def __init__(self):
family = Regex(r'([^%s]|(\\[%s]))*' %
(family_punc, family_punc)) \
.setParseAction(self._family)
size = Regex(r"([0-9]+\.?[0-9]*|\.[0-9]+)") \
.setParseAction(self._size)
name = Regex(r'[a-z]+') \
.setParseAction(self._name)
value = Regex(r'([^%s]|(\\[%s]))*' %
(value_punc, value_punc)) \
.setParseAction(self._value)
families = (family + ZeroOrMore(Literal(',') + family)).setParseAction(
self._families)
point_sizes = (size + ZeroOrMore(Literal(',') + size)).setParseAction(
self._point_sizes)
property = ((name + Suppress(Literal('=')) + value +
ZeroOrMore(Suppress(Literal(',')) + value))
| name).setParseAction(self._property)
pattern = (Optional(families) + Optional(Literal('-') + point_sizes) +
ZeroOrMore(Literal(':') + property) + StringEnd())
self._parser = pattern
self.ParseException = ParseException
r'$dz/dt \/ = \/ \gamma xy^2 \/ + \/ \rm{s}(2\pi y+\phi)$',
r'$x^1 2$',
r'$\alpha_{i+1}^j \/ = \/ \rm{sin}(2\pi f_j t_i) e^{-5 t_i/\tau}$',
r'$\cal{R}\prod_{i=\alpha_{i+1}}^\infty a_i\rm{sin}(2 \pi f x_i)$',
r'$\bigodot \bigoplus \cal{R} a_i\rm{sin}(2 \pi f x_i)$',
r'$x_i$',
r'$5\/\angstrom\hspace{ 2.0 }\pi$',
r'$x+1$',
r'$i$',
r'$i^j$',
]
#~ w, h, fonts = math_parse_s_ft2font(s, 20, 72)
for s in stests:
try:
print s
print(expression + StringEnd()).parseString(s[1:-1])
except ParseException, pe:
print "*** ERROR ***", pe.msg
print s
print 'X' + (' ' * pe.loc) + '^'
# how far did we get?
print expression.parseString(s[1:-1])
print
#w, h, fonts = math_parse_s_ps(s, 20, 72)
if __name__ == '__main__':
Element.fonts = DummyFonts()
for i in range(5, 20):
s = '$10^{%02d}$' % i
print 'parsing', s