# patch.py - patch file parsing routines
#
# Copyright 2006 Brendan Cully <brendan@kublai.com>
# Copyright 2007 Chris Mason <chris.mason@oracle.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, diffhelpers
import cStringIO, email.Parser, os, popen2, re, sha, errno
import sys, tempfile, zlib
class PatchError(Exception):
pass
class NoHunks(PatchError):
pass
# 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)
subject = msg['Subject']
user = msg['From']
gitsendmail = 'git-send-email' in msg.get('X-Mailer', '')
# should try to parse msg['Date']
date = None
nodeid = None
branch = None
parents = []
if subject:
if subject.startswith('[PATCH'):
pend = subject.find(']')
if pend >= 0:
subject = subject[pend+1:].lstrip()
subject = subject.replace('\n\t', ' ')
ui.debug('Subject: %s\n' % subject)
if user:
ui.debug('From: %s\n' % user)
diffs_seen = 0
ok_types = ('text/plain', 'text/x-diff', 'text/x-patch')
message = ''
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()
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()
subject = None
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 gitsendmail:
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
if subject and not message.startswith(subject):
message = '%s\n%s' % (subject, message)
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(fp, firstline=None):
"""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.lineno = 0
self.binary = False
def reader(fp, firstline):
if firstline is not None:
yield firstline
for line in fp:
yield line
# Filter patch for git information
gitre = re.compile('diff --git a/(.*) b/(.*)')
gp = None
gitpatches = []
# Can have a git patch with only metadata, causing patch to complain
dopatch = 0
lineno = 0
for line in reader(fp, firstline):
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'):
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()[-6:], 8)
elif line.startswith('new mode '):
gp.mode = int(line.rstrip()[-6:], 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 patch(patchname, ui, strip=1, cwd=None, files={}):
"""apply <patchname> to the working directory.
returns whether patch was applied with fuzz factor."""
patcher = ui.config('ui', 'patch')
args = []
try:
if patcher:
return externalpatch(patcher, args, patchname, ui, strip, cwd,
files)
else:
try:
return internalpatch(patchname, ui, strip, cwd, files)
except NoHunks:
patcher = util.find_exe('gpatch') or util.find_exe('patch')
ui.debug('no valid hunks found; trying with %r instead\n' %
patcher)
if util.needbinarypatch():
args.append('--binary')
return externalpatch(patcher, args, patchname, ui, strip, cwd,
files)
except PatchError, err:
s = str(err)
if s:
raise util.Abort(s)
else:
raise util.Abort(_('patch failed to apply'))
def externalpatch(patcher, args, patchname, ui, strip, cwd, files):
"""use <patcher> to apply <patchname> to the working directory.
returns whether patch was applied with fuzz factor."""
fuzz = False
if cwd:
args.append('-d %s' % util.shellquote(cwd))
fp = util.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 PatchError(_("patch command failed: %s") %
util.explain_exit(code)[0])
return fuzz
def internalpatch(patchobj, ui, strip, cwd, files={}):
"""use builtin patch to apply <patchobj> to the working directory.
returns whether patch was applied with fuzz factor."""
try:
fp = file(patchobj, 'rb')
except TypeError:
fp = patchobj
if cwd:
curdir = os.getcwd()
os.chdir(cwd)
try:
ret = applydiff(ui, fp, files, strip=strip)
finally:
if cwd:
os.chdir(curdir)
if ret < 0:
raise PatchError
return ret > 0
# @@ -start,len +start,len @@ or @@ -start +start @@ if len is 1
unidesc = re.compile('@@ -(\d+)(,(\d+))? \+(\d+)(,(\d+))? @@')
contextdesc = re.compile('(---|\*\*\*) (\d+)(,(\d+))? (---|\*\*\*)')
class patchfile:
def __init__(self, ui, fname, missing=False):
self.fname = fname
self.ui = ui
self.lines = []
self.exists = False
self.missing = missing
if not missing:
try:
fp = file(fname, 'rb')
self.lines = fp.readlines()
self.exists = True
except IOError:
pass
else:
self.ui.warn(_("unable to find '%s' for patching\n") % self.fname)
if not self.exists:
dirname = os.path.dirname(fname)
if dirname and not os.path.isdir(dirname):
os.makedirs(dirname)
self.hash = {}
self.dirty = 0
self.offset = 0
self.rej = []
self.fileprinted = False
self.printfile(False)
self.hunks = 0
def printfile(self, warn):
if self.fileprinted:
return
if warn or self.ui.verbose:
self.fileprinted = True
s = _("patching file %s\n") % self.fname
if warn:
self.ui.warn(s)
else:
self.ui.note(s)
def findlines(self, l, linenum):
# looks through the hash and finds candidate lines. The
# result is a list of line numbers sorted based on distance
# from linenum
def sorter(a, b):
vala = abs(a - linenum)
valb = abs(b - linenum)
return cmp(vala, valb)
try:
cand = self.hash[l]
except:
return []
if len(cand) > 1:
