1455 lines
48 KiB
Python
1455 lines
48 KiB
Python
# patch.py - patch file parsing routines
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#
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# Copyright 2006 Brendan Cully <brendan@kublai.com>
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# Copyright 2007 Chris Mason <chris.mason@oracle.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2, incorporated herein by reference.
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from i18n import _
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from node import hex, nullid, short
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import base85, cmdutil, mdiff, util, diffhelpers, copies
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import cStringIO, email.Parser, os, re
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import sys, tempfile, zlib
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gitre = re.compile('diff --git a/(.*) b/(.*)')
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class PatchError(Exception):
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pass
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class NoHunks(PatchError):
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pass
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# helper functions
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def copyfile(src, dst, basedir):
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abssrc, absdst = [util.canonpath(basedir, basedir, x) for x in [src, dst]]
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if os.path.exists(absdst):
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raise util.Abort(_("cannot create %s: destination already exists") %
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dst)
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dstdir = os.path.dirname(absdst)
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if dstdir and not os.path.isdir(dstdir):
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try:
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os.makedirs(dstdir)
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except IOError:
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raise util.Abort(
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_("cannot create %s: unable to create destination directory")
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% dst)
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util.copyfile(abssrc, absdst)
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# public functions
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def extract(ui, fileobj):
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'''extract patch from data read from fileobj.
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patch can be a normal patch or contained in an email message.
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return tuple (filename, message, user, date, node, p1, p2).
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Any item in the returned tuple can be None. If filename is None,
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fileobj did not contain a patch. Caller must unlink filename when done.'''
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# attempt to detect the start of a patch
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# (this heuristic is borrowed from quilt)
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diffre = re.compile(r'^(?:Index:[ \t]|diff[ \t]|RCS file: |'
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r'retrieving revision [0-9]+(\.[0-9]+)*$|'
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r'(---|\*\*\*)[ \t])', re.MULTILINE)
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fd, tmpname = tempfile.mkstemp(prefix='hg-patch-')
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tmpfp = os.fdopen(fd, 'w')
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try:
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msg = email.Parser.Parser().parse(fileobj)
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subject = msg['Subject']
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user = msg['From']
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gitsendmail = 'git-send-email' in msg.get('X-Mailer', '')
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# should try to parse msg['Date']
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date = None
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nodeid = None
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branch = None
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parents = []
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if subject:
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if subject.startswith('[PATCH'):
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pend = subject.find(']')
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if pend >= 0:
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subject = subject[pend+1:].lstrip()
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subject = subject.replace('\n\t', ' ')
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ui.debug('Subject: %s\n' % subject)
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if user:
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ui.debug('From: %s\n' % user)
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diffs_seen = 0
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ok_types = ('text/plain', 'text/x-diff', 'text/x-patch')
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message = ''
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for part in msg.walk():
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content_type = part.get_content_type()
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ui.debug('Content-Type: %s\n' % content_type)
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if content_type not in ok_types:
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continue
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payload = part.get_payload(decode=True)
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m = diffre.search(payload)
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if m:
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hgpatch = False
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ignoretext = False
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ui.debug(_('found patch at byte %d\n') % m.start(0))
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diffs_seen += 1
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cfp = cStringIO.StringIO()
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for line in payload[:m.start(0)].splitlines():
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if line.startswith('# HG changeset patch'):
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ui.debug(_('patch generated by hg export\n'))
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hgpatch = True
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# drop earlier commit message content
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cfp.seek(0)
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cfp.truncate()
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subject = None
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elif hgpatch:
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if line.startswith('# User '):
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user = line[7:]
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ui.debug('From: %s\n' % user)
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elif line.startswith("# Date "):
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date = line[7:]
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elif line.startswith("# Branch "):
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branch = line[9:]
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elif line.startswith("# Node ID "):
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nodeid = line[10:]
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elif line.startswith("# Parent "):
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parents.append(line[10:])
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elif line == '---' and gitsendmail:
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ignoretext = True
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if not line.startswith('# ') and not ignoretext:
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cfp.write(line)
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cfp.write('\n')
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message = cfp.getvalue()
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if tmpfp:
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tmpfp.write(payload)
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if not payload.endswith('\n'):
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tmpfp.write('\n')
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elif not diffs_seen and message and content_type == 'text/plain':
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message += '\n' + payload
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except:
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tmpfp.close()
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os.unlink(tmpname)
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raise
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if subject and not message.startswith(subject):
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message = '%s\n%s' % (subject, message)
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tmpfp.close()
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if not diffs_seen:
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os.unlink(tmpname)
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return None, message, user, date, branch, None, None, None
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p1 = parents and parents.pop(0) or None
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p2 = parents and parents.pop(0) or None
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return tmpname, message, user, date, branch, nodeid, p1, p2
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GP_PATCH = 1 << 0 # we have to run patch
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GP_FILTER = 1 << 1 # there's some copy/rename operation
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GP_BINARY = 1 << 2 # there's a binary patch
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class patchmeta(object):
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"""Patched file metadata
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'op' is the performed operation within ADD, DELETE, RENAME, MODIFY
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or COPY. 'path' is patched file path. 'oldpath' is set to the
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origin file when 'op' is either COPY or RENAME, None otherwise. If
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file mode is changed, 'mode' is a tuple (islink, isexec) where
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'islink' is True if the file is a symlink and 'isexec' is True if
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the file is executable. Otherwise, 'mode' is None.
