new file mode 100644
--- /dev/null
+++ b/hgext/record.py
@@ -0,0 +1,381 @@
+# record.py
+#
+# Copyright 2007 Bryan O'Sullivan <bos@serpentine.com>
+#
+# This software may be used and distributed according to the terms of
+# the GNU General Public License, incorporated herein by reference.
+
+'''interactive change selection during commit'''
+
+from mercurial.i18n import _
+from mercurial import cmdutil, commands, cmdutil, hg, mdiff, patch, revlog
+from mercurial import util
+import copy, cStringIO, errno, operator, os, re, shutil, tempfile
+
+lines_re = re.compile(r'@@ -(\d+),(\d+) \+(\d+),(\d+) @@\s*(.*)')
+
+def scanpatch(fp):
+ lr = patch.linereader(fp)
+
+ def scanwhile(first, p):
+ lines = [first]
+ while True:
+ line = lr.readline()
+ if not line:
+ break
+ if p(line):
+ lines.append(line)
+ else:
+ lr.push(line)
+ break
+ return lines
+
+ while True:
+ line = lr.readline()
+ if not line:
+ break
+ if line.startswith('diff --git a/'):
+ def notheader(line):
+ s = line.split(None, 1)
+ return not s or s[0] not in ('---', 'diff')
+ header = scanwhile(line, notheader)
+ fromfile = lr.readline()
+ if fromfile.startswith('---'):
+ tofile = lr.readline()
+ header += [fromfile, tofile]
+ else:
+ lr.push(fromfile)
+ yield 'file', header
+ elif line[0] == ' ':
+ yield 'context', scanwhile(line, lambda l: l[0] in ' \\')
+ elif line[0] in '-+':
+ yield 'hunk', scanwhile(line, lambda l: l[0] in '-+\\')
+ else:
+ m = lines_re.match(line)
+ if m:
+ yield 'range', m.groups()
+ else:
+ raise patch.PatchError('unknown patch content: %r' % line)
+
+class header(object):
+ diff_re = re.compile('diff --git a/(.*) b/(.*)$')
+ allhunks_re = re.compile('(?:index|new file|deleted file) ')
+ pretty_re = re.compile('(?:new file|deleted file) ')
+ special_re = re.compile('(?:index|new|deleted|copy|rename) ')
+
+ def __init__(self, header):
+ self.header = header
+ self.hunks = []
+
+ def binary(self):
+ for h in self.header:
+ if h.startswith('index '):
+ return True
+
+ def pretty(self, fp):
+ for h in self.header:
+ if h.startswith('index '):
+ fp.write(_('this modifies a binary file (all or nothing)\n'))
+ break
+ if self.pretty_re.match(h):
+ fp.write(h)
+ if self.binary():
+ fp.write(_('this is a binary file\n'))
+ break
+ if h.startswith('---'):
+ fp.write(_('%d hunks, %d lines changed\n') %
+ (len(self.hunks),
+ sum([h.added + h.removed for h in self.hunks])))
+ break
+ fp.write(h)
+
+ def write(self, fp):
+ fp.write(''.join(self.header))
+
+ def allhunks(self):
+ for h in self.header:
+ if self.allhunks_re.match(h):
+ return True
+
+ def files(self):
+ fromfile, tofile = self.diff_re.match(self.header[0]).groups()
+ if fromfile == tofile:
+ return [fromfile]
+ return [fromfile, tofile]
+
+ def filename(self):
+ return self.files()[-1]
+
+ def __repr__(self):
+ return '<header %s>' % (' '.join(map(repr, self.files())))
+
+ def special(self):
+ for h in self.header:
+ if self.special_re.match(h):
+ return True
+
+def countchanges(hunk):
+ add = len([h for h in hunk if h[0] == '+'])
+ rem = len([h for h in hunk if h[0] == '-'])
+ return add, rem
+
+class hunk(object):
+ maxcontext = 3
+
+ def __init__(self, header, fromline, toline, proc, before, hunk, after):
