| 1 | """Python GIT interface |
| 2 | """ |
| 3 | |
| 4 | __copyright__ = """ |
| 5 | Copyright (C) 2005, Catalin Marinas <catalin.marinas@gmail.com> |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License version 2 as |
| 9 | published by the Free Software Foundation. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | """ |
| 20 | |
| 21 | import sys, os, popen2 |
| 22 | |
| 23 | from stgit.utils import * |
| 24 | |
| 25 | # git exception class |
| 26 | class GitException(Exception): |
| 27 | pass |
| 28 | |
| 29 | |
| 30 | |
| 31 | # |
| 32 | # Classes |
| 33 | # |
| 34 | class Commit: |
| 35 | """Handle the commit objects |
| 36 | """ |
| 37 | def __init__(self, id_hash): |
| 38 | self.__id_hash = id_hash |
| 39 | |
| 40 | lines = _output_lines('git-cat-file commit %s' % id_hash) |
| 41 | self.__parents = [] |
| 42 | for i in range(len(lines)): |
| 43 | line = lines[i] |
| 44 | if line == '\n': |
| 45 | break |
| 46 | field = line.strip().split(' ', 1) |
| 47 | if field[0] == 'tree': |
| 48 | self.__tree = field[1] |
| 49 | elif field[0] == 'parent': |
| 50 | self.__parents.append(field[1]) |
| 51 | if field[0] == 'author': |
| 52 | self.__author = field[1] |
| 53 | if field[0] == 'committer': |
| 54 | self.__committer = field[1] |
| 55 | self.__log = ''.join(lines[i+1:]) |
| 56 | |
| 57 | def get_id_hash(self): |
| 58 | return self.__id_hash |
| 59 | |
| 60 | def get_tree(self): |
| 61 | return self.__tree |
| 62 | |
| 63 | def get_parent(self): |
| 64 | return self.__parents[0] |
| 65 | |
| 66 | def get_parents(self): |
| 67 | return self.__parents |
| 68 | |
| 69 | def get_author(self): |
| 70 | return self.__author |
| 71 | |
| 72 | def get_committer(self): |
| 73 | return self.__committer |
| 74 | |
| 75 | def get_log(self): |
| 76 | return self.__log |
| 77 | |
| 78 | # dictionary of Commit objects, used to avoid multiple calls to git |
| 79 | __commits = dict() |
| 80 | |
| 81 | # |
| 82 | # Functions |
| 83 | # |
| 84 | |
| 85 | def get_base_dir(): |
| 86 | """Different start-up variables read from the environment |
| 87 | """ |
| 88 | if 'GIT_DIR' in os.environ: |
| 89 | return os.environ['GIT_DIR'] |
| 90 | else: |
| 91 | return _output_one_line('git-rev-parse --git-dir') |
| 92 | |
| 93 | def get_commit(id_hash): |
| 94 | """Commit objects factory. Save/look-up them in the __commits |
| 95 | dictionary |
| 96 | """ |
| 97 | global __commits |
| 98 | |
| 99 | if id_hash in __commits: |
| 100 | return __commits[id_hash] |
| 101 | else: |
| 102 | commit = Commit(id_hash) |
| 103 | __commits[id_hash] = commit |
| 104 | return commit |
| 105 | |
| 106 | def get_conflicts(): |
| 107 | """Return the list of file conflicts |
| 108 | """ |
| 109 | conflicts_file = os.path.join(get_base_dir(), 'conflicts') |
| 110 | if os.path.isfile(conflicts_file): |
| 111 | f = file(conflicts_file) |
| 112 | names = [line.strip() for line in f.readlines()] |
| 113 | f.close() |
| 114 | return names |
| 115 | else: |
| 116 | return None |
| 117 | |
| 118 | def _input(cmd, file_desc): |
| 119 | p = popen2.Popen3(cmd, True) |
| 120 | while True: |
| 121 | line = file_desc.readline() |
| 122 | if not line: |
| 123 | break |
| 124 | p.tochild.write(line) |
| 125 | p.tochild.close() |
| 126 | if p.wait(): |
