1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
|
# -*- coding: utf-8 -*-
"""
pygments.formatters.latex
~~~~~~~~~~~~~~~~~~~~~~~~~
Formatter for LaTeX fancyvrb output.
:copyright: 2006-2007 by Georg Brandl.
:license: BSD, see LICENSE for more details.
"""
import cStringIO
from pygments.formatter import Formatter
from pygments.token import Token
from pygments.util import get_bool_opt, get_int_opt
__all__ = ['LatexFormatter']
def escape_tex(text):
return text.replace('@', '\x00'). \
replace('[', '\x01'). \
replace(']', '\x02'). \
replace('\x00', '@at[]').\
replace('\x01', '@lb[]').\
replace('\x02', '@rb[]')
DOC_TEMPLATE = r'''
\documentclass{%(docclass)s}
\usepackage{fancyvrb}
\usepackage{color}
\usepackage[%(encoding)s]{inputenc}
%(preamble)s
%(styledefs)s
\begin{document}
\section*{%(title)s}
%(code)s
\end{document}
'''
class LatexFormatter(Formatter):
r"""
Format tokens as LaTeX code. This needs the `fancyvrb` and `color`
standard packages.
Without the `full` option, code is formatted as one ``Verbatim``
environment, like this:
.. sourcecode:: latex
\begin{Verbatim}[commandchars=@\[\]]
@Can[def ]@Cax[foo](bar):
@Can[pass]
\end{Verbatim}
The command sequences used here (``@Can`` etc.) are generated from the given
`style` and can be retrieved using the `get_style_defs` method.
With the `full` option, a complete LaTeX document is output, including
the command definitions in the preamble.
The `get_style_defs(arg='')` method of a `LatexFormatter` returns a string
containing ``\newcommand`` commands defining the commands used inside the
``Verbatim`` environments. If the argument `arg` is true,
``\renewcommand`` is used instead.
Additional options accepted:
`docclass`
If the `full` option is enabled, this is the document class to use
(default: ``'article'``).
`preamble`
If the `full` option is enabled, this can be further preamble commands,
e.g. ``\usepackage`` (default: ``''``).
`verboptions`
Additional options given to the Verbatim environment (see the *fancyvrb*
docs for possible values) (default: ``''``).
`commandprefix`
The LaTeX commands used to produce colored output are constructed
using this prefix and some letters (default: ``'C'``).
*New in Pygments 0.7.*
"""
name = 'LaTeX'
aliases = ['latex', 'tex']
filenames = ['*.tex']
def __init__(self, **options):
Formatter.__init__(self, **options)
self.docclass = options.get('docclass', 'article')
self.preamble = options.get('preamble', '')
self.linenos = get_bool_opt(options, 'linenos', False)
self.linenostart = abs(get_int_opt(options, 'linenostart', 1))
self.linenostep = abs(get_int_opt(options, 'linenostep', 1))
self.verboptions = options.get('verboptions', '')
self.nobackground = get_bool_opt(options, 'nobackground', False)
self.commandprefix = options.get('commandprefix', 'C')
self._create_stylecmds()
def _create_stylecmds(self):
t2c = self.ttype2cmd = {Token: ''}
c2d = self.cmd2def = {}
cp = self.commandprefix
letters = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
first = iter(letters)
second = iter(letters)
firstl = first.next()
def rgbcolor(col):
if col:
return ','.join(['%.2f' %(int(col[i] + col[i + 1], 16) / 255.0)
for i in (0, 2, 4)])
else:
return '1,1,1'
for ttype, ndef in self.style:
cmndef = '#1'
if ndef['bold']:
cmndef = r'\textbf{' + cmndef + '}'
if ndef['italic']:
cmndef = r'\textit{' + cmndef + '}'
if ndef['underline']:
cmndef = r'\underline{' + cmndef + '}'
if ndef['color']:
cmndef = r'\textcolor[rgb]{%s}{%s}' % (
rgbcolor(ndef['color']),
cmndef
)
if ndef['border']:
cmndef = r'\fcolorbox[rgb]{%s}{%s}{%s}' % (
rgbcolor(ndef['border']),
rgbcolor(ndef['bgcolor']),
cmndef
)
elif ndef['bgcolor']:
cmndef = r'\colorbox[rgb]{%s}{%s}' % (
rgbcolor(ndef['bgcolor']),
cmndef
)
if cmndef == '#1':
continue
try:
alias = cp + firstl + second.next()
except StopIteration:
firstl = first.next()
second = iter(letters)
alias = cp + firstl + second.next()
t2c[ttype] = alias
c2d[alias] = cmndef
def get_style_defs(self, arg=''):
"""
Return the \\newcommand sequences needed to define the commands
used to format text in the verbatim environment. If ``arg`` is
given and true, use \\renewcommand instead.
"""
nc = (arg and r'\renewcommand' or r'\newcommand')
return '%s\\at{@}\n%s\\lb{[}\n%s\\rb{]}\n' % (nc, nc, nc) + \
'\n'.join(['%s\\%s[1]{%s}' % (nc, alias, cmndef)
for alias, cmndef in self.cmd2def.iteritems()
if cmndef != '#1'])
def format(self, tokensource, outfile):
# TODO: add support for background colors
enc = self.encoding
if self.full:
realoutfile = outfile
outfile = cStringIO.StringIO()
outfile.write(r'\begin{Verbatim}[commandchars=@\[\]')
if self.linenos:
start, step = self.linenostart, self.linenostep
outfile.write(',numbers=left' +
(start and ',firstnumber=%d' % start or '') +
(step and ',stepnumber=%d' % step or ''))
if self.verboptions:
outfile.write(',' + self.verboptions)
outfile.write(']\n')
for ttype, value in tokensource:
if enc:
value = value.encode(enc)
value = escape_tex(value)
cmd = self.ttype2cmd.get(ttype)
while cmd is None:
ttype = ttype.parent
cmd = self.ttype2cmd.get(ttype)
if cmd:
spl = value.split('\n')
for line in spl[:-1]:
if line:
outfile.write("@%s[%s]" % (cmd, line))
outfile.write('\n')
if spl[-1]:
outfile.write("@%s[%s]" % (cmd, spl[-1]))
else:
outfile.write(value)
outfile.write('\n\\end{Verbatim}\n')
if self.full:
realoutfile.write(DOC_TEMPLATE %
dict(docclass = self.docclass,
preamble = self.preamble,
title = self.title,
encoding = self.encoding or 'latin1',
styledefs = self.get_style_defs(),
code = outfile.getvalue()))
|
