scrcpy/app/src/compat.c
Romain Vimont d5f6697f3a Add (v)asprintf compatibility functions
In case they are not available on the platform.
2021-11-24 19:55:00 +01:00

54 lines
949 B
C

#include "compat.h"
#include "config.h"
#include <assert.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#ifndef HAVE_STRDUP
char *strdup(const char *s) {
size_t size = strlen(s) + 1;
char *dup = malloc(size);
if (dup) {
memcpy(dup, s, size);
}
return dup;
}
#endif
#ifndef HAVE_ASPRINTF
int asprintf(char **strp, const char *fmt, ...) {
va_list va;
va_start(va, fmt);
int ret = vasprintf(strp, fmt, va);
va_end(va);
return ret;
}
#endif
#ifndef HAVE_VASPRINTF
int vasprintf(char **strp, const char *fmt, va_list ap) {
va_list va;
va_copy(va, ap);
int len = vsnprintf(NULL, 0, fmt, va);
va_end(va);
char *str = malloc(len + 1);
if (!str) {
return -1;
}
va_copy(va, ap);
int len2 = vsnprintf(str, len + 1, fmt, va);
(void) len2;
assert(len == len2);
va_end(va);
*strp = str;
return len;
}
#endif