#!/usr/bin/env python
#
# Minimal support for git commands on an hg repository
#
# Copyright 2005 Chris Mason <mason@suse.com>
#
# This software may be used and distributed according to the terms
# of the GNU General Public License, incorporated herein by reference.
import time, sys, signal, os
from mercurial import hg, mdiff, fancyopts, commands, ui, util
def dodiff(fp, ui, repo, node1, node2, files=None, match=util.always,
changes=None, text=False):
def date(c):
return time.asctime(time.gmtime(c[2][0]))
if not changes:
(c, a, d, u) = repo.changes(node1, node2, files, match=match)
else:
(c, a, d, u) = changes
if files:
c, a, d = map(lambda x: filterfiles(files, x), (c, a, d))
if not c and not a and not d:
return
if node2:
change = repo.changelog.read(node2)
mmap2 = repo.manifest.read(change[0])
date2 = date(change)
def read(f):
return repo.file(f).read(mmap2[f])
else:
date2 = time.asctime()
if not node1:
node1 = repo.dirstate.parents()[0]
def read(f):
return repo.wfile(f).read()
change = repo.changelog.read(node1)
mmap = repo.manifest.read(change[0])
date1 = date(change)
for f in c:
to = None
if f in mmap:
to = repo.file(f).read(mmap[f])
tn = read(f)
fp.write("diff --git a/%s b/%s\n" % (f, f))
fp.write(mdiff.unidiff(to, date1, tn, date2, f, None, text=text))
for f in a:
to = None
tn = read(f)
fp.write("diff --git /dev/null b/%s\n" % (f))
fp.write(mdiff.unidiff(to, date1, tn, date2, f, None, text=text))
for f in d:
to = repo.file(f).read(mmap[f])
tn = None
fp.write("diff --git a/%s /dev/null\n" % (f))
fp.write(mdiff.unidiff(to, date1, tn, date2, f, None, text=text))
def difftree(ui, repo, node1=None, node2=None, **opts):
"""diff trees from two commits"""
def __difftree(repo, node1, node2):
def date(c):
return time.asctime(time.gmtime(c[2][0]))
if node2:
change = repo.changelog.read(node2)
mmap2 = repo.manifest.read(change[0])
(c, a, d, u) = repo.changes(node1, node2)
def read(f): return repo.file(f).read(mmap2[f])
date2 = date(change)
else:
date2 = time.asctime()
(c, a, d, u) = repo.changes(node1, None)
if not node1:
node1 = repo.dirstate.parents()[0]
def read(f): return file(os.path.join(repo.root, f)).read()
change = repo.changelog.read(node1)
mmap = repo.manifest.read(change[0])
date1 = date(change)
empty = "0" * 40;
for f in c:
# TODO get file permissions
print ":100664 100664 %s %s M\t%s\t%s" % (hg.hex(mmap[f]),
hg.hex(mmap2[f]), f, f)
for f in a:
print ":000000 100664 %s %s N\t%s\t%s" % (empty, hg.hex(mmap2[f]), f, f)
for f in d:
print ":100664 000000 %s %s D\t%s\t%s" % (hg.hex(mmap[f]), empty, f, f)
##
while True:
if opts['stdin']:
try:
line = raw_input().split(' ')
node1 = line[0]
if len(line) > 1:
node2 = line[1]
else:
node2 = None
except EOFError:
break
node1 = repo.lookup(node1)
if node2:
node2 = repo.lookup(node2)
else:
node2 = node1
node1 = repo.changelog.parents(node1)[0]
if opts['patch']:
if opts['pretty']:
catcommit(repo, node2, "")
dodiff(sys.stdout, ui, repo, node1, node2)
else:
__difftree(repo, node1, node2)
if not opts['stdin']:
break
def catcommit(repo, n, prefix, changes=None):
nlprefix = '\n' + prefix;
(p1, p2) = repo.changelog.parents(n)
(h, h1, h2) = map(hg.hex, (n, p1, p2))
(i1, i2) = map(repo.changelog.rev, (p1, p2))
if not changes:
changes = repo.changelog.read(n)
print "tree %s" % (hg.hex(changes[0]))
if i1 != -1: print "parent %s" % (h1)
if i2 != -1: print "parent %s" % (h2)
date_ar = changes[2]
date = int(float(date_ar[0]))
lines = changes[4].splitlines()
if lines[-1].startswith('committer:'):
committer = lines[-1].split(': ')[1].rstrip()
else:
committer = "%s %s %s" % (changes[1], date, date_ar[1])
print "author %s %s %s" % (changes[1], date, date_ar[1])
print "committer %s" % (committer)
print ""
if prefix != "":
print "%s%s" % (prefix, changes[4].replace('\n', nlprefix).strip())
else:
print changes[4]
if prefix:
sys.stdout.write('\0')
def base(ui, repo, node1, node2):
"""Output common ancestor information"""
node1 = repo.lookup(node1)
node2 = repo.lookup(node2)
n = repo.changelog.ancestor(node1, node2)
print hg.hex(n)
def catfile(ui, repo, type=None, r=None, **opts):
"""cat a specific revision"""
# in stdin mode, every line except the commit is prefixed with two
# spaces. This way the our caller can find the commit without magic
# strings
#
prefix = ""
if opts['stdin']:
try:
(type, r) = raw_input().split(' ');
prefix = " "
except EOFError:
return
else:
if not type or not r:
ui.warn("cat-file: type or revision not supplied\n")
commands.help_(ui, 'cat-file')
while r:
if type != "commit":
sys.stderr.write("aborting hg cat-file only understands commits\n")
sys.exit(1);
n = repo.lookup(r)
catcommit(repo, n, prefix)
if opts['stdin']:
try:
(type, r) = raw_input().split(' ');
except EOFError:
break
else:
