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| 1 | +#! /usr/bin/env python |
| 2 | + |
| 3 | +"""Convert a LaTeX .toc file to some PDFTeX magic to create that neat outline. |
| 4 | +
|
| 5 | +The output file has an extension of '.bkm' instead of '.out', since hyperref |
| 6 | +already uses that extension. Let's avoid clashing. |
| 7 | +""" |
| 8 | + |
| 9 | +import os |
| 10 | +import re |
| 11 | +import string |
| 12 | +import sys |
| 13 | + |
| 14 | + |
| 15 | +# Ench item in an entry is a tuple of: |
| 16 | +# |
| 17 | +# Section #, Title String, Page #, List of Sub-entries |
| 18 | + |
| 19 | +cline_re = r"""^ |
| 20 | +\\contentsline\ \{([a-z]*)} # type of section in $1 |
| 21 | +\{(?:\\numberline\ \{([0-9.A-Z]+)})? # section number |
| 22 | +(.*)} # title string |
| 23 | +\{(\d+)}$""" # page number |
| 24 | + |
| 25 | +cline_rx = re.compile(cline_re, re.VERBOSE) |
| 26 | + |
| 27 | +OUTER_TO_INNER = -1 |
| 28 | + |
| 29 | +_transition_map = { |
| 30 | + ('chapter', 'section'): OUTER_TO_INNER, |
| 31 | + ('section', 'subsection'): OUTER_TO_INNER, |
| 32 | + ('subsection', 'subsubsection'): OUTER_TO_INNER, |
| 33 | + ('subsubsection', 'subsection'): 1, |
| 34 | + ('subsection', 'section'): 1, |
| 35 | + ('section', 'chapter'): 1, |
| 36 | + ('subsection', 'chapter'): 2, |
| 37 | + ('subsubsection', 'section'): 2, |
| 38 | + ('subsubsection', 'chapter'): 3, |
| 39 | + } |
| 40 | + |
| 41 | +def parse_toc(fp): |
| 42 | + toc = top = [] |
| 43 | + stack = [toc] |
| 44 | + level = 'chapter' |
| 45 | + lineno = 0 |
| 46 | + while 1: |
| 47 | + line = fp.readline() |
| 48 | + if not line: |
| 49 | + break |
| 50 | + lineno = lineno + 1 |
| 51 | + m = cline_rx.match(line) |
| 52 | + if m: |
| 53 | + stype, snum, title, pageno = m.group(1, 2, 3, 4) |
| 54 | + title = clean_title(title) |
| 55 | + entry = (stype, snum, title, string.atoi(pageno), []) |
| 56 | + if stype == level: |
| 57 | + toc.append(entry) |
| 58 | + else: |
| 59 | + direction = _transition_map[(level, stype)] |
| 60 | + if direction == OUTER_TO_INNER: |
| 61 | + toc = toc[-1][-1] |
| 62 | + stack.insert(0, toc) |
| 63 | + toc.append(entry) |
| 64 | + else: |
| 65 | + for i in range(direction): |
| 66 | + del stack[0] |
| 67 | + toc = stack[0] |
| 68 | + toc.append(entry) |
| 69 | + level = stype |
| 70 | + else: |
| 71 | + sys.stderr.write("l.%s: " + line) |
| 72 | + return top |
| 73 | + |
| 74 | + |
| 75 | +hackscore_rx = re.compile(r"\\(hackscore|raisebox)\s*{[^}]*}") |
| 76 | +title_rx = re.compile(r"\\[a-zA-Z]+\s*") |
| 77 | +title_trans = string.maketrans("", "") |
| 78 | + |
| 79 | +def clean_title(title): |
| 80 | + title = hackscore_rx.sub("_", title) |
| 81 | + while 1: |
| 82 | + m = title_rx.search(title) |
| 83 | + if m: |
| 84 | + title = title[:m.start()] + title[m.end():] |
| 85 | + else: |
| 86 | + break |
| 87 | + return string.translate(title, title_trans, "{}") |
| 88 | + |
| 89 | + |
| 90 | +def write_toc(toc, fp): |
| 91 | + for entry in toc: |
| 92 | + write_toc_entry(entry, fp, 0) |
| 93 | + |
| 94 | +def write_toc_entry(entry, fp, layer): |
| 95 | + stype, snum, title, pageno, toc = entry |
| 96 | + s = "\\pdfoutline goto name{page.%d}" % pageno |
| 97 | + if toc: |
| 98 | + s = "%s count -%d" % (s, len(toc)) |
| 99 | + if snum: |
| 100 | + title = "%s %s" % (snum, title) |
| 101 | + s = "%s {%s}\n" % (s, title) |
| 102 | + fp.write(s) |
| 103 | + for entry in toc: |
| 104 | + write_toc_entry(entry, fp, layer + 1) |
| 105 | + |
| 106 | + |
| 107 | +def main(): |
| 108 | + base, ext = os.path.splitext(sys.argv[1]) |
| 109 | + ext = ext or ".toc" |
| 110 | + toc = parse_toc(open(base + ext)) |
| 111 | + write_toc(toc, open(base + ".bkm", "w")) |
| 112 | + |
| 113 | + |
| 114 | +if __name__ == "__main__": |
| 115 | + main() |
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