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666fd2cc CY |
1 | ;;; inversion.el --- When you need something in version XX.XX |
2 | ||
acaf905b | 3 | ;;; Copyright (C) 2002-2003, 2005-2012 Free Software Foundation, Inc. |
666fd2cc CY |
4 | |
5 | ;; Author: Eric M. Ludlam <zappo@gnu.org> | |
6 | ;; Version: 0.2 | |
7 | ;; Keywords: OO, lisp | |
8 | ||
9 | ;; This file is part of GNU Emacs. | |
10 | ||
11 | ;; GNU Emacs is free software: you can redistribute it and/or modify | |
12 | ;; it under the terms of the GNU General Public License as published by | |
13 | ;; the Free Software Foundation, either version 3 of the License, or | |
14 | ;; (at your option) any later version. | |
15 | ||
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
22 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. | |
23 | ||
24 | ;;; Commentary: | |
25 | ;; | |
26 | ;; Keeping track of rapidly developing software is a tough thing to | |
27 | ;; do, especially if you want to have co-dependent packages which all | |
28 | ;; move at different rates. | |
29 | ;; | |
30 | ;; This library provides a framework for specifying version numbers | |
31 | ;; and (as side effect) have a flexible way of getting a desired feature set. | |
32 | ;; | |
33 | ;; If you would like to use this package to satisfy dependency replace this: | |
34 | ;; | |
35 | ;; (require 'spiffy) | |
36 | ;; | |
37 | ;; with this: | |
38 | ;; | |
39 | ;; (require 'inversion) | |
40 | ;; (inversion-require 'spiffy "1.0") | |
41 | ;; | |
42 | ;; If you feel the need to not throw errors, you can do this instead: | |
43 | ;; | |
44 | ;; (let ((err (inversion-test 'spiffy "1.0"))) | |
45 | ;; (if err (your-stuff-here))) | |
46 | ;; | |
47 | ;; If you new package (2.0) needs to make sure a load file from your | |
48 | ;; package is compatible, use this test: | |
49 | ;; | |
50 | ;; (if (not (inversion-reverse-test 'spiffy version-from-file)) | |
51 | ;; ;; Everything ok | |
52 | ;; (do stuff) | |
53 | ;; ;; Out of date | |
54 | ;; (import-old-code)) | |
55 | ;; | |
56 | ;; If you would like to make inversion optional, do this: | |
57 | ;; | |
58 | ;; (or (require 'inversion nil t) | |
59 | ;; (defun inversion-test (p v) | |
60 | ;; (string= v (symbol-value | |
61 | ;; (intern-soft (concat (symbol-string p) "-version")))))) | |
62 | ;; | |
63 | ;; Or modify to specify `inversion-require' instead. | |
64 | ;; | |
65 | ;; TODO: | |
66 | ;; Offer to download newer versions of a package. | |
67 | ||
68 | ;;; History: | |
69 | ;; | |
70 | ;; Sept 3, 2002: First general publication. | |
71 | ||
72 | ;;; Code: | |
73 | ||
74 | (defvar inversion-version "1.3" | |
75 | "Current version of InVersion.") | |
76 | ||
77 | (defvar inversion-incompatible-version "0.1alpha1" | |
78 | "An earlier release which is incompatible with this release.") | |
79 | ||
80 | (defconst inversion-decoders | |
81 | '( | |
67d3ffe4 CY |
82 | (alpha "^\\([0-9]+\\)\\.\\([0-9]+\\)\\s-*\\.?alpha\\([0-9]+\\)?$" 3) |
83 | (beta "^\\([0-9]+\\)\\.\\([0-9]+\\)\\s-*\\.?beta\\([0-9]+\\)?$" 3) | |
666fd2cc | 84 | (beta "^\\([0-9]+\\)\\.\\([0-9]+\\)\\s-*(beta\\([0-9]+\\)?)" 3) |
67d3ffe4 | 85 | (prerelease "^\\([0-9]+\\)\\.\\([0-9]+\\)\\s-*\\.?pre\\([0-9]+\\)?$" 3) |
666fd2cc CY |
86 | (full "^\\([0-9]+\\)\\.\\([0-9]+\\)$" 2) |
87 | (fullsingle "^\\([0-9]+\\)$" 1) | |
88 | (patch "^\\([0-9]+\\)\\.\\([0-9]+\\) (patch \\([0-9]+\\))" 3) | |
89 | (point "^\\([0-9]+\\)\\.\\([0-9]+\\)\\.\\([0-9]+\\)$" 3) | |
90 | (build "^\\([0-9]+\\)\\.\\([0-9]+\\)\\.\\([0-9]+\\).\\([0-9]+\\)$" 4) | |
91 | ) | |
92 | "List of decoders for version strings. | |
93 | Each decoder is of the form: | |
94 | ||
95 | ( RELEASE-TYPE REGEXP MAX ) | |
96 | ||
97 | RELEASE-TYPE is a symbol specifying something like `beta' or `alpha'. | |
