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/*
* This file is part of flex.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE.
*/
%{
/* The scanner expects to link to bison yylval . */
#include <stdio.h>
#include <stdlib.h>
#include "parser.h"
#include "config.h"
static char* STRDUP(char* s1);
enum yesno_t { no=0, yes=1 };
#define YY_EXTRA_TYPE enum yesno_t
%}
%option 8bit outfile="scanner.c" prefix="test"
%option reentrant bison-bridge
%option noyywrap nomain nounput noyy_top_state noyywrap nodefault warn
%option prefix="test" header="scanner.h"
%option stack
%x IN_TAG
%x DISCARD_THRU_GT
%%
#define YY_USER_INIT yyextra = no;
#define NEED_TAG_NAME yyextra
<INITIAL>{
"</" { NEED_TAG_NAME= yes; yy_push_state( IN_TAG, yyscanner); return LTSLASH;}
"<"[^[:alpha:]] { yy_push_state(DISCARD_THRU_GT,yyscanner); }
"<" { NEED_TAG_NAME= yes; yy_push_state( IN_TAG, yyscanner); return LT; }
[^<]{1,512} { yyget_lval(yyscanner)->str = STRDUP(yytext); return TEXT;}
}
<IN_TAG>{
">" { yy_pop_state( yyscanner ); return GT; }
[[:alpha:]][[:alnum:]]* {
if( NEED_TAG_NAME == yes){
NEED_TAG_NAME=no;
yylval->str = STRDUP(yytext);
return TAGNAME;
}
}
.|\r|\n { }
}
<DISCARD_THRU_GT>{
[^>]{1,512} { }
">" { yy_pop_state(yyscanner);}
}
%%
static char* STRDUP(char* s1)
{
char* s2 = (char*)malloc(strlen(s1)+1);
sprintf(s2,"%s",s1);
return s2;
}
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