File:  [LON-CAPA] / loncom / interface / entities.pm
Revision 1.4: download - view: text, annotated - select for diffs
Tue Apr 1 10:45:44 2008 UTC (16 years, 2 months ago) by foxr
Branches: MAIN
CVS tags: HEAD
Added a bunch more entities.. up through the boxes.
Had an epihpany..any numeric entities for which there is no latex equivalent
can just turn the number into a Utf-8 character and things should turn out
all right

    1: # The LearningOnline Network
    2: # entity -> tex.
    3: #
    4: # $Id:
    5: #
    6: # Copyright Michigan State University Board of Trustees
    7: #
    8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
    9: #
   10: # LON-CAPA is free software; you can redistribute it and/or modify
   11: # it under the terms of the GNU General Public License as published by
   12: # the Free Software Foundation; either version 2 of the License, or
   13: # (at your option) any later version.
   14: #
   15: # LON-CAPA is distributed in the hope that it will be useful,
   16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   18: # GNU General Public License for more details.
   19: #
   20: # You should have received a copy of the GNU General Public License
   21: # along with LON-CAPA; if not, write to the Free Software
   22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   23: #
   24: # /home/httpd/html/adm/gpl.txt
   25: # http://www.lon-capa.org/
   26: #
   27: #
   28: package Apache::entities;
   29: use strict;
   30: #
   31: #   This file contains a table driven entity-->latex converter.
   32: #
   33: #  Assumptions:
   34: #   The number of entities in a resource is small compared with the
   35: #   number of possible entities that might be translated.
   36: #   Therefore the strategy is to match a general entity pattern
   37: #   &.+; over and over, pull out the match look it up in an entity -> tex hash
   38: #   and do the replacement.
   39: #
   40: #  In order to simplify the hash, the following reductions are done:
   41: #   &#d+; have the &# and ; stripped and is converted to an int.
   42: #   &#.+; have the &#x and ; stripped and is converted to an int as a hex
   43: #                             value.
   44: #   All others have the & and ; stripped.
   45: 
   46: 
   47: #  The hash:  Add new conversions here; leave off the leading & and the trailing ;
   48: #  all numeric entities need only appear as their decimal versions
   49: #  (e.g. no need for 1234 is sufficient, no need for 0x4d2 as well.
   50: #
   51: #  This entity table is mercilessly cribbed from the  HTML pocket reference
   52: #  table starting at pg 82.  In most cases the LaTeX equivalent codes come from
   53: #  the original massive regular expression replacements originally by 
   54: #  A. Sakharuk in lonprintout.pm
   55: #
   56: #  I also want to acknowledge
   57: #   ISO Character entities and their LaTeX equivalents by 
   58: #      Vidar Bronken Gundersen, and Rune Mathisen
   59: #    http://www.bitjungle.com/isoent-ref.pdf
   60: #
   61: 
   62: #  Note numerical entities are essentially unicode character codes.
   63: #
   64: my %entities = {
   65: 
   66:     #  ---- ASCII code page: ----------------
   67: 
   68:     # Translation to empty strings:
   69: 
   70:     7        => "",
   71:     9        => "",
   72:     10       => "",
   73:     13       => "",
   74:     
   75:     # Translations to simple characters:
   76: 
   77:     32       => " ",
   78:     33       => "!",
   79:     34       => '"',
   80:     'quot'   => '"',
   81:     35       => '\\\#',
   82:     36       => '\\\$',
   83:     37       => '\\%',
   84:     38       => '\\&',
   85:     'amp'    => '\\&',
   86:     39       => '\'',		# Apostrophe
   87:     40       => '(',
   88:     41       => ')',
   89:     42       => '\*',
   90:     43       => '\+',
   91:     44       => ',',		#  comma
   92:     45       => '-',
   93:     46       => '\.',
   94:     47       => '\/',
   95:     48       => '0',
   96:     49       => '1',
   97:     50       => '2',
   98:     51       => '3',
   99:     52       => '4',
  100:     53       => '5',
  101:     54       => '6',
  102:     55       => '7',
  103:     56       => '8',
  104:     57       => '9',
  105:     58       => ':',
  106:     59       => ';',
  107:     60       => '\\ensuremath\{<\}',
  108:     'lt'     => '\\ensuremath\{<\}',
  109:     61       => '\\ensuremath\{=\}',
  110:     62       => '\\ensuremath\{>\}',
  111:     'gt'     => '\\ensuremath\{>\}',
  112:     63       => '\?',
  113:     64       => '@',
  114:     65       => 'A',
  115:     66       => 'B',
  116:     67       => 'C',
  117:     68       => 'D',
  118:     69       => 'E',
  119:     70       => 'F',
  120:     71       => 'G',
  121:     72       => 'H',
  122:     73       => 'I',
  123:     74       => 'J',
  124:     75       => 'K',
  125:     76       => 'L',
  126:     77       => 'M',
  127:     78       => 'N',
  128:     79       => 'O',
  129:     80       => 'P',
  130:     81       => 'Q',
  131:     82       => 'R',
  132:     83       => 'S',
  133:     84       => 'T',
  134:     85       => 'U',
  135:     86       => 'V',
  136:     87       => 'W',
  137:     88       => 'X',
  138:     89       => 'Y',
  139:     90       => 'Z',
  140:     91       => '[',
  141:     92       => '\\ensuremath\{\\setminus\}', # \setminus is \ with special spacing.