| 127 | raise GitException, '%s failed' % str(cmd) |
| 128 | |
| 129 | def _output(cmd): |
| 130 | p=popen2.Popen3(cmd, True) |
| 131 | output = p.fromchild.read() |
| 132 | if p.wait(): |
| 133 | raise GitException, '%s failed' % str(cmd) |
| 134 | return output |
| 135 | |
| 136 | def _output_one_line(cmd, file_desc = None): |
| 137 | p=popen2.Popen3(cmd, True) |
| 138 | if file_desc != None: |
| 139 | for line in file_desc: |
| 140 | p.tochild.write(line) |
| 141 | p.tochild.close() |
| 142 | output = p.fromchild.readline().strip() |
| 143 | if p.wait(): |
| 144 | raise GitException, '%s failed' % str(cmd) |
| 145 | return output |
| 146 | |
| 147 | def _output_lines(cmd): |
| 148 | p=popen2.Popen3(cmd, True) |
| 149 | lines = p.fromchild.readlines() |
| 150 | if p.wait(): |
| 151 | raise GitException, '%s failed' % str(cmd) |
| 152 | return lines |
| 153 | |
| 154 | def __run(cmd, args=None): |
| 155 | """__run: runs cmd using spawnvp. |
| 156 | |
| 157 | Runs cmd using spawnvp. The shell is avoided so it won't mess up |
| 158 | our arguments. If args is very large, the command is run multiple |
| 159 | times; args is split xargs style: cmd is passed on each |
| 160 | invocation. Unlike xargs, returns immediately if any non-zero |
| 161 | return code is received. |
| 162 | """ |
| 163 | |
| 164 | args_l=cmd.split() |
| 165 | if args is None: |
| 166 | args = [] |
| 167 | for i in range(0, len(args)+1, 100): |
| 168 | r=os.spawnvp(os.P_WAIT, args_l[0], args_l + args[i:min(i+100, len(args))]) |
| 169 | if r: |
| 170 | return r |
| 171 | return 0 |
| 172 | |
| 173 | def __tree_status(files = None, tree_id = 'HEAD', unknown = False, |
| 174 | noexclude = True): |
| 175 | """Returns a list of pairs - [status, filename] |
| 176 | """ |
| 177 | refresh_index() |
| 178 | |
| 179 | if not files: |
| 180 | files = [] |
| 181 | cache_files = [] |
| 182 | |
| 183 | # unknown files |
| 184 | if unknown: |
| 185 | exclude_file = os.path.join(get_base_dir(), 'info', 'exclude') |
| 186 | base_exclude = ['--exclude=%s' % s for s in |
| 187 | ['*.[ao]', '*.pyc', '.*', '*~', '#*', 'TAGS', 'tags']] |
| 188 | base_exclude.append('--exclude-per-directory=.gitignore') |
| 189 | |
| 190 | if os.path.exists(exclude_file): |
| 191 | extra_exclude = ['--exclude-from=%s' % exclude_file] |
| 192 | else: |
| 193 | extra_exclude = [] |
| 194 | if noexclude: |
| 195 | extra_exclude = base_exclude = [] |
| 196 | |
| 197 | lines = _output_lines(['git-ls-files', '--others'] + base_exclude |
| 198 | + extra_exclude) |
| 199 | cache_files += [('?', line.strip()) for line in lines] |
| 200 | |
| 201 | # conflicted files |
| 202 | conflicts = get_conflicts() |
| 203 | if not conflicts: |
| 204 | conflicts = [] |
| 205 | cache_files += [('C', filename) for filename in conflicts] |
| 206 | |
| 207 | # the rest |
| 208 | for line in _output_lines(['git-diff-index', tree_id] + files): |
| 209 | fs = tuple(line.rstrip().split(' ',4)[-1].split('\t',1)) |
| 210 | if fs[1] not in conflicts: |
| 211 | cache_files.append(fs) |
| 212 | |
| 213 | return cache_files |
| 214 | |
| 215 | def local_changes(): |
| 216 | """Return true if there are local changes in the tree |
| 217 | """ |
| 218 | return len(__tree_status()) != 0 |
| 219 | |
