# patch.py - patch file parsing routines
#
# Copyright 2006 Brendan Cully <brendan@kublai.com>
#
# This software may be used and distributed according to the terms
# of the GNU General Public License, incorporated herein by reference.
from i18n import _
from node import *
import base85, cmdutil, mdiff, util, context, revlog
import cStringIO, email.Parser, os, popen2, re, sha
import sys, tempfile, zlib
# helper functions
def copyfile(src, dst, basedir=None):
if not basedir:
basedir = os.getcwd()
abssrc, absdst = [os.path.join(basedir, n) for n in (src, dst)]
if os.path.exists(absdst):
raise util.Abort(_("cannot create %s: destination already exists") %
dst)
targetdir = os.path.dirname(absdst)
if not os.path.isdir(targetdir):
os.makedirs(targetdir)
util.copyfile(abssrc, absdst)
# public functions
def extract(ui, fileobj):
'''extract patch from data read from fileobj.
patch can be a normal patch or contained in an email message.
return tuple (filename, message, user, date, node, p1, p2).
Any item in the returned tuple can be None. If filename is None,
fileobj did not contain a patch. Caller must unlink filename when done.'''
# attempt to detect the start of a patch
# (this heuristic is borrowed from quilt)
diffre = re.compile(r'^(?:Index:[ \t]|diff[ \t]|RCS file: |' +
'retrieving revision [0-9]+(\.[0-9]+)*$|' +
'(---|\*\*\*)[ \t])', re.MULTILINE)
fd, tmpname = tempfile.mkstemp(prefix='hg-patch-')
tmpfp = os.fdopen(fd, 'w')
try:
msg = email.Parser.Parser().parse(fileobj)
message = msg['Subject']
user = msg['From']
# should try to parse msg['Date']
date = None
nodeid = None
branch = None
parents = []
if message:
if message.startswith('[PATCH'):
pend = message.find(']')
if pend >= 0:
message = message[pend+1:].lstrip()
message = message.replace('\n\t', ' ')
ui.debug('Subject: %s\n' % message)
if user:
ui.debug('From: %s\n' % user)
diffs_seen = 0
ok_types = ('text/plain', 'text/x-diff', 'text/x-patch')
for part in msg.walk():
content_type = part.get_content_type()
ui.debug('Content-Type: %s\n' % content_type)
if content_type not in ok_types:
continue
payload = part.get_payload(decode=True)
m = diffre.search(payload)
if m:
hgpatch = False
ignoretext = False
ui.debug(_('found patch at byte %d\n') % m.start(0))
diffs_seen += 1
cfp = cStringIO.StringIO()
if message:
cfp.write(message)
cfp.write('\n')
for line in payload[:m.start(0)].splitlines():
if line.startswith('# HG changeset patch'):
ui.debug(_('patch generated by hg export\n'))
hgpatch = True
# drop earlier commit message content
cfp.seek(0)
cfp.truncate()
elif hgpatch:
if line.startswith('# User '):
user = line[7:]
ui.debug('From: %s\n' % user)
elif line.startswith("# Date "):
date = line[7:]
elif line.startswith("# Branch "):
branch = line[9:]
elif line.startswith("# Node ID "):
nodeid = line[10:]
elif line.startswith("# Parent "):
parents.append(line[10:])
elif line == '---' and 'git-send-email' in msg['X-Mailer']:
ignoretext = True
if not line.startswith('# ') and not ignoretext:
cfp.write(line)
cfp.write('\n')
message = cfp.getvalue()
if tmpfp:
tmpfp.write(payload)
if not payload.endswith('\n'):
tmpfp.write('\n')
elif not diffs_seen and message and content_type == 'text/plain':
message += '\n' + payload
except:
tmpfp.close()
os.unlink(tmpname)
raise
tmpfp.close()
if not diffs_seen:
os.unlink(tmpname)
return None, message, user, date, branch, None, None, None
p1 = parents and parents.pop(0) or None
p2 = parents and parents.pop(0) or None
return tmpname, message, user, date, branch, nodeid, p1, p2
GP_PATCH = 1 << 0 # we have to run patch