  142:     93       => ']',
  143:     94       => '\\ensuremath\{\\wedge\}',
  144:     95       => '\\underline\{\\makebox[2mm]\\{\\strut\}\}', # Underline 2mm of space for _
  145:     96       => '`',
  146:     97       => 'a',
  147:     98       => 'b',
  148:     99       => 'c',
  149:     100      => 'd',
  150:     101      => 'e',
  151:     102      => 'f',
  152:     103      => 'g',
  153:     104      => 'h', 
  154:     105      => 'i',
  155:     106      => 'j',
  156:     107      => 'k',
  157:     108      => 'l',
  158:     109      => 'm',
  159:     110      => 'n',
  160:     111      => 'o',
  161:     112      => 'p',
  162:     113      => 'q',
  163:     114      => 'r',
  164:     115      => 's',
  165:     116      => 't',
  166:     117      => 'u',
  167:     118      => 'v',
  168:     119      => 'w',
  169:     120      => 'x',
  170:     121      => 'y',
  171:     122      => 'z',
  172:     123      => '\\{',
  173:     124      => '\|',
  174:     125      => '\\}',
  175:     126      => '\~',
  176: 
  177:     #   Controls and Latin-1 supplement.  Note that some entities that have
  178:     #   visible effect are not printing unicode characters.  Specifically
  179:     #   &#130;-&#160;
  180: 
  181:     130     => ',',
  182:     131     => '\\textflorin ',
  183:     132     => ',,',		# Low double left quotes.
  184:     133     => '\\ensuremat\{\\ldots\}',
  185:     134     => '\\ensuremath\{\\dagger\}',
  186:     135     => '\\ensuremath\{\\ddagger\}',
  187:     136     => '\\ensuremath\{\\wedge\}',
  188:     137     => '\\textperthousand ',
  189:     138     => '\\v\{S\}',
  190:     139     => '\\ensuremath\{<\}',
  191:     140     => '\{\\OE\}',
  192:     
  193:     #  There's a gap here in my entity table
  194: 
  195:     145     => '\`',
  196:     146     => '\'',
  197:     147     => '\`\`',
  198:     148     => '\'\'',
  199:     149     => '\\ensuremath\{\\bullet\}',
  200:     150     => '--',
  201:     151     => '---',
  202:     152     => '\\ensuremath\{\\sim\}',
  203:     153     => '\\texttrademark',
  204:     154     => '\\v\{s\}',
  205:     155     => '\\ensuremath\{>\}',
  206:     156     => '\\oe ',
  207:     
  208:     # Another short gap:
  209: 
  210:     159     => '\\"Y',
  211:     160     => '~',
  212:     'nbsp'  => '~',
  213:     161     => '\\textexclamdown ',
  214:     'iexcl' => '\\textexclamdown ',
  215:     162     => '\\textcent ',
  216:     'cent'  => '\\textcent ',
  217:     163     => '\\pounds ',
  218:     'pound' => '\\pounds ',
  219:     164     => '\\textcurrency ',
  220:     'curren' => '\\textcurrency ',
  221:     165     => '\\textyen ',
  222:     'yen'   => '\\textyen ',
  223:     166     => '\\textbrokenbar ',
  224:     'brvbar' => '\\textbrokenbar ',
  225:     167     => '\\textsection ',
  226:     'sect'  => '\\textsection ',
  227:     168     => '\\texthighdieresis ',
  228:     'uml'   => '\\texthighdieresis ',
  229:     169     => '\\copyright ',
  230:     'copy'  => '\\copyright ',
  231:     170     => '\\textordfeminine ',
  232:     'ordf'  => '\\textordfeminine ',
  233:     171     => '\\ensuremath\{\ll\}', # approximation of left angle quote.
  234:     'laquo' => '\\ensuremath\{\ll\}', #   ""
  235:     172     => '\\ensuremath\{\\neg\}',
  236:     'not'   => '\\ensuremath\{\\neg\}',
  237:     173     => ' - ',
  238:     'shy'   => ' - ',
  239:     174     => '\\textregistered ',
  240:     'reg'   => '\\textregistered ',
  241:     175     => '\\ensuremath\{^\{-\}\}',
  242:     'macr'  => '\\ensuremath\{^\{-\}\}',
  243:     176     => '\\ensuremath\{^\{\\circ\}\}',
  244:     'deg'   => '\\ensuremath\{^\{\\circ\}\}',
  245:     177     => '\\ensuremath\{\\pm\}',
  246:     'plusmn' => '\\ensuremath\{\\pm\}',
  247:     178     => '\\ensuremath\{^2\}',
  248:     'sup2'  => '\\ensuremath\{^2\}',
  249:     179     => '\\ensuremath\{^3\}',
  250:     'sup3'  => '\\ensuremath\{^3\}',
  251:     180     => '\\textacute ',
  252:     'acute' => '\\textacute ',
  253:     181     => '\\ensuremath\{\\mu\}',
  254:     'micro' => '\\ensuremath\{\\mu\}',
  255:     182     => '\\P ',
  256:     para    => '\\P ',
  257:     183     => '\\ensuremath\{\\cdot\}',
  258:     'middot' => '\\ensuremath\{\\cdot\}',
  259:     184     => '\\c\{\\strut\}',
  260:     'cedil' => '\\c\{\\strut\}',
  261:     185     => '\\ensuremath\{^1\}',
  262:     sup1    => '\\ensuremath\{^1\}',
  263:     186     => '\\textordmasculine ',
  264:     'ordm'  => '\\textordmasculine ',
  265:     187     => '\\ensuremath\{\\gg\}',
  266:     'raquo' => '\\ensuremath\{\\gg\}',
  267:     188     => '\\textonequarter ',
