/[meta-cvs]/meta-cvs/F-B3689DBB46386B16F4B2331934B69223
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Revision 1.127.2.16 - (show annotations)
Sun Oct 27 00:25:39 2002 UTC (11 years, 5 months ago) by kaz
Branch: mcvs-1-0-branch
Changes since 1.127.2.15: +2 -0 lines
New link command for creating symlinks.

* mcvs-main.lisp (*link-options*): New option constant.
(*mcvs-command-table*): Entries for new command added.
(*usage*): Help text added.

* link.lisp: New file.
(mcvs-link, mcvs-link-wrapper): New functions.
1 Release Notes for Meta-CVS
2
3 Release 0.99, 2002-1?-??:
4
5 New link command for creating symbolic links.
6
7 Failure to invoke text editor is handled.
8
9 The -r option of filt is fixed; it has been broken since the change to the
10 new MAP format, because it was reading the raw map representation, not
11 passing it through the right conversion steps that are needed now.
12
13 Bugfix to purge and remap commands: they were fooled by CVS-generated
14 files in the MCVS/CVS directory. Specifically, files having F- names, and a
15 the suffix ,t.
16
17 Help text added for move command. Help text for grab rewritten.
18
19 Release 0.98, 2002-10-13:
20
21 The prop command was mistakenly reading from MAP-LOCAL and writing to MAP,
22 which could cause information loss if the two differ. It now reads from MAP
23 and writes to MAP. (The property changes propagate to MAP-LOCAL by the
24 update operation invoked by prop, as before).
25
26 Invocation of external programs included in debug trace.
27
28 The filt command does not filter F- names if they are immediately preceded by
29 the MCVS/ prefix; such occurences are clearly concrete, sandbox-relative
30 references to the actual F- links, rather than abstract references.
31
32 The update command now supports the -C option, to fetch the repository
33 copy, throwing away local changes. It also now honors the --metaonly
34 and --nometa options.
35
36 The export command has been added, for checking out documents without creating
37 a working copy (no MCVS directory in the root of the checkout).
38
39 The watch command has been added. Note that its syntax differs from that
40 of CVS.
41
42 The watchers, editors, edit, and unedit commands have been added.
43
44 A script called mcvs-upgrade is now included, and installs alongside the mcvs
45 script. This allows the Meta-CVS Lisp image to recompile and patch itself,
46 giving users of binary distributions an easy way to upgrade from source
47 code.
48
49 Release 0.97, 2002-10-06:
50
51 Meta-CVS now builds and runs on Microsoft Windows, under Cygwin
52 (www.cygwin.com). It still relies on hard links, which requires
53 Windows 2000 or XP, and the NTFS filesystem. It probably won't
54 work over FAT.
55
56 New --debug option for verbose output.
57
58 Cleaned up of error messages. Error messages don't specify prefixes like
59 ``mcvs-add:'' or ``mcvs-grab:'' any more. Rather, the error handler adds the
60 ``mcvs:'' prefix when printing the messages in a situation when the error is
61 not continuable.
62
63 Fixed bug introduced in release 0.13: mcvs add -R was adding only
64 directories, effectively ignoring arguments that are regular files.
65 The error-continuation behavior of mcvs add has been revised.
66
67 Trying to rename an object onto itself, or to move the sandbox root
68 directory are no longer silent no-ops, but produce an error.
69
70 The remap command now preserves property lists, and picks up changes
71 in executable permission.
72
73 The grab command now notices when a file changes from having execute
74 permission to not having execute permission.
75
76 Operations on the path . now work in a partial sandbox.
77
78 Release 0.96, 2002-09-21:
79
80 The restore command was left broken during the change to the new
81 filemap format. It is now fixed.
