Function ha_sanitize_metadata

src/cli/hook_augment.c:268–309

Graph names and paths originate in the repository/index and are data, never * hook instructions. Keep valid UTF-8 sequences, collapse ASCII controls to a * space, and bound each field without splitting a multibyte sequence. */

 * hook instructions. Keep valid UTF-8 sequences, collapse ASCII controls to a
 * space, and bound each field without splitting a multibyte sequence. */
static void ha_sanitize_metadata(const char *input, char *output, size_t output_size) {
    if (!output || output_size == 0U) {
        return;
    }
    output[0] = '\0';
    if (!input) {
        return;
    }
    size_t used = 0U;
    bool previous_space = false;
    size_t input_length = strlen(input);
    for (size_t pos = 0U; pos < input_length && used + 1U < output_size;) {
        unsigned char ch = (unsigned char)input[pos];
        if (ch < 0x20U || ch == 0x7fU) {
            if (!previous_space && used > 0U) {
                output[used++] = ' ';
                previous_space = true;
            }
            pos++;
            continue;
        }
        size_t sequence =
            ha_utf8_sequence_length((const unsigned char *)input + pos, input_length - pos);
        if (sequence == 0U) {
            output[used++] = '?';
            previous_space = false;
            pos++;
            continue;
        }
        if (used + sequence >= output_size) {
            break;
        }
        memcpy(output + used, input + pos, sequence);
        used += sequence;
        pos += sequence;
        previous_space = ch == ' ';
    }
    while (used > 0U && output[used - 1U] == ' ') {
        used--;
    }
    output[used] = '\0';
}

#ifdef CBM_CLI_ENABLE_TEST_API
void cbm_hook_sanitize_metadata_for_testing(const char *input, char *output, size_t output_size) {