  268:     'frac14' => '\\textonequarter ',
  269:     189     => '\\textonehalf' ,
  270:     'frac12' => '\\textonehalf' ,
  271:     190     => '\\textthreequarters ',
  272:     'frac34' => '\\textthreequarters ',
  273:     191     =>  '\\textquestiondown ',
  274:     'iquest' => '\\textquestiondown ',
  275:     192     => '\\\`\{A\}',
  276:     'Agrave' => '\\\`\{A\}',
  277:     193     => '\\\'\{A\}',
  278:     'Aacute' => '\\\'\{A\}',
  279:     194     => '\\^\{A\}',
  280:     'Acirc' => '\\^\{A\}',
  281:     195     => '\\~{A}',
  282:     'Atilde'=> '\\~{A}',
  283:     196     => '\\\"{A}',
  284:     'Auml'  => '\\\"{A}',
  285:     197     => '{\\AA}',
  286:     'Aring' => '{\\AA}',
  287:     198     => '{\\AE}',
  288:     'AElig' => '{\\AE}',
  289:     199     => '\\c{c}',
  290:     'Ccedil'=> '\\c{c}',
  291:     '200'   => '\\\`{E}',
  292:     'Egrave'=> '\\\`{E}',
  293:     201     => '\\\'{E}',
  294:     'Eacute'=> '\\\'{E}',
  295:     202     => '\\\^{E}',
  296:     'Ecirc' => '\\\^{E}',
  297:     203     => '\\\"{E}',
  298:     'Euml'  => '\\\"{E}',
  299:     204     => '\\\`{I}',
  300:     'Igrave'=> '\\\`{I}',
  301:     205     => '\\\'{I}',
  302:     'Iacute'=> '\\\'{I}',
  303:     206     => '\\\^{I}',
  304:     'Icirc' => '\\\^{I}',
  305:     207     => '\\\"{I}',
  306:     'Iuml'  => '\\\"{I}',
  307:     208     => '\\OE',
  308:     'ETH'   => '\\OE',
  309:     209     => '\\~{N}',
  310:     'Ntilde'=> '\\~{N}',
  311:     210     => '\\\`{O}',
  312:     'Ograve'=> '\\\`{O}',
  313:     211     => '\\\'{O}',
  314:     'Oacute'=> '\\\'{O}',
  315:     212     => '\\\^{O}',
  316:     'Ocirc' => '\\\^{O}',
  317:     213     => '\\~{O}',
  318:     'Otilde'=> '\\~{O}',
  319:     214     => '\\\"{O}',
  320:     'Ouml'  => '\\\"{O}',
  321:     215     => '\\ensuremath\{\\times\}',
  322:     'times' => '\\ensuremath\{\\times\}',
  323:     216     => '\\O',
  324:     'Oslash'=> '\\O',
  325:     217     => '\\\`{U}',
  326:     'Ugrave'=> '\\\`{U}',
  327:     218     => '\\\'{U}',
  328:     'Uacute'=> '\\\'{U}',
  329:     219     => '\\\^{U}',
  330:     'Ucirc' => '\\\^{U}',
  331:     220     => '\\\"{U}',
  332:     'Uuml'  => '\\\"{U}',
  333:     221     => '\\\'{Y}',
  334:     'Yacute'=> '\\\'{Y}',
  335:     222     => '\\TH',
  336:     'THORN' => '\\TH',
  337:     223     => '{\\sz}',
  338:     'szlig' => '{\\sz}',
  339:     224     => '\\\`{a}',
  340:     'agrave'=> '\\\`{a}',
  341:     225     => '\\\'{a}',
  342:     'aacute'=> '\\\'{a}',
  343:     226     => '\\\^{a}',
  344:     'acirc' => '\\\^{a}',
  345:     227     => '\\\~{a}',
  346:     'atilde'=> '\\\~{a}',
  347:     228     => '\\\"{a}',
  348:     'auml'  => '\\\"{a}',
  349:     229     => '\\aa',
  350:     'aring' => '\\aa',
  351:     230     => '\\ae',
  352:     'aelig' => '\\ae',
  353:     231     => '\\c{c}',
  354:     'ccedil'=> '\\c{c}',
  355:     232     => '\\\`{e}',
  356:     'egrave'=> '\\\`{e}',
  357:     233     => '\\\'{e}',
  358:     'eacute'=> '\\\'{e}',
  359:     234     => '\\\^{e}',
  360:     'ecirc' => '\\\^{e}',
  361:     235     => '\\\"{e}',
  362:     'euml'  => '\\\"{e}',
  363:     236     => '\\\`{i}',
  364:     'igrave'=> '\\\`{i}',
  365:     237     => '\\\'{i}',
  366:     'iacute'=> '\\\'{i}',
  367:     238     => '\\\^{i}',
  368:     'icirc' => '\\\^{i}',
  369:     239     => '\\\"{i}',
  370:     'iuml'  => '\\\"{i}',
  371:     240     => '\\dh',
  372:     'eth'   => '\\dh',
  373:     241     => '\\\~{n}',
  374:     'ntilde'=> '\\\~{n}',
  375:     242     => '\\\`{o}',
  376:     'ograve'=> '\\\`{o}',
  377:     243     => '\\\'{o}',
  378:     'oacute'=> '\\\'{o}',
  379:     244     => '\\\^{o}',
  380:     'ocirc' => '\\\^{o}',
  381:     245     => '\\\~{o}',
  382:     'otilde'=> '\\\~{o}',
  383:     246     => '\\\"{o}',
  384:     'ouml'  => '\\\"{o}',
  385:     247     => '\\ensuremath\{\\div\}',
  386:     'divide'=> '\\ensuremath\{\\div\}',
  387:     248     => '{\\o}',
  388:     'oslash'=> '{\\o}',
  389:     249     => '\\\`{u}',
  390:     'ugrave'=> '\\\`{u}',
  391:     250     => '\\\'{u}',
  392:     'uacute'=> '\\\'{u}',
  393:     251     => '\\\^{u}',
  394:     'ucirc' => '\\\^{u}',
  395:     252     => '\\\"{u}',
  396:     'uuml'  => '\\\"{u}',
  397:     253     => '\\\'{y}',
  398:     'yacute'=> '\\\'{y}',
  399:     254     => '\\th',
  400:     'thorn' => '\\th',
  401:     255     => '\\\"{y}',
  402:     'yuml'  => '\\\"{y}',
  403: 
  404:     # hbar entity number comes from the unicode charater:
  405:     # see e.g. http://www.unicode.org/charts/PDF/U0100.pdf
  406:     # ISO also documents a 'planck' entity.