82
83 The grab command now handles execute permission bits properly.
84
85 Some more commands have detailed help.
86
87 There is now a global option -i which specifies a script to be
88 executed. This allows Meta-CVS to be scripted using Lisp. For
89 instance suppose you have the following script and call it
90 list-matching:
91
92 #!/usr/local/bin/mcvs -i
93 (in-sandbox-root-dir
94 (let ((mapping (mapping-read *mcvs-map*))
95 (test-func (eval (read-from-string (pop *args*)))))
96 (dolist (entry mapping)
97 (with-slots (path raw-plist) entry
98 (when (funcall test-func raw-plist)
99 (format t "~a~%" path))))))
100
101 Then to list the names of files whose "importance" property is
102 a value greater than two, run:
103
104 ./list-matching '(lambda (plist)
105 (let ((imp (getf plist :importance)))
106 (and imp (> imp 2))))'
107
108 WARNING: Scripting accesses the guts of Meta-CVS directly, so scripts may
109 break as Meta-CVS is maintained. There is currently no published set of
110 stable interfaces.
111
112 Release 0.95, 2002-09-16:
113
114 The install.sh script no longer uses a borrowed copy of the clisp-link script
115 or the linkkit directory; these have been removed. These materials
116 are available at every CLISP installation; install.sh now finds them
117 and uses them. Users of non-x86 machines ran into problems because of this
118 because linkkit/clisp.h contains architecture-dependent information.
119
120 A bug in mcvs filt was fixed; it wasn't handling F- names that aren't found
121 in the map.
122
123 A more detailed help system now exists, though it's not complete. The ``mcvs
124 help'' command acts just like ``mcvs --help'' without any arguments. If given
125 an additional parameter which specifies a Meta-CVS command, it produces more
126 detailed documentation for that comand. Help exists already for a few
127 commands.
128
129 The release number is being warped to 0.95, which means that Meta-CVS is now
130 in beta. It is only five updates away from a 1.0 release.
131
132 Release 0.24, 2002-09-08:
133
134 The mapping entries for both symlinks and files have extensible property
135 lists now. These are stored in the optional fourth and fifth list elements,
136 respectively of the :FILE and :SYMLINK map entries.
137
138 Versioning of the execute permission of files is supported, represented as
139 the :EXEC property of a :FILE mapping entry.
140
141 Some lame syntax is provided for manipulating properties:
142
143 mcvs prop --set foo --clear bar --remove baz main.c list.c
144
145 will set the property FOO to true, set the property BAR to false,
146 and remove the property BAZ, in the files main.c and list.c.
147 The execute permission is represented by the property EXEC.
148
149 Release 0.23, 2002-09-02:
150
151 Bugfix: the grab command notices edited symlinks and incorporates the
152 changes into the mapping.
153
154 The grab command now figures out moved symlinks. Moved symlinks are those
155 whose pathname has changed, but which continue to point to the same object
156 (which may also have been moved).
157
158 Release 0.22, 2002-08-31:
159
160 Symbolic links are now versioned objects. The format of the MAP file
161 changes to accomodate this; the new Meta-CVS will read old MAP
162 files; when it writes it will write the new format. Old Meta-CVS won't
163 read the new format.
164
165 When a new module is created from an existing file tree, symbolic
166 links will be recognized and added. The add command will also add
167 symbolic links. Symbolic links can be renamed and moved; this does
168 nothing with their contents. They can point outside of the sandbox
169 using relative or absolute paths.
170
171 TODO:
172
173 There doesn't exist yet a special command to create symbolic links, nor to
174 retarget them; retargetting a link can be done manually by editing MCVS/MAP
175 and updating. Retargetting a link using the ln -s command, won't
176 backpropagate to the MAP file; an update will clobber the link.
177
178 The grab command does not yet compute symbolic link moves; a moved symbolic
179 link is treated as a remove and add. This will be easy to fix.
180
181 The remap command ignores symlinks.
182
183 Release 0.21, 2002-08-04:
184
185 Syntax of grab command changed. The branch is no longer specified as an
186 argument, but using the -r command option. If no revision is specified with
187 -r, then a -A must be specified to make the grab go to the main trunk. This
188 is a safety feature, since grabbing foreign snapshots to the trunk is almost
189 always wrong, though it could be useful during backup recovery, or for fixing
190 mistakes.
