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#! /usr/bin/env python
#  -*- Python -*-

"""usage: %(program)s [options] file...

Supported options:

    --address addr
    -a addr         Set the address text to include at the end of the generated
                    HTML; this should be used for contact information.
    --columns cols
    -c cols         Set the number of columns each index section should be
                    displayed in.  The default is 1.
    --help
    -h              Display this help message.
    --letters
    -l              Split the output into sections by letter.
    --output file
    -o file         Write output to 'file' instead of standard out.
    --iconserver is Use 'is' as the directory containing icons for the
                    navigation bar.  The default is 'icons'.
    --title str     Set the page title to 'str'.  The default is 'Global
                    Module Index'.
    --uplink url    Set the upward link URL.  The default is './'.
    --uptitle str   Set the upward link title.  The default is 'Python
                    Documentation Index'.
"""
import buildindex
import os
import re
import string
import support
import sys


class IndexOptions(support.Options):
    def __init__(self):
        support.Options.__init__(self)
        self.add_args("l", ["letters"])
        self.letters = 0

    def handle_option(self, opt, val):
        if opt in ("-l", "--letters"):
            self.letters = 1

    def usage(self):
        program = os.path.basename(sys.argv[0])
        print __doc__ % {"program": program}


_rx = re.compile(
    "<dt><a href='(module-.*\.html)#l2h-\d+'><tt class='module'>"
    "([a-zA-Z_][a-zA-Z0-9_.]*</tt>(\s*<em>"
    "\(<span class='platform'>.*</span>\)</em>)?)</a>")

def main():
    options = IndexOptions()
    options.variables["title"] = "Global Module Index"
    options.parse(sys.argv[1:])
    args = options.args
    if not args:
        args = ["-"]
    #
    # Collect the input data:
    #
    nodes = []
    seqno = 0
    has_plat_flag = 0
    for ifn in args:
        if ifn == "-":
            ifp = sys.stdin
            dirname = ''
        else:
            ifp = open(ifn)
            dirname = os.path.dirname(ifn)
        while 1:
            line = ifp.readline()
            if not line:
                break
            m = _rx.match(line)
            if m:
                # This line specifies a module!
                basename, modname = m.group(1, 2)
                has_plat_flag = has_plat_flag or m.group(3)
                linkfile = os.path.join(dirname, basename)
                nodes.append(buildindex.Node(
                    '<a href="%s">' % linkfile,
                    "<tt class=module>%s</tt>" % modname,
                    seqno))
                seqno = seqno + 1
        ifp.close()
    #
    # Generate all output:
    #
    num_nodes = len(nodes)
    # Here's the HTML generation:
    parts = [options.get_header(),
             buildindex.process_nodes(nodes, options.columns, options.letters),
             options.get_footer(),
             ]
    if has_plat_flag:
        parts.insert(1, PLAT_DISCUSS)
    html = string.join(parts, '')
    program = os.path.basename(sys.argv[0])
    fp = options.get_output_file()
    print >>fp, html.rstrip()
    if options.outputfile == "-":
        print >>sys.stderr, "%s: %d index nodes" % (program, num_nodes)
    else:
        print
        print "%s: %d index nodes" % (program, num_nodes)


PLAT_DISCUSS = """
<p> Some module names are followed by an annotation indicating what
platform they are available on.</p>

"""


if __name__ == "__main__":
    main()