  407: 
  408:     295     => '\\ensuremath\{\hbar\}',
  409:     'plank' => '\\ensuremath\{\hbar\}',
  410: 
  411:     # Latin extended-A HTML 4.01 entities:
  412: 
  413:     338      => '\\OE',
  414:     'OElig'  => '\\OE',
  415:     339      => '\\oe',
  416:     'oelig'  => '\\oe',
  417:     352      => '\\v{S}',
  418:     'Scaron' => '\\v{S}',
  419:     353      => '\\v{s}',
  420:     'scaron' => '\\v{s}',
  421:     376      => '\\\"{Y}',
  422:     'Yuml'   => '\\\"{Y}', 
  423: 
  424: 
  425:     # Latin extended B HTML 4.01 entities
  426: 
  427:     402      => '\\ensuremath{f}',
  428:     'fnof'   => '\\ensuremath{f}',
  429: 
  430:     # Spacing modifier letters:
  431:     
  432:     710      => '\^{}',
  433:     'circ'   => '\^{}',
  434:     732      => '\~{}',
  435:     'tilde'  => '\~{}',
  436: 
  437:     # Greek uppercase:
  438: 
  439:     913      => '\\ensuremath\{\\mathrm\{A\}\}',
  440:     'Alpha'  => '\\ensuremath\{\\mathrm\{A\}\}',
  441:     914      => '\\ensuremath\{\\mathrm\{B\}\}',
  442:     'Beta'   => '\\ensuremath\{\\mathrm\{B\}\}',
  443:     915      => '\\ensuremath\{\\Gamma\}',
  444:     'Gamma'  => '\\ensuremath\{\\Gamma\}',
  445:     916      => '\\ensuremath\{\\Delta\}',
  446:     'Delta'  => '\\ensuremath\{\\Delta\}',
  447:     917      => '\\ensuremath\{\\mathrm\{E\}\}',
  448:     'Epsilon'=> '\\ensuremath\{\\mathrm\{E\}\}',
  449:     918      => '\\ensuremath\{\\mathrm\{Z\}\}',
  450:     'Zeta'   => '\\ensuremath\{\\mathrm\{Z\}\}',
  451:     919      => '\\ensuremath\{\\mathrm\{H\}\}',
  452:     'Eta'    => '\\ensuremath\{\\mathrm\{H\}\}',
  453:     920      => '\\ensuremath\{\\Theta\}',
  454:     'Theta'  => '\\ensuremath\{\\Theta\}',
  455:     921      => '\\ensuremath\{\\mathrm\{I\}\}',
  456:     'Iota'   => '\\ensuremath\{\\mathrm\{I\}\}',
  457:     922      => '\\ensuremath\{\\mathrm\{K\}\}',
  458:     'Kappa'  => '\\ensuremath\{\\mathrm\{K\}\}',
  459:     923      => '\\ensuremath\{\\Lambda\}',
  460:     'Lambda' => '\\ensuremath\{\\Lambda\}',
  461:     924      => '\\ensuremath\{\\mathrm\{M\}\}',
  462:     'Mu'     => '\\ensuremath\{\\mathrm\{M\}\}',
  463:     925      => '\\ensuremath\{\\mathrm\{N\}\}',
  464:     'Nu'     => '\\ensuremath\{\\mathrm\{N\}\}',
  465:     926      => '\\ensuremath\{\\mathrm\{\\Xi\}',
  466:     'Xi'     => '\\ensuremath\{\\mathrm\{\\Xi\}',
  467:     927      => '\\ensuremath\{\\mathrm\{O\}\}',
  468:     'Omicron'=> '\\ensuremath\{\\mathrm\{O\}\}',
  469:     928      => '\\ensuremath\{\\Pi\}',
  470:     'Pi'     => '\\ensuremath\{\\Pi\}',
  471:     929      => '\\ensuremath\{\\mathrm\{P\}\}',
  472:     'Rho'    => '\\ensuremath\{\\mathrm\{P\}\}',
  473:    
  474:     # Skips 930
  475: 
  476:     931      => '\\ensuremath\{\Sigma\}',
  477:     'Sigma'  => '\\ensuremath\{\Sigma\}',
  478:     932      => '\\ensuremath\{\\mathrm\{T\}\}',
  479:     'Tau'    => '\\ensuremath\{\\mathrm\{T\}\}',
  480:     933      => '\\ensuremath\{\\Upsilon\}',
  481:     'Upsilon'=> '\\ensuremath\{\\Upsilon\}',
  482:     934      => '\\ensuremath\{\\Phi\}',
  483:     'Phi'    => '\\ensuremath\{\\Phi\}',
  484:     935      => '\\ensuremath\{\\mathrm\{X\}\}',
  485:     'Chi'    => '\\ensuremath\{\\mathrm\{X\}\}',
  486:     936      => '\\ensuremath\{\\Psi\}',
  487:     'Psi'    => '\\ensuermath\{\\Psi\}',
  488:     937      => '\\ensuremath\{\\Omega\}',
  489:     'Omega'  => '\\ensuremath\{\\Omega\}',
  490: 
  491: 
  492:     # Greek lowercase:
  493: 
  494:     945      => '\\ensuremath\{\\alpha\}',
  495:     'alpha'  => '\\ensuremath\{\\alpha\}',
  496:     946      => '\\ensuremath\{\\beta\}',
  497:     'beta'   => '\\ensuremath\{\\beta\}',
  498:     947      => '\\ensuremath\{\\gamma\}',
  499:     'gamma'  => '\\ensuremath\{\\gamma\}',
  500:     948      => '\\ensuremath\{\\delta\}',
  501:     'delta'  => '\\ensuremath\{\\delta\}',
  502:     949      => '\\ensuremath\{\\epsilon\}',
  503:     'epsilon'=> '\\ensuremath\{\\epsilon\}',
  504:     950      => '\\ensuremath\{\\zeta\}',
  505:     'zeta'   => '\\ensuremath\{\\zeta\}',
  506:     951      => '\\ensuremath\{\\eta\}',
  507:     'eta'    => '\\ensuremath\{\\eta\}',
  508:     952      => '\\ensuremath\{\\theta\}',
  509:     'theta'  => '\\ensuremath\{\\theta\}',
  510:     953      => '\\ensuremath\{\\iota\}',
  511:     'iota'   => '\\ensuremath\{\\iota\}',
  512:     954      => '\\ensuremath\{\\kappa\}',
