1 /*
2  * This file is part of flex.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  *
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * Neither the name of the University nor the names of its contributors
15  * may be used to endorse or promote products derived from this software
16  * without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
19  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
20  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21  * PURPOSE.
22  */
23 
24 %{
25 /* The scanner expects to link to bison yylval . */
26 #include <stdio.h>
27 #include <stdlib.h>
28 #include "bison_yylval_parser.h"
29 #include "config.h"
30 static char* STRDUP(char* s1);
31 
32 enum yesno_t { no=0, yes=1 };
33 #define YY_EXTRA_TYPE  enum yesno_t
34 %}
35 
36 %option 8bit prefix="test"
37 %option reentrant bison-bridge
38 %option header="bison_yylval_scanner.h"
39 %option noyywrap nomain nounput noyy_top_state noyywrap nodefault noinput warn
40 %option stack
41 
42 
43 %x IN_TAG
44 %x DISCARD_THRU_GT
45 %%
46 
47     #define YY_USER_INIT yyextra = no;
48     #define NEED_TAG_NAME yyextra
49 
50 
51 <INITIAL>{
52 "</"       { NEED_TAG_NAME= yes; yy_push_state( IN_TAG, yyscanner); return LTSLASH;}
53 "<"[^[:alpha:]]  { yy_push_state(DISCARD_THRU_GT,yyscanner); }
54 "<"        { NEED_TAG_NAME= yes; yy_push_state( IN_TAG, yyscanner); return  LT; }
55 [^<]{1,512} { yyget_lval(yyscanner)->str = STRDUP(yytext); return TEXT;}
56 }
57 <IN_TAG>{
58 ">"  { yy_pop_state( yyscanner ); return GT; }
59 [[:alpha:]][[:alnum:]]* {
60         if( NEED_TAG_NAME == yes){
61             NEED_TAG_NAME=no;
62             yylval->str = STRDUP(yytext);
63             return TAGNAME;
64         }
65     }
66 
67 .|\r|\n { }
68 }
69 <DISCARD_THRU_GT>{
70 [^>]{1,512} { }
71 ">"        { yy_pop_state(yyscanner);}
72 }
73 %%
74 
75 
76 static char* STRDUP(char* s1)
77 {
78     char* s2 = (char*)malloc(strlen(s1)+1);
79     sprintf(s2,"%s",s1);
80     return s2;
81 }
82