string err)))))) | |
1524 | ||
3b4a6e27 JB |
1525 | ;;; Common exit routines |
1526 | ||
1527 | (defun emerge-write-and-delete (file-out) | |
1528 | ;; clear screen format | |
1529 | (delete-other-windows) | |
1530 | ;; delete A, B, and ancestor buffers, if they haven't been changed | |
1531 | (if (not (buffer-modified-p emerge-A-buffer)) | |
1532 | (kill-buffer emerge-A-buffer)) | |
1533 | (if (not (buffer-modified-p emerge-B-buffer)) | |
1534 | (kill-buffer emerge-B-buffer)) | |
1535 | (if (and emerge-ancestor-buffer | |
1536 | (not (buffer-modified-p emerge-ancestor-buffer))) | |
1537 | (kill-buffer emerge-ancestor-buffer)) | |
1538 | ;; Write merge buffer to file | |
737e3892 RS |
1539 | (and file-out |
1540 | (write-file file-out))) | |
3b4a6e27 JB |
1541 | |
1542 | ;;; Commands | |
1543 | ||
1544 | (defun emerge-recenter (&optional arg) | |
737e3892 RS |
1545 | "Bring the highlighted region of all three merge buffers into view. |
1546 | This brings the buffers into view if they are in windows. | |
1547 | With an argument, reestablish the default three-window display." | |
3b4a6e27 JB |
1548 | (interactive "P") |
1549 | ;; If there is an argument, rebuild the window structure | |
1550 | (if arg | |
1551 | (emerge-setup-windows emerge-A-buffer emerge-B-buffer | |
1552 | emerge-merge-buffer)) | |
1553 | ;; Redisplay whatever buffers are showing, if there is a selected difference | |
1554 | (if (and (>= emerge-current-difference 0) | |
1555 | (< emerge-current-difference emerge-number-of-differences)) | |
1556 | (let* ((merge-buffer emerge-merge-buffer) | |
1557 | (buffer-A emerge-A-buffer) | |
1558 | (buffer-B emerge-B-buffer) | |
f405e887 RS |
1559 | (window-A (get-buffer-window buffer-A 'visible)) |
1560 | (window-B (get-buffer-window buffer-B 'visible)) | |
3b4a6e27 JB |
1561 | (merge-window (get-buffer-window merge-buffer)) |
1562 | (diff-vector | |
1563 | (aref emerge-difference-list emerge-current-difference))) | |
1564 | (if window-A (progn | |
1565 | (select-window window-A) | |
1566 | (emerge-position-region | |
1567 | (- (aref diff-vector 0) | |
1568 | (1- emerge-before-flag-length)) | |
1569 | (+ (aref diff-vector 1) | |
1570 | (1- emerge-after-flag-length)) | |
1571 | (1+ (aref diff-vector 0))))) | |
1572 | (if window-B (progn | |
1573 | (select-window window-B) | |
1574 | (emerge-position-region | |
1575 | (- (aref diff-vector 2) | |
1576 | (1- emerge-before-flag-length)) | |
1577 | (+ (aref diff-vector 3) | |
1578 | (1- emerge-after-flag-length)) | |
1579 | (1+ (aref diff-vector 2))))) | |
1580 | (if merge-window (progn | |
1581 | (select-window merge-window) | |
1582 | (emerge-position-region | |
1583 | (- (aref diff-vector 4) | |
1584 | (1- emerge-before-flag-length)) | |
1585 | (+ (aref diff-vector 5) | |
1586 | (1- emerge-after-flag-length)) | |
1587 | (1+ (aref diff-vector 4)))))))) | |
1588 | ||
1589 | ;;; Window scrolling operations | |
1590 | ;; These operations are designed to scroll all three windows the same amount, | |
1591 | ;; so as to keep the text in them aligned. | |
1592 | ||
1593 | ;; Perform some operation on all three windows (if they are showing). | |
1594 | ;; Catches all errors on the operation in the A and B windows, but not | |
1595 | ;; in the merge window. Usually, errors come from scrolling off the | |
1596 | ;; beginning or end of the buffer, and this gives a nice error message: | |
1597 | ;; End of buffer is reported in the merge buffer, but if the scroll was | |
1598 | ;; possible in the A or B windows, it is performed there before the error | |
1599 | ;; is reported. | |
1600 | (defun emerge-operate-on-windows (operation arg) | |
1601 | (let* ((merge-buffer emerge-merge-buffer) | |
1602 | (buffer-A emerge-A-buffer) | |
1603 | (buffer-B emerge-B-buffer) | |
f405e887 RS |
1604 | (window-A (get-buffer-window buffer-A 'visible)) |
1605 | (window-B (get-buffer-window buffer-B 'visible)) | |
3b4a6e27 JB |
1606 | (merge-window (get-buffer-window merge-buffer))) |
1607 | (if window-A (progn | |
1608 | (select-window window-A) | |
1609 | (condition-case nil | |
1610 | (funcall operation arg) | |
1611 | (error)))) | |
1612 | (if window-B (progn | |
1613 | (select-window window-B) | |
1614 | (condition-case nil | |
1615 | (funcall operation arg) | |
1616 | (error)))) | |
1617 | (if merge-window (progn | |
1618 | (select-window merge-window) | |
1619 | (funcall operation arg))))) | |
1620 | ||
1621 | (defun emerge-scroll-up (&optional arg) | |
1622 | "Scroll up all three merge buffers, if they are in windows. | |
737e3892 RS |
1623 | With argument N, scroll N lines; otherwise scroll by nearly |
1624 | the height of the merge window. | |
1625 | `C-u -' alone as argument scrolls half the height of the merge window." | |
3b4a6e27 JB |
1626 | (interactive "P") |
1627 | (emerge-operate-on-windows | |
1628 | 'scroll-up | |
1629 | ;; calculate argument to scroll-up | |
1630 | ;; if there is an explicit argument | |
1631 | (if (and arg (not (equal arg '-))) | |
1632 | ;; use it | |
1633 | (prefix-numeric-value arg) | |
1634 | ;; if not, see if we can determine a default amount (the window height) | |
1635 | (let ((merge-window (get-buffer-window emerge-merge-buffer))) | |
1636 | (if (null merge-window) | |
1637 | ;; no window, use nil | |
1638 | nil | |
1639 | (let ((default-amount | |
1640 | (- (window-height merge-window) 1 next-screen-context-lines))) | |
1641 | ;; the window was found | |
1642 | (if arg | |
1643 | ;; C-u as argument means half of default amount | |
1644 | (/ default-amount 2) | |
1645 | ;; no argument means default amount | |
1646 | default-amount))))))) | |
1647 | ||
1648 | (defun emerge-scroll-down (&optional arg) | |
1649 | "Scroll down all three merge buffers, if they are in windows. | |
737e3892 RS |
1650 | With argument N, scroll N lines; otherwise scroll by nearly |
1651 | the height of the merge window. | |
1652 | `C-u -' alone as argument scrolls half the height of the merge window." | |
3b4a6e27 JB |
1653 | (interactive "P") |
1654 | (emerge-operate-on-windows | |
1655 | 'scroll-down | |
1656 | ;; calculate argument to scroll-down | |
1657 | ;; if there is an explicit argument | |
1658 | (if (and arg (not (equal arg '-))) | |
1659 | ;; use it | |
1660 | (prefix-numeric-value arg) | |
1661 | ;; if not, see if we can determine a default amount (the window height) | |
1662 | (let ((merge-window (get-buffer-window emerge-merge-buffer))) | |
1663 | (if (null merge-window) | |
1664 | ;; no window, use nil | |
1665 | nil | |
1666 | (let ((default-amount | |
1667 | (- (window-height merge-window) 1 next-screen-context-lines))) | |
1668 | ;; the window was found | |
1669 | (if arg | |
1670 | ;; C-u as argument means half of default amount | |
1671 | (/ default-amount 2) | |
1672 | ;; no argument means default amount | |
1673 | default-amount))))))) | |
1674 | ||
1675 | (defun emerge-scroll-left (&optional arg) | |
1676 | "Scroll left all three merge buffers, if they are in windows. | |
737e3892 | 1677 | If an argument is given, that is how many columns are scrolled, else nearly |
151e4b9c | 1678 | the width of the A and B windows. `C-u -' alone as argument scrolls half the |
3b4a6e27 JB |
1679 | width of the A and B windows." |
1680 | (interactive "P") | |
1681 | (emerge-operate-on-windows | |
1682 | 'scroll-left | |
1683 | ;; calculate argument to scroll-left | |
1684 | ;; if there is an explicit argument | |
1685 | (if (and arg (not (equal arg '-))) | |
1686 | ;; use it | |
1687 | (prefix-numeric-value arg) | |
1688 | ;; if not, see if we can determine a default amount | |
1689 | ;; (half the window width) | |
1690 | (let ((merge-window (get-buffer-window emerge-merge-buffer))) | |
1691 | (if (null merge-window) | |
1692 | ;; no window, use nil | |
1693 | nil | |
1694 | (let ((default-amount | |
1695 | (- (/ (window-width merge-window) 2) 3))) | |
1696 | ;; the window was found | |
1697 | (if arg | |
1698 | ;; C-u as argument means half of default amount | |
1699 | (/ default-amount 2) | |
1700 | ;; no argument means default amount | |
1701 | default-amount))))))) | |
1702 | ||
1703 | (defun emerge-scroll-right (&optional arg) | |
1704 | "Scroll right all three merge buffers, if they are in windows. | |
737e3892 | 1705 | If an argument is given, that is how many columns are scrolled, else nearly |
151e4b9c | 1706 | the width of the A and B windows. `C-u -' alone as argument scrolls half the |
