module-tag.py

   1 #!/usr/bin/python -u
   2
   3 subversion_id = "$Id$"
   4
   5 import sys, os, os.path
   6 import re
   7 import time
   8 from glob import glob
   9 from optparse import OptionParser
  10
  11 def prompt (question,default=True):
  12     if default:
  13         question += " [y]/n ? "
  14     else:
  15         question += " y/[n] ? "
  16     try:
  17         answer=raw_input(question)
  18         if not answer:
  19             return default
  20         elif answer[0] in [ 'y','Y']:
  21             return True
  22         elif answer[0] in [ 'n','N']:
  23             return False
  24         else:
  25             return prompt(question,default)
  26     except KeyboardInterrupt:
  27         print "Aborted"
  28         return False
  29     except:
  30         raise
  31
  32 class Command:
  33     def __init__ (self,command,options):
  34         self.command=command
  35         self.options=options
  36         self.tmp="/tmp/command-%d"%os.getpid()
  37
  38     def run (self):
  39         if self.options.verbose:
  40             print '+',self.command
  41             sys.stdout.flush()
  42         return os.system(self.command)
  43
  44     def run_silent (self):
  45         if self.options.verbose:
  46             print '+',self.command,' .. ',
  47             sys.stdout.flush()
  48         retcod=os.system(self.command + " &> " + self.tmp)
  49         if retcod != 0:
  50             print "FAILED ! -- output quoted below "
  51             os.system("cat " + self.tmp)
  52             print "FAILED ! -- end of quoted output"
  53         elif self.options.verbose:
  54             print "OK"
  55         os.unlink(self.tmp)
  56         return retcod
  57
  58     def run_fatal(self):
  59         if self.run_silent() !=0:
  60             raise Exception,"Command %s failed"%self.command
  61
  62     # returns stdout, like bash's $(mycommand)
  63     def output_of (self,with_stderr=False):
  64         tmp="/tmp/status-%d"%os.getpid()
  65         if self.options.debug:
  66             print '+',self.command,' .. ',
  67             sys.stdout.flush()
  68         command=self.command
  69         if with_stderr:
  70             command += " &> "
  71         else:
  72             command += " > "
  73         command += tmp
  74         os.system(command)
  75         result=file(tmp).read()
  76         os.unlink(tmp)
  77         if self.options.debug:
  78             print 'Done',
  79         return result
  80
  81 class Svnpath:
  82     def __init__(self,path,options):
  83         self.path=path
  84         self.options=options
  85
  86     def url_exists (self):
  87         return os.system("svn list %s &> /dev/null"%self.path) == 0
  88
  89     def dir_needs_revert (self):
  90         command="svn status %s"%self.path
  91         return len(Command(command,self.options).output_of(True)) != 0
  92     # turns out it's the same implem.
  93     def file_needs_commit (self):
  94         command="svn status %s"%self.path
  95         return len(Command(command,self.options).output_of(True)) != 0
  96
  97 class Module:
  98
  99     svn_magic_line="--This line, and those below, will be ignored--"
 100
 101     redirectors=[ # ('module_name_varname','name'),
 102                   ('module_version_varname','version'),
 103                   ('module_taglevel_varname','taglevel'), ]
 104
 105     # where to store user's config
 106     config_storage="CONFIG"
 107     #
 108     config={}
 109
 110     import commands
 111     configKeys=[ ('svnpath',"Enter your toplevel svnpath",
 112                   "svn+ssh://%s@svn.planet-lab.org/svn/"%commands.getoutput("id -un")),
 113                  ("build", "Enter the name of your build module","build"),
 114                  ('username',"Enter your firstname and lastname for changelogs",""),
 115                  ("email","Enter your email address for changelogs",""),
 116                  ]
 117
 118     @staticmethod
 119     def prompt_config ():
 120         for (key,message,default) in Module.configKeys:
 121             Module.config[key]=""
 122             while not Module.config[key]:
 123                 Module.config[key]=raw_input("%s [%s] : "%(message,default)).strip() or default
 124
 125
 126     # for parsing module spec name:branch
 127     matcher_branch_spec=re.compile("\A(?P<name>[\w-]+):(?P<branch>[\w\.]+)\Z")
 128     matcher_rpm_define=re.compile("%(define|global)\s+(\S+)\s+(\S*)\s*")
 129
 130     def __init__ (self,module_spec,options):
 131         # parse module spec
