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=mbq=re.compile("\A(?P<name>\w+):(?P<branch>[\w\.]+)\Z")
 128     matcher_rpm_define=re.compile("%define\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         ### xxx cut this
 143         if self.branch:
 144             print 'Support for branches is experimental & disabled'
 145             sys.exit(1)
 146
 147     def edge_dir (self):
 148         if not self.branch:
 149             return "%s/trunk"%(self.moddir)
 150         else:
 151             return "%s/branches/%s"%(self.moddir,self.branch)
 152
 153     def run (self,command):
 154         return Command(command,self.options).run()
 155     def run_fatal (self,command):
 156         return Command(command,self.options).run_fatal()
 157     def run_prompt (self,message,command):
 158         if not self.options.verbose:
 159             question=message
 160         else:
 161             question="Want to run " + command
 162         if prompt(question,True):
 163             self.run(command)
 164
 165     @staticmethod
 166     def init_homedir (options):
 167         topdir=options.workdir
 168         if options.verbose:
 169             print 'Checking for',topdir
 170         storage="%s/%s"%(topdir,Module.config_storage)
 171         # sanity check. Either the topdir exists AND we have a config/storage
 172         # or topdir does not exist and we create it
 173         # to avoid people use their own daily svn repo
 174         if os.path.isdir(topdir) and not os.path.isfile(storage):
 175             print """The directory %s exists and has no CONFIG file
 176 If this is your regular working directory, please provide another one as the
 177 module-* commands need a fresh working dir. Make sure that you do not use
 178 that for other purposes than tagging"""%topdir
 179             sys.exit(1)
 180         if not os.path.isdir (topdir):
 181             print "Cannot find",topdir,"let's create it"
 182             Module.prompt_config()
 183             print "Checking ...",
 184             Command("svn co -N %s %s"%(Module.config['svnpath'],topdir),options).run_fatal()
 185             Command("svn co -N %s/%s %s/%s"%(Module.config['svnpath'],
 186                                              Module.config['build'],
 187                                              topdir,
 188                                              Module.config['build']),options).run_fatal()
 189             print "OK"
 190
 191             # store config
 192             f=file(storage,"w")
 193             for (key,message,default) in Module.configKeys:
 194                 f.write("%s=%s\n"%(key,Module.config[key]))
 195             f.close()
 196             if options.debug:
 197                 print 'Stored',storage
 198                 Command("cat %s"%storage,options).run()
 199         else:
 200             # read config
 201             f=open(storage)
 202             for line in f.readlines():
 203                 (key,value)=re.compile("^(.+)=(.+)$").match(line).groups()
 204                 Module.config[key]=value
 205             f.close()
 206         if options.verbose:
 207             print '******** Using config'
 208             for (key,message,default) in Module.configKeys:
 209                 print '\t',key,'=',Module.config[key]
 210
 211     def init_moddir (self):
 212         if self.options.verbose:
 213             print 'Checking for',self.moddir
 214         if not os.path.isdir (self.moddir):
 215             self.run_fatal("svn up -N %s"%self.moddir)
 216         if not os.path.isdir (self.moddir):
 217             print 'Cannot find %s - check module name'%self.moddir
 218             sys.exit(1)
 219
 220     def init_edge_dir (self):
 221         if self.options.verbose:
 222             print 'Checking for',self.edge_dir()
 223         # if branch, edge_dir is two steps down
 224         if self.branch:
 225             intermediate="%s/branches"%self.moddir
 226             if not os.path.isdir (intermediate):
 227                 self.run_fatal("svn up -N %s"%intermediate)
 228         if not os.path.isdir (self.edge_dir()):
 229             self.run_fatal("svn up -N %s"%self.edge_dir())
 230
 231     def revert_edge_dir (self):
 232         if self.options.verbose:
 233             print 'Checking whether',self.edge_dir(),'needs being reverted'
 234         if Svnpath(self.edge_dir(),self.options).dir_needs_revert():
 235             self.run_fatal("svn revert -R %s"%self.edge_dir())
 236
 237     def update_edge_dir (self):
 238         if self.options.fast_checks:
 239             return
 240         if self.options.verbose:
 241             print 'Updating',self.edge_dir()
 242         self.run_fatal("svn update -N %s"%self.edge_dir())
 243
 244     def main_specname (self):
 245         attempt="%s/%s.spec"%(self.edge_dir(),self.name)
