mirror of
https://github.com/troglobit/editline.git
synced 2025-05-06 04:21:24 +08:00
added simple multiline support
This commit is contained in:
dvolynets
parent
13f8d5f69c
commit
d3109109c4
179
src/editline.c
179
src/editline.c
@ -113,6 +113,9 @@ static int Searching = 0;
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static const char *(*search_move)(void);
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static const char *old_prompt = NULL;
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static rl_vcpfunc_t *line_handler = NULL;
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static char *line_up = "\x1b[A";
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static char *line_down = "\x1b[B";
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int prompt_len = 0;
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int el_no_echo = 0; /* e.g., under Emacs */
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int el_no_hist = 0;
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@ -206,8 +209,12 @@ static void tty_show(unsigned char c)
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static void tty_string(char *p)
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{
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while (*p)
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int i = rl_point + prompt_len + 1;
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while (*p) {
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tty_show(*p++);
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if ((i++) % tty_cols == 0)
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tty_put('\n');
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}
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}
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static void tty_push(int c)
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@ -304,33 +311,90 @@ void el_print_columns(int ac, char **av)
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if (j + skip < ac) {
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while (++len < colwidth)
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tty_put(' ');
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}
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}
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}
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tty_puts(NEWLINE);
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}
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}
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static void reposition(void)
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static void reposition(int key)
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{
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int i;
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int i = 0;
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int len_with_prompt = prompt_len + rl_end;
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int n = len_with_prompt / tty_cols; // determine the number of lines
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tty_put('\r');
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tty_puts(rl_prompt);
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for (i = 0; i < rl_point; i++)
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if (n > 0) {
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int line;
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if (key == CTL('A') || key == CTL('E') || key == rl_kill)
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line = (prompt_len + old_point) / tty_cols; // determine num of current line
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else
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line = len_with_prompt / tty_cols;
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if (key == CTL('E')) { // move to end of line(s)
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for(int k = line; k < n; k++)
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tty_puts(line_down);
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i = rl_point - (len_with_prompt % tty_cols); // determine reminder of last line and redraw only it
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} else {
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for(int k = line; k > 0; k--) // CTRL-A, CTRL-U, insert (end, middle), remove (end, middle)
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tty_puts(line_up); // redraw characters until changed data
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tty_puts(rl_prompt);
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}
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}
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else if (n == 0) {
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tty_puts(rl_prompt);
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}
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for (i; i < rl_point; i++) {
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tty_show(rl_line_buffer[i]);
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if ((i + prompt_len + 1) % tty_cols == 0) { // move to the next line
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tty_put('\n');
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}
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}
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}
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void itoa(int val, char* buf)
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{
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int digits = 0;
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int temp = val;
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while (temp != 0) {
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temp = temp / 10;
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++digits;
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}
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*(buf+digits) = 'C';
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int i = 5; digits--;
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for(; val && i ; --i, val /= 10) {
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*(buf+digits) = "0123456789"[val % 10];
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digits--;
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}
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}
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static void move_cursor_forward(int columns)
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{
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char buf[12] = {0};
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const char* line_forward = "\x1b[";
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strcpy(buf, line_forward);
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itoa(columns, buf+2);
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tty_puts(buf);
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}
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static void left(el_status_t Change)
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{
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if (rl_point) {
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tty_back();
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if (ISMETA(rl_line_buffer[rl_point - 1])) {
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if (rl_meta_chars) {
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tty_back();
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tty_back();
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}
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} else if (ISCTL(rl_line_buffer[rl_point - 1])) {
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if ((rl_point + prompt_len) % tty_cols == 0) {
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tty_puts(line_up);
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move_cursor_forward(tty_cols);
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} else {
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tty_back();
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}
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if (ISMETA(rl_line_buffer[rl_point - 1])) {
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if (rl_meta_chars) {
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tty_back();
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tty_back();
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}
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} else if (ISCTL(rl_line_buffer[rl_point - 1])) {
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tty_back();
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}
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}
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@ -341,7 +405,10 @@ static void left(el_status_t Change)
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static void right(el_status_t Change)
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{
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tty_show(rl_line_buffer[rl_point]);
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if ((rl_point + prompt_len + 1) % tty_cols == 0)
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tty_put('\n');
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else
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tty_show(rl_line_buffer[rl_point]);
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if (Change == CSmove)
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rl_point++;
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@ -382,23 +449,23 @@ static el_status_t do_forward(el_status_t move)
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do {
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p = &rl_line_buffer[rl_point];
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/* Skip leading whitespace, like FSF Readline */
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/* Skip leading whitespace, like FSF Readline */
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for ( ; rl_point < rl_end && (p[0] == ' ' || !is_alpha_num(p[0])); rl_point++, p++) {
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if (move == CSmove)
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right(CSstay);
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}
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}
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/* Skip to end of word, if inside a word. */
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/* Skip to end of word, if inside a word. */
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for (; rl_point < rl_end && is_alpha_num(p[0]); rl_point++, p++) {
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if (move == CSmove)
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right(CSstay);
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}
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}
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/* Skip to next word, or skip leading white space if outside a word. */
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/* Skip to next word, or skip leading white space if outside a word. */
