|
|
# filemerge.py - file-level merge handling for Mercurial
|
|
|
#
|
|
|
# Copyright 2006, 2007, 2008 Matt Mackall <mpm@selenic.com>
|
|
|
#
|
|
|
# This software may be used and distributed according to the terms of the
|
|
|
# GNU General Public License version 2, incorporated herein by reference.
|
|
|
|
|
|
from node import short
|
|
|
from i18n import _
|
|
|
import util, simplemerge, match
|
|
|
import os, tempfile, re, filecmp
|
|
|
|
|
|
def _toolstr(ui, tool, part, default=""):
|
|
|
return ui.config("merge-tools", tool + "." + part, default)
|
|
|
|
|
|
def _toolbool(ui, tool, part, default=False):
|
|
|
return ui.configbool("merge-tools", tool + "." + part, default)
|
|
|
|
|
|
def _findtool(ui, tool):
|
|
|
if tool in ("internal:fail", "internal:local", "internal:other"):
|
|
|
return tool
|
|
|
k = _toolstr(ui, tool, "regkey")
|
|
|
if k:
|
|
|
p = util.lookup_reg(k, _toolstr(ui, tool, "regname"))
|
|
|
if p:
|
|
|
p = util.find_exe(p + _toolstr(ui, tool, "regappend"))
|
|
|
if p:
|
|
|
return p
|
|
|
return util.find_exe(_toolstr(ui, tool, "executable", tool))
|
|
|
|
|
|
def _picktool(repo, ui, path, binary, symlink):
|
|
|
def check(tool, pat, symlink, binary):
|
|
|
tmsg = tool
|
|
|
if pat:
|
|
|
tmsg += " specified for " + pat
|
|
|
if not _findtool(ui, tool):
|
|
|
if pat: # explicitly requested tool deserves a warning
|
|
|
ui.warn(_("couldn't find merge tool %s\n") % tmsg)
|
|
|
else: # configured but non-existing tools are more silent
|
|
|
ui.note(_("couldn't find merge tool %s\n") % tmsg)
|
|
|
elif symlink and not _toolbool(ui, tool, "symlink"):
|
|
|
ui.warn(_("tool %s can't handle symlinks\n") % tmsg)
|
|
|
elif binary and not _toolbool(ui, tool, "binary"):
|
|
|
ui.warn(_("tool %s can't handle binary\n") % tmsg)
|
|
|
elif not util.gui() and _toolbool(ui, tool, "gui"):
|
|
|
ui.warn(_("tool %s requires a GUI\n") % tmsg)
|
|
|
else:
|
|
|
return True
|
|
|
return False
|
|
|
|
|
|
# HGMERGE takes precedence
|
|
|
hgmerge = os.environ.get("HGMERGE")
|
|
|
if hgmerge:
|
|
|
return (hgmerge, hgmerge)
|
|
|
|
|
|
# then patterns
|
|
|
for pat, tool in ui.configitems("merge-patterns"):
|
|
|
mf = match.match(repo.root, '', [pat])
|
|
|
if mf(path) and check(tool, pat, symlink, False):
|
|
|
toolpath = _findtool(ui, tool)
|
|
|
return (tool, '"' + toolpath + '"')
|
|
|
|
|
|
# then merge tools
|
|
|
tools = {}
|
|
|
for k,v in ui.configitems("merge-tools"):
|
|
|
t = k.split('.')[0]
|
|
|
if t not in tools:
|
|
|
tools[t] = int(_toolstr(ui, t, "priority", "0"))
|
|
|
names = tools.keys()
|
|
|
tools = sorted([(-p,t) for t,p in tools.items()])
|
|
|
uimerge = ui.config("ui", "merge")
|
|
|
if uimerge:
|
|
|
if uimerge not in names:
|
|
|
return (uimerge, uimerge)
|
|
|
tools.insert(0, (None, uimerge)) # highest priority
|
|
|
tools.append((None, "hgmerge")) # the old default, if found
|
|
|
for p,t in tools:
|
|
|
if check(t, None, symlink, binary):
|
|
|
toolpath = _findtool(ui, t)
|
|
|
return (t, '"' + toolpath + '"')
|
|
|
# internal merge as last resort
|
|
|
return (not (symlink or binary) and "internal:merge" or None, None)
|
|
|
|
|
|
def _eoltype(data):
|
|
|
"Guess the EOL type of a file"
|
|
|
if '\0' in data: # binary
|
|
|
return None
|
|
|
if '\r\n' in data: # Windows
|
|
|
return '\r\n'
|
|
|
if '\r' in data: # Old Mac
|
|
|
return '\r'
|
|
|
if '\n' in data: # UNIX
|
|
|
return '\n'
|
|
|
return None # unknown
|
|
|
|
|
|
def _matcheol(file, origfile):
|
|
|
"Convert EOL markers in a file to match origfile"
|
|
|
tostyle = _eoltype(open(origfile, "rb").read())
|
|
|
if tostyle:
|
|
|
data = open(file, "rb").read()
|
|
|
style = _eoltype(data)
|
|
|
if style:
|
|
|
newdata = data.replace(style, tostyle)
|
|
|
if newdata != data:
|
|
|
open(file, "wb").write(newdata)
|
|
|
|
|
|
def filemerge(repo, mynode, orig, fcd, fco, fca):
|
|
|
"""perform a 3-way merge in the working directory
|
|
|
|
|
|
mynode = parent node before merge
|
|
|
orig = original local filename before merge
|
|
|
fco = other file context
|
|
|
fca = ancestor file context
|
|
|
fcd = local file context for current/destination file
|
|
|
"""
|
|
|
|
|
|
def temp(prefix, ctx):
|
|
|
pre = "%s~%s." % (os.path.basename(ctx.path()), prefix)
|
|
|
(fd, name) = tempfile.mkstemp(prefix=pre)
|
|
|
data = repo.wwritedata(ctx.path(), ctx.data())
|
|
|
f = os.fdopen(fd, "wb")
|
|
|
f.write(data)
|
|
|
f.close()
|
|
|
return name
|
|
|
|
|
|
def isbin(ctx):
|
|
|
try:
|
|
|
return util.binary(ctx.data())
|
|
|
except IOError:
|
|
|
return False
|
|
|
|
|
|
if not fco.cmp(fcd.data()): # files identical?