 246         if os.path.isfile (attempt):
 247             return attempt
 248         else:
 249             try:
 250                 return glob("%s/*.spec"%self.edge_dir())[0]
 251             except:
 252                 print 'Cannot guess specfile for module %s'%self.name
 253                 sys.exit(1)
 254
 255     def all_specnames (self):
 256         return glob("%s/*.spec"%self.edge_dir())
 257
 258     def parse_spec (self, specfile, varnames):
 259         if self.options.debug:
 260             print 'parse_spec',specfile,
 261         result={}
 262         f=open(specfile)
 263         for line in f.readlines():
 264             attempt=Module.matcher_rpm_define.match(line)
 265             if attempt:
 266                 (var,value)=attempt.groups()
 267                 if var in varnames:
 268                     result[var]=value
 269         f.close()
 270         if self.options.verbose:
 271             print 'found',len(result),'keys'
 272         if self.options.debug:
 273             for (k,v) in result.iteritems():
 274                 print k,'=',v
 275         return result
 276
 277     # stores in self.module_name_varname the rpm variable to be used for the module's name
 278     # and the list of these names in self.varnames
 279     def spec_dict (self):
 280         specfile=self.main_specname()
 281         redirector_keys = [ varname for (varname,default) in Module.redirectors]
 282         redirect_dict = self.parse_spec(specfile,redirector_keys)
 283         if self.options.debug:
 284             print '1st pass parsing done, redirect_dict=',redirect_dict
 285         varnames=[]
 286         for (varname,default) in Module.redirectors:
 287             if redirect_dict.has_key(varname):
 288                 setattr(self,varname,redirect_dict[varname])
 289                 varnames += [redirect_dict[varname]]
 290             else:
 291                 setattr(self,varname,default)
 292                 varnames += [ default ]
 293         self.varnames = varnames
 294         result = self.parse_spec (specfile,self.varnames)
 295         if self.options.debug:
 296             print '2st pass parsing done, varnames=',varnames,'result=',result
 297         return result
 298
 299     def patch_spec_var (self, patch_dict):
 300         for specfile in self.all_specnames():
 301             newspecfile=specfile+".new"
 302             if self.options.verbose:
 303                 print 'Patching',specfile,'for',patch_dict.keys()
 304             spec=open (specfile)
 305             new=open(newspecfile,"w")
 306
 307             for line in spec.readlines():
 308                 attempt=Module.matcher_rpm_define.match(line)
 309                 if attempt:
 310                     (var,value)=attempt.groups()
 311                     if var in patch_dict.keys():
 312                         new.write('%%define %s %s\n'%(var,patch_dict[var]))
 313                         continue
 314                 new.write(line)
 315             spec.close()
 316             new.close()
 317             os.rename(newspecfile,specfile)
 318
 319     def unignored_lines (self, logfile):
 320         result=[]
 321         exclude="Tagging module %s"%self.name
 322         for logline in file(logfile).readlines():
 323             if logline.strip() == Module.svn_magic_line:
 324                 break
 325             if logline.find(exclude) < 0:
 326                 result += [ logline ]
 327         return result
 328
 329     def insert_changelog (self, logfile, oldtag, newtag):
 330         for specfile in self.all_specnames():
 331             newspecfile=specfile+".new"
 332             if self.options.verbose:
 333                 print 'Inserting changelog from %s into %s'%(logfile,specfile)
 334             spec=open (specfile)
 335             new=open(newspecfile,"w")
 336             for line in spec.readlines():
 337                 new.write(line)
 338                 if re.compile('%changelog').match(line):
 339                     dateformat="* %a %b %d %Y"
 340                     datepart=time.strftime(dateformat)
 341                     logpart="%s <%s> - %s %s"%(Module.config['username'],
 342                                                  Module.config['email'],
 343                                                  oldtag,newtag)
 344                     new.write(datepart+" "+logpart+"\n")
 345                     for logline in self.unignored_lines(logfile):
 346                         new.write("- " + logline)
 347                     new.write("\n")
 348             spec.close()
 349             new.close()
 350             os.rename(newspecfile,specfile)
 351
 352     def show_dict (self, spec_dict):
 353         if self.options.verbose:
 354             for (k,v) in spec_dict.iteritems():
 355                 print k,'=',v
 356
