File:
[LON-CAPA] /
loncom /
interface /
entities.pm
Revision
1.19:
download - view:
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select for diffs
Thu Jul 23 10:53:03 2009 UTC (15 years, 1 month ago) by
foxr
Branches:
MAIN
CVS tags:
version_2_9_X,
version_2_9_99_0,
version_2_9_1,
version_2_9_0,
version_2_8_99_1,
version_2_8_99_0,
version_2_11_0_RC3,
version_2_11_0_RC2,
version_2_11_0_RC1,
version_2_10_X,
version_2_10_1,
version_2_10_0_RC2,
version_2_10_0_RC1,
version_2_10_0,
loncapaMITrelate_1,
language_hyphenation_merge,
language_hyphenation,
bz6209-base,
bz6209,
bz2851,
PRINT_INCOMPLETE_base,
PRINT_INCOMPLETE,
HEAD,
GCI_3,
GCI_2,
BZ4492-merge,
BZ4492-feature_horizontal_radioresponse
This merger with head should resolve BZ 5969, 5970, 5732 5927 .. various
problems with printing pages, as well as some missing/not quite right entity
handling in the arrows.
# The LearningOnline Network
# entity -> tex.
#
# $Id: entities.pm,v 1.19 2009/07/23 10:53:03 foxr Exp $
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# /home/httpd/html/adm/gpl.txt
# http://www.lon-capa.org/
#
#
package Apache::entities;
use strict;
=pod
=head1 TABLES ASCII code page
=over
=item (7-13)
Translation to empty strings
=item (32-126)
Translations to simple characters
=item (130-140)
Controls and Latin-1 supplement. Note that some entities that have
visible effect are not printing unicode characters. Specifically
‚- 
=item (145-156)
There's a gap here in my entity table
=item (159-255)
Another short gap
=item (295)
hbar entity number comes from the unicode character:
see e.g. http://www.unicode.org/charts/PDF/U0100.pdf
ISO also documents a 'planck' entity.
=item (338-376)
Latin extended-A HTML 4.01 entities
=item (402)
Latin extended B HTML 4.01 entities
=item (710 & 732)
Spacing modifier letters
=item (913-937)
Greek uppercase (skipss 930)
=item (945-982)
Greek lowercase
=item (8194-8364)
The general punctuation set
=item (8472-8501)
Letter like symbols
=item (8592-8669)
Arrows and then some (harpoons from Hon Kie).
=item (8704-8734)
Mathematical operators.
=item (8735-9830)
The items below require the isoent latex package which I can't find at least for FC5.
Temporarily commented out.
=back
=cut
my %entities = (
# Translation to empty strings:
7 => "",
9 => "",
10 => "",
13 => "",
# Translations to simple characters:
32 => " ",
33 => "!",
34 => '"',
'quot' => '"',
35 => '\\#',
36 => '\\$',
37 => '\%',
38 => '\&',
'amp' => '\&',
39 => '\'', # Apostrophe
40 => '(',
41 => ')',
42 => '*',
43 => '+',
44 => ',', # comma
45 => '-',
46 => '.',
47 => '/',
48 => '0',
49 => '1',
50 => '2',
51 => '3',
52 => '4',
53 => '5',
54 => '6',
55 => '7',
56 => '8',
57 => '9',
58 => ':',
59 => ';',
60 => '\ensuremath{<}',
'lt' => '\ensuremath{<}',
61 => '\ensuremath{=}',
62 => '\ensuremath{>}',
'gt' => '\ensuremath{>}',
63 => '?',
64 => '@',
65 => 'A',
66 => 'B',
67 => 'C',
68 => 'D',
69 => 'E',
70 => 'F',
71 => 'G',
72 => 'H',
73 => 'I',
74 => 'J',
75 => 'K',
76 => 'L',
77 => 'M',
78 => 'N',
79 => 'O',
80 => 'P',
81 => 'Q',
82 => 'R',
83 => 'S',
84 => 'T',
85 => 'U',
86 => 'V',
87 => 'W',
88 => 'X',
89 => 'Y',
90 => 'Z',
91 => '[',
92 => '\ensuremath{\setminus}', # \setminus is \ with special spacing.
93 => ']',
94 => '\ensuremath{\wedge}',
95 => '\underline{\makebox[2mm]{\strut}}', # Underline 2mm of space for _
96 => '`',
97 => 'a',
98 => 'b',
99 => 'c',
100 => 'd',
101 => 'e',
102 => 'f',
103 => 'g',
104 => 'h',
105 => 'i',
106 => 'j',
107 => 'k',
108 => 'l',
109 => 'm',
110 => 'n',
111 => 'o',
112 => 'p',
113 => 'q',
114 => 'r',
115 => 's',
116 => 't',
117 => 'u',
118 => 'v',
119 => 'w',
120 => 'x',
121 => 'y',
122 => 'z',
123 => '\{',
124 => '|',
125 => '\}',
126 => '\~',
# Controls and Latin-1 supplement.
130 => ',',
131 => '\ensuremath{f}',
132 => ',,', # Low double left quotes.
