-
/*
- * Handle full-screen curses stuff
+ * Screen output handling
+ *
+ * Copyright (c) 1987-2011 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 as published by
+ * the Free Software Foundation; either version 3 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 <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"
-#ifdef HAVE_VW_PRINTW
-#define _vwprintw vw_printw
-#else
-/* SYSV style curses (Solaris, etc.) */
-#define _vwprintw vwprintw
-#endif
#ifndef HAVE_SNPRINTF
#include "snprintf.h"
#endif
#include "commands.h"
#include "screen.h"
-#if defined(HAVE_CURSES_H) && !defined(DISABLE_CURSES)
-static SCREEN *myscreen = NULL;
-static WINDOW *mainwindow = NULL;
-static WINDOW *statuswindow = NULL;
+int enable_status_line = 0; /* FIXME the status line works, but not on Mac. Make this configurable. */
+char status_line[1024] = " ";
-char rc_screen;
-#endif
-char arg_screen;
+/* the default paginator prompt will be replaced by the server's prompt when we learn it */
+char *moreprompt = " -- more -- ";
-extern int screenheight;
-extern int screenwidth;
-extern int rc_ansi_color;
-extern void check_screen_dims(void);
+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);
-
-int is_curses_enabled(void) {
-#if defined(HAVE_CURSES_H) && !defined(DISABLE_CURSES)
- return mainwindow != NULL;
-#else
- return 0;
-#endif
-}
-
/*
- * status_line() is a convenience function for writing a "typical"
- * status line to the window.
+ * Attempt to discover the screen dimensions.
+ * WARNING: This is sometimes called from a signal handler.
*/
-void status_line(const char *humannode, const char *site_location,
- const char *room_name, int secure, int newmailcount)
+void check_screen_dims(void)
{
-#if defined(HAVE_CURSES_H) && !defined(DISABLE_CURSES)
- if (statuswindow) {
- if (secure) {
- sln_printf("Encrypted ");
- waddch(statuswindow, ACS_VLINE);
- waddch(statuswindow, ' ');
- }
- if (room_name)
- sln_printf("%s on ", room_name);
- if (humannode)
- sln_printf("%s ", humannode);
- if (newmailcount > 0) {
- waddch(statuswindow, ACS_VLINE);
- sln_printf(" %d new mail ", newmailcount);
- }
- sln_printf("\n");
+#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 /* HAVE_CURSES_H */
-}
-
-
-/*
- * Display a 3270-style "wait" indicator at the bottom of the screen
- */
-#if defined(HAVE_CURSES_H) && !defined(DISABLE_CURSES)
-void wait_indicator(int state) {
-
- if (statuswindow && !isendwin()) {
-
- mvwinch(statuswindow, 0, screenwidth - 2);
- switch (state) {
- default:
- case 0: /* Idle */
- waddch(statuswindow, ' ');
- break;
- case 1: /* Waiting */
- waddch(statuswindow, 'X');
- break;
- case 2: /* Receiving */
- waddch(statuswindow, '<');
- break;
- case 3: /* Sending */
- waddch(statuswindow, '>');
- break;
- }
- waddch(statuswindow, '\r');
- wrefresh(statuswindow);
- wrefresh(mainwindow); /* this puts the cursor back */
- }
-}
-#else
-void wait_indicator(int state) {}
#endif
+}
/*
- * Initialize the screen. If newterm() fails, myscreen will be NULL and
- * further handlers will assume we should be in line mode.
