hgk: wrap docstrings at 70 characters

hgext/hgk.py

@@ -1,346 +1,347 b''
 # Minimal support for git commands on an hg repository
 #
 # Copyright 2005, 2006 Chris Mason <[e-mail]>
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2, incorporated herein by reference.
 
 '''browse the repository in a graphical way
 
-The hgk extension allows browsing the history of a repository in a graphical
-way. It requires Tcl/Tk version 8.4 or later. (Tcl/Tk is not distributed with
-Mercurial.)
+The hgk extension allows browsing the history of a repository in a
+graphical way. It requires Tcl/Tk version 8.4 or later. (Tcl/Tk is not
+distributed with Mercurial.)
 
-hgk consists of two parts: a Tcl script that does the displaying and querying
-of information, and an extension to Mercurial named hgk.py, which provides
-hooks for hgk to get information. hgk can be found in the contrib directory,
-and the extension is shipped in the hgext repository, and needs to be enabled.
+hgk consists of two parts: a Tcl script that does the displaying and
+querying of information, and an extension to Mercurial named hgk.py,
+which provides hooks for hgk to get information. hgk can be found in
+the contrib directory, and the extension is shipped in the hgext
+repository, and needs to be enabled.
 
-The hg view command will launch the hgk Tcl script. For this command to work,
-hgk must be in your search path. Alternately, you can specify the path to hgk
-in your .hgrc file::
+The hg view command will launch the hgk Tcl script. For this command
+to work, hgk must be in your search path. Alternately, you can specify
+the path to hgk in your .hgrc file::
 
   [hgk]
   path=/location/of/hgk
 
-hgk can make use of the extdiff extension to visualize revisions. Assuming you
-had already configured extdiff vdiff command, just add::
+hgk can make use of the extdiff extension to visualize revisions.
+Assuming you had already configured extdiff vdiff command, just add::
 
   [hgk]
   vdiff=vdiff
 
-Revisions context menu will now display additional entries to fire vdiff on
-hovered and selected revisions.
+Revisions context menu will now display additional entries to fire
+vdiff on hovered and selected revisions.
 '''
 
 import os
 from mercurial import commands, util, patch, revlog, cmdutil
 from mercurial.node import nullid, nullrev, short
 from mercurial.i18n import _
 
 def difftree(ui, repo, node1=None, node2=None, *files, **opts):
     """diff trees from two commits"""
     def __difftree(repo, node1, node2, files=[]):
         assert node2 is not None
         mmap = repo[node1].manifest()
         mmap2 = repo[node2].manifest()
         m = cmdutil.match(repo, files)
         modified, added, removed  = repo.status(node1, node2, m)[:3]
         empty = short(nullid)
 
         for f in modified:
             # TODO get file permissions
             ui.write(":100664 100664 %s %s M\t%s\t%s\n" %
                      (short(mmap[f]), short(mmap2[f]), f, f))
         for f in added:
             ui.write(":000000 100664 %s %s N\t%s\t%s\n" %
                      (empty, short(mmap2[f]), f, f))
         for f in removed:
             ui.write(":100664 000000 %s %s D\t%s\t%s\n" %
                      (short(mmap[f]), empty, f, f))
     ##
 
     while True:
         if opts['stdin']:
             try:
                 line = raw_input().split(' ')
                 node1 = line[0]
                 if len(line) > 1:
                     node2 = line[1]
                 else:
                     node2 = None
             except EOFError:
                 break
         node1 = repo.lookup(node1)
         if node2:
             node2 = repo.lookup(node2)
         else:
             node2 = node1
             node1 = repo.changelog.parents(node1)[0]
         if opts['patch']:
             if opts['pretty']:
                 catcommit(ui, repo, node2, "")
             m = cmdutil.match(repo, files)
             chunks = patch.diff(repo, node1, node2, match=m,
                                 opts=patch.diffopts(ui, {'git': True}))
             for chunk in chunks:
                 ui.write(chunk)
         else:
             __difftree(repo, node1, node2, files=files)
         if not opts['stdin']:
             break
 
 def catcommit(ui, repo, n, prefix, ctx=None):
     nlprefix = '\n' + prefix;
     if ctx is None:
         ctx = repo[n]
     ui.write("tree %s\n" % short(ctx.changeset()[0])) # use ctx.node() instead ??
     for p in ctx.parents():
         ui.write("parent %s\n" % p)
 