133 => '\ensuremath{\ldots}',
134 => '\ensuremath{\dagger}',
135 => '\ensuremath{\ddagger}',
136 => '\ensuremath{\wedge}',
137 => '\textperthousand ',
138 => '\v{S}',
139 => '\ensuremath{<}',
140 => '{\OE}',
# There's a gap here in my entity table
145 => '`',
146 => '\'',
147 => '``',
148 => '\'\'',
149 => '\ensuremath{\bullet}',
150 => '--',
151 => '---',
152 => '\ensuremath{\sim}',
153 => '\texttrademark',
154 => '\v{s}',
155 => '\ensuremath{>}',
156 => '\oe ',
# Another short gap:
159 => '\"Y',
160 => '~',
'nbsp' => '~',
161 => '\textexclamdown ',
'iexcl' => '\textexclamdown ',
162 => '\textcent ',
'cent' => '\textcent ',
163 => '\pounds ',
'pound' => '\pounds ',
164 => '\textcurrency ',
'curren' => '\textcurrency ',
165 => '\textyen ',
'yen' => '\textyen ',
166 => '\textbrokenbar ',
'brvbar' => '\textbrokenbar ',
167 => '\textsection ',
'sect' => '\textsection ',
168 => '\"{}',
'uml' => '\"{}',
169 => '\copyright ',
'copy' => '\copyright ',
170 => '\textordfeminine ',
'ordf' => '\textordfeminine ',
171 => '\ensuremath{\ll}', # approximation of left angle quote.
'laquo' => '\ensuremath{\ll}', # ""