  513:     'kappa'  => '\\ensuremath\{\\kappa\}',
  514:     955      => '\\ensuremath\{\\lambda\}',
  515:     'lambda' => '\\ensuremath\{\\lambda\}',
  516:     956      => '\\ensuremath\{\\mu\}',
  517:     'mu'     => '\\ensuremath\{\\mu\}',
  518:     957      => '\\ensuremath\{\\nu\}',
  519:     'nu'     => '\\ensuremath\{\\nu\}',
  520:     958      => '\\ensuremath\{\\xi\}',
  521:     'xi'     => '\\ensuremath\{\\xi\}',
  522:     959      => '\\ensuremath\{o\}',
  523:     'omicron'=> '\\ensuremath\{o\}',
  524:     960      => '\\ensuremath\{\\pi\}',
  525:     'pi'     => '\\ensuremath\{\\pi\}',
  526:     961      => '\\ensuremath\{\\rho\}',
  527:     'rho'    => '\\ensuremath\{\\rho\}',
  528:     962      => '\\ensuremath\{\\varsigma\}',
  529:     'sigmaf' => '\\ensuremath\{\\varsigma\}',
  530:     963      => '\\ensuremath\{\\sigma\}',
  531:     'sigma'  => '\\ensuremath\{\\sigma\}',
  532:     964      => '\\ensuremath\{\\tau\}',
  533:     'tau'    => '\\ensuremath\{\\tau\}',
  534:     965      => '\\ensuremath\{\\upsilon\}',
  535:     'upsilon'=> '\\ensuremath\{\\upsilon\}',
  536:     966      => '\\ensuremath\{\\phi\}',
  537:     'phi'    => '\\ensuremath\{\\phi\}',
  538:     967      => '\\ensuremath\{\\chi\}',
  539:     'chi'    => '\\ensuremath\{\\chi\}',
  540:     968      => '\\ensuremath\{\\psi\}',
  541:     'psi'    => '\\ensuremath\{\\psi\}',
  542:     969      => '\\ensuremath\{\\omega\}',
  543:     'omega'  => '\\ensuremath\{\\omega\}',
  544:     977      => '\\ensuremath\{\\vartheta\}',
  545:     'thetasym'=>'\\ensuremath\{\\vartheta\}',
  546:     978      => '\\ensuremath\{\\varUpsilon\}',
  547:     'upsih'  => '\\ensuremath\{\\varUpsilon\}',
  548:     982      => '\\ensuremath\{\\varpi\}',
  549:     'piv'    => '\\ensuremath\{\\varpi\}',
  550: 
  551:     
  552:     # The general punctuation set:
  553: 
  554:     8194,    => '\\hspace{.5em}',
  555:     'enspc'  => '\\hspace{.5em}',
  556:     8195     => '\\hspace{1.0em}',
  557:     'emspc'  => '\\hspace{1.0em}',
  558:     8201     => '\\hspace{0.167em}',
  559:     'thinsp' => '\\hspace{0.167em}',
  560:     8204     => '\{\}',
  561:     'zwnj'   => '\{\}',
  562:     8205     => '',
  563:     'zwj'    => '',
  564:     8206     => '',
  565:     'lrm'    => '',
  566:     8207     => '',
  567:     'rlm'    => '',
  568:     8211     => '--',
  569:     'ndash'  => '--',
  570:     8212     => '---',
  571:     'mdash'  => '---',
  572:     8216     => '`',
  573:     'lsquo'  => '`',
  574:     8217     => "'",
  575:     'rsquo'  => "'",
  576:     8218     => '\\quotesinglebase',
  577:     'sbquo'  => '\\quotesinglebase',
  578:     8220     => '``',
  579:     'ldquo'  => '``',
  580:     8221     => "''",
  581:     'rdquo'  => "''",
  582:     8222     => '\\quotedblbase',
  583:     'bdquo'  => '\\quotedblbase',
  584:     8224     => '\\dagger',
  585:     'dagger' => '\\dagger',
  586:     '8225'   => '\\ddag',
  587:     'Dagger' => '\\ddag',
  588:     8226     => '\\textbullet',
  589:     'bull'   => '\\textbullet',
  590:     8230     => '\\textellipsis',
  591:     'hellep' => '\\textellipsis',
  592:     8240     => '\\textperthousand',
  593:     permil   => '\\textperthousand',
  594:     8242     => '\\textquotesingle',
  595:     'prime'  => '\\textquotesingle',
  596:     8243     => '\\textquotedbl',
  597:     'Prime'  => '\\textquotedbl',
  598:     8249     => '\\guilsingleleft',
  599:     'lsaquo' => '\\guilsingleleft',
  600:     8250     => '\\guilsingleright',
  601:     'rsaquo' => '\\guilsingleright',
  602:     8254     => '\\textasciimacron',
  603:     oline    => '\\textasciimacron',
  604:     8260     => '\\textfractionsolidus',
  605:     'frasl'  => '\\textfractionsolidus',
  606:     8364     => '\\texteuro',
  607:     'euro'   => '\\texteuro',
  608: 
  609:     # Letter like symbols
  610: 
  611:     
  612:     8472     => '\\ensuremath\{\\wp\}',
  613:     'weierp' => '\\ensuremath\{\\wp\}',
  614:     8465     => '\\ensuremath\{\\Im\}',
  615:     'image'  => '\\ensuremath\{\\Im\}',
  616:     8476     => '\\ensuremath{\\Re\}',
  617:     'real'   => '\\ensuremath{\\Re\}',
  618:     8482     => '\\texttrademark',
  619:     'trade'  => '\\texttrademark',
  620:     8501     => '\\ensuremath{\\aleph\}',
  621:     'alefsym'=> '\\ensuremath{\\aleph\}',
  622: 
  623:     # Arrows and then some (harpoons from Hon Kie).
