static void guac_terminal_buffer_force_break()

in src/terminal/buffer.c [270:345]

• 46 lines of code
• 17 McCabe index (conditional complexity)

static void guac_terminal_buffer_force_break(guac_terminal_buffer* buffer, int row, int edge) {

    guac_terminal_buffer_row* buffer_row = guac_terminal_buffer_get_row(buffer, row);
    if (buffer_row == NULL)
        return;

    /* Ensure character to left of edge is unbroken */
    if (edge > 0) {

        int end_column = edge - 1;
        int start_column = end_column;

        guac_terminal_char* start_char = &(buffer_row->characters[start_column]);

        /* Determine start column */
        while (start_column > 0 && start_char->value == GUAC_CHAR_CONTINUATION) {
            start_char--;
            start_column--;
        }

        /* Advance to start of broken character if necessary */
        if (start_char->value != GUAC_CHAR_CONTINUATION && start_char->width < end_column - start_column + 1) {
            start_column += start_char->width;
            start_char += start_char->width;
        }

        /* Clear character if broken */
        if (start_char->value == GUAC_CHAR_CONTINUATION || start_char->width != end_column - start_column + 1) {

            guac_terminal_char cleared_char;
            cleared_char.value = ' ';
            cleared_char.attributes = start_char->attributes;
            cleared_char.width = 1;

            guac_terminal_buffer_set_columns(buffer, row, start_column, end_column, &cleared_char);

        }

    }

    /* Ensure character to right of edge is unbroken */
    if (edge >= 0 && edge < buffer_row->length) {

        int start_column = edge;
        int end_column = start_column;

        guac_terminal_char* start_char = &(buffer_row->characters[start_column]);
        guac_terminal_char* end_char = &(buffer_row->characters[end_column]);

        /* Determine end column */
        while (end_column+1 < buffer_row->length && (end_char+1)->value == GUAC_CHAR_CONTINUATION) {
            end_char++;
            end_column++;
        }

        /* Advance to start of broken character if necessary */
        if (start_char->value != GUAC_CHAR_CONTINUATION && start_char->width < end_column - start_column + 1) {
            start_column += start_char->width;
            start_char += start_char->width;
        }

        /* Clear character if broken */
        if (start_char->value == GUAC_CHAR_CONTINUATION || start_char->width != end_column - start_column + 1) {

            guac_terminal_char cleared_char;
            cleared_char.value = ' ';
            cleared_char.attributes = start_char->attributes;
            cleared_char.width = 1;

            guac_terminal_buffer_set_columns(buffer, row, start_column, end_column, &cleared_char);

        }

    }

}