172 => '\ensuremath{\neg}',
'not' => '\ensuremath{\neg}',
173 => ' - ',
'shy' => ' - ',
174 => '\textregistered ',
'reg' => '\textregistered ',
175 => '\ensuremath{^{-}}',
'macr' => '\ensuremath{^{-}}',
176 => '\ensuremath{^{\circ}}',
'deg' => '\ensuremath{^{\circ}}',
177 => '\ensuremath{\pm}',
'plusmn' => '\ensuremath{\pm}',
178 => '\ensuremath{^2}',
'sup2' => '\ensuremath{^2}',
179 => '\ensuremath{^3}',
'sup3' => '\ensuremath{^3}',
180 => "\\'{}",
'acute' => "\\'{}",
181 => '\ensuremath{\mu}',
'micro' => '\ensuremath{\mu}',
182 => '\P ',
para => '\P ',
183 => '\ensuremath{\cdot}',
'middot' => '\ensuremath{\cdot}',
184 => '\c{\strut}',
'cedil' => '\c{\strut}',
185 => '\ensuremath{^1}',
sup1 => '\ensuremath{^1}',
186 => '\textordmasculine ',
'ordm' => '\textordmasculine ',
187 => '\ensuremath{\gg}',
'raquo' => '\ensuremath{\gg}',
188 => '\textonequarter ',
'frac14' => '\textonequarter ',
189 => '\textonehalf' ,
'frac12' => '\textonehalf' ,
190 => '\textthreequarters ',
'frac34' => '\textthreequarters ',
191 => '\textquestiondown ',
'iquest' => '\textquestiondown ',
192 => '\\`{A}',
'Agrave' => '\\`{A}',
193 => "\\'{A}",
'Aacute' => "\\'{A}",
194 => '\^{A}',
'Acirc' => '\^{A}',
195 => '\~{A}',
'Atilde'=> '\~{A}',
196 => '\\"{A}',
'Auml' => '\\"{A}',
197 => '{\AA}',
'Aring' => '{\AA}',
198 => '{\AE}',
'AElig' => '{\AE}',
199 => '\c{c}',
'Ccedil'=> '\c{c}',
200 => '\\`{E}',
'Egrave'=> '\\`{E}',
201 => "\\'{E}",
'Eacute'=> "\\'{E}",
202 => '\\^{E}',
'Ecirc' => '\\^{E}',
203 => '\\"{E}',
'Euml' => '\\"{E}',
204 => '\\`{I}',
'Igrave'=> '\\`{I}',
205 => "\\'{I}",
'Iacute'=> "\\'{I}",
206 => '\\^{I}',
'Icirc' => '\\^{I}',
207 => '\\"{I}',
'Iuml' => '\\"{I}',
208 => '\DH',
'ETH' => '\DH',
209 => '\~{N}',
'Ntilde'=> '\~{N}',
210 => '\\`{O}',
'Ograve'=> '\\`{O}',
211 => "\\'{O}",
'Oacute'=> "\\'{O}",
212 => '\\^{O}',
'Ocirc' => '\\^{O}',
213 => '\~{O}',
'Otilde'=> '\~{O}',
214 => '\\"{O}',
'Ouml' => '\\"{O}',
215 => '\ensuremath{\times}',
'times' => '\ensuremath{\times}',
216 => '\O',
'Oslash'=> '\O',
217 => '\\`{U}',
'Ugrave'=> '\\`{U}',
218 => "\\'{U}",
'Uacute'=> "\\'{U}",
219 => '\\^{U}',
'Ucirc' => '\\^{U}',
220 => '\\"{U}',
'Uuml' => '\\"{U}',
221 => "\\'{Y}",
'Yacute'=> "\\'{Y}",
223 => '{\ss}',
'szlig' => '{\ss}',
224 => '\\`{a}',
'agrave'=> '\\`{a}',
225 => "\\'{a}",
'aacute'=> "\\'{a}",
226 => '\\^{a}',
'acirc' => '\\^{a}',
227 => '\\~{a}',
'atilde'=> '\\~{a}',
228 => '\\"{a}',
'auml' => '\\"{a}',
229 => '\aa',
'aring' => '\aa',
230 => '\ae',
'aelig' => '\ae',
231 => '\c{c}',
'ccedil'=> '\c{c}',
232 => '\\`{e}',
'egrave'=> '\\`{e}',
233 => "\\'{e}",
'eacute'=> "\\'{e}",
234 => '\\^{e}',
'ecirc' => '\\^{e}',
235 => '\\"{e}',
'euml' => '\\"{e}',
236 => '\\`{i}',
'igrave'=> '\\`{i}',
237 => "\\'{i}",
'iacute'=> "\\'{i}",
238 => '\\^{i}',
'icirc' => '\\^{i}',
239 => '\\"{i}',
'iuml' => '\\"{i}',
241 => '\\~{n}',
'ntilde'=> '\\~{n}',
242 => '\\`{o}',
'ograve'=> '\\`{o}',
243 => "\\'{o}",
'oacute'=> "\\'{o}",
244 => '\\^{o}',
'ocirc' => '\\^{o}',
245 => '\\~{o}',
'otilde'=> '\\~{o}',
246 => '\\"{o}',
'ouml' => '\\"{o}',
247 => '\ensuremath{\div}',
'divide'=> '\ensuremath{\div}',
248 => '{\o}',
'oslash'=> '{\o}',
249 => '\\`{u}',
'ugrave'=> '\\`{u}',
250 => "\\'{u}",
'uacute'=> "\\'{u}",
251 => '\\^{u}',
