gendoc: fall back to pure modules if C extensions are not available (issue1711)

doc/gendoc.py

@@ -1,112 +1,114 b''
-import sys, textwrap
+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.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()
         else:
             doc = gettext(doc)
         ui.write(doc)
         ui.write("\n")
 
 if __name__ == "__main__":
     show_doc(sys.stdout)