98 | REGEXP is the regular expression to match a version string. | |
99 | MAX is the maximum number of match-numbers in the release number. | |
100 | Decoders must be ordered to decode least stable versions before the | |
101 | more stable ones.") | |
102 | ||
103 | ;;; Version Checking | |
104 | ;; | |
105 | (defun inversion-decode-version (version-string) | |
106 | "Decode VERSION-STRING into an encoded list. | |
107 | Return value is of the form: | |
108 | (RELEASE MAJOR MINOR ...) | |
109 | where RELEASE is a symbol such as `full', or `beta'." | |
110 | (let ((decoders inversion-decoders) | |
111 | (result nil)) | |
112 | (while (and decoders (not result)) | |
113 | (if (string-match (nth 1 (car decoders)) version-string) | |
114 | (let ((ver nil) | |
115 | (num-left (nth 2 (car decoders))) | |
116 | (count 1)) | |
117 | (while (<= count num-left) | |
118 | (setq ver (cons | |
119 | (if (match-beginning count) | |
120 | (string-to-number | |
121 | (substring version-string | |
122 | (match-beginning count) | |
123 | (match-end count))) | |
124 | 1) | |
125 | ver) | |
126 | count (1+ count))) | |
127 | (setq result (cons (caar decoders) (nreverse ver)))) | |
128 | (setq decoders (cdr decoders)))) | |
129 | result)) | |
130 | ||
131 | (defun inversion-package-version (package) | |
132 | "Return the decoded version for PACKAGE." | |
133 | (let ((ver (symbol-value | |
134 | (intern-soft | |
135 | (concat (symbol-name package) | |
136 | "-version")))) | |
137 | (code nil)) | |
138 | (unless ver | |
139 | (error "Package %S does not define %S-version" package package)) | |
140 | ;; Decode the code | |
141 | (setq code (inversion-decode-version ver)) | |
142 | (unless code | |
143 | (error "%S-version value cannot be decoded" package)) | |
144 | code)) | |
145 | ||
146 | (defun inversion-package-incompatibility-version (package) | |
147 | "Return the decoded incompatibility version for PACKAGE. | |
148 | The incompatibility version is specified by the programmer of | |
149 | a package when a package is not backward compatible. It is | |
150 | not an indication of new features or bug fixes." | |
151 | (let ((ver (symbol-value | |
152 | (intern-soft | |
153 | (concat (symbol-name package) | |
154 | "-incompatible-version"))))) | |
155 | (if (not ver) | |
156 | nil | |
157 | ;; Decode the code | |
158 | (inversion-decode-version ver)))) | |
159 | ||
160 | (defun inversion-recode (code) | |
161 | "Convert CODE into a string." | |
162 | (let ((r (nth 0 code)) ; release-type | |
163 | (n (nth 1 code)) ; main number | |
164 | (i (nth 2 code)) ; first increment | |
165 | (p (nth 3 code))) ; second increment | |
166 | (cond | |
167 | ((eq r 'full) | |
168 | (setq r "" p "")) | |
169 | ((eq r 'point) | |
170 | (setq r "."))) | |
171 | (format "%s.%s%s%s" n i r p))) | |
172 | ||
173 | (defun inversion-release-to-number (release-symbol) | |
174 | "Convert RELEASE-SYMBOL into a number." | |
175 | (let* ((ra (assoc release-symbol inversion-decoders)) | |
176 | (rn (- (length inversion-decoders) | |
177 | (length (member ra inversion-decoders))))) | |
178 | rn)) | |
179 | ||
180 | (defun inversion-= (ver1 ver2) | |
181 | "Return non-nil if VER1 is equal to VER2." | |
182 | (equal ver1 ver2)) | |
183 | ||
184 | (defun inversion-< (ver1 ver2) | |
185 | "Return non-nil if VER1 is less than VER2." | |
186 | (let ((v1-0 (inversion-release-to-number (nth 0 ver1))) | |
187 | (v1-1 (nth 1 ver1)) | |
188 | (v1-2 (nth 2 ver1)) | |
189 | (v1-3 (nth 3 ver1)) | |
190 | (v1-4 (nth 4 ver1)) | |
191 | ;; v2 | |
192 | (v2-0 (inversion-release-to-number (nth 0 ver2))) | |
193 | (v2-1 (nth 1 ver2)) | |
194 | (v2-2 (nth 2 ver2)) | |
195 | (v2-3 (nth 3 ver2)) | |
196 | (v2-4 (nth 4 ver2)) | |