     date = ctx.date()
     description = ctx.description().replace("\0", "")
     lines = description.splitlines()
     if lines and lines[-1].startswith('committer:'):
         committer = lines[-1].split(': ')[1].rstrip()
     else:
         committer = ctx.user()
 
     ui.write("author %s %s %s\n" % (ctx.user(), int(date[0]), date[1]))
     ui.write("committer %s %s %s\n" % (committer, int(date[0]), date[1]))
     ui.write("revision %d\n" % ctx.rev())
     ui.write("branch %s\n\n" % ctx.branch())
 
     if prefix != "":
         ui.write("%s%s\n" % (prefix, description.replace('\n', nlprefix).strip()))
     else:
         ui.write(description + "\n")
     if prefix:
         ui.write('\0')
 
 def base(ui, repo, node1, node2):
     """output common ancestor information"""
     node1 = repo.lookup(node1)
     node2 = repo.lookup(node2)
     n = repo.changelog.ancestor(node1, node2)
     ui.write(short(n) + "\n")
 
 def catfile(ui, repo, type=None, r=None, **opts):
     """cat a specific revision"""
     # in stdin mode, every line except the commit is prefixed with two
     # spaces.  This way the our caller can find the commit without magic
     # strings
     #
     prefix = ""
     if opts['stdin']:
         try:
             (type, r) = raw_input().split(' ');
             prefix = "    "
         except EOFError:
             return
 
     else:
         if not type or not r:
             ui.warn(_("cat-file: type or revision not supplied\n"))
             commands.help_(ui, 'cat-file')
 
     while r:
         if type != "commit":
             ui.warn(_("aborting hg cat-file only understands commits\n"))
             return 1;
         n = repo.lookup(r)
         catcommit(ui, repo, n, prefix)
         if opts['stdin']:
             try:
                 (type, r) = raw_input().split(' ');
             except EOFError:
                 break
         else:
             break
 
 # git rev-tree is a confusing thing.  You can supply a number of
 # commit sha1s on the command line, and it walks the commit history
 # telling you which commits are reachable from the supplied ones via
 # a bitmask based on arg position.
 # you can specify a commit to stop at by starting the sha1 with ^
 def revtree(ui, args, repo, full="tree", maxnr=0, parents=False):
     def chlogwalk():
         count = len(repo)
         i = count
         l = [0] * 100
         chunk = 100
         while True:
             if chunk > i:
                 chunk = i
                 i = 0
             else:
                 i -= chunk
 
             for x in xrange(chunk):
                 if i + x >= count:
                     l[chunk - x:] = [0] * (chunk - x)
                     break
                 if full != None:
                     l[x] = repo[i + x]
                     l[x].changeset() # force reading
                 else:
                     l[x] = 1
             for x in xrange(chunk-1, -1, -1):
                 if l[x] != 0:
                     yield (i + x, full != None and l[x] or None)
             if i == 0:
                 break
 
     # calculate and return the reachability bitmask for sha
     def is_reachable(ar, reachable, sha):
         if len(ar) == 0:
             return 1
         mask = 0
         for i in xrange(len(ar)):
             if sha in reachable[i]:
                 mask |= 1 << i
 
         return mask
 
     reachable = []
     stop_sha1 = []
     want_sha1 = []
     count = 0
 
     # figure out which commits they are asking for and which ones they
     # want us to stop on
     for i, arg in enumerate(args):
         if arg.startswith('^'):
             s = repo.lookup(arg[1:])
             stop_sha1.append(s)
             want_sha1.append(s)
         elif arg != 'HEAD':
             want_sha1.append(repo.lookup(arg))
 
     # calculate the graph for the supplied commits
     for i, n in enumerate(want_sha1):
         reachable.append(set());
         visit = [n];
         reachable[i].add(n)
         while visit:
             n = visit.pop(0)
             if n in stop_sha1:
                 continue
             for p in repo.changelog.parents(n):
                 if p not in reachable[i]:
                     reachable[i].add(p)
                     visit.append(p)
                 if p in stop_sha1:
                     continue
 
