#!/usr/bin/env python

#

# mercurial - a minimal scalable distributed SCM

# v0.4f "jane dark"

#

# Copyright 2005 Matt Mackall <mpm@selenic.com>

#

# This software may be used and distributed according to the terms

# of the GNU General Public License, incorporated herein by reference.

# the psyco compiler makes commits a bit faster

# and makes changegroup merge about 20 times slower!

# try:

#    import psyco

#    psyco.full()

# except:

#    pass

import sys, os, time

from mercurial import hg, mdiff, fancyopts

def help():

    print """\

 commands:

 init                  create a new repository in this directory

 branch <path>         create a branch of <path> in this directory

 merge <path>          merge changes from <path> into local repository

 checkout [changeset]  checkout the latest or given changeset

 status                show new, missing, and changed files in working dir

 add [files...]        add the given files in the next commit

 remove [files...]     remove the given files in the next commit

 addremove             add all new files, delete all missing files

 commit                commit all changes to the repository

 history               show changeset history

 log <file>            show revision history of a single file

 dump <file> [rev]     dump the latest or given revision of a file

 dumpmanifest [rev]    dump the latest or given revision of the manifest

 diff [files...]       diff working directory (or selected files)

 tags                  show current changeset tags

"""

def filterfiles(list, files):

    l = [ x for x in list if x in files ]

    for f in files:

        if f[-1] != os.sep: f += os.sep

        l += [ x for x in list if x.startswith(f) ]

    return l

def diff(files = None, node1 = None, node2 = None):

    def date(c):

        return time.asctime(time.gmtime(float(c[2].split(' ')[0])))

    if node2:

        change = repo.changelog.read(node2)

        mmap2 = repo.manifest.read(change[0])

        (c, a, d) = repo.diffrevs(node1, node2)

        def read(f): return repo.file(f).read(mmap2[f])

        date2 = date(change)

    else:

        date2 = time.asctime()

        if not node1:

            node1 = repo.current

        (c, a, d) = repo.diffdir(repo.root, node1)

        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)

    if files:

        (c, a, d) = map(lambda x: filterfiles(x, files), (c, a, d))

    for f in c:

        to = repo.file(f).read(mmap[f])

        tn = read(f)

        sys.stdout.write(mdiff.unidiff(to, date1, tn, date2, f))

    for f in a:

        to = ""

        tn = read(f)

        sys.stdout.write(mdiff.unidiff(to, date1, tn, date2, f))

    for f in d:

        to = repo.file(f).read(mmap[f])

        tn = ""

        sys.stdout.write(mdiff.unidiff(to, date1, tn, date2, f))

options = {}

opts = [('v', 'verbose', None, 'verbose'),

        ('d', 'debug', None, 'debug')]

args = fancyopts.fancyopts(sys.argv[1:], opts, options,

                           'hg [options] <command> [command options] [files]')

try:

    cmd = args[0]

    args = args[1:]

except:

    cmd = ""

ui = hg.ui(options["verbose"], options["debug"])

if cmd == "init":

    repo = hg.repository(ui, ".", create=1)

    sys.exit(0)

elif cmd == "branch" or cmd == "clone":

    os.system("cp -al %s/.hg .hg" % args[0])

    sys.exit(0)

elif cmd == "help":

    help()

    sys.exit(0)

else:

    try:

        repo = hg.repository(ui=ui)

    except:

        print "Unable to open repository"

        sys.exit(0)

if cmd == "checkout" or cmd == "co":

    node = repo.changelog.tip()

    if args:

        node = repo.lookup(args[0])

    repo.checkout(node)

elif cmd == "add":

    repo.add(args)

elif cmd == "remove" or cmd == "rm" or cmd == "del" or cmd == "delete":

    repo.remove(args)

elif cmd == "commit" or cmd == "checkin" or cmd == "ci":

    if 1:

        if len(args) > 0:

            repo.commit(repo.current, args)

        else:

            repo.commit(repo.current)

elif cmd == "import" or cmd == "patch":

    ioptions = {}

    opts = [('p', 'strip', 1, 'path strip'),

            ('b', 'base', "", 'base path'),

            ('q', 'quiet', "", 'silence diff')

            ]

    args = fancyopts.fancyopts(args, opts, ioptions,

                              'hg import [options] <patch names>')

    d = ioptions["base"]

    strip = ioptions["strip"]

    quiet = ioptions["quiet"] and "> /dev/null" or ""

    for patch in args:

        ui.status("applying %s\n" % patch)

        pf = os.path.join(d, patch)

        text = ""

        for l in file(pf):

            text += l

        f = os.popen("lsdiff --strip %d %s" % (strip, pf))

        files = filter(None, map(lambda x: x.rstrip(), f.read().splitlines()))

        f.close()

        repo.commit(repo.current, files, text)

elif cmd == "status":

