doc/gendoc.py

Pager extension: switch it off if --debugger is set

The pager is preventing the debugger prompt and much of the
debugger output to be refreshed. Moreover the pager does not
make sense when debugging line by line (Thanks to Gilles Moris).

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 as _
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['synopsis'] = attr[2]
    d['cmd'] = cmds[0]
    d['aliases'] = cmd.split("|")[1:]
    d['desc'] = get_desc(attr[0].__doc__)
    d['opts'] = list(get_opts(attr[1]))
    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['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 t in helptable:
        l = t.split("|")
        section = l[-1]
        underlined(_(section).upper())
        doc = helptable[t]
        if callable(doc):
            doc = doc()
        ui.write(_(doc))
        ui.write("\n")

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