 132         attempt=Module.matcher_branch_spec.match(module_spec)
 133         if attempt:
 134             self.name=attempt.group('name')
 135             self.branch=attempt.group('branch')
 136         else:
 137             self.name=module_spec
 138             self.branch=None
 139
 140         self.options=options
 141         self.moddir="%s/%s"%(options.workdir,self.name)
 142
 143     def edge_dir (self):
 144         if not self.branch:
 145             return "%s/trunk"%(self.moddir)
 146         else:
 147             return "%s/branches/%s"%(self.moddir,self.branch)
 148
 149     def tags_dir (self):
 150         return "%s/tags"%(self.moddir)
 151
 152     def run (self,command):
 153         return Command(command,self.options).run()
 154     def run_fatal (self,command):
 155         return Command(command,self.options).run_fatal()
 156     def run_prompt (self,message,command):
 157         if not self.options.verbose:
 158             question=message
 159         else:
 160             question="Want to run " + command
 161         if prompt(question,True):
 162             self.run(command)
 163
 164     @staticmethod
 165     def init_homedir (options):
 166         topdir=options.workdir
 167         if options.verbose:
 168             print 'Checking for',topdir
 169         storage="%s/%s"%(topdir,Module.config_storage)
 170         # sanity check. Either the topdir exists AND we have a config/storage
 171         # or topdir does not exist and we create it
 172         # to avoid people use their own daily svn repo
 173         if os.path.isdir(topdir) and not os.path.isfile(storage):
 174             print """The directory %s exists and has no CONFIG file
 175 If this is your regular working directory, please provide another one as the
 176 module-* commands need a fresh working dir. Make sure that you do not use
 177 that for other purposes than tagging"""%topdir
 178             sys.exit(1)
 179         if not os.path.isdir (topdir):
 180             print "Cannot find",topdir,"let's create it"
 181             Module.prompt_config()
 182             print "Checking ...",
 183             Command("svn co -N %s %s"%(Module.config['svnpath'],topdir),options).run_fatal()
 184             Command("svn co -N %s/%s %s/%s"%(Module.config['svnpath'],
 185                                              Module.config['build'],
 186                                              topdir,
 187                                              Module.config['build']),options).run_fatal()
 188             print "OK"
 189
 190             # store config
 191             f=file(storage,"w")
 192             for (key,message,default) in Module.configKeys:
 193                 f.write("%s=%s\n"%(key,Module.config[key]))
 194             f.close()
 195             if options.debug:
 196                 print 'Stored',storage
 197                 Command("cat %s"%storage,options).run()
 198         else:
 199             # read config
 200             f=open(storage)
 201             for line in f.readlines():
 202                 (key,value)=re.compile("^(.+)=(.+)$").match(line).groups()
 203                 Module.config[key]=value
 204             f.close()
 205         if options.verbose:
 206             print '******** Using config'
 207             for (key,message,default) in Module.configKeys:
 208                 print '\t',key,'=',Module.config[key]
 209
 210     def init_moddir (self):
 211         if self.options.verbose:
 212             print 'Checking for',self.moddir
 213         if not os.path.isdir (self.moddir):
 214             self.run_fatal("svn up -N %s"%self.moddir)
 215         if not os.path.isdir (self.moddir):
 216             print 'Cannot find %s - check module name'%self.moddir
 217             sys.exit(1)
 218
 219     def init_subdir (self,fullpath):
 220         if self.options.verbose:
 221             print 'Checking for',fullpath
 222         if not os.path.isdir (fullpath):
 223             self.run_fatal("svn up -N %s"%fullpath)
 224
 225     def revert_subdir (self,fullpath):
 226         if self.options.fast_checks:
 227             if self.options.verbose: print 'Skipping revert of %s'%fullpath
 228             return
 229         if self.options.verbose:
 230             print 'Checking whether',fullpath,'needs being reverted'
 231         if Svnpath(fullpath,self.options).dir_needs_revert():
 232             self.run_fatal("svn revert -R %s"%fullpath)
 233
 234     def update_subdir (self,fullpath):
 235         if self.options.fast_checks:
 236             if self.options.verbose: print 'Skipping update of %s'%fullpath
