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/* Regular expression tests.
Copyright (C) 2003-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <sys/types.h>
#include <mcheck.h>
#include <regex.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
void
frob_escapes (char *src, int pattern)
{
char *dst;
for (dst = src; *src != '\0'; dst++, src++)
{
if (*src == '\\')
{
switch (src[1])
{
case 't':
src++;
*dst = '\t';
continue;
case 'n':
src++;
*dst = '\n';
continue;
case 'r':
src++;
*dst = '\r';
continue;
case '\\':
case '^':
case '{':
case '|':
case '}':
if (!pattern)
{
src++;
*dst = *src;
continue;
}
break;
}
}
if (src != dst)
*dst = *src;
}
*dst = '\0';
}
int
main (int argc, char **argv)
{
int ret = 0, n;
char *line = NULL;
size_t line_len = 0;
ssize_t len;
FILE *f;
char *pattern, *string;
int flags = REG_EXTENDED;
int eflags = 0;
regex_t re;
regmatch_t rm[20];
mtrace ();
if (argc < 2)
{
fprintf (stderr, "Missing test filename\n");
return 1;
}
f = fopen (argv[1], "r");
if (f == NULL)
{
fprintf (stderr, "Couldn't open %s\n", argv[1]);
return 1;
}
while ((len = getline (&line, &line_len, f)) > 0)
{
char *p, *q;
int i;
if (line[len - 1] == '\n')
line[--len] = '\0';
puts (line);
if (line[0] == ';')
continue;
if (line[0] == '\0')
continue;
if (line[0] == '-')
{
if (strstr (line, "REG_BASIC"))
flags = 0;
else
flags = REG_EXTENDED;
if (strstr (line, "REG_ICASE"))
flags |= REG_ICASE;
if (strstr (line, "REG_NEWLINE"))
flags |= REG_NEWLINE;
eflags = 0;
if (strstr (line, "REG_NOTBOL"))
eflags |= REG_NOTBOL;
if (strstr (line, "REG_NOTEOL"))
eflags |= REG_NOTEOL;
continue;
}
pattern = line + strspn (line, " \t");
if (*pattern == '\0')
continue;
p = pattern + strcspn (pattern, " \t");
if (*p == '\0')
continue;
*p++ = '\0';
string = p + strspn (p, " \t");
if (*string == '\0')
continue;
if (*string == '"')
{
string++;
p = strchr (string, '"');
if (p == NULL)
continue;
*p++ = '\0';
}
else
{
p = string + strcspn (string, " \t");
if (*string == '!')
string = NULL;
else if (*p == '\0')
continue;
else
*p++ = '\0';
}
frob_escapes (pattern, 1);
if (string != NULL)
frob_escapes (string, 0);
n = regcomp (&re, pattern, flags);
if (n != 0)
{
if (string != NULL)
{
char buf[500];
regerror (n, &re, buf, sizeof (buf));
printf ("FAIL regcomp unexpectedly failed: %s\n",
buf);
ret = 1;
}
continue;
}
else if (string == NULL)
{
regfree (&re);
puts ("FAIL regcomp unpexpectedly succeeded");
ret = 1;
continue;
}
if (regexec (&re, string, 20, rm, eflags))
{
for (i = 0; i < 20; ++i)
{
rm[i].rm_so = -1;
rm[i].rm_eo = -1;
}
}
regfree (&re);
for (i = 0; i < 20 && *p != '\0'; ++i)
{
int rm_so, rm_eo;
rm_so = strtol (p, &q, 10);
if (p == q)
break;
p = q;
rm_eo = strtol (p, &q, 10);
if (p == q)
break;
p = q;
if (rm[i].rm_so != rm_so || rm[i].rm_eo != rm_eo)
{
printf ("FAIL rm[%d] %d..%d != expected %d..%d\n",
i, rm[i].rm_so, rm[i].rm_eo, rm_so, rm_eo);
ret = 1;
break;
}
}
}
free (line);
fclose (f);
return ret;
}
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