3b4a6e27 JB |
1707 | width of the A and B windows." |
1708 | (interactive "P") | |
1709 | (emerge-operate-on-windows | |
1710 | 'scroll-right | |
1711 | ;; calculate argument to scroll-right | |
1712 | ;; if there is an explicit argument | |
1713 | (if (and arg (not (equal arg '-))) | |
1714 | ;; use it | |
1715 | (prefix-numeric-value arg) | |
1716 | ;; if not, see if we can determine a default amount | |
1717 | ;; (half the window width) | |
1718 | (let ((merge-window (get-buffer-window emerge-merge-buffer))) | |
1719 | (if (null merge-window) | |
1720 | ;; no window, use nil | |
1721 | nil | |
1722 | (let ((default-amount | |
1723 | (- (/ (window-width merge-window) 2) 3))) | |
1724 | ;; the window was found | |
1725 | (if arg | |
1726 | ;; C-u as argument means half of default amount | |
1727 | (/ default-amount 2) | |
1728 | ;; no argument means default amount | |
1729 | default-amount))))))) | |
1730 | ||
1731 | (defun emerge-scroll-reset () | |
737e3892 RS |
1732 | "Reset horizontal scrolling in Emerge. |
1733 | This resets the horizontal scrolling of all three merge buffers | |
1734 | to the left margin, if they are in windows." | |
3b4a6e27 JB |
1735 | (interactive) |
1736 | (emerge-operate-on-windows | |
1737 | (function (lambda (x) (set-window-hscroll (selected-window) 0))) | |
1738 | nil)) | |
1739 | ||
1740 | ;; Attempt to show the region nicely. | |
1741 | ;; If there are min-lines lines above and below the region, then don't do | |
1742 | ;; anything. | |
1743 | ;; If not, recenter the region to make it so. | |
a7acbbe4 | 1744 | ;; If that isn't possible, remove context lines balancedly from top and bottom |
3b4a6e27 JB |
1745 | ;; so the entire region shows. |
1746 | ;; If that isn't possible, show the top of the region. | |
1747 | ;; BEG must be at the beginning of a line. | |
1748 | (defun emerge-position-region (beg end pos) | |
1749 | ;; First test whether the entire region is visible with | |
1750 | ;; emerge-min-visible-lines above and below it | |
1751 | (if (not (and (<= (progn | |
1752 | (move-to-window-line emerge-min-visible-lines) | |
1753 | (point)) | |
1754 | beg) | |
1755 | (<= end (progn | |
1756 | (move-to-window-line | |
1757 | (- (1+ emerge-min-visible-lines))) | |
1758 | (point))))) | |
1759 | ;; We failed that test, see if it fits at all | |
1760 | ;; Meanwhile positioning it correctly in case it doesn't fit | |
1761 | (progn | |
1762 | (set-window-start (selected-window) beg) | |
151e4b9c | 1763 | (if (pos-visible-in-window-p end) |
3b4a6e27 JB |
1764 | ;; Determine the number of lines that the region occupies |
1765 | (let ((lines 0)) | |
1766 | (while (> end (progn | |
1767 | (move-to-window-line lines) | |
1768 | (point))) | |
1769 | (setq lines (1+ lines))) | |
1770 | ;; And position the beginning on the right line | |
1771 | (goto-char beg) | |
1772 | (recenter (/ (1+ (- (1- (window-height (selected-window))) | |
1773 | lines)) | |
1774 | 2)))))) | |
1775 | (goto-char pos)) | |
1776 | ||
1777 | (defun emerge-next-difference () | |
1778 | "Advance to the next difference." | |
1779 | (interactive) | |
1780 | (if (< emerge-current-difference emerge-number-of-differences) | |
1781 | (let ((n (1+ emerge-current-difference))) | |
1782 | (while (and emerge-skip-prefers | |
1783 | (< n emerge-number-of-differences) | |
1784 | (memq (aref (aref emerge-difference-list n) 6) | |
1785 | '(prefer-A prefer-B))) | |
1786 | (setq n (1+ n))) | |
1787 | (let ((buffer-read-only nil)) | |
1788 | (emerge-unselect-and-select-difference n))) | |
1789 | (error "At end"))) | |
1790 | ||
1791 | (defun emerge-previous-difference () | |
1792 | "Go to the previous difference." | |
1793 | (interactive) | |
1794 | (if (> emerge-current-difference -1) | |
1795 | (let ((n (1- emerge-current-difference))) | |
1796 | (while (and emerge-skip-prefers | |
1797 | (> n -1) | |
1798 | (memq (aref (aref emerge-difference-list n) 6) | |
1799 | '(prefer-A prefer-B))) | |
1800 | (setq n (1- n))) | |
1801 | (let ((buffer-read-only nil)) | |
1802 | (emerge-unselect-and-select-difference n))) | |
1803 | (error "At beginning"))) | |
1804 | ||
1805 | (defun emerge-jump-to-difference (difference-number) | |
1806 | "Go to the N-th difference." | |
1807 | (interactive "p") | |
1808 | (let ((buffer-read-only nil)) | |
1809 | (setq difference-number (1- difference-number)) | |
1810 | (if (and (>= difference-number -1) | |
1811 | (< difference-number (1+ emerge-number-of-differences))) | |
1812 | (emerge-unselect-and-select-difference difference-number) | |
1813 | (error "Bad difference number")))) | |
1814 | ||
737e3892 RS |
1815 | (defun emerge-abort () |
1816 | "Abort the Emerge session." | |
1817 | (interactive) | |
1818 | (emerge-quit t)) | |
1819 | ||
3b4a6e27 | 1820 | (defun emerge-quit (arg) |
737e3892 RS |
1821 | "Finish the Emerge session and exit Emerge. |
1822 | Prefix argument means to abort rather than successfully finish. | |
1823 | The difference depends on how the merge was started, | |
3b4a6e27 JB |
1824 | but usually means to not write over one of the original files, or to signal |
1825 | to some process which invoked Emerge a failure code. | |
1826 | ||
1827 | Unselects the selected difference, if any, restores the read-only and modified | |
1828 | flags of the merged file buffers, restores the local keymap of the merge | |
1829 | buffer, and sets off various emerge flags. Using Emerge commands in this | |
1830 | buffer after this will cause serious problems." | |
1831 | (interactive "P") | |
1832 | (if (prog1 | |
1833 | (y-or-n-p | |
1834 | (if (not arg) | |
1835 | "Do you really want to successfully finish this merge? " | |
1836 | "Do you really want to abort this merge? ")) | |
1837 | (message "")) | |
1838 | (emerge-really-quit arg))) | |
1839 | ||
1840 | ;; Perform the quit operations. | |
1841 | (defun emerge-really-quit (arg) | |
1842 | (setq buffer-read-only nil) | |
1843 | (emerge-unselect-and-select-difference -1) | |
1844 | (emerge-restore-buffer-characteristics) | |
1845 | ;; null out the difference markers so they don't slow down future editing | |
1846 | ;; operations | |
1847 | (mapcar (function (lambda (d) | |
1848 | (set-marker (aref d 0) nil) | |
1849 | (set-marker (aref d 1) nil) | |
1850 | (set-marker (aref d 2) nil) | |
1851 | (set-marker (aref d 3) nil) | |
1852 | (set-marker (aref d 4) nil) | |
1853 | (set-marker (aref d 5) nil))) | |
1854 | emerge-difference-list) | |
1855 | ;; allow them to be garbage collected | |
1856 | (setq emerge-difference-list nil) | |
1857 | ;; restore the local map | |
1858 | (use-local-map emerge-old-keymap) | |
1859 | ;; turn off all the emerge modes | |
1860 | (setq emerge-mode nil) | |
1861 | (setq emerge-fast-mode nil) | |
1862 | (setq emerge-edit-mode nil) | |
1863 | (setq emerge-auto-advance nil) | |
1864 | (setq emerge-skip-prefers nil) | |
1865 | ;; restore mode line | |
1866 | (kill-local-variable 'mode-line-buffer-identification) | |
1867 | (let ((emerge-prefix-argument arg)) | |
737e3892 | 1868 | (run-hooks 'emerge-quit-hook))) |
3b4a6e27 JB |
1869 | |
1870 | (defun emerge-select-A (&optional force) | |
737e3892 RS |
1871 | "Select the A variant of this difference. |
1872 | Refuses to function if this difference has been edited, i.e., if it | |
1873 | is neither the A nor the B variant. | |
1874 | A prefix argument forces the variant to be selected | |
1875 | even if the difference has been edited." | |
3b4a6e27 JB |
1876 | (interactive "P") |
1877 | (let ((operate | |
1878 | (function (lambda () | |
1879 | (emerge-select-A-edit merge-begin merge-end A-begin A-end) | |
1880 | (if emerge-auto-advance | |
1881 | (emerge-next-difference))))) | |
1882 | (operate-no-change | |
1883 | (function (lambda () | |
1884 | (if emerge-auto-advance | |
1885 | (emerge-next-difference)))))) | |
1886 | (emerge-select-version force operate-no-change operate operate))) | |
1887 | ||
1888 | ;; Actually select the A variant | |
1889 | (defun emerge-select-A-edit (merge-begin merge-end A-begin A-end) | |
1890 | (emerge-eval-in-buffer | |
1891 | emerge-merge-buffer | |
1892 | (delete-region merge-begin merge-end) | |
1893 | (goto-char merge-begin) | |
1894 | (insert-buffer-substring emerge-A-buffer A-begin A-end) | |
1895 | (goto-char merge-begin) | |
1896 | (aset diff-vector 6 'A) | |
1897 | (emerge-refresh-mode-line))) | |
1898 | ||
1899 | (defun emerge-select-B (&optional force) | |
