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#include <stdio.h> // FILE *
#include <errno.h> // ESPIPE
#include <stdlib.h>
#include <string.h>
#include <stdbool.h> // true/false
#include "util.h"
void *util_loadFile(FILE *const restrict file, size_t *const restrict outsize) { // open and fully load a file
if (ftell(file) == -1L) {
if (errno != ESPIPE) {
// perror("ftell");
return NULL;
}
fputs("opening pipes isnt supported yet\n", stderr);
return NULL;
} else {
if (fseek(file, 0, SEEK_END)) {
// perror("fseek");
}
long ssize = ftell(file);
size_t size = (size_t) ssize;
if (ssize == -1L) {
// perror("ftell");
return NULL;
}
rewind(file);
void *buffer = malloc(size);
if (buffer == NULL) {
// perror("malloc");
return NULL;
}
if (fread(buffer, 1, size, file) != size) {
if (ferror(file)) {
fputs("ferror set\n", stderr); // the internet was VERY helpful
}
// perror("fread");
return NULL;
}
if (outsize != NULL) {
*outsize = size;
}
return buffer;
}
}
#if defined(__unix__) || defined(__APPLE__)
#define DIR_SEPARATOR '/' // UNIX or OSX
#elif defined(_WIN32)
#define DIR_SEPARATOR '\\' // DOS
#endif
char *util_executableRelativePath(char *path, char *execPath, size_t dirLength) { // allocated on the heap
dirLength = 0;
if (dirLength == 0) {
for (dirLength = strlen(execPath); dirLength > 0 && execPath[dirLength - 1] != DIR_SEPARATOR; dirLength--)
;
}
size_t fileLength = strlen(path);
char *filePath = malloc(dirLength + fileLength + 1);
filePath[dirLength + fileLength] = 0;
memcpy(filePath, execPath, dirLength);
memcpy(filePath + dirLength, path, fileLength);
return filePath;
}
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