191
192 The way operating system functions are targetted has changed. Instead of
193 relying on the ``linuxlibc6'' module provided by CLISP, Meta-CVS now
194 has its own module for calling foreign functions. This module is portable;
195 it does not depend on the layout of glibc data structures. So Meta-CVS
196 is in theory now portable to other Unixes (provided they have /dev/urandom).
197
198 Release 0.20, 2002-07-27:
199
200 The commit command does a true global commit when given no file or directory
201 parameters, and not given the --metaonly option. This means commiting all
202 changes in the MCVS directory, even if they are in F-files that are not
203 currently mapped.
204
205 Release 0.19, 2002-07-16:
206
207 When moving multiple files or directories to a subdirectory, a
208 restart is now provided to skip over bad ones and continue.
209
210 Grab no longer scans files if there are only added files, or only removed
211 files. There are no moves to deduce in that case.
212
213 Restore properly creates lost+found at the root of a partial sandbox,
214 rather than at the abstract root of the module.
215
216 Some other algorithmic improvements made.
217
218 The first few sections of a user guide have been written.
219
220 Release 0.18, 2002-07-07:
221
222 Cool new feature: checkout takes an extra argument, which specifies a
223 subdirectory of the project. Specifying a subdirectory results in a ``partial
224 sandbox'', whose root directory is the specified subdirectory of the larger
225 project. The rest of the project is ``invisible'' to that sandbox. A
226 subdirectory argument can also be given to mcvs grab, which will cause it to
227 integrate the new source tree against a subtree of the Meta-CVS project
228 rather than the entire project. The subtree doesn't have to exist; in
229 that case you get an empty sandbox. Adding files to this sandbox will cause
230 the tree to exist in the project.
231
232 Bugfix: mcvs grab was not computing moves properly over small file sets,
233 wrongly treating them as removes and adds.
234
235 Release 0.17, 2002-07-02:
236
237 The create command no longer takes a vendor branch. Instead the symbol
238 ``Created-by-Meta-CVS'' is used as the vendor tag to satisfy CVS.
239
240 The grab command no longer does useless synchronization on files that
241 are about to be deleted.
242
243 New purge command; does ``cvs rm'' on deleted files, that is to say, F- files
244 that have no mapping.
245
246 New restore command; re-enters deleted files into the mapping, under
247 the ``lost+found'' directory, using their F- names as sandbox names.
248
249 Bugfix: when a checkout bails because it is requested over top of an existing
250 working copy, it must not delete that working copy's MCVS sub directory.
251
252 Release 0.16, 2002-06-29:
253
254 Added new heuristics to grab command. Paths are analyzed to determine
255 move distance. Greater distances reduce the confidence in a move.
256 These rules help sort out grabs in a project where similar or
257 duplicate files are subject to parallel moves, the ambiguity being
258 resolved by favoring shorter moves. Word comparisons are case-insensitive
259 now. Common words (those that appear in many files) are ignored when
260 comparing files.
261
262 New options, --meta and --metaonly. This area of Meta-CVS is cleaned
263 up a little bit. Most reporting commands like log or diff no longer
264 operate on meta files by default; they must be explicitly told to do
265 so with --meta or --metaonly. Only the commit command implicitly includes
266 metafiles by default, and so if this is not wanted, --nometa must be
267 selected. The update command remains special; if it is given file
268 arguments, it does not include meta files. If given no arguments, it
269 does a global CVS up across the entire project.
270
271 Release 0.15, 2002-06-25:
272
273 Optimized a string splitting routine which is used heavily for processing
274 paths; the result is a noticeable performance improvement in some commands
275 that process large numbers of files.
276
277 Renamed ``import'' command to ``create''.
278
279 Bugfix: checkout and create showed errors when removing directory, due to
280 broken :postorder support in directory walking function.
281
282 Bugfix: on failure, checkout was failing to delete the MCVS directory when
283 the checkout was directed to an existing directory.
284
285 New feature: ``mcvs grab'' command imports third-party snapshots to a
286 branch. This is invoked in the root directory of the source tree to import.
287 It determines what files have been added and removed in the snapshot, and
288 tries to compute which removes and adds are actually moves. This is done by
289 analyzing the actual contents of the files according to a crude algorithm to
290 do fuzzy comparisons, so that even files which were modified as well as moved
291 are discovered.