# resort our list of potentials forward then back.
cand.sort(sorter)
return cand
def hashlines(self):
self.hash = {}
for x in xrange(len(self.lines)):
s = self.lines[x]
self.hash.setdefault(s, []).append(x)
def write_rej(self):
# our rejects are a little different from patch(1). This always
# creates rejects in the same form as the original patch. A file
# header is inserted so that you can run the reject through patch again
# without having to type the filename.
if not self.rej:
return
if self.hunks != 1:
hunkstr = "s"
else:
hunkstr = ""
fname = self.fname + ".rej"
self.ui.warn(
_("%d out of %d hunk%s FAILED -- saving rejects to file %s\n") %
(len(self.rej), self.hunks, hunkstr, fname))
try: os.unlink(fname)
except:
pass
fp = file(fname, 'wb')
base = os.path.basename(self.fname)
fp.write("--- %s\n+++ %s\n" % (base, base))
for x in self.rej:
for l in x.hunk:
fp.write(l)
if l[-1] != '\n':
fp.write("\n\ No newline at end of file\n")
def write(self, dest=None):
if self.dirty:
if not dest:
dest = self.fname
st = None
try:
st = os.lstat(dest)
except OSError, inst:
if inst.errno != errno.ENOENT:
raise
if st and st.st_nlink > 1:
os.unlink(dest)
fp = file(dest, 'wb')
if st and st.st_nlink > 1:
os.chmod(dest, st.st_mode)
fp.writelines(self.lines)
fp.close()
def close(self):
self.write()
self.write_rej()
def apply(self, h, reverse):
if not h.complete():
raise PatchError(_("bad hunk #%d %s (%d %d %d %d)") %
(h.number, h.desc, len(h.a), h.lena, len(h.b),
h.lenb))
self.hunks += 1
if reverse:
h.reverse()
if self.missing:
self.rej.append(h)
return -1
if self.exists and h.createfile():
self.ui.warn(_("file %s already exists\n") % self.fname)
self.rej.append(h)
return -1
if isinstance(h, binhunk):
if h.rmfile():
os.unlink(self.fname)
else:
self.lines[:] = h.new()
self.offset += len(h.new())
self.dirty = 1
return 0
# fast case first, no offsets, no fuzz
old = h.old()
# patch starts counting at 1 unless we are adding the file
if h.starta == 0:
start = 0
else:
start = h.starta + self.offset - 1
orig_start = start
if diffhelpers.testhunk(old, self.lines, start) == 0:
if h.rmfile():
os.unlink(self.fname)
else:
self.lines[start : start + h.lena] = h.new()
self.offset += h.lenb - h.lena
self.dirty = 1
return 0
# ok, we couldn't match the hunk. Lets look for offsets and fuzz it
self.hashlines()
if h.hunk[-1][0] != ' ':
# if the hunk tried to put something at the bottom of the file
# override the start line and use eof here
search_start = len(self.lines)
else:
search_start = orig_start
for fuzzlen in xrange(3):
for toponly in [ True, False ]:
old = h.old(fuzzlen, toponly)
cand = self.findlines(old[0][1:], search_start)
for l in cand:
if diffhelpers.testhunk(old, self.lines, l) == 0:
newlines = h.new(fuzzlen, toponly)
self.lines[l : l + len(old)] = newlines
self.offset += len(newlines) - len(old)
self.dirty = 1
if fuzzlen:
fuzzstr = "with fuzz %d " % fuzzlen
f = self.ui.warn
self.printfile(True)
else:
fuzzstr = ""
f = self.ui.note
offset = l - orig_start - fuzzlen
if offset == 1:
linestr = "line"
else:
linestr = "lines"
f(_("Hunk #%d succeeded at %d %s(offset %d %s).\n") %
(h.number, l+1, fuzzstr, offset, linestr))
return fuzzlen
self.printfile(True)
self.ui.warn(_("Hunk #%d FAILED at %d\n") % (h.number, orig_start))
self.rej.append(h)
return -1
class hunk:
def __init__(self, desc, num, lr, context, gitpatch=None):
self.number = num
self.desc = desc
self.hunk = [ desc ]
self.a = []
self.b = []
if context:
self.read_context_hunk(lr)
else:
self.read_unified_hunk(lr)
self.gitpatch = gitpatch
def read_unified_hunk(self, lr):
m = unidesc.match(self.desc)
if not m:
raise PatchError(_("bad hunk #%d") % self.number)
self.starta, foo, self.lena, self.startb, foo2, self.lenb = m.groups()
if self.lena == None:
self.lena = 1
else:
self.lena = int(self.lena)
if self.lenb == None:
self.lenb = 1
else:
self.lenb = int(self.lenb)
self.starta = int(self.starta)
self.startb = int(self.startb)
diffhelpers.addlines(lr.fp, self.hunk, self.lena, self.lenb, self.a, self.b)
