bin/egencache

   1 #!/usr/bin/python
   2 # Copyright 2009-2011 Gentoo Foundation
   3 # Distributed under the terms of the GNU General Public License v2
   4
   5 from __future__ import print_function
   6
   7 import signal
   8 import sys
   9 # This block ensures that ^C interrupts are handled quietly.
  10 try:
  11
  12         def exithandler(signum,frame):
  13                 signal.signal(signal.SIGINT, signal.SIG_IGN)
  14                 signal.signal(signal.SIGTERM, signal.SIG_IGN)
  15                 sys.exit(128 + signum)
  16
  17         signal.signal(signal.SIGINT, exithandler)
  18         signal.signal(signal.SIGTERM, exithandler)
  19
  20 except KeyboardInterrupt:
  21         sys.exit(128 + signal.SIGINT)
  22
  23 import codecs
  24 import logging
  25 import optparse
  26 import subprocess
  27 import time
  28 import textwrap
  29 import re
  30
  31 try:
  32         import portage
  33 except ImportError:
  34         from os import path as osp
  35         sys.path.insert(0, osp.join(osp.dirname(osp.dirname(osp.realpath(__file__))), "pym"))
  36         import portage
  37
  38 from portage import os, _encodings, _unicode_encode, _unicode_decode
  39 from _emerge.MetadataRegen import MetadataRegen
  40 from portage.cache.cache_errors import CacheError, StatCollision
  41 from portage.manifest import guessManifestFileType
  42 from portage.util import cmp_sort_key, writemsg_level
  43 from portage import cpv_getkey
  44 from portage.dep import Atom, isjustname
  45 from portage.versions import pkgcmp, pkgsplit, vercmp
  46
  47 try:
  48         from xml.etree import ElementTree
  49 except ImportError:
  50         pass
  51 else:
  52         try:
  53                 from xml.parsers.expat import ExpatError
  54         except ImportError:
  55                 pass
  56         else:
  57                 from repoman.utilities import parse_metadata_use
  58
  59 from repoman.utilities import FindVCS
  60
  61 if sys.hexversion >= 0x3000000:
  62         long = int
  63
  64 def parse_args(args):
  65         usage = "egencache [options] <action> ... [atom] ..."
  66         parser = optparse.OptionParser(usage=usage)
  67
  68         actions = optparse.OptionGroup(parser, 'Actions')
  69         actions.add_option("--update",
  70                 action="store_true",
  71                 help="update metadata/cache/ (generate as necessary)")
  72         actions.add_option("--update-use-local-desc",
  73                 action="store_true",
  74                 help="update the use.local.desc file from metadata.xml")
  75         actions.add_option("--update-changelogs",
  76                 action="store_true",
  77                 help="update the ChangeLog files from SCM logs")
  78         parser.add_option_group(actions)
  79
  80         common = optparse.OptionGroup(parser, 'Common options')
  81         common.add_option("--repo",
  82                 action="store",
  83                 help="name of repo to operate on (default repo is located at $PORTDIR)")
  84         common.add_option("--config-root",
  85                 help="location of portage config files",
  86                 dest="portage_configroot")
  87         common.add_option("--portdir",
  88                 help="override the portage tree location",
  89                 dest="portdir")
  90         common.add_option("--tolerant",
  91                 action="store_true",
  92                 help="exit successfully if only minor errors occurred")
  93         common.add_option("--ignore-default-opts",
  94                 action="store_true",
  95                 help="do not use the EGENCACHE_DEFAULT_OPTS environment variable")
  96         parser.add_option_group(common)
  97
  98         update = optparse.OptionGroup(parser, '--update options')
  99         update.add_option("--cache-dir",
 100                 help="location of the metadata cache",
 101                 dest="cache_dir")
 102         update.add_option("--jobs",
 103                 action="store",
 104                 help="max ebuild processes to spawn")
 105         update.add_option("--load-average",
 106                 action="store",
 107                 help="max load allowed when spawning multiple jobs",
 108                 dest="load_average")
 109         update.add_option("--rsync",
 110                 action="store_true",
 111                 help="enable rsync stat collision workaround " + \
 112                         "for bug 139134 (use with --update)")
 113         parser.add_option_group(update)
 114
 115         uld = optparse.OptionGroup(parser, '--update-use-local-desc options')
 116         uld.add_option("--preserve-comments",
 117                 action="store_true",
 118                 help="preserve the comments from the existing use.local.desc file")
 119         uld.add_option("--use-local-desc-output",
 120                 help="output file for use.local.desc data (or '-' for stdout)",
 121                 dest="uld_output")
 122         parser.add_option_group(uld)
 123
 124         options, args = parser.parse_args(args)
 125
 126         if options.jobs:
 127                 jobs = None
 128                 try:
 129                         jobs = int(options.jobs)
 130                 except ValueError:
 131                         jobs = -1
 132
 133                 if jobs < 1:
 134                         parser.error("Invalid: --jobs='%s'" % \
 135                                 (options.jobs,))
 136
 137                 options.jobs = jobs
 138
 139         else:
 140                 options.jobs = None
 141
 142         if options.load_average:
 143                 try:
 144                         load_average = float(options.load_average)
 145                 except ValueError:
 146                         load_average = 0.0
 147
 148                 if load_average <= 0.0:
 149                         parser.error("Invalid: --load-average='%s'" % \
 150                                 (options.load_average,))
 151
 152                 options.load_average = load_average
 153
 154         else:
 155                 options.load_average = None
 156
 157         options.config_root = options.portage_configroot
 158         if options.config_root is not None and \
 159                 not os.path.isdir(options.config_root):
 160                 parser.error("Not a directory: --config-root='%s'" % \
 161                         (options.config_root,))
 162
 163         if options.cache_dir is not None and not os.path.isdir(options.cache_dir):
 164                 parser.error("Not a directory: --cache-dir='%s'" % \
 165                         (options.cache_dir,))
 166
 167         for atom in args:
 168                 try:
 169                         atom = portage.dep.Atom(atom)
 170                 except portage.exception.InvalidAtom:
 171                         parser.error('Invalid atom: %s' % (atom,))
 172
 173                 if not isjustname(atom):
 174                         parser.error('Atom is too specific: %s' % (atom,))
 175
 176         if options.update_use_local_desc:
 177                 try:
 178                         ElementTree
 179                         ExpatError
 180                 except NameError:
 181                         parser.error('--update-use-local-desc requires python with USE=xml!')
 182
 183         if options.uld_output == '-' and options.preserve_comments:
 184                 parser.error('--preserve-comments can not be used when outputting to stdout')
 185
 186         return parser, options, args
 187
 188 class GenCache(object):
 189         def __init__(self, portdb, cp_iter=None, max_jobs=None, max_load=None,
 190                 rsync=False):
 191                 self._portdb = portdb
 192                 # We can globally cleanse stale cache only if we
 193                 # iterate over every single cp.
 194                 self._global_cleanse = cp_iter is None
 195                 if cp_iter is not None:
 196                         self._cp_set = set(cp_iter)
 197                         cp_iter = iter(self._cp_set)
 198                         self._cp_missing = self._cp_set.copy()
 199                 else:
 200                         self._cp_set = None
 201                         self._cp_missing = set()
 202                 self._regen = MetadataRegen(portdb, cp_iter=cp_iter,
 203                         consumer=self._metadata_callback,
 204                         max_jobs=max_jobs, max_load=max_load)
 205                 self.returncode = os.EX_OK
 206                 metadbmodule = portdb.settings.load_best_module("portdbapi.metadbmodule")
 207                 self._trg_cache = metadbmodule(portdb.porttrees[0],
 208                         "metadata/cache", portage.auxdbkeys[:])
 209                 if rsync:
 210                         self._trg_cache.raise_stat_collision = True
 211                 try:
 212                         self._trg_cache.ec = \
 213                                 portdb._repo_info[portdb.porttrees[0]].eclass_db
 214                 except AttributeError:
 215                         pass
 216                 self._existing_nodes = set()
 217
 218         def _metadata_callback(self, cpv, ebuild_path, repo_path, metadata):
 219                 self._existing_nodes.add(cpv)
 220                 self._cp_missing.discard(cpv_getkey(cpv))
 221                 if metadata is not None:
 222                         if metadata.get('EAPI') == '0':
 223                                 del metadata['EAPI']
 224                         try:
 225                                 try:
 226                                         self._trg_cache[cpv] = metadata
 227                                 except StatCollision as sc:
 228                                         # If the content of a cache entry changes and neither the
 229                                         # file mtime nor size changes, it will prevent rsync from
 230                                         # detecting changes. Cache backends may raise this
 231                                         # exception from _setitem() if they detect this type of stat
 232                                         # collision. These exceptions are handled by bumping the
 233                                         # mtime on the ebuild (and the corresponding cache entry).