 237             return
 238         if self.options.verbose:
 239             print 'Updating',fullpath
 240         self.run_fatal("svn update -N %s"%fullpath)
 241
 242     def init_edge_dir (self):
 243         # if branch, edge_dir is two steps down
 244         if self.branch:
 245             self.init_subdir("%s/branches"%self.moddir)
 246         self.init_subdir(self.edge_dir())
 247
 248     def revert_edge_dir (self):
 249         self.revert_subdir(self.edge_dir())
 250
 251     def update_edge_dir (self):
 252         self.update_subdir(self.edge_dir())
 253
 254     def main_specname (self):
 255         attempt="%s/%s.spec"%(self.edge_dir(),self.name)
 256         if os.path.isfile (attempt):
 257             return attempt
 258         else:
 259             try:
 260                 return glob("%s/*.spec"%self.edge_dir())[0]
 261             except:
 262                 print 'Cannot guess specfile for module %s'%self.name
 263                 sys.exit(1)
 264
 265     def all_specnames (self):
 266         return glob("%s/*.spec"%self.edge_dir())
 267
 268     def parse_spec (self, specfile, varnames):
 269         if self.options.verbose:
 270             print 'Parsing',specfile,
 271             for var in varnames:
 272                 print "[%s]"%var,
 273             print ""
 274         result={}
 275         f=open(specfile)
 276         for line in f.readlines():
 277             attempt=Module.matcher_rpm_define.match(line)
 278             if attempt:
 279                 (define,var,value)=attempt.groups()
 280                 if var in varnames:
 281                     result[var]=value
 282         f.close()
 283         if self.options.debug:
 284             print 'found',len(result),'keys'
 285             for (k,v) in result.iteritems():
 286                 print k,'=',v
 287         return result
 288
 289     # stores in self.module_name_varname the rpm variable to be used for the module's name
 290     # and the list of these names in self.varnames
 291     def spec_dict (self):
 292         specfile=self.main_specname()
 293         redirector_keys = [ varname for (varname,default) in Module.redirectors]
 294         redirect_dict = self.parse_spec(specfile,redirector_keys)
 295         if self.options.debug:
 296             print '1st pass parsing done, redirect_dict=',redirect_dict
 297         varnames=[]
 298         for (varname,default) in Module.redirectors:
 299             if redirect_dict.has_key(varname):
 300                 setattr(self,varname,redirect_dict[varname])
 301                 varnames += [redirect_dict[varname]]
 302             else:
 303                 setattr(self,varname,default)
 304                 varnames += [ default ]
 305         self.varnames = varnames
 306         result = self.parse_spec (specfile,self.varnames)
 307         if self.options.debug:
 308             print '2st pass parsing done, varnames=',varnames,'result=',result
 309         return result
 310
 311     def patch_spec_var (self, patch_dict):
 312         for specfile in self.all_specnames():
 313             newspecfile=specfile+".new"
 314             if self.options.verbose:
 315                 print 'Patching',specfile,'for',patch_dict.keys()
 316             spec=open (specfile)
 317             new=open(newspecfile,"w")
 318
 319             for line in spec.readlines():
 320                 attempt=Module.matcher_rpm_define.match(line)
 321                 if attempt:
 322                     (define,var,value)=attempt.groups()
 323                     if var in patch_dict.keys():
 324                         new.write('%%%s %s %s\n'%(define,var,patch_dict[var]))
 325                         continue
 326                 new.write(line)
 327             spec.close()
 328             new.close()
 329             os.rename(newspecfile,specfile)
 330
 331     def unignored_lines (self, logfile):
 332         result=[]
 333         exclude="Tagging module %s"%self.name
 334         for logline in file(logfile).readlines():
 335             if logline.strip() == Module.svn_magic_line:
 336                 break
 337             if logline.find(exclude) < 0:
 338                 result += [ logline ]
 339         return result
 340
 341     def insert_changelog (self, logfile, oldtag, newtag):
 342         for specfile in self.all_specnames():
 343             newspecfile=specfile+".new"
 344             if self.options.verbose:
 345                 print 'Inserting changelog from %s into %s'%(logfile,specfile)
 346             spec=open (specfile)
