+++ /dev/null
-/*
- term-terminfo.c : irssi
-
- Copyright (C) 2001 Timo Sirainen
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-*/
-
-#include "module.h"
-#include "signals.h"
-#include "term.h"
-#include "terminfo-core.h"
-#include "utf8.h"
-
-#include <signal.h>
-
-/* returns number of characters in the beginning of the buffer being a
- a single character, or -1 if more input is needed. The character will be
- saved in result */
-typedef int (*TERM_INPUT_FUNC)(const unsigned char *buffer, int size,
- unichar *result);
-
-struct _TERM_WINDOW {
- /* Terminal to use for window */
- TERM_REC *term;
-
- /* Area for window in terminal */
- int x, y;
- int width, height;
-};
-
-TERM_WINDOW *root_window;
-
-static char *term_lines_empty; /* 1 if line is entirely empty */
-static int vcmove, vcx, vcy, curs_visible;
-static int crealx, crealy, cforcemove;
-static int curs_x, curs_y;
-static int auto_detach;
-
-static int last_fg, last_bg, last_attrs;
-
-static int redraw_needed, redraw_tag;
-static int freeze_counter;
-
-static TERM_INPUT_FUNC input_func;
-static unsigned char term_inbuf[256];
-static int term_inbuf_pos;
-
-/* SIGCONT handler */
-static void sig_cont(int p)
-{
- redraw_needed = TRUE;
- terminfo_cont(current_term);
-}
-
-static int redraw_timeout(void)
-{
- if (redraw_needed) {
- irssi_redraw();
- redraw_needed = FALSE;
- }
-
- return 1;
-}
-
-int term_init(void)
-{
- struct sigaction act;
- int width, height;
-
- last_fg = last_bg = -1;
- last_attrs = 0;
- vcx = vcy = 0; crealx = crealy = -1;
- vcmove = FALSE; cforcemove = TRUE;
- curs_visible = TRUE;
-
- current_term = terminfo_core_init(stdin, stdout);
- if (current_term == NULL)
- return FALSE;
-
- if (term_get_size(&width, &height)) {
- current_term->width = width;
- current_term->height = height;
- }
-
- /* grab CONT signal */
- sigemptyset(&act.sa_mask);
- act.sa_flags = 0;
- act.sa_handler = sig_cont;
- sigaction(SIGCONT, &act, NULL);
- redraw_tag = g_timeout_add(500, (GSourceFunc) redraw_timeout, NULL);
-
- curs_x = curs_y = 0;
- term_width = current_term->width;
- term_height = current_term->height;
- root_window = term_window_create(0, 0, term_width, term_height);
- term_detached = FALSE;
-
- term_lines_empty = g_new0(char, term_height);
-
- term_set_input_type(TERM_TYPE_8BIT);
- term_common_init();
- g_atexit(term_deinit);
- return TRUE;
-}
-
-void term_deinit(void)
-{
- if (current_term != NULL) {
- signal(SIGCONT, SIG_DFL);
- g_source_remove(redraw_tag);
-
- term_common_deinit();
- terminfo_core_deinit(current_term);
- current_term = NULL;
- }
-}
-
-static void term_move_real(void)
-{
- if (term_detached) return;
-
- if (vcx != crealx || vcy != crealy || cforcemove) {
- if (curs_visible) {
- terminfo_set_cursor_visible(FALSE);
- curs_visible = FALSE;
- }
-
- if (cforcemove) {
- crealx = crealy = -1;
- cforcemove = FALSE;
- }
- terminfo_move_relative(crealx, crealy, vcx, vcy);
- crealx = vcx; crealy = vcy;
- }
-
- vcmove = FALSE;
-}
-
-/* Cursor position is unknown - move it immediately to known position */
-static void term_move_reset(int x, int y)
-{
- if (x >= term_width) x = term_width-1;
- if (y >= term_height) y = term_height-1;
-
- vcx = x; vcy = y;
- cforcemove = TRUE;
- term_move_real();
-}
-
-/* Resize terminal - if width or height is negative,
- the new size is unknown and should be figured out somehow */
-void term_resize(int width, int height)
-{
- if (width < 0 || height < 0) {
- terminfo_resize(current_term);
- width = current_term->width;
- height = current_term->height;
- }
-
- if (term_width != width || term_height != height) {
- term_width = current_term->width = width;
- term_height = current_term->height = height;
- term_window_move(root_window, 0, 0, term_width, term_height);
-
- g_free(term_lines_empty);
- term_lines_empty = g_new0(char, term_height);
- }
-
- term_move_reset(0, 0);
-}
-
-void term_resize_final(int width, int height)
-{
-}
-
-/* Returns TRUE if terminal has colors */
