Function positionToColAndRow

tools/shell/linenoise.cpp:2143–2167

}

void positionToColAndRow(size_t target_pos, int& out_row, int& out_col, size_t& rows, size_t& cols,
    struct linenoiseState* l) {
    int plen = linenoiseComputeRenderWidth(l->prompt, strlen(l->prompt));
    out_row = -1;
    out_col = 0;
    rows = 1;
    cols = plen;
    size_t cpos = 0;
    while (cpos < l->len) {
        if (cols >= l->cols && !isNewline(l->buf[cpos])) {
            // exceeded width - move to next line
            rows++;
            cols = 0;
        }
        if (out_row < 0 && cpos >= target_pos) {
            out_row = rows;
            out_col = cols;
        }
        nextPosition(l->buf, l->len, cpos, rows, cols, plen, l->cols);
    }
    if (target_pos == l->len) {
        out_row = rows;
        out_col = cols;
    }
}

size_t colAndRowToPosition(size_t target_row, size_t target_col, struct linenoiseState* l) {
    int plen = linenoiseComputeRenderWidth(l->prompt, strlen(l->prompt));