 234                                         # See bug #139134.
 235                                         max_mtime = sc.mtime
 236                                         for ec, (loc, ec_mtime) in metadata['_eclasses_'].items():
 237                                                 if max_mtime < ec_mtime:
 238                                                         max_mtime = ec_mtime
 239                                         if max_mtime == sc.mtime:
 240                                                 max_mtime += 1
 241                                         max_mtime = long(max_mtime)
 242                                         try:
 243                                                 os.utime(ebuild_path, (max_mtime, max_mtime))
 244                                         except OSError as e:
 245                                                 self.returncode |= 1
 246                                                 writemsg_level(
 247                                                         "%s writing target: %s\n" % (cpv, e),
 248                                                         level=logging.ERROR, noiselevel=-1)
 249                                         else:
 250                                                 metadata['_mtime_'] = max_mtime
 251                                                 self._trg_cache[cpv] = metadata
 252                                                 self._portdb.auxdb[repo_path][cpv] = metadata
 253
 254                         except CacheError as ce:
 255                                 self.returncode |= 1
 256                                 writemsg_level(
 257                                         "%s writing target: %s\n" % (cpv, ce),
 258                                         level=logging.ERROR, noiselevel=-1)
 259
 260         def run(self):
 261
 262                 received_signal = []
 263
 264                 def sighandler(signum, frame):
 265                         signal.signal(signal.SIGINT, signal.SIG_IGN)
 266                         signal.signal(signal.SIGTERM, signal.SIG_IGN)
 267                         self._regen.terminate()
 268                         received_signal.append(128 + signum)
 269
 270                 earlier_sigint_handler = signal.signal(signal.SIGINT, sighandler)
 271                 earlier_sigterm_handler = signal.signal(signal.SIGTERM, sighandler)
 272
 273                 try:
 274                         self._regen.run()
 275                 finally:
 276                         # Restore previous handlers
 277                         if earlier_sigint_handler is not None:
 278                                 signal.signal(signal.SIGINT, earlier_sigint_handler)
 279                         else:
 280                                 signal.signal(signal.SIGINT, signal.SIG_DFL)
 281                         if earlier_sigterm_handler is not None:
 282                                 signal.signal(signal.SIGTERM, earlier_sigterm_handler)
 283                         else:
 284                                 signal.signal(signal.SIGTERM, signal.SIG_DFL)
 285
 286                 if received_signal:
 287                         sys.exit(received_signal[0])
 288
 289                 self.returncode |= self._regen.returncode
 290                 cp_missing = self._cp_missing
 291
 292                 trg_cache = self._trg_cache
 293                 dead_nodes = set()
 294                 if self._global_cleanse:
 295                         try:
 296                                 for cpv in trg_cache:
 297                                         cp = cpv_getkey(cpv)
 298                                         if cp is None:
 299                                                 self.returncode |= 1
 300                                                 writemsg_level(
 301                                                         "Unable to parse cp for '%s'\n"  % (cpv,),
 302                                                         level=logging.ERROR, noiselevel=-1)
 303                                         else:
 304                                                 dead_nodes.add(cpv)
 305                         except CacheError as ce:
 306                                 self.returncode |= 1
 307                                 writemsg_level(
 308                                         "Error listing cache entries for " + \
 309                                         "'%s/metadata/cache': %s, continuing...\n" % \
 310                                         (self._portdb.porttree_root, ce),
 311                                         level=logging.ERROR, noiselevel=-1)
 312
 313                 else:
 314                         cp_set = self._cp_set
 315                         try:
 316                                 for cpv in trg_cache:
 317                                         cp = cpv_getkey(cpv)
 318                                         if cp is None:
 319                                                 self.returncode |= 1
 320                                                 writemsg_level(
 321                                                         "Unable to parse cp for '%s'\n"  % (cpv,),
 322                                                         level=logging.ERROR, noiselevel=-1)
 323                                         else:
 324                                                 cp_missing.discard(cp)
 325                                                 if cp in cp_set:
 326                                                         dead_nodes.add(cpv)
 327                         except CacheError as ce:
 328                                 self.returncode |= 1
 329                                 writemsg_level(
 330                                         "Error listing cache entries for " + \
 331                                         "'%s/metadata/cache': %s, continuing...\n" % \
 332                                         (self._portdb.porttree_root, ce),
 333                                         level=logging.ERROR, noiselevel=-1)
 334
 335                 if cp_missing:
 336                         self.returncode |= 1
 337                         for cp in sorted(cp_missing):
 338                                 writemsg_level(
 339                                         "No ebuilds or cache entries found for '%s'\n"  % (cp,),
 340                                         level=logging.ERROR, noiselevel=-1)
 341
 342                 if dead_nodes:
 343                         dead_nodes.difference_update(self._existing_nodes)
 344                         for k in dead_nodes:
 345                                 try:
 346                                         del trg_cache[k]
 347                                 except KeyError:
 348                                         pass
 349                                 except CacheError as ce:
 350                                         self.returncode |= 1
 351                                         writemsg_level(
 352                                                 "%s deleting stale cache: %s\n" % (k, ce),
 353                                                 level=logging.ERROR, noiselevel=-1)
 354
 355                 if not trg_cache.autocommits:
 356                         try:
 357                                 trg_cache.commit()
 358                         except CacheError as ce:
 359                                 self.returncode |= 1
 360                                 writemsg_level(
 361                                         "committing target: %s\n" % (ce,),
 362                                         level=logging.ERROR, noiselevel=-1)
 363
 364 class GenUseLocalDesc(object):
 365         def __init__(self, portdb, output=None,
 366                         preserve_comments=False):
 367                 self.returncode = os.EX_OK
 368                 self._portdb = portdb
 369                 self._output = output
 370                 self._preserve_comments = preserve_comments
 371
 372         def run(self):
 373                 repo_path = self._portdb.porttrees[0]
 374                 ops = {'<':0, '<=':1, '=':2, '>=':3, '>':4}
 375
 376                 if self._output is None or self._output != '-':
 377                         if self._output is None:
 378                                 prof_path = os.path.join(repo_path, 'profiles')
 379                                 desc_path = os.path.join(prof_path, 'use.local.desc')
 380                                 try:
 381                                         os.mkdir(prof_path)
 382                                 except OSError:
 383                                         pass
 384                         else:
 385                                 desc_path = self._output
 386
 387                         try:
 388                                 if self._preserve_comments:
 389                                         # Probe in binary mode, in order to avoid
 390                                         # potential character encoding issues.
 391                                         output = open(_unicode_encode(desc_path,
 392                                                 encoding=_encodings['fs'], errors='strict'), 'r+b')
 393                                 else:
 394                                         output = codecs.open(_unicode_encode(desc_path,
 395                                                 encoding=_encodings['fs'], errors='strict'),
 396                                                 mode='w', encoding=_encodings['repo.content'],
 397                                                 errors='replace')
 398                         except IOError as e:
 399                                 writemsg_level(
 400                                         "ERROR: failed to open output file %s: %s\n" % (desc_path,e,),
 401                                         level=logging.ERROR, noiselevel=-1)
 402                                 self.returncode |= 2
 403                                 return
 404                 else:
 405                         output = sys.stdout
 406
 407                 if self._preserve_comments:
 408                         while True:
 409                                 pos = output.tell()
 410                                 if not output.readline().startswith(b'#'):
 411                                         break
 412                         output.seek(pos)
 413                         output.truncate()
 414                         output.close()
 415
 416                         # Finished probing comments in binary mode, now append
 417                         # in text mode.