 357     def edge_url (self):
 358         if not self.branch:
 359             return "%s/%s/trunk"%(Module.config['svnpath'],self.name)
 360         else:
 361             return "%s/%s/branches/%s"%(Module.config['svnpath'],self.name,self.branch)
 362
 363     def tag_name (self, spec_dict):
 364         try:
 365             return "%s-%s-%s"%(#spec_dict[self.module_name_varname],
 366                 self.name,
 367                 spec_dict[self.module_version_varname],
 368                 spec_dict[self.module_taglevel_varname])
 369         except KeyError,err:
 370             print 'Something is wrong with module %s, cannot determine %s - exiting'%(self.name,err)
 371             sys.exit(1)
 372
 373     def tag_url (self, spec_dict):
 374         return "%s/%s/tags/%s"%(Module.config['svnpath'],self.name,self.tag_name(spec_dict))
 375
 376     def check_svnpath_exists (self, url, message):
 377         if self.options.fast_checks:
 378             return
 379         if self.options.verbose:
 380             print 'Checking url (%s) %s'%(url,message),
 381         ok=Svnpath(url,self.options).url_exists()
 382         if ok:
 383             if self.options.verbose: print 'exists - OK'
 384         else:
 385             if self.options.verbose: print 'KO'
 386             print 'Could not find %s URL %s'%(message,url)
 387             sys.exit(1)
 388     def check_svnpath_not_exists (self, url, message):
 389         if self.options.fast_checks:
 390             return
 391         if self.options.verbose:
 392             print 'Checking url (%s) %s'%(url,message),
 393         ok=not Svnpath(url,self.options).url_exists()
 394         if ok:
 395             if self.options.verbose: print 'does not exist - OK'
 396         else:
 397             if self.options.verbose: print 'KO'
 398             print '%s URL %s already exists - exiting'%(message,url)
 399             sys.exit(1)
 400
 401     # locate specfile, parse it, check it and show values
 402     def do_version (self):
 403         self.init_moddir()
 404         self.init_edge_dir()
 405         self.revert_edge_dir()
 406         self.update_edge_dir()
 407         print '==============================',self.name
 408         spec_dict = self.spec_dict()
 409         print 'edge url',self.edge_url()
 410         print 'latest tag url',self.tag_url(spec_dict)
 411         print 'main specfile:',self.main_specname()
 412         print 'specfiles:',self.all_specnames()
 413         for varname in self.varnames:
 414             if not spec_dict.has_key(varname):
 415                 print 'Could not find %%define for %s'%varname
 416                 return
 417             else:
 418                 print varname+":",spec_dict[varname]
 419
 420     init_warning="""WARNING
 421 The module-init function has the following limitations
 422 * it does not handle changelogs
 423 * it does not scan the -tags*.mk files to adopt the new tags"""
 424     def do_init(self):
 425         if self.options.verbose:
 426             print Module.init_warning
 427             if not prompt('Want to proceed anyway'):
 428                 return
 429
 430         self.init_moddir()
 431         self.init_edge_dir()
 432         self.revert_edge_dir()
 433         self.update_edge_dir()
 434         spec_dict = self.spec_dict()
 435
 436         edge_url=self.edge_url()
 437         tag_name=self.tag_name(spec_dict)
 438         tag_url=self.tag_url(spec_dict)
 439         # check the tag does not exist yet
 440         self.check_svnpath_not_exists(tag_url,"new tag")
 441
 442         if self.options.message:
 443             svnopt='--message "%s"'%self.options.message
 444         else:
 445             svnopt='--editor-cmd=%s'%self.options.editor
 446         self.run_prompt("Create initial tag",
 447                         "svn copy %s %s %s"%(svnopt,edge_url,tag_url))
 448
 449     def do_diff (self):
 450         self.init_moddir()
 451         self.init_edge_dir()
 452         self.revert_edge_dir()
 453         self.update_edge_dir()
 454         spec_dict = self.spec_dict()
 455         self.show_dict(spec_dict)
 456
 457         edge_url=self.edge_url()
 458         tag_url=self.tag_url(spec_dict)
 459         self.check_svnpath_exists(edge_url,"edge track")
 460         self.check_svnpath_exists(tag_url,"latest tag")
 461         diff_output = Command("svn diff %s %s"%(tag_url,edge_url),self.options).output_of()
 462         if self.options.list:
 463             if diff_output:
 464                 print self.name
 465         else:
 466             if not self.options.only or diff_output:
 467                 print 'x'*40,'module',self.name
 468                 print 'x'*20,'<',tag_url
 469                 print 'x'*20,'>',edge_url
 470                 print diff_output
 471
 472     def patch_tags_file (self, tagsfile, oldname, newname):