# if we hit eof before finishing out the hunk, the last line will
# be zero length. Lets try to fix it up.
while len(self.hunk[-1]) == 0:
del self.hunk[-1]
del self.a[-1]
del self.b[-1]
self.lena -= 1
self.lenb -= 1
def read_context_hunk(self, lr):
self.desc = lr.readline()
m = contextdesc.match(self.desc)
if not m:
raise PatchError(_("bad hunk #%d") % self.number)
foo, self.starta, foo2, aend, foo3 = m.groups()
self.starta = int(self.starta)
if aend == None:
aend = self.starta
self.lena = int(aend) - self.starta
if self.starta:
self.lena += 1
for x in xrange(self.lena):
l = lr.readline()
if l.startswith('---'):
lr.push(l)
break
s = l[2:]
if l.startswith('- ') or l.startswith('! '):
u = '-' + s
elif l.startswith(' '):
u = ' ' + s
else:
raise PatchError(_("bad hunk #%d old text line %d") %
(self.number, x))
self.a.append(u)
self.hunk.append(u)
l = lr.readline()
if l.startswith('\ '):
s = self.a[-1][:-1]
self.a[-1] = s
self.hunk[-1] = s
l = lr.readline()
m = contextdesc.match(l)
if not m:
raise PatchError(_("bad hunk #%d") % self.number)
foo, self.startb, foo2, bend, foo3 = m.groups()
self.startb = int(self.startb)
if bend == None:
bend = self.startb
self.lenb = int(bend) - self.startb
if self.startb:
self.lenb += 1
hunki = 1
for x in xrange(self.lenb):
l = lr.readline()
if l.startswith('\ '):
s = self.b[-1][:-1]
self.b[-1] = s
self.hunk[hunki-1] = s
continue
if not l:
lr.push(l)
break
s = l[2:]
if l.startswith('+ ') or l.startswith('! '):
u = '+' + s
elif l.startswith(' '):
u = ' ' + s
elif len(self.b) == 0:
# this can happen when the hunk does not add any lines
lr.push(l)
break
else:
raise PatchError(_("bad hunk #%d old text line %d") %
(self.number, x))
self.b.append(s)
while True:
if hunki >= len(self.hunk):
h = ""
else:
h = self.hunk[hunki]
hunki += 1
if h == u:
break
elif h.startswith('-'):
continue
else:
self.hunk.insert(hunki-1, u)
break
if not self.a:
# this happens when lines were only added to the hunk
for x in self.hunk:
if x.startswith('-') or x.startswith(' '):
self.a.append(x)
if not self.b:
# this happens when lines were only deleted from the hunk
for x in self.hunk:
if x.startswith('+') or x.startswith(' '):
self.b.append(x[1:])
# @@ -start,len +start,len @@
self.desc = "@@ -%d,%d +%d,%d @@\n" % (self.starta, self.lena,
self.startb, self.lenb)
self.hunk[0] = self.desc
def reverse(self):
origlena = self.lena
origstarta = self.starta
self.lena = self.lenb
self.starta = self.startb
self.lenb = origlena
self.startb = origstarta
self.a = []
self.b = []
# self.hunk[0] is the @@ description
for x in xrange(1, len(self.hunk)):
o = self.hunk[x]
if o.startswith('-'):
n = '+' + o[1:]
self.b.append(o[1:])
elif o.startswith('+'):
n = '-' + o[1:]
self.a.append(n)
else:
n = o
self.b.append(o[1:])
self.a.append(o)
self.hunk[x] = o
def fix_newline(self):
diffhelpers.fix_newline(self.hunk, self.a, self.b)
def complete(self):
return len(self.a) == self.lena and len(self.b) == self.lenb
def createfile(self):
create = self.gitpatch is None or self.gitpatch.op == 'ADD'
return self.starta == 0 and self.lena == 0 and create
def rmfile(self):
remove = self.gitpatch is None or self.gitpatch.op == 'DELETE'
return self.startb == 0 and self.lenb == 0 and remove
def fuzzit(self, l, fuzz, toponly):
