summaryrefslogtreecommitdiff
path: root/lib/memxfrm.c
diff options
context:
space:
mode:
authorManuel A. Fernandez Montecelo <manuel.montezelo@gmail.com>2016-05-27 14:35:16 +0100
committerManuel A. Fernandez Montecelo <manuel.montezelo@gmail.com>2016-05-27 14:35:16 +0100
commit3590c846d4c2febbc05b4ad6b14a06edc549e453 (patch)
treee5d38581c2f36e1cca02efedd2d85044d77f76f9 /lib/memxfrm.c
parenta9a31b1de5776a3b08a82101a4fa711294f0dd1d (diff)
Imported Upstream version 0.9.6+really0.9.6upstream/0.9.6+really0.9.6
Diffstat (limited to 'lib/memxfrm.c')
-rw-r--r--lib/memxfrm.c137
1 files changed, 0 insertions, 137 deletions
diff --git a/lib/memxfrm.c b/lib/memxfrm.c
deleted file mode 100644
index a1c6cf8a..00000000
--- a/lib/memxfrm.c
+++ /dev/null
@@ -1,137 +0,0 @@
-/* Locale dependent memory area transformation for comparison.
- Copyright (C) 2009, 2010 Free Software Foundation, Inc.
- Written by Bruno Haible <bruno@clisp.org>, 2009.
-
- This program 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 3 of the License, or
- (at your option) any later version.
-
- This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */
-
-#include <config.h>
-
-/* Specification. */
-#include "memxfrm.h"
-
-#include <errno.h>
-#include <stdlib.h>
-#include <string.h>
-
-char *
-memxfrm (char *s, size_t n, char *resultbuf, size_t *lengthp)
-{
- /* Result accumulator. */
- char *result;
- size_t length;
- size_t allocated;
-
- char orig_sentinel;
-
- /* Initial memory allocation. */
- if (resultbuf != NULL && *lengthp > 0)
- {
- result = resultbuf;
- allocated = *lengthp;
- }
- else
- {
- allocated = (n > 0 ? n : 1);
- result = (char *) malloc (allocated);
- if (result == NULL)
- goto out_of_memory_2;
- }
- length = 0;
-
- /* Add sentinel.byte. */
- orig_sentinel = s[n];
- s[n] = '\0';
-
- /* Iterate through S, transforming each NUL terminated segment.
- Accumulate the resulting transformed segments in result, separated by
- NULs. */
- {
- const char *p_end = s + n + 1;
- const char *p;
-
- p = s;
- for (;;)
- {
- /* Search next NUL byte. */
- const char *q = p + strlen (p);
-
- for (;;)
- {
- size_t k;
-
- errno = 0;
- k = strxfrm (result + length, p, allocated - length);
- if (errno != 0)
- goto fail;
- if (k >= allocated - length)
- {
- /* Grow the result buffer. */
- char *new_result;
-
- allocated = 2 * allocated;
- if (allocated < 64)
- allocated = 64;
- if (result == resultbuf)
- new_result = (char *) malloc (allocated);
- else
- new_result = (char *) realloc (result, allocated);
- if (new_result == NULL)
- goto out_of_memory_1;
- result = new_result;
- }
- else
- {
- length += k;
- break;
- }
- }
-
- p = q + 1;
- if (p == p_end)
- break;
- result[length] = '\0';
- length++;
- }
- }
-
- /* Shrink the allocated memory if possible. */
- if (result != resultbuf && (length > 0 ? length : 1) < allocated)
- {
- char *memory = (char *) realloc (result, length > 0 ? length : 1);
- if (memory != NULL)
- result = memory;
- }
-
- s[n] = orig_sentinel;
- *lengthp = length;
- return result;
-
- fail:
- {
- int saved_errno = errno;
- if (result != resultbuf)
- free (result);
- s[n] = orig_sentinel;
- errno = saved_errno;
- return NULL;
- }
-
- out_of_memory_1:
- if (result != resultbuf)
- free (result);
- s[n] = orig_sentinel;
- out_of_memory_2:
- errno = ENOMEM;
- return NULL;
-}