Function arch_languages

src/store/store.c:3648–3723

/* ── Architecture aspect implementations ───────────────────────── */

static int arch_languages(cbm_store_t *s, const char *project, const char *path,
                          cbm_architecture_info_t *out) {
    char norm[CBM_SZ_512];
    char like[CBM_SZ_512];
    bool scoped = arch_path_prepare(path, norm, sizeof(norm), like, sizeof(like));
    char sqlbuf[ST_SQL_BUF];
    const char *base = "SELECT file_path FROM nodes WHERE project=?1 AND label='File'";
    if (scoped) {
        snprintf(sqlbuf, sizeof(sqlbuf), "%s%s", base, arch_path_scope_sql());
    } else {
        snprintf(sqlbuf, sizeof(sqlbuf), "%s", base);
    }
    sqlite3_stmt *stmt = NULL;
    if (sqlite3_prepare_v2(s->db, sqlbuf, CBM_NOT_FOUND, &stmt, NULL) != SQLITE_OK) {
        store_set_error_sqlite(s, "arch_languages");
        return CBM_STORE_ERR;
    }
    bind_text(stmt, SKIP_ONE, project);
    if (scoped) {
        arch_bind_path_scope(stmt, ST_COL_2, ST_COL_3, norm, like);
    }

    /* Count per language using a simple parallel array */
    const char *lang_names[CBM_SZ_64];
    int lang_counts[CBM_SZ_64];
    int nlang = 0;

    while (sqlite3_step(stmt) == SQLITE_ROW) {
        const char *fp = (const char *)sqlite3_column_text(stmt, 0);
        const char *ext = file_ext(fp);
        const char *lang = ext_to_lang(ext);
        if (!lang) {
            continue;
        }
        int found = ST_FOUND;
        for (int i = 0; i < nlang; i++) {
            if (strcmp(lang_names[i], lang) == 0) {
                found = i;
                break;
            }
        }
        if (found >= 0) {
            lang_counts[found]++;
        } else if (nlang < CBM_SZ_64) {
            lang_names[nlang] = lang;
            lang_counts[nlang] = SKIP_ONE;
            nlang++;
        }
    }
    sqlite3_finalize(stmt);

    /* Sort by count descending (simple insertion sort) */
    for (int i = SKIP_ONE; i < nlang; i++) {
        int j = i;
        while (j > 0 && lang_counts[j] > lang_counts[j - SKIP_ONE]) {
            int tc = lang_counts[j];
            lang_counts[j] = lang_counts[j - SKIP_ONE];
            lang_counts[j - SKIP_ONE] = tc;