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#include <sys/types.h>
#include <stdio.h>
#include "regex.h"
#define BYTEWIDTH 8
/* Sorry, but this is just a test program. */
#define LINE_MAX 500
int
main (argc, argv)
int argc;
char *argv[];
{
FILE *f;
char *filename;
char pat[500]; /* Sorry for that maximum size, too. */
char line[LINE_MAX];
struct re_pattern_buffer buf;
char fastmap[(1 << BYTEWIDTH)];
const char *compile_ret;
unsigned lineno = 1;
unsigned nfound = 0;
/* Actually, it might be useful to allow the data file to be standard
input, and to specify the pattern on the command line. */
if (argc != 2)
{
fprintf (stderr, "Usage: %s <filename>.\n", argv[0]);
exit (1);
}
filename = argv[1];
f = fopen (filename, "r");
if (f == NULL)
perror (filename);
buf.allocated = 0;
buf.buffer = NULL;
buf.fastmap = fastmap;
printf ("Pattern = ", pat);
gets (pat);
if (feof (stdin))
{
putchar ('\n');
exit (0);
}
compile_ret = re_compile_pattern (pat, strlen (pat), &buf);
if (compile_ret != NULL)
{
fprintf (stderr, "%s: %s\n", pat, compile_ret);
exit (1);
}
while (fgets (line, LINE_MAX, f) != NULL)
{
size_t len = strlen (line);
struct re_registers regs;
int search_ret
= re_search_2 (&buf, NULL, 0, line, len, 0, len, ®s, len);
if (search_ret == -2)
{
fprintf (stderr, "%s:%d: re_search failed.\n", filename, lineno);
exit (1);
}
nfound += search_ret != -1;
lineno++;
}
printf ("Matches found: %u (out of %u lines).\n", nfound, lineno - 1);
return 0;
}
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