+++ /dev/null
-/*
- * Screen output handling
- *
- * Copyright (c) 1987-2016 by the citadel.org team
- *
- * This program is open source software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 3.
- *
- * 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.
- */
-
-
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <signal.h>
-#include <string.h>
-#include <stdarg.h>
-#include <ctype.h>
-#include <sys/types.h>
-#include <sys/ioctl.h>
-#include "sysdep.h"
-#include <libcitadel.h>
-#include "citadel_ipc.h"
-#include "citadel_decls.h"
-#include "commands.h"
-#include "screen.h"
-
-int enable_status_line = 0;
-char status_line[1024] = " ";
-
-/* the default paginator prompt will be replaced by the server's prompt when we learn it */
-char *moreprompt = " -- more -- ";
-
-int screenheight = 24;
-int screenwidth = 80;
-int lines_printed = 0;
-int cols_printed = 0;
-
-extern int rc_ansi_color;
-extern int rc_prompt_control;
-void do_keepalive(void);
-
-/*
- * Attempt to discover the screen dimensions.
- * WARNING: This is sometimes called from a signal handler.
- */
-void check_screen_dims(void)
-{
-#ifdef TIOCGWINSZ
- struct {
- unsigned short height; /* rows */
- unsigned short width; /* columns */
- unsigned short xpixels;
- unsigned short ypixels; /* pixels */
- } xwinsz;
-
- if (ioctl(0, TIOCGWINSZ, &xwinsz) == 0) {
- if (xwinsz.height)
- screenheight = (int) xwinsz.height;
- if (xwinsz.width)
- screenwidth = (int) xwinsz.width;
- }
-#endif
-}
-
-
-/*
- * Initialize the screen
- */
-void screen_new(void)
-{
- send_ansi_detect();
- look_for_ansi();
- cls(0);
- color(DIM_WHITE);
-}
-
-
-
-/*
- * Beep.
- */
-void ctdl_beep(void) {
- putc(7, stdout);
-}
-
-
-
-
-/*
- * scr_printf() outputs to the terminal
- */
-int scr_printf(char *fmt, ...)
-{
- static char outbuf[4096]; /* static for performance -- not re-entrant -- change if needed */
- va_list ap;
- int retval;
- int i, len;
-
- va_start(ap, fmt);
- retval = vsnprintf(outbuf, sizeof outbuf, fmt, ap);
- va_end(ap);
-
- len = strlen(outbuf);
- for (i=0; i<len; ++i) {
- scr_putc(outbuf[i]);
- }
- return retval;
-}
-
-
-/*
- * Read one character from the terminal
- */
-int scr_getc(int delay)
-{
- unsigned char buf;
-
- scr_flush();
-
- buf = '\0';
- if (!read (0, &buf, 1))
- logoff(NULL, 3);
-
- lines_printed = 0;
- return buf;
-}
-
-/*
- * Issue the paginator prompt (more / hit any key to continue)
- */
-void hit_any_key(void) {
- int a, b;
-
- color(COLOR_PUSH);
- color(DIM_RED);
- scr_printf("%s\r", moreprompt);
- color(COLOR_POP);
- b=inkey();
- for (a=0; a<screenwidth; ++a) {
- scr_putc(' ');
- }
- scr_printf("\r");
-
- if ( (rc_prompt_control == 1) || ((rc_prompt_control == 3) && (userflags & US_PROMPTCTL)) ) {
- if (b == 'q' || b == 'Q' || b == 's' || b == 'S') {
- b = STOP_KEY;
- }
- if (b == 'n' || b == 'N') {
- b = NEXT_KEY;
- }
- }
-
- if (b==NEXT_KEY) sigcaught = SIGINT;
- if (b==STOP_KEY) sigcaught = SIGQUIT;
-}
-
-
-/*
- * Output one character to the terminal
- */
-int scr_putc(int c)
-{
- /* handle tabs normally */
- if (c == '\t') {
- do {
- scr_putc(' ');
- } while ((cols_printed % 8) != 0);
- return(c);
- }
-
- /* Output the character... */
- if (putc(c, stdout) == EOF) {
- logoff(NULL, 3);
- }
-
- if (c == '\n') {
- ++lines_printed;
- cols_printed = 0;
- }
- else if (c == '\r') {
- cols_printed = 0;
- }
- else if (isprint(c)) {
- ++cols_printed;
- if ((screenwidth > 0) && (cols_printed > screenwidth)) {
- ++lines_printed;
- cols_printed = 0;
- }
- }
-
- /* How many lines output before stopping for the paginator?
- * Depends on whether we are displaying a status line.
- */
- int height_offset = ( ((enable_color) && (screenwidth > 0) && (enable_status_line)) ? (3) : (2) ) ;
-
- /* Ok, go check it. Stop and display the paginator prompt if necessary. */
- if ((screenheight > 0) && (lines_printed > (screenheight-height_offset))) {
- lines_printed = 0;
- hit_any_key();
- lines_printed = 0;
- cols_printed = 0;
- }
-
- return c;
-}
-
-void scr_flush(void)
-{
- if ((enable_color) && (screenwidth > 0) && (enable_status_line)) {
- if (strlen(status_line) < screenwidth) {
- memset(&status_line[strlen(status_line)], 32, screenwidth - strlen(status_line));
- }
- printf("\033[s\033[1;1H\033[K\033[7m");
- fwrite(status_line, screenwidth, 1, stdout);
- printf("\033[27m\033[u");
- }
- fflush(stdout);
-}
-
-
-static volatile int caught_sigwinch = 0;
-
-
-/*
- * scr_winch() handles window size changes from SIGWINCH
- * resizes all our windows for us
- */
-RETSIGTYPE scr_winch(int signum)
-{
- /* if we receive this signal, we must be running
- * in a terminal that supports resizing.
- */
- caught_sigwinch = 1;
- check_screen_dims();
- signal(SIGWINCH, scr_winch);
-}
-
-
-
-/*
- * Display a 3270-style "wait" indicator at the bottom of the screen
- */
-void scr_wait_indicator(int state) {
- int sp = (screenwidth - 2);
-
- if (!enable_status_line) return;
-
- if (screenwidth > 0) {
- switch (state) {
- default:
- case 0: /* Idle */
- status_line[sp] = ' ';
- break;
- case 1: /* Waiting */
- status_line[sp] = 'X';
- break;
- case 2: /* Receiving */
- status_line[sp] = '<';
- break;
- case 3: /* Sending */
- status_line[sp] = '>';
- break;
- }
- scr_flush();
- }
-}
-
projects / citadel.git / blobdiff