2522c26ec8
* alignment issues on sparc * "make check" failure when stderr is not a tty * wrong program name in manpages in tarball * build failure with hurd * "make check" failure on machines with no disc drive * make distclean fixes
195 lines
3.3 KiB
C
195 lines
3.3 KiB
C
/*
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$Id: util.c,v 1.6 2008/04/22 15:29:12 karl Exp $
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Copyright (C) 2003, 2004, 2005, 2008, 2009
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Rocky Bernstein <rocky@gnu.org>
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Copyright (C) 2000 Herbert Valerio Riedel <hvr@gnu.org>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <ctype.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <limits.h>
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#ifdef HAVE_UNISTD_H // readlink
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#include <unistd.h>
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#endif
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#ifdef HAVE_INTTYPES_H
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#include "inttypes.h"
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#endif
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#include "cdio_assert.h"
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#include <cdio/types.h>
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#include <cdio/util.h>
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#ifndef PATH_MAX
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#define PATH_MAX 4096
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#endif
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static const char _rcsid[] = "$Id: util.c,v 1.6 2008/04/22 15:29:12 karl Exp $";
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size_t
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_cdio_strlenv(char **str_array)
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{
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size_t n = 0;
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cdio_assert (str_array != NULL);
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while(str_array[n])
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n++;
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return n;
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}
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void
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_cdio_strfreev(char **strv)
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{
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int n;
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cdio_assert (strv != NULL);
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for(n = 0; strv[n]; n++)
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free(strv[n]);
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free(strv);
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}
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char **
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_cdio_strsplit(const char str[], char delim) /* fixme -- non-reentrant */
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{
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int n;
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char **strv = NULL;
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char *_str, *p;
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char _delim[2] = { 0, 0 };
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cdio_assert (str != NULL);
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_str = strdup(str);
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_delim[0] = delim;
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cdio_assert (_str != NULL);
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n = 1;
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p = _str;
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while(*p)
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if (*(p++) == delim)
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n++;
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strv = calloc (1, sizeof (char *) * (n+1));
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n = 0;
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while((p = strtok(n ? NULL : _str, _delim)) != NULL)
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strv[n++] = strdup(p);
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free(_str);
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return strv;
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}
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void *
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_cdio_memdup (const void *mem, size_t count)
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{
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void *new_mem = NULL;
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if (mem)
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{
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new_mem = calloc (1, count);
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memcpy (new_mem, mem, count);
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}
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return new_mem;
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}
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char *
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_cdio_strdup_upper (const char str[])
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{
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char *new_str = NULL;
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if (str)
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{
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char *p;
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p = new_str = strdup (str);
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while (*p)
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{
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*p = toupper (*p);
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p++;
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}
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}
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return new_str;
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}
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uint8_t
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cdio_to_bcd8 (uint8_t n)
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{
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/*cdio_assert (n < 100);*/
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return ((n/10)<<4) | (n%10);
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}
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uint8_t
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cdio_from_bcd8(uint8_t p)
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{
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return (0xf & p)+(10*(p >> 4));
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}
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/*!
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Follow symlinks until we have the real device file
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(idea taken from libunieject).
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*/
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void cdio_follow_symlink (const char * src, char * dst) {
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#ifdef HAVE_READLINK
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char tmp_src[PATH_MAX+1];
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char tmp_dst[PATH_MAX+1];
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int len;
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strcpy(tmp_src, src);
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while(1) {
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len = readlink(tmp_src, tmp_dst, PATH_MAX);
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if(len < 0) {
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strncpy(dst, tmp_src, PATH_MAX);
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return;
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}
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else {
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tmp_dst[len] = '\0';
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strncpy(tmp_src, tmp_dst, PATH_MAX);
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}
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}
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#else
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strncpy(dst, src, PATH_MAX);
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#endif
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}
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/*
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* Local variables:
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* c-file-style: "gnu"
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*/
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