 418                         output = codecs.open(_unicode_encode(desc_path,
 419                                 encoding=_encodings['fs'], errors='strict'),
 420                                 mode='a', encoding=_encodings['repo.content'],
 421                                 errors='replace')
 422                         output.write('\n')
 423                 else:
 424                         output.write('''
 425 # This file is deprecated as per GLEP 56 in favor of metadata.xml. Please add
 426 # your descriptions to your package's metadata.xml ONLY.
 427 # * generated automatically using egencache *
 428
 429 '''.lstrip())
 430
 431                 # The cmp function no longer exists in python3, so we'll
 432                 # implement our own here under a slightly different name
 433                 # since we don't want any confusion given that we never
 434                 # want to rely on the builtin cmp function.
 435                 def cmp_func(a, b):
 436                         return (a > b) - (a < b)
 437
 438                 for cp in self._portdb.cp_all():
 439                         metadata_path = os.path.join(repo_path, cp, 'metadata.xml')
 440                         try:
 441                                 metadata = ElementTree.parse(metadata_path)
 442                         except IOError:
 443                                 pass
 444                         except (ExpatError, EnvironmentError) as e:
 445                                 writemsg_level(
 446                                         "ERROR: failed parsing %s/metadata.xml: %s\n" % (cp, e),
 447                                         level=logging.ERROR, noiselevel=-1)
 448                                 self.returncode |= 1
 449                         else:
 450                                 try:
 451                                         usedict = parse_metadata_use(metadata)
 452                                 except portage.exception.ParseError as e:
 453                                         writemsg_level(
 454                                                 "ERROR: failed parsing %s/metadata.xml: %s\n" % (cp, e),
 455                                                 level=logging.ERROR, noiselevel=-1)
 456                                         self.returncode |= 1
 457                                 else:
 458                                         for flag in sorted(usedict):
 459                                                 def atomcmp(atoma, atomb):
 460                                                         # None is better than an atom, that's why we reverse the args
 461                                                         if atoma is None or atomb is None:
 462                                                                 return cmp_func(atomb, atoma)
 463                                                         # Same for plain PNs (.operator is None then)
 464                                                         elif atoma.operator is None or atomb.operator is None:
 465                                                                 return cmp_func(atomb.operator, atoma.operator)
 466                                                         # Version matching
 467                                                         elif atoma.cpv != atomb.cpv:
 468                                                                 return pkgcmp(pkgsplit(atoma.cpv), pkgsplit(atomb.cpv))
 469                                                         # Versions match, let's fallback to operator matching
 470                                                         else:
 471                                                                 return cmp_func(ops.get(atoma.operator, -1),
 472                                                                         ops.get(atomb.operator, -1))
 473
 474                                                 def _Atom(key):
 475                                                         if key is not None:
 476                                                                 return Atom(key)
 477                                                         return None
 478
 479                                                 resdict = usedict[flag]
 480                                                 if len(resdict) == 1:
 481                                                         resdesc = next(iter(resdict.items()))[1]
 482                                                 else:
 483                                                         try:
 484                                                                 reskeys = dict((_Atom(k), k) for k in resdict)
 485                                                         except portage.exception.InvalidAtom as e:
 486                                                                 writemsg_level(
 487                                                                         "ERROR: failed parsing %s/metadata.xml: %s\n" % (cp, e),
 488                                                                         level=logging.ERROR, noiselevel=-1)
 489                                                                 self.returncode |= 1
 490                                                                 resdesc = next(iter(resdict.items()))[1]
 491                                                         else:
 492                                                                 resatoms = sorted(reskeys, key=cmp_sort_key(atomcmp))
 493                                                                 resdesc = resdict[reskeys[resatoms[-1]]]
 494
 495                                                 output.write('%s:%s - %s\n' % (cp, flag, resdesc))
 496
 497                 output.close()
 498
 499 if sys.hexversion < 0x3000000:
 500         _filename_base = unicode
 501 else:
 502         _filename_base = str
 503
 504 class _special_filename(_filename_base):
 505         """
