Function parse_git_log

src/pipeline/pass_githistory.c:110–189

/* ── git log parsing (popen "git log") ────────────────────────────── */

static int parse_git_log(const char *repo_path, commit_t **out, int *out_count) {
    *out = NULL;
    *out_count = 0;

    if (!cbm_validate_shell_path_arg(repo_path)) {
        return CBM_NOT_FOUND;
    }

    char cmd[CBM_SZ_1K];
#ifdef _WIN32
    /* cmd.exe does not recognize single quotes, and '/dev/null' is a POSIX path. */
    const char *null_dev = "NUL";
#else
    const char *null_dev = "/dev/null";
#endif
    /* git -C "<path>" works on both cmd.exe and POSIX shells. Double quotes are
     * safe here because cbm_validate_shell_arg (above) rejects ", $, `, \ and the
     * other shell metacharacters that would otherwise be active inside them. */
    snprintf(cmd, sizeof(cmd),
             "git -C \"%s\" log --name-only --pretty=format:COMMIT:%%H:%%ct "
             "--since=\"1 year ago\" --max-count=10000 2>%s",
             repo_path, null_dev);

    FILE *fp = cbm_popen(cmd, "r");
    if (!fp) {
        return CBM_NOT_FOUND;
    }

    int cap = CBM_SZ_64;
    commit_t *commits = malloc(cap * sizeof(commit_t));
    int count = 0;
    commit_t current = {0};

    char line[CBM_SZ_1K];
    while (fgets(line, sizeof(line), fp)) {
        size_t len = strlen(line);
        while (len > 0 && (line[len - SKIP_ONE] == '\n' || line[len - SKIP_ONE] == '\r')) {
            line[--len] = '\0';
        }
        if (len == 0) {
            continue;
        }

        if (strncmp(line, "COMMIT:", SLEN("COMMIT:")) == 0) {
            if (current.count > 0) {
                if (count >= cap) {
                    cap *= PAIR_LEN;
                    commits = safe_realloc(commits, cap * sizeof(commit_t));
                }
                commits[count++] = current;
                memset(&current, 0, sizeof(current));
            }
            /* Parse the unix timestamp from "COMMIT:<hash>:<unix_epoch>".
             * Older callers / stripped-down git output without %ct land on 0. */
            const char *hash_end = strchr(line + SLEN("COMMIT:"), ':');
            if (hash_end) {
                current.timestamp = strtoll(hash_end + 1, NULL, 10);
            }