 473         newtagsfile=tagsfile+".new"
 474         if self.options.verbose:
 475             print 'Replacing %s into %s in %s'%(oldname,newname,tagsfile)
 476         tags=open (tagsfile)
 477         new=open(newtagsfile,"w")
 478         matcher=re.compile("^(.*)%s(.*)"%oldname)
 479         for line in tags.readlines():
 480             if not matcher.match(line):
 481                 new.write(line)
 482             else:
 483                 (begin,end)=matcher.match(line).groups()
 484                 new.write(begin+newname+end+"\n")
 485         tags.close()
 486         new.close()
 487         os.rename(newtagsfile,tagsfile)
 488
 489     def do_tag (self):
 490         self.init_moddir()
 491         self.init_edge_dir()
 492         self.revert_edge_dir()
 493         self.update_edge_dir()
 494         # parse specfile
 495         spec_dict = self.spec_dict()
 496         self.show_dict(spec_dict)
 497
 498         # side effects
 499         edge_url=self.edge_url()
 500         old_tag_name = self.tag_name(spec_dict)
 501         old_tag_url=self.tag_url(spec_dict)
 502         if (self.options.new_version):
 503             # new version set on command line
 504             spec_dict[self.module_version_varname] = self.options.new_version
 505             spec_dict[self.module_taglevel_varname] = 0
 506         else:
 507             # increment taglevel
 508             new_taglevel = str ( int (spec_dict[self.module_taglevel_varname]) + 1)
 509             spec_dict[self.module_taglevel_varname] = new_taglevel
 510
 511         # sanity check
 512         new_tag_name = self.tag_name(spec_dict)
 513         new_tag_url=self.tag_url(spec_dict)
 514         self.check_svnpath_exists (edge_url,"edge track")
 515         self.check_svnpath_exists (old_tag_url,"previous tag")
 516         self.check_svnpath_not_exists (new_tag_url,"new tag")
 517
 518         # checking for diffs
 519         diff_output=Command("svn diff %s %s"%(old_tag_url,edge_url),
 520                             self.options).output_of()
 521         if len(diff_output) == 0:
 522             if not prompt ("No difference in trunk for module %s, want to tag anyway"%self.name,False):
 523                 return
 524
 525         # side effect in trunk's specfile
 526         self.patch_spec_var(spec_dict)
 527
 528         # prepare changelog file
 529         # we use the standard subversion magic string (see svn_magic_line)
 530         # so we can provide useful information, such as version numbers and diff
 531         # in the same file
 532         changelog="/tmp/%s-%d.txt"%(self.name,os.getpid())
 533         file(changelog,"w").write("""Tagging module %s - %s
 534
 535 %s
 536 Please write a changelog for this new tag in the section above
 537 """%(self.name,new_tag_name,Module.svn_magic_line))
 538
 539         if not self.options.verbose or prompt('Want to see diffs while writing changelog',True):
 540             file(changelog,"a").write('DIFF=========\n' + diff_output)
 541
 542         if self.options.debug:
 543             prompt('Proceed ?')
 544
 545         # edit it
 546         self.run("%s %s"%(self.options.editor,changelog))
 547         # insert changelog in spec
 548         if self.options.changelog:
 549             self.insert_changelog (changelog,old_tag_name,new_tag_name)
 550
 551         ## update build
 552         try:
 553             buildname=Module.config['build']
 554         except:
 555             buildname="build"
 556         build = Module(buildname,self.options)
 557         build.init_moddir()
 558         build.init_edge_dir()
 559         build.revert_edge_dir()
 560         build.update_edge_dir()
 561
 562         for tagsfile in glob(build.edge_dir()+"/*-tags*.mk"):
 563             if prompt("Want to adopt new tag in %s"%tagsfile):
 564                 self.patch_tags_file(tagsfile,old_tag_name,new_tag_name)
 565
 566         paths=""
 567         paths += self.edge_dir() + " "
 568         paths += build.edge_dir() + " "
 569         self.run_prompt("Check","svn diff " + paths)
 570         self.run_prompt("Commit","svn commit --file %s %s"%(changelog,paths))
 571         self.run_prompt("Create tag","svn copy --file %s %s %s"%(changelog,edge_url,new_tag_url))
 572
 573         if self.options.debug:
 574             print 'Preserving',changelog
 575         else:
 576             os.unlink(changelog)
 577
 578 usage="""Usage: %prog options module_desc [ .. module_desc ]
 579 Purpose:
 580   manage subversion tags and specfile
 581   requires the specfile to define *version* and *taglevel*
 582   OR alternatively
 583   redirection variables module_version_varname / module_taglevel_varname
 584 Trunk:
 585   by default, the trunk of modules is taken into account
 586   in this case, just mention the module name as <module_desc>
