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;
83 last_fg = last_bg = -1;
85 vcx = vcy = 0; crealx = crealy = -1;
86 vcmove = FALSE; cforcemove = TRUE;
89 current_term = terminfo_core_init(stdin, stdout);
90 if (current_term == NULL)
93 if (term_get_size(&width, &height)) {
94 current_term->width = width;
95 current_term->height = height;
98 /* grab CONT signal */
99 sigemptyset(&act.sa_mask);
101 act.sa_handler = sig_cont;
102 sigaction(SIGCONT, &act, NULL);
103 redraw_tag = g_timeout_add(500, (GSourceFunc) redraw_timeout, NULL);
106 term_width = current_term->width;
107 term_height = current_term->height;
108 root_window = term_window_create(0, 0, term_width, term_height);
109 term_detached = FALSE;
111 term_lines_empty = g_new0(char, term_height);
113 term_set_input_type(TERM_TYPE_8BIT);
115 g_atexit(term_deinit);
119 void term_deinit(void)
121 if (current_term != NULL) {
122 g_source_remove(redraw_tag);
124 term_common_deinit();
125 terminfo_core_deinit(current_term);
130 static void term_move_real(void)
132 if (term_detached) return;
134 if (vcx != crealx || vcy != crealy || cforcemove) {
136 terminfo_set_cursor_visible(FALSE);
137 curs_visible = FALSE;
141 crealx = crealy = -1;
144 terminfo_move_relative(crealx, crealy, vcx, vcy);
145 crealx = vcx; crealy = vcy;
151 /* Cursor position is unknown - move it immediately to known position */
152 static void term_move_reset(int x, int y)
154 if (x >= term_width) x = term_width-1;
155 if (y >= term_height) y = term_height-1;
162 /* Resize terminal - if width or height is negative,
163 the new size is unknown and should be figured out somehow */
164 void term_resize(int width, int height)
166 if (width < 0 || height < 0) {
167 terminfo_resize(current_term);
168 width = current_term->width;
169 height = current_term->height;
172 if (term_width != width || term_height != height) {
173 term_width = current_term->width = width;
174 term_height = current_term->height = height;
175 term_window_move(root_window, 0, 0, term_width, term_height);
177 g_free(term_lines_empty);
178 term_lines_empty = g_new0(char, term_height);
181 term_move_reset(0, 0);
184 void term_resize_final(int width, int height)
188 /* Returns TRUE if terminal has colors */
189 int term_has_colors(void)
191 return current_term->has_colors;
194 /* Force the colors on any way you can */
195 void term_force_colors(int set)
197 if (term_detached) return;
199 terminfo_setup_colors(current_term, set);
203 void term_clear(void)
205 if (term_detached) return;
207 term_set_color(root_window, ATTR_RESET);
209 term_move_reset(0, 0);
211 memset(term_lines_empty, 1, term_height);
217 if (term_detached) return;
219 terminfo_beep(current_term);
222 /* Create a new window in terminal */
223 TERM_WINDOW *term_window_create(int x, int y, int width, int height)
227 window = g_new0(TERM_WINDOW, 1);
228 window->term = current_term;
229 window->x = x; window->y = y;
230 window->width = width; window->height = height;
234 /* Destroy a terminal window */
235 void term_window_destroy(TERM_WINDOW *window)
240 /* Move/resize a window */
241 void term_window_move(TERM_WINDOW *window, int x, int y,
242 int width, int height)
246 window->width = width;
247 window->height = height;
251 void term_window_clear(TERM_WINDOW *window)
255 if (term_detached) return;
257 terminfo_set_normal();
258 if (window->y == 0 && window->height == term_height) {
261 for (y = 0; y < window->height; y++) {
262 term_move(window, 0, y);
