static _Nt_array_ptr read_file()

in parson.c [316:348]

• 31 lines of code
• 6 McCabe index (conditional complexity)

static _Nt_array_ptr<char> read_file(_Nt_array_ptr<const char> filename) {
    _Ptr<FILE> fp = fopen(filename, "r");
    size_t size_to_read = 0;
    size_t size_read = 0;
    long pos;
    
    if (!fp) {
        return NULL;
    }
    fseek(fp, 0L, SEEK_END);
    pos = ftell(fp);
    if (pos < 0) {
        fclose(fp);
        return NULL;
    }
    size_to_read = pos;
    rewind(fp);
    // TODO: compiler isn't constant folding when checking bounds, so we need the spurious (size_t) 1 here.
    _Nt_array_ptr<char> file_contents : count((size_t) 1 * size_to_read) = parson_string_malloc((size_t) 1 * size_to_read );
    if (!file_contents) {
        fclose(fp);
        return NULL;
    }
    size_read = fread(file_contents, 1, size_to_read, fp);
    if (size_read == 0 || ferror(fp)) {
        fclose(fp);
        parson_free(char, file_contents);
        return NULL;
    }
    fclose(fp);
    file_contents[size_read] = '\0';
    return file_contents;
}