sameduck/SDL/utils.c
2017-06-16 01:25:39 +03:00

81 lines
1.7 KiB
C

#include <stdio.h>
#include <string.h>
#ifdef __APPLE__
#include <mach-o/dyld.h>
#endif
#ifdef _WIN32
#include <direct.h>
#include <windows.h>
#endif
#ifdef __linux__
#include <assert.h>
#include <unistd.h>
#endif
#include "utils.h"
const char *executable_folder(void)
{
static char path[1024] = {0,};
if (path[0]) {
return path;
}
/* Ugly unportable code! :( */
#ifdef __APPLE__
unsigned int length = sizeof(path) - 1;
_NSGetExecutablePath(&path[0], &length);
#else
#ifdef __linux__
ssize_t __attribute__((unused)) length = readlink("/proc/self/exe", &path[0], sizeof(path) - 1);
assert (length != -1);
#else
#ifdef _WIN32
HMODULE hModule = GetModuleHandle(NULL);
GetModuleFileName(hModule, path, sizeof(path) - 1);
#else
/* No OS-specific way, assume running from CWD */
getcwd(&path[0], sizeof(path) - 1);
return path;
#endif
#endif
#endif
size_t pos = strlen(path);
while (pos) {
pos--;
#ifdef _WIN32
if (path[pos] == '\\') {
#else
if (path[pos] == '/') {
#endif
path[pos] = 0;
break;
}
}
return path;
}
char *executable_relative_path(const char *filename)
{
static char path[1024];
snprintf(path, sizeof(path), "%s/%s", executable_folder(), filename);
return path;
}
void replace_extension(const char *src, size_t length, char *dest, const char *ext)
{
memcpy(dest, src, length);
dest[length] = 0;
/* Remove extension */
for (size_t i = length; i--;) {
if (dest[i] == '/') break;
if (dest[i] == '.') {
dest[i] = 0;
break;
}
}
/* Add new extension */
strcat(dest, ext);
}