| 220 | # HEAD value cached |
| 221 | __head = None |
| 222 | |
| 223 | def get_head(): |
| 224 | """Verifies the HEAD and returns the SHA1 id that represents it |
| 225 | """ |
| 226 | global __head |
| 227 | |
| 228 | if not __head: |
| 229 | __head = rev_parse('HEAD') |
| 230 | return __head |
| 231 | |
| 232 | def get_head_file(): |
| 233 | """Returns the name of the file pointed to by the HEAD link |
| 234 | """ |
| 235 | return os.path.basename(_output_one_line('git-symbolic-ref HEAD')) |
| 236 | |
| 237 | def set_head_file(ref): |
| 238 | """Resets HEAD to point to a new ref |
| 239 | """ |
| 240 | # head cache flushing is needed since we might have a different value |
| 241 | # in the new head |
| 242 | __clear_head_cache() |
| 243 | if __run('git-symbolic-ref HEAD', [ref]) != 0: |
| 244 | raise GitException, 'Could not set head to "%s"' % ref |
| 245 | |
| 246 | def __set_head(val): |
| 247 | """Sets the HEAD value |
| 248 | """ |
| 249 | global __head |
| 250 | |
| 251 | if not __head or __head != val: |
| 252 | if __run('git-update-ref HEAD', [val]) != 0: |
| 253 | raise GitException, 'Could not update HEAD to "%s".' % val |
| 254 | __head = val |
| 255 | |
| 256 | def __clear_head_cache(): |
| 257 | """Sets the __head to None so that a re-read is forced |
| 258 | """ |
| 259 | global __head |
| 260 | |
| 261 | __head = None |
| 262 | |
| 263 | def refresh_index(): |
| 264 | """Refresh index with stat() information from the working directory. |
| 265 | """ |
| 266 | __run('git-update-index -q --unmerged --refresh') |
| 267 | |
| 268 | def rev_parse(git_id): |
| 269 | """Parse the string and return a verified SHA1 id |
| 270 | """ |
| 271 | try: |
| 272 | return _output_one_line(['git-rev-parse', '--verify', git_id]) |
| 273 | except GitException: |
| 274 | raise GitException, 'Unknown revision: %s' % git_id |
| 275 | |
| 276 | def branch_exists(branch): |
| 277 | """Existence check for the named branch |
| 278 | """ |
| 279 | for line in _output_lines(['git-rev-parse', '--symbolic', '--all']): |
| 280 | if line.strip() == branch: |
| 281 | return True |
| 282 | return False |
| 283 | |
| 284 | def create_branch(new_branch, tree_id = None): |
| 285 | """Create a new branch in the git repository |
| 286 | """ |
| 287 | new_head = os.path.join('refs', 'heads', new_branch) |
| 288 | if branch_exists(new_head): |
| 289 | raise GitException, 'Branch "%s" already exists' % new_branch |
| 290 | |
| 291 | current_head = get_head() |
| 292 | set_head_file(new_head) |
| 293 | __set_head(current_head) |
| 294 | |
| 295 | # a checkout isn't needed if new branch points to the current head |
| 296 | if tree_id: |
| 297 | switch(tree_id) |
| 298 | |
| 299 | if os.path.isfile(os.path.join(get_base_dir(), 'MERGE_HEAD')): |
| 300 | os.remove(os.path.join(get_base_dir(), 'MERGE_HEAD')) |
| 301 | |
| 302 | def switch_branch(name): |
| 303 | """Switch to a git branch |
| 304 | """ |
| 305 | global __head |
| 306 | |
| 307 | new_head = os.path.join('refs', 'heads', name) |
| 308 | if not branch_exists(new_head): |
| 309 | raise GitException, 'Branch "%s" does not exist' % name |
| 310 | |
| 311 | tree_id = rev_parse(new_head + '^0') |
| 312 | if tree_id != get_head(): |
| 313 | refresh_index() |
