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/* A scanner file to build "scanner.c".
26   Input language is any text.
27   "#include <filename>" causes a buffer switch.
28 */
29#include <stdio.h>
30#include <stdlib.h>
31#include "config.h"
32
33int error = 0;
34%}
35
36%option 8bit prefix="test"
37%option nounput nomain noyywrap noinput
38%option warn
39
40%x GET_FILENAME
41
42%%
43
44<INITIAL>{
45^"#include"[[:blank:]]+"<"  { BEGIN(GET_FILENAME); }
46.|\n      { ECHO; }
47}
48
49<GET_FILENAME>{
50[[:alnum:]_.-]+>  {
51     /* recurse */
52    yytext[yyleng-1]='\0';
53    if((yyin=fopen(yytext,"r"))==NULL) {
54        fprintf(stderr,"*** Error: Could not open include file \"%s\".\n",yytext);
55        error = 1;
56        yyterminate();
57    }
58    testpush_buffer_state( yy_create_buffer( yyin, YY_BUF_SIZE ));
59    BEGIN(0);
60    }
61.|\n  {
62    fprintf(stderr,"Invalid input \"%s\".\n", yytext);
63        error = 1;
64    yyterminate();
65   }
66}
67
68<<EOF>> {
69           fclose(yyin);
70           testpop_buffer_state();
71           if(!YY_CURRENT_BUFFER)
72               yyterminate();
73        }
74
75%%
76
77int main(int argc, char** argv);
78
79int
80main ( int argc, char** argv )
81{
82    FILE * fp;
83    if( argc != 2 ) {
84        fprintf(stderr,"*** Error: Must specify one filename.\n");
85        exit(-1);
86    }
87    if((fp=fopen(argv[1],"r"))==NULL) {
88        fprintf(stderr,"*** Error: fopen(%s) failed.\n",argv[1]);
89        exit(-1);
90    }
91    yyin = fp;
92    yyout = stdout;
93    yylex();
94    if (!error)
95        printf("TEST RETURNING OK.\n");
96    else
97        exit(-1);
98    return 0;
99}
100