-int term_has_colors(void)
-{
- return current_term->has_colors;
-}
-
-/* Force the colors on any way you can */
-void term_force_colors(int set)
-{
- if (term_detached) return;
-
- terminfo_setup_colors(current_term, set);
-}
-
-/* Clear screen */
-void term_clear(void)
-{
- if (term_detached) return;
-
- term_set_color(root_window, ATTR_RESET);
- terminfo_clear();
- term_move_reset(0, 0);
-
- memset(term_lines_empty, 1, term_height);
-}
-
-/* Beep */
-void term_beep(void)
-{
- if (term_detached) return;
-
- terminfo_beep(current_term);
-}
-
-/* Create a new window in terminal */
-TERM_WINDOW *term_window_create(int x, int y, int width, int height)
-{
- TERM_WINDOW *window;
-
- window = g_new0(TERM_WINDOW, 1);
- window->term = current_term;
- window->x = x; window->y = y;
- window->width = width; window->height = height;
- return window;
-}
-
-/* Destroy a terminal window */
-void term_window_destroy(TERM_WINDOW *window)
-{
- g_free(window);
-}
-
-/* Move/resize a window */
-void term_window_move(TERM_WINDOW *window, int x, int y,
- int width, int height)
-{
- window->x = x;
- window->y = y;
- window->width = width;
- window->height = height;
-}
-
-/* Clear window */
-void term_window_clear(TERM_WINDOW *window)
-{
- int y;
-
- if (term_detached) return;
-
- terminfo_set_normal();
- if (window->y == 0 && window->height == term_height) {
- term_clear();
- } else {
- for (y = 0; y < window->height; y++) {
- term_move(window, 0, y);
- term_clrtoeol(window);
- }
- }
-}
-
-/* Scroll window up/down */
-void term_window_scroll(TERM_WINDOW *window, int count)
-{
- int y;
-
- if (term_detached) return;
-
- terminfo_scroll(window->y, window->y+window->height-1, count);
- term_move_reset(vcx, vcy);
-
- /* set the newly scrolled area dirty */
- for (y = 0; y < window->height; y++)
- term_lines_empty[window->y+y] = FALSE;
-}
-
-/* Change active color */
-void term_set_color(TERM_WINDOW *window, int col)
-{
- int set_normal;
-
- if (term_detached) return;
-
- set_normal = ((col & ATTR_RESETFG) && last_fg != -1) ||
- ((col & ATTR_RESETBG) && last_bg != -1);
- if (((last_attrs & ATTR_BOLD) && (col & ATTR_BOLD) == 0) ||
- ((last_attrs & ATTR_BLINK) && (col & ATTR_BLINK) == 0)) {
- /* we'll need to get rid of bold/blink - this can only be
- done with setting the default color */
- set_normal = TRUE;
- }
-
- if (set_normal) {
- last_fg = last_bg = -1;
- last_attrs = 0;
- terminfo_set_normal();
- }
-
- if (!term_use_colors && (col & 0xf0) != 0)
- col |= ATTR_REVERSE;
-
- /* reversed text (use standout) */
- if (col & ATTR_REVERSE) {
- if ((last_attrs & ATTR_REVERSE) == 0)
- terminfo_set_standout(TRUE);
- } else if (last_attrs & ATTR_REVERSE)
- terminfo_set_standout(FALSE);
-
- /* set foreground color */
- if ((col & 0x0f) != last_fg &&
- ((col & 0x0f) != 0 || (col & ATTR_RESETFG) == 0)) {
- if (term_use_colors) {
- last_fg = col & 0x0f;
- terminfo_set_fg(last_fg);
- }
- }
-
- /* set background color */
- if (col & ATTR_BLINK)
- col |= 0x80;
- else if (col & 0x80)
- col |= ATTR_BLINK;
-
- if ((col & 0xf0) >> 4 != last_bg &&
- ((col & 0xf0) != 0 || (col & ATTR_RESETBG) == 0)) {
- if (term_use_colors) {
- last_bg = (col & 0xf0) >> 4;
- terminfo_set_bg(last_bg);
- }
- }
-
- /* bold */
- if (col & 0x08)
- col |= ATTR_BOLD;
- if (col & ATTR_BOLD)
- terminfo_set_bold();
-
- /* underline */
- if (col & ATTR_UNDERLINE) {
- if ((last_attrs & ATTR_UNDERLINE) == 0)
- terminfo_set_uline(TRUE);
- } else if (last_attrs & ATTR_UNDERLINE)
- terminfo_set_uline(FALSE);
-
- last_attrs = col & ~0xff;
-}
-
-void term_move(TERM_WINDOW *window, int x, int y)
-{
- if (x >= 0 && y >= 0) {
- vcmove = TRUE;
- vcx = x+window->x;
- vcy = y+window->y;
-
- if (vcx >= term_width)
- vcx = term_width-1;
- if (vcy >= term_height)
- vcy = term_height-1;
- }
-}
-
-static void term_printed_text(int count)
-{
- term_lines_empty[vcy] = FALSE;
-
- /* if we continued writing past the line, wrap to next line.