263 term_clrtoeol(window);
268 /* Scroll window up/down */
269 void term_window_scroll(TERM_WINDOW *window, int count)
273 if (term_detached) return;
275 terminfo_scroll(window->y, window->y+window->height-1, count);
276 term_move_reset(vcx, vcy);
278 /* set the newly scrolled area dirty */
279 for (y = 0; y < window->height; y++)
280 term_lines_empty[window->y+y] = FALSE;
283 /* Change active color */
284 void term_set_color(TERM_WINDOW *window, int col)
288 if (term_detached) return;
290 set_normal = ((col & ATTR_RESETFG) && last_fg != -1) ||
291 ((col & ATTR_RESETBG) && last_bg != -1);
292 if (((last_attrs & ATTR_BOLD) && (col & ATTR_BOLD) == 0) ||
293 ((last_attrs & ATTR_BLINK) && (col & ATTR_BLINK) == 0)) {
294 /* we'll need to get rid of bold/blink - this can only be
295 done with setting the default color */
300 last_fg = last_bg = -1;
302 terminfo_set_normal();
305 if (!term_use_colors && (col & 0xf0) != 0)
308 /* reversed text (use standout) */
309 if (col & ATTR_REVERSE) {
310 if ((last_attrs & ATTR_REVERSE) == 0)
311 terminfo_set_standout(TRUE);
312 } else if (last_attrs & ATTR_REVERSE)
313 terminfo_set_standout(FALSE);
315 /* set foreground color */
316 if ((col & 0x0f) != last_fg &&
317 ((col & 0x0f) != 0 || (col & ATTR_RESETFG) == 0)) {
318 if (term_use_colors) {
319 last_fg = col & 0x0f;
320 terminfo_set_fg(last_fg);
324 /* set background color */
325 if (col & ATTR_BLINK)
330 if ((col & 0xf0) >> 4 != last_bg &&
331 ((col & 0xf0) != 0 || (col & ATTR_RESETBG) == 0)) {
332 if (term_use_colors) {
333 last_bg = (col & 0xf0) >> 4;
334 terminfo_set_bg(last_bg);
341 else if (col & ATTR_BOLD)
345 if (col & ATTR_UNDERLINE) {
346 if ((last_attrs & ATTR_UNDERLINE) == 0)
347 terminfo_set_uline(TRUE);
348 } else if (last_attrs & ATTR_UNDERLINE)
349 terminfo_set_uline(FALSE);
351 last_attrs = col & ~0xff;
354 void term_move(TERM_WINDOW *window, int x, int y)
360 if (vcx >= term_width)
362 if (vcy >= term_height)
366 static void term_printed_text(int count)
368 term_lines_empty[vcy] = FALSE;
370 /* if we continued writing past the line, wrap to next line.
371 However, next term_move() really shouldn't try to cache
372 the move, otherwise terminals would try to combine the
373 last word in upper line with first word in lower line. */
376 while (vcx >= term_width) {
378 if (vcy < term_height) vcy++;
379 if (vcx > 0) term_lines_empty[vcy] = FALSE;
383 void term_addch(TERM_WINDOW *window, int chr)
385 if (term_detached) return;
387 if (vcmove) term_move_real();
389 /* With UTF-8, move cursor only if this char is either single-byte
390 (8. bit on) or beginning of multibyte (7+8 bits on) */
391 if (term_type != TERM_TYPE_UTF8 ||
392 (chr & 0x80) == 0 || (chr & 0x40) == 0) {
393 term_printed_text(1);
396 if (vcy != term_height || vcx != 0)
397 putc(chr, window->term->out);
400 static void term_addch_utf8(TERM_WINDOW *window, unichar chr)
405 len = utf16_char_to_utf8(chr, buf);
406 for (i = 0; i < len; i++)
407 putc(buf[i], window->term->out);
410 void term_add_unichar(TERM_WINDOW *window, unichar chr)
412 if (term_detached) return;
414 if (vcmove) term_move_real();
415 term_printed_text(1);
416 if (vcy == term_height && vcx == 0)
417 return; /* last char in screen */
421 term_addch_utf8(window, chr);
424 putc((chr >> 8) & 0xff, window->term->out);
425 putc((chr & 0xff), window->term->out);
428 putc(chr, window->term->out);
433 void term_addstr(TERM_WINDOW *window, const char *str)
437 if (term_detached) return;