# this removes context lines from the top and bottom of list 'l'. It
# checks the hunk to make sure only context lines are removed, and then
# returns a new shortened list of lines.
fuzz = min(fuzz, len(l)-1)
if fuzz:
top = 0
bot = 0
hlen = len(self.hunk)
for x in xrange(hlen-1):
# the hunk starts with the @@ line, so use x+1
if self.hunk[x+1][0] == ' ':
top += 1
else:
break
if not toponly:
for x in xrange(hlen-1):
if self.hunk[hlen-bot-1][0] == ' ':
bot += 1
else:
break
# top and bot now count context in the hunk
# adjust them if either one is short
context = max(top, bot, 3)
if bot < context:
bot = max(0, fuzz - (context - bot))
else:
bot = min(fuzz, bot)
if top < context:
top = max(0, fuzz - (context - top))
else:
top = min(fuzz, top)
return l[top:len(l)-bot]
return l
def old(self, fuzz=0, toponly=False):
return self.fuzzit(self.a, fuzz, toponly)
def newctrl(self):
res = []
for x in self.hunk:
c = x[0]
if c == ' ' or c == '+':
res.append(x)
return res
def new(self, fuzz=0, toponly=False):
return self.fuzzit(self.b, fuzz, toponly)
class binhunk:
'A binary patch file. Only understands literals so far.'
def __init__(self, gitpatch):
self.gitpatch = gitpatch
self.text = None
self.hunk = ['GIT binary patch\n']
def createfile(self):
return self.gitpatch.op in ('ADD', 'RENAME', 'COPY')
def rmfile(self):
return self.gitpatch.op == 'DELETE'
def complete(self):
return self.text is not None
def new(self):
return [self.text]
def extract(self, fp):
line = fp.readline()
self.hunk.append(line)
while line and not line.startswith('literal '):
line = fp.readline()
self.hunk.append(line)
if not line:
raise PatchError(_('could not extract binary patch'))
size = int(line[8:].rstrip())
dec = []
line = fp.readline()
self.hunk.append(line)
while len(line) > 1:
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:-1])[:l])
line = fp.readline()
self.hunk.append(line)
text = zlib.decompress(''.join(dec))
if len(text) != size:
raise PatchError(_('binary patch is %d bytes, not %d') %
len(text), size)
self.text = text
def parsefilename(str):
# --- filename \t|space stuff
s = str[4:].rstrip('\r\n')
i = s.find('\t')
if i < 0:
i = s.find(' ')
if i < 0:
return s
return s[:i]
def selectfile(afile_orig, bfile_orig, hunk, strip, reverse):
def pathstrip(path, count=1):
pathlen = len(path)
i = 0
if count == 0:
return path.rstrip()
while count > 0:
i = path.find('/', i)
if i == -1:
raise PatchError(_("unable to strip away %d dirs from %s") %
(count, path))
i += 1
# consume '//' in the path
while i < pathlen - 1 and path[i] == '/':
i += 1
count -= 1
return path[i:].rstrip()
nulla = afile_orig == "/dev/null"
nullb = bfile_orig == "/dev/null"
afile = pathstrip(afile_orig, strip)
gooda = not nulla and os.path.exists(afile)
bfile = pathstrip(bfile_orig, strip)
if afile == bfile:
goodb = gooda
else:
goodb = not nullb and os.path.exists(bfile)
createfunc = hunk.createfile
if reverse:
createfunc = hunk.rmfile
missing = not goodb and not gooda and not createfunc()
fname = None
if not missing:
if gooda and goodb:
fname = (afile in bfile) and afile or bfile
elif gooda:
fname = afile
if not fname:
if not nullb:
fname = (afile in bfile) and afile or bfile
elif not nulla:
fname = afile
else:
raise PatchError(_("undefined source and destination files"))
return fname, missing
class linereader:
# simple class to allow pushing lines back into the input stream
def __init__(self, fp):
self.fp = fp
self.buf = []
def push(self, line):
self.buf.append(line)
def readline(self):
if self.buf:
l = self.buf[0]
del self.buf[0]
return l
return self.fp.readline()
def iterhunks(ui, fp, sourcefile=None):
"""Read a patch and yield the following events:
- ("file", afile, bfile, firsthunk): select a new target file.