+ * Initialize the screen
*/
void screen_new(void)
{
-#if defined(HAVE_CURSES_H) && !defined(DISABLE_CURSES)
- if (arg_screen != RC_NO && rc_screen != RC_NO)
- myscreen = newterm(NULL, stdout, stdin);
- if (myscreen) {
- cbreak();
- noecho();
- nonl();
- intrflush(stdscr, FALSE);
- keypad(stdscr, TRUE);
- /* Setup all our colors */
- start_color();
- if (rc_ansi_color)
- enable_color = 1;
- /*init_pair(DIM_BLACK, COLOR_BLACK, COLOR_BLACK);*/
- init_pair(DIM_RED, COLOR_RED, COLOR_BLACK);
- init_pair(DIM_GREEN, COLOR_GREEN, COLOR_BLACK);
- init_pair(DIM_YELLOW, COLOR_YELLOW, COLOR_BLACK);
- init_pair(DIM_BLUE, COLOR_BLUE, COLOR_BLACK);
- init_pair(DIM_MAGENTA, COLOR_MAGENTA, COLOR_BLACK);
- init_pair(DIM_CYAN, COLOR_CYAN, COLOR_BLACK);
- init_pair(DIM_WHITE, COLOR_WHITE, COLOR_BLACK);
-
- if (COLOR_PAIRS > 8)
- init_pair(8, COLOR_WHITE, COLOR_BLUE);
- } else
-#endif /* HAVE_CURSES_H */
- {
- send_ansi_detect();
- look_for_ansi();
- cls(0);
- color(DIM_WHITE);
- }
- screen_set();
- windows_new();
+ send_ansi_detect();
+ look_for_ansi();
+ cls(0);
+ color(DIM_WHITE);
}
-/*
- * Kill the screen completely (used at exit). It is safe to call this
- * function more than once.
- */
-void screen_delete(void)
-{
- windows_delete();
- screen_reset();
-#if defined(HAVE_CURSES_H) && !defined(DISABLE_CURSES)
- if (myscreen) {
- delscreen(myscreen);
- }
- myscreen = NULL;
-#endif
-}
/*
* Beep.
*/
void ctdl_beep(void) {
-#if defined(HAVE_CURSES_H) && !defined(DISABLE_CURSES)
- if (myscreen)
- beep();
- else
-#endif
putc(7, stdout);
}
-/*
- * Set screen/IO parameters, e.g. at start of program or return from external
- * program run.
- */
-int screen_set(void)
-{
-#if defined(HAVE_CURSES_H) && !defined(DISABLE_CURSES)
- if (myscreen) {
- set_term(myscreen);
- wrefresh(curscr);
- return 1;
- }
-#endif /* HAVE_CURSES_H */
- return 0;
-}
-
/*
- * Reset screen/IO parameters, e.g. at exit or fork of external program.
- */
-int screen_reset(void)
-{
-#if defined(HAVE_CURSES_H) && !defined(DISABLE_CURSES)
- if (myscreen) {
- if (!isendwin()) endwin();
- return 1;
- }
-#endif /* HAVE_CURSES_H */
- return 0;
-}
-
-
-/*
- * scr_printf() outputs to the main window (or screen if not in curses)
+ * 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;
register int retval;
+ int i, len;
va_start(ap, fmt);
-#if defined(HAVE_CURSES_H) && !defined(DISABLE_CURSES)
- if (mainwindow) {
- retval = _vwprintw(mainwindow, fmt, ap);
- } else
-#endif
- retval = vprintf(fmt, ap);
- va_end(ap);
- return retval;
-}
-
-
-/*
- * err_printf() outputs to error status window (or stderr if not in curses)
- */
-int err_printf(char *fmt, ...)
-{
- va_list ap;
- register int retval;
-
- va_start(ap, fmt);
-#if defined(HAVE_CURSES_H) && !defined(DISABLE_CURSES)
- if (mainwindow) { /* FIXME: direct to error window */
- retval = _vwprintw(mainwindow, fmt, ap);
- if (fmt[strlen(fmt) - 1] == '\n')
- wrefresh(mainwindow);
- } else
-#endif
- retval = vfprintf(stderr, fmt, ap);
+ retval = vsnprintf(outbuf, sizeof outbuf, fmt, ap);
va_end(ap);
- return retval;
-}
-
-/*
- * sln_printf() outputs to error status window (or stderr if not in curses)
- */
-int sln_printf(char *fmt, ...)
