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Diffstat (limited to 'websdk/mercurial/filemerge.py')
| -rw-r--r--[l---------] | websdk/mercurial/filemerge.py | 272 |
1 files changed, 271 insertions, 1 deletions
diff --git a/websdk/mercurial/filemerge.py b/websdk/mercurial/filemerge.py index 9179d38..bff2158 120000..100644 --- a/websdk/mercurial/filemerge.py +++ b/websdk/mercurial/filemerge.py @@ -1 +1,271 @@ -/usr/share/pyshared/mercurial/filemerge.py
\ No newline at end of file +# 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 or any later version. + +from node import short +from i18n import _ +import util, simplemerge, match, error +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 _toollist(ui, tool, part, default=[]): + return ui.configlist("merge-tools", tool + "." + part, default) + +_internal = ['internal:' + s + for s in 'fail local other merge prompt dump'.split()] + +def _findtool(ui, tool): + if tool in _internal: + return tool + for kn in ("regkey", "regkeyalt"): + k = _toolstr(ui, tool, kn) + if not k: + continue + p = util.lookupreg(k, _toolstr(ui, tool, "regname")) + if p: + p = util.findexe(p + _toolstr(ui, tool, "regappend")) + if p: + return p + exe = _toolstr(ui, tool, "executable", tool) + return util.findexe(util.expandpath(exe)) + +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 + + # forcemerge comes from command line arguments, highest priority + force = ui.config('ui', 'forcemerge') + if force: + toolpath = _findtool(ui, force) + if toolpath: + return (force, '"' + toolpath + '"') + else: + # mimic HGMERGE if given tool not found + return (force, force) + + # HGMERGE takes next 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(util.readfile(origfile)) + if tostyle: + data = util.readfile(file) + style = _eoltype(data) + if style: + newdata = data.replace(style, tostyle) + if newdata != data: + util.writefile(file, 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): # 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 or tool == 'internal:prompt': + tool = "internal:local" + if ui.promptchoice(_(" no tool found to merge %s\n" + "keep (l)ocal or take (o)ther?") % fd, + (_("&Local"), _("&Other")), 0): + 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? + try: + premerge = _toolbool(ui, tool, "premerge", not (binary or symlink)) + except error.ConfigError: + premerge = _toolstr(ui, tool, "premerge").lower() + valid = 'keep'.split() + if premerge not in valid: + _valid = ', '.join(["'" + v + "'" for v in valid]) + raise error.ConfigError(_("%s.premerge not valid " + "('%s' is neither boolean nor %s)") % + (tool, premerge, _valid)) + + if premerge: + 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 + if premerge != 'keep': + 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_BASE_NODE=str(fca.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']) + elif tool == 'internal:dump': + a = repo.wjoin(fd) + util.copyfile(a, a + ".local") + repo.wwrite(fd + ".other", fco.data(), fco.flags()) + repo.wwrite(fd + ".base", fca.data(), fca.flags()) + return 1 # unresolved + 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 = util.interpolate(r'\$', replace, args, + lambda s: '"%s"' % util.localpath(s)) + r = util.system(toolpath + ' ' + args, cwd=repo.root, environ=env, + out=ui.fout) + + if not r and (_toolbool(ui, tool, "checkconflicts") or + 'conflicts' in _toollist(ui, tool, "check")): + if re.search("^(<<<<<<< .*|=======|>>>>>>> .*)$", fcd.data(), + re.MULTILINE): + r = 1 + + checked = False + if 'prompt' in _toollist(ui, tool, "check"): + checked = True + if ui.promptchoice(_("was merge of '%s' successful (yn)?") % fd, + (_("&Yes"), _("&No")), 1): + r = 1 + + if not r and not checked and (_toolbool(ui, tool, "checkchanged") or + 'changed' in _toollist(ui, tool, "check")): + if filecmp.cmp(repo.wjoin(fd), back): + if ui.promptchoice(_(" output file %s appears unchanged\n" + "was merge successful (yn)?") % fd, + (_("&Yes"), _("&No")), 1): + 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 |