| 314 | if __run('git-read-tree -u -m', [get_head(), tree_id]) != 0: |
| 315 | raise GitException, 'git-read-tree failed (local changes maybe?)' |
| 316 | __head = tree_id |
| 317 | set_head_file(new_head) |
| 318 | |
| 319 | if os.path.isfile(os.path.join(get_base_dir(), 'MERGE_HEAD')): |
| 320 | os.remove(os.path.join(get_base_dir(), 'MERGE_HEAD')) |
| 321 | |
| 322 | def delete_branch(name): |
| 323 | """Delete a git branch |
| 324 | """ |
| 325 | branch_head = os.path.join('refs', 'heads', name) |
| 326 | if not branch_exists(branch_head): |
| 327 | raise GitException, 'Branch "%s" does not exist' % name |
| 328 | os.remove(os.path.join(get_base_dir(), branch_head)) |
| 329 | |
| 330 | def rename_branch(from_name, to_name): |
| 331 | """Rename a git branch |
| 332 | """ |
| 333 | from_head = os.path.join('refs', 'heads', from_name) |
| 334 | if not branch_exists(from_head): |
| 335 | raise GitException, 'Branch "%s" does not exist' % from_name |
| 336 | to_head = os.path.join('refs', 'heads', to_name) |
| 337 | if branch_exists(to_head): |
| 338 | raise GitException, 'Branch "%s" already exists' % to_name |
| 339 | |
| 340 | if get_head_file() == from_name: |
| 341 | set_head_file(to_head) |
| 342 | os.rename(os.path.join(get_base_dir(), from_head), \ |
| 343 | os.path.join(get_base_dir(), to_head)) |
| 344 | |
| 345 | def add(names): |
| 346 | """Add the files or recursively add the directory contents |
| 347 | """ |
| 348 | # generate the file list |
| 349 | files = [] |
| 350 | for i in names: |
| 351 | if not os.path.exists(i): |
| 352 | raise GitException, 'Unknown file or directory: %s' % i |
| 353 | |
| 354 | if os.path.isdir(i): |
| 355 | # recursive search. We only add files |
| 356 | for root, dirs, local_files in os.walk(i): |
| 357 | for name in [os.path.join(root, f) for f in local_files]: |
| 358 | if os.path.isfile(name): |
| 359 | files.append(os.path.normpath(name)) |
| 360 | elif os.path.isfile(i): |
| 361 | files.append(os.path.normpath(i)) |
| 362 | else: |
| 363 | raise GitException, '%s is not a file or directory' % i |
| 364 | |
| 365 | if files: |
| 366 | if __run('git-update-index --add --', files): |
| 367 | raise GitException, 'Unable to add file' |
| 368 | |
| 369 | def rm(files, force = False): |
| 370 | """Remove a file from the repository |
| 371 | """ |
| 372 | if not force: |
| 373 | for f in files: |
| 374 | if os.path.exists(f): |
| 375 | raise GitException, '%s exists. Remove it first' %f |
| 376 | if files: |
| 377 | __run('git-update-index --remove --', files) |
| 378 | else: |
| 379 | if files: |
| 380 | __run('git-update-index --force-remove --', files) |
| 381 | |
| 382 | def update_cache(files = None, force = False): |
| 383 | """Update the cache information for the given files |
| 384 | """ |
| 385 | if not files: |
| 386 | files = [] |
| 387 | |
| 388 | cache_files = __tree_status(files) |
| 389 | |
| 390 | # everything is up-to-date |
| 391 | if len(cache_files) == 0: |
| 392 | return False |
| 393 | |
| 394 | # check for unresolved conflicts |
| 395 | if not force and [x for x in cache_files |
| 396 | if x[0] not in ['M', 'N', 'A', 'D']]: |
| 397 | raise GitException, 'Updating cache failed: unresolved conflicts' |
| 398 | |
| 399 | # update the cache |