197 | ) | |
198 | (or (and (= v1-0 v2-0) | |
199 | (= v1-1 v2-1) | |
200 | (= v1-2 v2-2) | |
201 | (= v1-3 v2-3) | |
c80e3b4a | 202 | v1-4 v2-4 ; all or nothing if elt - is = |
666fd2cc CY |
203 | (< v1-4 v2-4)) |
204 | (and (= v1-0 v2-0) | |
205 | (= v1-1 v2-1) | |
206 | (= v1-2 v2-2) | |
c80e3b4a | 207 | v1-3 v2-3 ; all or nothing if elt - is = |
666fd2cc CY |
208 | (< v1-3 v2-3)) |
209 | (and (= v1-1 v2-1) | |
210 | (< v1-2 v2-2)) | |
211 | (and (< v1-1 v2-1)) | |
212 | (and (< v1-0 v2-0) | |
213 | (= v1-1 v2-1) | |
214 | (= v1-2 v2-2) | |
215 | ) | |
216 | ))) | |
217 | ||
218 | (defun inversion-check-version (version incompatible-version | |
cd1181db | 219 | minimum &rest reserved) |
666fd2cc CY |
220 | "Check that a given version meets the minimum requirement. |
221 | VERSION, INCOMPATIBLE-VERSION and MINIMUM are of similar format to | |
222 | return entries of `inversion-decode-version', or a classic version | |
223 | string. INCOMPATIBLE-VERSION can be nil. | |
224 | RESERVED arguments are kept for a later use. | |
225 | Return: | |
cd1181db | 226 | - nil if everything is ok. |
666fd2cc CY |
227 | - 'outdated if VERSION is less than MINIMUM. |
228 | - 'incompatible if VERSION is not backward compatible with MINIMUM. | |
229 | - t if the check failed." | |
230 | (let ((code (if (stringp version) | |
231 | (inversion-decode-version version) | |
232 | version)) | |
233 | (req (if (stringp minimum) | |
234 | (inversion-decode-version minimum) | |
235 | minimum)) | |
236 | ) | |
237 | ;; Perform a test. | |
238 | (cond | |
239 | ((inversion-= code req) | |
240 | ;; Same version.. Yay! | |
241 | nil) | |
242 | ((inversion-< code req) | |
243 | ;; Version is too old! | |
244 | 'outdated) | |
245 | ((inversion-< req code) | |
246 | ;; Newer is installed. What to do? | |
247 | (let ((incompatible | |
248 | (if (stringp incompatible-version) | |
249 | (inversion-decode-version incompatible-version) | |
250 | incompatible-version))) | |
251 | (cond | |
252 | ((not incompatible) nil) | |
253 | ((or (inversion-= req incompatible) | |
254 | (inversion-< req incompatible)) | |
255 | ;; The requested version is = or < than what the package | |
256 | ;; maintainer says is incompatible. | |
257 | 'incompatible) | |
258 | ;; Things are ok. | |
259 | (t nil)))) | |
260 | ;; Check failed | |
261 | (t t)))) | |
262 | ||
263 | (defun inversion-test (package minimum &rest reserved) | |
264 | "Test that PACKAGE meets the MINIMUM version requirement. | |
265 | PACKAGE is a symbol, similar to what is passed to `require'. | |
266 | MINIMUM is of similar format to return entries of | |
267 | `inversion-decode-version', or a classic version string. | |
268 | RESERVED arguments are kept for a later user. | |
269 | This depends on the symbols `PACKAGE-version' and optionally | |
270 | `PACKAGE-incompatible-version' being defined in PACKAGE. | |
271 | Return nil if everything is ok. Return an error string otherwise." | |
272 | (let ((check (inversion-check-version | |
273 | (inversion-package-version package) | |
274 | (inversion-package-incompatibility-version package) | |
275 | minimum reserved))) | |
276 | (cond | |
277 | ((null check) | |
278 | ;; Same version.. Yay! | |
279 | nil) | |
280 | ((eq check 'outdated) | |
281 | ;; Version is too old! | |
282 | (format "You need to upgrade package %s to %s" package minimum)) | |
283 | ((eq check 'incompatible) | |
284 | ;; Newer is installed but the requested version is = or < than | |
285 | ;; what the package maintainer says is incompatible, then throw | |
286 | ;; that error. | |
287 | (format "Package %s version is not backward compatible with %s" | |
288 | package minimum)) | |
289 | ;; Check failed | |
290 | (t "Inversion version check failed.")))) | |