  624: 
  625:     8592     => '\\textleftarrow',
  626:     'larr'   => '\\textleftarrow',
  627:     8593     => '\\textuparrow',
  628:     'uarr'   => '\\textuparrow',
  629:     8594     => '\\textrightarrow',
  630:     'rarr'   => '\\textrightarrow',
  631:     8595     => '\\textdownarrow',
  632:     'darr'   => '\\textdownarrow',
  633:     8596     => '\\ensuremath\{\\leftrightarrow\}',
  634:     'harr'   => '\\ensuremath\{\\leftrightarrow\}',
  635:     8598     => '\\ensuremath\{\\nwarrow\}',
  636:     8599     => '\\ensuremath\{\\nearrow\}',
  637:     8600     => '\\ensuremath\{\\searrow\}',
  638:     8601     => '\\ensuremath\{\\swarrow\}',
  639:     8605     => '\\ensuremath\{\\leadsto\}',
  640:     8614     => '\\ensuremath\{\\mapsto\}',
  641:     8617     => '\\ensuremath\{\\hookleftarrow\}',
  642:     8618     => '\\ensuremath\{\\hookrightarrow\}',
  643:     8629     => '\\ensuremath\{\\hookleftarrow\}', # not an exact match but best I know.
  644:     'crarr'  => '\\ensuremath\{\\hookleftarrow\}', # not an exact match but best I know.
  645:     8636     => '\\ensuremath\{\\leftharpoonup\}',
  646:     8637     => '\\ensuremath\{\\leftharpoondown\}',
  647:     8640     => '\\ensuremath\{\\rightharpoonup\}',
  648:     8641     => '\\ensuremath\{\\rightharpoondown\}',
  649:     8652     => '\\ensuremath\{\\rightleftharpoons\}',
  650:     8656     => '\\ensuremath\{\\Leftarrow\}',
  651:     'lArr'   => '\\ensuremath\{\\Leftarrow\}',
  652:     8657     => '\\ensuremath\{\\Uparrow\}',
  653:     'uArr'   => '\\ensuremath\{\\Uparrow\}',
  654:     8658     => '\\ensuremath\{\\Rightarrow\}',
  655:     'rArr'   => '\\ensuremath\{\\Rightarrow\}',
  656:     8659     => '\\ensuremath\{\\Downarrow\}',
  657:     'dArr'   => '\\ensuremath\{\\Downarrow\}',
  658:     8660     => '\\ensuremath\{\\Leftrightarrow\}',
  659:     'vArr'   => '\\ensuremath\{\\Updownarrow\}',
  660:     8661     => '\\ensuremath\{\\Updownarrow\}',
  661:     'lAarr'   => '\\ensuremath\{\\Lleftarrow\}',
  662:     8666     => '\\ensuremath\{\\Lleftarrow\}',
  663:     'rAarr'  => '\\ensuremath\{\\Rrightarrow\}',
  664:     8667     => '\\ensuremath\{\\Rrightarrow\}',
  665:     'rarrw'  => '\\ensuremath\{\\rightsquigarrow\}',
  666:     8669     => '\\ensuremath\{\\rightsquigarrow\}',
  667:     
  668: 
  669:     # Mathematical operators.