737e3892 RS |
1900 | "Select the B variant of this difference. |
1901 | Refuses to function if this difference has been edited, i.e., if it | |
1902 | is neither the A nor the B variant. | |
1903 | A prefix argument forces the variant to be selected | |
1904 | even if the difference has been edited." | |
3b4a6e27 JB |
1905 | (interactive "P") |
1906 | (let ((operate | |
1907 | (function (lambda () | |
1908 | (emerge-select-B-edit merge-begin merge-end B-begin B-end) | |
1909 | (if emerge-auto-advance | |
1910 | (emerge-next-difference))))) | |
1911 | (operate-no-change | |
1912 | (function (lambda () | |
1913 | (if emerge-auto-advance | |
1914 | (emerge-next-difference)))))) | |
1915 | (emerge-select-version force operate operate-no-change operate))) | |
1916 | ||
1917 | ;; Actually select the B variant | |
1918 | (defun emerge-select-B-edit (merge-begin merge-end B-begin B-end) | |
1919 | (emerge-eval-in-buffer | |
1920 | emerge-merge-buffer | |
1921 | (delete-region merge-begin merge-end) | |
1922 | (goto-char merge-begin) | |
1923 | (insert-buffer-substring emerge-B-buffer B-begin B-end) | |
1924 | (goto-char merge-begin) | |
1925 | (aset diff-vector 6 'B) | |
1926 | (emerge-refresh-mode-line))) | |
1927 | ||
1928 | (defun emerge-default-A () | |
737e3892 RS |
1929 | "Make the A variant the default from here down. |
1930 | This selects the A variant for all differences from here down in the buffer | |
3b4a6e27 JB |
1931 | which are still defaulted, i.e., which the user has not selected and for |
1932 | which there is no preference." | |
1933 | (interactive) | |
1934 | (let ((buffer-read-only nil)) | |
1935 | (let ((selected-difference emerge-current-difference) | |
1936 | (n (max emerge-current-difference 0))) | |
1937 | (while (< n emerge-number-of-differences) | |
1938 | (let ((diff-vector (aref emerge-difference-list n))) | |
1939 | (if (eq (aref diff-vector 6) 'default-B) | |
1940 | (progn | |
1941 | (emerge-unselect-and-select-difference n t) | |
1942 | (emerge-select-A) | |
1943 | (aset diff-vector 6 'default-A)))) | |
1944 | (setq n (1+ n)) | |
e00fcc05 | 1945 | (if (zerop (% n 10)) |
3b4a6e27 JB |
1946 | (message "Setting default to A...%d" n))) |
1947 | (emerge-unselect-and-select-difference selected-difference))) | |
ff5f6ddd | 1948 | (message "Default choice is now A")) |
3b4a6e27 JB |
1949 | |
1950 | (defun emerge-default-B () | |
737e3892 RS |
1951 | "Make the B variant the default from here down. |
1952 | This selects the B variant for all differences from here down in the buffer | |
3b4a6e27 JB |
1953 | which are still defaulted, i.e., which the user has not selected and for |
1954 | which there is no preference." | |
1955 | (interactive) | |
1956 | (let ((buffer-read-only nil)) | |
1957 | (let ((selected-difference emerge-current-difference) | |
1958 | (n (max emerge-current-difference 0))) | |
1959 | (while (< n emerge-number-of-differences) | |
1960 | (let ((diff-vector (aref emerge-difference-list n))) | |
1961 | (if (eq (aref diff-vector 6) 'default-A) | |
1962 | (progn | |
1963 | (emerge-unselect-and-select-difference n t) | |
1964 | (emerge-select-B) | |
1965 | (aset diff-vector 6 'default-B)))) | |
1966 | (setq n (1+ n)) | |
e00fcc05 | 1967 | (if (zerop (% n 10)) |
3b4a6e27 JB |
1968 | (message "Setting default to B...%d" n))) |
1969 | (emerge-unselect-and-select-difference selected-difference))) | |
ff5f6ddd | 1970 | (message "Default choice is now B")) |
3b4a6e27 JB |
1971 | |
1972 | (defun emerge-fast-mode () | |
737e3892 RS |
1973 | "Set fast mode, for Emerge. |
1974 | In this mode ordinary Emacs commands are disabled, and Emerge commands | |
1975 | need not be prefixed with \\<emerge-fast-keymap>\\[emerge-basic-keymap]." | |
3b4a6e27 JB |
1976 | (interactive) |
1977 | (setq buffer-read-only t) | |
1978 | (use-local-map emerge-fast-keymap) | |
1979 | (setq emerge-mode t) | |
1980 | (setq emerge-fast-mode t) | |
1981 | (setq emerge-edit-mode nil) | |
1982 | (message "Fast mode set") | |
ec165e56 | 1983 | (force-mode-line-update)) |
3b4a6e27 JB |
1984 | |
1985 | (defun emerge-edit-mode () | |
737e3892 RS |
1986 | "Set edit mode, for Emerge. |
1987 | In this mode ordinary Emacs commands are available, and Emerge commands | |
1988 | must be prefixed with \\<emerge-fast-keymap>\\[emerge-basic-keymap]." | |
3b4a6e27 JB |
1989 | (interactive) |
1990 | (setq buffer-read-only nil) | |
1991 | (use-local-map emerge-edit-keymap) | |
1992 | (setq emerge-mode t) | |
1993 | (setq emerge-fast-mode nil) | |
1994 | (setq emerge-edit-mode t) | |
1995 | (message "Edit mode set") | |
ec165e56 | 1996 | (force-mode-line-update)) |
3b4a6e27 JB |
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))) | |
c880b9d5 | 2008 | (message (if emerge-auto-advance |
3b4a6e27 JB |
2009 | "Auto-advance set" |
2010 | "Auto-advance cleared")) | |
ec165e56 | 2011 | (force-mode-line-update)) |
3b4a6e27 JB |
2012 | |
2013 | (defun emerge-skip-prefers (arg) | |
737e3892 RS |
2014 | "Toggle Skip-Prefers mode, for Emerge. |
2015 | This mode causes `emerge-next-difference' and `emerge-previous-difference' | |
2016 | to automatically skip over differences for which there is a preference. | |
2017 | With a positive argument, turn on Skip-Prefers mode. | |
2018 | With a negative argument, turn off Skip-Prefers mode." | |
3b4a6e27 JB |
2019 | (interactive "P") |
2020 | (setq emerge-skip-prefers (if (null arg) | |
2021 | (not emerge-skip-prefers) | |
2022 | (> (prefix-numeric-value arg) 0))) | |
2023 | (message (if emerge-skip-prefers | |
2024 | "Skip-prefers set" | |
2025 | "Skip-prefers cleared")) | |
ec165e56 | 2026 | (force-mode-line-update)) |
3b4a6e27 JB |
2027 | |
2028 | (defun emerge-copy-as-kill-A () | |
2029 | "Put the A variant of this difference in the kill ring." | |
2030 | (interactive) | |
2031 | (emerge-validate-difference) | |
2032 | (let* ((diff-vector | |
2033 | (aref emerge-difference-list emerge-current-difference)) | |
2034 | (A-begin (1+ (aref diff-vector 0))) | |
2035 | (A-end (1- (aref diff-vector 1))) | |
2036 | ;; so further kills don't append | |
2037 | this-command) | |
2038 | (save-excursion | |
2039 | (set-buffer emerge-A-buffer) | |
2040 | (copy-region-as-kill A-begin A-end)))) | |
2041 | ||
2042 | (defun emerge-copy-as-kill-B () | |
2043 | "Put the B variant of this difference in the kill ring." | |
2044 | (interactive) | |
2045 | (emerge-validate-difference) | |
2046 | (let* ((diff-vector | |
2047 | (aref emerge-difference-list emerge-current-difference)) | |
2048 | (B-begin (1+ (aref diff-vector 2))) | |
2049 | (B-end (1- (aref diff-vector 3))) | |
2050 | ;; so further kills don't append | |
2051 | this-command) | |
2052 | (save-excursion | |
2053 | (set-buffer emerge-B-buffer) | |
2054 | (copy-region-as-kill B-begin B-end)))) | |
2055 | ||
2056 | (defun emerge-insert-A (arg) | |
2057 | "Insert the A variant of this difference at the point. | |
2058 | Leaves point after text, mark before. | |
2059 | With prefix argument, puts point before, mark after." | |
2060 | (interactive "P") | |
2061 | (emerge-validate-difference) | |
2062 | (let* ((diff-vector | |
2063 | (aref emerge-difference-list emerge-current-difference)) | |
2064 | (A-begin (1+ (aref diff-vector 0))) | |
2065 | (A-end (1- (aref diff-vector 1))) | |
2066 | (opoint (point)) | |
2067 | (buffer-read-only nil)) | |
2068 | (insert-buffer-substring emerge-A-buffer A-begin A-end) | |
2069 | (if (not arg) | |
2070 | (set-mark opoint) | |
2071 | (set-mark (point)) | |
2072 | (goto-char opoint)))) | |
2073 | ||
2074 | (defun emerge-insert-B (arg) | |
2075 | "Insert the B variant of this difference at the point. | |
2076 | Leaves point after text, mark before. | |
2077 | With prefix argument, puts point before, mark after." | |
2078 | (interactive "P") | |
2079 | (emerge-validate-difference) | |
2080 | (let* ((diff-vector | |
2081 | (aref emerge-difference-list emerge-current-difference)) | |
2082 | (B-begin (1+ (aref diff-vector 2))) | |
2083 | (B-end (1- (aref diff-vector 3))) | |
2084 | (opoint (point)) | |
2085 | (buffer-read-only nil)) | |
2086 | (insert-buffer-substring emerge-B-buffer B-begin B-end) | |
2087 | (if (not arg) | |
2088 | (set-mark opoint) | |
2089 | (set-mark (point)) | |
2090 | (goto-char opoint)))) | |
2091 | ||
2092 | (defun emerge-mark-difference (arg) | |
2093 | "Leaves the point before this difference and the mark after it. | |
