# commands.py - command processing for mercurial

#

# 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.

import os, re, sys, signal

from demandload import *

demandload(globals(), "mdiff time hgweb traceback random signal errno")

class UnknownCommand(Exception): pass

def filterfiles(filters, files):

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

    for t in filters:

        l += [ x for x in files if x.startswith(t) ]

    return l

def relfilter(repo, files):

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

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

    return files

def relpath(repo, args):

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

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

    return args

def dodiff(ui, repo, path, 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()

        (c, a, d, u) = repo.diffdir(path, node1)

        if not node1:

            node1 = repo.dirstate.parents()[0]

        def read(f): return repo.wfile(f).read()

    if ui.quiet:

        r = None

    else:

        hexfunc = ui.verbose and hg.hex or hg.short

        r = [hexfunc(node) for node in [node1, node2] if node]

    change = repo.changelog.read(node1)

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

    date1 = date(change)

    if files:

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

    for f in c:

        to = None

        if f in mmap:

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

        tn = read(f)

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

    for f in a:

        to = None

        tn = read(f)

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

    for f in d:

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

        tn = None

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

def show_changeset(ui, repo, rev=0, changenode=None, filelog=None):

    """show a single changeset or file revision"""

    changelog = repo.changelog

    if filelog:

        log = filelog

        filerev = rev

        node = filenode = filelog.node(filerev)

        changerev = filelog.linkrev(filenode)

        changenode = changenode or changelog.node(changerev)

    else:

        log = changelog

        changerev = rev

        if changenode is None:

            changenode = changelog.node(changerev)

        elif not changerev:

            rev = changerev = changelog.rev(changenode)

        node = changenode

    if ui.quiet:

        ui.write("%d:%s\n" % (rev, hg.hex(node)))

        return

    changes = changelog.read(changenode)

    parents = [(log.rev(parent), hg.hex(parent))

               for parent in log.parents(node)

               if ui.debugflag or parent != hg.nullid]

    if not ui.debugflag and len(parents) == 1 and parents[0][0] == rev-1:

        parents = []

    if filelog:

        ui.write("revision:    %d:%s\n" % (filerev, hg.hex(filenode)))

        for parent in parents:

            ui.write("parent:      %d:%s\n" % parent)

        ui.status("changeset:   %d:%s\n" % (changerev, hg.hex(changenode)))

    else:

        ui.write("changeset:   %d:%s\n" % (changerev, hg.hex(changenode)))

        for tag in repo.nodetags(changenode):

            ui.status("tag:         %s\n" % tag)

        for parent in parents:

            ui.write("parent:      %d:%s\n" % parent)

        ui.note("manifest:    %d:%s\n" % (repo.manifest.rev(changes[0]),

                                          hg.hex(changes[0])))

    ui.status("user:        %s\n" % changes[1])

    ui.status("date:        %s\n" % time.asctime(

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

    ui.note("files:       %s\n" % " ".join(changes[3]))

    description = changes[4].strip()

    if description:

        if ui.verbose:

            ui.status("description:\n")

            ui.status(description)

            ui.status("\n")

        else:

            ui.status("summary:     %s\n" % description.splitlines()[0])

    ui.status("\n")

def help(ui, cmd=None):

    '''show help for a given command or all commands'''

    if cmd:

        try:

            i = find(cmd)

            ui.write("%s\n\n" % i[2])

            if i[1]:

                for s, l, d, c in i[1]:

                    opt=' '

                    if s: opt = opt + '-' + s + ' '

                    if l: opt = opt + '--' + l + ' '

                    if d: opt = opt + '(' + str(d) + ')'

                    ui.write(opt, "\n")

                    if c: ui.write('   %s\n' % c)

                ui.write("\n")

            ui.write(i[0].__doc__, "\n")

        except UnknownCommand:

            ui.warn("hg: unknown command %s\n" % cmd)

        sys.exit(0)

    else:

        ui.status('hg commands:\n\n')

        h = {}

        for e in table.values():

            f = e[0]

            if f.__name__.startswith("debug"): continue

            d = ""

            if f.__doc__:

                d = f.__doc__.splitlines(0)[0].rstrip()

            h[f.__name__] = d

        fns = h.keys()

        fns.sort()

        m = max(map(len, fns))

        for f in fns:

            ui.status(' %-*s   %s\n' % (m, f, h[f]))

# Commands start here, listed alphabetically

def add(ui, repo, file, *files):

