Function git_file_count

src/watcher/watcher.c:776–812

Count tracked files via git ls-files */

/* Count tracked files via git ls-files */
static watcher_git_status_t git_file_count(cbm_watcher_t *w, project_state_t *state,
                                           int *count_out) {
    if (!count_out) {
        return WATCHER_GIT_SUPERVISION_FAILED;
    }
    *count_out = 0;
    const char *argv[] = {"git", "-C", state->root_path, "ls-files", "-z", NULL};
    watcher_git_output_t output;
    watcher_git_status_t status = watcher_git_run(w, state, argv, WATCHER_GIT_OUTPUT_MAX, &output);
    if (status != WATCHER_GIT_OK) {
        return status;
    }
    FILE *fp = cbm_fopen(output.path, "rb");
    if (!fp) {
        watcher_git_output_cleanup(&output);
        return WATCHER_GIT_SUPERVISION_FAILED;
    }

    /* NUL mode is unambiguous even for tracked filenames containing newlines. */
    int count = 0;
    char buf[CBM_SZ_1K];
    size_t n;
    while ((n = fread(buf, 1, sizeof(buf), fp)) > 0) {
        for (size_t i = 0; i < n; i++) {
            if (buf[i] == '\0' && count < INT_MAX) {
                count++;
            }
        }
    }
    if (ferror(fp) || fclose(fp) != 0) {
        watcher_git_output_cleanup(&output);
        return WATCHER_GIT_SUPERVISION_FAILED;
    }
    watcher_git_output_cleanup(&output);
    *count_out = count;
    return WATCHER_GIT_OK;
}

/* ── Project state lifecycle ────────────────────────────────────── */