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/* util.c
*
* Copyright (c) 2014 Tharre
*
* This software may be modified and distributed under the terms
* of the MIT license. See the LICENSE file for details.
*/
#include <stdarg.h>
#include <stdint.h>
#include <assert.h>
#include "util.h"
#define _FILENAME "util.c"
#include "dbg.h"
void *safe_malloc_(size_t size, const char *file, unsigned line) {
assert(size > 0);
void *ptr = malloc(size);
if (!ptr)
fatal_(file, line, ERRM_MALLOC, size);
return ptr;
}
void *safe_realloc_(void *ptr, size_t size, const char *file, unsigned line) {
assert(size > 0 && ptr);
void *ptr2 = realloc(ptr, size);
if (!ptr2)
fatal_(file, line, ERRM_REALLOC, size);
return ptr2;
}
char *safe_strdup_(const char *str, const char *file, unsigned line) {
assert(str);
size_t len = strlen(str) + 1;
char *ptr = malloc(len);
if (!ptr)
fatal_(file, line, ERRM_MALLOC, len);
return memcpy(ptr, str, len);
}
/* For concating multiple strings into a single larger one. */
char *concat(size_t count, ...) {
assert(count > 0);
va_list ap, ap2;
va_start(ap, count);
va_copy(ap2, ap);
size_t i, size = 0, args_len[count];
for (i = 0; i < count; ++i) {
args_len[i] = strlen(va_arg(ap, char*));
size += args_len[i];
}
++size;
char *result = safe_malloc(size);
/* debug("Allocated %zu bytes at %p\n", size, result); */
uintptr_t offset = 0;
for (i = 0; i < count; ++i) {
strcpy(&result[offset], va_arg(ap2, char*));
offset += args_len[i];
}
va_end(ap);
va_end(ap2);
return result;
}
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