view doc/gendoc.py @ 17598:b7302d65006c stable

largefiles: restore normal 'clone -u' and 'clone -U' functionality

Previously, tip would be checked out regardless of the -u or -U parameter.  I'm
not sure what the 'required for successful walkchangerevs' comment meant, but it
appears to reference code which has since moved to downloadlfiles() in
7d6a660ca151.  Perhaps it was to force caching when the -U parameter is given?
The price of this change is that -U --all-largefiles won't cache anything.  That
will be fixed next.

Note that X + Y in the 'X largefiles updated, n removed' and 'Y additional
largefiles cached' lines do not add up to the same values in these tests, but
all of the largefiles have been downloaded.  The reason being that several
largefiles have the same content (eb7338044 is pointed to by sub/large2, large3
and sub/large4).  In the 'clone -u 1' operation, this largefile is cached to
populate the working directory, even without --all-largefiles.  That means the
file isn't downloaded again and cached in the rev where large3 and sub/large4
both point to this file.  Downloading that one file in that one rev seems to be
counted twice with 'clone -u 0'.  (Maybe it is also being downloaded twice?)

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
from mercurial import util

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:
        if names[0] == "config":
            # The config help topic is included in the hgrc.5 man
            # page.
            continue
        for name in names:
            ui.write(".. _%s:\n" % name)
        ui.write("\n")
        section(ui, sec)
        if util.safehasattr(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():
    return extensions.enabled().keys() + extensions.disabled().keys()

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