| 400 | add_files = [x[1] for x in cache_files if x[0] in ['N', 'A']] |
| 401 | rm_files = [x[1] for x in cache_files if x[0] in ['D']] |
| 402 | m_files = [x[1] for x in cache_files if x[0] in ['M']] |
| 403 | |
| 404 | if add_files and __run('git-update-index --add --', add_files) != 0: |
| 405 | raise GitException, 'Failed git-update-index --add' |
| 406 | if rm_files and __run('git-update-index --force-remove --', rm_files) != 0: |
| 407 | raise GitException, 'Failed git-update-index --rm' |
| 408 | if m_files and __run('git-update-index --', m_files) != 0: |
| 409 | raise GitException, 'Failed git-update-index' |
| 410 | |
| 411 | return True |
| 412 | |
| 413 | def commit(message, files = None, parents = None, allowempty = False, |
| 414 | cache_update = True, tree_id = None, |
| 415 | author_name = None, author_email = None, author_date = None, |
| 416 | committer_name = None, committer_email = None): |
| 417 | """Commit the current tree to repository |
| 418 | """ |
| 419 | if not files: |
| 420 | files = [] |
| 421 | if not parents: |
| 422 | parents = [] |
| 423 | |
| 424 | # Get the tree status |
| 425 | if cache_update and parents != []: |
| 426 | changes = update_cache(files) |
| 427 | if not changes and not allowempty: |
| 428 | raise GitException, 'No changes to commit' |
| 429 | |
| 430 | # get the commit message |
| 431 | if message[-1:] != '\n': |
| 432 | message += '\n' |
| 433 | |
| 434 | must_switch = True |
| 435 | # write the index to repository |
| 436 | if tree_id == None: |
| 437 | tree_id = _output_one_line('git-write-tree') |
| 438 | else: |
| 439 | must_switch = False |
| 440 | |
| 441 | # the commit |
| 442 | cmd = '' |
| 443 | if author_name: |
| 444 | cmd += 'GIT_AUTHOR_NAME="%s" ' % author_name |
| 445 | if author_email: |
| 446 | cmd += 'GIT_AUTHOR_EMAIL="%s" ' % author_email |
| 447 | if author_date: |
| 448 | cmd += 'GIT_AUTHOR_DATE="%s" ' % author_date |
| 449 | if committer_name: |
| 450 | cmd += 'GIT_COMMITTER_NAME="%s" ' % committer_name |
| 451 | if committer_email: |
| 452 | cmd += 'GIT_COMMITTER_EMAIL="%s" ' % committer_email |
| 453 | cmd += 'git-commit-tree %s' % tree_id |
| 454 | |
| 455 | # get the parents |
| 456 | for p in parents: |
| 457 | cmd += ' -p %s' % p |
| 458 | |
| 459 | commit_id = _output_one_line(cmd, message) |
| 460 | if must_switch: |
| 461 | __set_head(commit_id) |
| 462 | |
| 463 | return commit_id |
| 464 | |
| 465 | def apply_diff(rev1, rev2): |
| 466 | """Apply the diff between rev1 and rev2 onto the current |
| 467 | index. This function doesn't need to raise an exception since it |
| 468 | is only used for fast-pushing a patch. If this operation fails, |
| 469 | the pushing would fall back to the three-way merge. |
| 470 | """ |
| 471 | return os.system('git-diff-tree -p %s %s | git-apply --index 2> /dev/null' |
| 472 | % (rev1, rev2)) == 0 |
| 473 | |
| 474 | def merge(base, head1, head2): |
| 475 | """Perform a 3-way merge between base, head1 and head2 into the |
| 476 | local tree |
| 477 | """ |
| 478 | refresh_index() |
| 479 | if __run('git-read-tree -u -m', [base, head1, head2]) != 0: |
| 480 | raise GitException, 'git-read-tree failed (local changes maybe?)' |
| 481 | |
| 482 | # this can fail if there are conflicts |
