hgweb: refactor hgweb code
[ original upstream description ]
# keyword.py - $Keyword$ expansion for Mercurial## Copyright 2007, 2008 Christian Ebert <blacktrash@gmx.net>## This software may be used and distributed according to the terms# of the GNU General Public License, incorporated herein by reference.## $Id$## Keyword expansion hack against the grain of a DSCM## There are many good reasons why this is not needed in a distributed# SCM, still it may be useful in very small projects based on single# files (like LaTeX packages), that are mostly addressed to an audience# not running a version control system.## For in-depth discussion refer to# <http://www.selenic.com/mercurial/wiki/index.cgi/KeywordPlan>.## Keyword expansion is based on Mercurial's changeset template mappings.## Binary files are not touched.## Setup in hgrc:## [extensions]# # enable extension# keyword = /full/path/to/hgkw/keyword.py# # or, if script in canonical hgext folder:# # hgext.keyword =## Files to act upon/ignore are specified in the [keyword] section.# Customized keyword template mappings in the [keywordmaps] section.## Run "hg help keyword" and "hg kwdemo" to get info on configuration.'''keyword expansion in local repositoriesThis extension expands RCS/CVS-like or self-customized $Keywords$in tracked text files selected by your configuration.Keywords are only expanded in local repositories and not stored inthe change history. The mechanism can be regarded as a conveniencefor the current user or for archive distribution.Configuration is done in the [keyword] and [keywordmaps] sectionsof hgrc files.Example: [keyword] # expand keywords in every python file except those matching "x*" **.py = x* = ignoreNote: the more specific you are in your filename patterns the less you lose speed in huge repos.For [keywordmaps] template mapping and expansion demonstration andcontrol run "hg kwdemo".An additional date template filter {date|utcdate} is provided.The default template mappings (view with "hg kwdemo -d") can be replacedwith customized keywords and templates.Again, run "hg kwdemo" to control the results of your config changes.Before changing/disabling active keywords, run "hg kwshrink" to avoidthe risk of inadvertedly storing expanded keywords in the change history.To force expansion after enabling it, or a configuration change, run"hg kwexpand".Also, when committing with the record extension or using mq's qrecord, be awarethat keywords cannot be updated. Again, run "hg kwexpand" on the files inquestion to update keyword expansions after all changes have been checked in.Expansions spanning more than one line and incremental expansions,like CVS' $Log$, are not supported. A keyword template map"Log = {desc}" expands to the first line of the changeset description.'''frommercurialimportcommands,cmdutil,context,dispatch,filelog,revlogfrommercurialimportpatch,localrepo,templater,templatefilters,utilfrommercurial.hgwebimportwebcommandsfrommercurial.nodeimportnullid,hexfrommercurial.i18nimport_importre,shutil,tempfile,timecommands.optionalrepo+=' kwdemo'# hg commands that do not act on keywordsnokwcommands=('add addremove bundle copy export grep incoming init'' log outgoing push rename rollback tip'' convert email glog')# hg commands that trigger expansion only when writing to working dir,# not when reading filelog, and unexpand when reading from working dirrestricted='record qfold qimport qnew qpush qrefresh qrecord'defutcdate(date):'''Returns hgdate in cvs-like UTC format.'''returntime.strftime('%Y/%m/%d %H:%M:%S',time.gmtime(date[0]))# make keyword tools accessiblekwtools={'templater':None,'hgcmd':None}# store originals of monkeypatches_patchfile_init=patch.patchfile.__init___patch_diff=patch.diff_dispatch_parse=dispatch._parsedef_kwpatchfile_init(self,ui,fname,missing=False):'''Monkeypatch/wrap patch.patchfile.__init__ to avoid rejects or conflicts due to expanded keywords in working dir.'''_patchfile_init(self,ui,fname,missing=missing)# shrink keywords read from working dirkwt=kwtools['templater']self.lines=kwt.shrinklines(self.fname,self.lines)def_kw_diff(repo,node1=None,node2=None,files=None,match=util.always,fp=None,changes=None,opts=None):'''Monkeypatch patch.diff to avoid expansion except when comparing against working dir.'''ifnode2isnotNone:kwtools['templater'].matcher=util.neverelifnode1isnotNoneandnode1!