291 | ||
292 | (defun inversion-reverse-test (package oldversion &rest reserved) | |
293 | "Test that PACKAGE at OLDVERSION is still compatible. | |
294 | If something like a save file is loaded at OLDVERSION, this | |
295 | test will identify if OLDVERSION is compatible with the current version | |
296 | of PACKAGE. | |
297 | PACKAGE is a symbol, similar to what is passed to `require'. | |
298 | OLDVERSION is of similar format to return entries of | |
299 | `inversion-decode-version', or a classic version string. | |
300 | RESERVED arguments are kept for a later user. | |
301 | This depends on the symbols `PACKAGE-version' and optionally | |
302 | `PACKAGE-incompatible-version' being defined in PACKAGE. | |
303 | Return nil if everything is ok. Return an error string otherwise." | |
304 | (let ((check (inversion-check-version | |
305 | (inversion-package-version package) | |
306 | (inversion-package-incompatibility-version package) | |
307 | oldversion reserved))) | |
308 | (cond | |
309 | ((null check) | |
310 | ;; Same version.. Yay! | |
311 | nil) | |
312 | ((eq check 'outdated) | |
313 | ;; Version is too old! | |
314 | (format "Package %s version %s is not compatible with current version" | |
315 | package oldversion)) | |
316 | ((eq check 'incompatible) | |
317 | ;; Newer is installed but the requested version is = or < than | |
318 | ;; what the package maintainer says is incompatible, then throw | |
319 | ;; that error. | |
320 | (format "Package %s version is not backward compatible with %s" | |
321 | package oldversion)) | |
322 | ;; Check failed | |
323 | (t "Inversion version check failed.")))) | |
324 | ||
325 | (defun inversion-require (package version &optional file directory | |
326 | &rest reserved) | |
327 | "Declare that you need PACKAGE with at least VERSION. | |
328 | PACKAGE might be found in FILE. (See `require'.) | |
329 | Throws an error if VERSION is incompatible with what is installed. | |
330 | Optional argument DIRECTORY is a location where new versions of | |
331 | this tool can be located. If there is a versioning problem and | |
332 | DIRECTORY is provided, inversion will offer to download the file. | |
333 | Optional argument RESERVED is saved for later use." | |
334 | (require package file) | |
335 | (let ((err (inversion-test package version))) | |
336 | (when err | |
337 | (if directory | |
338 | (inversion-download-package-ask err package directory version) | |
339 | (error err))) | |
340 | ;; Return the package symbol that was required. | |
341 | package)) | |
342 | ||
343 | (defun inversion-require-emacs (emacs-ver xemacs-ver) | |
344 | "Declare that you need either EMACS-VER, or XEMACS-VER. | |
345 | Only checks one based on which kind of Emacs is being run." | |
346 | (let ((err (inversion-test 'emacs | |
347 | (if (featurep 'xemacs) | |
348 | xemacs-ver | |
349 | emacs-ver)))) | |
350 | (if err (error err) | |
351 | ;; Something nice... | |
352 | t))) | |
353 | ||
354 | (defconst inversion-find-data | |
355 | '("(def\\(var\\|const\\)\\s-+%s-%s\\s-+\"\\([^\"]+\\)" 2) | |
356 | "Regexp template and match data index of a version string.") | |
357 | ||
358 | (defun inversion-find-version (package) | |
359 | "Search for the version and incompatible version of PACKAGE. | |
360 | Does not load PACKAGE nor requires that it has been previously loaded. | |
361 | Search in the directories in `load-path' for a PACKAGE.el library. | |
362 | Visit the file found and search for the declarations of variables or | |
363 | constants `PACKAGE-version' and `PACKAGE-incompatible-version'. The | |
364 | value of these variables must be a version string. | |
365 | ||
366 | Return a pair (VERSION-STRING . INCOMPATIBLE-VERSION-STRING) where | |
