Mercurial > hg > mercurial-crew-with-dirclash
view mercurial/patch.py @ 3789:734b1d6ba3dc
Use python instead of shell printf with \x sequences for test-encoding.
Needed e.g. to be compatible with Solaris.
author | Thomas Arendsen Hein <thomas@intevation.de> |
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date | Tue, 05 Dec 2006 11:23:37 +0100 |
parents | 9e248cfd8b94 |
children | abaee83ce0a6 504dee0abeac |
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# 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) util.copyfile(abssrc, absdst) # 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 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 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 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(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, '') 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 # returns False if there was no rename between n1 and n2 # returns None if the file was created between n1 and n2 # returns the (file, node) present in n1 that was renamed to f in n2 def renamedbetween(f, n1, n2): r1, r2 = map(repo.changelog.rev, (n1, n2)) orig = f src = None while r2 > r1: cl = getchangelog(n2) if f in cl[3]: m = getmanifest(cl[0]) 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) cl = getchangelog(n1) m = getmanifest(cl[0]) if f not in m: return None if f == orig: return False return f, m[f] 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 of = renamedbetween(f, node1, parent) if of or of is None: 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() gone = {} 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) 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 = 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