GP_FILTER = 1 << 1 # there's some copy/rename operation
GP_BINARY = 1 << 2 # there's a binary patch
def readgitpatch(patchname):
"""extract git-style metadata about patches from <patchname>"""
class gitpatch:
"op is one of ADD, DELETE, RENAME, MODIFY or COPY"
def __init__(self, path):
self.path = path
self.oldpath = None
self.mode = None
self.op = 'MODIFY'
self.copymod = False
self.lineno = 0
self.binary = False
# Filter patch for git information
gitre = re.compile('diff --git a/(.*) b/(.*)')
pf = file(patchname)
gp = None
gitpatches = []
# Can have a git patch with only metadata, causing patch to complain
dopatch = 0
lineno = 0
for line in pf:
lineno += 1
if line.startswith('diff --git'):
m = gitre.match(line)
if m:
if gp:
gitpatches.append(gp)
src, dst = m.group(1, 2)
gp = gitpatch(dst)
gp.lineno = lineno
elif gp:
if line.startswith('--- '):
if gp.op in ('COPY', 'RENAME'):
gp.copymod = True
dopatch |= GP_FILTER
gitpatches.append(gp)
gp = None
dopatch |= GP_PATCH
continue
if line.startswith('rename from '):
gp.op = 'RENAME'
gp.oldpath = line[12:].rstrip()
elif line.startswith('rename to '):
gp.path = line[10:].rstrip()
elif line.startswith('copy from '):
gp.op = 'COPY'
gp.oldpath = line[10:].rstrip()
elif line.startswith('copy to '):
gp.path = line[8:].rstrip()
elif line.startswith('deleted file'):
gp.op = 'DELETE'
elif line.startswith('new file mode '):
gp.op = 'ADD'
gp.mode = int(line.rstrip()[-3:], 8)
elif line.startswith('new mode '):
gp.mode = int(line.rstrip()[-3:], 8)
elif line.startswith('GIT binary patch'):
dopatch |= GP_BINARY
gp.binary = True
if gp:
gitpatches.append(gp)
if not gitpatches:
dopatch = GP_PATCH
return (dopatch, gitpatches)
def dogitpatch(patchname, gitpatches, cwd=None):
"""Preprocess git patch so that vanilla patch can handle it"""
def extractbin(fp):
i = [0] # yuck
def readline():
i[0] += 1
return fp.readline().rstrip()
line = readline()
while line and not line.startswith('literal '):
line = readline()
if not line:
return None, i[0]
size = int(line[8:])
dec = []
line = readline()
while line:
l = line[0]
if l <= 'Z' and l >= 'A':
l = ord(l) - ord('A') + 1
else:
l = ord(l) - ord('a') + 27
dec.append(base85.b85decode(line[1:])[:l])
line = readline()
text = zlib.decompress(''.join(dec))
if len(text) != size:
raise util.Abort(_('binary patch is %d bytes, not %d') %
(len(text), size))
return text, i[0]
pf = file(patchname)
pfline = 1
fd, patchname = tempfile.mkstemp(prefix='hg-patch-')
tmpfp = os.fdopen(fd, 'w')
try:
for i in xrange(len(gitpatches)):
p = gitpatches[i]
if not p.copymod and not p.binary:
continue
# rewrite patch hunk
while pfline < p.lineno:
tmpfp.write(pf.readline())
pfline += 1
if p.binary:
text, delta = extractbin(pf)
if not text:
raise util.Abort(_('binary patch extraction failed'))
pfline += delta
if not cwd:
cwd = os.getcwd()
absdst = os.path.join(cwd, p.path)
basedir = os.path.dirname(absdst)
if not os.path.isdir(basedir):
os.makedirs(basedir)
out = file(absdst, 'wb')
out.write(text)
out.close()
elif p.copymod:
copyfile(p.oldpath, p.path, basedir=cwd)
tmpfp.write('diff --git a/%s b/%s\n' % (p.path, p.path))
line = pf.readline()
pfline += 1
while not line.startswith('--- a/'):
tmpfp.write(line)
line = pf.readline()
pfline += 1
tmpfp.write('--- a/%s\n' % p.path)
line = pf.readline()
while line:
tmpfp.write(line)
line = pf.readline()
except:
tmpfp.close()
os.unlink(patchname)
raise
tmpfp.close()
return patchname
def patch(patchname, ui, strip=1, cwd=None, files={}):
"""apply the patch <patchname> to the working directory.