 506         Helps to sort file names by file type and other criteria.
 507         """
 508         def __new__(cls, status_change, file_name):
 509                 return _filename_base.__new__(cls, status_change + file_name)
 510
 511         def __init__(self, status_change, file_name):
 512                 _filename_base.__init__(status_change + file_name)
 513                 self.status_change = status_change
 514                 self.file_name = file_name
 515                 self.file_type = guessManifestFileType(file_name)
 516
 517         def file_type_lt(self, a, b):
 518                 """
 519                 Defines an ordering between file types.
 520                 """
 521                 first = a.file_type
 522                 second = b.file_type
 523                 if first == second:
 524                         return False
 525
 526                 if first == "EBUILD":
 527                         return True
 528                 elif first == "MISC":
 529                         return second in ("EBUILD",)
 530                 elif first == "AUX":
 531                         return second in ("EBUILD", "MISC")
 532                 elif first == "DIST":
 533                         return second in ("EBUILD", "MISC", "AUX")
 534                 elif first is None:
 535                         return False
 536                 else:
 537                         raise ValueError("Unknown file type '%s'" % first)
 538
 539         def __lt__(self, other):
 540                 """
 541                 Compare different file names, first by file type and then
 542                 for ebuilds by version and lexicographically for others.
 543                 EBUILD < MISC < AUX < DIST < None
 544                 """
 545                 if self.__class__ != other.__class__:
 546                         raise NotImplementedError
 547
 548                 # Sort by file type as defined by file_type_lt().
 549                 if self.file_type_lt(self, other):
 550                         return True
 551                 elif self.file_type_lt(other, self):
 552                         return False
 553
 554                 # Files have the same type.
 555                 if self.file_type == "EBUILD":
 556                         # Sort by version. Lowest first.
 557                         ver = "-".join(pkgsplit(self.file_name[:-7])[1:3])
 558                         other_ver = "-".join(pkgsplit(other.file_name[:-7])[1:3])
 559                         return vercmp(ver, other_ver) < 0
 560                 else:
 561                         # Sort lexicographically.
 562                         return self.file_name < other.file_name
 563
 564 class GenChangeLogs(object):
 565         def __init__(self, portdb):
 566                 self.returncode = os.EX_OK
 567                 self._portdb = portdb
 568                 self._wrapper = textwrap.TextWrapper(
 569                                 width = 78,
 570                                 initial_indent = '  ',
 571                                 subsequent_indent = '  '
 572                         )
 573
 574         @staticmethod
 575         def grab(cmd):
 576                 p = subprocess.Popen(cmd, stdout=subprocess.PIPE)
 577                 return _unicode_decode(p.communicate()[0],
 578                                 encoding=_encodings['stdio'], errors='strict')
 579
 580         def generate_changelog(self, cp):
 581                 try:
 582                         output = codecs.open('ChangeLog',
 583                                 mode='w', encoding=_encodings['repo.content'],
 584                                 errors='replace')
 585                 except IOError as e:
 586                         writemsg_level(
 587                                 "ERROR: failed to open ChangeLog for %s: %s\n" % (cp,e,),
 588                                 level=logging.ERROR, noiselevel=-1)
 589                         self.returncode |= 2
 590                         return
 591
 592                 output.write(('''
 593 # ChangeLog for %s
 594 # Copyright 1999-%s Gentoo Foundation; Distributed under the GPL v2
 595 # $Header: $
 596
 597 ''' % (cp, time.strftime('%Y'))).lstrip())
 598
 599                 # now grab all the commits
 600                 commits = self.grab(['git', 'rev-list', 'HEAD', '--', '.']).split()
 601
 602                 for c in commits:
 603                         # Explaining the arguments:
 604                         # --name-status to get a list of added/removed files
 605                         # --no-renames to avoid getting more complex records on the list
 606                         # --format to get the timestamp, author and commit description
 607                         # --root to make it work fine even with the initial commit
 608                         # --relative to get paths relative to ebuilddir
 609                         # -r (recursive) to get per-file changes
 610                         # then the commit-id and path.