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"""
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def __init__(self, path):
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self.path = path
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self.oldpath = None
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self.mode = None
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self.op = 'MODIFY'
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self.lineno = 0
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self.binary = False
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def setmode(self, mode):
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islink = mode & 020000
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isexec = mode & 0100
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self.mode = (islink, isexec)
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def readgitpatch(lr):
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"""extract git-style metadata about patches from <patchname>"""
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# Filter patch for git information
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gp = None
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gitpatches = []
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# Can have a git patch with only metadata, causing patch to complain
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dopatch = 0
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lineno = 0
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for line in lr:
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lineno += 1
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line = line.rstrip(' \r\n')
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if line.startswith('diff --git'):
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m = gitre.match(line)
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if m:
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if gp:
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gitpatches.append(gp)
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src, dst = m.group(1, 2)
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gp = patchmeta(dst)
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gp.lineno = lineno
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elif gp:
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if line.startswith('--- '):
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if gp.op in ('COPY', 'RENAME'):
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dopatch |= GP_FILTER
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gitpatches.append(gp)
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gp = None
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dopatch |= GP_PATCH
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continue
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if line.startswith('rename from '):
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gp.op = 'RENAME'
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gp.oldpath = line[12:]
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elif line.startswith('rename to '):
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gp.path = line[10:]
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elif line.startswith('copy from '):
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gp.op = 'COPY'
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gp.oldpath = line[10:]
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elif line.startswith('copy to '):
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gp.path = line[8:]
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elif line.startswith('deleted file'):
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gp.op = 'DELETE'
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# is the deleted file a symlink?
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gp.setmode(int(line[-6:], 8))
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elif line.startswith('new file mode '):
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gp.op = 'ADD'
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gp.setmode(int(line[-6:], 8))
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elif line.startswith('new mode '):
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gp.setmode(int(line[-6:], 8))
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elif line.startswith('GIT binary patch'):
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dopatch |= GP_BINARY
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gp.binary = True
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if gp:
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gitpatches.append(gp)
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if not gitpatches:
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dopatch = GP_PATCH
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return (dopatch, gitpatches)
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class linereader(object):
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# simple class to allow pushing lines back into the input stream
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def __init__(self, fp, textmode=False):
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self.fp = fp
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self.buf = []
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self.textmode = textmode
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def push(self, line):
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if line is not None:
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self.buf.append(line)
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def readline(self):
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if self.buf:
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l = self.buf[0]
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del self.buf[0]
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return l
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l = self.fp.readline()
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if self.textmode and l.endswith('\r\n'):
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l = l[:-2] + '\n'
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return l
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def __iter__(self):
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while 1:
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l = self.readline()
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if not l:
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break
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yield l
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# @@ -start,len +start,len @@ or @@ -start +start @@ if len is 1
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unidesc = re.compile('@@ -(\d+)(,(\d+))? \+(\d+)(,(\d+))? @@')
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contextdesc = re.compile('(---|\*\*\*) (\d+)(,(\d+))? (---|\*\*\*)')
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class patchfile(object):
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def __init__(self, ui, fname, opener, missing=False, eol=None):
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self.fname = fname
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self.eol = eol
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self.opener = opener
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self.ui = ui
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self.lines = []
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self.exists = False
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self.missing = missing
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if not missing:
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try:
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self.lines = self.readlines(fname)
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self.exists = True
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except IOError:
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pass
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else:
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self.ui.warn(_("unable to find '%s' for patching\n") % self.fname)
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self.hash = {}
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self.dirty = 0
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self.offset = 0
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self.rej = []
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self.fileprinted = False
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self.printfile(False)