=repo.changectx().node():kwtools['templater'].restrict=True_patch_diff(repo,node1=node1,node2=node2,files=files,match=match,fp=fp,changes=changes,opts=opts)# monkeypatching hgweb functions changeset and filediff# actual monkeypatching is done at the bottom of reposetup()web_changeset=webcommands.changesetweb_filediff=webcommands.filediffdef_kwweb_changeset(web,req,tmpl):'''Wraps webcommands.changeset turning off keyword expansion.'''kwtools['templater'].matcher=util.neverreturnweb_changeset(web,req,tmpl)def_kwweb_filediff(web,req,tmpl):'''Wraps webcommands.filediff turning off keyword expansion.'''kwtools['templater'].matcher=util.neverreturnweb_filediff(web,req,tmpl)def_kwdispatch_parse(ui,args):'''Monkeypatch dispatch._parse to obtain running hg command.'''cmd,func,args,options,cmdoptions=_dispatch_parse(ui,args)kwtools['hgcmd']=cmdreturncmd,func,args,options,cmdoptions# dispatch._parse is run before reposetup, so wrap it heredispatch._parse=_kwdispatch_parseclasskwtemplater(object):''' Sets up keyword templates, corresponding keyword regex, and provides keyword substitution functions. '''templates={'Revision':'{node|short}','Author':'{author|user}','Date':'{date|utcdate}','RCSFile':'{file|basename},v','Source':'{root}/{file},v','Id':'{file|basename},v {node|short} {date|utcdate} {author|user}','Header':'{root}/{file},v {node|short} {date|utcdate} {author|user}',}def__init__(self,ui,repo,inc,exc):self.ui=uiself.repo=repoself.matcher=util.matcher(repo.root,inc=inc,exc=exc)[1]self.restrict=kwtools['hgcmd']inrestricted.split()kwmaps=self.ui.configitems('keywordmaps')ifkwmaps:# override default templateskwmaps=[(k,templater.parsestring(v,quoted=False))for(k,v)inkwmaps]self.templates=dict(kwmaps)escaped=map(re.escape,self.templates.keys())kwpat=r'\$(%s)(: [^$\n\r]*? )??\$'%'|'.join(escaped)self.re_kw=re.compile(kwpat)templatefilters.filters['utcdate']=utcdateself.ct=cmdutil.changeset_templater(self.ui,self.repo,False,'',False)defgetnode(self,path,fnode):'''Derives changenode from file path and filenode.'''# used by kwfilelog.read and kwexpandc=context.filectx(self.repo,path,fileid=fnode)returnc.node()defsubstitute(self,data,path,node,subfunc):'''Replaces keywords in data with expanded template.'''defkwsub(mobj):kw=mobj.group(1)self.ct.use_template(self.templates[kw])self.ui.pushbuffer()self.ct.show(changenode=node,root=self.repo.root,file=path)ekw=templatefilters.firstline(self.ui.popbuffer())return'$%s: %s $'%(kw,ekw)returnsubfunc(kwsub,data)defexpand(self,path,node,data):'''Returns data with keywords expanded.'''ifnotself.restrictandself.matcher(path)andnotutil.binary(data):changenode=self.getnode(path,node)returnself.substitute(data,path,changenode,self.re_kw.sub)returndatadefiskwfile(self,path,islink):'''Returns true if path matches [keyword] pattern and is not a symbolic link. Caveat: localrepository._link fails on Windows.'''returnself.matcher(path)andnotislink(path)defoverwrite(self,node=None,expand=True,files=None):'''Overwrites selected files expanding/shrinking keywords.'''ctx=self.repo.changectx(node)mf=ctx.manifest()ifnodeisnotNone:# commitfiles=[fforfinctx.files()iffinmf]notify=self.ui.debugelse:# kwexpand/kwshrinknotify=self.ui.notecandidates=[fforfinfilesifself.iskwfile(f,mf.linkf)]ifcandidates:self.restrict=True# do not expand when readingcandidates.sort()action=expandand'expanding'or'shrinking'forfincandidates:fp=self.repo.file(f)data=fp.read(mf[f])ifutil.binary(data):continueifexpand:changenode=nodeorself.getnode(f,mf[f])data,found=self.substitute(data,f,changenode,self.re_kw.subn)else:found=self.re_kw.search(data)iffound:notify(_('overwriting %s%s keywords\n')%(f,action))self.repo.wwrite(f,data,mf.flags(f))self.repo.dirstate.normal(f)self.restrict=Falsedefshrinktext(self,text):'''Unconditionally removes all keyword substitutions from text.'''returnself.re_kw.sub(r'$\1$',text)defshrink(self,fname,text):'''Returns text with all keyword substitutions removed.'''ifself.matcher(fname)andnotutil.binary(text):returnself.shrinktext(text)returntextdefshrinklines(self,fname,lines):'''Returns lines with keyword substitutions removed.'''ifself.matcher(fname):text=''.join(lines)ifnotutil.binary(text):returnself.shrinktext(text).splitlines(True)returnlinesdefwread(self,fname,data):'''If in restricted mode returns data read from wdir with keyword substitutions removed.'''returnself.restrictandself.shrink(fname,data)ordataclasskwfilelog(filelog.filelog):''' Subclass of filelog to hook into its read, add, cmp methods. Keywords are "stored" unexpanded, and processed on reading. '''def__init__(self,opener,path):super(kwfilelog,self).