char* file_GetAbsolutePathFromRelativePath(const char* path) {
// cancel for absolute paths
if (!file_IsPathRelative(path)) {
return strdup(path);
}
// cut off unrequired clutter
while (path[0] == '.' && path[1] == file_NativeSlash()) {
path += 2;
}
// get current working directory
char* currentdir = file_GetCwd();
if (!currentdir) {
return NULL;
}
// process ../
while (path[0] == '.' && path[1] == '.' && path[2] == file_NativeSlash()) {
file_CutOffOneElement(currentdir);
path += 3;
}
// allocate space for new path
char* newdir = malloc(strlen(currentdir) + 1 + strlen(path) + 1);
if (!newdir) {
free(currentdir);
return NULL;
}
// assemble new path
memcpy(newdir, currentdir, strlen(currentdir));
char slash = file_NativeSlash();
newdir[strlen(currentdir)] = slash;
memcpy(newdir + strlen(currentdir) + 1, path, strlen(path));
newdir[strlen(currentdir) + 1 + strlen(path)] = 0;
free(currentdir);
return newdir;
}
/// Get an absolute path to the current working directory
// (sometimes(!) this is where the blitwizard binary is located
// - but not necessarily)
// @function getcwd
// @treturn string absolute directory path
int luafuncs_getcwd(lua_State* l) {
char* p = file_GetCwd();
lua_pushstring(l, p),
free(p);
return 1;
}