2094 | With prefix argument, puts mark before, point after." | |
2095 | (interactive "P") | |
2096 | (emerge-validate-difference) | |
2097 | (let* ((diff-vector | |
2098 | (aref emerge-difference-list emerge-current-difference)) | |
2099 | (merge-begin (1+ (aref diff-vector 4))) | |
2100 | (merge-end (1- (aref diff-vector 5)))) | |
2101 | (if (not arg) | |
2102 | (progn | |
2103 | (goto-char merge-begin) | |
2104 | (set-mark merge-end)) | |
2105 | (goto-char merge-end) | |
2106 | (set-mark merge-begin)))) | |
2107 | ||
2108 | (defun emerge-file-names () | |
2109 | "Show the names of the buffers or files being operated on by Emerge. | |
737e3892 | 2110 | Use C-u l to reset the windows afterward." |
3b4a6e27 JB |
2111 | (interactive) |
2112 | (delete-other-windows) | |
737e3892 | 2113 | (let ((temp-buffer-show-function |
3b4a6e27 JB |
2114 | (function (lambda (buf) |
2115 | (split-window-vertically) | |
2116 | (switch-to-buffer buf) | |
2117 | (other-window 1))))) | |
2118 | (with-output-to-temp-buffer "*Help*" | |
2119 | (emerge-eval-in-buffer emerge-A-buffer | |
2120 | (if buffer-file-name | |
2121 | (progn | |
2122 | (princ "File A is: ") | |
2123 | (princ buffer-file-name)) | |
2124 | (progn | |
2125 | (princ "Buffer A is: ") | |
2126 | (princ (buffer-name)))) | |
2127 | (princ "\n")) | |
2128 | (emerge-eval-in-buffer emerge-B-buffer | |
2129 | (if buffer-file-name | |
2130 | (progn | |
2131 | (princ "File B is: ") | |
2132 | (princ buffer-file-name)) | |
2133 | (progn | |
2134 | (princ "Buffer B is: ") | |
2135 | (princ (buffer-name)))) | |
2136 | (princ "\n")) | |
2137 | (if emerge-ancestor-buffer | |
2138 | (emerge-eval-in-buffer emerge-ancestor-buffer | |
2139 | (if buffer-file-name | |
2140 | (progn | |
2141 | (princ "Ancestor file is: ") | |
2142 | (princ buffer-file-name)) | |
2143 | (progn | |
2144 | (princ "Ancestor buffer is: ") | |
2145 | (princ (buffer-name)))) | |
2146 | (princ "\n"))) | |
62f72ce0 KH |
2147 | (princ emerge-output-description) |
2148 | (save-excursion | |
2149 | (set-buffer standard-output) | |
2150 | (help-mode))))) | |
3b4a6e27 JB |
2151 | |
2152 | (defun emerge-join-differences (arg) | |
737e3892 | 2153 | "Join the selected difference with the following one. |
eb8c3be9 | 2154 | With a prefix argument, join with the preceding one." |
3b4a6e27 JB |
2155 | (interactive "P") |
2156 | (let ((n emerge-current-difference)) | |
2157 | ;; adjust n to be first difference to join | |
2158 | (if arg | |
2159 | (setq n (1- n))) | |
2160 | ;; n and n+1 are the differences to join | |
2161 | ;; check that they are both differences | |
2162 | (if (or (< n 0) (>= n (1- emerge-number-of-differences))) | |
2163 | (error "Incorrect differences to join")) | |
2164 | ;; remove the flags | |
2165 | (emerge-unselect-difference emerge-current-difference) | |
2166 | ;; decrement total number of differences | |
2167 | (setq emerge-number-of-differences (1- emerge-number-of-differences)) | |
2168 | ;; build new differences vector | |
2169 | (let ((i 0) | |
2170 | (new-differences (make-vector emerge-number-of-differences nil))) | |
2171 | (while (< i emerge-number-of-differences) | |
2172 | (aset new-differences i | |
2173 | (cond | |
2174 | ((< i n) (aref emerge-difference-list i)) | |
2175 | ((> i n) (aref emerge-difference-list (1+ i))) | |
2176 | (t (let ((prev (aref emerge-difference-list i)) | |
2177 | (next (aref emerge-difference-list (1+ i)))) | |
2178 | (vector (aref prev 0) | |
2179 | (aref next 1) | |
2180 | (aref prev 2) | |
2181 | (aref next 3) | |
2182 | (aref prev 4) | |
2183 | (aref next 5) | |
2184 | (let ((ps (aref prev 6)) | |
2185 | (ns (aref next 6))) | |
2186 | (cond | |
2187 | ((eq ps ns) | |
2188 | ps) | |
2189 | ((and (or (eq ps 'B) (eq ps 'prefer-B)) | |
2190 | (or (eq ns 'B) (eq ns 'prefer-B))) | |
2191 | 'B) | |
2192 | (t 'A)))))))) | |
2193 | (setq i (1+ i))) | |
2194 | (setq emerge-difference-list new-differences)) | |
2195 | ;; set the current difference correctly | |
2196 | (setq emerge-current-difference n) | |
2197 | ;; fix the mode line | |
2198 | (emerge-refresh-mode-line) | |
2199 | ;; reinsert the flags | |
2200 | (emerge-select-difference emerge-current-difference) | |
2201 | (emerge-recenter))) | |
2202 | ||
2203 | (defun emerge-split-difference () | |
2204 | "Split the current difference where the points are in the three windows." | |
2205 | (interactive) | |
2206 | (let ((n emerge-current-difference)) | |
2207 | ;; check that this is a valid difference | |
2208 | (emerge-validate-difference) | |
2209 | ;; get the point values and old difference | |
2210 | (let ((A-point (emerge-eval-in-buffer emerge-A-buffer | |
2211 | (point-marker))) | |
2212 | (B-point (emerge-eval-in-buffer emerge-B-buffer | |
2213 | (point-marker))) | |
2214 | (merge-point (point-marker)) | |
2215 | (old-diff (aref emerge-difference-list n))) | |
2216 | ;; check location of the points, give error if they aren't in the | |
2217 | ;; differences | |
2218 | (if (or (< A-point (aref old-diff 0)) | |
2219 | (> A-point (aref old-diff 1))) | |
2220 | (error "Point outside of difference in A buffer")) | |
2221 | (if (or (< B-point (aref old-diff 2)) | |
2222 | (> B-point (aref old-diff 3))) | |
2223 | (error "Point outside of difference in B buffer")) | |
2224 | (if (or (< merge-point (aref old-diff 4)) | |
2225 | (> merge-point (aref old-diff 5))) | |
2226 | (error "Point outside of difference in merge buffer")) | |
2227 | ;; remove the flags | |
2228 | (emerge-unselect-difference emerge-current-difference) | |
2229 | ;; increment total number of differences | |
2230 | (setq emerge-number-of-differences (1+ emerge-number-of-differences)) | |
2231 | ;; build new differences vector | |
2232 | (let ((i 0) | |
2233 | (new-differences (make-vector emerge-number-of-differences nil))) | |
2234 | (while (< i emerge-number-of-differences) | |
2235 | (aset new-differences i | |
2236 | (cond | |
2237 | ((< i n) | |
2238 | (aref emerge-difference-list i)) | |
2239 | ((> i (1+ n)) | |
2240 | (aref emerge-difference-list (1- i))) | |
2241 | ((= i n) | |
2242 | (vector (aref old-diff 0) | |
2243 | A-point | |
2244 | (aref old-diff 2) | |
2245 | B-point | |
2246 | (aref old-diff 4) | |
2247 | merge-point | |
2248 | (aref old-diff 6))) | |
2249 | (t | |
2250 | (vector (copy-marker A-point) | |
2251 | (aref old-diff 1) | |
2252 | (copy-marker B-point) | |
2253 | (aref old-diff 3) | |
2254 | (copy-marker merge-point) | |
2255 | (aref old-diff 5) | |
2256 | (aref old-diff 6))))) | |
2257 | (setq i (1+ i))) | |
2258 | (setq emerge-difference-list new-differences)) | |
2259 | ;; set the current difference correctly | |
2260 | (setq emerge-current-difference n) | |
2261 | ;; fix the mode line | |
2262 | (emerge-refresh-mode-line) | |
2263 | ;; reinsert the flags | |
2264 | (emerge-select-difference emerge-current-difference) | |
2265 | (emerge-recenter)))) | |
2266 | ||
2267 | (defun emerge-trim-difference () | |
737e3892 RS |
2268 | "Trim lines off top and bottom of difference that are the same. |
2269 | If lines are the same in both the A and the B versions, strip them off. | |
2270 | \(This can happen when the A and B versions have common lines that the | |
2271 | ancestor version does not share.)" | |
3b4a6e27 JB |
2272 | (interactive) |
2273 | ;; make sure we are in a real difference | |
2274 | (emerge-validate-difference) | |
2275 | ;; remove the flags | |
2276 | (emerge-unselect-difference emerge-current-difference) | |
2277 | (let* ((diff (aref emerge-difference-list emerge-current-difference)) | |
2278 | (top-a (marker-position (aref diff 0))) | |
2279 | (bottom-a (marker-position (aref diff 1))) | |
2280 | (top-b (marker-position (aref diff 2))) | |
2281 | (bottom-b (marker-position (aref diff 3))) | |
2282 | (top-m (marker-position (aref diff 4))) | |
2283 | (bottom-m (marker-position (aref diff 5))) | |
2284 | size success sa sb sm) | |
2285 | ;; move down the tops of the difference regions as much as possible | |
2286 | ;; Try advancing comparing 1000 chars at a time. | |
2287 | ;; When that fails, go 500 chars at a time, and so on. | |
2288 | (setq size 1000) | |
2289 | (while (> size 0) | |
2290 | (setq success t) | |
2291 | (while success | |
2292 | (setq size (min size (- bottom-a top-a) (- bottom-b top-b) | |
2293 | (- bottom-m top-m))) | |
2294 | (setq sa (emerge-eval-in-buffer emerge-A-buffer | |
