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#! /usr/bin/env python

"""Combine similar index entries into an entry and subentries.

For example:

\item {foobar} (in module flotz), 23

\item {foobar} (in module whackit), 4323

becomes

\item {foobar}

\subitem in module flotz, 23

\subitem in module whackit, 4323

Note that an item which matches the format of a collapsable item but which

isn't part of a group of similar items is not modified.

"""

__version__ = '$Revision$'

import re

import StringIO

import sys

def cmp_entries(e1, e2):

return cmp(e1[1].lower(), e2[1].lower()) or cmp(e1, e2)

def dump_entries(write, entries):

if len(entries) == 1:

write(" \\item %s (%s)%s\n" % entries[0])

return

write(" \item %s\n" % entries[0][0])

# now sort these in a case insensitive manner:

if len(entries) > 0:

entries.sort(cmp_entries)

for xxx, subitem, pages in entries:

write(" \subitem %s%s\n" % (subitem, pages))

breakable_re = re.compile(

r" \\item (.*) [(](.*)[)]((?:(?:, \d+)|(?:, \\[a-z]*\{\d+\}))+)")

def process(ifn, ofn=None):

if ifn == "-":

ifp = sys.stdin

else:

ifp = open(ifn)

if ofn is None:

ofn = ifn

ofp = StringIO.StringIO()

entries = []

match = breakable_re.match

write = ofp.write

while 1:

line = ifp.readline()

if not line:

break

m = match(line)

if m:

entry = m.group(1, 2, 3)

if entries and entries[-1][0] != entry[0]:

dump_entries(write, entries)

entries = []

entries.append(entry)

elif entries:

dump_entries(write, entries)

entries = []

write(line)

else:

write(line)

del write

del match

ifp.close()

data = ofp.getvalue()

ofp.close()

if ofn == "-":

ofp = sys.stdout

else:

ofp = open(ofn, "w")

ofp.write(data)

ofp.close()

def main():

import getopt

outfile = None

opts, args = getopt.getopt(sys.argv[1:], "o:")

for opt, val in opts:

if opt in ("-o", "--output"):

outfile = val

filename = args[0]

outfile = outfile or filename

process(filename, outfile)

if __name__ == "__main__":

main()

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