 347             new=open(newspecfile,"w")
 348             for line in spec.readlines():
 349                 new.write(line)
 350                 if re.compile('%changelog').match(line):
 351                     dateformat="* %a %b %d %Y"
 352                     datepart=time.strftime(dateformat)
 353                     logpart="%s <%s> - %s %s"%(Module.config['username'],
 354                                                  Module.config['email'],
 355                                                  oldtag,newtag)
 356                     new.write(datepart+" "+logpart+"\n")
 357                     for logline in self.unignored_lines(logfile):
 358                         new.write("- " + logline)
 359                     new.write("\n")
 360             spec.close()
 361             new.close()
 362             os.rename(newspecfile,specfile)
 363
 364     def show_dict (self, spec_dict):
 365         if self.options.verbose:
 366             for (k,v) in spec_dict.iteritems():
 367                 print k,'=',v
 368
 369     def mod_url (self):
 370         return "%s/%s"%(Module.config['svnpath'],self.name)
 371
 372     def edge_url (self):
 373         if not self.branch:
 374             return "%s/trunk"%(self.mod_url())
 375         else:
 376             return "%s/branches/%s"%(self.mod_url(),self.branch)
 377
 378     def tag_name (self, spec_dict):
 379         try:
 380             return "%s-%s-%s"%(#spec_dict[self.module_name_varname],
 381                 self.name,
 382                 spec_dict[self.module_version_varname],
 383                 spec_dict[self.module_taglevel_varname])
 384         except KeyError,err:
 385             print 'Something is wrong with module %s, cannot determine %s - exiting'%(self.name,err)
 386             sys.exit(1)
 387
 388     def tag_url (self, spec_dict):
 389         return "%s/tags/%s"%(self.mod_url(),self.tag_name(spec_dict))
 390
 391     def check_svnpath_exists (self, url, message):
 392         if self.options.fast_checks:
 393             return
 394         if self.options.verbose:
 395             print 'Checking url (%s) %s'%(url,message),
 396         ok=Svnpath(url,self.options).url_exists()
 397         if ok:
 398             if self.options.verbose: print 'exists - OK'
 399         else:
 400             if self.options.verbose: print 'KO'
 401             print 'Could not find %s URL %s'%(message,url)
 402             sys.exit(1)
 403     def check_svnpath_not_exists (self, url, message):
 404         if self.options.fast_checks:
 405             return
 406         if self.options.verbose:
 407             print 'Checking url (%s) %s'%(url,message),
 408         ok=not Svnpath(url,self.options).url_exists()
 409         if ok:
 410             if self.options.verbose: print 'does not exist - OK'
 411         else:
 412             if self.options.verbose: print 'KO'
 413             print '%s URL %s already exists - exiting'%(message,url)
 414             sys.exit(1)
 415
 416     # locate specfile, parse it, check it and show values
 417 ##############################
 418     def do_version (self):
 419         self.init_moddir()
 420         self.init_edge_dir()
 421         self.revert_edge_dir()
 422         self.update_edge_dir()
 423         spec_dict = self.spec_dict()
 424         for varname in self.varnames:
 425             if not spec_dict.has_key(varname):
 426                 print 'Could not find %%define for %s'%varname
 427                 return
 428             else:
 429                 print varname+":",spec_dict[varname]
 430         print 'edge url',self.edge_url()
 431         print 'latest tag url',self.tag_url(spec_dict)
 432         if self.options.verbose:
 433             print 'main specfile:',self.main_specname()
 434             print 'specfiles:',self.all_specnames()
 435
 436     init_warning="""WARNING
 437 The module-init function has the following limitations
 438 * it does not handle changelogs
 439 * it does not scan the -tags*.mk files to adopt the new tags"""
 440 ##############################
 441     def do_init(self):
 442         if self.options.verbose:
 443             print Module.init_warning
 444             if not prompt('Want to proceed anyway'):
 445                 return
 446
 447         self.init_moddir()
 448         self.init_edge_dir()
 449         self.revert_edge_dir()
 450         self.update_edge_dir()
 451         spec_dict = self.spec_dict()
 452
 453         edge_url=self.edge_url()
 454         tag_name=self.tag_name(spec_dict)
 455         tag_url=self.tag_url(spec_dict)