-{
- va_list ap;
- register int retval;
-#if defined(HAVE_CURSES_H) && !defined(DISABLE_CURSES)
- static char buf[4096];
-#endif
-
- va_start(ap, fmt);
-#if defined(HAVE_CURSES_H) && !defined(DISABLE_CURSES)
- if (statuswindow) {
- register char *i;
-
- retval = vsnprintf(buf, 4096, fmt, ap);
- for (i = buf; *i; i++) {
- if (*i == '\r' || *i == '\n')
- wclrtoeol(statuswindow);
- sln_putc(*i);
- if (*i == '\r' || *i == '\n') {
- wrefresh(statuswindow);
- mvwinch(statuswindow, 0, 0);
- }
- }
- } else
-#endif
- retval = vprintf(fmt, ap);
- va_end(ap);
+ len = strlen(outbuf);
+ for (i=0; i<len; ++i) {
+ scr_putc(outbuf[i]);
+ }
return retval;
}
/*
- * sln_printf_if() outputs to status window, no output if not in curses
+ * Read one character from the terminal
*/
-int sln_printf_if(char *fmt, ...)
-{
- register int retval = 1;
-#if defined(HAVE_CURSES_H) && !defined(DISABLE_CURSES)
- static char buf[4096];
- va_list ap;
-
- va_start(ap, fmt);
- if (statuswindow) {
- register char *i;
-
- retval = vsnprintf(buf, 4096, fmt, ap);
- for (i = buf; *i; i++) {
- if (*i == '\r' || *i == '\n')
- wclrtoeol(statuswindow);
- sln_putc(*i);
- if (*i == '\r' || *i == '\n') {
- wrefresh(statuswindow);
- mvwinch(statuswindow, 0, 0);
- }
- }
- }
- va_end(ap);
-#endif
- return retval;
-}
-
-
int scr_getc(int delay)
{
- unsigned char buf;
+ unsigned char buf;
-#if defined(HAVE_CURSES_H) && !defined(DISABLE_CURSES)
- if (mainwindow) {
- wtimeout(mainwindow, delay);
- return wgetch(mainwindow);
- }
-#endif
+ scr_flush();
buf = '\0';
if (!read (0, &buf, 1))
logoff(NULL, 3);
+
+ lines_printed = 0;
return buf;
}
-/* the following is unused and looks broken, but there may
- be some input problems still lurking in curses mode, so
- i'll leave it blocked out for now for informational
- purposes. */
-#if 0
-int scr_blockread(void)
- {
- int a = 0;
-#if defined(HAVE_CURSES_H) && !defined(DISABLE_CURSES)
- wtimeout(mainwindow, S_KEEPALIVE);
- while (1)
- {
- do_keepalive();
- a = wgetch(mainwindow); /* will block for food */
- if (a != ERR)
- break;
- /* a = scr_getc(); */
- }
-#endif
- return a;
- }
-#endif /* 0 */
-
/*
- * scr_putc() outputs a single character
+ * Issue the paginator prompt (more / hit any key to continue)
*/
-int scr_putc(int c)
-{
-#if defined(HAVE_CURSES_H) && !defined(DISABLE_CURSES)
- if (mainwindow) {
- if (c == 7) beep();
- if (waddch(mainwindow, c) != OK)
- logoff(NULL, 3);
- return c;
+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(' ');
}
-#endif
- if (putc(c, stdout) == EOF)
- logoff(NULL, 3);
- return c;
-}
+ 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;
+ }
+ }
-int sln_putc(int c)
-{
-#if defined(HAVE_CURSES_H) && !defined(DISABLE_CURSES)
- if (statuswindow)
- return ((waddch(statuswindow, c) == OK) ? c : EOF);
-#endif
- return putc(c, stdout);
-}
-
-
-int sln_putc_if(int c)
-{
-#if defined(HAVE_CURSES_H) && !defined(DISABLE_CURSES)
- if (statuswindow)
- return ((waddch(statuswindow, c) == OK) ? c : EOF);
-#endif
- return 1;
+ if (b==NEXT_KEY) sigcaught = SIGINT;
+ if (b==STOP_KEY) sigcaught = SIGQUIT;
}
/*
- * scr_color() sets the window color for mainwindow
+ * Output one character to the terminal
*/
-int scr_color(int colornum)
+int scr_putc(int c)
{
-#if defined(HAVE_CURSES_H) && !defined(DISABLE_CURSES)
- if (mainwindow) {