- However, next term_move() really shouldn't try to cache
- the move, otherwise terminals would try to combine the
- last word in upper line with first word in lower line. */
- vcx += count;
- while (vcx >= term_width) {
- vcx -= term_width;
- if (vcy < term_height-1) vcy++;
- if (vcx > 0) term_lines_empty[vcy] = FALSE;
- }
-
- crealx += count;
- if (crealx >= term_width)
- cforcemove = TRUE;
-}
-
-void term_addch(TERM_WINDOW *window, int chr)
-{
- if (term_detached) return;
-
- if (vcmove) term_move_real();
-
- if (vcy < term_height-1 || vcx < term_width-1) {
- /* With UTF-8, move cursor only if this char is either
- single-byte (8. bit off) or beginning of multibyte
- (7. bit off) */
- if (term_type != TERM_TYPE_UTF8 ||
- (chr & 0x80) == 0 || (chr & 0x40) == 0) {
- term_printed_text(1);
- }
-
- putc(chr, window->term->out);
- }
-}
-
-static void term_addch_utf8(TERM_WINDOW *window, unichar chr)
-{
- char buf[10];
- int i, len;
-
- len = utf16_char_to_utf8(chr, buf);
- for (i = 0; i < len; i++)
- putc(buf[i], window->term->out);
-}
-
-void term_add_unichar(TERM_WINDOW *window, unichar chr)
-{
- if (term_detached) return;
-
- if (vcmove) term_move_real();
- if (vcy == term_height-1 && vcx == term_width-1)
- return; /* last char in screen */
-
- switch (term_type) {
- case TERM_TYPE_UTF8:
- term_printed_text(utf8_width(chr));
- term_addch_utf8(window, chr);
- break;
- case TERM_TYPE_BIG5:
- if (chr > 0xff) {
- term_printed_text(2);
- putc((chr >> 8) & 0xff, window->term->out);
- } else {
- term_printed_text(1);
- }
- putc((chr & 0xff), window->term->out);
- break;
- default:
- term_printed_text(1);
- putc(chr, window->term->out);
- break;
- }
-}
-
-void term_addstr(TERM_WINDOW *window, const char *str)
-{
- int len;
-
- if (term_detached) return;
-
- if (vcmove) term_move_real();
- len = strlen(str); /* FIXME utf8 or big5 */
- term_printed_text(len);
-
- if (vcy != term_height || vcx != 0)
- fputs(str, window->term->out);
- else
- fwrite(str, 1, len-1, window->term->out);
-}
-
-void term_clrtoeol(TERM_WINDOW *window)
-{
- if (term_detached) return;
-
- /* clrtoeol() doesn't necessarily understand colors */
- if (last_fg == -1 && last_bg == -1 &&
- (last_attrs & (ATTR_UNDERLINE|ATTR_REVERSE)) == 0) {
- if (!term_lines_empty[vcy]) {
- if (vcmove) term_move_real();
- terminfo_clrtoeol();
- if (vcx == 0) term_lines_empty[vcy] = TRUE;
- }
- } else if (vcx < term_width) {
- /* we'll need to fill the line ourself. */
- if (vcmove) term_move_real();
- terminfo_repeat(' ', term_width-vcx);
- terminfo_move(vcx, vcy);
- term_lines_empty[vcy] = FALSE;
- }
-}
-
-void term_move_cursor(int x, int y)
-{
- curs_x = x;
- curs_y = y;
-}
-
-void term_refresh(TERM_WINDOW *window)
-{
- if (term_detached || freeze_counter > 0)
- return;
-
- term_move(root_window, curs_x, curs_y);
- term_move_real();
-
- if (!curs_visible) {
- terminfo_set_cursor_visible(TRUE);
- curs_visible = TRUE;
