| 1 | # This program is public domain |
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| 2 | # Author: Paul Kienzle |
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| 3 | r""" |
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| 4 | Allow $math$ markup in text and docstrings, ignoring \$. |
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| 5 | |
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| 6 | The $math$ markup should be separated from the surrounding text by spaces. To |
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| 7 | embed markup within a word, place backslash-space before and after. For |
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| 8 | convenience, the final $ can be followed by punctuation (period, comma or |
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| 9 | semicolon). |
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| 10 | """ |
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| 11 | |
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| 12 | import re |
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| 13 | |
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| 14 | _dollar = re.compile(r"(?:^|(?<=\s))[$]([^\n]*?)(?<![\\])[$](?:$|(?=\s|[.,;\\]))") |
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| 15 | _notdollar = re.compile(r"\\[$]") |
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| 16 | |
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| 17 | def replace_dollar(content): |
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| 18 | original = content |
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| 19 | content = _dollar.sub(r":math:`\1`",content) |
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| 20 | content = _notdollar.sub("$", content) |
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| 21 | #if '$' in content: |
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| 22 | # import sys |
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| 23 | # sys.stdout.write("\n========> not converted\n") |
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| 24 | # sys.stdout.write(content) |
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| 25 | # sys.stdout.write("\n") |
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| 26 | #elif '$' in original: |
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| 27 | # import sys |
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| 28 | # sys.stdout.write("\n========> converted\n") |
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| 29 | # sys.stdout.write(content) |
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| 30 | # sys.stdout.write("\n") |
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| 31 | return content |
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| 32 | |
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| 33 | def rewrite_rst(app, docname, source): |
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| 34 | source[0] = replace_dollar(source[0]) |
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| 35 | |
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| 36 | def rewrite_autodoc(app, what, name, obj, options, lines): |
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| 37 | lines[:] = [replace_dollar(L) for L in lines] |
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| 38 | |
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| 39 | def setup(app): |
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| 40 | app.connect('source-read', rewrite_rst) |
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| 41 | app.connect('autodoc-process-docstring', rewrite_autodoc) |
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| 42 | |
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| 43 | |
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| 44 | def test_dollar(): |
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| 45 | assert replace_dollar(u"no dollar")==u"no dollar" |
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| 46 | assert replace_dollar(u"$only$")==u":math:`only`" |
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| 47 | assert replace_dollar(u"$first$ is good")==u":math:`first` is good" |
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| 48 | assert replace_dollar(u"so is $last$")==u"so is :math:`last`" |
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| 49 | assert replace_dollar(u"and $mid$ too")==u"and :math:`mid` too" |
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| 50 | assert replace_dollar(u"$first$, $mid$, $last$")==u":math:`first`, :math:`mid`, :math:`last`" |
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| 51 | assert replace_dollar(u"dollar\$ escape")==u"dollar$ escape" |
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| 52 | assert replace_dollar(u"dollar \$escape\$ too")==u"dollar $escape$ too" |
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| 53 | assert replace_dollar(u"emb\ $ed$\ ed")==u"emb\ :math:`ed`\ ed" |
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| 54 | assert replace_dollar(u"$first$a")==u"$first$a" |
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| 55 | assert replace_dollar(u"a$last$")==u"a$last$" |
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| 56 | assert replace_dollar(u"a $mid$dle a")==u"a $mid$dle a" |
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| 57 | |
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| 58 | if __name__ == "__main__": |
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| 59 | test_dollar() |
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