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for ( ; rl_point < rl_end && (p[0] == ' ' || !is_alpha_num(p[0])); rl_point++, p++) {
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if (move == CSmove)
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right(CSstay);
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}
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}
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if (rl_point == rl_end)
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break;
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@ -424,7 +491,7 @@ static el_status_t do_case(el_case_t type)
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end = rl_end;
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for (i = rl_point, p = &rl_line_buffer[i]; rl_point < end; p++) {
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if ((type == TOupper) || (type == TOcapitalize && rl_point == i)) {
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if ((type == TOupper) || (type == TOcapitalize && rl_point == i)) {
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if (islower(*p))
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*p = toupper(*p);
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} else if (isupper(*p)) {
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@ -460,33 +527,54 @@ static void ceol(void)
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while (rl_point < 0) {
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tty_put(' ');
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rl_point++;
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extras++;
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rl_point++;
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}
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for (i = rl_point, p = &rl_line_buffer[i]; i <= rl_end; i++, p++) {
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tty_put(' ');
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if ((i + prompt_len + 1) % tty_cols == 0){
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tty_put(' ');
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tty_put('\n');
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}
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else
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tty_put(' ');
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if (ISMETA(*p)) {
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if (rl_meta_chars) {
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tty_put(' ');
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tty_put(' ');
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extras += 2;
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}
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} else if (ISCTL(*p)) {
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if (rl_meta_chars) {
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tty_put(' ');
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tty_put(' ');
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extras += 2;
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}
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} else if (ISCTL(*p)) {
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tty_put(' ');
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extras++;
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}
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}
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for (i += extras; i > rl_point; i--)
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tty_back();
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for (i += extras; i > rl_point; i--) {
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if ((i + prompt_len) % tty_cols == 0) {
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tty_puts(line_up);
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move_cursor_forward(tty_cols);
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} else {
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tty_back();
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}
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}
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}
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static void clear_line(void)
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{
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int n = (rl_point + prompt_len) / tty_cols;
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rl_point = -(int)strlen(rl_prompt);
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tty_put('\r');
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if (n > 0) {
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for(int k = 0; k < n; k++)
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tty_puts(line_up);
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tty_put('\r');
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}
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else {
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tty_put('\r');
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}
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ceol();
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rl_point = 0;
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rl_end = 0;
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rl_line_buffer[0] = '\0';
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@ -501,7 +589,7 @@ static el_status_t insert_string(const char *p)
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len = strlen(p);
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if (rl_end + len >= Length) {
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line = malloc(sizeof(char) * (Length + len + MEM_INC));
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line = malloc(sizeof(char) * (Length + len + MEM_INC));
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if (!line)
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return CSstay;
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@ -538,14 +626,15 @@ int rl_insert_text(const char *text)
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static el_status_t redisplay(int cls)
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{
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if (cls && rl_point == 0 && rl_end == 0)
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tty_puts(CLEAR);
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if (cls)
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tty_puts(CLEAR);
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else
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tty_puts("\r\e[K");
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tty_puts("\r\e[K");
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tty_puts(rl_prompt);
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rl_point = 0;
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tty_string(rl_line_buffer);
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rl_point = rl_end;
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return CSmove;
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}
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@ -585,7 +674,7 @@ static el_status_t do_insert_hist(const char *p)
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clear_line();
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rl_point = 0;
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reposition();
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reposition(-1);
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rl_end = 0;
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return insert_string(p);
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@ -792,6 +881,7 @@ static el_status_t delete_string(int count)
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for (p = &rl_line_buffer[rl_point], i = rl_end - (rl_point + count) + 1; --i >= 0; p++)
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p[0] = p[count];
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ceol();
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rl_end -= count;
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tty_string(&rl_line_buffer[rl_point]);
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@ -832,7 +922,7 @@ static el_status_t kill_line(void)
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if (Repeat < rl_point) {
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i = rl_point;
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rl_point = Repeat;
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reposition();
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reposition(-1);
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delete_string(i - rl_point);
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} else if (Repeat > rl_point) {
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right(CSmove);
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@ -1059,8 +1149,9 @@ static el_status_t tty_special(int c)
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if (c == rl_kill) {
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if (rl_point != 0) {
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old_point = rl_point;
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rl_point = 0;
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reposition();
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reposition(c);
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}
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Repeat = NO_ARG;
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@ -1095,7 +1186,7 @@ static char *editinput(int complete)
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return (char *)"";
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case CSmove:
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reposition();
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reposition(c);
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break;
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case CSdispatch:
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@ -1110,7 +1201,7 @@ static char *editinput(int complete)
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return (char *)"";
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case CSmove:
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reposition();
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reposition(c);
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break;
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case CSdispatch:
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@ -1334,6 +1425,8 @@ static int el_prep(const char *prompt)
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return -1;
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rl_prompt = prompt ? prompt : NILSTR;
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prompt_len = strlen(rl_prompt);
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if (el_no_echo) {
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int old = el_no_echo;
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