view doc/gendoc.py @ 7805:cf6ec23a1bb5

help: better explanation for some of the environment variables

In particular, the precedence for usernames is explained in more detail.
Thanks to timeless for pointing out the deficiencies here.

import sys, textwrap
# import from the live mercurial repo
sys.path.insert(0, "..")
from mercurial import demandimport; demandimport.enable()
from mercurial.commands import table, globalopts
from mercurial.i18n import gettext, _
from mercurial.help import helptable

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 = "    %s" % shortdesc
    return (shortdesc, desc)

def get_opts(opts):
    for shortopt, longopt, default, desc in opts:
        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):
    d = {}
    attr = table[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

    return d

def show_doc(ui):
    def bold(s, text=""):
        ui.write("%s\n%s\n%s\n" % (s, "="*len(s), text))
    def underlined(s, text=""):
        ui.write("%s\n%s\n%s\n" % (s, "-"*len(s), text))

    # print options
    underlined(_("OPTIONS"))
    for optstr, desc in get_opts(globalopts):
        ui.write("%s::\n    %s\n\n" % (optstr, desc))

    # print cmds
    underlined(_("COMMANDS"))
    h = {}
    for c, attr in table.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])
        # synopsis
        ui.write("[[%s]]\n" % d['cmd'])
        ui.write("%s::\n" % d['synopsis'].replace("hg ","", 1))
        # 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"))
            for optstr, desc in opt_output:
                if desc:
                    s = "%-*s  %s" % (opts_len, optstr, desc)
                else:
                    s = optstr
                s = textwrap.fill(s, initial_indent=4 * " ",
                                  subsequent_indent=(6 + opts_len) * " ")
                ui.write("%s\n" % s)
            ui.write("\n")
        # aliases
        if d['aliases']:
            ui.write(_("    aliases: %s\n\n") % " ".join(d['aliases']))

    # print topics
    for names, section, doc in helptable:
        underlined(gettext(section).upper())
        if callable(doc):
            doc = doc()
        ui.write(gettext(doc))
        ui.write("\n")

if __name__ == "__main__":
    show_doc(sys.stdout)