292
293 Release 0.14, 2002-06-21:
294
295 Bugfix: mcvs add was broken for files that have no suffix, causing
296 the underlying cvs add to fail. This was broken in 0.7 when type
297 handling was added.
298
299 Release 0.13, 2002-06-06:
300
301 Sandbox synchronization now handles the case of two files having
302 the same timestamp. An error is signaled, with interactive resolution
303 to synchronize either way, or do nothing.
304
305 If a file must be deleted on update, and this cannot be done, it
306 is now a continuable error.
307
308 Bugfix: pass -I ! to cvs import so that it won't ignore some F- files
309 whose suffix is one of the ones cvs ignores by default.
310
311 New command: mcvs remap. The user can move or delete files directly without
312 going through Meta-CVS. When mcvs remap is invoked, it will hunt down the
313 moves and deletions, and reconstruct the mapping accordingly; that is,
314 it remaps the new structure. This command uses inode numbers to identify
315 files; if a file is copied and then the original is deleted, that won't
316 be recognized as a move.
317
318 Release 0.12, 2002-04-18:
319
320 Bugfix: remove was broken in 0.10, fixed now.
321
322 Bugfix: status, diff, etc. work in empty project rather than complaining
323 ``. not known to Meta-CVS''.
324
325 The checkout operation now can now populate an existing directory, including
326 the current working directory (mcvs co -d . modulename). Of course, the
327 target directory cannot be an existing Meta-CVS sandbox.
328 This is a useful feature, which allows sandboxes to blend with an
329 existing directory structure.
330
331 Checkout now uses the same function for generating the sandbox
332 structure as does update. This is now necessary, because local files
333 can be clobbered by the checkout.
334
335 Release 0.11, 2002-04-12:
336
337 Bugfix: when branch invokes rtag, it now takes the CVSROOT information
338 from CVS/Root and passes it via -d. This is necessary because rtag does not
339 look at a local CVS subdirectory for this information, only the
340 -d option or the environment variable.
341
342 Command for listing branches added (list-branches or lb). Also shows
343 what sticky tag the sandbox is updated to.
344
345 Command for switching branches added (switch or sw).
346
347 Merge detects that working copy is on non-branch tag and bails.
348
349 Absolute paths can now be specified as file arguments. These are
350 based from the root directory of the sandbox, not the actual filesystem root
351 directory.
352
353 Release 0.10, 2002-04-03:
354
355 Automatic merging implemented. Branch is created using branch command,
356 and merging from another branch is done using simple merge command.
357 Meta-CVS maintains the tags to keep track of what has been merged
358 from what branch to what branch.
359
360 Bugfix: checkout -d foo bar was complaining about directory bar already
361 existing, even though it should only care about foo.
362
363 The remove command now requires explicit -R option to recursively remove
364 a directory. It has more detailed error reporting.
365
366 The move command has better error reporting.
367
368 Release 0.9, 2002-03-14:
369
370 Bugfix: the .cvsignore file is now subject to tagging, status, etc,
371 (unless --nometa is specified, of course).
372
373 The mcvs filt command takes -r <revision> or -D <date> parameters.
374 This means to retrieve the MAP file as of the specified revision or
375 date and use that mapping to perform the filtering translation,
376 rather than using MAP-LOCAL.
377
378 The mcvs update command takes filename arguments now and also
379 supports the -p option.
380
381 Release 0.8, 2002-03-13:
382
383 Bug fixed in mcvs add; it was not ignoring files that are already
384 listed as :ignore in MCVS/TYPES.
385
386 Bug fixed in mcvs move: a target with a trailing slash is now treated
387 as a directory (if it does not already exist and is a non-directory).
388
389 The -d option of mcvs checkout can now be used to override the checkout
390 directory, which is normally the same as the module name.
391
392 The global options --version, --help, -q, -Q and -e are now supported.
393
394 New global options --error-continue and --error-terminate to disable
395 interactive error handling in two different ways.
396
397 Log level of many messages has changed; many messages have been
398 relegated to debug level.