|
|
|
return None
|
|
|
|
|
|
ui = repo.ui
|
|
|
fd = fcd.path()
|
|
|
binary = isbin(fcd) or isbin(fco) or isbin(fca)
|
|
|
symlink = 'l' in fcd.flags() + fco.flags()
|
|
|
tool, toolpath = _picktool(repo, ui, fd, binary, symlink)
|
|
|
ui.debug(_("picked tool '%s' for %s (binary %s symlink %s)\n") %
|
|
|
(tool, fd, binary, symlink))
|
|
|
|
|
|
if not tool:
|
|
|
tool = "internal:local"
|
|
|
if ui.prompt(_(" no tool found to merge %s\n"
|
|
|
"keep (l)ocal or take (o)ther?") % fd,
|
|
|
(_("&Local"), _("&Other")), _("l")) != _("l"):
|
|
|
tool = "internal:other"
|
|
|
if tool == "internal:local":
|
|
|
return 0
|
|
|
if tool == "internal:other":
|
|
|
repo.wwrite(fd, fco.data(), fco.flags())
|
|
|
return 0
|
|
|
if tool == "internal:fail":
|
|
|
return 1
|
|
|
|
|
|
# do the actual merge
|
|
|
a = repo.wjoin(fd)
|
|
|
b = temp("base", fca)
|
|
|
c = temp("other", fco)
|
|
|
out = ""
|
|
|
back = a + ".orig"
|
|
|
util.copyfile(a, back)
|
|
|
|
|
|
if orig != fco.path():
|
|
|
ui.status(_("merging %s and %s to %s\n") % (orig, fco.path(), fd))
|
|
|
else:
|
|
|
ui.status(_("merging %s\n") % fd)
|
|
|
|
|
|
ui.debug(_("my %s other %s ancestor %s\n") % (fcd, fco, fca))
|
|
|
|
|
|
# do we attempt to simplemerge first?
|
|
|
if _toolbool(ui, tool, "premerge", not (binary or symlink)):
|
|
|
r = simplemerge.simplemerge(ui, a, b, c, quiet=True)
|
|
|
if not r:
|
|
|
ui.debug(_(" premerge successful\n"))
|
|
|
os.unlink(back)
|
|
|
os.unlink(b)
|
|
|
os.unlink(c)
|
|
|
return 0
|
|
|
util.copyfile(back, a) # restore from backup and try again
|
|
|
|
|
|
env = dict(HG_FILE=fd,
|
|
|
HG_MY_NODE=short(mynode),
|
|
|
HG_OTHER_NODE=str(fco.changectx()),
|
|
|
HG_MY_ISLINK='l' in fcd.flags(),
|
|
|
HG_OTHER_ISLINK='l' in fco.flags(),
|
|
|
HG_BASE_ISLINK='l' in fca.flags())
|
|
|
|
|
|
if tool == "internal:merge":
|
|
|
r = simplemerge.simplemerge(ui, a, b, c, label=['local', 'other'])
|
|
|
else:
|
|
|
args = _toolstr(ui, tool, "args", '$local $base $other')
|
|
|
if "$output" in args:
|
|
|
out, a = a, back # read input from backup, write to original
|
|
|
replace = dict(local=a, base=b, other=c, output=out)
|
|
|
args = re.sub("\$(local|base|other|output)",
|
|
|
lambda x: '"%s"' % replace[x.group()[1:]], args)
|
|
|
r = util.system(toolpath + ' ' + args, cwd=repo.root, environ=env)
|
|
|
|
|
|
if not r and _toolbool(ui, tool, "checkconflicts"):
|
|
|
if re.match("^(<<<<<<< .*|=======|>>>>>>> .*)$", fcd.data()):
|
|
|
r = 1
|
|
|
|
|
|
if not r and _toolbool(ui, tool, "checkchanged"):
|
|
|
if filecmp.cmp(repo.wjoin(fd), back):
|
|
|
if ui.prompt(_(" output file %s appears unchanged\n"
|
|
|
"was merge successful (yn)?") % fd,
|
|
|
(_("&Yes"), _("&No")), _("n")) != _("y"):
|
|
|
r = 1
|
|
|
|
|
|
if _toolbool(ui, tool, "fixeol"):
|
|
|
_matcheol(repo.wjoin(fd), back)
|
|
|
|
|
|
if r:
|
|
|
ui.warn(_("merging %s failed!\n") % fd)
|
|
|
else:
|
|
|
os.unlink(back)
|
|
|
|
|
|
os.unlink(b)
|
|
|
os.unlink(c)
|
|
|
return r
|
|
|
|
