src/utils.c


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

char *
read_file_contents(char *file_path)
{
    FILE *file;
    int file_size;

    file = fopen(file_path, "r");
    if (file == NULL) {
        perror("fopen");
        return NULL;
    }

    if (fseek(file, 0, SEEK_END) == -1) {
        perror("fseek SEEK_END");
        fclose(file);
        return NULL;
    }

    if ((file_size = ftell(file)) == -1) {
        perror("ftell");
        fclose(file);
        return NULL;
    }

    if (fseek(file, 0, SEEK_SET) == -1) {
        perror("fseek 0 SEEK_SET");
        fclose(file);
        return NULL;
    }

    char *file_content = (char *)calloc(file_size + 1, sizeof(char));
    if (file_content == NULL) {
        fprintf(stderr, "Could not allocate mem for file_content\n");
        fclose(file);
        return NULL;
    }

    size_t ret = fread(file_content, sizeof(char), file_size, file);
    if (ret == 0 && ferror(file) != 0) {
        perror("fread");
        free(file_content);
        fclose(file);
        return NULL;
    }

    fclose(file);

    return file_content;
}