glibc/posix/tst-regex.c

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/* Copyright (C) 2001 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <spawn.h>
#include "spawn_int.h"
#include <assert.h>
#include <errno.h>
#include <error.h>
#include <fcntl.h>
#include <iconv.h>
#include <locale.h>
#include <mcheck.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <regex.h>
#ifdef _POSIX_CPUTIME
static clockid_t cl;
static int use_clock;
#endif
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static iconv_t cd;
static char *mem;
static char *umem;
static size_t memlen;
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static int test_expr (const char *expr, int expected);
static int run_test (const char *expr, const char *mem, size_t memlen,
int expected);
int
main (void)
{
const char *file;
int fd;
struct stat st;
int result;
char *inmem;
char *outmem;
size_t inlen;
size_t outlen;
mtrace ();
/* Make the content of the file available in memory. */
file = "../ChangeLog.8";
fd = open (file, O_RDONLY);
if (fd == -1)
error (EXIT_FAILURE, errno, "cannot open %s", basename (file));
if (fstat (fd, &st) != 0)
error (EXIT_FAILURE, errno, "cannot stat %s", basename (file));
memlen = st.st_size;
mem = (char *) malloc (memlen + 1);
if (mem == NULL)
error (EXIT_FAILURE, errno, "while allocating buffer");
if (read (fd, mem, memlen) != memlen)
error (EXIT_FAILURE, 0, "cannot read entire file");
mem[memlen] = '\0';
close (fd);
/* We have to convert a few things from Latin-1 to UTF-8. */
cd = iconv_open ("UTF-8", "ISO-8859-1");
if (cd == (iconv_t) -1)
error (EXIT_FAILURE, errno, "cannot get conversion descriptor");
/* For the second test we have to convert the file content to UTF-8.
Since the text is mostly ASCII it should be enough to allocate
twice as much memory for the UTF-8 text than for the Latin-1
text. */
umem = (char *) calloc (2, memlen);
if (umem == NULL)
error (EXIT_FAILURE, errno, "while allocating buffer");
inmem = mem;
inlen = memlen;
outmem = umem;
outlen = 2 * memlen - 1;
iconv (cd, &inmem, &inlen, &outmem, &outlen);
if (inlen != 0)
error (EXIT_FAILURE, errno, "cannot convert buffer");
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#ifdef _POSIX_CPUTIME
/* See whether we can use the CPU clock. */
use_clock = clock_getcpuclockid (0, &cl) == 0;
#endif
#ifdef DEBUG
re_set_syntax (RE_DEBUG);
#endif
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/* Run the actual tests. All tests are run in a single-byte and a
multi-byte locale. */
result = test_expr ("[<5B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>]", 2);
result |= test_expr ("G.ran", 2);
result |= test_expr ("G.\\{1\\}ran", 2);
result |= test_expr ("G.*ran", 3);
result |= test_expr ("[<5B><><EFBFBD><EFBFBD>]", 0);
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/* Free the resources. */
free (umem);
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iconv_close (cd);
free (mem);
return result;
}
static int
test_expr (const char *expr, int expected)
{
int result;
char *inmem;
char *outmem;
size_t inlen;
size_t outlen;
char *uexpr;
/* First test: search with an ISO-8859-1 locale. */
if (setlocale (LC_ALL, "de_DE.ISO-8859-1") == NULL)
error (EXIT_FAILURE, 0, "cannot set locale de_DE.ISO-8859-1");
printf ("\nTest \"%s\" with 8-bit locale\n", expr);
result = run_test (expr, mem, memlen, expected);
/* Second test: search with an UTF-8 locale. */
if (setlocale (LC_ALL, "de_DE.UTF-8") == NULL)
error (EXIT_FAILURE, 0, "cannot set locale de_DE.UTF-8");
inmem = (char *) expr;
inlen = strlen (expr);
outlen = inlen * MB_CUR_MAX;
outmem = uexpr = alloca (outlen + 1);
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memset (outmem, '\0', outlen + 1);
iconv (cd, &inmem, &inlen, &outmem, &outlen);
if (inlen != 0)
error (EXIT_FAILURE, errno, "cannot convert expression");
/* Run the tests. */
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printf ("\nTest \"%s\" with multi-byte locale\n", expr);
result |= run_test (uexpr, umem, 2 * memlen - outlen, expected);
return result;
}
static int
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run_test (const char *expr, const char *mem, size_t memlen, int expected)
{
#ifdef _POSIX_CPUTIME
struct timespec start;
struct timespec finish;
#endif
regex_t re;
int err;
size_t offset;
int cnt;
#ifdef _POSIX_CPUTIME
if (use_clock)
use_clock = clock_gettime (cl, &start) == 0;
#endif
err = regcomp (&re, expr, REG_NEWLINE);
if (err != REG_NOERROR)
{
char buf[200];
regerror (err, &re, buf, sizeof buf);
error (EXIT_FAILURE, 0, "cannot compile expression: %s", buf);
}
cnt = 0;
offset = 0;
assert (mem[memlen] == '\0');
while (offset < memlen)
{
regmatch_t ma[1];
const char *sp;
const char *ep;
err = regexec (&re, mem + offset, 1, ma, 0);
if (err == REG_NOMATCH)
break;
if (err != REG_NOERROR)
{
char buf[200];
regerror (err, &re, buf, sizeof buf);
error (EXIT_FAILURE, 0, "cannot use expression: %s", buf);
}
assert (ma[0].rm_so >= 0);
sp = mem + offset + ma[0].rm_so;
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while (sp > mem && sp[-1] != '\n')
--sp;
ep = mem + offset + ma[0].rm_so;
while (*ep != '\0' && *ep != '\n')
++ep;
printf ("match %d: \"%.*s\"\n", ++cnt, (int) (ep - sp), sp);
offset = ep + 1 - mem;
}
regfree (&re);
#ifdef _POSIX_CPUTIME
if (use_clock)
{
use_clock = clock_gettime (cl, &finish) == 0;
if (use_clock)
{
if (finish.tv_nsec < start.tv_nsec)
{
finish.tv_nsec -= start.tv_nsec - 1000000000;
finish.tv_sec -= 1 + start.tv_sec;
}
else
{
finish.tv_nsec -= start.tv_nsec;
finish.tv_sec -= start.tv_sec;
}
printf ("elapsed time: %ld.%09ld sec\n",
finish.tv_sec, finish.tv_nsec);
}
}
#endif
/* Return an error if the number of matches found is not match we
expect. */
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return cnt != expected;
}