+ def trimcontext(number, lines):
+ delta = len(lines) - self.maxcontext
+ if False and delta > 0:
+ return number + delta, lines[:self.maxcontext]
+ return number, lines
+
+ self.header = header
+ self.fromline, self.before = trimcontext(fromline, before)
+ self.toline, self.after = trimcontext(toline, after)
+ self.proc = proc
+ self.hunk = hunk
+ self.added, self.removed = countchanges(self.hunk)
+
+ def write(self, fp):
+ delta = len(self.before) + len(self.after)
+ fromlen = delta + self.removed
+ tolen = delta + self.added
+ fp.write('@@ -%d,%d +%d,%d @@%s\n' %
+ (self.fromline, fromlen, self.toline, tolen,
+ self.proc and (' ' + self.proc)))
+ fp.write(''.join(self.before + self.hunk + self.after))
+
+ pretty = write
+
+ def filename(self):
+ return self.header.filename()
+
+ def __repr__(self):
+ return '<hunk %r@%d>' % (self.filename(), self.fromline)
+
+def parsepatch(fp):
+ class parser(object):
+ def __init__(self):
+ self.fromline = 0
+ self.toline = 0
+ self.proc = ''
+ self.header = None
+ self.context = []
+ self.before = []
+ self.hunk = []
+ self.stream = []
+
+ def addrange(self, (fromstart, fromend, tostart, toend, proc)):
+ self.fromline = int(fromstart)
+ self.toline = int(tostart)
+ self.proc = proc
+
+ def addcontext(self, context):
+ if self.hunk:
+ h = hunk(self.header, self.fromline, self.toline, self.proc,
+ self.before, self.hunk, context)
+ self.header.hunks.append(h)
+ self.stream.append(h)
+ self.fromline += len(self.before) + h.removed
+ self.toline += len(self.before) + h.added
+ self.before = []
+ self.hunk = []
+ self.proc = ''
+ self.context = context
+
+ def addhunk(self, hunk):
+ if self.context:
+ self.before = self.context
+ self.context = []
+ self.hunk = data
+
+ def newfile(self, hdr):
+ self.addcontext([])
+ h = header(hdr)
+ self.stream.append(h)
+ self.header = h
+
+ def finished(self):
+ self.addcontext([])
+ return self.stream
+
+ transitions = {
+ 'file': {'context': addcontext,
+ 'file': newfile,
+ 'hunk': addhunk,
+ 'range': addrange},
+ 'context': {'file': newfile,
+ 'hunk': addhunk,
+ 'range': addrange},
+ 'hunk': {'context': addcontext,
+ 'file': newfile,
+ 'range': addrange},
+ 'range': {'context': addcontext,
+ 'hunk': addhunk},
+ }
+
+ p = parser()
+
+ state = 'context'
+ for newstate, data in scanpatch(fp):
+ try:
+ p.transitions[state][newstate](p, data)
+ except KeyError:
+ raise patch.PatchError('unhandled transition: %s -> %s' %
+ (state, newstate))
+ state = newstate
+ return p.finished()
+
+def filterpatch(ui, chunks):
+ chunks = list(chunks)
+ chunks.reverse()
+ seen = {}
+ def consumefile():
+ consumed = []
+ while chunks:
+ if isinstance(chunks[-1], header):
+ break
+ else:
+ consumed.append(chunks.pop())
+ return consumed
+ resp = None
+ applied = {}
+ while chunks:
+ chunk = chunks.pop()
+ if isinstance(chunk, header):
+ fixoffset = 0
+ hdr = ''.join(chunk.header)
+ if hdr in seen:
+ consumefile()
+ continue
+ seen[hdr] = True
+ if not resp:
+ chunk.pretty(ui)
+ r = resp or ui.prompt(_('record changes to %s? [y]es [n]o') %
+ _(' and ').join(map(repr, chunk.files())),
+ '(?:|[yYnNqQaA])$') or 'y'
+ if r in 'aA':
+ r = 'y'
+ resp = 'y'
+ if r in 'qQ':
+ raise util.Abort(_('user quit'))