- ("hunk", hunk): a new hunk is ready to be applied, follows a
"file" event.
- ("git", gitchanges): current diff is in git format, gitchanges
maps filenames to gitpatch records. Unique event.
"""
def scangitpatch(fp, firstline):
'''git patches can modify a file, then copy that file to
a new file, but expect the source to be the unmodified form.
So we scan the patch looking for that case so we can do
the copies ahead of time.'''
pos = 0
try:
pos = fp.tell()
except IOError:
fp = cStringIO.StringIO(fp.read())
(dopatch, gitpatches) = readgitpatch(fp, firstline)
fp.seek(pos)
return fp, dopatch, gitpatches
changed = {}
current_hunk = None
afile = ""
bfile = ""
state = None
hunknum = 0
emitfile = False
git = False
gitre = re.compile('diff --git (a/.*) (b/.*)')
# our states
BFILE = 1
context = None
lr = linereader(fp)
dopatch = True
gitworkdone = False
while True:
newfile = False
x = lr.readline()
if not x:
break
if current_hunk:
if x.startswith('\ '):
current_hunk.fix_newline()
yield 'hunk', current_hunk
current_hunk = None
gitworkdone = False
if ((sourcefile or state == BFILE) and ((not context and x[0] == '@') or
((context or context == None) and x.startswith('***************')))):
try:
if context == None and x.startswith('***************'):
context = True
gpatch = changed.get(bfile[2:], (None, None))[1]
current_hunk = hunk(x, hunknum + 1, lr, context, gpatch)
except PatchError, err:
ui.debug(err)
current_hunk = None
continue
hunknum += 1
if emitfile:
emitfile = False
yield 'file', (afile, bfile, current_hunk)
elif state == BFILE and x.startswith('GIT binary patch'):
current_hunk = binhunk(changed[bfile[2:]][1])
hunknum += 1
if emitfile:
emitfile = False
yield 'file', (afile, bfile, current_hunk)
current_hunk.extract(fp)
elif x.startswith('diff --git'):
# check for git diff, scanning the whole patch file if needed
m = gitre.match(x)
if m:
afile, bfile = m.group(1, 2)
if not git:
git = True
fp, dopatch, gitpatches = scangitpatch(fp, x)
yield 'git', gitpatches
for gp in gitpatches:
changed[gp.path] = (gp.op, gp)
# else error?
# copy/rename + modify should modify target, not source
if changed.get(bfile[2:], (None, None))[0] in ('COPY',
'RENAME'):
afile = bfile
gitworkdone = True
newfile = True
elif x.startswith('---'):
# check for a unified diff
l2 = lr.readline()
if not l2.startswith('+++'):
lr.push(l2)
continue
newfile = True
context = False
afile = parsefilename(x)
bfile = parsefilename(l2)
elif x.startswith('***'):
# check for a context diff
l2 = lr.readline()
if not l2.startswith('---'):
lr.push(l2)
continue
l3 = lr.readline()
lr.push(l3)
if not l3.startswith("***************"):
lr.push(l2)
continue
newfile = True
context = True
afile = parsefilename(x)
bfile = parsefilename(l2)
if newfile:
emitfile = True
state = BFILE
hunknum = 0
if current_hunk:
if current_hunk.complete():
yield 'hunk', current_hunk
else:
raise PatchError(_("malformed patch %s %s") % (afile,
current_hunk.desc))
if hunknum == 0 and dopatch and not gitworkdone:
raise NoHunks
def applydiff(ui, fp, changed, strip=1, sourcefile=None, reverse=False,
rejmerge=None, updatedir=None):
"""reads a patch from fp and tries to apply it. The dict 'changed' is
filled in with all of the filenames changed by the patch. Returns 0
for a clean patch, -1 if any rejects were found and 1 if there was
any fuzz."""