367 | INCOMPATIBLE-VERSION-STRING can be nil. | |
368 | Return nil when VERSION-STRING was not found." | |
369 | (let* ((file (locate-library (format "%s.el" package) t)) | |
370 | (tag (car inversion-find-data)) | |
371 | (idx (nth 1 inversion-find-data)) | |
372 | version) | |
373 | (when file | |
374 | (with-temp-buffer | |
375 | ;; The 3000 is a bit arbitrary, but should cut down on | |
376 | ;; fileio as version info usually is at the very top | |
cd1181db | 377 | ;; of a file. After a long commentary could be bad. |
666fd2cc CY |
378 | (insert-file-contents-literally file nil 0 3000) |
379 | (goto-char (point-min)) | |
380 | (when (re-search-forward (format tag package 'version) nil t) | |
381 | (setq version (list (match-string idx))) | |
382 | (goto-char (point-min)) | |
383 | (when (re-search-forward | |
384 | (format tag package 'incompatible-version) nil t) | |
385 | (setcdr version (match-string idx)))))) | |
386 | version)) | |
387 | ||
388 | (defun inversion-add-to-load-path (package minimum | |
389 | &optional installdir | |
390 | &rest subdirs) | |
391 | "Add the PACKAGE path to `load-path' if necessary. | |
392 | MINIMUM is the minimum version requirement of PACKAGE. | |
393 | Optional argument INSTALLDIR is the base directory where PACKAGE is | |
394 | installed. It defaults to `default-directory'/PACKAGE. | |
395 | SUBDIRS are sub-directories to add to `load-path', following the main | |
396 | INSTALLDIR path." | |
397 | (let ((ver (inversion-find-version package))) | |
398 | ;; If PACKAGE not found or a bad version already in `load-path', | |
399 | ;; prepend the new PACKAGE path, so it will be loaded first. | |
400 | (when (or (not ver) | |
401 | (and | |
402 | (inversion-check-version (car ver) (cdr ver) minimum) | |
403 | (message "Outdated %s %s shadowed to meet minimum version %s" | |
404 | package (car ver) minimum) | |
405 | t)) | |
406 | (let* ((default-directory | |
407 | (or installdir | |
408 | (expand-file-name (format "./%s" package)))) | |
409 | subdir) | |
410 | (when (file-directory-p default-directory) | |
411 | ;; Add SUBDIRS | |
412 | (while subdirs | |
413 | (setq subdir (expand-file-name (car subdirs)) | |
414 | subdirs (cdr subdirs)) | |
415 | (when (file-directory-p subdir) | |
416 | ;;(message "%S added to `load-path'" subdir) | |
417 | (add-to-list 'load-path subdir))) | |
418 | ;; Add the main path | |
419 | ;;(message "%S added to `load-path'" default-directory) | |
420 | (add-to-list 'load-path default-directory)) | |
421 | ;; We get to this point iff we do not accept or there is no | |
c7015153 | 422 | ;; system file. Let's check the version of what we just |
666fd2cc CY |
423 | ;; installed... just to be safe. |
424 | (let ((newver (inversion-find-version package))) | |
425 | (if (not newver) | |
426 | (error "Failed to find version for newly installed %s" | |
427 | package)) | |
428 | (if (inversion-check-version (car newver) (cdr newver) minimum) | |
429 | (error "Outdated %s %s just installed" package (car newver))) | |
430 | ))))) | |
431 | ||
432 | ;;; URL and downloading code | |
433 | ;; | |
434 | (defun inversion-locate-package-files (package directory &optional version) | |
435 | "Get a list of distributions of PACKAGE from DIRECTORY. | |
436 | DIRECTORY can be an ange-ftp compatible filename, such as: | |
437 | \"/ftp@ftp1.sourceforge.net/pub/sourceforge/PACKAGE\" | |
438 | If it is a URL, wget will be used for download. | |
439 | Optional argument VERSION will restrict the list of available versions | |
440 | to the file matching VERSION exactly, or nil." | |
441 | ;;DIRECTORY should also allow a URL: | |
442 | ;; \"http://ftp1.sourceforge.net/PACKAGE\" | |
443 | ;; but then I can get file listings easily. | |