 611
 612                         cinfo = self.grab(['git', 'diff-tree', '--name-status', '--no-renames',
 613                                         '--format=%ct %cN <%cE>%n%B', '--root', '--relative', '-r',
 614                                         c, '--', '.']).rstrip('\n').split('\n')
 615
 616                         # Expected output:
 617                         # timestamp Author Name <author@email>
 618                         # commit message l1
 619                         # ...
 620                         # commit message ln
 621                         #
 622                         # status1       filename1
 623                         # ...
 624                         # statusn       filenamen
 625
 626                         changed = []
 627                         for n, l in enumerate(reversed(cinfo)):
 628                                 if not l:
 629                                         body = cinfo[1:-n-1]
 630                                         break
 631                                 else:
 632                                         f = l.split()
 633                                         if f[1] == 'Manifest':
 634                                                 pass # XXX: remanifest commits?
 635                                         elif f[1] == 'ChangeLog':
 636                                                 pass
 637                                         elif f[0].startswith('A'):
 638                                                 changed.append(_special_filename("+", f[1]))
 639                                         elif f[0].startswith('D'):
 640                                                 changed.append(_special_filename("-", f[1]))
 641                                         elif f[0].startswith('M'):
 642                                                 changed.append(_special_filename("", f[1]))
 643                                         else:
 644                                                 writemsg_level(
 645                                                         "ERROR: unexpected git file status for %s: %s\n" % (cp,f,),
 646                                                         level=logging.ERROR, noiselevel=-1)
 647                                                 self.returncode |= 1
 648
 649                         if not changed:
 650                                 continue
 651
 652                         (ts, author) = cinfo[0].split(' ', 1)
 653                         date = time.strftime('%d %b %Y', time.gmtime(float(ts)))
 654
 655                         changed = [str(x) for x in sorted(changed)]
 656
 657                         wroteheader = False
 658                         # Reverse the sort order for headers.
 659                         for c in reversed(changed):
 660                                 if c.startswith('+') and c.endswith('.ebuild'):
 661                                         output.write('*%s (%s)\n' % (c[1:-7], date))
 662                                         wroteheader = True
 663                         if wroteheader:
 664                                 output.write('\n')
 665
 666                         # strip '<cp>: ', '[<cp>] ', and similar
 667                         body[0] = re.sub(r'^\W*' + re.escape(cp) + r'\W+', '', body[0])
 668                         # strip trailing newline
 669                         if not body[-1]:
 670                                 body = body[:-1]
 671                         # strip git-svn id
 672                         if body[-1].startswith('git-svn-id:') and not body[-2]:
 673                                 body = body[:-2]
 674                         # strip the repoman version/manifest note
 675                         if body[-1] == ' (Signed Manifest commit)' or body[-1] == ' (Unsigned Manifest commit)':
 676                                 body = body[:-1]
 677                         if body[-1].startswith('(Portage version:') and body[-1].endswith(')'):
 678                                 body = body[:-1]
 679                                 if not body[-1]:
 680                                         body = body[:-1]
 681
 682                         # don't break filenames on hyphens
 683                         self._wrapper.break_on_hyphens = False
 684                         output.write(self._wrapper.fill('%s; %s %s:' % (date, author, ', '.join(changed))))
 685                         # but feel free to break commit messages there
 686                         self._wrapper.break_on_hyphens = True
 687                         output.write('\n%s\n\n' % '\n'.join([self._wrapper.fill(x) for x in body]))
 688
 689                 output.close()
 690
 691         def run(self):
 692                 repo_path = self._portdb.porttrees[0]
 693                 os.chdir(repo_path)
 694
 695                 if 'git' not in FindVCS():
 696                         writemsg_level(
 697                                 "ERROR: --update-changelogs supported only in git repos\n",
 698                                 level=logging.ERROR, noiselevel=-1)
 699                         self.returncode = 127
 700                         return
 701
 702                 for cp in self._portdb.cp_all():
 703                         os.chdir(os.path.join(repo_path, cp))
 704                         # Determine whether ChangeLog is up-to-date by comparing
 705                         # the newest commit timestamp with the ChangeLog timestamp.