 456         # check the tag does not exist yet
 457         self.check_svnpath_not_exists(tag_url,"new tag")
 458
 459         if self.options.message:
 460             svnopt='--message "%s"'%self.options.message
 461         else:
 462             svnopt='--editor-cmd=%s'%self.options.editor
 463         self.run_prompt("Create initial tag",
 464                         "svn copy %s %s %s"%(svnopt,edge_url,tag_url))
 465
 466 ##############################
 467     def do_diff (self):
 468         self.init_moddir()
 469         self.init_edge_dir()
 470         self.revert_edge_dir()
 471         self.update_edge_dir()
 472         spec_dict = self.spec_dict()
 473         self.show_dict(spec_dict)
 474
 475         edge_url=self.edge_url()
 476         tag_url=self.tag_url(spec_dict)
 477         self.check_svnpath_exists(edge_url,"edge track")
 478         self.check_svnpath_exists(tag_url,"latest tag")
 479         diff_output = Command("svn diff %s %s"%(tag_url,edge_url),self.options).output_of()
 480         if self.options.list:
 481             if diff_output:
 482                 print self.name
 483         else:
 484             if not self.options.only or diff_output:
 485                 print 'x'*40,'module',self.name
 486                 print 'x'*20,'<',tag_url
 487                 print 'x'*20,'>',edge_url
 488                 print diff_output
 489
 490 ##############################
 491     def patch_tags_file (self, tagsfile, oldname, newname):
 492         newtagsfile=tagsfile+".new"
 493         if self.options.verbose:
 494             print 'Replacing %s into %s in %s'%(oldname,newname,tagsfile)
 495         tags=open (tagsfile)
 496         new=open(newtagsfile,"w")
 497         matcher=re.compile("^(.*)%s(.*)"%oldname)
 498         for line in tags.readlines():
 499             if not matcher.match(line):
 500                 new.write(line)
 501             else:
 502                 (begin,end)=matcher.match(line).groups()
 503                 new.write(begin+newname+end+"\n")
 504         tags.close()
 505         new.close()
 506         os.rename(newtagsfile,tagsfile)
 507
 508     def do_tag (self):
 509         self.init_moddir()
 510         self.init_edge_dir()
 511         self.revert_edge_dir()
 512         self.update_edge_dir()
 513         # parse specfile
 514         spec_dict = self.spec_dict()
 515         self.show_dict(spec_dict)
 516
 517         # side effects
 518         edge_url=self.edge_url()
 519         old_tag_name = self.tag_name(spec_dict)
 520         old_tag_url=self.tag_url(spec_dict)
 521         if (self.options.new_version):
 522             # new version set on command line
 523             spec_dict[self.module_version_varname] = self.options.new_version
 524             spec_dict[self.module_taglevel_varname] = 0
 525         else:
 526             # increment taglevel
 527             new_taglevel = str ( int (spec_dict[self.module_taglevel_varname]) + 1)
 528             spec_dict[self.module_taglevel_varname] = new_taglevel
 529
 530         # sanity check
 531         new_tag_name = self.tag_name(spec_dict)
 532         new_tag_url=self.tag_url(spec_dict)
 533         self.check_svnpath_exists (edge_url,"edge track")
 534         self.check_svnpath_exists (old_tag_url,"previous tag")
 535         self.check_svnpath_not_exists (new_tag_url,"new tag")
 536
 537         # checking for diffs
 538         diff_output=Command("svn diff %s %s"%(old_tag_url,edge_url),
 539                             self.options).output_of()
 540         if len(diff_output) == 0:
 541             if not prompt ("No difference in trunk for module %s, want to tag anyway"%self.name,False):
 542                 return
 543
 544         # side effect in trunk's specfile
 545         self.patch_spec_var(spec_dict)
 546
 547         # prepare changelog file
 548         # we use the standard subversion magic string (see svn_magic_line)
 549         # so we can provide useful information, such as version numbers and diff
 550         # in the same file
 551         changelog="/tmp/%s-%d.txt"%(self.name,os.getpid())
 552         file(changelog,"w").write("""Tagging module %s - %s
 553
 554 %s
 555 Please write a changelog for this new tag in the section above
 556 """%(self.name,new_tag_name,Module.svn_magic_line))
 557
 558         if not self.options.verbose or prompt('Want to see diffs while writing changelog',True):
 559             file(changelog,"a").write('DIFF=========\n' + diff_output)
 560
 561         if self.options.debug:
 562             prompt('Proceed ?')
