# 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 demandload import demandload
from i18n import gettext as _
from node import *
demandload(globals(), "base85 cmdutil mdiff util")
demandload(globals(), "cStringIO email.Parser errno os popen2 re shutil sha")
demandload(globals(), "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)
try:
shutil.copyfile(abssrc, absdst)
shutil.copymode(abssrc, absdst)
except shutil.Error, inst:
raise util.Abort(str(inst))
# public functions
def extract(ui, fileobj):
'''extract patch from data read from fileobj.
patch can be normal patch or contained in email message.
return tuple (filename, message, user, date). any item in returned
tuple can be None. if filename is None, fileobj did not contain
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:
hgpatch = False
msg = email.Parser.Parser().parse(fileobj)
message = msg['Subject']
user = msg['From']
# should try to parse msg['Date']
date = None
if message:
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:
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:]
if not line.startswith('# '):
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
return tmpname, message, user, date
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 = False
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 = 'filter'
gitpatches.append(gp)
gp = None
if not dopatch:
dopatch = True
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'):
if not dopatch:
dopatch = 'binary'
gp.binary = True
if gp:
gitpatches.append(gp)
if not gitpatches:
dopatch = True
return (dopatch, gitpatches)
def dogitpatch(patchname, gitpatches, cwd=None):
"""Preprocess git patch so that vanilla patch can handle it"""
def extractbin(fp):
line = fp.readline().rstrip()
while line and not line.startswith('literal '):
line = fp.readline().rstrip()
if not line:
return
size = int(line[8:])
dec = []
line = fp.readline().rstrip()
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 = fp.readline().rstrip()
text = zlib.decompress(''.join(dec))
if len(text) != size:
raise util.Abort(_('binary patch is %d bytes, not %d') %
(len(text), size))
return text
pf = file(patchname)
pfline = 1
fd, patchname = tempfile.mkstemp(prefix='hg-patch-')
tmpfp = os.fdopen(fd, 'w')
try:
for i in range(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 = extractbin(pf)
if not text:
raise util.Abort(_('binary patch extraction failed'))
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):
"""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"""
files = {}
fuzz = False
patcher = util.find_in_path('gpatch', os.environ.get('PATH', ''),
'patch')
args = []
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 files, fuzz
(dopatch, gitpatches) = readgitpatch(patchname)
files, fuzz = {}, False
if dopatch:
if dopatch in ('filter', 'binary'):
patchname = dogitpatch(patchname, gitpatches, cwd=cwd)
try:
if dopatch != 'binary':
files, fuzz = __patch(patchname)
finally:
if dopatch == 'filter':
os.unlink(patchname)
for gp in gitpatches:
files[gp.path] = (gp.op, gp)
return (files, fuzz)
def diffopts(ui, opts={}):
return mdiff.diffopts(
text=opts.get('text'),
git=(opts.get('git') or
ui.configbool('diff', 'git', None)),
nodates=(opts.get('nodates') or
ui.configbool('diff', 'nodates', None)),
showfunc=(opts.get('show_function') or
ui.configbool('diff', 'showfunc', None)),
ignorews=(opts.get('ignore_all_space') or
ui.configbool('diff', 'ignorews', None)),
ignorewsamount=(opts.get('ignore_space_change') or
ui.configbool('diff', 'ignorewsamount', None)),
ignoreblanklines=(opts.get('ignore_blank_lines') or
ui.configbool('diff', 'ignoreblanklines', None)))
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(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.append(gp.oldpath)
elif ctype == 'COPY':
copies.append((gp.oldpath, gp.path, gp.copymod))
elif ctype == 'DELETE':
removes.append(gp.path)
for src, dst, after in copies:
if not after:
copyfile(src, dst, repo.root)
repo.copy(src, dst, wlock=wlock)
if removes:
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)
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
# TODO: deltas
l = len(tn)
fp.write('index %s..%s\nGIT binary patch\nliteral %s\n' %
(gitindex(to), gitindex(tn), len(tn)))
tn = ''.join([fmtline(l) for l in chunk(zlib.compress(tn))])
fp.write(tn)
fp.write('\n')
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]
clcache = {}
def getchangelog(n):
if n not in clcache:
clcache[n] = repo.changelog.read(n)
return clcache[n]
mcache = {}
def getmanifest(n):
if n not in mcache:
mcache[n] = repo.manifest.read(n)
return mcache[n]
fcache = {}
def getfile(f):
if f not in fcache:
fcache[f] = repo.file(f)
return fcache[f]