    (c, a, d) = repo.diffdir(repo.root, repo.current)

    for f in c: print "C", f

    for f in a: print "?", f

    for f in d: print "R", f

elif cmd == "diff":

    revs = []

    if args:

        doptions = {}

        opts = [('r', 'revision', [], 'revision')]

        args = fancyopts.fancyopts(args, opts, doptions,

                                   'hg diff [options] [files]')

        revs = map(lambda x: repo.lookup(x), doptions['revision'])

    if len(revs) > 2:

        print "too many revisions to diff"

        sys.exit(1)

    if os.getcwd() != repo.root:

        relpath = os.getcwd()[len(repo.root) + 1: ]

        if not args: args = [ relpath ]

        else: args = [ os.path.join(relpath, x) for x in args ]

    diff(args, *revs)

elif cmd == "export":

    node = repo.lookup(args[0])

    prev, other = repo.changelog.parents(node)

    change = repo.changelog.read(node)

    print "# HG changeset patch"

    print "# User %s" % change[1]

    print "# Node ID %s" % hg.hex(node)

    print "# Parent  %s" % hg.hex(prev)

    print

    if other != hg.nullid:

        print "# Parent  %s" % hg.hex(other)

    print change[4]

    diff(None, prev, node)

elif cmd == "debugchangegroup":

    newer = repo.newer(map(repo.lookup, args))

    for chunk in repo.changegroup(newer):

        sys.stdout.write(chunk)

elif cmd == "debugaddchangegroup":

    data = sys.stdin.read()

    repo.addchangegroup(data)

elif cmd == "addremove":

    (c, a, d) = repo.diffdir(repo.root, repo.current)

    repo.add(a)

    repo.remove(d)

elif cmd == "history":

    for i in range(repo.changelog.count()):

        n = repo.changelog.node(i)

        changes = repo.changelog.read(n)

        (p1, p2) = repo.changelog.parents(n)

        (h, h1, h2) = map(hg.hex, (n, p1, p2))

        (i1, i2) = map(repo.changelog.rev, (p1, p2))

        print "rev:      %4d:%s" % (i, h)

        print "parents:  %4d:%s" % (i1, h1)

        if i2: print "          %4d:%s" % (i2, h2)

        print "manifest: %4d:%s" % (repo.manifest.rev(changes[0]),

                                    hg.hex(changes[0]))

        print "user:", changes[1]

        print "date:", time.asctime(

            time.localtime(float(changes[2].split(' ')[0])))

        print "files:", " ".join(changes[3])

        print "description:"

        print changes[4]

elif cmd == "log":

    if args:

        r = repo.file(args[0])

        for i in range(r.count()):

            n = r.node(i)

            (p1, p2) = r.parents(n)

            (h, h1, h2) = map(hg.hex, (n, p1, p2))

            (i1, i2) = map(r.rev, (p1, p2))

            cr = r.linkrev(n)

            cn = hg.hex(repo.changelog.node(cr))

            print "rev:       %4d:%s" % (i, h)

            print "changeset: %4d:%s" % (cr, cn)

            print "parents:   %4d:%s" % (i1, h1)

            if i2: print "           %4d:%s" % (i2, h2)

    else:

        print "missing filename"

elif cmd == "dump":

    if args:

        r = repo.file(args[0])

        n = r.tip()

        if len(args) > 1: n = r.lookup(args[1])

        sys.stdout.write(r.read(n))

    else:

        print "missing filename"

elif cmd == "dumpmanifest":

    n = repo.manifest.tip()

    if len(args) > 0:

        n = repo.manifest.lookup(args[0])

    m = repo.manifest.read(n)

    files = m.keys()

    files.sort()

    for f in files:

        print hg.hex(m[f]), f

elif cmd == "debughash":

    f = repo.file(args[0])

    print f.encodepath(args[0])

elif cmd == "debugindex":

    r = hg.revlog(open, args[0], "")

    print "   rev    offset  length  base linkrev"+\

          " p1           p2           nodeid"

    for i in range(r.count()):

        e = r.index[i]

        print "% 6d % 9d % 7d % 5d % 7d %s.. %s.. %s.." % (

            i, e[0], e[1], e[2], e[3],

            hg.hex(e[4][:5]), hg.hex(e[5][:5]), hg.hex(e[6][:5]))

elif cmd == "merge":

    if args:

        other = hg.repository(ui, args[0])

        print "requesting changegroup"

        cg = repo.getchangegroup(other)

        repo.addchangegroup(cg)

    else:

        print "missing source repository"

elif cmd == "tags":

    repo.lookup(0) # prime the cache

    i = repo.tags.items()

    i.sort()

    for k, n in i:

        try:

            r = repo.changelog.rev(n)

        except KeyError:

            r = "?"

        print "%-30s %5d:%s" % (k, repo.changelog.rev(n), hg.hex(n))

elif cmd == "debugoldmerge":

    if args:

        other = hg.repository(ui, args[0])

        repo.merge(other)

    else:

        print "missing source repository"

elif cmd == "verify":

    filelinkrevs = {}

    filenodes = {}

    manifestchangeset = {}

    changesets = revisions = files = 0

    print "checking changesets"

    for i in range(repo.changelog.count()):

        changesets += 1

        n = repo.changelog.node(i)

        changes = repo.changelog.read(n)

        manifestchangeset[changes[0]] = n

        for f in changes[3]:

            revisions += 1

            filelinkrevs.setdefault(f, []).append(i)

    print "checking manifests"

    for i in range(repo.manifest.count()):

        n = repo.manifest.node(i)

        ca = repo.changelog.node(repo.manifest.linkrev(n))

        cc = manifestchangeset[n]

        if ca != cc:

            print "manifest %s points to %s, not %s" % \

                  (hg.hex(n), hg.hex(ca), hg.hex(cc))

        m = repo.manifest.read(n)

        for f, fn in m.items():

            filenodes.setdefault(f, {})[fn] = 1

    print "crosschecking files in changesets and manifests"