"""Convert a LaTeX .toc file to some PDFTeX magic to create that neat outline.
The output file has an extension of '.bkm' instead of '.out', since hyperref
already uses that extension.
"""
import getopt
import os
import re
import string
import sys
cline_re = r"""^
\\contentsline\ \{([a-z]*)} # type of section in $1
\{(?:\\numberline\ \{([0-9.A-Z]+)})? # section number
(.*)} # title string
\{(\d+)}$"""
cline_rx = re.compile(cline_re, re.VERBOSE)
OUTER_TO_INNER = -1
_transition_map = {
('chapter', 'section'): OUTER_TO_INNER,
('section', 'subsection'): OUTER_TO_INNER,
('subsection', 'subsubsection'): OUTER_TO_INNER,
('subsubsection', 'subsection'): 1,
('subsection', 'section'): 1,
('section', 'chapter'): 1,
('subsection', 'chapter'): 2,
('subsubsection', 'section'): 2,
('subsubsection', 'chapter'): 3,
}
INCLUDED_LEVELS = ("chapter", "section", "subsection", "subsubsection")
def parse_toc(fp, bigpart=None):
toc = top = []
stack = [toc]
level = bigpart or 'chapter'
lineno = 0
while 1:
line = fp.readline()
if not line:
break
lineno = lineno + 1
m = cline_rx.match(line)
if m:
stype, snum, title, pageno = m.group(1, 2, 3, 4)
title = clean_title(title)
entry = (stype, snum, title, string.atoi(pageno), [])
if stype == level:
toc.append(entry)
else:
if stype not in INCLUDED_LEVELS:
continue
direction = _transition_map[(level, stype)]
if direction == OUTER_TO_INNER:
toc = toc[-1][-1]
stack.insert(0, toc)
toc.append(entry)
else:
for i in range(direction):
del stack[0]
toc = stack[0]
toc.append(entry)
level = stype
else:
sys.stderr.write("l.%s: " + line)
return top
hackscore_rx = re.compile(r"\\hackscore\s*{[^}]*}")
raisebox_rx = re.compile(r"\\raisebox\s*{[^}]*}")
title_rx = re.compile(r"\\([a-zA-Z])+\s+")
title_trans = string.maketrans("", "")
def clean_title(title):
title = raisebox_rx.sub("", title)
title = hackscore_rx.sub(r"\\_", title)
pos = 0
while 1:
m = title_rx.search(title, pos)
if m:
start = m.start()
if title[start:start+15] != "\\textunderscore":
title = title[:start] + title[m.end():]
pos = start + 1
else:
break
title = string.translate(title, title_trans, "{}")
return title
def write_toc(toc, fp):
for entry in toc:
write_toc_entry(entry, fp, 0)
def write_toc_entry(entry, fp, layer):
stype, snum, title, pageno, toc = entry
s = "\\pdfoutline goto name{page%03d}" % pageno
if toc:
s = "%s count -%d" % (s, len(toc))
if snum:
title = "%s %s" % (snum, title)
s = "%s {%s}\n" % (s, title)
fp.write(s)
for entry in toc:
write_toc_entry(entry, fp, layer + 1)
def process(ifn, ofn, bigpart=None):
toc = parse_toc(open(ifn), bigpart)
write_toc(toc, open(ofn, "w"))
def main():
bigpart = None
opts, args = getopt.getopt(sys.argv[1:], "c:")
if opts:
bigpart = opts[0][1]
if not args:
usage()
sys.exit(2)
for filename in args:
base, ext = os.path.splitext(filename)
ext = ext or ".toc"
process(base + ext, base + ".bkm", bigpart)
if __name__ == "__main__":
main()