# 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.

class UnknownCommand(Exception): pass

def filterfiles(filters, files):

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

    for t in filters:

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

        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 filterfiles(p, files)

    return files

def relpath(repo, args):

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

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

        return [ os.path.normpath(os.path.join(p, x)) for x in args ]

    return args

def dodiff(repo, 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(repo.root, node1)

        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)

    if files:

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

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])

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

        except UnknownCommand:

            ui.warn("unknown command %s" % 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):

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

    (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 branch(ui, path):

    '''branch from a local repository'''

    # this should eventually support remote repos

    os.system("cp -al %s/.hg .hg" % path)

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

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

    r = repo.file(file)

    n = r.tip()

    if rev: n = r.lookup(rev)

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

def commit(ui, repo, *files):

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

    repo.commit(relpath(repo, files))

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(open, 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(open, 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(repo, 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(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():

        i = repo.changelog.rev(n)

        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])))

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

        print "description:"

        print changes[4]

def history(ui, repo):

    """show the changelog 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])))

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

        print "description:"

        print changes[4]

def init(ui):

    """create a repository"""

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

def log(ui, repo, f):

    """show the revision history of a single file"""

    f = relpath(repo, [f])[0]

    r = repo.file(f)

    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)

        changes = repo.changelog.read(repo.changelog.node(cr))

        print "user: %s" % changes[1]

        print "date: %s" % time.asctime(

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

        print "description:"

        print changes[4].rstrip()

        print

def manifest(ui, repo, rev = []):

    """output the latest or given revision of the project manifest"""

    n = repo.manifest.tip()

    if rev:

        n = repo.manifest.lookup(rev)

    m = repo.manifest.read(n)

    files = m.keys()

    files.sort()

    for f in files:

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

def parents(ui, repo, node = None):

    '''show the parents of the current working dir'''

    if node:

        p = repo.changelog.parents(repo.lookup(hg.bin(node)))

    else:

        p = repo.dirstate.parents()

    for n in p:

        if n != hg.nullid:

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

def patch(ui, repo, patches, opts):

    """import an ordered set of patches"""

    try:

        import psyco

        psyco.full()

    except:

        pass

    d = opts["base"]

    strip = opts["strip"]

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

    for patch in patches:

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

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

        text = ""

        for l in file(pf):

            if l[:4] == "--- ": break

            text += l

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

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

        f.close()

        if files:

            if os.system("patch -p%d < %s %s" % (strip, pf, quiet)):

                raise "patch failed!"

        repo.commit(files, text)

def pull(ui, repo, source):

    """pull changes from the specified source"""

    paths = {}

    try:

        pf = os.path.expanduser("~/.hgpaths")

        for l in file(pf):

            name, path = l.split()

            paths[name] = path

    except IOError:

        pass

    if source in paths: source = paths[source]

    other = hg.repository(ui, source)

    cg = repo.getchangegroup(other)

    repo.addchangegroup(cg)

def rawcommit(ui, repo, files, rc):

    "raw commit interface"

    text = rc['text']

    if not text and rc['logfile']:

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

        except IOError: pass

    if not text and not rc['logfile']:

        print "missing commit text"

        return 1

    files = relpath(repo, files)

    if rc['files']:

        files += open(rc['files']).read().splitlines()

    repo.rawcommit(files, text, rc['user'], rc['date'], *rc['parent'])

def recover(ui, repo):

    """roll back an interrupted transaction"""

    repo.recover()

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

    """remove the specified files on the next commit"""

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

def serve(ui, repo, **opts):

    """export the repository via HTTP"""

    hgweb.server(repo.root, opts["name"], opts["templates"],

                 opts["address"], opts["port"])

def status(ui, repo):

    '''show changed files in the working directory

    C = changed

    A = added

    R = removed

    ? = not tracked'''

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

    (c, a, d, u) = map(lambda x: relfilter(repo, x), (c, a, d, u))

    for f in c: print "C", f

    for f in a: print "A", f

    for f in d: print "R", f

    for f in u: print "?", f

def tags(ui, repo):

    """list repository tags"""

    repo.lookup(0) # prime the cache

    i = repo.tags.items()

    n = []

    for e in i:

        try:

            l = repo.changelog.rev(e[1])

        except KeyError:

            l = -2

        n.append((l, e))

    n.sort()

    n.reverse()

    i = [ e[1] for e in n ]

    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))

def tip(ui, repo):

    """show the tip revision"""

    n = repo.changelog.tip()

    t = repo.changelog.rev(n)

    ui.status("%d:%s\n" % (t, hg.hex(n)))

def undo(ui, repo):

    """undo the last transaction"""

    repo.undo()

def update(ui, repo, node=None):

    '''update or merge working directory

    If there are no outstanding changes in the working directory and

    there is a linear relationship between the current version and the

    requested version, the result is the requested version.

    Otherwise the result is a merge between the contents of the

    current working directory and the requested version. Files that

    changed between either parent are marked as changed for the next

    commit and a commit must be performed before any further updates

    are allowed.

    '''

    node = node and repo.lookup(node) or repo.changelog.tip()

    repo.update(node)

def verify(ui, repo):

    """verify the integrity of the repository"""

    return repo.verify()

# Command options and aliases are listed here, alphabetically

table = {

    "add": (add, [], "hg add [files]"),

    "addremove": (addremove, [], "hg addremove"),

    "ann|annotate": (annotate,

                     [('r', 'revision', '', 'revision'),

                      ('u', 'user', None, 'show user'),

                      ('n', 'number', None, 'show revision number'),

                      ('c', 'changeset', None, 'show changeset')],

                     'hg annotate [-u] [-c] [-n] [-r id] [files]'),

    "branch|clone": (branch, [], 'hg branch [path]'),

    "cat|dump": (cat, [], 'hg cat <file> [rev]'),

    "commit|ci": (commit, [], 'hg commit [files]'),

    "debugaddchangegroup": (debugaddchangegroup, [], 'debugaddchangegroup'),

    "debugchangegroup": (debugchangegroup, [], 'debugchangegroup [roots]'),

    "debugindex": (debugindex, [], 'debugindex <file>'),

    "debugindexdot": (debugindexdot, [], 'debugindexdot <file>'),

    "diff": (diff, [('r', 'rev', [], 'revision')],

             'hg diff [-r A] [-r B] [files]'),

    "export": (export, [], "hg export <changeset>"),