 563
 564         # edit it
 565         self.run("%s %s"%(self.options.editor,changelog))
 566         # insert changelog in spec
 567         if self.options.changelog:
 568             self.insert_changelog (changelog,old_tag_name,new_tag_name)
 569
 570         ## update build
 571         try:
 572             buildname=Module.config['build']
 573         except:
 574             buildname="build"
 575         build = Module(buildname,self.options)
 576         build.init_moddir()
 577         build.init_edge_dir()
 578         build.revert_edge_dir()
 579         build.update_edge_dir()
 580
 581         for tagsfile in glob(build.edge_dir()+"/*-tags*.mk"):
 582             if prompt("Want to adopt new tag in %s"%tagsfile):
 583                 self.patch_tags_file(tagsfile,old_tag_name,new_tag_name)
 584
 585         paths=""
 586         paths += self.edge_dir() + " "
 587         paths += build.edge_dir() + " "
 588         self.run_prompt("Check","svn diff " + paths)
 589         self.run_prompt("Commit","svn commit --file %s %s"%(changelog,paths))
 590         self.run_prompt("Create tag","svn copy --file %s %s %s"%(changelog,edge_url,new_tag_url))
 591
 592         if self.options.debug:
 593             print 'Preserving',changelog
 594         else:
 595             os.unlink(changelog)
 596
 597 ##############################
 598     def do_branch (self):
 599
 600         print 'module-branch is experimental - exiting'
 601         sys.exit(1)
 602
 603         if self.branch:
 604             print 'Cannot create a branch from another branch - exiting'
 605             sys.exit(1)
 606         self.init_moddir()
 607
 608         # xxx - tmp
 609         import readline
 610         answer = raw_input ("enter tag name [trunk]").strip()
 611         if answer == "" or answer == "trunk":
 612             ref="/trunk"
 613             from_trunk=True
 614         else:
 615             ref="/tags/%s-%s"%(self.name,answer)
 616             from_trunk=False
 617
 618         ref_url = "%s/%s"%(self.mod_url(),ref)
 619         self.check_svnpath_exists (ref_url,"branch creation point")
 620         print "Using starting point %s"%ref_url
 621
 622         spec=self.main_specname()
 623         if not from_trunk:
 624             self.init_subdir(self.tags_dir())
 625             workdir="%s/%s"%(self.moddir,ref)
 626         else:
 627             workdir=self.edge_dir()
 628
 629         self.init_subdir(workdir)
 630         self.revert_subdir(workdir)
 631         self.update_subdir(workdir)
 632
 633         print 'got spec',spec
 634         if not os.path.isfile(spec):
 635             print 'cannot find spec'
 636
 637         # read version & taglevel from the origin specfile
 638         print 'parsing',spec
 639         origin=self.spec_dict()
 640         self.show_dict(origin)
 641
 642         default_branch=self.options.new_version
 643         if not default_branch:
 644 #            try:
 645                 match=re.compile("\A(?P<main>.*[\.-_])(?P<subid>[0-9]+)\Z").match(origin['version'])
 646                 new_subid=int(match.group('subid'))+1
 647                 default_branch="%s%d"%(match.group('main'),new_subid)
 648 #            except:
 649 #                default_branch="not found"
 650         new_branch_name=raw_input("Enter branch name [%s] "%default_branch) or default_branch
 651
 652         new_branch_url="%s/branches/%s"%(self.mod_url(),new_branch_name)
 653         self.check_svnpath_not_exists(new_branch_url,"new branch")
 654         print new_branch_name
 655
 656
 657 ##############################
 658 usage="""Usage: %prog options module_desc [ .. module_desc ]
 659 Purpose:
 660   manage subversion tags and specfile
 661   requires the specfile to define *version* and *taglevel*
 662   OR alternatively
 663   redirection variables module_version_varname / module_taglevel_varname
 664 Trunk:
 665   by default, the trunk of modules is taken into account
 666   in this case, just mention the module name as <module_desc>
 667 Branches:
 668   if you wish to work on a branch rather than on the trunk,
 669   you can use the following syntax for <module_desc>
 670   Mom:2.1
 671       works on Mom/branches/2.1
 672 """
 673 # unsupported yet
 674 #"""
 675 #  branch:Mom
 676 #      the branch_id is deduced from the current *version* in the trunk's specfile
 677 #      e.g. if Mom/trunk/Mom.spec specifies %define version 2.3, then this script
 678 #      would use Mom/branches/2.2
 679 #      if if stated %define version 3.0, then the script fails
 680 #"""
 681
 682 functions={
 683     'diff' : "show difference between trunk and latest tag",
 684     'tag'  : """increment taglevel in specfile, insert changelog in specfile,
 685                 create new tag and and adopt it in build/*-tags*.mk""",
 686     'init' : "create initial tag",
 687     'version' : "only check specfile and print out details",
 688     'branch' : """create a branch for this module.
