2 term-terminfo.c : irssi
4 Copyright (C) 2001 Timo Sirainen
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 #include "terminfo-core.h"
29 /* returns number of characters in the beginning of the buffer being a
30 a single character, or -1 if more input is needed. The character will be
32 typedef int (*TERM_INPUT_FUNC)(const unsigned char *buffer, int size,
36 /* Terminal to use for window */
39 /* Area for window in terminal */
44 TERM_WINDOW *root_window;
46 static char *term_lines_empty; /* 1 if line is entirely empty */
47 static int vcmove, vcx, vcy, curs_visible;
48 static int crealx, crealy, cforcemove;
49 static int curs_x, curs_y;
50 static int auto_detach;
52 static int last_fg, last_bg, last_attrs;
54 static int redraw_needed, redraw_tag;
55 static int freeze_counter;
57 static TERM_INPUT_FUNC input_func;
58 static unsigned char term_inbuf[256];
59 static int term_inbuf_pos;
62 static void sig_cont(int p)
65 terminfo_cont(current_term);
68 static int redraw_timeout(void)
72 redraw_needed = FALSE;
82 last_fg = last_bg = -1;
84 vcx = vcy = 0; crealx = crealy = -1;
85 vcmove = FALSE; cforcemove = TRUE;
88 current_term = terminfo_core_init(stdin, stdout);
89 if (current_term == NULL)
92 /* grab CONT signal */
93 sigemptyset(&act.sa_mask);
95 act.sa_handler = sig_cont;
96 sigaction(SIGCONT, &act, NULL);
97 redraw_tag = g_timeout_add(500, (GSourceFunc) redraw_timeout, NULL);
100 term_width = current_term->width;
101 term_height = current_term->height;
102 root_window = term_window_create(0, 0, term_width, term_height);
103 term_detached = FALSE;
105 term_lines_empty = g_new0(char, term_height);
107 term_set_input_type(TERM_TYPE_8BIT);
109 g_atexit(term_deinit);
113 void term_deinit(void)
115 if (current_term != NULL) {
116 g_source_remove(redraw_tag);
118 term_common_deinit();
119 terminfo_core_deinit(current_term);
124 static void term_move_real(void)
126 if (term_detached) return;
128 if (vcx != crealx || vcy != crealy || cforcemove) {
130 terminfo_set_cursor_visible(FALSE);
131 curs_visible = FALSE;
135 crealx = crealy = -1;
138 terminfo_move_relative(crealx, crealy, vcx, vcy);
139 crealx = vcx; crealy = vcy;
145 /* Cursor position is unknown - move it immediately to known position */
146 static void term_move_reset(int x, int y)
148 if (x >= term_width) x = term_width-1;
149 if (y >= term_height) y = term_height-1;
156 /* Resize terminal - if width or height is negative,
157 the new size is unknown and should be figured out somehow */
158 void term_resize(int width, int height)
160 if (width < 0 || height < 0) {
161 terminfo_resize(current_term);
162 width = current_term->width;
163 height = current_term->height;
166 if (term_width != width || term_height != height) {
167 term_width = current_term->width = width;
168 term_height = current_term->height = height;
169 term_window_move(root_window, 0, 0, term_width, term_height);
171 g_free(term_lines_empty);
172 term_lines_empty = g_new0(char, term_height);
175 term_move_reset(0, 0);
178 void term_resize_final(int width, int height)
182 /* Returns TRUE if terminal has colors */
183 int term_has_colors(void)
185 return current_term->has_colors;
188 /* Force the colors on any way you can */
189 void term_force_colors(int set)
191 if (term_detached) return;
193 terminfo_setup_colors(current_term, set);
197 void term_clear(void)
199 if (term_detached) return;
201 term_set_color(root_window, ATTR_RESET);
203 term_move_reset(0, 0);
205 memset(term_lines_empty, 1, term_height);
211 if (term_detached) return;
213 terminfo_beep(current_term);
216 /* Create a new window in terminal */
217 TERM_WINDOW *term_window_create(int x, int y, int width, int height)
221 window = g_new0(TERM_WINDOW, 1);
222 window->term = current_term;