__init__(opener,path)self.kwt=kwtools['templater']self.path=pathdefread(self,node):'''Expands keywords when reading filelog.'''data=super(kwfilelog,self).read(node)returnself.kwt.expand(self.path,node,data)defadd(self,text,meta,tr,link,p1=None,p2=None):'''Removes keyword substitutions when adding to filelog.'''text=self.kwt.shrink(self.path,text)returnsuper(kwfilelog,self).add(text,meta,tr,link,p1=p1,p2=p2)defcmp(self,node,text):'''Removes keyword substitutions for comparison.'''text=self.kwt.shrink(self.path,text)ifself.renamed(node):t2=super(kwfilelog,self).read(node)returnt2!=textreturnrevlog.revlog.cmp(self,node,text)def_status(ui,repo,kwt,*pats,**opts):'''Bails out if [keyword] configuration is not active. Returns status of working directory.'''ifkwt:files,match,anypats=cmdutil.matchpats(repo,pats,opts)returnrepo.status(files=files,match=match,list_clean=True)ifui.configitems('keyword'):raiseutil.Abort(_('[keyword] patterns cannot match'))raiseutil.Abort(_('no [keyword] patterns configured'))def_kwfwrite(ui,repo,expand,*pats,**opts):'''Selects files and passes them to kwtemplater.overwrite.'''kwt=kwtools['templater']status=_status(ui,repo,kwt,*pats,**opts)modified,added,removed,deleted,unknown,ignored,clean=statusifmodifiedoraddedorremovedordeleted:raiseutil.Abort(_('outstanding uncommitted changes in given files'))wlock=lock=Nonetry:wlock=repo.wlock()lock=repo.lock()kwt.overwrite(expand=expand,files=clean)finally:delwlock,lockdefdemo(ui,repo,*args,**opts):'''print [keywordmaps] configuration and an expansion example Show current, custom, or default keyword template maps and their expansion. Extend current configuration by specifying maps as arguments and optionally by reading from an additional hgrc file. Override current keyword template maps with "default" option. '''defdemostatus(stat):ui.status(_('\n\t%s\n')%stat)defdemoitems(section,items):ui.write('[%s]\n'%section)fork,vinitems:ui.write('%s = %s\n'%(k,v))msg='hg keyword config and expansion example'kwstatus='current'fn='demo.txt'branchname='demobranch'tmpdir=tempfile.mkdtemp('','kwdemo.')ui.note(_('creating temporary repo at %s\n')%tmpdir)repo=localrepo.localrepository(ui,path=tmpdir,create=True)ui.setconfig('keyword',fn,'')ifargsoropts.get('rcfile'):kwstatus='custom'ifopts.get('rcfile'):ui.readconfig(opts.get('rcfile'))ifopts.get('default'):kwstatus='default'kwmaps=kwtemplater.templatesifui.configitems('keywordmaps'):# override maps from optional rcfilefork,vinkwmaps.iteritems():ui.setconfig('keywordmaps',k,v)elifargs:# simulate hgrc parsingrcmaps=['[keywordmaps]\n']+[a+'\n'forainargs]fp=repo.opener('hgrc','w')fp.writelines(rcmaps)fp.close()ui.readconfig(repo.join('hgrc'))ifnotopts.get('default'):kwmaps=dict(ui.configitems('keywordmaps'))orkwtemplater.templatesreposetup(ui,repo)fork,vinui.configitems('extensions'):ifk.endswith('keyword'):extension='%s = %s'%(k,v)breakdemostatus('config using %s keyword template maps'%kwstatus)ui.write('[extensions]\n%s\n'%extension)demoitems('keyword',ui.configitems('keyword'))demoitems('keywordmaps',kwmaps.iteritems())keywords='$'+'$\n$'.join(kwmaps.keys())+'$\n'repo.wopener(fn,'w').write(keywords)repo.add([fn])path=repo.wjoin(fn)ui.note(_('\n%s keywords written to %s:\n')%(kwstatus,path))ui.note(keywords)ui.note('\nhg -R "%s" branch "%s"\n'%(tmpdir,branchname))# silence branch command if not verbosequiet=ui.quietui.quiet=notui.verbosecommands.branch(ui,repo,branchname)ui.quiet=quietforname,cmdinui.configitems('hooks'):ifname.split('.',1)[0].find('commit')>-1:repo.ui.setconfig('hooks',name,'')ui.note(_('unhooked all commit hooks\n'))ui.note('hg -R "%s" ci -m "%s"\n'%(tmpdir,msg))repo.commit(text=msg)format=ui.verboseand' in %s'%pathor''demostatus('%s keywords expanded%s'%(kwstatus,format))ui.write(repo.wread(fn))ui.debug(_('\nremoving temporary repo %s\n')%tmpdir)shutil.rmtree(tmpdir,ignore_errors=True)defexpand(ui,repo,*pats,**opts):'''expand keywords in working directory Run after (re)enabling keyword expansion. kwexpand refuses to run if given files contain local changes. '''# 3rd argument sets expansion to True_kwfwrite(ui,repo,True,*pats,**opts)deffiles(ui,repo,*pats,**opts):'''print files currently configured for keyword expansion Crosscheck which files in working directory are potential targets for keyword expansion. That is, files matched by [keyword] config patterns but not symlinks. '''kwt=kwtools['templater']status=_status(ui,repo,kwt,*pats,**opts)modified,added,removed,deleted,unknown,ignored,clean=statusfiles=modified+added+cleanifopts.get('untracked'):files+=unknownfiles.sort()wctx=repo.workingctx()islink=lambdap:'l'inwctx.fileflags(p)kwfiles=[fforfinfilesifkwt.iskwfile(f,islink)]cwd=patsandrepo.getcwd()or''kwfstats=notopts.get('ignore')and(('K',kwfiles),)or()ifopts.get('all')oropts.get('ignore'):kwfstats+=(('I',[fforfinfilesiffnotinkwfiles]),)forchar,filenamesinkwfstats:format=(opts.get('all')orui.verbose)and'%s%%s\n'%charor'%s\n'forfinfilenames:ui.write(format%repo.pathto(f,cwd))defshrink(ui,repo,*pats,**opts):'''revert expanded keywords in working directory Run before changing/disabling active keywords or if you experience problems with "hg import" or "hg merge". kwshrink refuses to run if given files contain local changes. '''# 3rd argument sets expansion to False_kwfwrite(ui,repo,False,*pats,**opts)defreposetup(ui,repo):'''Sets up repo as kwrepo for keyword substitution. Overrides file method to return kwfilelog instead of filelog if file matches user configuration. Wraps commit to overwrite configured files with updated keyword substitutions. This is done for local repos only, and only if there are files configured at all for keyword substitution.'''try:if(notrepo.local()orkwtools['hgcmd']innokwcommands.split()or'.hg'inutil.splitpath(repo.root)orrepo._url.startswith('bundle:')):returnexceptAttributeError:passinc,exc=[],['.hg*']forpat,optinui.configitems('keyword'):ifopt!='ignore':inc.append(pat)else:exc.append(pat)ifnotinc:returnkwtools['templater']=kwt=kwtemplater(ui,repo,inc,exc)classkwrepo(repo.__class__):deffile(self,f):iff[0]=='/':f=f[1:]returnkwfilelog(self.sopener,f)defwread(self,filename):data=super(kwrepo,self).wread(filename)returnkwt.wread(filename,data)defcommit(self,files=None,text='',user=None,date=None,match=util.always,force=False,force_editor=False,p1=None,p2=None,extra={},empty_ok=False):wlock=lock=None_p1=_p2=Nonetry:wlock=self.wlock()lock=self.lock()# store and postpone commit hookscommithooks={}forname,cmdinui.configitems('hooks'):ifname.split('.',1)[0]=='commit':commithooks[name]=cmdui.setconfig('hooks',name,None)ifcommithooks:# store parents for commit hook environmentifp1isNone:_p1,_p2=repo.dirstate.parents()else:_p1,_p2=p1,p2ornullid_p1=hex(_p1)if_p2==nullid:_p2=''else:_p2=hex(_p2)node=super(kwrepo,self).commit(files=files,text=text,user=user,date=date,match=match,force=force,force_editor=force_editor,p1=p1,p2=p2,extra=extra,empty_ok=empty_ok)# restore commit hooksforname,cmdincommithooks.iteritems():ui.setconfig('hooks',name,cmd)ifnodeisnotNone:kwt.overwrite(node=node)repo.hook('commit',node=node,parent1=_p1,parent2=_p2)returnnodefinally:delwlock,lockrepo.__class__=kwrepopatch.patchfile.__init__=_kwpatchfile_initpatch.diff=_kw_diffwebcommands.changeset=webcommands.rev=_kwweb_changesetwebcommands.filediff=webcommands.diff=_kwweb_filediffcmdtable={'kwdemo':(demo,[('d','default',None,_('show default keyword template maps')),('f','rcfile',[],_('read maps from rcfile'))],_('hg kwdemo [-d] [-f RCFILE] [TEMPLATEMAP]...')),'kwexpand':(expand,commands.walkopts,_('hg kwexpand [OPTION]... [FILE]...')),'kwfiles':(files,[('a','all',None,_('show keyword status flags of all files')),('i','ignore',None,_('show files excluded from expansion')),('u','untracked',None,_('additionally show untracked files')),]+commands.walkopts,_('hg kwfiles [OPTION]... [FILE]...')),'kwshrink':(shrink,commands.walkopts,_('hg kwshrink [OPTION]... [FILE]...')),}