 689                 either from trunk, or from a tag""",
 690 }
 691
 692 def main():
 693
 694     mode=None
 695     for function in functions.keys():
 696         if sys.argv[0].find(function) >= 0:
 697             mode = function
 698             break
 699     if not mode:
 700         print "Unsupported command",sys.argv[0]
 701         sys.exit(1)
 702
 703     global usage
 704     usage += "module-%s.py : %s"%(mode,functions[mode])
 705     all_modules=os.path.dirname(sys.argv[0])+"/modules.list"
 706
 707     parser=OptionParser(usage=usage,version=subversion_id)
 708     parser.add_option("-a","--all",action="store_true",dest="all_modules",default=False,
 709                       help="run on all modules as found in %s"%all_modules)
 710     parser.add_option("-f","--fast-checks",action="store_true",dest="fast_checks",default=False,
 711                       help="skip safety checks, such as svn updates -- use with care")
 712     if mode == "tag" or mode == 'branch':
 713         parser.add_option("-s","--set-version",action="store",dest="new_version",default=None,
 714                           help="set new version and reset taglevel to 0")
 715     if mode == "tag" :
 716         parser.add_option("-c","--no-changelog", action="store_false", dest="changelog", default=True,
 717                           help="do not update changelog section in specfile when tagging")
 718     if mode == "tag" or mode == "init" :
 719         parser.add_option("-e","--editor", action="store", dest="editor", default="emacs",
 720                           help="specify editor")
 721     if mode == "init" :
 722         parser.add_option("-m","--message", action="store", dest="message", default=None,
 723                           help="specify log message")
 724     if mode == "diff" :
 725         parser.add_option("-o","--only", action="store_true", dest="only", default=False,
 726                           help="report diff only for modules that exhibit differences")
 727     if mode == "diff" :
 728         parser.add_option("-l","--list", action="store_true", dest="list", default=False,
 729                           help="just list modules that exhibit differences")
 730     parser.add_option("-w","--workdir", action="store", dest="workdir",
 731                       default="%s/%s"%(os.getenv("HOME"),"modules"),
 732                       help="""name for dedicated working dir - defaults to ~/modules
 733 ** THIS MUST NOT ** be your usual working directory""")
 734     parser.add_option("-v","--verbose", action="store_true", dest="verbose", default=True,
 735                       help="run in verbose mode")
 736     parser.add_option("-q","--quiet", action="store_false", dest="verbose",
 737                       help="run in quiet (non-verbose) mode")
 738     parser.add_option("-d","--debug", action="store_true", dest="debug", default=False,
 739                       help="debug mode - mostly more verbose")
 740     (options, args) = parser.parse_args()
 741
 742     if len(args) == 0:
 743         if options.all_modules:
 744             args=Command("grep -v '#' %s"%all_modules,options).output_of().split()
 745         else:
 746             parser.print_help()
 747             sys.exit(1)
 748     Module.init_homedir(options)
 749     for modname in args:
 750         module=Module(modname,options)
 751         print '==============================',module.name
 752         # call the method called do_<mode>
 753         method=Module.__dict__["do_%s"%mode]
 754         method(module)
 755
 756 # basically, we exit if anything goes wrong
 757 if __name__ == "__main__" :
 758     main()