 706                         lmod = self.grab(['git', 'log', '--format=%ct', '-1', '.'])
 707                         if not lmod:
 708                                 # This cp has not been added to the repo.
 709                                 continue
 710
 711                         try:
 712                                 cmod = os.stat('ChangeLog').st_mtime
 713                         except OSError:
 714                                 cmod = 0
 715
 716                         if float(cmod) < float(lmod):
 717                                 self.generate_changelog(cp)
 718
 719 def egencache_main(args):
 720         parser, options, atoms = parse_args(args)
 721
 722         config_root = options.config_root
 723         if config_root is None:
 724                 config_root = '/'
 725
 726         # The calling environment is ignored, so the program is
 727         # completely controlled by commandline arguments.
 728         env = {}
 729
 730         if options.repo is None:
 731                 env['PORTDIR_OVERLAY'] = ''
 732
 733         if options.cache_dir is not None:
 734                 env['PORTAGE_DEPCACHEDIR'] = options.cache_dir
 735
 736         if options.portdir is not None:
 737                 env['PORTDIR'] = options.portdir
 738
 739         settings = portage.config(config_root=config_root,
 740                 target_root='/', local_config=False, env=env)
 741
 742         default_opts = None
 743         if not options.ignore_default_opts:
 744                 default_opts = settings.get('EGENCACHE_DEFAULT_OPTS', '').split()
 745
 746         if default_opts:
 747                 parser, options, args = parse_args(default_opts + args)
 748
 749                 if options.config_root is not None:
 750                         config_root = options.config_root
 751
 752                 if options.cache_dir is not None:
 753                         env['PORTAGE_DEPCACHEDIR'] = options.cache_dir
 754
 755                 settings = portage.config(config_root=config_root,
 756                         target_root='/', local_config=False, env=env)
 757
 758         if not options.update and not options.update_use_local_desc \
 759                         and not options.update_changelogs:
 760                 parser.error('No action specified')
 761                 return 1
 762
 763         if options.update and 'metadata-transfer' not in settings.features:
 764                 writemsg_level("ecachegen: warning: " + \
 765                         "automatically enabling FEATURES=metadata-transfer\n",
 766                         level=logging.WARNING, noiselevel=-1)
 767                 settings.features.add('metadata-transfer')
 768
 769         settings.lock()
 770
 771         portdb = portage.portdbapi(mysettings=settings)
 772         if options.repo is not None:
 773                 repo_path = portdb.getRepositoryPath(options.repo)
 774                 if repo_path is None:
 775                         parser.error("Unable to locate repository named '%s'" % \
 776                                 (options.repo,))
 777                         return 1
 778
 779                 # Limit ebuilds to the specified repo.
 780                 portdb.porttrees = [repo_path]
 781
 782         ret = [os.EX_OK]
 783
 784         if options.update:
 785                 cp_iter = None
 786                 if atoms:
 787                         cp_iter = iter(atoms)
 788
 789                 gen_cache = GenCache(portdb, cp_iter=cp_iter,
 790                         max_jobs=options.jobs,
 791                         max_load=options.load_average,
 792                         rsync=options.rsync)
 793                 gen_cache.run()
 794                 ret.append(gen_cache.returncode)
 795
 796         if options.update_use_local_desc:
 797                 gen_desc = GenUseLocalDesc(portdb,
 798                         output=options.uld_output,
 799                         preserve_comments=options.preserve_comments)
 800                 gen_desc.run()
 801                 ret.append(gen_desc.returncode)
 802
 803         if options.update_changelogs:
 804                 gen_clogs = GenChangeLogs(portdb)
 805                 gen_clogs.run()
 806                 ret.append(gen_clogs.returncode)
 807
 808         if options.tolerant:
 809                 return ret[0]
 810         return max(ret)
 811
 812 if __name__ == "__main__":
 813         portage._disable_legacy_globals()
 814         portage.util.noiselimit = -1
 815         sys.exit(egencache_main(sys.argv[1:]))