break
# git rev-tree is a confusing thing. You can supply a number of
# commit sha1s on the command line, and it walks the commit history
# telling you which commits are reachable from the supplied ones via
# a bitmask based on arg position.
# you can specify a commit to stop at by starting the sha1 with ^
def revtree(args, repo, full="tree", maxnr=0, parents=False):
def chlogwalk():
ch = repo.changelog
count = ch.count()
i = count
l = [0] * 100
chunk = 100
while True:
if chunk > i:
chunk = i
i = 0
else:
i -= chunk
for x in xrange(0, chunk):
if i + x >= count:
l[chunk - x:] = [0] * (chunk - x)
break
if full != None:
l[x] = ch.read(ch.node(i + x))
else:
l[x] = 1
for x in xrange(chunk-1, -1, -1):
if l[x] != 0:
yield (i + x, full != None and l[x] or None)
if i == 0:
break
# calculate and return the reachability bitmask for sha
def is_reachable(ar, reachable, sha):
if len(ar) == 0:
return 1
mask = 0
for i in range(len(ar)):
if sha in reachable[i]:
mask |= 1 << i
return mask
reachable = []
stop_sha1 = []
want_sha1 = []
count = 0
# figure out which commits they are asking for and which ones they
# want us to stop on
for i in range(len(args)):
if args[i].startswith('^'):
s = repo.lookup(args[i][1:])
stop_sha1.append(s)
want_sha1.append(s)
elif args[i] != 'HEAD':
want_sha1.append(repo.lookup(args[i]))
# calculate the graph for the supplied commits
for i in range(len(want_sha1)):
reachable.append({});
n = want_sha1[i];
visit = [n];
reachable[i][n] = 1
while visit:
n = visit.pop(0)
if n in stop_sha1:
continue
for p in repo.changelog.parents(n):
if p not in reachable[i]:
reachable[i][p] = 1
visit.append(p)
if p in stop_sha1:
continue
# walk the repository looking for commits that are in our
# reachability graph
#for i in range(repo.changelog.count()-1, -1, -1):
for i, changes in chlogwalk():
n = repo.changelog.node(i)
mask = is_reachable(want_sha1, reachable, n)
if mask:
parentstr = ""
if parents:
pp = repo.changelog.parents(n)
if pp[0] != hg.nullid:
parentstr += " " + hg.hex(pp[0])
if pp[1] != hg.nullid:
parentstr += " " + hg.hex(pp[1])
if not full:
print hg.hex(n) + parentstr
elif full is "commit":
print hg.hex(n) + parentstr
catcommit(repo, n, ' ', changes)
else:
(p1, p2) = repo.changelog.parents(n)
(h, h1, h2) = map(hg.hex, (n, p1, p2))
(i1, i2) = map(repo.changelog.rev, (p1, p2))
date = changes[2][0]
print "%s %s:%s" % (date, h, mask),
mask = is_reachable(want_sha1, reachable, p1)
if i1 != -1 and mask > 0:
print "%s:%s " % (h1, mask),
mask = is_reachable(want_sha1, reachable, p2)
if i2 != -1 and mask > 0:
print "%s:%s " % (h2, mask),
print ""
if maxnr and count >= maxnr:
break
count += 1
# git rev-list tries to order things by date, and has the ability to stop
# at a given commit without walking the whole repo. TODO add the stop
# parameter
def revlist(ui, repo, *revs, **opts):
"""print revisions"""
if opts['header']:
full = "commit"
else:
full = None
copy = [x for x in revs]
revtree(copy, repo, full, opts['max_count'], opts['parents'])
def view(ui, repo, *etc):
"start interactive history viewer"
os.chdir(repo.root)
os.system(ui.config("hgk", "path", "hgk") + " " + " ".join(etc))
cmdtable = {
"view": (view, [], 'hg view'),
"debug-diff-tree": (difftree, [('p', 'patch', None, 'generate patch'),
('r', 'recursive', None, 'recursive'),
('P', 'pretty', None, 'pretty'),
('s', 'stdin', None, 'stdin'),
('C', 'copy', None, 'detect copies'),
('S', 'search', "", 'search')],
"hg git-diff-tree [options] node1 node2"),
"debug-cat-file": (catfile, [('s', 'stdin', None, 'stdin')],
"hg debug-cat-file [options] type file"),
"debug-merge-base": (base, [], "hg debug-merge-base node node"),
"debug-rev-list": (revlist, [('H', 'header', None, 'header'),
('t', 'topo-order', None, 'topo-order'),
('p', 'parents', None, 'parents'),
('n', 'max-count', 0, 'max-count')],
"hg debug-rev-list [options] revs"),
}
def reposetup(ui, repo):
pass