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self.hunks = 0
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def readlines(self, fname):
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fp = self.opener(fname, 'r')
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try:
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return list(linereader(fp, self.eol is not None))
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finally:
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fp.close()
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def writelines(self, fname, lines):
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fp = self.opener(fname, 'w')
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try:
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if self.eol and self.eol != '\n':
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for l in lines:
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if l and l[-1] == '\n':
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l = l[:-1] + self.eol
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fp.write(l)
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else:
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fp.writelines(lines)
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finally:
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fp.close()
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def unlink(self, fname):
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os.unlink(fname)
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def printfile(self, warn):
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if self.fileprinted:
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return
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if warn or self.ui.verbose:
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self.fileprinted = True
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s = _("patching file %s\n") % self.fname
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if warn:
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self.ui.warn(s)
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else:
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self.ui.note(s)
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def findlines(self, l, linenum):
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# looks through the hash and finds candidate lines. The
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# result is a list of line numbers sorted based on distance
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# from linenum
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try:
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cand = self.hash[l]
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except:
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return []
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if len(cand) > 1:
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# resort our list of potentials forward then back.
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cand.sort(key=lambda x: abs(x - linenum))
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return cand
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def hashlines(self):
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self.hash = {}
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for x, s in enumerate(self.lines):
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self.hash.setdefault(s, []).append(x)
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def write_rej(self):
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# our rejects are a little different from patch(1). This always
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# creates rejects in the same form as the original patch. A file
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# header is inserted so that you can run the reject through patch again
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# without having to type the filename.
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if not self.rej:
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return
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fname = self.fname + ".rej"
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self.ui.warn(
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_("%d out of %d hunks FAILED -- saving rejects to file %s\n") %
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(len(self.rej), self.hunks, fname))
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def rejlines():
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base = os.path.basename(self.fname)
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yield "--- %s\n+++ %s\n" % (base, base)
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for x in self.rej:
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for l in x.hunk:
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yield l
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if l[-1] != '\n':
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yield "\n\ No newline at end of file\n"
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self.writelines(fname, rejlines())
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def write(self, dest=None):
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if not self.dirty:
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return
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if not dest:
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dest = self.fname
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self.writelines(dest, self.lines)
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def close(self):
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self.write()
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self.write_rej()
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def apply(self, h, reverse):
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if not h.complete():
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raise PatchError(_("bad hunk #%d %s (%d %d %d %d)") %
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(h.number, h.desc, len(h.a), h.lena, len(h.b),
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h.lenb))
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self.hunks += 1
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if reverse:
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h.reverse()
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if self.missing:
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self.rej.append(h)
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return -1
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if self.exists and h.createfile():
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self.ui.warn(_("file %s already exists\n") % self.fname)
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self.rej.append(h)
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return -1
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if isinstance(h, githunk):
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if h.rmfile():
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self.unlink(self.fname)
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else:
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self.lines[:] = h.new()
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self.offset += len(h.new())
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self.dirty = 1
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return 0
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# fast case first, no offsets, no fuzz
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old = h.old()
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# patch starts counting at 1 unless we are adding the file
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if h.starta == 0:
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start = 0
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else:
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start = h.starta + self.offset - 1
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orig_start = start
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if diffhelpers.testhunk(old, self.lines, start) == 0:
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if h.rmfile():
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self.unlink(self.fname)
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else:
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self.lines[start : start + h.lena] = h.new()
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self.offset += h.lenb - h.lena
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self.dirty = 1
