Function read_file_str

src/cli/cli.c:1281–1312

Read entire file into malloc'd buffer. Returns NULL on error. */

/* Read entire file into malloc'd buffer. Returns NULL on error. */
static char *read_file_str(const char *path, size_t *out_len) {
    FILE *f = fopen(path, "r");
    if (!f) {
        if (out_len) {
            *out_len = 0;
        }
        return NULL;
    }
    (void)fseek(f, 0, SEEK_END);
    long size = ftell(f);
    (void)fseek(f, 0, SEEK_SET);
    if (size < 0 || size > (long)CLI_MB_10 * CLI_MB_FACTOR) { /* cap at 10 MB */
        (void)fclose(f);
        return NULL;
    }

    char *buf = malloc((size_t)size + CLI_SKIP_ONE);
    if (!buf) {
        (void)fclose(f);
        return NULL;
    }
    size_t nread = fread(buf, CLI_ELEM_SIZE, (size_t)size, f);
    (void)fclose(f);
    if (nread > (size_t)size) {
        nread = (size_t)size;
    }
    buf[nread] = '\0';
    if (out_len) {
        *out_len = nread;
    }
    return buf;
}

/* Write string to file, creating parent dirs if needed. */
static int write_file_str(const char *path, const char *content) {