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latex2html.l
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latex2html.l
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%{ /* ISI@CAL */
#include "y.tab.h"
#include<stdio.h>
#include<string.h>
int intext = 0, incomment = 0, inmath = 0, inlist=0, inbib=0;
%}
ws [ \t]+
integer [0-9]+
letters [a-zA-Z]
punc (\.|\,|\!|\?|\:|\;|"'")
sword ("\\"[a-zA-Z]+|"\\"[a-zA-Z*]+)
special (\_|"\&"|"\$"|"\#"|"@")
operator ("+"|"-"|"=")
greek ("\\alpha"|"\\beta"|"\\gamma"|"\\delta"|"\\epsilon"|"\\zeta"|"\\eta"|"\\theta"|"\\iota"|"\\kappa"|"\\lambda"|"\\mu"|"\\nu"|"\\xi"|"\\omicron"|"\\pi"|"\\rho"|"\\sigma"|"\\tau"|"\\upsilon"|"\\phi"|"\\psi"|"\\omega"|"\\Alpha"|"\\Beta"|"\\Gamma"|"\\Delta"|"\\Epsilon"|"\\Zeta"|"\\Eta"|"\\Theta"|"\\Iota"|"\\Kappa"|"\\Lambda"|"\\Mu"|"\\Nu"|"\\Xi"|"\\Omicron"|"\\Pi"|"\\Rho"|"\\Sigma"|"\\Tau"|"\\Upsilon"|"\\Phi"|"\\Psi"|"\\Omega"|"\\int"|"\\inf"|"\\exp"|"\\cup")
word (({punc}|[a-zA-Z0-9]|{greek})+|"("|")")
%%
"\\\\" {if(incomment==1); else{printf(" %s \n", yytext);; return(DBLBS);}}
"\\" {printf(" %s ", yytext);; return(BACKSL);}
"{" {printf(" %s ", yytext);;return(LCURLYB);}
"}" {printf(" %s ", yytext);;return(RCURLYB);}
"\\ " {}
"\\documentclass" {printf(" %s ", yytext);; return(DOCUMENTCLASS);}
"article" {printf(" %s ", yytext);; return(ARTICLE);}
"proc" {printf(" %s ", yytext);; return(PROC);}
"letter" {printf(" %s ", yytext);; return(LETTER);}
"\\title" {printf(" %s ", yytext);; return(TITLE);}
"\\date" {printf(" %s ",yytext);; return(DATE);}
"\\author" {printf(" %s ",yytext);; return(AUTHOR);}
"\\langle" { printf(" %s ",yytext);; if(inmath==1) return (LANGLE);else return(WORD);}
"\\rangle" { printf(" %s ",yytext);; if(inmath==1) return (RANGLE);else return(WORD);}
"\\%" { if(inmath==1) return (OPERATOR);else{printf(" %s ",yytext);yytext="%";return(WORD);}}
"|" {printf(" %s ", yytext);; return(PIPE);}
"&" {printf(" %s ", yytext);; return(AMPERSAND);}
"$" {printf(" %s ", yytext);; if(inmath == 0) inmath = 1;else inmath= 0; return(DOLLARMATH);}
"^" {printf(" %s ", yytext);; return(SUPERSCRIPT);}
"_" {printf(" %s ", yytext);; return(SUBSCRIPT);}
{special} {printf(" %s ", yytext);; return(WORD);}
{operator} {printf(" %s ", yytext);;yylval.arr = strdup(yytext); if(inmath == 1) return(OPERATOR); else return(WORD);}
"[" {printf(" %s ", yytext);; return(LSQRB);}
"]" {printf(" %s ", yytext);; return(RSQRB);}
"\\begin{math}" {printf(" %s ", yytext);; inmath = 1; return(DOLLARMATH);}
"\\end{math}" {printf(" %s ", yytext);; inmath = 0; return(DOLLARMATH);}
"\\begin{enumerate}" {printf(" %s ", yytext);;inlist++; return(STARTLIST);}
"\\end{enumerate}" {printf(" %s ", yytext);; inlist--; return(ENDLIST);}
"\\begin{list1}" {printf(" %s ", yytext);;inlist++; return(STARTLIST);}
"\\end{list1}" {printf(" %s ", yytext);; inlist--; return(ENDLIST);}
"\\begin{list2}" {printf(" %s ", yytext);;inlist++; return(STARTLIST);}
"\\end{list2}" {printf(" %s ", yytext);; inlist--; return(ENDLIST);}
