# patch.py - patch file parsing routines # # Copyright 2006 Brendan Cully # Copyright 2007 Chris Mason # # 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 hex, nullid, short import base85, cmdutil, mdiff, util, revlog, diffhelpers, copies import cStringIO, email.Parser, os, re, errno import sys, tempfile, zlib gitre = re.compile('diff --git a/(.*) b/(.*)') 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) if not os.path.isdir(basedir): os.makedirs(basedir) 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 class patchmeta: """Patched file metadata 'op' is the performed operation within ADD, DELETE, RENAME, MODIFY or COPY. 'path' is patched file path. 'oldpath' is set to the origin file when 'op' is either COPY or RENAME, None otherwise. If file mode is changed, 'mode' is a tuple (islink, isexec) where 'islink' is True if the file is a symlink and 'isexec' is True if the file is executable. Otherwise, 'mode' is None. """ def __init__(self, path): self.path = path self.oldpath = None self.mode = None self.op = 'MODIFY' self.lineno = 0 self.binary = False def setmode(self, mode): islink = mode & 020000 isexec = mode & 0100 self.mode = (islink, isexec) def readgitpatch(lr): """extract git-style metadata about patches from """ # Filter patch for git information gp = None gitpatches = [] # Can have a git patch with only metadata, causing patch to complain dopatch = 0 lineno = 0 for line in lr: 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 = patchmeta(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.setmode(int(line.rstrip()[-6:], 8)) elif line.startswith('new mode '): gp.setmode(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) # @@ -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, opener, missing=False): self.fname = fname self.opener = opener self.ui = ui self.lines = [] self.exists = False self.missing = missing if not missing: try: self.lines = self.readlines(fname) self.exists = True except IOError: pass else: self.ui.warn(_("unable to find '%s' for patching\n") % self.fname) self.hash = {} self.dirty = 0 self.offset = 0 self.rej = [] self.fileprinted = False self.printfile(False) self.hunks = 0 def readlines(self, fname): fp = self.opener(fname, 'r') try: return fp.readlines() finally: fp.close() def writelines(self, fname, lines): fp = self.opener(fname, 'w') try: fp.writelines(lines) finally: fp.close() def unlink(self, fname): os.unlink(fname) 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 fname = self.fname + ".rej" self.ui.warn( _("%d out of %d hunks FAILED -- saving rejects to file %s\n") % (len(self.rej), self.hunks, fname)) def rejlines(): base = os.path.basename(self.fname) yield "--- %s\n+++ %s\n" % (base, base) for x in self.rej: for l in x.hunk: yield l if l[-1] != '\n': yield "\n\ No newline at end of file\n" self.writelines(fname, rejlines()) def write(self, dest=None): if not self.dirty: return if not dest: dest = self.fname self.writelines(dest, self.lines) 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(): self.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(): self.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, create=False, remove=False): 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.create = create self.remove = remove and not create 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, 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): self.create, self.remove = self.remove, self.create 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): return self.starta == 0 and self.lena == 0 and self.create def rmfile(self): return self.startb == 0 and self.lenb == 0 and self.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, lr): line = lr.readline() self.hunk.append(line) while line and not line.startswith('literal '): line = lr.readline() self.hunk.append(line) if not line: raise PatchError(_('could not extract binary patch')) size = int(line[8:].rstrip()) dec = [] line = lr.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 = lr.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].lstrip(), path[i:].rstrip() nulla = afile_orig == "/dev/null" nullb = bfile_orig == "/dev/null" abase, afile = pathstrip(afile_orig, strip) gooda = not nulla and os.path.exists(afile) bbase, 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() # If afile is "a/b/foo" and bfile is "a/b/foo.orig" we assume the # diff is between a file and its backup. In this case, the original # file should be patched (see original mpatch code). isbackup = (abase == bbase and bfile.startswith(afile)) fname = None if not missing: if gooda and goodb: fname = isbackup and afile or bfile elif gooda: fname = afile if not fname: if not nullb: fname = isbackup 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): if line is not None: 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 __iter__(self): while 1: l = self.readline() if not l: break yield l def scangitpatch(lr, firstline): """ Git patches can emit: - rename a to b - change b - copy a to c - change c We cannot apply this sequence as-is, the renamed 'a' could not be found for it would have been renamed already. And we cannot copy from 'b' instead because 'b' would have been changed already. So we scan the git patch for copy and rename commands so we can perform the copies ahead of time. """ pos = 0 try: pos = lr.fp.tell() fp = lr.fp except IOError: fp = cStringIO.StringIO(lr.fp.read()) gitlr = linereader(fp) gitlr.push(firstline) (dopatch, gitpatches) = readgitpatch(gitlr) fp.seek(pos) return dopatch, gitpatches 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. """ changed = {} current_hunk = None afile = "" bfile = "" state = None hunknum = 0 emitfile = False git = False # our states BFILE = 1 context = None lr = linereader(fp) dopatch = True # gitworkdone is True if a git operation (copy, rename, ...) was # performed already for the current file. Useful when the file # section may have no hunk. 