  670: 	
  671:     
  672:     'forall' => '\\ensuremath\{\\forall\}',
  673:     8704     => '\\ensuremath\{\\forall\}',
  674:     'comp'   => '\\ensuremath\{\\complement\}',
  675:     8705     => '\\ensuremath\{\\complement\}',
  676:     'part'   => '\\ensuremath\{\\partial\}',
  677:     8706     => '\\ensuremath\{\\partial\}',
  678:     'exist'  => '\\ensuremath\{\\exists\}',
  679:     8707     => '\\ensuremath\{\\exists\}',
  680:     'nexist' => '\\ensuremath\{\\nexists\}',
  681:     8708     => '\\ensuremath\{\\nexists\}',
  682:     'empty'  => '\\ensuremath\{\\emptysset\}',
  683:     8709     => '\\ensuremath\{\\emptysset\}',
  684:     8710     => '\\ensuremath\{\\Delta\}',
  685:     'nabla'  => '\\ensuremath\{\\nabla\}',
  686:     8711     => '\\ensuremath\{\\nabla\}',
  687:     'isin'   => '\\ensuremath\{\\in\}',
  688:     8712     => '\\ensuremath\{\\in\}',
  689:     'notin'  => '\\ensuremath\{\\notin\}',
  690:     8713     => '\\ensuremath\{\\notin\}',
  691:     ni       => '\\ensuremath\{\\ni\}',
  692:     8715     => '\\ensuremath\{\\ni\}',
  693:     8716     => '\\ensuremath\{\\not\\ni\}',
  694:     'prod'   => '\\ensuremath\{\\prod\}',
  695:     8719     => '\\ensuremath\{\\prod\}',
  696:     8720     => '\\ensuremath\{\\coprod\}',
  697:     'sum'    => '\\ensuremath\{\\sum\}',
  698:     8721     => '\\ensuremath\{\\sum\}',
  699:     'minus'  => '\\ensuremath\{-\}',
  700:     8722     => '\\ensuremath\{-\}',
  701:     8723     => '\\ensuremath\{\\mp\}',
  702:     8724     => '\\ensuremath\{\\dotplus\}',
  703:     8725     => '\\ensuremath\{\\diagup\}',
  704:     8726     => '\\ensuremath\{\\smallsetminus\}',
  705:     'lowast' => '\\ensuremath\{*\}',
  706:     8727     => '\\ensuremath\{*\}',
  707:     8728     => '\\ensuremath\{\\circ\}',
  708:     8729     => '\\ensuremath\{\\bullet\}',
  709:     'radic'  => '\\ensuremath\{\\surd\}',
  710:     8730     => '\\ensuremath\{\\surd\}',
  711:     8731     => '\\ensuremath\{\\sqrt[3]\{\}\}',
  712:     8732     => '\\ensuremath\{\\sqrt[4]\{\}\}',
  713:     'prop'   => '\\ensuremath\{\\propto\}',
  714:     8733     => '\\ensuremath\{\\propto\}',
  715:     'infin'  => '\\ensuremath\{\\infty\}',
  716:     8734     => '\\ensuremath\{\\infty\}',
  717:     'ang90'  => '\\ensuremath\{\\sqangle\}',
  718:     8735     => '\\ensuremath\{\\sqangle\}',
  719:     'ang'    => '\\ensuremath\{\\angle\}',
  720:     8736     => '\\ensuremath\{\\angle\}',
  721:     'angmsd' => '\\ensuremath\{\\measuredangle\}',
  722:     8737     => '\\ensuremath\{\\measuredangle\}',
  723:     'angsph' => '\\ensuremath\{\\sphiericalangle\}',
  724:     8738     => '\\ensuremath\{\\sphiericalangle\}',
  725:     8739     => '\\ensuremath\{\\vert\}',
  726:     8740     => '\\ensuremath\{\\Vert\}',
  727:     'and'    => '\\ensuremath\{\\land\}',
  728:     8743     => '\\ensuremath\{\\land\}',
  729:     'or'     => '\\ensuremath\{\\lor\}',
  730:     8744     => '\\ensuremath\{\\lor\}',
  731:     'cap'    => '\\ensuremath\{\\cap\}',
  732:     8745     => '\\ensuremath\{\\cap\}',
  733:     'cup'    => '\\ensuremath\{\\cup\}',
  734:     8746     => '\\ensuremath\{\\cup\}',
  735:     'int'    => '\\ensuremath\{\\int\}',
  736:     8747     => '\\ensuremath\{\\int\}',
  737:     'conint' => '\\ensuremath\{\\oint\}',
  738:     8750     => '\\ensuremath\{\\oint\}',
  739:     'there4' => '\\ensuremath\{\\therefore\}',
  740:     8756     => '\\ensuremath\{\\therefore\}',
  741:     'becaus' => '\\ensuremath\{\\because\}',
  742:     8757     => '\\ensuremath\{\\because\}',
  743:     8758     => '\\ensuremath\{:\}',
  744:     8759     => '\\ensuremath\{::\}',
  745:     'sim'    => '\\ensuremath\{\\sim\}',
  746:     8764     => '\\ensuremath\{\\sim\}',
  747:     8765     => '\\ensuremath\{\\backsim\}',
  748:     'wreath' => '\\ensuremath\{\\wr\}',
  749:     8768     => '\\ensuremath\{\\wr\}',
  750:     'nsim'   => '\\ensuremath\{\\not\sim\}',
  751:     8769     => '\\ensuremath\{\\not\sim\}',
  752: #    'asymp'  => '\\ensuremath\{\\asymp\}',  &asymp; is actually a different glyph.