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return 0
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# ok, we couldn't match the hunk. Lets look for offsets and fuzz it
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self.hashlines()
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if h.hunk[-1][0] != ' ':
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# if the hunk tried to put something at the bottom of the file
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# override the start line and use eof here
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search_start = len(self.lines)
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else:
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search_start = orig_start
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for fuzzlen in xrange(3):
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for toponly in [ True, False ]:
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old = h.old(fuzzlen, toponly)
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cand = self.findlines(old[0][1:], search_start)
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for l in cand:
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if diffhelpers.testhunk(old, self.lines, l) == 0:
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newlines = h.new(fuzzlen, toponly)
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self.lines[l : l + len(old)] = newlines
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self.offset += len(newlines) - len(old)
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self.dirty = 1
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if fuzzlen:
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fuzzstr = "with fuzz %d " % fuzzlen
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f = self.ui.warn
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self.printfile(True)
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else:
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fuzzstr = ""
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f = self.ui.note
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offset = l - orig_start - fuzzlen
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if offset == 1:
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msg = _("Hunk #%d succeeded at %d %s"
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"(offset %d line).\n")
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else:
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msg = _("Hunk #%d succeeded at %d %s"
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"(offset %d lines).\n")
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f(msg % (h.number, l+1, fuzzstr, offset))
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return fuzzlen
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self.printfile(True)
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self.ui.warn(_("Hunk #%d FAILED at %d\n") % (h.number, orig_start))
|
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self.rej.append(h)
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return -1
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class hunk(object):
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def __init__(self, desc, num, lr, context, create=False, remove=False):
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self.number = num
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self.desc = desc
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self.hunk = [ desc ]
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self.a = []
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self.b = []
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if context:
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self.read_context_hunk(lr)
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else:
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self.read_unified_hunk(lr)
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self.create = create
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self.remove = remove and not create
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def read_unified_hunk(self, lr):
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m = unidesc.match(self.desc)
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if not m:
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raise PatchError(_("bad hunk #%d") % self.number)
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self.starta, foo, self.lena, self.startb, foo2, self.lenb = m.groups()
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if self.lena is None:
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self.lena = 1
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else:
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self.lena = int(self.lena)
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if self.lenb is None:
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self.lenb = 1
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else:
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self.lenb = int(self.lenb)
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self.starta = int(self.starta)
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self.startb = int(self.startb)
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diffhelpers.addlines(lr, self.hunk, self.lena, self.lenb, self.a, self.b)
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# if we hit eof before finishing out the hunk, the last line will
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# be zero length. Lets try to fix it up.
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while len(self.hunk[-1]) == 0:
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del self.hunk[-1]
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del self.a[-1]
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del self.b[-1]
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self.lena -= 1
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self.lenb -= 1
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def read_context_hunk(self, lr):
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self.desc = lr.readline()
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m = contextdesc.match(self.desc)
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if not m:
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raise PatchError(_("bad hunk #%d") % self.number)
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foo, self.starta, foo2, aend, foo3 = m.groups()
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self.starta = int(self.starta)
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if aend is None:
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aend = self.starta
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self.lena = int(aend) - self.starta
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if self.starta:
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self.lena += 1
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|
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 is 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 githunk(object):
|
|
"""A git hunk"""
|
|
def __init__(self, gitpatch):
|
|
self.gitpatch = gitpatch
|
|
self.text = None
|
|
self.hunk = []
|
|
|
|
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]
|
|
|
|
class binhunk(githunk):
|
|
'A binary patch file. Only understands literals so far.'
|
|
def __init__(self, gitpatch):
|
|
super(binhunk, self).__init__(gitpatch)
|
|
self.hunk = ['GIT binary patch\n']
|
|
|
|
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
|
|
|
|
class symlinkhunk(githunk):
|
|
"""A git symlink hunk"""
|
|
def __init__(self, gitpatch, hunk):
|
|
super(symlinkhunk, self).__init__(gitpatch)
|
|
self.hunk = hunk
|
|
|
|
def complete(self):
|
|
return True
|
|
|
|
def fix_newline(self):
|
|
return
|
|
|
|
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 util.lexists(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()
|
|
|
|
# some diff programs apparently produce create patches where the
|
|
# afile is not /dev/null, but rather the same name as the bfile
|
|
if missing and afile == bfile:
|
|
# this isn't very pretty
|
|
hunk.create = True
|
|
if createfunc():
|
|
missing = False
|
|
else:
|
|
hunk.create = False
|
|
|
|
# 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
|
|
|
|
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, lr.textmode)
|
|
gitlr.push(firstline)
|
|
(dopatch, gitpatches) = readgitpatch(gitlr)
|
|
fp.seek(pos)
|
|
return dopatch, gitpatches
|
|
|
|
def iterhunks(ui, fp, sourcefile=None, textmode=False):
|
|
"""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.