     # walk the repository looking for commits that are in our
     # reachability graph
     for i, ctx in chlogwalk():
         n = repo.changelog.node(i)
         mask = is_reachable(want_sha1, reachable, n)
         if mask:
             parentstr = ""
             if parents:
                 pp = repo.changelog.parents(n)
                 if pp[0] != nullid:
                     parentstr += " " + short(pp[0])
                 if pp[1] != nullid:
                     parentstr += " " + short(pp[1])
             if not full:
                 ui.write("%s%s\n" % (short(n), parentstr))
             elif full == "commit":
                 ui.write("%s%s\n" % (short(n), parentstr))
                 catcommit(ui, repo, n, '    ', ctx)
             else:
                 (p1, p2) = repo.changelog.parents(n)
                 (h, h1, h2) = map(short, (n, p1, p2))
                 (i1, i2) = map(repo.changelog.rev, (p1, p2))
 
                 date = ctx.date()[0]
                 ui.write("%s %s:%s" % (date, h, mask))
                 mask = is_reachable(want_sha1, reachable, p1)
                 if i1 != nullrev and mask > 0:
                     ui.write("%s:%s " % (h1, mask)),
                 mask = is_reachable(want_sha1, reachable, p2)
                 if i2 != nullrev and mask > 0:
                     ui.write("%s:%s " % (h2, mask))
                 ui.write("\n")
             if maxnr and count >= maxnr:
                 break
             count += 1
 
 def revparse(ui, repo, *revs, **opts):
     """parse given revisions"""
     def revstr(rev):
         if rev == 'HEAD':
             rev = 'tip'
         return revlog.hex(repo.lookup(rev))
 
     for r in revs:
         revrange = r.split(':', 1)
         ui.write('%s\n' % revstr(revrange[0]))
         if len(revrange) == 2:
             ui.write('^%s\n' % revstr(revrange[1]))
 
 # git rev-list tries to order things by date, and has the ability to stop
 # at a given commit without walking the whole repo.  TODO add the stop
 # parameter
 def revlist(ui, repo, *revs, **opts):
     """print revisions"""
     if opts['header']:
         full = "commit"
     else:
         full = None
     copy = [x for x in revs]
     revtree(ui, copy, repo, full, opts['max_count'], opts['parents'])
 
 def config(ui, repo, **opts):
     """print extension options"""
     def writeopt(name, value):
         ui.write('k=%s\nv=%s\n' % (name, value))
 
     writeopt('vdiff', ui.config('hgk', 'vdiff', ''))
 
 
 def view(ui, repo, *etc, **opts):
     "start interactive history viewer"
     os.chdir(repo.root)
     optstr = ' '.join(['--%s %s' % (k, v) for k, v in opts.iteritems() if v])
     cmd = ui.config("hgk", "path", "hgk") + " %s %s" % (optstr, " ".join(etc))
     ui.debug(_("running %s\n") % cmd)
     util.system(cmd)
 
 cmdtable = {
     "^view":
         (view,
          [('l', 'limit', '', _('limit number of changes displayed'))],
          _('hg view [-l LIMIT] [REVRANGE]')),
     "debug-diff-tree":
         (difftree,
          [('p', 'patch', None, _('generate patch')),
           ('r', 'recursive', None, _('recursive')),
           ('P', 'pretty', None, _('pretty')),
           ('s', 'stdin', None, _('stdin')),
           ('C', 'copy', None, _('detect copies')),
           ('S', 'search', "", _('search'))],
          _('hg git-diff-tree [OPTION]... NODE1 NODE2 [FILE]...')),
     "debug-cat-file":
         (catfile,
          [('s', 'stdin', None, _('stdin'))],
          _('hg debug-cat-file [OPTION]... TYPE FILE')),
     "debug-config":
         (config, [], _('hg debug-config')),
     "debug-merge-base":
         (base, [], _('hg debug-merge-base REV REV')),
     "debug-rev-parse":
         (revparse,
          [('', 'default', '', _('ignored'))],
          _('hg debug-rev-parse REV')),
     "debug-rev-list":
         (revlist,
          [('H', 'header', None, _('header')),
           ('t', 'topo-order', None, _('topo-order')),
           ('p', 'parents', None, _('parents')),
           ('n', 'max-count', 0, _('max-count'))],
          _('hg debug-rev-list [OPTION]... REV...')),
 }