 587 Branches:
 588   if you wish to work on a branch rather than on the trunk,
 589   you can use the following syntax for <module_desc>
 590   Mom:2.1
 591       works on Mom/branches/2.1
 592 """
 593 # unsupported yet
 594 #"""
 595 #  branch:Mom
 596 #      the branch_id is deduced from the current *version* in the trunk's specfile
 597 #      e.g. if Mom/trunk/Mom.spec specifies %define version 2.3, then this script
 598 #      would use Mom/branches/2.2
 599 #      if if stated %define version 3.0, then the script fails
 600 #"""
 601
 602 functions={
 603     'diff' : "show difference between trunk and latest tag",
 604     'tag'  : """increment taglevel in specfile, insert changelog in specfile,
 605                 create new tag and and adopt it in build/*-tags*.mk""",
 606     'init' : "create initial tag",
 607     'version' : "only check specfile and print out details"}
 608
 609 def main():
 610
 611     if sys.argv[0].find("diff") >= 0:
 612         mode = "diff"
 613     elif sys.argv[0].find("tag") >= 0:
 614         mode = "tag"
 615     elif sys.argv[0].find("init") >= 0:
 616         mode = "init"
 617     elif sys.argv[0].find("version") >= 0:
 618         mode = "version"
 619     else:
 620         print "Unsupported command",sys.argv[0]
 621         sys.exit(1)
 622
 623     global usage
 624     usage += "module-%s.py : %s"%(mode,functions[mode])
 625     all_modules=os.path.dirname(sys.argv[0])+"/modules.list"
 626
 627     parser=OptionParser(usage=usage,version=subversion_id)
 628     parser.add_option("-a","--all",action="store_true",dest="all_modules",default=False,
 629                       help="run on all modules as found in %s"%all_modules)
 630     parser.add_option("-f","--fast-checks",action="store_true",dest="fast_checks",default=False,
 631                       help="skip safety checks, such as svn updates -- use with care")
 632     if mode == "tag" :
 633         parser.add_option("-s","--set-version",action="store",dest="new_version",default=None,
 634                           help="set new version and reset taglevel to 0")
 635     if mode == "tag" :
 636         parser.add_option("-c","--no-changelog", action="store_false", dest="changelog", default=True,
 637                           help="do not update changelog section in specfile when tagging")
 638     if mode == "tag" or mode == "init" :
 639         parser.add_option("-e","--editor", action="store", dest="editor", default="emacs",
 640                           help="specify editor")
 641     if mode == "init" :
 642         parser.add_option("-m","--message", action="store", dest="message", default=None,
 643                           help="specify log message")
 644     if mode == "diff" :
 645         parser.add_option("-o","--only", action="store_true", dest="only", default=False,
 646                           help="report diff only for modules that exhibit differences")
 647     if mode == "diff" :
 648         parser.add_option("-l","--list", action="store_true", dest="list", default=False,
 649                           help="just list modules that exhibit differences")
 650     parser.add_option("-w","--workdir", action="store", dest="workdir",
 651                       default="%s/%s"%(os.getenv("HOME"),"modules"),
 652                       help="""name for dedicated working dir - defaults to ~/modules
 653 ** THIS MUST NOT ** be your usual working directory""")
 654     parser.add_option("-v","--verbose", action="store_true", dest="verbose", default=True,
 655                       help="run in verbose mode")
 656     parser.add_option("-q","--quiet", action="store_false", dest="verbose",
 657                       help="run in quiet (non-verbose) mode")
 658     parser.add_option("-d","--debug", action="store_true", dest="debug", default=False,
 659                       help="debug mode - mostly more verbose")
 660     (options, args) = parser.parse_args()
 661
 662     if len(args) == 0:
 663         if options.all_modules:
 664             args=Command("grep -v '#' %s"%all_modules,options).output_of().split()
 665         else:
 666             parser.print_help()
 667             sys.exit(1)
 668     Module.init_homedir(options)
 669     for modname in args:
 670         module=Module(modname,options)
 671         if sys.argv[0].find("diff") >= 0:
 672             module.do_diff()
 673         elif sys.argv[0].find("tag") >= 0:
 674             module.do_tag()
 675         elif sys.argv[0].find("init") >= 0:
 676             module.do_init()
 677         elif sys.argv[0].find("version") >= 0:
 678             module.do_version()
 679         else:
 680             print "Unsupported command",sys.argv[0]
 681             parser.print_help()
 682             sys.exit(1)
 683
 684 # basically, we exit if anything goes wrong
 685 if __name__ == "__main__" :
 686     main()