a list of patched files is returned"""
# helper function
def __patch(patchname):
"""patch and updates the files and fuzz variables"""
fuzz = False
args = []
patcher = ui.config('ui', 'patch')
if not patcher:
patcher = util.find_exe('gpatch') or util.find_exe('patch')
# Try to be smart only if patch call was not supplied
if util.needbinarypatch():
args.append('--binary')
if not patcher:
raise util.Abort(_('no patch command found in hgrc or PATH'))
if cwd:
args.append('-d %s' % util.shellquote(cwd))
fp = os.popen('%s %s -p%d < %s' % (patcher, ' '.join(args), strip,
util.shellquote(patchname)))
for line in fp:
line = line.rstrip()
ui.note(line + '\n')
if line.startswith('patching file '):
pf = util.parse_patch_output(line)
printed_file = False
files.setdefault(pf, (None, None))
elif line.find('with fuzz') >= 0:
fuzz = True
if not printed_file:
ui.warn(pf + '\n')
printed_file = True
ui.warn(line + '\n')
elif line.find('saving rejects to file') >= 0:
ui.warn(line + '\n')
elif line.find('FAILED') >= 0:
if not printed_file:
ui.warn(pf + '\n')
printed_file = True
ui.warn(line + '\n')
code = fp.close()
if code:
raise util.Abort(_("patch command failed: %s") %
util.explain_exit(code)[0])
return fuzz
(dopatch, gitpatches) = readgitpatch(patchname)
for gp in gitpatches:
files[gp.path] = (gp.op, gp)
fuzz = False
if dopatch:
filterpatch = dopatch & (GP_FILTER | GP_BINARY)
if filterpatch:
patchname = dogitpatch(patchname, gitpatches, cwd=cwd)
try:
if dopatch & GP_PATCH:
fuzz = __patch(patchname)
finally:
if filterpatch:
os.unlink(patchname)
return fuzz
def diffopts(ui, opts={}, untrusted=False):
def get(key, name=None):
return (opts.get(key) or
ui.configbool('diff', name or key, None, untrusted=untrusted))
return mdiff.diffopts(
text=opts.get('text'),
git=get('git'),
nodates=get('nodates'),
showfunc=get('show_function', 'showfunc'),
ignorews=get('ignore_all_space', 'ignorews'),
ignorewsamount=get('ignore_space_change', 'ignorewsamount'),
ignoreblanklines=get('ignore_blank_lines', 'ignoreblanklines'))
def updatedir(ui, repo, patches, wlock=None):
'''Update dirstate after patch application according to metadata'''
if not patches:
return
copies = []
removes = {}
cfiles = patches.keys()
cwd = repo.getcwd()
if cwd:
cfiles = [util.pathto(repo.root, cwd, f) for f in patches.keys()]
for f in patches:
ctype, gp = patches[f]
if ctype == 'RENAME':
copies.append((gp.oldpath, gp.path, gp.copymod))
removes[gp.oldpath] = 1
elif ctype == 'COPY':
copies.append((gp.oldpath, gp.path, gp.copymod))
elif ctype == 'DELETE':
removes[gp.path] = 1
for src, dst, after in copies:
if not after:
copyfile(src, dst, repo.root)
repo.copy(src, dst, wlock=wlock)
removes = removes.keys()
if removes:
removes.sort()
repo.remove(removes, True, wlock=wlock)
for f in patches:
ctype, gp = patches[f]
if gp and gp.mode:
x = gp.mode & 0100 != 0
dst = os.path.join(repo.root, gp.path)
# patch won't create empty files
if ctype == 'ADD' and not os.path.exists(dst):
repo.wwrite(gp.path, '', x and 'x' or '')
else:
util.set_exec(dst, x)