2295 | (buffer-substring top-a | |
2296 | (+ size top-a)))) | |
2297 | (setq sb (emerge-eval-in-buffer emerge-B-buffer | |
2298 | (buffer-substring top-b | |
2299 | (+ size top-b)))) | |
2300 | (setq sm (buffer-substring top-m (+ size top-m))) | |
2301 | (setq success (and (> size 0) (equal sa sb) (equal sb sm))) | |
2302 | (if success | |
2303 | (setq top-a (+ top-a size) | |
2304 | top-b (+ top-b size) | |
2305 | top-m (+ top-m size)))) | |
2306 | (setq size (/ size 2))) | |
2307 | ;; move up the bottoms of the difference regions as much as possible | |
2308 | ;; Try advancing comparing 1000 chars at a time. | |
2309 | ;; When that fails, go 500 chars at a time, and so on. | |
2310 | (setq size 1000) | |
2311 | (while (> size 0) | |
2312 | (setq success t) | |
2313 | (while success | |
2314 | (setq size (min size (- bottom-a top-a) (- bottom-b top-b) | |
2315 | (- bottom-m top-m))) | |
2316 | (setq sa (emerge-eval-in-buffer emerge-A-buffer | |
2317 | (buffer-substring (- bottom-a size) | |
2318 | bottom-a))) | |
2319 | (setq sb (emerge-eval-in-buffer emerge-B-buffer | |
2320 | (buffer-substring (- bottom-b size) | |
2321 | bottom-b))) | |
2322 | (setq sm (buffer-substring (- bottom-m size) bottom-m)) | |
2323 | (setq success (and (> size 0) (equal sa sb) (equal sb sm))) | |
2324 | (if success | |
2325 | (setq bottom-a (- bottom-a size) | |
2326 | bottom-b (- bottom-b size) | |
2327 | bottom-m (- bottom-m size)))) | |
2328 | (setq size (/ size 2))) | |
2329 | ;; {top,bottom}-{a,b,m} are now set at the new beginnings and ends | |
2330 | ;; of the difference regions. Move them to the beginning of lines, as | |
2331 | ;; appropriate. | |
2332 | (emerge-eval-in-buffer emerge-A-buffer | |
2333 | (goto-char top-a) | |
2334 | (beginning-of-line) | |
2335 | (aset diff 0 (point-marker)) | |
2336 | (goto-char bottom-a) | |
2337 | (beginning-of-line 2) | |
2338 | (aset diff 1 (point-marker))) | |
2339 | (emerge-eval-in-buffer emerge-B-buffer | |
2340 | (goto-char top-b) | |
2341 | (beginning-of-line) | |
2342 | (aset diff 2 (point-marker)) | |
2343 | (goto-char bottom-b) | |
2344 | (beginning-of-line 2) | |
2345 | (aset diff 3 (point-marker))) | |
2346 | (goto-char top-m) | |
2347 | (beginning-of-line) | |
2348 | (aset diff 4 (point-marker)) | |
2349 | (goto-char bottom-m) | |
2350 | (beginning-of-line 2) | |
2351 | (aset diff 5 (point-marker)) | |
2352 | ;; put the flags back in, recenter the display | |
2353 | (emerge-select-difference emerge-current-difference) | |
2354 | (emerge-recenter))) | |
2355 | ||
2356 | (defun emerge-find-difference (arg) | |
2357 | "Find the difference containing the current position of the point. | |
2358 | If there is no containing difference and the prefix argument is positive, | |
2359 | it finds the nearest following difference. A negative prefix argument finds | |
661d3230 | 2360 | the nearest previous difference." |
8bfce8a7 | 2361 | (interactive "P") |
661d3230 RS |
2362 | (cond ((eq (current-buffer) emerge-A-buffer) |
2363 | (emerge-find-difference-A arg)) | |
2364 | ((eq (current-buffer) emerge-B-buffer) | |
2365 | (emerge-find-difference-B arg)) | |
2366 | (t (emerge-find-difference-merge arg)))) | |
2367 | ||
2368 | (defun emerge-find-difference-merge (arg) | |
2369 | "Find the difference containing point, in the merge buffer. | |
2370 | If there is no containing difference and the prefix argument is positive, | |
2371 | it finds the nearest following difference. A negative prefix argument finds | |
3b4a6e27 JB |
2372 | the nearest previous difference." |
2373 | (interactive "P") | |
2374 | ;; search for the point in the merge buffer, using the markers | |
2375 | ;; for the beginning and end of the differences in the merge buffer | |
2376 | (emerge-find-difference1 arg (point) 4 5)) | |
2377 | ||
2378 | (defun emerge-find-difference-A (arg) | |
661d3230 | 2379 | "Find the difference containing point, in the A buffer. |
737e3892 | 2380 | This command must be executed in the merge buffer. |
3b4a6e27 JB |
2381 | If there is no containing difference and the prefix argument is positive, |
2382 | it finds the nearest following difference. A negative prefix argument finds | |
2383 | the nearest previous difference." | |
2384 | (interactive "P") | |
2385 | ;; search for the point in the A buffer, using the markers | |
2386 | ;; for the beginning and end of the differences in the A buffer | |
2387 | (emerge-find-difference1 arg | |
2388 | (emerge-eval-in-buffer emerge-A-buffer (point)) | |
2389 | 0 1)) | |
2390 | ||
2391 | (defun emerge-find-difference-B (arg) | |
661d3230 | 2392 | "Find the difference containing point, in the B buffer. |
737e3892 | 2393 | This command must be executed in the merge buffer. |
3b4a6e27 JB |
2394 | If there is no containing difference and the prefix argument is positive, |
2395 | it finds the nearest following difference. A negative prefix argument finds | |
2396 | the nearest previous difference." | |
2397 | (interactive "P") | |
2398 | ;; search for the point in the B buffer, using the markers | |
2399 | ;; for the beginning and end of the differences in the B buffer | |
2400 | (emerge-find-difference1 arg | |
2401 | (emerge-eval-in-buffer emerge-B-buffer (point)) | |
2402 | 2 3)) | |
2403 | ||
2404 | (defun emerge-find-difference1 (arg location begin end) | |
2405 | (let* ((index | |
2406 | ;; find first difference containing or after the current position | |
2407 | (catch 'search | |
2408 | (let ((n 0)) | |
2409 | (while (< n emerge-number-of-differences) | |
2410 | (let ((diff-vector (aref emerge-difference-list n))) | |
2411 | (if (<= location (marker-position (aref diff-vector end))) | |
2412 | (throw 'search n))) | |
2413 | (setq n (1+ n)))) | |
2414 | emerge-number-of-differences)) | |
2415 | (contains | |
2416 | ;; whether the found difference contains the current position | |
2417 | (and (< index emerge-number-of-differences) | |
2418 | (<= (marker-position (aref (aref emerge-difference-list index) | |
2419 | begin)) | |
2420 | location))) | |
2421 | (arg-value | |
2422 | ;; numeric value of prefix argument | |
2423 | (prefix-numeric-value arg))) | |
2424 | (emerge-unselect-and-select-difference | |
2425 | (cond | |
2426 | ;; if the point is in a difference, select it | |
2427 | (contains index) | |
2428 | ;; if the arg is nil and the point is not in a difference, error | |
2429 | ((null arg) (error "No difference contains point")) | |
2430 | ;; if the arg is positive, select the following difference | |
2431 | ((> arg-value 0) | |
2432 | (if (< index emerge-number-of-differences) | |
2433 | index | |
2434 | (error "No difference contains or follows point"))) | |
eb8c3be9 | 2435 | ;; if the arg is negative, select the preceding difference |
3b4a6e27 JB |
2436 | (t |
2437 | (if (> index 0) | |
2438 | (1- index) | |
eb8c3be9 | 2439 | (error "No difference contains or precedes point"))))))) |
3b4a6e27 JB |
2440 | |
2441 | (defun emerge-line-numbers () | |
737e3892 RS |
2442 | "Display the current line numbers. |
2443 | This function displays the line numbers of the points in the A, B, and | |
3b4a6e27 JB |
2444 | merge buffers." |
2445 | (interactive) | |
2446 | (let* ((valid-diff | |
2447 | (and (>= emerge-current-difference 0) | |
2448 | (< emerge-current-difference emerge-number-of-differences))) | |
2449 | (diff (and valid-diff | |
2450 | (aref emerge-difference-list emerge-current-difference))) | |
2451 | (merge-line (emerge-line-number-in-buf 4 5)) | |
2452 | (A-line (emerge-eval-in-buffer emerge-A-buffer | |
2453 | (emerge-line-number-in-buf 0 1))) | |
2454 | (B-line (emerge-eval-in-buffer emerge-B-buffer | |
2455 | (emerge-line-number-in-buf 2 3)))) | |
2456 | (message "At lines: merge = %d, A = %d, B = %d" | |
2457 | merge-line A-line B-line))) | |
2458 | ||
2459 | (defun emerge-line-number-in-buf (begin-marker end-marker) | |
2460 | (let (temp) | |
2461 | (setq temp (save-excursion | |
2462 | (beginning-of-line) | |
2463 | (1+ (count-lines 1 (point))))) | |
2464 | (if valid-diff | |
2465 | (progn | |
2466 | (if (> (point) (aref diff begin-marker)) | |
2467 | (setq temp (- temp emerge-before-flag-lines))) | |
2468 | (if (> (point) (aref diff end-marker)) | |
2469 | (setq temp (- temp emerge-after-flag-lines))))) | |
2470 | temp)) | |
2471 | ||
ff5f6ddd RS |
2472 | (defun emerge-set-combine-template (string &optional localize) |
2473 | "Set `emerge-combine-versions-template' to STRING. | |