399
400 The import command now creates a .cvsignore file containing the name
401 MAP-LOCAL.
402
403 Release 0.7, 2002-03-09:
404
405 The import command collects a list of the file suffixes and brings up
406 a text editor to allow the user to edit their CVS keyword expansion
407 behavior. This information is kept in a new metafile called TYPES. The
408 add command also updates TYPES; it identifies any suffixes which are new,
409 and brings up an editor. The F- files now carry suffixes, which
410 simplifies interfacing with CVS, and also allows cvswrappers to work.
411
412 Recursive add works (mcvs add -R ...).
413
414 New command line option --nometa allows metafiles to be excluded from
415 diff, tag, and other commands; without the option they are inserted
416 into the list of files to be processed.
417
418 The commit option now takes an optional list of files or directories,
419 just like tag, diff, and others.
420
421 Release 0.6, 2002-02-16:
422
423 The add operation was horribly broken in 0.5, it is fixed.
424
425 User can interactively select whether to clobber local files or leave
426 everything alone. Effects on the mapping file of a mcvs move are undone,
427 if the restructuring is rolled back, or raises a condition that leads
428 to termination.
429
430 Meta-CVS now keeps a new meta-file called MCVS/TYPES. This is created
431 during import, and specifies the CVS keyword expansion mode for files
432 having given suffixes, and can also tell Meta-CVS to ignore certain files
433 when importing or adding.
434
435 Release 0.5, 2002-02-10:
436
437 Much improved error handling. Filesystem rearranging code performs
438 sanity checks to prevent adds and moves from accidentally clobbering
439 local files. A rearranging gone bad can be rolled back. Effects
440 of a failed mcvs add can also be rolled back.
441
442 MAP-LOCAL is now sorted in the same way as MAP.
443
444 Release 0.4, 2002-02-04:
445
446 CVS is invoked using internal function resembling the xargs utility,
447 which ensures that multiple command lines are generated if necessary to
448 avoid surpassing the operating system limit on argument and environment
449 vector size. This is important when someone wants to diff or stat a
450 subdirectory, which requires Meta-CVS to pick out the individual files
451 at the CVS level.
452
453 The tag, log, status and annotate commands are now available.
454
455 The MAP file is sorted on F- file names now, not path names. This
456 improves merging, since files do not move within the file when
457 they are renamed.
458
459 Release 0.3, 2002-02-02:
460
461 Process termination done is properly in top level handler, by a nonlocal
462 exit. The program properly indicates failed termination when it exits
463 due to an error condition.
464
465 Corrections are made in the command line option processing. If z is an
466 option that takes an argument, and the argument is -zx, then x is
467 treated as the argument to the option. Long options arguments are
468 recognized properly, according to the --opt=arg convention. The option
469 processing is restructured. Most of the commands now take the
470 appropriate cvs command-specific options.
471
472 The update algorithm performs dupe checking over the map, which could
473 happen during a merge.
474
475 Some more bugfixing has been done to the move command. It was still not
476 handling right some cases of an unversioned file being clobbered. Also,
477 it wasn't renaming a directory containing just one file.
478
479 I did some performance investigation for larger file sets, and
480 ended up rewriting the code that computes filesystem restructuring
481 changes and map duplicates.
482
483 Release 0.2, 2002-01-30:
484
485 Changed official name from MCVS to Meta-CVS. The move command now
486 performs some filesystem tests so it does the right thing when a versioned
487 file is moved over a non-versioned file, or when a file is moved into
488 a directory not known to Meta-CVS. Factored out reading and writing of
489 map files into functions.
490
491 Release 0.1, 2002-01-28:
492
493 Support for mcvs diff -u added. The -R option works for mcvs add command.
494 Bug fixed in mcvs mv command; it wasn't working analogously to the Unix
495 mv command when copying a directory to an existing directory.
496
497 Release 0.0, 2002-01-27:
498
499 This is alpha software. It is not complete, and lacks documentation.
500 However, it is already usable in its present state and is being used for
501 version control by its author. If you can program in Common Lisp and would
502 like to help, take a look through the TODO file. Send me patches, ideas,
503 feature requests.

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