'ucirc' => '\\^{u}',
252 => '\\"{u}',
'uuml' => '\\"{u}',
253 => "\\'{y}",
'yacute'=> "\\'{y}",
255 => '\\"{y}',
'yuml' => '\\"{y}',
# hbar entity number comes from the unicode character:
295 => '\ensuremath{\hbar}',
'planck' => '\ensuremath{\hbar}',
# Latin extended-A HTML 4.01 entities:
338 => '\OE',
'OElig' => '\OE',
339 => '\oe',
'oelig' => '\oe',
352 => '\v{S}',
'Scaron' => '\v{S}',
353 => '\v{s}',
'scaron' => '\v{s}',
376 => '\\"{Y}',
'Yuml' => '\\"{Y}',
# Latin extended B HTML 4.01 entities
402 => '\ensuremath{f}',
'fnof' => '\ensuremath{f}',
# Spacing modifier letters:
710 => '\^{}',
'circ' => '\^{}',
732 => '\~{}',
'tilde' => '\~{}',
# Greek uppercase:
913 => '\ensuremath{\mathrm{A}}',
'Alpha' => '\ensuremath{\mathrm{A}}',
914 => '\ensuremath{\mathrm{B}}',
'Beta' => '\ensuremath{\mathrm{B}}',
915 => '\ensuremath{\Gamma}',
'Gamma' => '\ensuremath{\Gamma}',
916 => '\ensuremath{\Delta}',
'Delta' => '\ensuremath{\Delta}',
917 => '\ensuremath{\mathrm{E}}',
'Epsilon'=> '\ensuremath{\mathrm{E}}',
918 => '\ensuremath{\mathrm{Z}}',
'Zeta' => '\ensuremath{\mathrm{Z}}',
919 => '\ensuremath{\mathrm{H}}',
'Eta' => '\ensuremath{\mathrm{H}}',
920 => '\ensuremath{\Theta}',
'Theta' => '\ensuremath{\Theta}',
921 => '\ensuremath{\mathrm{I}}',
'Iota' => '\ensuremath{\mathrm{I}}',
922 => '\ensuremath{\mathrm{K}}',
'Kappa' => '\ensuremath{\mathrm{K}}',
923 => '\ensuremath{\Lambda}',
'Lambda' => '\ensuremath{\Lambda}',
924 => '\ensuremath{\mathrm{M}}',
'Mu' => '\ensuremath{\mathrm{M}}',
925 => '\ensuremath{\mathrm{N}}',
'Nu' => '\ensuremath{\mathrm{N}}',
926 => '\ensuremath{\mathrm{\Xi}}',
'Xi' => '\ensuremath{\mathrm{\Xi}}',
927 => '\ensuremath{\mathrm{O}}',
'Omicron'=> '\ensuremath{\mathrm{O}}',
928 => '\ensuremath{\Pi}',
'Pi' => '\ensuremath{\Pi}',
929 => '\ensuremath{\mathrm{P}}',
'Rho' => '\ensuremath{\mathrm{P}}',
931 => '\ensuremath{\Sigma}',
'Sigma' => '\ensuremath{\Sigma}',
932 => '\ensuremath{\mathrm{T}}',
'Tau' => '\ensuremath{\mathrm{T}}',
933 => '\ensuremath{\Upsilon}',
'Upsilon'=> '\ensuremath{\Upsilon}',
934 => '\ensuremath{\Phi}',
'Phi' => '\ensuremath{\Phi}',
935 => '\ensuremath{\mathrm{X}}',
'Chi' => '\ensuremath{\mathrm{X}}',
936 => '\ensuremath{\Psi}',
'Psi' => '\ensuremath{\Psi}',
937 => '\ensuremath{\Omega}',
'Omega' => '\ensuremath{\Omega}',
# Greek lowercase:
945 => '\ensuremath{\alpha}',
'alpha' => '\ensuremath{\alpha}',
946 => '\ensuremath{\beta}',
'beta' => '\ensuremath{\beta}',
947 => '\ensuremath{\gamma}',
'gamma' => '\ensuremath{\gamma}',
948 => '\ensuremath{\delta}',
'delta' => '\ensuremath{\delta}',
949 => '\ensuremath{\epsilon}',
'epsilon'=> '\ensuremath{\epsilon}',
950 => '\ensuremath{\zeta}',
'zeta' => '\ensuremath{\zeta}',
951 => '\ensuremath{\eta}',
'eta' => '\ensuremath{\eta}',
952 => '\ensuremath{\theta}',
'theta' => '\ensuremath{\theta}',
953 => '\ensuremath{\iota}',
'iota' => '\ensuremath{\iota}',
954 => '\ensuremath{\kappa}',
'kappa' => '\ensuremath{\kappa}',
955 => '\ensuremath{\lambda}',
'lambda' => '\ensuremath{\lambda}',
956 => '\ensuremath{\mu}',
'mu' => '\ensuremath{\mu}',
957 => '\ensuremath{\nu}',
'nu' => '\ensuremath{\nu}',
958 => '\ensuremath{\xi}',
'xi' => '\ensuremath{\xi}',
959 => '\ensuremath{o}',
'omicron'=> '\ensuremath{o}',
960 => '\ensuremath{\pi}',