439 if (vcmove) term_move_real();
441 term_printed_text(len);
443 if (vcy != term_height || vcx != 0)
444 fputs(str, window->term->out);
446 fwrite(str, 1, len-1, window->term->out);
449 void term_clrtoeol(TERM_WINDOW *window)
451 if (term_detached) return;
453 /* clrtoeol() doesn't necessarily understand colors */
454 if (last_fg == -1 && last_bg == -1 &&
455 (last_attrs & (ATTR_UNDERLINE|ATTR_REVERSE)) == 0) {
456 if (!term_lines_empty[vcy]) {
457 if (vcmove) term_move_real();
459 if (vcx == 0) term_lines_empty[vcy] = TRUE;
461 } else if (vcx < term_width) {
462 /* we'll need to fill the line ourself. */
463 if (vcmove) term_move_real();
464 terminfo_repeat(' ', term_width-vcx);
465 terminfo_move(vcx, vcy);
466 term_lines_empty[vcy] = FALSE;
470 void term_move_cursor(int x, int y)
476 void term_refresh(TERM_WINDOW *window)
478 if (term_detached || freeze_counter > 0)
481 term_move(root_window, curs_x, curs_y);
485 terminfo_set_cursor_visible(TRUE);
488 term_set_color(window, ATTR_RESET);
489 fflush(window != NULL ? window->term->out : current_term->out);
492 void term_refresh_freeze(void)
496 if (!term_detached && curs_visible) {
497 terminfo_set_cursor_visible(FALSE);
498 curs_visible = FALSE;
502 void term_refresh_thaw(void)
504 if (--freeze_counter == 0)
508 void term_auto_detach(int set)
513 void term_detach(void)
515 terminfo_stop(current_term);
517 fclose(current_term->in);
518 fclose(current_term->out);
520 current_term->in = NULL;
521 current_term->out = NULL;
522 term_detached = TRUE;
525 void term_attach(FILE *in, FILE *out)
527 current_term->in = in;
528 current_term->out = out;
529 term_detached = FALSE;
531 terminfo_cont(current_term);
538 kill(getpid(), SIGSTOP);
540 terminfo_stop(current_term);
541 kill(getpid(), SIGSTOP);
542 terminfo_cont(current_term);
547 static int input_utf8(const unsigned char *buffer, int size, unichar *result)
549 const unsigned char *end = buffer;
551 *result = get_utf8_char(&end, size);
554 /* not UTF8 - fallback to 8bit ascii */
561 return (int) (end-buffer)+1;
565 /* XXX I didn't check the encoding range of big5+. This is standard big5. */
566 #define is_big5_los(lo) (0x40 <= (lo) && (lo) <= 0x7E) /* standard */
567 #define is_big5_lox(lo) (0x80 <= (lo) && (lo) <= 0xFE) /* extended */
568 #define is_big5_hi(hi) (0x81 <= (hi) && (hi) <= 0xFE)
569 #define is_big5(hi,lo) (is_big5_hi(hi) && (is_big5_los(lo) || is_big5_lox(lo)))
571 static int input_big5(const unsigned char *buffer, int size, unichar *result)
573 if (is_big5_hi(*buffer)) {
578 if (is_big5_los(buffer[1]) || is_big5_lox(buffer[1])) {
579 *result = buffer[1] + ((int) *buffer << 8);
588 static int input_8bit(const unsigned char *buffer, int size, unichar *result)
594 void term_set_input_type(int type)
598 input_func = input_utf8;
601 input_func = input_big5;
604 input_func = input_8bit;
608 int term_gets(unichar *buffer, int size)
610 int ret, i, char_len;
615 /* fread() doesn't work */
616 if (size > sizeof(term_inbuf)-term_inbuf_pos)
617 size = sizeof(term_inbuf)-term_inbuf_pos;
619 ret = read(fileno(current_term->in),
620 term_inbuf + term_inbuf_pos, size);
622 /* EOF - terminal got lost */
626 } else if (ret == -1 && (errno == EINTR || errno == EAGAIN))
630 /* convert input to unichars. */
631 term_inbuf_pos += ret;
633 for (i = 0; i < term_inbuf_pos; ) {
634 char_len = input_func(term_inbuf+i, term_inbuf_pos-i,
644 if (i >= term_inbuf_pos)
647 memmove(term_inbuf+i, term_inbuf, term_inbuf_pos-i);