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- #include <sys/types.h>
- #include <stdio.h>
- #include "regex.h"
-
- #define BYTEWIDTH 8
-
- /* Sorry, but this is just a test file. */
- #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)
- {
- struct re_registers regs;
- size_t len = strlen (line);
- 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;
- }
-