444 | (if (symbolp package) (setq package (symbol-name package))) | |
445 | (directory-files directory t | |
446 | (if version | |
447 | (concat "^" package "-" version "\\>") | |
448 | package))) | |
449 | ||
450 | (defvar inversion-package-common-tails '( ".tar.gz" | |
451 | ".tar" | |
452 | ".zip" | |
453 | ".gz" | |
454 | ) | |
455 | "Common distribution mechanisms for Emacs Lisp packages.") | |
456 | ||
457 | (defun inversion-locate-package-files-and-split (package directory &optional version) | |
458 | "Use `inversion-locate-package-files' to get a list of PACKAGE files. | |
459 | DIRECTORY is the location where distributions of PACKAGE are. | |
460 | VERSION is an optional argument specifying a version to restrict to. | |
461 | The return list is an alist with the version string in the CAR, | |
462 | and the full path name in the CDR." | |
463 | (if (symbolp package) (setq package (symbol-name package))) | |
464 | (let ((f (inversion-locate-package-files package directory version)) | |
465 | (out nil)) | |
466 | (while f | |
467 | (let* ((file (car f)) | |
468 | (dist (file-name-nondirectory file)) | |
469 | (tails inversion-package-common-tails) | |
470 | (verstring nil)) | |
471 | (while (and tails (not verstring)) | |
472 | (when (string-match (concat (car tails) "$") dist) | |
473 | (setq verstring | |
474 | (substring dist (1+ (length package)) (match-beginning 0)))) | |
475 | (setq tails (cdr tails))) | |
476 | (if (not verstring) | |
477 | (error "Cannot decode version for %s" dist)) | |
478 | (setq out | |
479 | (cons | |
480 | (cons verstring file) | |
481 | out)) | |
482 | (setq f (cdr f)))) | |
483 | out)) | |
484 | ||
485 | (defun inversion-download-package-ask (err package directory version) | |
486 | "Due to ERR, offer to download PACKAGE from DIRECTORY. | |
487 | The package should have VERSION available for download." | |
488 | (if (symbolp package) (setq package (symbol-name package))) | |
489 | (let ((files (inversion-locate-package-files-and-split | |
490 | package directory version))) | |
491 | (if (not files) | |
492 | (error err) | |
493 | (if (not (y-or-n-p (concat err ": Download update? "))) | |
494 | (error err) | |
495 | (let ((dest (read-directory-name (format "Download %s to: " | |
496 | package) | |
497 | t))) | |
498 | (if (> (length files) 1) | |
499 | (setq files | |
500 | (list | |
501 | "foo" ;; ignored | |
502 | (read-file-name "Version to download: " | |
503 | directory | |
504 | files | |
505 | t | |
506 | (concat | |
507 | (file-name-as-directory directory) | |
508 | package) | |
509 | nil)))) | |
510 | ||
511 | (copy-file (cdr (car files)) dest)))))) | |
512 | ||
513 | ;;; How we upgrade packages in Emacs has yet to be ironed out. | |
514 | ||
515 | ;; (defun inversion-upgrade-package (package &optional directory) | |
516 | ;; "Try to upgrade PACKAGE in DIRECTORY is available." | |
517 | ;; (interactive "sPackage to upgrade: ") | |
518 | ;; (if (stringp package) (setq package (intern package))) | |
519 | ;; (if (not directory) | |
520 | ;; ;; Hope that the package maintainer specified. | |
521 | ;; (setq directory (symbol-value (or (intern-soft | |
522 | ;; (concat (symbol-name package) | |
523 | ;; "-url")) | |
524 | ;; (intern-soft | |
525 | ;; (concat (symbol-name package) | |
526 | ;; "-directory")))))) | |
527 | ;; (let ((files (inversion-locate-package-files-and-split | |
528 | ;; package directory)) | |
529 | ;; (cver (inversion-package-version package)) | |
530 | ;; (newer nil)) | |
531 | ;; (mapc (lambda (f) | |
532 | ;; (if (inversion-< cver (inversion-decode-version (car f))) | |
533 | ;; (setq newer (cons f newer)))) | |
534 | ;; files) | |
535 | ;; newer | |
536 | ;; )) | |
537 | ||
538 | (provide 'inversion) | |
539 | ||
540 | ;;; inversion.el ends here |