- }
-
- term_set_color(window, ATTR_RESET);
- fflush(window != NULL ? window->term->out : current_term->out);
-}
-
-void term_refresh_freeze(void)
-{
- freeze_counter++;
-}
-
-void term_refresh_thaw(void)
-{
- if (--freeze_counter == 0)
- term_refresh(NULL);
-}
-
-void term_auto_detach(int set)
-{
- auto_detach = set;
-}
-
-void term_detach(void)
-{
- terminfo_stop(current_term);
-
- fclose(current_term->in);
- fclose(current_term->out);
-
- current_term->in = NULL;
- current_term->out = NULL;
- term_detached = TRUE;
-}
-
-void term_attach(FILE *in, FILE *out)
-{
- current_term->in = in;
- current_term->out = out;
- term_detached = FALSE;
-
- terminfo_cont(current_term);
- irssi_redraw();
-}
-
-void term_stop(void)
-{
- if (term_detached) {
- kill(getpid(), SIGTSTP);
- } else {
- terminfo_stop(current_term);
- kill(getpid(), SIGTSTP);
- terminfo_cont(current_term);
- irssi_redraw();
- }
-}
-
-static int input_utf8(const unsigned char *buffer, int size, unichar *result)
-{
- const unsigned char *end = buffer;
-
- switch (get_utf8_char(&end, size, result)) {
- case -2:
- /* not UTF8 - fallback to 8bit ascii */
- *result = *buffer;
- return 1;
- case -1:
- /* need more data */
- return -1;
- default:
- return (int) (end-buffer)+1;
- }
-}
-
-static int input_big5(const unsigned char *buffer, int size, unichar *result)
-{
- if (is_big5_hi(*buffer)) {
- /* could be */
- if (size == 1)
- return -1;
-
- if (is_big5_los(buffer[1]) || is_big5_lox(buffer[1])) {
- *result = buffer[1] + ((int) *buffer << 8);
- return 2;
- }
- }
-
- *result = *buffer;
- return 1;
-}
-
-static int input_8bit(const unsigned char *buffer, int size, unichar *result)
-{
- *result = *buffer;
- return 1;
-}
-
-void term_set_input_type(int type)
-{
- switch (type) {
- case TERM_TYPE_UTF8:
- input_func = input_utf8;
- break;
- case TERM_TYPE_BIG5:
- input_func = input_big5;
- break;
- default:
- input_func = input_8bit;
- }
-}
-
-int term_gets(unichar *buffer, int size)
-{
- int ret, i, char_len;
-
- if (term_detached)
- return 0;
-
- /* fread() doesn't work */
- if (size > sizeof(term_inbuf)-term_inbuf_pos)
- size = sizeof(term_inbuf)-term_inbuf_pos;
-
- ret = read(fileno(current_term->in),
- term_inbuf + term_inbuf_pos, size);
- if (ret == 0) {
- /* EOF - terminal got lost */
- if (auto_detach)
- term_detach();
- ret = -1;
- } else if (ret == -1 && (errno == EINTR || errno == EAGAIN))
- ret = 0;
-
- if (ret > 0) {
- /* convert input to unichars. */
- term_inbuf_pos += ret;
- ret = 0;
- for (i = 0; i < term_inbuf_pos; ) {
- char_len = input_func(term_inbuf+i, term_inbuf_pos-i,
- buffer);
- if (char_len < 0)
- break;
-
- i += char_len;
- buffer++;
- ret++;
- }
-
- if (i >= term_inbuf_pos)
- term_inbuf_pos = 0;
- else if (i > 0) {
- memmove(term_inbuf, term_inbuf+i, term_inbuf_pos-i);
- term_inbuf_pos -= i;
- }
- }
-
- return ret;
-}
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