#define _POSIX_C_SOURCE 200809L

#include "context.h"

#include <stdio.h>
#include <stdlib.h>

char* context_load(const char* path) {
    if (!path) {
        return NULL;
    }

    FILE* fp = fopen(path, "rb");
    if (!fp) {
        return NULL;
    }

    if (fseek(fp, 0, SEEK_END) != 0) {
        fclose(fp);
        return NULL;
    }

    long len = ftell(fp);
    if (len < 0) {
        fclose(fp);
        return NULL;
    }

    if (fseek(fp, 0, SEEK_SET) != 0) {
        fclose(fp);
        return NULL;
    }

    char* buffer = (char*)malloc((size_t)len + 1U);
    if (!buffer) {
        fclose(fp);
        return NULL;
    }

    size_t read_len = fread(buffer, 1, (size_t)len, fp);
    fclose(fp);

    if (read_len != (size_t)len) {
        free(buffer);
        return NULL;
    }

    buffer[len] = '\0';
    return buffer;
}

void context_free(char* context) {
    free(context);
}