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/*
* Created by yuuta on 7/19/22.
*/
#include "win32.h"
#include "helpers.h"
#include "log.h"
#include "common.h"
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <stdio.h>
#ifdef _WIN32
#include <windows.h>
#endif
int alloc(void *existing,
unsigned int count,
unsigned int bytes,
bool zero_out,
void **out) {
const unsigned int size = count * bytes;
void *ptr;
if (!(ptr = realloc(existing, size))) {
const int e = errno;
LOGEV("Cannot %sallocate %d bytes of memory: %s (%d).",
existing ? "re" : "",
size,
strerror2(e),
e);
return AC_E_MEMORY_ALLOCATION;
}
if (!existing && zero_out) {
memset(ptr, 0, size);
}
*out = ptr;
return AC_E_OK;
}
int strdup2(const char *str, char **out) {
char *str2;
if (!(str2 = strdup(str))) {
const int e = errno;
LOGEV("Cannot duplicate string '%s': %s (%d).",
str,
strerror2(e),
e);
return AC_E_MEMORY_ALLOCATION;
}
*out = str2;
return AC_E_OK;
}
#ifdef _WIN32
static _Thread_local LPTSTR err_buf = NULL;
#else
static _Thread_local char err_buf[1024];
#endif
char *strerror2(int errnum) {
#ifdef _WIN32
if (err_buf) {
LocalFree(err_buf);
err_buf = NULL;
}
FormatMessage(
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
errnum,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPTSTR) &err_buf,
0,
NULL);
if (!err_buf) {
return "Unknown error";
}
#else
int r;
if ((r = strerror_r(errnum, err_buf, sizeof(err_buf) / sizeof(char)))) {
snprintf(err_buf, 1024, "%d (%d)", errnum, r);
}
#endif
return err_buf;
}
void helpers_cleanup(void) {
#ifdef _WIN32
if (err_buf) {
LocalFree(err_buf);
err_buf = NULL;
}
#endif
}
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