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/* Copyright (C) 2009 Luke Shumaker
This file is part of rvs.
rvs is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your
option) any later version.
rvs 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with rvs; see the file COPYING.
If not, write to the Free Software Foundation,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <error.h>
void *xmalloc (size_t size)
{
register void *value = malloc (size);
if (value == 0)
error(EXIT_FAILURE,0,"virtual memory exhausted");
return value;
}
void *xrealloc (void *ptr, size_t size)
{
register void *value = realloc (ptr, size);
if (value == 0)
error(EXIT_FAILURE,0,"virtual memory exhausted");
return value;
}
FILE *xfopen (const char *filename, const char *opentype)
{
FILE *file = fopen(filename,opentype);
/* fopen gives NULL on failure */
if ( file == NULL ) {
error(EXIT_FAILURE,errno,"%s",filename);
}
return file;
}
DIR *xopendir (const char *dirname)
{
DIR *dir = opendir (dirname);
if (dir == NULL) {
error(EXIT_FAILURE,errno,"%s/",dirname);
}
return dir;
}
void stradds(size_t *size, char **dest, char *str)
{
if (*size > ( strlen(*dest) + strlen(str) )) {
strcat(*dest, str);
} else {
*size = strlen(*dest) + strlen(str) + 1;
char *string;
string = (char *) xrealloc (*dest, *size);
strcat(string, str);
}
}
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