| 483 | if __run('git-merge-index -o -q gitmergeonefile.py -a') != 0: |
| 484 | raise GitException, 'git-merge-index failed (possible conflicts)' |
| 485 | |
| 486 | def status(files = None, modified = False, new = False, deleted = False, |
| 487 | conflict = False, unknown = False, noexclude = False): |
| 488 | """Show the tree status |
| 489 | """ |
| 490 | if not files: |
| 491 | files = [] |
| 492 | |
| 493 | cache_files = __tree_status(files, unknown = True, noexclude = noexclude) |
| 494 | all = not (modified or new or deleted or conflict or unknown) |
| 495 | |
| 496 | if not all: |
| 497 | filestat = [] |
| 498 | if modified: |
| 499 | filestat.append('M') |
| 500 | if new: |
| 501 | filestat.append('A') |
| 502 | filestat.append('N') |
| 503 | if deleted: |
| 504 | filestat.append('D') |
| 505 | if conflict: |
| 506 | filestat.append('C') |
| 507 | if unknown: |
| 508 | filestat.append('?') |
| 509 | cache_files = [x for x in cache_files if x[0] in filestat] |
| 510 | |
| 511 | for fs in cache_files: |
| 512 | if all: |
| 513 | print '%s %s' % (fs[0], fs[1]) |
| 514 | else: |
| 515 | print '%s' % fs[1] |
| 516 | |
| 517 | def diff(files = None, rev1 = 'HEAD', rev2 = None, out_fd = None): |
| 518 | """Show the diff between rev1 and rev2 |
| 519 | """ |
| 520 | if not files: |
| 521 | files = [] |
| 522 | |
| 523 | if rev1 and rev2: |
| 524 | diff_str = _output(['git-diff-tree', '-p', rev1, rev2] + files) |
| 525 | elif rev1 or rev2: |
| 526 | refresh_index() |
| 527 | if rev2: |
| 528 | diff_str = _output(['git-diff-index', '-p', '-R', rev2] + files) |
| 529 | else: |
| 530 | diff_str = _output(['git-diff-index', '-p', rev1] + files) |
| 531 | else: |
| 532 | diff_str = '' |
| 533 | |
| 534 | if out_fd: |
| 535 | out_fd.write(diff_str) |
| 536 | else: |
| 537 | return diff_str |
| 538 | |
| 539 | def diffstat(files = None, rev1 = 'HEAD', rev2 = None): |
| 540 | """Return the diffstat between rev1 and rev2 |
| 541 | """ |
| 542 | if not files: |
| 543 | files = [] |
| 544 | |
| 545 | p=popen2.Popen3('git-apply --stat') |
| 546 | diff(files, rev1, rev2, p.tochild) |
| 547 | p.tochild.close() |
| 548 | diff_str = p.fromchild.read().rstrip() |
| 549 | if p.wait(): |
| 550 | raise GitException, 'git.diffstat failed' |
| 551 | return diff_str |
| 552 | |
| 553 | def files(rev1, rev2): |
| 554 | """Return the files modified between rev1 and rev2 |
| 555 | """ |
| 556 | |
| 557 | result = '' |
| 558 | for line in _output_lines('git-diff-tree -r %s %s' % (rev1, rev2)): |
| 559 | result += '%s %s\n' % tuple(line.rstrip().split(' ',4)[-1].split('\t',1)) |
| 560 | |
| 561 | return result.rstrip() |
| 562 | |
| 563 | def barefiles(rev1, rev2): |
| 564 | """Return the files modified between rev1 and rev2, without status info |
| 565 | """ |
| 566 | |
| 567 | result = '' |
| 568 | for line in _output_lines('git-diff-tree -r %s %s' % (rev1, rev2)): |
| 569 | result += '%s\n' % line.rstrip().split(' ',4)[-1].split('\t',1)[-1] |
| 570 | |
| 571 | return result.rstrip() |
| 572 | |
| 573 | def checkout(files = None, tree_id = None, force = False): |
| 574 | """Check out the given or all files |
| 575 | """ |
| 576 | if not files: |
| 577 | files = [] |
| 578 | |