    '''add the specified files on the next commit'''

    repo.add(relpath(repo, (file,) + files))

def addremove(ui, repo, *files):

    """add all new files, delete all missing files"""

    if files:

        files = relpath(repo, files)

        d = []

        u = []

        for f in files:

            p = repo.wjoin(f)

            s = repo.dirstate.state(f)

            isfile = os.path.isfile(p)

            if s != 'r' and not isfile:

                d.append(f)

            elif s not in 'nmai' and isfile:

                u.append(f)

    else:

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

    repo.add(u)

    repo.remove(d)

def annotate(u, repo, file, *files, **ops):

    """show changeset information per file line"""

    def getnode(rev):

        return hg.short(repo.changelog.node(rev))

    def getname(rev):

        try:

            return bcache[rev]

        except KeyError:

            cl = repo.changelog.read(repo.changelog.node(rev))

            name = cl[1]

            f = name.find('@')

            if f >= 0:

                name = name[:f]

            bcache[rev] = name

            return name

    bcache = {}

    opmap = [['user', getname], ['number', str], ['changeset', getnode]]

    if not ops['user'] and not ops['changeset']:

        ops['number'] = 1

    node = repo.dirstate.parents()[0]

    if ops['revision']:

        node = repo.changelog.lookup(ops['revision'])

    change = repo.changelog.read(node)

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

    maxuserlen = 0

    maxchangelen = 0

    for f in relpath(repo, (file,) + files):

        lines = repo.file(f).annotate(mmap[f])

        pieces = []

        for o, f in opmap:

            if ops[o]:

                l = [ f(n) for n,t in lines ]

                m = max(map(len, l))

                pieces.append([ "%*s" % (m, x) for x in l])

        for p,l in zip(zip(*pieces), lines):

            u.write(" ".join(p) + ": " + l[1])

def cat(ui, repo, file, rev = []):

    """output the latest or given revision of a file"""

    r = repo.file(relpath(repo, [file])[0])

    n = r.tip()

    if rev: n = r.lookup(rev)

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

def commit(ui, repo, *files, **opts):

    """commit the specified files or all outstanding changes"""

    text = opts['text']

    if not text and opts['logfile']:

        try: text = open(opts['logfile']).read()

        except IOError: pass

    if opts['addremove']:

        addremove(ui, repo, *files)

    repo.commit(relpath(repo, files), text, opts['user'], opts['date'])

def copy(ui, repo, source, dest):

    """mark a file as copied or renamed for the next commit"""

    return repo.copy(*relpath(repo, (source, dest)))

def debugaddchangegroup(ui, repo):

    data = sys.stdin.read()

    repo.addchangegroup(data)

def debugchangegroup(ui, repo, roots):

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

    for chunk in repo.changegroup(newer):

        sys.stdout.write(chunk)

def debugindex(ui, file):

    r = hg.revlog(hg.opener(""), file, "")

    print "   rev    offset  length   base linkrev"+\

          " p1           p2           nodeid"

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

        e = r.index[i]

        print "% 6d % 9d % 7d % 6d % 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]))

def debugindexdot(ui, file):

    r = hg.revlog(hg.opener(""), file, "")

    print "digraph G {"

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

        e = r.index[i]

        print "\t%d -> %d" % (r.rev(e[4]), i)

        if e[5] != hg.nullid:

            print "\t%d -> %d" % (r.rev(e[5]), i)

    print "}"

def diff(ui, repo, *files, **opts):

    """diff working directory (or selected files)"""

    revs = []

    if opts['rev']:

        revs = map(lambda x: repo.lookup(x), opts['rev'])

    if len(revs) > 2:

        self.ui.warn("too many revisions to diff\n")

        sys.exit(1)

    if files:

        files = relpath(repo, files)

    else:

        files = relpath(repo, [""])

    dodiff(ui, repo, os.getcwd(), files, *revs)

def export(ui, repo, changeset):

    """dump the changeset header and diffs for a revision"""

    node = repo.lookup(changeset)

    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].rstrip()

    print

    dodiff(ui, repo, "", None, prev, node)

def forget(ui, repo, file, *files):

    """don't add the specified files on the next commit"""

    repo.forget(relpath(repo, (file,) + files))

def heads(ui, repo):

    """show current repository heads"""

    for n in repo.changelog.heads():

        show_changeset(ui, repo, changenode=n)