'pi' => '\ensuremath{\pi}',
961 => '\ensuremath{\rho}',
'rho' => '\ensuremath{\rho}',
962 => '\ensuremath{\varsigma}',
'sigmaf' => '\ensuremath{\varsigma}',
963 => '\ensuremath{\sigma}',
'sigma' => '\ensuremath{\sigma}',
964 => '\ensuremath{\tau}',
'tau' => '\ensuremath{\tau}',
965 => '\ensuremath{\upsilon}',
'upsilon'=> '\ensuremath{\upsilon}',
966 => '\ensuremath{\phi}',
'phi' => '\ensuremath{\phi}',
967 => '\ensuremath{\chi}',
'chi' => '\ensuremath{\chi}',
968 => '\ensuremath{\psi}',
'psi' => '\ensuremath{\psi}',
969 => '\ensuremath{\omega}',
'omega' => '\ensuremath{\omega}',
977 => '\ensuremath{\vartheta}',
'thetasym'=>'\ensuremath{\vartheta}',
978 => '\ensuremath{\mathit{\Upsilon}}',
'upsih' => '\ensuremath{\mathit{\Upsilon}}',
982 => '\ensuremath{\varpi}',
'piv' => '\ensuremath{\varpi}',
# The general punctuation set:
8194, => '\hspace{.5em}',
'enspc' => '\hspace{.5em}',
8195 => '\hspace{1.0em}',
'emspc' => '\hspace{1.0em}',
8201 => '\hspace{0.167em}',
'thinsp' => '\hspace{0.167em}',
8204 => '{}',
'zwnj' => '{}',
8205 => '',
'zwj' => '',
8206 => '',
'lrm' => '',
8207 => '',
'rlm' => '',
8211 => '--',
'ndash' => '--',
8212 => '---',
'mdash' => '---',
8216 => '`',
'lsquo' => '`',
8217 => "'",
'rsquo' => "'",
8218 => '\quotesinglbase',
'sbquo' => '\quotesinglbase',
8220 => '``',
'ldquo' => '``',
8221 => "''",
'rdquo' => "''",
8222 => '\quotedblbase',
'bdquo' => '\quotedblbase',
8224 => '\ensuremath{\dagger}',
'dagger' => '\ensuremath{\dagger}',
'8225' => '\ensuremath{\ddag}',
'Dagger' => '\ensuremath{\ddag}',
8226 => '\textbullet',
'bull' => '\textbullet',
8230 => '\textellipsis',
'hellep' => '\textellipsis',
8240 => '\textperthousand',
permil => '\textperthousand',
8242 => '\textquotesingle',
'prime' => '\textquotesingle',
8243 => '\textquotedbl',
'Prime' => '\textquotedbl',
8249 => '\guilsinglleft',
'lsaquo' => '\guilsinglleft',
8250 => '\guilsinglright',
'rsaquo' => '\guilsinglright',
8254 => '\textasciimacron',
oline => '\textasciimacron',
8260 => '\textfractionsolidus',
'frasl' => '\textfractionsolidus',
8364 => '\texteuro',
'euro' => '\texteuro',
# Letter like symbols
8472 => '\ensuremath{\wp}',
'weierp' => '\ensuremath{\wp}',
8465 => '\ensuremath{\Im}',
'image' => '\ensuremath{\Im}',
8476 => '\ensuremath{\Re}',
'real' => '\ensuremath{\Re}',
8482 => '\texttrademark',
'trade' => '\texttrademark',
8501 => '\ensuremath{\aleph}',
'alefsym'=> '\ensuremath{\aleph}',
# Arrows and then some (harpoons from Hon Kie).
8592 => '\ensuremath{\leftarrow}',
'larr' => '\ensuremath{\leftarrow}',
8593 => '\ensuremath{\uparrow}',
'uarr' => '\ensuremath{\uparrow}',
8594 => '\ensuremath{\rightarrow}',
'rarr' => '\ensuremath{\rightarrow}',
8595 => '\ensuremath{\downarrow}',
'darr' => '\ensuremath{\downarrow}',
8596 => '\ensuremath{\leftrightarrow}',
'harr' => '\ensuremath{\leftrightarrow}',
8598 => '\ensuremath{\nwarrow}',
8599 => '\ensuremath{\nearrow}',
8600 => '\ensuremath{\searrow}',
8601 => '\ensuremath{\swarrow}',
8605 => '\ensuremath{\leadsto}',
8614 => '\ensuremath{\mapsto}',
8617 => '\ensuremath{\hookleftarrow}',
8618 => '\ensuremath{\hookrightarrow}',
8629 => '\ensuremath{\hookleftarrow}', # not an exact match but best I know.
'crarr' => '\ensuremath{\hookleftarrow}', # not an exact match but best I know.