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) create = afile == '/dev/null' or gpatch and gpatch.op == 'ADD' remove = bfile == '/dev/null' or gpatch and gpatch.op == 'DELETE' current_hunk = hunk(x, hunknum + 1, lr, context, create, remove) 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]) hunknum += 1 if emitfile: emitfile = False yield 'file', ('a/' + afile, 'b/' + bfile, current_hunk) current_hunk.extract(lr) 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 dopatch, gitpatches = scangitpatch(lr, x) yield 'git', gitpatches for gp in gitpatches: changed[gp.path] = gp # else error? # copy/rename + modify should modify target, not source gp = changed.get(bfile) if gp and gp.op in ('COPY', 'DELETE', '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): """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 opener = util.opener(os.getcwd()) def closefile(): if not current_file: return 0 current_file.close() 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) if ret > 0: err = 1 elif state == 'file': rejects += closefile() afile, bfile, first_hunk = values try: if sourcefile: current_file = patchfile(ui, sourcefile, opener) else: current_file, missing = selectfile(afile, bfile, first_hunk, strip, reverse) current_file = patchfile(ui, current_file, opener, missing) except PatchError, err: ui.warn(str(err) + '\n') current_file, current_hunk = None, None rejects += 1 continue elif state == 'git': gitpatches = values cwd = os.getcwd() for gp in gitpatches: if gp.op in ('COPY', 'RENAME'): src, dst = [util.canonpath(cwd, cwd, x) for x in [gp.oldpath, gp.path]] copyfile(src, dst) changed[gp.path] = gp else: raise util.Abort(_('unsupported parser state: %s') % state) rejects += closefile() if rejects: return -1 return err def diffopts(ui, opts={}, untrusted=False): def get(key, name=None, getter=ui.configbool): return (opts.get(key) or getter('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', getter=ui.config)) 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: gp = patches[f] if not gp: continue if gp.op == 'RENAME': copies.append((gp.oldpath, gp.path)) removes[gp.oldpath] = 1 elif gp.op == 'COPY': copies.append((gp.oldpath, gp.path)) elif gp.op == 'DELETE': removes[gp.path] = 1 for src, dst in copies: repo.copy(src, dst) removes = removes.keys() if removes: repo.remove(util.sort(removes), True) for f in patches: gp = patches[f] if gp and gp.mode: islink, isexec = gp.mode dst = os.path.join(repo.root, gp.path) # patch won't create empty files if gp.op == 'ADD' and not os.path.exists(dst): flags = (isexec and 'x' or '') + (islink and 'l' or '') repo.wwrite(gp.path, '', flags) else: util.set_flags(dst, islink, isexec) cmdutil.addremove(repo, cfiles) files = patches.keys() files.extend([r for r in removes if r not in files]) return util.sort(files) def externalpatch(patcher, args, patchname, ui, strip, cwd, files): """use to apply 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) 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 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 def patch(patchname, ui, strip=1, cwd=None, files={}): """apply 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 b85diff(to, tn): '''print base85-encoded binary diff''' def gitindex(text): if not text: return '0' * 40 l = len(text) s = util.sha1('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 _addmodehdr(header, omode, nmode): if omode != nmode: header.append('old mode %s\n' % omode) header.append('new mode %s\n' % nmode) def diff(repo, node1=None, node2=None, match=None, changes=None, opts=None): '''yields 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 not match: match = cmdutil.matchall(repo) if opts is None: opts = mdiff.defaultopts if not node1: node1 = repo.dirstate.parents()[0] flcache = {} def getfilectx(f, ctx): flctx = ctx.filectx(f, filelog=flcache.get(f)) if f not in flcache: flcache[f] = flctx._filelog return flctx ctx1 = repo[node1] ctx2 = repo[node2] if not changes: changes = repo.status(ctx1, ctx2, match=match) modified, added, removed = changes[:3] if not modified and not added and not removed: return date1 = util.datestr(ctx1.date()) man1 = ctx1.manifest() 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: copy, diverge = copies.copies(repo, ctx1, ctx2, repo[nullid]) for k, v in copy.items(): copy[v] = k gone = {} gitmode = {'l': '120000', 'x': '100755', '': '100644'} for f in util.sort(modified + added + removed): 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: if f in added: mode = gitmode[ctx2.flags(f)] if f in copy: a = copy[f] omode = gitmode[man1.flags(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: # have we already reported a copy above? if f in copy and copy[f] in added and copy[copy[f]] == f: dodiff = False else: header.append('deleted file mode %s\n' % gitmode[man1.flags(f)]) else: omode = gitmode[man1.flags(f)] nmode = gitmode[ctx2.flags(f)] _addmodehdr(header, omode, nmode) if util.binary(to) or util.binary(tn): dodiff = 'binary' r = None header.insert(0, mdiff.diffline(r, a, b, opts)) 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 header and (text or len(header) > 1): yield ''.join(header) if text: yield 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[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, mode='ab') 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") for chunk in diff(repo, prev, node, opts=opts): fp.write(chunk) 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 output = util.filter('\n'.join(patchlines), 'diffstat -p1 -w79 2>%s' % util.nulldev) stat = [l.lstrip() for l in output.splitlines(True)] last = stat.pop() stat.insert(0, last) stat = ''.join(stat) return stat