cmdutil.addremove(repo, cfiles, wlock=wlock)
files = patches.keys()
files.extend([r for r in removes if r not in files])
files.sort()
return files
def b85diff(fp, to, tn):
'''print base85-encoded binary diff'''
def gitindex(text):
if not text:
return '0' * 40
l = len(text)
s = sha.new('blob %d\0' % l)
s.update(text)
return s.hexdigest()
def fmtline(line):
l = len(line)
if l <= 26:
l = chr(ord('A') + l - 1)
else:
l = chr(l - 26 + ord('a') - 1)
return '%c%s\n' % (l, base85.b85encode(line, True))
def chunk(text, csize=52):
l = len(text)
i = 0
while i < l:
yield text[i:i+csize]
i += csize
tohash = gitindex(to)
tnhash = gitindex(tn)
if tohash == tnhash:
return ""
# TODO: deltas
ret = ['index %s..%s\nGIT binary patch\nliteral %s\n' %
(tohash, tnhash, len(tn))]
for l in chunk(zlib.compress(tn)):
ret.append(fmtline(l))
ret.append('\n')
return ''.join(ret)
def diff(repo, node1=None, node2=None, files=None, match=util.always,
fp=None, changes=None, opts=None):
'''print diff of changes to files between two nodes, or node and
working directory.
if node1 is None, use first dirstate parent instead.
if node2 is None, compare node1 with working directory.'''
if opts is None:
opts = mdiff.defaultopts
if fp is None:
fp = repo.ui
if not node1:
node1 = repo.dirstate.parents()[0]
ccache = {}
def getctx(r):
if r not in ccache:
ccache[r] = context.changectx(repo, r)
return ccache[r]
flcache = {}
def getfilectx(f, ctx):
flctx = ctx.filectx(f, filelog=flcache.get(f))
if f not in flcache:
flcache[f] = flctx._filelog
return flctx
# reading the data for node1 early allows it to play nicely
# with repo.status and the revlog cache.
ctx1 = context.changectx(repo, node1)
# force manifest reading
man1 = ctx1.manifest()
date1 = util.datestr(ctx1.date())
if not changes:
changes = repo.status(node1, node2, files, match=match)[:5]
modified, added, removed, deleted, unknown = changes
if not modified and not added and not removed:
return
if node2:
ctx2 = context.changectx(repo, node2)
execf2 = ctx2.manifest().execf
else:
ctx2 = context.workingctx(repo)
execf2 = util.execfunc(repo.root, None)
if execf2 is None:
execf2 = ctx2.parents()[0].manifest().copy().execf
# returns False if there was no rename between ctx1 and ctx2
# returns None if the file was created between ctx1 and ctx2
# returns the (file, node) present in ctx1 that was renamed to f in ctx2
def renamed(f):
startrev = ctx1.rev()
c = ctx2
crev = c.rev()
if crev is None:
crev = repo.changelog.count()
orig = f
while crev > startrev:
if f in c.files():
try:
src = getfilectx(f, c).renamed()
except revlog.LookupError:
return None
if src:
f = src[0]
crev = c.parents()[0].rev()
# try to reuse
c = getctx(crev)
if f not in man1:
return None
if f == orig:
return False
return f
if repo.ui.quiet:
r = None
else:
hexfunc = repo.ui.debugflag and hex or short
r = [hexfunc(node) for node in [node1, node2] if node]
if opts.git:
copied = {}
for f in added:
src = renamed(f)
if src:
copied[f] = src
srcs = [x[1] for x in copied.items()]
all = modified + added + removed
all.sort()
gone = {}
