#include "util.h"

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

int ecex_file_exists(const char *path) {
    if (!path || !path[0]) return 0;

    FILE *file = fopen(path, "rb");
    if (!file) return 0;

    fclose(file);
    return 1;
}

char *ecex_read_entire_file(const char *path, size_t *out_size) {
    FILE *file = fopen(path, "rb");
    if (!file) return NULL;

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

    long size = ftell(file);
    if (size < 0) {
        fclose(file);
        return NULL;
    }

    rewind(file);

    char *data = malloc((size_t)size + 1);
    if (!data) {
        fclose(file);
        return NULL;
    }

    size_t read_count = fread(data, 1, (size_t)size, file);
    fclose(file);

    if (read_count != (size_t)size) {
        free(data);
        return NULL;
    }

    data[size] = '\0';

    if (out_size) {
        *out_size = (size_t)size;
    }

    return data;
}


char *ecex_strdup(const char *s) {
    if (!s) return NULL;

    size_t len = 0;
    while (s[len]) len++;

    char *out = malloc(len + 1);
    if (!out) return NULL;

    for (size_t i = 0; i <= len; i++) {
        out[i] = s[i];
    }

    return out;
}