  753:     8771     => '\\ensuremath\{\\asymp\}',
  754:     8772     => '\\ensuremath\{\\not\\asymp\}',
  755:     'cong'   => '\\ensuremath\{\\cong\}',
  756:     8773     => '\\ensuremath\{\\cong\}',
  757:     8775     => '\\ensuremath\{\\ncong\}',
  758:     8778     => '\\ensuremath\{\\approxeq\}',
  759:     8784     => '\\ensuremath\{\\doteq\}',
  760:     8785     => '\\ensuremath\{\\doteqdot\}',
  761:     8786     => '\\ensuremath\{\\fallingdotseq\}',
  762:     8787     => '\\ensuremath\{\\risingdotseq\}',
  763:     8788     => '\\ensuremath\{:=\}',
  764:     8789     => '\\ensuremath\{=:\}',
  765:     8790     => '\\ensuremath\{\\eqcirc\}',
  766:     8791     => '\\ensuremath\{\\circeq\}',
  767:     'wedgeq' => '\\ensuremath\{\\stackrel\{\\wedge\}\{=\}\}',
  768:     8792     => '\\ensuremath\{\\stackrel\{\\wedge\}\{=\}\}',
  769:     8794     => '\\ensuremath\{\\stackrel\{\\vee\}\{=\}\}',
  770:     8795     => '\\ensuremath\{\\stackrel\{\\star}\{=\}\}',
  771:     8796     => '\\ensuremath\{\\triangleeq\}',
  772:     8797     => '\\ensuremath\{\\stackrel\{def\}\{=\}\}',
  773:     8798     => '\\ensuremath\{\\stackrel\{m\}\{=\}\}',
  774:     8799     => '\\ensuremath\{\\stackrel\{?\}\{=\}\}',
  775:     'ne'     => '\\ensuremath\{\\neq\}',
  776:     8800     => '\\ensuremath\{\\neq\}',
  777:     'equiv'  => '\\ensuremath\{\\equiv\}',
  778:     8801     => '\\ensuremath\{\\equiv\}',
  779:     8802     => '\\ensuremath\{\\not\\equiv\}',
  780:     'le'     => '\\ensuremath\{\\leq\}',
  781:     8804     => '\\ensuremath\{\\leq\}',
  782:     'ge'     => '\\ensuremath\{\\geq\}',
  783:     8805     => '\\ensuremath\{\\geq\}',
  784:     8806     => '\\ensuremath\{\\leqq\}',
  785:     8807     => '\\ensuremath\{\\geqq\}',
  786:     8810     => '\\ensuremath\{\\ll\}',
  787:     8811     => '\\ensuremath\{\\gg\}',
  788:     'twixt'  => '\\ensuremath\{\\between\}',
  789:     8812     => '\\ensuremath\{\\between\}',
  790:     8813     => '\\ensuremath\{\\not\\asymp\}',
  791:     8814     => '\\ensuremath\{\\not<\}',
  792:     8815     => '\\ensuremath\{\\not>\}',
  793:     8816     => '\\ensuremath\{\\not\\leqslant\}',
  794:     8817     => '\\ensuremath\{\\not\\geqslant\}',
  795:     8818     => '\\ensuremath\{\\lessim\}',
  796:     8819     => '\\ensuremath\{\\gtrsim\}',
  797:     8820     => '\\ensuremath\{\\stackrel\{<\}\{>\}\}',
  798:     8821     => '\\ensuremath\{\\stackrel\{>\}\{<\}\}',
  799:     8826     => '\\ensuremath\{\\prec\}',
  800:     8827     => '\\ensuremath\{\\succ\}',
  801:     8828     => '\\ensuremath\{\\preceq\}',
  802:     8829     => '\\ensuremath\{\\succeq\}',
  803:     8830     => '\\ensuremath\{\\not\\prec\}',
  804:     8831     => '\\ensuremath\{\\not\\succ\}',
  805:     'sub'    => '\\ensuremath\{\\subset\}',
  806:     8834     => '\\ensuremath\{\\subset\}',
  807:     'sup'    => '\\ensuremath\{\\supset\}',
  808:     8835     => '\\ensuremath\{\\supset\}',
  809:     'nsub'   => '\\ensuremath\{\\not\\subset\}',
  810:     8836     => '\\ensuremath\{\\not\\subset\}',
  811:     8837     => '\\ensuremath\{\\not\\supset\}',
  812:     'sube'   => '\\ensuremath\{\\subseteq\}',
  813:     8838     => '\\ensuremath\{\\subseteq\}',
  814:     'supe'   => '\\ensuermath\{\\supseteq\}',
  815:     8839     => '\\ensuermath\{\\supseteq\}',
  816:     8840     => '\\ensuremath\{\\nsubseteq\}',
  817:     8841     => '\\ensuremath\{\\nsupseteq\}',
  818:     8842     => '\\ensuremath\{\\subsetneq\}',
  819:     8843     => '\\ensuremath\{\\supsetneq\}',
  820:     8847     => '\\ensuremath\{\\sqsubset\}',
  821:     8848     => '\\ensuremath\{\\sqsupset\}',
  822:     8849     => '\\ensuremath\{\\sqsubseteq\}',
  823:     8850     => '\\ensuremath\{\\sqsupseteq\}',
  824:     8851     => '\\ensuremath\{\\sqcap\}',
  825:     8852     => '\\ensuremath\{\\sqcup\}',
  826:     'oplus'  => '\\ensuremath\{\\oplus\}',
  827:     8853     => '\\ensuremath\{\\oplus\}',
  828:     8854     => '\\ensuremath\{\\ominus\}',
  829:     'otimes' => '\\ensuremath\{\\otimes\}',
  830:     8855     => '\\ensuremath\{\\otimes\}',
  831:     8856     => '\\ensuremath\{\\oslash\}',
  832:     8857     => '\\ensuremath\{\\odot\}',
  833:     8858     => '\\ensuremath\{\\circledcirc\}',
  834:     8859     => '\\ensuremath\{\\circledast\}',
  835:     8861     => '\\ensuremath\{\\ominus\}', # Close enough for government work.
  836:     8862     => '\\ensuremath\{\\boxplus\}',
  837:     8863     => '\\ensuremath\{\\boxminus\}',
  838:     8864     => '\\ensuremath\{\\boxtimes\}',
  839:     8865     => '\\ensuremath\{\\boxdot\}',
  840:     
  841: 
  842:     
  843: 
  844:     
  845: };
  846: 
  847: # 
  848: #  Convert a numerical entity (that does not exist in our hash)
  849: #  to its UTF-8 equivalent representation.
  850: #  This allows us to support, to some extent, any entity for which
  851: #  dvipdf can find a gylph (given that LaTeX is now UTF-8 clean).
  852: #
  853: sub entity_to_utf8 {
  854: }
  855: 
  856: 
  857: #
  858: #  Convert an entity to the corresponding LateX if possible.
  859: #  If not possible, and the entity is numeric,
  860: #  the entity is treated like a Unicode character and converted
  861: #  to UTF-8 which should display as long as dvipdf can find the
  862: #  appropriate glyph.
  863: #
  864: sub entity_to_latex {
  865: }
  866: 

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