for f in all:
to = None
tn = None
dodiff = True
header = []
if f in man1:
to = getfilectx(f, ctx1).data()
if f not in removed:
tn = getfilectx(f, ctx2).data()
if opts.git:
def gitmode(x):
return x and '100755' or '100644'
def addmodehdr(header, omode, nmode):
if omode != nmode:
header.append('old mode %s\n' % omode)
header.append('new mode %s\n' % nmode)
a, b = f, f
if f in added:
mode = gitmode(execf2(f))
if f in copied:
a = copied[f]
omode = gitmode(man1.execf(a))
addmodehdr(header, omode, mode)
if a in removed and a not in gone:
op = 'rename'
gone[a] = 1
else:
op = 'copy'
header.append('%s from %s\n' % (op, a))
header.append('%s to %s\n' % (op, f))
to = getfilectx(a, ctx1).data()
else:
header.append('new file mode %s\n' % mode)
if util.binary(tn):
dodiff = 'binary'
elif f in removed:
if f in srcs:
dodiff = False
else:
mode = gitmode(man1.execf(f))
header.append('deleted file mode %s\n' % mode)
else:
omode = gitmode(man1.execf(f))
nmode = gitmode(execf2(f))
addmodehdr(header, omode, nmode)
if util.binary(to) or util.binary(tn):
dodiff = 'binary'
r = None
header.insert(0, 'diff --git a/%s b/%s\n' % (a, b))
if dodiff:
if dodiff == 'binary':
text = b85diff(fp, to, tn)
else:
text = mdiff.unidiff(to, date1,
# ctx2 date may be dynamic
tn, util.datestr(ctx2.date()),
f, r, opts=opts)
if text or len(header) > 1:
fp.write(''.join(header))
fp.write(text)
def export(repo, revs, template='hg-%h.patch', fp=None, switch_parent=False,
opts=None):
'''export changesets as hg patches.'''
total = len(revs)
revwidth = max([len(str(rev)) for rev in revs])
def single(rev, seqno, fp):
ctx = repo.changectx(rev)
node = ctx.node()
parents = [p.node() for p in ctx.parents() if p]
branch = ctx.branch()
if switch_parent:
parents.reverse()
prev = (parents and parents[0]) or nullid
if not fp:
fp = cmdutil.make_file(repo, template, node, total=total,
seqno=seqno, revwidth=revwidth)
if fp != sys.stdout and hasattr(fp, 'name'):
repo.ui.note("%s\n" % fp.name)
fp.write("# HG changeset patch\n")
fp.write("# User %s\n" % ctx.user())
fp.write("# Date %d %d\n" % ctx.date())
if branch and (branch != 'default'):
fp.write("# Branch %s\n" % branch)
fp.write("# Node ID %s\n" % hex(node))
fp.write("# Parent %s\n" % hex(prev))
if len(parents) > 1:
fp.write("# Parent %s\n" % hex(parents[1]))
fp.write(ctx.description().rstrip())
fp.write("\n\n")
diff(repo, prev, node, fp=fp, opts=opts)
if fp not in (sys.stdout, repo.ui):
fp.close()
for seqno, rev in enumerate(revs):
single(rev, seqno+1, fp)
def diffstat(patchlines):
if not util.find_exe('diffstat'):
return
fd, name = tempfile.mkstemp(prefix="hg-patchbomb-", suffix=".txt")
try:
p = popen2.Popen3('diffstat -p1 -w79 2>/dev/null > ' + name)
try:
for line in patchlines: print >> p.tochild, line
p.tochild.close()
if p.wait(): return
fp = os.fdopen(fd, 'r')
stat = []
for line in fp: stat.append(line.lstrip())
last = stat.pop()
stat.insert(0, last)
stat = ''.join(stat)
if stat.startswith('0 files'): raise ValueError
return stat
except: raise
finally:
try: os.unlink(name)
except: pass