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
|
from pylatexenc import latexwalker, latex2text, macrospec
#
# Define macros, environments, specials for the *parser*
#
lw_context_db = latexwalker.get_default_latex_context_db()
lw_context_db.add_context_category(
'my-quotes',
prepend=True,
macros=[
macrospec.MacroSpec("putindblquotes", "{"),
macrospec.MacroSpec("putinquotes", "[[{"),
],
environments=[
macrospec.EnvironmentSpec("indblquotes", ""),
macrospec.EnvironmentSpec("inquotes", "[["),
],
specials=[
macrospec.SpecialsSpec("`"),
macrospec.SpecialsSpec("'"),
macrospec.SpecialsSpec("``"),
macrospec.SpecialsSpec("''"),
],
)
#
# Implement macros, environments, specials for the *conversion to text*
#
def _get_optional_arg(node, default, l2tobj):
"""Helper that returns the `node` converted to text, or `default`
if the node is `None` (e.g. an optional argument that was not
specified)"""
if node is None:
return default
return l2tobj.nodelist_to_text([node])
def put_in_quotes_macro_repl(n, l2tobj):
"""Get the text replacement for the macro
\putinquotes[open-quote][close-quote]{text}"""
if not n.nodeargd:
# n.nodeargd can be empty if e.g. \putinquotes was a single
# token passed as an argument to a macro,
# e.g. \newcommand\putinquotes...
return ''
open_q_s = _get_optional_arg(n.nodeargd.argnlist[0], '“', l2tobj)
close_q_s = _get_optional_arg(n.nodeargd.argnlist[1], '”', l2tobj)
return (open_q_s + l2tobj.nodelist_to_text([n.nodeargd.argnlist[2]])
+ close_q_s)
def in_quotes_env_repl(n, l2tobj):
"""Get the text replacement for the {inquotes} environment"""
open_q_s = _get_optional_arg(n.nodeargd.argnlist[0], '“', l2tobj)
close_q_s = _get_optional_arg(n.nodeargd.argnlist[1], '”', l2tobj)
return open_q_s + l2tobj.nodelist_to_text(n.nodelist) + close_q_s
l2t_context_db = latex2text.get_default_latex_context_db()
l2t_context_db.add_context_category(
'my-quotes',
prepend=True,
macros=[
latex2text.MacroTextSpec("putindblquotes",
simplify_repl=r'“%(1)s”'),
latex2text.MacroTextSpec("putinquotes",
simplify_repl=put_in_quotes_macro_repl),
],
environments=[
latex2text.EnvironmentTextSpec("indblquotes",
simplify_repl=r'“%(body)s”'),
latex2text.EnvironmentTextSpec("inquotes",
simplify_repl=in_quotes_env_repl),
],
specials=[
latex2text.SpecialsTextSpec('`', "‘"),
latex2text.SpecialsTextSpec("'", "’"),
latex2text.SpecialsTextSpec('``', "“"),
latex2text.SpecialsTextSpec("''", "”"),
],
)
#
# Here is an example usage:
#
def custom_latex_to_text( input_latex ):
# the latex parser instance with custom latex_context
lw_obj = latexwalker.LatexWalker(input_latex,
latex_context=lw_context_db)
# parse to node list
nodelist, pos, length = lw_obj.get_latex_nodes()
# initialize the converter to text with custom latex_context
l2t_obj = latex2text.LatexNodes2Text(latex_context=l2t_context_db)
# convert to text
return l2t_obj.nodelist_to_text( nodelist )
print(custom_latex_to_text(
r"""\begin{inquotes}[`][']Hello, world\end{inquotes}"""))
# ‘Hello, world’
print(custom_latex_to_text(r"""\putinquotes[``]['']{Hello, world}"""))
# “Hello, world”
print(custom_latex_to_text(r"""\putinquotes{Hello, world}"""))
# “Hello, world”
print(custom_latex_to_text(r"""\putinquotes[`][']{Hello, world}"""))
# ‘Hello, world’
|