223 window->x = x; window->y = y;
224 window->width = width; window->height = height;
228 /* Destroy a terminal window */
229 void term_window_destroy(TERM_WINDOW *window)
234 /* Move/resize a window */
235 void term_window_move(TERM_WINDOW *window, int x, int y,
236 int width, int height)
240 window->width = width;
241 window->height = height;
245 void term_window_clear(TERM_WINDOW *window)
249 if (term_detached) return;
251 terminfo_set_normal();
252 if (window->y == 0 && window->height == term_height) {
255 for (y = 0; y < window->height; y++) {
256 term_move(window, 0, y);
257 term_clrtoeol(window);
262 /* Scroll window up/down */
263 void term_window_scroll(TERM_WINDOW *window, int count)
267 if (term_detached) return;
269 terminfo_scroll(window->y, window->y+window->height-1, count);
270 term_move_reset(vcx, vcy);
272 /* set the newly scrolled area dirty */
273 for (y = 0; y < window->height; y++)
274 term_lines_empty[window->y+y] = FALSE;
277 /* Change active color */
278 void term_set_color(TERM_WINDOW *window, int col)
282 if (term_detached) return;
284 set_normal = ((col & ATTR_RESETFG) && last_fg != -1) ||
285 ((col & ATTR_RESETBG) && last_bg != -1);
286 if (((last_attrs & ATTR_BOLD) && (col & ATTR_BOLD) == 0) ||
287 ((last_attrs & ATTR_BLINK) && (col & ATTR_BLINK) == 0)) {
288 /* we'll need to get rid of bold/blink - this can only be
289 done with setting the default color */
294 last_fg = last_bg = -1;
296 terminfo_set_normal();
299 if (!term_use_colors && (col & 0xf0) != 0)
302 /* reversed text (use standout) */
303 if (col & ATTR_REVERSE) {
304 if ((last_attrs & ATTR_REVERSE) == 0)
305 terminfo_set_standout(TRUE);
306 } else if (last_attrs & ATTR_REVERSE)
307 terminfo_set_standout(FALSE);
309 /* set foreground color */
310 if ((col & 0x0f) != last_fg &&
311 ((col & 0x0f) != 0 || (col & ATTR_RESETFG) == 0)) {
312 if (term_use_colors) {
313 last_fg = col & 0x0f;
314 terminfo_set_fg(last_fg);
318 /* set background color */
319 if (col & ATTR_BLINK)
324 if ((col & 0xf0) >> 4 != last_bg &&
325 ((col & 0xf0) != 0 || (col & ATTR_RESETBG) == 0)) {
326 if (term_use_colors) {
327 last_bg = (col & 0xf0) >> 4;
328 terminfo_set_bg(last_bg);
335 else if (col & ATTR_BOLD)
339 if (col & ATTR_UNDERLINE) {
340 if ((last_attrs & ATTR_UNDERLINE) == 0)
341 terminfo_set_uline(TRUE);
342 } else if (last_attrs & ATTR_UNDERLINE)
343 terminfo_set_uline(FALSE);
345 last_attrs = col & ~0xff;
348 void term_move(TERM_WINDOW *window, int x, int y)
354 if (vcx >= term_width)
356 if (vcy >= term_height)
360 static void term_printed_text(int count)
362 term_lines_empty[vcy] = FALSE;
364 /* if we continued writing past the line, wrap to next line.
365 However, next term_move() really shouldn't try to cache
366 the move, otherwise terminals would try to combine the
367 last word in upper line with first word in lower line. */
370 while (vcx >= term_width) {
372 if (vcy < term_height) vcy++;
373 if (vcx > 0) term_lines_empty[vcy] = FALSE;
377 void term_addch(TERM_WINDOW *window, int chr)
379 if (term_detached) return;
381 if (vcmove) term_move_real();
383 /* With UTF-8, move cursor only if this char is either single-byte
384 (8. bit on) or beginning of multibyte (7+8 bits on) */
385 if (term_type != TERM_TYPE_UTF8 ||
386 (chr & 0x80) == 0 || (chr & 0x40) == 0) {
387 term_printed_text(1);
390 if (vcy != term_height || vcx != 0)
391 putc(chr, window->term->out);
394 static void term_addch_utf8(TERM_WINDOW *window, unichar chr)
399 len = utf16_char_to_utf8(chr, buf);
400 for (i = 0; i < len; i++)
401 putc(buf[i], window->term->out);
404 void term_add_unichar(TERM_WINDOW *window, unichar chr)
406 if (term_detached) return;
408 if (vcmove) term_move_real();
409 term_printed_text(1);
410 if (vcy == term_height && vcx == 0)
