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# hgweb/webutil.py - utility library for the web interface.
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#
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# Copyright 21 May 2005 - (c) 2005 Jake Edge <jake@edge2.net>
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# Copyright 2005-2007 Matt Mackall <mpm@selenic.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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import os, copy
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from mercurial import match, patch, scmutil, error, ui, util
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from mercurial.i18n import _
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from mercurial.node import hex, nullid
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from common import ErrorResponse
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from common import HTTP_NOT_FOUND
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import difflib
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def up(p):
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if p[0] != "/":
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p = "/" + p
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if p[-1] == "/":
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p = p[:-1]
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up = os.path.dirname(p)
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if up == "/":
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return "/"
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return up + "/"
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def revnavgen(pos, pagelen, limit, nodefunc):
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def seq(factor, limit=None):
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if limit:
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yield limit
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if limit >= 20 and limit <= 40:
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yield 50
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else:
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yield 1 * factor
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yield 3 * factor
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for f in seq(factor * 10):
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yield f
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navbefore = []
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navafter = []
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last = 0
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for f in seq(1, pagelen):
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if f < pagelen or f <= last:
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continue
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if f > limit:
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break
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last = f
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if pos + f < limit:
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navafter.append(("+%d" % f, hex(nodefunc(pos + f).node())))
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if pos - f >= 0:
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navbefore.insert(0, ("-%d" % f, hex(nodefunc(pos - f).node())))
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navafter.append(("tip", "tip"))
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try:
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navbefore.insert(0, ("(0)", hex(nodefunc('0').node())))
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except error.RepoError:
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pass
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def gen(l):
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def f(**map):
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for label, node in l:
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yield {"label": label, "node": node}
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return f
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return (dict(before=gen(navbefore), after=gen(navafter)),)
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def _siblings(siblings=[], hiderev=None):
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siblings = [s for s in siblings if s.node() != nullid]
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if len(siblings) == 1 and siblings[0].rev() == hiderev:
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return
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for s in siblings:
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d = {'node': s.hex(), 'rev': s.rev()}
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d['user'] = s.user()
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d['date'] = s.date()
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d['description'] = s.description()
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d['branch'] = s.branch()
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if util.safehasattr(s, 'path'):
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d['file'] = s.path()
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yield d
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def parents(ctx, hide=None):
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return _siblings(ctx.parents(), hide)
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def children(ctx, hide=None):
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return _siblings(ctx.children(), hide)
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def renamelink(fctx):
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r = fctx.renamed()
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if r:
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return [dict(file=r[0], node=hex(r[1]))]
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return []
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def nodetagsdict(repo, node):
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return [{"name": i} for i in repo.nodetags(node)]
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def nodebookmarksdict(repo, node):
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return [{"name": i} for i in repo.nodebookmarks(node)]
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def nodebranchdict(repo, ctx):
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branches = []
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branch = ctx.branch()
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# If this is an empty repo, ctx.node() == nullid,
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# ctx.branch() == 'default'.
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try:
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branchnode = repo.branchtip(branch)
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except error.RepoLookupError:
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branchnode = None
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if branchnode == ctx.node():
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branches.append({"name": branch})
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return branches
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def nodeinbranch(repo, ctx):
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branches = []
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branch = ctx.branch()
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try:
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branchnode = repo.branchtip(branch)
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except error.RepoLookupError:
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branchnode = None
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if branch != 'default' and branchnode != ctx.node():
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branches.append({"name": branch})
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return branches
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def nodebranchnodefault(ctx):
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branches = []
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branch = ctx.branch()
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if branch != 'default':
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branches.append({"name": branch})
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return branches
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def showtag(repo, tmpl, t1, node=nullid, **args):
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for t in repo.nodetags(node):
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yield tmpl(t1, tag=t, **args)
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def showbookmark(repo, tmpl, t1, node=nullid, **args):
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for t in repo.nodebookmarks(node):
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yield tmpl(t1, bookmark=t, **args)
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def cleanpath(repo, path):
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path = path.lstrip('/')
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return scmutil.canonpath(repo.root, '', path)
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def changectx(repo, req):
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changeid = "tip"
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if 'node' in req.form:
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changeid = req.form['node'][0]
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elif 'manifest' in req.form:
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changeid = req.form['manifest'][0]
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try:
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ctx = repo[changeid]
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except error.RepoError:
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man = repo.manifest
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ctx = repo[man.linkrev(man.rev(man.lookup(changeid)))]
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return ctx
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def filectx(repo, req):
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if 'file' not in req.form:
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raise ErrorResponse(HTTP_NOT_FOUND, 'file not given')
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path = cleanpath(repo, req.form['file'][0])
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if 'node' in req.form:
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changeid = req.form['node'][0]
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elif 'filenode' in req.form:
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changeid = req.form['filenode'][0]
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else:
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raise ErrorResponse(HTTP_NOT_FOUND, 'node or filenode not given')
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try:
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fctx = repo[changeid][path]
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except error.RepoError:
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fctx = repo.filectx(path, fileid=changeid)
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return fctx
