avr-libc/devtools/math2dox.in at main · ClangBuiltArduino/avr-libc · GitHub

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#!@PYTHON@
# -*- mode: python -*-

# @configure_input@

# Used by doc/api/Makefile[.am] since Doxygen messes up
# formulae in man pages.

from __future__ import print_function

import sys, re

# For each {{{ formula }}} line we generate 3 versions:
# \htmlonly, \latexonly and \manonly.
pat_math = re.compile(r"\s*{{{(.*)}}}(.*)")

repl_html = (("+/-", "&plusmn;"),
             ("-",   "&minus;"),
             ("*",   "&middot;"))

repl_tex = (("*",        r"\cdot "),
            ("&asymp;",  r"\approx "),
            ("&middot;", r"\cdot "),
            ("&deg;",    r"^\circ "),
            ("&pi;",     r"\pi "),
            ("+/-",      r"\pm "),
            ("log",      r"\log "),
            ("<i>",      r"\mathit{"),
            ("</i>",     "}"),
            ("<sup>",    "^{"),
            ("</sup>",   "}"),
            ("<sub>",    "_{"),
            ("</sub>",   "}"),
            ("&nbsp;",   " "))

repl_man = (("&asymp;",  "="),
            ("&middot;", " * "),
            ("&deg;",    " degree"),
            ("&nbsp;",   " "),
            ("&pi;",     " pi "),
            ("<i>",      ""),
            ("</i>",     ""),
            ("<sup>",    "^{"),
            ("</sup>",   "}"),
            ("<sub>",    "_{"),
            ("</sub>",   "}"),
            ("pi /",     "pi/"),
            ("{x}",      "x"),
            ("{2}",      "2"),
            ("  ",       " "))

def out (str):
    print (str)


for line in sys.stdin.readlines():
    m = pat_math.match (line.strip())
    if not m:
        print (line, end="")
        continue

    math = m.group(1)
    ende = m.group(2)

    m_html = math
    for (old,new) in repl_html:
        m_html = m_html.replace (old, new)

    m_tex = math
    for (old,new) in repl_tex:
        m_tex = m_tex.replace (old, new)

    m_man = math
    for (old,new) in repl_man:
        m_man = m_man.replace (old, new)

    out (r"\htmlonly");
    out (m_html + ende);
    out (r"\endhtmlonly");

    out (r"\latexonly");
    out (r"\begin{math} " + m_tex + r"\end{math} " + ende);
    out (r"\endlatexonly");

    out (r"\manonly");
    out (".EQ");
    out (m_man)
    out (".EN");
    if ende:
        out (ende);
    out (r"\endmanonly");