| 579 | if tree_id and __run('git-read-tree -m', [tree_id]) != 0: |
| 580 | raise GitException, 'Failed git-read-tree -m %s' % tree_id |
| 581 | |
| 582 | checkout_cmd = 'git-checkout-index -q -u' |
| 583 | if force: |
| 584 | checkout_cmd += ' -f' |
| 585 | if len(files) == 0: |
| 586 | checkout_cmd += ' -a' |
| 587 | else: |
| 588 | checkout_cmd += ' --' |
| 589 | |
| 590 | if __run(checkout_cmd, files) != 0: |
| 591 | raise GitException, 'Failed git-checkout-index' |
| 592 | |
| 593 | def switch(tree_id): |
| 594 | """Switch the tree to the given id |
| 595 | """ |
| 596 | refresh_index() |
| 597 | if __run('git-read-tree -u -m', [get_head(), tree_id]) != 0: |
| 598 | raise GitException, 'git-read-tree failed (local changes maybe?)' |
| 599 | |
| 600 | __set_head(tree_id) |
| 601 | |
| 602 | def reset(files = None, tree_id = 'HEAD'): |
| 603 | """Revert the tree changes relative to the given tree_id. It removes |
| 604 | any local changes |
| 605 | """ |
| 606 | checkout(files, tree_id, True) |
| 607 | |
| 608 | # if the reset refers to the whole tree, switch the HEAD as well |
| 609 | if tree_id and not files: |
| 610 | __set_head(tree_id) |
| 611 | |
| 612 | def pull(repository = 'origin', refspec = None): |
| 613 | """Pull changes from the remote repository. At the moment, just |
| 614 | use the 'git pull' command |
| 615 | """ |
| 616 | # 'git pull' updates the HEAD |
| 617 | __clear_head_cache() |
| 618 | |
| 619 | args = [repository] |
| 620 | if refspec: |
| 621 | args.append(refspec) |
| 622 | |
| 623 | if __run('git pull', args) != 0: |
| 624 | raise GitException, 'Failed "git pull %s"' % repository |
| 625 | |
| 626 | def apply_patch(filename = None, base = None): |
| 627 | """Apply a patch onto the current or given index. There must not |
| 628 | be any local changes in the tree, otherwise the command fails |
| 629 | """ |
| 630 | def __apply_patch(): |
| 631 | if filename: |
| 632 | return __run('git-apply --index', [filename]) == 0 |
| 633 | else: |
| 634 | try: |
| 635 | _input('git-apply --index', sys.stdin) |
| 636 | except GitException: |
| 637 | return False |
| 638 | return True |
| 639 | |
| 640 | if base: |
| 641 | orig_head = get_head() |
| 642 | switch(base) |
| 643 | else: |
| 644 | refresh_index() # needed since __apply_patch() doesn't do it |
| 645 | |
| 646 | if not __apply_patch(): |
| 647 | if base: |
| 648 | switch(orig_head) |
| 649 | raise GitException, 'Patch does not apply cleanly' |
| 650 | elif base: |
| 651 | top = commit(message = 'temporary commit used for applying a patch', |
| 652 | parents = [base]) |
| 653 | switch(orig_head) |
| 654 | merge(base, orig_head, top) |
| 655 | |
| 656 | def clone(repository, local_dir): |
| 657 | """Clone a remote repository. At the moment, just use the |
| 658 | 'git clone' script |
| 659 | """ |
| 660 | if __run('git clone', [repository, local_dir]) != 0: |
| 661 | raise GitException, 'Failed "git clone %s %s"' \ |
| 662 | % (repository, local_dir) |
| 663 | |
| 664 | def modifying_revs(files, base_rev): |
| 665 | """Return the revisions from the list modifying the given files |
| 666 | """ |
| 667 | cmd = ['git-rev-list', '%s..' % base_rev, '--'] |
| 668 | revs = [line.strip() for line in _output_lines(cmd + files)] |
| 669 | |
| 670 | return revs |