rejects = 0
err = 0
current_file = None
gitpatches = None
def closefile():
if not current_file:
return 0
current_file.close()
if rejmerge:
rejmerge(current_file)
return len(current_file.rej)
for state, values in iterhunks(ui, fp, sourcefile):
if state == 'hunk':
if not current_file:
continue
current_hunk = values
ret = current_file.apply(current_hunk, reverse)
if ret >= 0:
changed.setdefault(current_file.fname, (None, None))
if ret > 0:
err = 1
elif state == 'file':
rejects += closefile()
afile, bfile, first_hunk = values
try:
if sourcefile:
current_file = patchfile(ui, sourcefile)
else:
current_file, missing = selectfile(afile, bfile, first_hunk,
strip, reverse)
current_file = patchfile(ui, current_file, missing)
except PatchError, err:
ui.warn(str(err) + '\n')
current_file, current_hunk = None, None
rejects += 1
continue
elif state == 'git':
gitpatches = values
for gp in gitpatches:
if gp.op in ('COPY', 'RENAME'):
copyfile(gp.oldpath, gp.path)
changed[gp.path] = (gp.op, gp)
else:
raise util.Abort(_('unsupported parser state: %s') % state)
rejects += closefile()
if updatedir and gitpatches:
updatedir(gitpatches)
if rejects:
return -1
return err
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'),
context=get('unified'))
def updatedir(ui, repo, patches):
'''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))
removes[gp.oldpath] = 1
elif ctype == 'COPY':
copies.append((gp.oldpath, gp.path))
elif ctype == 'DELETE':
removes[gp.path] = 1
for src, dst in copies:
repo.copy(src, dst)
removes = removes.keys()
if removes:
removes.sort()
repo.remove(removes, True)
for f in patches:
ctype, gp = patches[f]
if gp and gp.mode:
flags = ''
if gp.mode & 0100:
flags = 'x'
elif gp.mode & 020000:
flags = 'l'
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, '', flags)
else:
util.set_flags(dst, flags)
cmdutil.addremove(repo, cfiles)
files = patches.keys()
files.extend([r for r in removes if r not in files])
files.sort()
return files
def b85diff(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
linkf2 = ctx2.manifest().linkf
else:
ctx2 = context.workingctx(repo)
execf2 = util.execfunc(repo.root, None)
linkf2 = util.linkfunc(repo.root, None)
if execf2 is None:
mc = ctx2.parents()[0].manifest().copy()
execf2 = mc.execf
linkf2 = mc.linkf
# 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
# This will only really work if c1 is the Nth 1st parent of c2.
def renamed(c1, c2, man, f):
startrev = c1.rev()
c = c2
crev = c.rev()
if crev is None:
crev = repo.changelog.count()
orig = f
files = (f,)
while crev > startrev:
if f in 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)
files = c.files()
if f not in man:
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 = {}
c1, c2 = ctx1, ctx2
files = added
man = man1
if node2 and ctx1.rev() >= ctx2.rev():
# renamed() starts at c2 and walks back in history until c1.
# Since ctx1.rev() >= ctx2.rev(), invert ctx2 and ctx1 to
# detect (inverted) copies.
c1, c2 = ctx2, ctx1
files = removed
man = ctx2.manifest()
for f in files:
src = renamed(c1, c2, man, f)
if src:
copied[f] = src
if ctx1 == c2:
# invert the copied dict
copied = dict([(v, k) for (k, v) in copied.iteritems()])
# If we've renamed file foo to bar (copied['bar'] = 'foo'),
# avoid showing a diff for foo if we're going to show
# the rename to bar.
srcs = [x[1] for x in copied.iteritems() if x[0] in added]
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()
a, b = f, f
if opts.git:
def gitmode(x, l):
return l and '120000' or (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)
if f in added:
mode = gitmode(execf2(f), linkf2(f))
if f in copied:
a = copied[f]
omode = gitmode(man1.execf(a), man1.linkf(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), man1.linkf(f))
header.append('deleted file mode %s\n' % mode)
else:
omode = gitmode(man1.execf(f), man1.linkf(f))
nmode = gitmode(execf2(f), linkf2(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(to, tn)
else:
text = mdiff.unidiff(to, date1,
# ctx2 date may be dynamic
tn, util.datestr(ctx2.date()),
a, b, 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:
p.tochild.write(line + "\n")
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)
return stat
except: raise
finally:
try: os.unlink(name)
except: pass