8636 => '\ensuremath{\leftharpoonup}',
8637 => '\ensuremath{\leftharpoondown}',
8640 => '\ensuremath{\rightharpoonup}',
8641 => '\ensuremath{\rightharpoondown}',
8652 => '\ensuremath{\rightleftharpoons}',
8656 => '\ensuremath{\Leftarrow}',
'lArr' => '\ensuremath{\Leftarrow}',
8657 => '\ensuremath{\Uparrow}',
'uArr' => '\ensuremath{\Uparrow}',
8658 => '\ensuremath{\Rightarrow}',
'rArr' => '\ensuremath{\Rightarrow}',
8659 => '\ensuremath{\Downarrow}',
'dArr' => '\ensuremath{\Downarrow}',
8660 => '\ensuremath{\Leftrightarrow}',
'hArr' => '\ensuremath{\Leftrightarrow}',
8661 => '\ensuremath{\Updownarrow}',
'vArr' => '\ensuremath{\Updownarrow}',
8666 => '\ensuremath{\Lleftarrow}',
'lAarr' => '\ensuremath{\Lleftarrow}',
8667 => '\ensuremath{\Rrightarrow}',
'rAarr' => '\ensuremath{\Rrightarrow}',
8669 => '\ensuremath{\rightsquigarrow}',
'rarrw' => '\ensuremath{\rightsquigarrow}',
# Mathematical operators.
'forall' => '\ensuremath{\forall}',
8704 => '\ensuremath{\forall}',
'comp' => '\ensuremath{\complement}',
8705 => '\ensuremath{\complement}',
'part' => '\ensuremath{\partial}',
8706 => '\ensuremath{\partial}',
'exist' => '\ensuremath{\exists}',
8707 => '\ensuremath{\exists}',
'nexist' => '\ensuremath{\nexists}',
8708 => '\ensuremath{\nexists}',
'empty' => '\ensuremath{\emptyset}',
8709 => '\ensuremath{\emptyset}',
8710 => '\ensuremath{\Delta}',
'nabla' => '\ensuremath{\nabla}',
8711 => '\ensuremath{\nabla}',
'isin' => '\ensuremath{\in}',
8712 => '\ensuremath{\in}',
'notin' => '\ensuremath{\notin}',
8713 => '\ensuremath{\notin}',
ni => '\ensuremath{\ni}',
8715 => '\ensuremath{\ni}',
8716 => '\ensuremath{\not\ni}',
'prod' => '\ensuremath{\prod}',
8719 => '\ensuremath{\prod}',
8720 => '\ensuremath{\coprod}',
'sum' => '\ensuremath{\sum}',
8721 => '\ensuremath{\sum}',
'minus' => '\ensuremath{-}',
8722 => '\ensuremath{-}',
8723 => '\ensuremath{\mp}',
8724 => '\ensuremath{\dotplus}',
8725 => '\ensuremath{\diagup}',
8726 => '\ensuremath{\smallsetminus}',
'lowast' => '\ensuremath{*}',
8727 => '\ensuremath{*}',
8728 => '\ensuremath{\circ}',
8729 => '\ensuremath{\bullet}',
'radic' => '\ensuremath{\surd}',
8730 => '\ensuremath{\surd}',
8731 => '\ensuremath{\sqrt[3]{}}',
8732 => '\ensuremath{\sqrt[4]{}}',
'prop' => '\ensuremath{\propto}',
8733 => '\ensuremath{\propto}',
'infin' => '\ensuremath{\infty}',
8734 => '\ensuremath{\infty}',
# The items below require the isoent latex package which I can't find at least for FC5.
# Temporarily commented out.
'ang90' => '\ensuremath{\sqangle}',
8735 => '\ensuremath{\sqangle}',
'ang' => '\ensuremath{\angle}',
8736 => '\ensuremath{\angle}',
'angmsd' => '\ensuremath{\measuredangle}',
8737 => '\ensuremath{\measuredangle}',
'angsph' => '\ensuremath{\sphericalangle}',
8738 => '\ensuremath{\sphericalangle}',
8739 => '\ensuremath{\vert}',
8740 => '\ensuremath{\Vert}',
'and' => '\ensuremath{\land}',
8743 => '\ensuremath{\land}',
'or' => '\ensuremath{\lor}',
8744 => '\ensuremath{\lor}',
'cap' => '\ensuremath{\cap}',
8745 => '\ensuremath{\cap}',
'cup' => '\ensuremath{\cup}',
8746 => '\ensuremath{\cup}',
'int' => '\ensuremath{\int}',
8747 => '\ensuremath{\int}',
'conint' => '\ensuremath{\oint}',
8750 => '\ensuremath{\oint}',
'there4' => '\ensuremath{\therefore}',
8756 => '\ensuremath{\therefore}',
'becaus' => '\ensuremath{\because}',
8757 => '\ensuremath{\because}',
8758 => '\ensuremath{:}',
8759 => '\ensuremath{::}',
'sim' => '\ensuremath{\sim}',
8764 => '\ensuremath{\sim}',
8765 => '\ensuremath{\backsim}',
'wreath' => '\ensuremath{\wr}',
8768 => '\ensuremath{\wr}',
'nsim' => '\ensuremath{\not\sim}',
8769 => '\ensuremath{\not\sim}',
# 'asymp' => '\ensuremath{\asymp}', ≈ is actually a different glyph.
8771 => '\ensuremath{\asymp}',
8772 => '\ensuremath{\not\asymp}',
'cong' => '\ensuremath{\cong}',
8773 => '\ensuremath{\cong}',
8775 => '\ensuremath{\ncong}',
8778 => '\ensuremath{\approxeq}',
8784 => '\ensuremath{\doteq}',
8785 => '\ensuremath{\doteqdot}',
8786 => '\ensuremath{\fallingdotseq}',
8787 => '\ensuremath{\risingdotseq}',
8788 => '\ensuremath{:=}',
8789 => '\ensuremath{=:}',
8790 => '\ensuremath{\eqcirc}',
8791 => '\ensuremath{\circeq}',
'wedgeq' => '\ensuremath{\stackrel{\wedge}{=}}',
8792 => '\ensuremath{\stackrel{\wedge}{=}}',
8794 => '\ensuremath{\stackrel{\vee}{=}}',
8795 => '\ensuremath{\stackrel{\star}{=}}',
8796 => '\ensuremath{\triangleq}',
8797 => '\ensuremath{\stackrel{def}{=}}',
8798 => '\ensuremath{\stackrel{m}{=}}',
8799 => '\ensuremath{\stackrel{?}{=}}',
'ne' => '\ensuremath{\neq}',
8800 => '\ensuremath{\neq}',
'equiv' => '\ensuremath{\equiv}',
8801 => '\ensuremath{\equiv}',
8802 => '\ensuremath{\not\equiv}',
'le' => '\ensuremath{\leq}',
8804 => '\ensuremath{\leq}',
'ge' => '\ensuremath{\geq}',
8805 => '\ensuremath{\geq}',
8806 => '\ensuremath{\leqq}',
8807 => '\ensuremath{\geqq}',
8810 => '\ensuremath{\ll}',
8811 => '\ensuremath{\gg}',
'twixt' => '\ensuremath{\between}',
8812 => '\ensuremath{\between}',
8813 => '\ensuremath{\not\asymp}',
8814 => '\ensuremath{\not<}',
8815 => '\ensuremath{\not>}',
8816 => '\ensuremath{\not\leqslant}',
8817 => '\ensuremath{\not\geqslant}',
8818 => '\ensuremath{\lesssim}',
8819 => '\ensuremath{\gtrsim}',
8820 => '\ensuremath{\stackrel{<}{>}}',
8821 => '\ensuremath{\stackrel{>}{<}}',
8826 => '\ensuremath{\prec}',
8827 => '\ensuremath{\succ}',
8828 => '\ensuremath{\preceq}',
8829 => '\ensuremath{\succeq}',
8830 => '\ensuremath{\not\prec}',
8831 => '\ensuremath{\not\succ}',
'sub' => '\ensuremath{\subset}',
8834 => '\ensuremath{\subset}',
'sup' => '\ensuremath{\supset}',
8835 => '\ensuremath{\supset}',
'nsub' => '\ensuremath{\not\subset}',
8836 => '\ensuremath{\not\subset}',
8837 => '\ensuremath{\not\supset}',
'sube' => '\ensuremath{\subseteq}',
8838 => '\ensuremath{\subseteq}',
'supe' => '\ensuremath{\supseteq}',
8839 => '\ensuremath{\supseteq}',
8840 => '\ensuremath{\nsubseteq}',
8841 => '\ensuremath{\nsupseteq}',
8842 => '\ensuremath{\subsetneq}',
8843 => '\ensuremath{\supsetneq}',
8847 => '\ensuremath{\sqsubset}',
8848 => '\ensuremath{\sqsupset}',
8849 => '\ensuremath{\sqsubseteq}',
8850 => '\ensuremath{\sqsupseteq}',
8851 => '\ensuremath{\sqcap}',
8852 => '\ensuremath{\sqcup}',
'oplus' => '\ensuremath{\oplus}',
8853 => '\ensuremath{\oplus}',
8854 => '\ensuremath{\ominus}',
'otimes' => '\ensuremath{\otimes}',
8855 => '\ensuremath{\otimes}',
8856 => '\ensuremath{\oslash}',
8857 => '\ensuremath{\odot}',
8858 => '\ensuremath{\circledcirc}',
8859 => '\ensuremath{\circledast}',
8861 => '\ensuremath{\ominus}', # Close enough for government work.