2474 | This value controls how `emerge-combine-versions' combines the two versions. | |
2475 | With prefix argument, `emerge-combine-versions-template' is made local to this | |
2476 | merge buffer. Localization is permanent for any particular merge buffer." | |
2477 | (interactive "s\nP") | |
2478 | (if localize | |
2479 | (make-local-variable 'emerge-combine-versions-template)) | |
2480 | (setq emerge-combine-versions-template string) | |
2481 | (message | |
2482 | (if (assq 'emerge-combine-versions-template (buffer-local-variables)) | |
2483 | "emerge-set-combine-versions-template set locally" | |
2484 | "emerge-set-combine-versions-template set"))) | |
2485 | ||
3b4a6e27 | 2486 | (defun emerge-set-combine-versions-template (start end &optional localize) |
737e3892 RS |
2487 | "Copy region into `emerge-combine-versions-template'. |
2488 | This controls how `emerge-combine-versions' will combine the two versions. | |
ff5f6ddd | 2489 | With prefix argument, `emerge-combine-versions-template' is made local to this |
3b4a6e27 JB |
2490 | merge buffer. Localization is permanent for any particular merge buffer." |
2491 | (interactive "r\nP") | |
2492 | (if localize | |
2493 | (make-local-variable 'emerge-combine-versions-template)) | |
2494 | (setq emerge-combine-versions-template (buffer-substring start end)) | |
2495 | (message | |
2496 | (if (assq 'emerge-combine-versions-template (buffer-local-variables)) | |
2497 | "emerge-set-combine-versions-template set locally." | |
2498 | "emerge-set-combine-versions-template set."))) | |
2499 | ||
2500 | (defun emerge-combine-versions (&optional force) | |
737e3892 | 2501 | "Combine versions using the template in `emerge-combine-versions-template'. |
3b4a6e27 JB |
2502 | Refuses to function if this difference has been edited, i.e., if it is |
2503 | neither the A nor the B variant. | |
737e3892 | 2504 | An argument forces the variant to be selected even if the difference has |
3b4a6e27 JB |
2505 | been edited." |
2506 | (interactive "P") | |
2507 | (emerge-combine-versions-internal emerge-combine-versions-template force)) | |
2508 | ||
2509 | (defun emerge-combine-versions-register (char &optional force) | |
2510 | "Combine the two versions using the template in register REG. | |
737e3892 | 2511 | See documentation of the variable `emerge-combine-versions-template' |
3b4a6e27 JB |
2512 | for how the template is interpreted. |
2513 | Refuses to function if this difference has been edited, i.e., if it is | |
2514 | neither the A nor the B variant. | |
737e3892 | 2515 | An argument forces the variant to be selected even if the difference has |
3b4a6e27 JB |
2516 | been edited." |
2517 | (interactive "cRegister containing template: \nP") | |
2518 | (let ((template (get-register char))) | |
2519 | (if (not (stringp template)) | |
2520 | (error "Register does not contain text")) | |
2521 | (emerge-combine-versions-internal template force))) | |
2522 | ||
2523 | (defun emerge-combine-versions-internal (template force) | |
2524 | (let ((operate | |
2525 | (function (lambda () | |
2526 | (emerge-combine-versions-edit merge-begin merge-end | |
2527 | A-begin A-end B-begin B-end) | |
2528 | (if emerge-auto-advance | |
2529 | (emerge-next-difference)))))) | |
2530 | (emerge-select-version force operate operate operate))) | |
2531 | ||
2532 | (defun emerge-combine-versions-edit (merge-begin merge-end | |
2533 | A-begin A-end B-begin B-end) | |
2534 | (emerge-eval-in-buffer | |
2535 | emerge-merge-buffer | |
2536 | (delete-region merge-begin merge-end) | |
2537 | (goto-char merge-begin) | |
2538 | (let ((i 0)) | |
2539 | (while (< i (length template)) | |
2540 | (let ((c (aref template i))) | |
2541 | (if (= c ?%) | |
2542 | (progn | |
2543 | (setq i (1+ i)) | |
2544 | (setq c | |
2545 | (condition-case nil | |
2546 | (aref template i) | |
2547 | (error ?%))) | |
2548 | (cond ((= c ?a) | |
2549 | (insert-buffer-substring emerge-A-buffer A-begin A-end)) | |
2550 | ((= c ?b) | |
2551 | (insert-buffer-substring emerge-B-buffer B-begin B-end)) | |
2552 | ((= c ?%) | |
737e3892 RS |
2553 | (insert ?%)) |
2554 | (t | |
2555 | (insert c)))) | |
3b4a6e27 JB |
2556 | (insert c))) |
2557 | (setq i (1+ i)))) | |
2558 | (goto-char merge-begin) | |
2559 | (aset diff-vector 6 'combined) | |
2560 | (emerge-refresh-mode-line))) | |
2561 | ||
2562 | (defun emerge-set-merge-mode (mode) | |
737e3892 RS |
2563 | "Set the major mode in a merge buffer. |
2564 | Overrides any change that the mode might make to the mode line or local | |
2565 | keymap. Leaves merge in fast mode." | |
3b4a6e27 JB |
2566 | (interactive |
2567 | (list (intern (completing-read "New major mode for merge buffer: " | |
2568 | obarray 'commandp t nil)))) | |
2569 | (funcall mode) | |
2570 | (emerge-refresh-mode-line) | |
2571 | (if emerge-fast-mode | |
2572 | (emerge-fast-mode) | |
2573 | (emerge-edit-mode))) | |
2574 | ||
2575 | (defun emerge-one-line-window () | |
2576 | (interactive) | |
2577 | (let ((window-min-height 1)) | |
2578 | (shrink-window (- (window-height) 2)))) | |
2579 | ||
2580 | ;;; Support routines | |
2581 | ||
2582 | ;; Select a difference by placing the visual flags around the appropriate | |
2583 | ;; group of lines in the A, B, and merge buffers | |
2584 | (defun emerge-select-difference (n) | |
151e4b9c RS |
2585 | (let ((emerge-globalized-difference-list emerge-difference-list) |
2586 | (emerge-globalized-number-of-differences emerge-number-of-differences)) | |
2587 | (emerge-place-flags-in-buffer emerge-A-buffer n 0 1) | |
2588 | (emerge-place-flags-in-buffer emerge-B-buffer n 2 3) | |
2589 | (emerge-place-flags-in-buffer nil n 4 5)) | |
737e3892 | 2590 | (run-hooks 'emerge-select-hook)) |
151e4b9c RS |
2591 | |
2592 | (defun emerge-place-flags-in-buffer (buffer difference before-index | |
2593 | after-index) | |
2594 | (if buffer | |
2595 | (emerge-eval-in-buffer | |
2596 | buffer | |
2597 | (emerge-place-flags-in-buffer1 difference before-index after-index)) | |
2598 | (emerge-place-flags-in-buffer1 difference before-index after-index))) | |
2599 | ||
2600 | (defun emerge-place-flags-in-buffer1 (difference before-index after-index) | |
3b4a6e27 | 2601 | (let ((buffer-read-only nil)) |
151e4b9c RS |
2602 | ;; insert the flag before the difference |
2603 | (let ((before (aref (aref emerge-globalized-difference-list difference) | |
2604 | before-index)) | |
2605 | here) | |
2606 | (goto-char before) | |
2607 | ;; insert the flag itself | |
2608 | (insert-before-markers emerge-before-flag) | |
2609 | (setq here (point)) | |
2610 | ;; Put the marker(s) referring to this position 1 character before the | |
2611 | ;; end of the flag, so it won't be damaged by the user. | |
2612 | ;; This gets a bit tricky, as there could be a number of markers | |
2613 | ;; that have to be moved. | |
2614 | (set-marker before (1- before)) | |
2615 | (let ((n (1- difference)) after-marker before-marker diff-list) | |
2616 | (while (and | |
2617 | (>= n 0) | |
2618 | (progn | |
2619 | (setq diff-list (aref emerge-globalized-difference-list n) | |
2620 | after-marker (aref diff-list after-index)) | |
2621 | (= after-marker here))) | |
2622 | (set-marker after-marker (1- after-marker)) | |
2623 | (setq before-marker (aref diff-list before-index)) | |
2624 | (if (= before-marker here) | |
2625 | (setq before-marker (1- before-marker))) | |
2626 | (setq n (1- n))))) | |
2627 | ;; insert the flag after the difference | |
2628 | (let* ((after (aref (aref emerge-globalized-difference-list difference) | |
2629 | after-index)) | |
2630 | (here (marker-position after))) | |
2631 | (goto-char here) | |
2632 | ;; insert the flag itself | |
2633 | (insert emerge-after-flag) | |
2634 | ;; Put the marker(s) referring to this position 1 character after the | |
2635 | ;; beginning of the flag, so it won't be damaged by the user. | |
2636 | ;; This gets a bit tricky, as there could be a number of markers | |
2637 | ;; that have to be moved. | |
2638 | (set-marker after (1+ after)) | |
2639 | (let ((n (1+ difference)) before-marker after-marker diff-list) | |
2640 | (while (and | |
2641 | (< n emerge-globalized-number-of-differences) | |
2642 | (progn | |
2643 | (setq diff-list (aref emerge-globalized-difference-list n) | |
2644 | before-marker (aref diff-list before-index)) | |
2645 | (= before-marker here))) | |