|
|
|
|
If textmode is True, input line-endings are normalized to LF.
|
|
"""
|
|
changed = {}
|
|
current_hunk = None
|
|
afile = ""
|
|
bfile = ""
|
|
state = None
|
|
hunknum = 0
|
|
emitfile = False
|
|
git = False
|
|
|
|
# our states
|
|
BFILE = 1
|
|
context = None
|
|
lr = linereader(fp, textmode)
|
|
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 is not False) and x.startswith('***************')))):
|
|
try:
|
|
if context is 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)
|
|
if remove:
|
|
gpatch = changed.get(afile[2:])
|
|
if gpatch and gpatch.mode[0]:
|
|
current_hunk = symlinkhunk(gpatch, current_hunk)
|
|
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', 'ADD'):
|
|
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,
|
|
eol=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.
|
|
|
|
If 'eol' is None, the patch content and patched file are read in
|
|
binary mode. Otherwise, line endings are ignored when patching then
|
|
normalized to 'eol' (usually '\n' or \r\n').
|
|
"""
|
|
rejects = 0
|
|
err = 0
|
|
current_file = None
|
|
gitpatches = None
|
|
opener = util.opener(os.getcwd())
|
|
textmode = eol is not None
|
|
|
|
def closefile():
|
|
if not current_file:
|
|
return 0
|
|
current_file.close()
|
|
return len(current_file.rej)
|
|
|
|
for state, values in iterhunks(ui, fp, sourcefile, textmode):
|
|
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, eol=eol)
|
|
else:
|
|
current_file, missing = selectfile(afile, bfile, first_hunk,
|
|
strip, reverse)
|
|
current_file = patchfile(ui, current_file, opener, missing, eol)
|
|
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'):
|
|
copyfile(gp.oldpath, gp.path, cwd)
|
|
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, similarity=0):
|
|
'''Update dirstate after patch application according to metadata'''
|
|
if not patches:
|
|
return
|
|
copies = []
|
|
removes = set()
|
|
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.add(gp.oldpath)
|
|
elif gp.op == 'COPY':
|
|
copies.append((gp.oldpath, gp.path))
|
|
elif gp.op == 'DELETE':
|
|
removes.add(gp.path)
|
|
for src, dst in copies:
|
|
repo.copy(src, dst)
|
|
if (not similarity) and removes:
|
|
repo.remove(sorted(removes), True)
|
|
for f in patches:
|
|
gp = patches[f]
|
|
if gp and gp.mode:
|
|
islink, isexec = gp.mode
|
|
dst = repo.wjoin(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)
|
|
elif gp.op != 'DELETE':
|
|
util.set_flags(dst, islink, isexec)
|
|
cmdutil.addremove(repo, cfiles, similarity=similarity)
|
|
files = patches.keys()
|
|
files.extend([r for r in removes if r not in files])
|
|
return sorted(files)
|
|
|
|
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)
|
|
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={}, eolmode='strict'):
|
|
"""use builtin patch to apply <patchobj> to the working directory.
|
|
returns whether patch was applied with fuzz factor."""
|
|
|
|
if eolmode is None:
|
|
eolmode = ui.config('patch', 'eol', 'strict')
|
|
try:
|
|
eol = {'strict': None, 'crlf': '\r\n', 'lf': '\n'}[eolmode.lower()]
|
|
except KeyError:
|
|
raise util.Abort(_('Unsupported line endings type: %s') % eolmode)
|
|
|
|
try:
|
|
fp = open(patchobj, 'rb')
|
|
except TypeError:
|
|
fp = patchobj
|
|
if cwd:
|
|
curdir = os.getcwd()
|
|
os.chdir(cwd)
|
|
try:
|
|
ret = applydiff(ui, fp, files, strip=strip, eol=eol)
|
|
finally:
|
|
if cwd:
|
|
os.chdir(curdir)
|
|
if ret < 0:
|
|
raise PatchError
|
|
return ret > 0
|
|
|
|
def patch(patchname, ui, strip=1, cwd=None, files={}, eolmode='strict'):
|
|
"""Apply <patchname> to the working directory.