8862 => '\ensuremath{\boxplus}',
8863 => '\ensuremath{\boxminus}',
8864 => '\ensuremath{\boxtimes}',
8865 => '\ensuremath{\boxdot}',
'vdash' => '\ensuremath{\vdash}',
8866 => '\ensuremath{\vdash}',
'dashv' => '\ensuremath{\dashv}',
8867 => '\ensuremath{\dashv}',
'perp' => '\ensuremath{\perp}',
8869 => '\ensuremath{\perp}',
8871 => '\ensuremath{\models}',
8872 => '\ensuremath{\vDash}',
8873 => '\ensuremath{\Vdash}',
8874 => '\ensuremath{\Vvdash}',
8876 => '\ensuremath{\nvdash}',
8877 => '\ensuremath{\nvDash}',
8878 => '\ensuremath{\nVdash}',
8880 => '\ensuremath{\prec}',
8881 => '\ensuremath{\succ}',
8882 => '\ensuremath{\vartriangleleft}',
8883 => '\ensuremath{\vartriangleright}',
8884 => '\ensuremath{\trianglelefteq}',
8885 => '\ensuremath{\trianglerighteq}',
8891 => '\ensuremath{\veebar}',
8896 => '\ensuremath{\land}',
8897 => '\ensuremath{\lor}',
8898 => '\ensuremath{\cap}',
8899 => '\ensuremath{\cup}',
8900 => '\ensuremath{\diamond}',
'sdot' => '\ensuremath{\cdot}',
8901 => '\ensuremath{\cdot}',
8902 => '\ensuremath{\star}',
8903 => '\ensuremath{\divideontimes}',
8904 => '\ensuremath{\bowtie}',
8905 => '\ensuremath{\ltimes}',
8906 => '\ensuremath{\rtimes}',
8907 => '\ensuremath{\leftthreetimes}',
8908 => '\ensuremath{\rightthreetimes}',
8909 => '\ensuremath{\simeq}',
8910 => '\ensuremath{\curlyvee}',
8911 => '\ensuremath{\curlywedge}',
8912 => '\ensuremath{\Subset}',
8913 => '\ensuremath{\Supset}',
8914 => '\ensuremath{\Cap}',
8915 => '\ensuremath{\Cup}',
8916 => '\ensuremath{\pitchfork}',
8918 => '\ensuremath{\lessdot}',
8919 => '\ensuremath{\gtrdot}',
8920 => '\ensuremath{\lll}',
8921 => '\ensuremath{\ggg}',
8922 => '\ensuremath{\gtreqless}',
8923 => '\ensuremath{\lesseqgtr}',
8924 => '\ensuremath{\eqslantless}',
8925 => '\ensuremath{\eqslantgtr}',
8926 => '\ensuremath{\curlyeqprec}',
8927 => '\ensuremath{\curlyeqsucc}',
8928 => '\ensuremath{\not\preccurlyeq}',
8929 => '\ensuremath{\not\succcurlyeq}',
8930 => '\ensuremath{\not\sqsupseteq}',
8931 => '\ensuremath{\not\sqsubseteq}',
8938 => '\ensuremath{\not\vartriangleleft}',
8939 => '\ensuremath{\not\vartriangleright}',
8940 => '\ensuremath{\not\trianglelefteq}',
8941 => '\ensuremath{\not\trianglerighteq}',
8942 => '\ensuremath{\vdots}',
8960 => '\ensuremath{\varnothing}',
'lceil' => '\ensuremath{\lceil}',
8968 => '\ensuremath{\lceil}',
'rceil' => '\ensuremath{\rceil}',
8969 => '\ensuremath{\rceil}',
'lfloor' => '\ensuremath{\lfloor}',
8970 => '\ensuremath{\lfloor}',
'rfloor' => '\ensuremath{\rfloor}',
8971 => '\ensuremath{\rfloor}',
'lang' => '\ensuremath{\langle}',
9001 => '\ensuremath{\langle}',
'rang' => '\ensuremath{\rangle}',
9002 => '\ensuremath{\rangle}',
'loz' => '\ensuremath{\lozenge}',
9674 => '\ensuremath{\lozenge}',
'spades' => '\ensuremath{\spadesuit}',
9824 => '\ensuremath{\spadesuit}',
9825 => '\ensuremath{\heartsuit}',
9826 => '\ensuremath{\diamondsuit}',
'clubs' => '\ensuremath{\clubsuit}',
9827 => '\ensuremath{\clubsuit}',
'diams' => '\ensuremath{\blacklozenge}',
9830 => '\ensuremath{\blacklozenge}'
);
=pod
=head1 UNICODE TABLE
=over
There are some named entities that don't have a good
latex equivalent, these are converted to utf-8 via this table
of entity name -> unicode number.