2646 | (set-marker before-marker (1+ before-marker)) | |
2647 | (setq after-marker (aref diff-list after-index)) | |
2648 | (if (= after-marker here) | |
2649 | (setq after-marker (1+ after-marker))) | |
2650 | (setq n (1+ n))))))) | |
3b4a6e27 JB |
2651 | |
2652 | ;; Unselect a difference by removing the visual flags in the buffers. | |
2653 | (defun emerge-unselect-difference (n) | |
2654 | (let ((diff-vector (aref emerge-difference-list n))) | |
2655 | (emerge-remove-flags-in-buffer emerge-A-buffer | |
2656 | (aref diff-vector 0) (aref diff-vector 1)) | |
2657 | (emerge-remove-flags-in-buffer emerge-B-buffer | |
2658 | (aref diff-vector 2) (aref diff-vector 3)) | |
2659 | (emerge-remove-flags-in-buffer emerge-merge-buffer | |
151e4b9c | 2660 | (aref diff-vector 4) (aref diff-vector 5))) |
737e3892 | 2661 | (run-hooks 'emerge-unselect-hook)) |
3b4a6e27 JB |
2662 | |
2663 | (defun emerge-remove-flags-in-buffer (buffer before after) | |
2664 | (emerge-eval-in-buffer | |
2665 | buffer | |
2666 | (let ((buffer-read-only nil)) | |
151e4b9c RS |
2667 | ;; remove the flags, if they're there |
2668 | (goto-char (- before (1- emerge-before-flag-length))) | |
3b4a6e27 JB |
2669 | (if (looking-at emerge-before-flag-match) |
2670 | (delete-char emerge-before-flag-length) | |
2671 | ;; the flag isn't there | |
2672 | (ding) | |
737e3892 | 2673 | (message "Trouble removing flag")) |
151e4b9c | 2674 | (goto-char (1- after)) |
3b4a6e27 JB |
2675 | (if (looking-at emerge-after-flag-match) |
2676 | (delete-char emerge-after-flag-length) | |
2677 | ;; the flag isn't there | |
2678 | (ding) | |
737e3892 | 2679 | (message "Trouble removing flag"))))) |
3b4a6e27 | 2680 | |
151e4b9c | 2681 | ;; Select a difference, removing any flags that exist now. |
3b4a6e27 JB |
2682 | (defun emerge-unselect-and-select-difference (n &optional suppress-display) |
2683 | (if (and (>= emerge-current-difference 0) | |
2684 | (< emerge-current-difference emerge-number-of-differences)) | |
2685 | (emerge-unselect-difference emerge-current-difference)) | |
2686 | (if (and (>= n 0) (< n emerge-number-of-differences)) | |
2687 | (progn | |
2688 | (emerge-select-difference n) | |
2689 | (let* ((diff-vector (aref emerge-difference-list n)) | |
2690 | (selection-type (aref diff-vector 6))) | |
2691 | (if (eq selection-type 'default-A) | |
2692 | (aset diff-vector 6 'A) | |
2693 | (if (eq selection-type 'default-B) | |
2694 | (aset diff-vector 6 'B)))))) | |
2695 | (setq emerge-current-difference n) | |
2696 | (if (not suppress-display) | |
2697 | (progn | |
2698 | (emerge-recenter) | |
2699 | (emerge-refresh-mode-line)))) | |
2700 | ||
2701 | ;; Perform tests to see whether user should be allowed to select a version | |
2702 | ;; of this difference: | |
2703 | ;; a valid difference has been selected; and | |
2704 | ;; the difference text in the merge buffer is: | |
2705 | ;; the A version (execute a-version), or | |
2706 | ;; the B version (execute b-version), or | |
2707 | ;; empty (execute neither-version), or | |
2708 | ;; argument FORCE is true (execute neither-version) | |
2709 | ;; Otherwise, signal an error. | |
2710 | (defun emerge-select-version (force a-version b-version neither-version) | |
2711 | (emerge-validate-difference) | |
2712 | (let ((buffer-read-only nil)) | |
2713 | (let* ((diff-vector | |
2714 | (aref emerge-difference-list emerge-current-difference)) | |
2715 | (A-begin (1+ (aref diff-vector 0))) | |
2716 | (A-end (1- (aref diff-vector 1))) | |
2717 | (B-begin (1+ (aref diff-vector 2))) | |
2718 | (B-end (1- (aref diff-vector 3))) | |
2719 | (merge-begin (1+ (aref diff-vector 4))) | |
2720 | (merge-end (1- (aref diff-vector 5)))) | |
2721 | (if (emerge-compare-buffers emerge-A-buffer A-begin A-end | |
2722 | emerge-merge-buffer merge-begin | |
2723 | merge-end) | |
2724 | (funcall a-version) | |
2725 | (if (emerge-compare-buffers emerge-B-buffer B-begin B-end | |
2726 | emerge-merge-buffer merge-begin | |
2727 | merge-end) | |
2728 | (funcall b-version) | |
2729 | (if (or force (= merge-begin merge-end)) | |
2730 | (funcall neither-version) | |
151e4b9c RS |
2731 | (error "This difference region has been edited"))))))) |
2732 | ||
2733 | ;; Read a file name, handling all of the various defaulting rules. | |
2734 | ||
2735 | (defun emerge-read-file-name (prompt alternative-default-dir default-file | |
90371ec9 | 2736 | A-file must-match) |
737e3892 | 2737 | ;; `prompt' should not have trailing ": ", so that it can be modified |
151e4b9c RS |
2738 | ;; according to context. |
2739 | ;; If alternative-default-dir is non-nil, it should be used as the default | |
2740 | ;; directory instead if default-directory, if emerge-default-last-directories | |
2741 | ;; is set. | |
2742 | ;; If default-file is set, it should be used as the default value. | |
2743 | ;; If A-file is set, and its directory is different from | |
2744 | ;; alternative-default-dir, and if emerge-default-last-directories is set, | |
2745 | ;; the default file should be the last part of A-file in the default | |
2746 | ;; directory. (Overriding default-file.) | |
2747 | (cond | |
2748 | ;; If this is not the A-file argument (shown by non-nil A-file), and | |
2749 | ;; if emerge-default-last-directories is set, and | |
2750 | ;; the default directory exists but is not the same as the directory of the | |
2751 | ;; A-file, | |
2752 | ;; then make the default file have the same name as the A-file, but in | |
2753 | ;; the default directory. | |
2754 | ((and emerge-default-last-directories | |
2755 | A-file | |
2756 | alternative-default-dir | |
2757 | (not (string-equal alternative-default-dir | |
2758 | (file-name-directory A-file)))) | |
2759 | (read-file-name (format "%s (default %s): " | |
2760 | prompt (file-name-nondirectory A-file)) | |
2761 | alternative-default-dir | |
2762 | (concat alternative-default-dir | |
2763 | (file-name-nondirectory A-file)) | |
90371ec9 | 2764 | (and must-match 'confirm))) |
151e4b9c RS |
2765 | ;; If there is a default file, use it. |
2766 | (default-file | |
2767 | (read-file-name (format "%s (default %s): " prompt default-file) | |
2768 | ;; If emerge-default-last-directories is set, use the | |
2769 | ;; directory from the same argument of the last call of | |
2770 | ;; Emerge as the default for this argument. | |
2771 | (and emerge-default-last-directories | |
2772 | alternative-default-dir) | |
90371ec9 | 2773 | default-file (and must-match 'confirm))) |
151e4b9c RS |
2774 | (t |
2775 | (read-file-name (concat prompt ": ") | |
2776 | ;; If emerge-default-last-directories is set, use the | |
2777 | ;; directory from the same argument of the last call of | |
2778 | ;; Emerge as the default for this argument. | |
2779 | (and emerge-default-last-directories | |
2780 | alternative-default-dir) | |
90371ec9 | 2781 | nil (and must-match 'confirm))))) |
3b4a6e27 JB |
2782 | |
2783 | ;; Revise the mode line to display which difference we have selected | |
2784 | ||
2785 | (defun emerge-refresh-mode-line () | |
2786 | (setq mode-line-buffer-identification | |
2787 | (list (format "Emerge: %%b diff %d of %d%s" | |
2788 | (1+ emerge-current-difference) | |
2789 | emerge-number-of-differences | |
2790 | (if (and (>= emerge-current-difference 0) | |
2791 | (< emerge-current-difference | |
2792 | emerge-number-of-differences)) | |
2793 | (cdr (assq (aref (aref emerge-difference-list | |
2794 | emerge-current-difference) | |
2795 | 6) | |
2796 | '((A . " - A") | |
2797 | (B . " - B") | |
2798 | (prefer-A . " - A*") | |
2799 | (prefer-B . " - B*") | |
2800 | (combined . " - comb")))) | |
2801 | "")))) | |
ec165e56 | 2802 | (force-mode-line-update)) |
3b4a6e27 JB |
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 | |
a7acbbe4 | 2850 | ;; the second (when called with a value as an argument) sets the value. |
3b4a6e27 JB |
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)))) | |
62f72ce0 KH |
2990 | ;; (save-excursion |
2991 | ;; (set-buffer standard-output) | |
2992 | ;; (help-mode)) | |
737e3892 RS |
2993 | ;; (print-help-return-message))) |
2994 | ||
2995 | ;; This goes with the redefinition of describe-mode. | |
2996 | ;;;; Adjust things so that keyboard macro definitions are documented correctly. | |
2997 | ;;(fset 'defining-kbd-macro (symbol-function 'start-kbd-macro)) | |
2998 | ||
2999 | ;; substitute-key-definition should work now. | |
