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#include <filesystem.h>
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
size_t get_file_size(FILE* file) {
assert(file);
const long int starting_pos = ftell(file);
if (starting_pos == -1) {
return (size_t)-1;
}
if (fseek(file, 0, SEEK_END) != 0) {
return (size_t)-1;
}
const size_t file_size = ftell(file);
if (file_size == (size_t)-1) {
return (size_t)-1;
}
if (fseek(file, starting_pos, SEEK_SET) != 0) {
return (size_t)-1;
}
return file_size;
}
void* read_file(const char* filepath) {
assert(filepath);
void* data = 0;
FILE* file = fopen(filepath, "rb");
if (!file) {
return 0;
}
const size_t file_size = get_file_size(file);
if (file_size == (size_t)-1) {
goto cleanup;
}
data = calloc(1, file_size);
if (!data) {
goto cleanup;
}
if (fread(data, 1, file_size, file) != file_size) {
goto cleanup;
}
return data;
cleanup:
fclose(file);
if (data) {
free(data);
}
return 0;
}
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