=back
=cut
my %utf_table = (
'THORN' => 222,
'thorn' => 254,
'eth' => 240,
'hearts' => 9829
);
sub entity_to_utf8 {
my ($unicode) = @_;
my $result = pack("U", $unicode);
return $result;
}
sub entity_to_latex {
my ($entity) = @_;
# Try to look up the entity (text or numeric) in the hash:
my $latex = $entities{"$entity"};
if (defined $latex) {
return $latex;
}
# If the text is purely numeric we can do the UTF-8 conversion:
# Otherwise there are a few textual entities that don't have good latex
# which can be converted to unicode:
#
if ($entity =~ /^\d+$/) {
return &entity_to_utf8($entity);
} else {
my $result = $utf_table{"$entity"};
if (defined $result) {
return &entity_to_utf8($result);
}
}
# Can't do the conversion`< ...
return " ";
}
sub replace_entities {
my ($input) = @_;
my $start;
my $end;
my $entity;
my $latex;
# First the &#nnn; entities:
while ($input =~ /(&\#\d+;)/) {
($start) = @-;
($end) = @+;
$entity = substr($input, $start+2, $end-$start-3);
$latex = &entity_to_latex($entity);
substr($input, $start, $end-$start) = $latex;
}
# Hexadecimal entities:
while ($input =~ /&\#x(\d|[a-f,A-f])+;/) {
($start) = @-;
($end) = @+;
$entity = "0" . substr($input, $start+2, $end-$start-3); # 0xhexnumber
$latex = &entity_to_latex(hex($entity));
substr($input, $start, $end-$start) = $latex;
}
# Now the &text; entites;
while ($input =~/(&\w+;)/) {
($start) = @-;
($end) = @+;
$entity = substr($input, $start+1, $end-$start-2);
$latex = &entity_to_latex($entity);
substr($input, $start, $end-$start) = $latex;
}
return $input;
}
1;
__END__
=pod
=head1 NAME
Apache::entities.pm
=head1 SYNOPSIS
This file contains a table driven entity-->latex converter.
This is part of the LearningOnline Network with CAPA project
described at http://www.lon-capa.org.
=head1 OVERVIEW
Assumptions:
The number of entities in a resource is small compared with the
number of possible entities that might be translated.
Therefore the strategy is to match a general entity pattern
&.+; over and over, pull out the match look it up in an entity -> tex hash
and do the replacement.
In order to simplify the hash, the following reductions are done:
&#d+; have the &# and ; stripped and is converted to an int.
&#.+; have the &#x and ; stripped and is converted to an int as a hex
value.
All others have the & and ; stripped.
The hash: Add new conversions here; leave off the leading & and the trailing ;
all numeric entities need only appear as their decimal versions
(e.g. no need for 1234 is sufficient, no need for 0x4d2 as well.
This entity table is mercilessly cribbed from the HTML pocket reference
table starting at pg 82. In most cases the LaTeX equivalent codes come from
the original massive regular expression replacements originally by
A. Sakharuk in lonprintout.pm
I also want to acknowledge
ISO Character entities and their LaTeX equivalents by
Vidar Bronken Gundersen, and Rune Mathisen
http://www.bitjungle.com/isoent-ref.pdf
Note numerical entities are essentially unicode character codes.
=head1 SUBROUTINES
=over
=item entity_to_utf8()
Convert a numerical entity (that does not exist in our hash)
to its UTF-8 equivalent representation.
This allows us to support, to some extent, any entity for which
dvipdf can find a gylph (given that LaTeX is now UTF-8 clean).
Parameters:
unicode - The unicode for the character. This is assumed to
be a decimal value
Returns:
The UTF-8 equiavalent of the value.
=item entity_to_latex()
Convert an entity to the corresponding LateX if possible.
If not possible, and the entity is numeric,
the entity is treated like a Unicode character and converted
to UTF-8 which should display as long as dvipdf can find the
appropriate glyph.
The entity is assumed to have already had the
&; or & ; removed
Parameters:
entity - Name of entity to convert.
Returns:
One of the following:
- Latex string that produces the entity.
- UTF-8 equivalent of a numeric entity for which we don't have a latex string.
- ' ' for text entities for which there's no latex equivalent.
=item replace_entities()
Convert all the entities in a string.
We locate all the entities, pass them into entity_to_latex and
and replace occurences in the input string.
The assumption is that there are few entities in any string/document
so this looping is not too bad. The advantage of looping vs. regexping is
that we now can use lookup tables for the translation in entity_to_latex above.
Parameters:
input - Input string/document
Returns
input with entities replaced by latexable stuff (UTF-8 encodings or
latex control strings to produce the entity.
=back
=cut
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