import os, sys, textwrap

# import from the live mercurial repo

sys.path.insert(0, "..")

# fall back to pure modules if required C extensions are not available

sys.path.append(os.path.join('..', 'mercurial', 'pure'))

from mercurial import demandimport; demandimport.enable()

from mercurial import encoding

from mercurial.commands import table, globalopts

from mercurial.i18n import _

from mercurial.help import helptable

from mercurial import extensions

def get_desc(docstr):

    if not docstr:

        return "", ""

    # sanitize

    docstr = docstr.strip("\n")

    docstr = docstr.rstrip()

    shortdesc = docstr.splitlines()[0].strip()

    i = docstr.find("\n")

    if i != -1:

        desc = docstr[i + 2:]

    else:

        desc = shortdesc

    desc = textwrap.dedent(desc)

    return (shortdesc, desc)

def get_opts(opts):

    for opt in opts:

        if len(opt) == 5:

            shortopt, longopt, default, desc, optlabel = opt

        else:

            shortopt, longopt, default, desc = opt

        allopts = []

        if shortopt:

            allopts.append("-%s" % shortopt)

        if longopt:

            allopts.append("--%s" % longopt)

        desc += default and _(" (default: %s)") % default or ""

        yield(", ".join(allopts), desc)

def get_cmd(cmd, cmdtable):

    d = {}

    attr = cmdtable[cmd]

    cmds = cmd.lstrip("^").split("|")

    d['cmd'] = cmds[0]

    d['aliases'] = cmd.split("|")[1:]

    d['desc'] = get_desc(attr[0].__doc__)

    d['opts'] = list(get_opts(attr[1]))

    s = 'hg ' + cmds[0]

    if len(attr) > 2:

        if not attr[2].startswith('hg'):

            s += ' ' + attr[2]

        else:

            s = attr[2]

    d['synopsis'] = s.strip()

    return d

def section(ui, s):

    ui.write("%s\n%s\n\n" % (s, "-" * encoding.colwidth(s)))

def subsection(ui, s):

    ui.write("%s\n%s\n\n" % (s, '"' * encoding.colwidth(s)))

def subsubsection(ui, s):

    ui.write("%s\n%s\n\n" % (s, "." * encoding.colwidth(s)))

def subsubsubsection(ui, s):

    ui.write("%s\n%s\n\n" % (s, "#" * encoding.colwidth(s)))

def show_doc(ui):

    # print options

    section(ui, _("Options"))

    for optstr, desc in get_opts(globalopts):

        ui.write("%s\n    %s\n\n" % (optstr, desc))

    # print cmds

    section(ui, _("Commands"))

    commandprinter(ui, table, subsection)

    # print topics

    for names, sec, doc in helptable:

        for name in names:

            ui.write(".. _%s:\n" % name)

        ui.write("\n")

        section(ui, sec)

        if hasattr(doc, '__call__'):

            doc = doc()

        ui.write(doc)

        ui.write("\n")

    section(ui, _("Extensions"))

    ui.write(_("This section contains help for extensions that are distributed "

               "together with Mercurial. Help for other extensions is available "

               "in the help system."))

    ui.write("\n\n"

             ".. contents::\n"

             "   :class: htmlonly\n"

             "   :local:\n"

             "   :depth: 1\n\n")

    for extensionname in sorted(allextensionnames()):

        mod = extensions.load(None, extensionname, None)

        subsection(ui, extensionname)

        ui.write("%s\n\n" % mod.__doc__)

        cmdtable = getattr(mod, 'cmdtable', None)

        if cmdtable:

            subsubsection(ui, _('Commands'))

            commandprinter(ui, cmdtable, subsubsubsection)

def commandprinter(ui, cmdtable, sectionfunc):

    h = {}

    for c, attr in cmdtable.items():

        f = c.split("|")[0]

        f = f.lstrip("^")

        h[f] = c

    cmds = h.keys()

    cmds.sort()

    for f in cmds:

        if f.startswith("debug"):

            continue

        d = get_cmd(h[f], cmdtable)

        sectionfunc(ui, d['cmd'])

        # synopsis

        ui.write("::\n\n")

        synopsislines = d['synopsis'].splitlines()

        for line in synopsislines:

            # some commands (such as rebase) have a multi-line

            # synopsis

            ui.write("   %s\n" % line)

        ui.write('\n')

        # description

        ui.write("%s\n\n" % d['desc'][1])

        # options

        opt_output = list(d['opts'])

        if opt_output:

            opts_len = max([len(line[0]) for line in opt_output])

            ui.write(_("options:\n\n"))

            for optstr, desc in opt_output:

                if desc:

                    s = "%-*s  %s" % (opts_len, optstr, desc)

                else:

                    s = optstr

                ui.write("%s\n" % s)

            ui.write("\n")

        # aliases

        if d['aliases']:

            ui.write(_("    aliases: %s\n\n") % " ".join(d['aliases']))

def allextensionnames():

    extensionnames = []

    extensionsdictionary = extensions.enabled()[0]

    extensionnames.extend(extensionsdictionary.keys())

    extensionsdictionary = extensions.disabled()[0]

    extensionnames.extend(extensionsdictionary.keys())

    return extensionnames

if __name__ == "__main__":

    show_doc(sys.stdout)