Function read_json_file

src/cli/cli.c:722–755

Read a JSON file into a yyjson document. Returns NULL on error. */

/* Read a JSON file into a yyjson document. Returns NULL on error. */
static yyjson_doc *read_json_file(const char *path) {
    FILE *f = fopen(path, "r");
    if (!f) {
        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) {
        (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';

    /* Allow JSONC (comments + trailing commas) — Zed settings.json uses this format */
    yyjson_read_flag flags = YYJSON_READ_ALLOW_COMMENTS | YYJSON_READ_ALLOW_TRAILING_COMMAS;
    yyjson_doc *doc = yyjson_read(buf, nread, flags);
    free(buf);
    return doc;
}

/* Write a mutable yyjson document to a file with pretty printing. */
static int write_json_file(const char *path, yyjson_mut_doc *doc) {