# reading the data for node1 early allows it to play nicely
# with repo.status and the revlog cache.
change = getchangelog(node1)
mmap = getmanifest(change[0])
date1 = util.datestr(change[2])
if not changes:
changes = repo.status(node1, node2, files, match=match)[:5]
modified, added, removed, deleted, unknown = changes
if files:
def filterfiles(filters):
l = [x for x in filters if x in files]
for t in files:
if not t.endswith("/"):
t += "/"
l += [x for x in filters if x.startswith(t)]
return l
modified, added, removed = map(filterfiles, (modified, added, removed))
if not modified and not added and not removed:
return
def renamedbetween(f, n1, n2):
r1, r2 = map(repo.changelog.rev, (n1, n2))
src = None
while r2 > r1:
cl = getchangelog(n2)[0]
m = getmanifest(cl)
try:
src = getfile(f).renamed(m[f])
except KeyError:
return None
if src:
f = src[0]
n2 = repo.changelog.parents(n2)[0]
r2 = repo.changelog.rev(n2)
return src
if node2:
change = getchangelog(node2)
mmap2 = getmanifest(change[0])
_date2 = util.datestr(change[2])
def date2(f):
return _date2
def read(f):
return getfile(f).read(mmap2[f])
def renamed(f):
return renamedbetween(f, node1, node2)
else:
tz = util.makedate()[1]
_date2 = util.datestr()
def date2(f):
try:
return util.datestr((os.lstat(repo.wjoin(f)).st_mtime, tz))
except OSError, err:
if err.errno != errno.ENOENT: raise
return _date2
def read(f):
return repo.wread(f)
def renamed(f):
src = repo.dirstate.copied(f)
parent = repo.dirstate.parents()[0]
if src:
f = src[0]
of = renamedbetween(f, node1, parent)
if of:
return of
elif src:
cl = getchangelog(parent)[0]
return (src, getmanifest(cl)[src])
else:
return None
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][0] for x in copied.items()]
all = modified + added + removed
all.sort()
for f in all:
to = None
tn = None
dodiff = True
header = []
if f in mmap:
to = getfile(f).read(mmap[f])
if f not in removed:
tn = read(f)
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:
if node2:
mode = gitmode(mmap2.execf(f))
else:
mode = gitmode(util.is_exec(repo.wjoin(f), None))
if f in copied:
a, arev = copied[f]
omode = gitmode(mmap.execf(a))
addmodehdr(header, omode, mode)
op = a in removed and 'rename' or 'copy'
header.append('%s from %s\n' % (op, a))
header.append('%s to %s\n' % (op, f))
to = getfile(a).read(arev)
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(mmap.execf(f))
header.append('deleted file mode %s\n' % mode)
else:
omode = gitmode(mmap.execf(f))
if node2:
nmode = gitmode(mmap2.execf(f))
else:
nmode = gitmode(util.is_exec(repo.wjoin(f), mmap.execf(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 == 'binary':
fp.write(''.join(header))
b85diff(fp, to, tn)
elif dodiff:
text = mdiff.unidiff(to, date1, tn, date2(f), 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(map(len, revs))
def single(node, seqno, fp):
parents = [p for p in repo.changelog.parents(node) if p != nullid]
if switch_parent:
parents.reverse()
prev = (parents and parents[0]) or nullid
change = repo.changelog.read(node)
if not fp:
fp = cmdutil.make_file(repo, template, node, total=total,
seqno=seqno, revwidth=revwidth)
if fp not in (sys.stdout, repo.ui):
repo.ui.note("%s\n" % fp.name)
fp.write("# HG changeset patch\n")
fp.write("# User %s\n" % change[1])
fp.write("# Date %d %d\n" % change[2])
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(change[4].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, cset in enumerate(revs):
single(cset, seqno, fp)
def diffstat(patchlines):
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