|
|
|
|
'eolmode' specifies how end of lines should be handled. It can be:
|
|
- 'strict': inputs are read in binary mode, EOLs are preserved
|
|
- 'crlf': EOLs are ignored when patching and reset to CRLF
|
|
- 'lf': EOLs are ignored when patching and reset to LF
|
|
- None: get it from user settings, default to 'strict'
|
|
'eolmode' is ignored when using an external patcher program.
|
|
|
|
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, eolmode)
|
|
except NoHunks:
|
|
patcher = util.find_exe('gpatch') or util.find_exe('patch') or '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 opts is None:
|
|
opts = mdiff.defaultopts
|
|
|
|
if not node1:
|
|
node1 = repo.dirstate.parents()[0]
|
|
|
|
def lrugetfilectx():
|
|
cache = {}
|
|
order = []
|
|
def getfilectx(f, ctx):
|
|
fctx = ctx.filectx(f, filelog=cache.get(f))
|
|
if f not in cache:
|
|
if len(cache) > 20:
|
|
del cache[order.pop(0)]
|
|
cache[f] = fctx._filelog
|
|
else:
|
|
order.remove(f)
|
|
order.append(f)
|
|
return fctx
|
|
return getfilectx
|
|
getfilectx = lrugetfilectx()
|
|
|
|
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])
|
|
copy = copy.copy()
|
|
for k, v in copy.items():
|
|
copy[v] = k
|
|
|
|
gone = set()
|
|
gitmode = {'l': '120000', 'x': '100755', '': '100644'}
|
|
|
|
for f in sorted(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.add(a)
|
|
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)
|
|
|
|
for seqno, rev in enumerate(revs):
|
|
single(rev, seqno+1, fp)
|
|
|
|
def diffstatdata(lines):
|
|
filename, adds, removes = None, 0, 0
|
|
for line in lines:
|
|
if line.startswith('diff'):
|
|
if filename:
|
|
yield (filename, adds, removes)
|
|
# set numbers to 0 anyway when starting new file
|
|
adds, removes = 0, 0
|
|
if line.startswith('diff --git'):
|
|
filename = gitre.search(line).group(1)
|
|
else:
|
|
# format: "diff -r ... -r ... filename"
|
|
filename = line.split(None, 5)[-1]
|
|
elif line.startswith('+') and not line.startswith('+++'):
|
|
adds += 1
|
|
elif line.startswith('-') and not line.startswith('---'):
|
|
removes += 1
|
|
if filename:
|
|
yield (filename, adds, removes)
|
|
|
|
def diffstat(lines, width=80):
|
|
output = []
|
|
stats = list(diffstatdata(lines))
|
|
|
|
maxtotal, maxname = 0, 0
|
|
totaladds, totalremoves = 0, 0
|
|
for filename, adds, removes in stats:
|
|
totaladds += adds
|
|
totalremoves += removes
|
|
maxname = max(maxname, len(filename))
|
|
maxtotal = max(maxtotal, adds+removes)
|
|
|
|
countwidth = len(str(maxtotal))
|
|
graphwidth = width - countwidth - maxname - 6
|
|
if graphwidth < 10:
|
|
graphwidth = 10
|
|
|
|
def scale(i):
|
|
if maxtotal <= graphwidth:
|
|
return i
|
|
# If diffstat runs out of room it doesn't print anything,
|
|
# which isn't very useful, so always print at least one + or -
|
|
# if there were at least some changes.
|
|
return max(i * graphwidth // maxtotal, int(bool(i)))
|
|
|
|
for filename, adds, removes in stats:
|
|
pluses = '+' * scale(adds)
|
|
minuses = '-' * scale(removes)
|
|
output.append(' %-*s | %*.d %s%s\n' % (maxname, filename, countwidth,
|
|
adds+removes, pluses, minuses))
|
|
|
|
if stats:
|
|
output.append(_(' %d files changed, %d insertions(+), %d deletions(-)\n')
|
|
% (len(stats), totaladds, totalremoves))
|
|
|
|
return ''.join(output)
|