+ if r in 'yY':
+ applied[chunk.filename()] = [chunk]
+ if chunk.allhunks():
+ applied[chunk.filename()] += consumefile()
+ else:
+ consumefile()
+ else:
+ if not resp:
+ chunk.pretty(ui)
+ r = resp or ui.prompt(_('record this change to %r? [y]es [n]o') %
+ chunk.filename(), '(?:|[yYnNqQaA])$') or 'y'
+ if r in 'aA':
+ r = 'y'
+ resp = 'y'
+ if r in 'qQ':
+ raise util.Abort(_('user quit'))
+ if r in 'yY':
+ if fixoffset:
+ chunk = copy.copy(chunk)
+ chunk.toline += fixoffset
+ applied[chunk.filename()].append(chunk)
+ else:
+ fixoffset += chunk.removed - chunk.added
+ return reduce(operator.add, [h for h in applied.itervalues()
+ if h[0].special() or len(h) > 1], [])
+
+def record(ui, repo, *pats, **opts):
+ '''interactively select changes to commit'''
+
+ if not ui.interactive:
+ raise util.Abort(_('running non-interactively, use commit instead'))
+
+ def recordfunc(ui, repo, files, message, match, opts):
+ if files:
+ changes = None
+ else:
+ changes = repo.status(files=files, match=match)[:5]
+ modified, added, removed = changes[:3]
+ files = modified + added + removed
+ diffopts = mdiff.diffopts(git=True, nodates=True)
+ fp = cStringIO.StringIO()
+ patch.diff(repo, repo.dirstate.parents()[0], files=files,
+ match=match, changes=changes, opts=diffopts, fp=fp)
+ fp.seek(0)
+
+ chunks = filterpatch(ui, parsepatch(fp))
+ del fp
+
+ contenders = {}
+ for h in chunks:
+ try: contenders.update(dict.fromkeys(h.files()))
+ except AttributeError: pass
+
+ newfiles = [f for f in files if f in contenders]
+
+ if not newfiles:
+ ui.status(_('no changes to record\n'))
+ return 0
+
+ if changes is None:
+ changes = repo.status(files=newfiles, match=match)[:5]
+ modified = dict.fromkeys(changes[0])
+
+ backups = {}
+ backupdir = repo.join('record-backups')
+ try:
+ os.mkdir(backupdir)
+ except OSError, err:
+ if err.errno == errno.EEXIST:
+ pass
+ try:
+ for f in newfiles:
+ if f not in modified:
+ continue
+ fd, tmpname = tempfile.mkstemp(prefix=f.replace('/', '_')+'.',
+ dir=backupdir)
+ os.close(fd)
+ ui.debug('backup %r as %r\n' % (f, tmpname))
+ util.copyfile(repo.wjoin(f), tmpname)
+ backups[f] = tmpname
+
+ fp = cStringIO.StringIO()
+ for c in chunks:
+ if c.filename() in backups:
+ c.write(fp)
+ dopatch = fp.tell()
+ fp.seek(0)
+
+ if backups:
+ hg.revert(repo, repo.dirstate.parents()[0], backups.has_key)
+
+ if dopatch:
+ ui.debug('applying patch\n')
+ ui.debug(fp.getvalue())
+ patch.internalpatch(fp, ui, 1, repo.root)
+ del fp
+
+ repo.commit(newfiles, message, opts['user'], opts['date'], match,
+ force_editor=opts.get('force_editor'))
+ return 0
+ finally:
+ try:
+ for realname, tmpname in backups.iteritems():
+ ui.debug('restoring %r to %r\n' % (tmpname, realname))
+ util.copyfile(tmpname, realname)
+ os.unlink(tmpname)
+ os.rmdir(backupdir)
+ except OSError:
+ pass
+ return cmdutil.commit(ui, repo, recordfunc, pats, opts)
+
+cmdtable = {
+ 'record':
+ (record, [('A', 'addremove', None,
+ _('mark new/missing files as added/removed before committing')),
+ ('d', 'date', '', _('record datecode as commit date')),
+ ('u', 'user', '', _('record user as commiter')),
+ ] + commands.walkopts + commands.commitopts,
+ _('hg record [FILE]...')),
+ }