411 return; /* last char in screen */
415 term_addch_utf8(window, chr);
418 putc((chr >> 8) & 0xff, window->term->out);
419 putc((chr & 0xff), window->term->out);
422 putc(chr, window->term->out);
427 void term_addstr(TERM_WINDOW *window, const char *str)
431 if (term_detached) return;
433 if (vcmove) term_move_real();
435 term_printed_text(len);
437 if (vcy != term_height || vcx != 0)
438 fputs(str, window->term->out);
440 fwrite(str, 1, len-1, window->term->out);
443 void term_clrtoeol(TERM_WINDOW *window)
445 if (term_detached) return;
447 /* clrtoeol() doesn't necessarily understand colors */
448 if (last_fg == -1 && last_bg == -1 &&
449 (last_attrs & (ATTR_UNDERLINE|ATTR_REVERSE)) == 0) {
450 if (!term_lines_empty[vcy]) {
451 if (vcmove) term_move_real();
453 if (vcx == 0) term_lines_empty[vcy] = TRUE;
455 } else if (vcx < term_width) {
456 /* we'll need to fill the line ourself. */
457 if (vcmove) term_move_real();
458 terminfo_repeat(' ', term_width-vcx);
459 terminfo_move(vcx, vcy);
460 term_lines_empty[vcy] = FALSE;
464 void term_move_cursor(int x, int y)
470 void term_refresh(TERM_WINDOW *window)
472 if (term_detached || freeze_counter > 0)
475 term_move(root_window, curs_x, curs_y);
479 terminfo_set_cursor_visible(TRUE);
482 term_set_color(window, ATTR_RESET);
483 fflush(window != NULL ? window->term->out : current_term->out);
486 void term_refresh_freeze(void)
490 if (!term_detached && curs_visible) {
491 terminfo_set_cursor_visible(FALSE);
492 curs_visible = FALSE;
496 void term_refresh_thaw(void)
498 if (--freeze_counter == 0)
502 void term_auto_detach(int set)
507 void term_detach(void)
509 terminfo_stop(current_term);
511 fclose(current_term->in);
512 fclose(current_term->out);
514 current_term->in = NULL;
515 current_term->out = NULL;
516 term_detached = TRUE;
519 void term_attach(FILE *in, FILE *out)
521 current_term->in = in;
522 current_term->out = out;
523 term_detached = FALSE;
525 terminfo_cont(current_term);
532 kill(getpid(), SIGSTOP);
534 terminfo_stop(current_term);
535 kill(getpid(), SIGSTOP);
536 terminfo_cont(current_term);
541 static int input_utf8(const unsigned char *buffer, int size, unichar *result)
543 const unsigned char *end = buffer;
545 *result = get_utf8_char(&end, size);
548 /* not UTF8 - fallback to 8bit ascii */
555 return (int) (end-buffer)+1;
559 /* XXX I didn't check the encoding range of big5+. This is standard big5. */
560 #define is_big5_los(lo) (0x40 <= (lo) && (lo) <= 0x7E) /* standard */
561 #define is_big5_lox(lo) (0x80 <= (lo) && (lo) <= 0xFE) /* extended */
562 #define is_big5_hi(hi) (0x81 <= (hi) && (hi) <= 0xFE)
563 #define is_big5(hi,lo) (is_big5_hi(hi) && (is_big5_los(lo) || is_big5_lox(lo)))
565 static int input_big5(const unsigned char *buffer, int size, unichar *result)
567 if (is_big5_hi(*buffer)) {
572 if (is_big5_los(buffer[1]) || is_big5_lox(buffer[1])) {
573 *result = buffer[1] + ((int) *buffer << 8);
582 static int input_8bit(const unsigned char *buffer, int size, unichar *result)
588 void term_set_input_type(int type)
592 input_func = input_utf8;
595 input_func = input_big5;
598 input_func = input_8bit;
602 int term_gets(unichar *buffer, int size)
604 int ret, i, char_len;
609 /* fread() doesn't work */
610 if (size > sizeof(term_inbuf)-term_inbuf_pos)
611 size = sizeof(term_inbuf)-term_inbuf_pos;
613 ret = read(fileno(current_term->in),
614 term_inbuf + term_inbuf_pos, size);
616 /* EOF - terminal got lost */
620 } else if (ret == -1 && (errno == EINTR || errno == EAGAIN))
624 /* convert input to unichars. */
625 term_inbuf_pos += ret;
627 for (i = 0; i < term_inbuf_pos; ) {
628 char_len = input_func(term_inbuf+i, term_inbuf_pos-i,
638 if (i >= term_inbuf_pos)
641 memmove(term_inbuf+i, term_inbuf, term_inbuf_pos-i);