3000 | ;;;; Function to shadow a definition in a keymap with definitions in another. | |
3001 | ;;(defun emerge-shadow-key-definition (olddef newdef keymap shadowmap) | |
3002 | ;; "Shadow OLDDEF with NEWDEF for any keys in KEYMAP with entries in SHADOWMAP. | |
3003 | ;;In other words, SHADOWMAP will now shadow all definitions of OLDDEF in KEYMAP | |
3004 | ;;with NEWDEF. Does not affect keys that are already defined in SHADOWMAP, | |
3005 | ;;including those whose definition is OLDDEF." | |
3006 | ;; ;; loop through all keymaps accessible from keymap | |
3007 | ;; (let ((maps (accessible-keymaps keymap))) | |
3008 | ;; (while maps | |
3009 | ;; (let ((prefix (car (car maps))) | |
3010 | ;; (map (cdr (car maps)))) | |
3011 | ;; ;; examine a keymap | |
3012 | ;; (if (arrayp map) | |
3013 | ;; ;; array keymap | |
3014 | ;; (let ((len (length map)) | |
3015 | ;; (i 0)) | |
3016 | ;; (while (< i len) | |
3017 | ;; (if (eq (aref map i) olddef) | |
3018 | ;; ;; set the shadowing definition | |
3019 | ;; (let ((key (concat prefix (char-to-string i)))) | |
3020 | ;; (emerge-define-key-if-possible shadowmap key newdef))) | |
3021 | ;; (setq i (1+ i)))) | |
3022 | ;; ;; sparse keymap | |
3023 | ;; (while map | |
3024 | ;; (if (eq (cdr-safe (car-safe map)) olddef) | |
3025 | ;; ;; set the shadowing definition | |
3026 | ;; (let ((key | |
3027 | ;; (concat prefix (char-to-string (car (car map)))))) | |
3028 | ;; (emerge-define-key-if-possible shadowmap key newdef))) | |
3029 | ;; (setq map (cdr map))))) | |
3030 | ;; (setq maps (cdr maps))))) | |
3b4a6e27 JB |
3031 | |
3032 | ;; Define a key if it (or a prefix) is not already defined in the map. | |
3033 | (defun emerge-define-key-if-possible (keymap key definition) | |
3034 | ;; look up the present definition of the key | |
3035 | (let ((present (lookup-key keymap key))) | |
3036 | (if (integerp present) | |
3037 | ;; if it is "too long", look up the valid prefix | |
3038 | (if (not (lookup-key keymap (substring key 0 present))) | |
3039 | ;; if the prefix isn't defined, define it | |
3040 | (define-key keymap key definition)) | |
3041 | ;; if there is no present definition, define it | |
3042 | (if (not present) | |
3043 | (define-key keymap key definition))))) | |
3044 | ||
737e3892 RS |
3045 | ;; Ordinary substitute-key-definition should do this now. |
3046 | ;;(defun emerge-recursively-substitute-key-definition (olddef newdef keymap) | |
3047 | ;; "Like `substitute-key-definition', but act recursively on subkeymaps. | |
3048 | ;;Make sure that subordinate keymaps aren't shared with other keymaps! | |
3049 | ;;\(`copy-keymap' will suffice.)" | |
3050 | ;; ;; Loop through all keymaps accessible from keymap | |
3051 | ;; (let ((maps (accessible-keymaps keymap))) | |
3052 | ;; (while maps | |
3053 | ;; ;; Substitute in this keymap | |
3054 | ;; (substitute-key-definition olddef newdef (cdr (car maps))) | |
3055 | ;; (setq maps (cdr maps))))) | |
3b4a6e27 JB |
3056 | |
3057 | ;; Show the name of the file in the buffer. | |
3058 | (defun emerge-show-file-name () | |
3059 | "Displays the name of the file loaded into the current buffer. | |
3060 | If the name won't fit on one line, the minibuffer is expanded to hold it, | |
3061 | and the command waits for a keystroke from the user. If the keystroke is | |
3062 | SPC, it is ignored; if it is anything else, it is processed as a command." | |
3063 | (interactive) | |
3064 | (let ((name (buffer-file-name))) | |
3065 | (or name | |
3066 | (setq name "Buffer has no file name.")) | |
3067 | (save-window-excursion | |
3068 | (select-window (minibuffer-window)) | |
3069 | (erase-buffer) | |
3070 | (insert name) | |
3071 | (if (not (pos-visible-in-window-p)) | |
3072 | (let ((echo-keystrokes 0)) | |
3073 | (while (and (not (pos-visible-in-window-p)) | |
151e4b9c | 3074 | (> (1- (screen-height)) (window-height))) |
3b4a6e27 | 3075 | (enlarge-window 1)) |
737e3892 RS |
3076 | (let ((c (read-event))) |
3077 | (if (not (eq c 32)) | |
3078 | (setq unread-command-events (list c))))))))) | |
3b4a6e27 JB |
3079 | |
3080 | ;; Improved auto-save file names. | |
3081 | ;; This function fixes many problems with the standard auto-save file names: | |
3082 | ;; Auto-save files for non-file buffers get put in the default directory | |
3083 | ;; for the buffer, whether that makes sense or not. | |
3084 | ;; Auto-save files for file buffers get put in the directory of the file, | |
3085 | ;; regardless of whether we can write into it or not. | |
3086 | ;; Auto-save files for non-file buffers don't use the process id, so if a | |
3087 | ;; user runs more than on Emacs, they can make auto-save files that overwrite | |
3088 | ;; each other. | |
3089 | ;; To use this function, do: | |
3090 | ;; (fset 'make-auto-save-file-name | |
3091 | ;; (symbol-function 'emerge-make-auto-save-file-name)) | |
3092 | (defun emerge-make-auto-save-file-name () | |
3093 | "Return file name to use for auto-saves of current buffer. | |
737e3892 RS |
3094 | Does not consider `auto-save-visited-file-name'; |
3095 | that is checked before calling this function. | |
3b4a6e27 | 3096 | You can redefine this for customization. |
737e3892 | 3097 | See also `auto-save-file-name-p'." |
3b4a6e27 JB |
3098 | (if buffer-file-name |
3099 | ;; if buffer has a file, try the format <file directory>/#<file name># | |
3100 | (let ((f (concat (file-name-directory buffer-file-name) | |
3101 | "#" | |
3102 | (file-name-nondirectory buffer-file-name) | |
3103 | "#"))) | |
3104 | (if (file-writable-p f) | |
3105 | ;; the file is writable, so use it | |
3106 | f | |
3107 | ;; the file isn't writable, so use the format | |
3108 | ;; ~/#&<file name>&<hash of directory># | |
3109 | (concat (getenv "HOME") | |
3110 | "/#&" | |
3111 | (file-name-nondirectory buffer-file-name) | |
3112 | "&" | |
737e3892 | 3113 | (emerge-hash-string-into-string |
3b4a6e27 JB |
3114 | (file-name-directory buffer-file-name)) |
3115 | "#"))) | |
3116 | ;; if buffer has no file, use the format ~/#%<buffer name>%<process id># | |
3117 | (expand-file-name (concat (getenv "HOME") | |
3118 | "/#%" | |
3119 | ;; quote / into \! and \ into \\ | |
737e3892 | 3120 | (emerge-unslashify-name (buffer-name)) |
3b4a6e27 JB |
3121 | "%" |
3122 | (make-temp-name "") | |
3123 | "#")))) | |
3124 | ||
3125 | ;; Hash a string into five characters more-or-less suitable for use in a file | |
3126 | ;; name. (Allowed characters are ! through ~, except /.) | |
737e3892 | 3127 | (defun emerge-hash-string-into-string (s) |
3b4a6e27 JB |
3128 | (let ((bins (vector 0 0 0 0 0)) |
3129 | (i 0)) | |
3130 | (while (< i (length s)) | |
3131 | (aset bins (% i 5) (% (+ (* (aref bins (% i 5)) 35) | |
3132 | (aref s i)) | |
3133 | 65536)) | |
3134 | (setq i (1+ i))) | |
3135 | (mapconcat (function (lambda (b) | |
3136 | (setq b (+ (% b 93) ?!)) | |
3137 | (if (>= b ?/) | |
3138 | (setq b (1+ b))) | |
3139 | (char-to-string b))) | |
3140 | bins ""))) | |
3141 | ||
3142 | ;; Quote any /s in a string by replacing them with \!. | |
3143 | ;; Also, replace any \s by \\, to make it one-to-one. | |
737e3892 | 3144 | (defun emerge-unslashify-name (s) |
3b4a6e27 JB |
3145 | (let ((limit 0)) |
3146 | (while (string-match "[/\\]" s limit) | |
3147 | (setq s (concat (substring s 0 (match-beginning 0)) | |
3148 | (if (string= (substring s (match-beginning 0) | |
3149 | (match-end 0)) | |
3150 | "/") | |
3151 | "\\!" | |
3152 | "\\\\") | |
3153 | (substring s (match-end 0)))) | |
3154 | (setq limit (1+ (match-end 0))))) | |
3155 | s) | |
3156 | ||
151e4b9c RS |
3157 | ;; Metacharacters that have to be protected from the shell when executing |
3158 | ;; a diff/diff3 command. | |
3159 | (defvar emerge-metachars "[ \t\n!\"#$&'()*;<=>?[\\^`{|~]" | |
737e3892 RS |
3160 | "Characters that must be quoted with \\ when used in a shell command line. |
3161 | More precisely, a [...] regexp to match any one such character.") | |
151e4b9c RS |
3162 | |
3163 | ;; Quote metacharacters (using \) when executing a diff/diff3 command. | |
3164 | (defun emerge-protect-metachars (s) | |
3165 | (let ((limit 0)) | |
3166 | (while (string-match emerge-metachars s limit) | |
3167 | (setq s (concat (substring s 0 (match-beginning 0)) | |
3168 | "\\" | |
3169 | (substring s (match-beginning 0)))) | |
3170 | (setq limit (1+ (match-end 0))))) | |
3171 | s) | |
3b4a6e27 | 3172 | |
737e3892 RS |
3173 | (provide 'emerge) |
3174 | ||
3175 | ;;; emerge.el ends here |