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def listfilediffs(tmpl, files, node, max):
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for f in files[:max]:
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yield tmpl('filedifflink', node=hex(node), file=f)
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if len(files) > max:
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yield tmpl('fileellipses')
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def diffs(repo, tmpl, ctx, files, parity, style):
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def countgen():
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start = 1
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while True:
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yield start
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start += 1
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blockcount = countgen()
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def prettyprintlines(diff, blockno):
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for lineno, l in enumerate(diff.splitlines(True)):
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lineno = "%d.%d" % (blockno, lineno + 1)
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if l.startswith('+'):
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ltype = "difflineplus"
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elif l.startswith('-'):
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ltype = "difflineminus"
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elif l.startswith('@'):
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ltype = "difflineat"
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else:
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ltype = "diffline"
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yield tmpl(ltype,
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line=l,
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lineid="l%s" % lineno,
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linenumber="% 8s" % lineno)
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if files:
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m = match.exact(repo.root, repo.getcwd(), files)
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else:
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m = match.always(repo.root, repo.getcwd())
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diffopts = patch.diffopts(repo.ui, untrusted=True)
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parents = ctx.parents()
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node1 = parents and parents[0].node() or nullid
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node2 = ctx.node()
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block = []
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for chunk in patch.diff(repo, node1, node2, m, opts=diffopts):
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if chunk.startswith('diff') and block:
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blockno = blockcount.next()
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yield tmpl('diffblock', parity=parity.next(), blockno=blockno,
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lines=prettyprintlines(''.join(block), blockno))
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block = []
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if chunk.startswith('diff') and style != 'raw':
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chunk = ''.join(chunk.splitlines(True)[1:])
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block.append(chunk)
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blockno = blockcount.next()
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yield tmpl('diffblock', parity=parity.next(), blockno=blockno,
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lines=prettyprintlines(''.join(block), blockno))
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def compare(tmpl, context, leftlines, rightlines):
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'''Generator function that provides side-by-side comparison data.'''
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def compline(type, leftlineno, leftline, rightlineno, rightline):
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lineid = leftlineno and ("l%s" % leftlineno) or ''
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lineid += rightlineno and ("r%s" % rightlineno) or ''
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return tmpl('comparisonline',
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type=type,
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lineid=lineid,
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leftlinenumber="% 6s" % (leftlineno or ''),
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leftline=leftline or '',
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rightlinenumber="% 6s" % (rightlineno or ''),
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rightline=rightline or '')
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def getblock(opcodes):
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for type, llo, lhi, rlo, rhi in opcodes:
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len1 = lhi - llo
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len2 = rhi - rlo
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count = min(len1, len2)
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for i in xrange(count):
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yield compline(type=type,
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leftlineno=llo + i + 1,
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leftline=leftlines[llo + i],
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rightlineno=rlo + i + 1,
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rightline=rightlines[rlo + i])
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if len1 > len2:
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for i in xrange(llo + count, lhi):
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yield compline(type=type,
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leftlineno=i + 1,
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leftline=leftlines[i],
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rightlineno=None,
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rightline=None)
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elif len2 > len1:
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for i in xrange(rlo + count, rhi):
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yield compline(type=type,
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leftlineno=None,
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leftline=None,
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rightlineno=i + 1,
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rightline=rightlines[i])
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s = difflib.SequenceMatcher(None, leftlines, rightlines)
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if context < 0:
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yield tmpl('comparisonblock', lines=getblock(s.get_opcodes()))
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else:
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for oc in s.get_grouped_opcodes(n=context):
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yield tmpl('comparisonblock', lines=getblock(oc))
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def diffstatgen(ctx):
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'''Generator function that provides the diffstat data.'''
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stats = patch.diffstatdata(util.iterlines(ctx.diff()))
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maxname, maxtotal, addtotal, removetotal, binary = patch.diffstatsum(stats)
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while True:
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yield stats, maxname, maxtotal, addtotal, removetotal, binary
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def diffsummary(statgen):
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'''Return a short summary of the diff.'''
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stats, maxname, maxtotal, addtotal, removetotal, binary = statgen.next()
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return _(' %d files changed, %d insertions(+), %d deletions(-)\n') % (
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len(stats), addtotal, removetotal)
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def diffstat(tmpl, ctx, statgen, parity):
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'''Return a diffstat template for each file in the diff.'''
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stats, maxname, maxtotal, addtotal, removetotal, binary = statgen.next()
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files = ctx.files()
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def pct(i):
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if maxtotal == 0:
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return 0
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return (float(i) / maxtotal) * 100
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fileno = 0
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for filename, adds, removes, isbinary in stats:
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template = filename in files and 'diffstatlink' or 'diffstatnolink'
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total = adds + removes
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fileno += 1
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yield tmpl(template, node=ctx.hex(), file=filename, fileno=fileno,
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total=total, addpct=pct(adds), removepct=pct(removes),
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parity=parity.next())
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class sessionvars(object):
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def __init__(self, vars, start='?'):
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self.start = start
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self.vars = vars
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def __getitem__(self, key):
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return self.vars[key]
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def __setitem__(self, key, value):
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self.vars[key] = value
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def __copy__(self):
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return sessionvars(copy.copy(self.vars), self.start)
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def __iter__(self):
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separator = self.start
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for key, value in self.vars.iteritems():
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yield {'name': key, 'value': str(value), 'separator': separator}
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separator = '&'
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class wsgiui(ui.ui):
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# default termwidth breaks under mod_wsgi
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def termwidth(self):
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return 80
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