"\\begin{thebibliography}" {printf(" %s ", yytext);;inbib=1; return(STARTBIB);}
"\\end{thebibliography}" {printf(" %s ", yytext);;inbib=0; return(ENDBIB);}
"\\item" {printf(" %s ", yytext);;if(inlist>0) return(ITEM);else return(SWORD);}
"\\item[]" {printf(" %s ", yytext);;if(inlist>0) return(ITEM);else return(SWORD);}
"\\bibitem" {printf(" %s ", yytext);;if(inbib==1) return(BIBITEM);else return(SWORD);}
"\\begin{document}" {printf(" %s ", yytext);; intext = 1;return(LBEGINDOCU);}
"\\end{document}" {printf(" %s ", yytext);; intext = 0;return(LENDDOCU);}
"\\section" {printf(" %s ", yytext);; intext = 1;return(SECTION);}
"\\begin{table}" {printf(" %s ", yytext);; intext = 1;return(BEGINTABLE);}
"\\end{table}" {printf(" %s ", yytext);; intext = 0;return(ENDTABLE);}
"\\begin{tabular}" {printf(" %s ", yytext);; intext = 1;return(BEGINTABULAR);}
"\\end{tabular}" {printf(" %s ", yytext);;return(ENDTABULAR);}
"\\textbf" {printf(" %s ", yytext);; return(BOLDFACE);}
"\\bf" {printf(" %s ", yytext);; return(BOLDFACE);}
"\\textit" {printf(" %s ", yytext);; return(ITALICS);}
"\\em" {printf(" %s ", yytext);; return(ITALICS);}
"\\emph" {printf(" %s ", yytext);; return(ITALICS);}
"\\param" {printf(" %s ", yytext);; return(ITALICS);}
"\\hspace" {printf(" %s ", yytext);; return(HSPACE);}
"\\hline" {printf(" %s ", yytext);; return(HLINE);}
"b" {printf(" %s ", yytext);; if(inmath == 0) return(B); else {yylval.arr = strdup(yytext); return(LETTERS);}}
"c" {printf(" %s ", yytext);; if(inmath == 0) return(C); else {yylval.arr = strdup(yytext); return(LETTERS);}}
"h" {printf(" %s ", yytext);; if(inmath == 0) return(H); else {yylval.arr = strdup(yytext); return(LETTERS);}}
"l" {printf(" %s ", yytext);; if(inmath == 0) return(L); else {yylval.arr = strdup(yytext); return(LETTERS);}}
"r" {printf(" %s ", yytext);; if(inmath == 0) return(R); else {yylval.arr = strdup(yytext); return(LETTERS);}}
"t" {printf(" %s ", yytext);; if(inmath == 0) return(T); else {yylval.arr = strdup(yytext); return(LETTERS);}}
"\\frac" {printf(" %s ", yytext);; return(FRAC);}
"\\sqrt" {printf(" %s ", yytext);; return(SQRT);}
"\\infty" {printf(" %s ", yytext);; if(inmath == 1){ yytext="&inf"; yylval.arr = strdup(yytext);return(GREEK);}else{ yylval.arr = strdup(yytext); return(LETTERS);}}
{greek} {printf(" %s ", yytext);; if(inmath == 1){ yytext[0]='&'; yylval.arr = strdup(yytext);return(GREEK);}else{ yylval.arr = strdup(yytext); return(LETTERS);}}
{letters} {printf(" %s ", yytext);; if(inmath == 1) {yylval.arr = strdup(yytext); return(LETTERS);}else{yylval.arr = strdup(yytext); return(WORD);}}
{integer} {printf(" %s ", yytext);; /* if(incomment == 0) */ yylval.val = atoi(yytext); return(INTEGER);}
{word} {printf(" %s ", yytext);; yylval.arr = strdup(yytext); if(inmath == 1) return(LETTERS); else return(WORD); }
{ws} {/* printf(" %s ", yytext);; return(WS); */}
"\\n" {}
{sword} {printf(" %s",yytext);; yytext=" ";return(SWORD);}
. {printf("Cannot Parse. \n");;}
%%