-#ifdef HAVE_WCOLOR_SET
- wcolor_set(mainwindow, (colornum & 7), NULL);
-#else
- wattron(mainwindow, COLOR_PAIR((colornum & 7)));
-#endif
- if (colornum & 8) {
- wattron(mainwindow, A_BOLD);
- } else {
- wattroff(mainwindow, A_BOLD);
- }
- return 1;
+ /* handle tabs normally */
+ if (c == '\t') {
+ do {
+ scr_putc(' ');
+ } while ((cols_printed % 8) != 0);
+ return(c);
}
-#endif
- return 0;
-}
+ /* Output the character... */
+ if (putc(c, stdout) == EOF) {
+ logoff(NULL, 3);
+ }
-void scr_flush(void)
-{
-#if defined(HAVE_CURSES_H) && !defined(DISABLE_CURSES)
- if (mainwindow)
- wrefresh(mainwindow);
- else
-#endif
- fflush(stdout);
-}
+ 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;
+ }
-void err_flush(void)
-{
-#if defined(HAVE_CURSES_H) && !defined(DISABLE_CURSES)
- if (mainwindow) /* FIXME: error status window needed */
- wrefresh(mainwindow);
- else
-#endif
- fflush(stderr);
+ return c;
}
-
-void sln_flush(void)
+void scr_flush(void)
{
-#if defined(HAVE_CURSES_H) && !defined(DISABLE_CURSES)
- if (statuswindow)
- wrefresh(statuswindow);
- else
-#endif
- fflush(stdout);
+ 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;
-/*
- * this is not supposed to be called from a signal handler.
- */
-int scr_set_windowsize(CtdlIPC* ipc)
-{
-#if defined(HAVE_CURSES_H) && !defined(DISABLE_CURSES)
- if (mainwindow && caught_sigwinch) {
- caught_sigwinch = 0;
-#ifdef HAVE_RESIZETERM
- resizeterm(screenheight + 1, screenwidth);
-#endif
-#ifdef HAVE_WRESIZE
- wresize(mainwindow, screenheight, screenwidth);
- wresize(statuswindow, 1, screenwidth);
-#endif
- mvwin(statuswindow, screenheight, 0);
- status_line(ipc->ServInfo.humannode, ipc->ServInfo.site_location,
- room_name, secure, -1);
- wnoutrefresh(mainwindow);
- wnoutrefresh(statuswindow);
- doupdate();
- return 1;
- }
-#endif /* HAVE_CURSES_H */
- return 0;
-}
/*
* scr_winch() handles window size changes from SIGWINCH
RETSIGTYPE scr_winch(int signum)
{
/* if we receive this signal, we must be running
- in a terminal that supports resizing. */
- have_xterm = 1;
+ * in a terminal that supports resizing.
+ */
caught_sigwinch = 1;
check_screen_dims();
signal(SIGWINCH, scr_winch);
}
+
/*
- * Initialize the window(s) we will be using.
+ * Display a 3270-style "wait" indicator at the bottom of the screen
*/
-void windows_new(void)
-{
-#if defined(HAVE_CURSES_H) && !defined(DISABLE_CURSES)
- register int x, y;
-
- if (myscreen) {
- getmaxyx(stdscr, y, x);
- mainwindow = newwin(y - 1, x, 0, 0);
- screenwidth = x;
- screenheight = y - 1;
- immedok(mainwindow, FALSE);
- leaveok(mainwindow, FALSE);
- scrollok(mainwindow, TRUE);
- statuswindow = newwin(1, x, y - 1, 0);
-
- if (COLOR_PAIRS > 8)
- wbkgdset(statuswindow, ' ' | COLOR_PAIR(8));
- else
- wbkgdset(statuswindow, ' ' | COLOR_PAIR(DIM_WHITE));
-
- werase(statuswindow);
- immedok(statuswindow, FALSE);
- leaveok(statuswindow, FALSE);
- scrollok(statuswindow, FALSE);
- wrefresh(statuswindow);
- }
-#else /* HAVE_CURSES_H */
-
-#endif /* HAVE_CURSES_H */
-}
+void scr_wait_indicator(int state) {
+ int sp = (screenwidth - 2);
+ if (!enable_status_line) return;
-/*
- * Deinitialize the window(s) we were using (at exit).
- */
-void windows_delete(void)
-{
-#if defined(HAVE_CURSES_H) && !defined(DISABLE_CURSES)
- if (mainwindow)
- delwin(mainwindow);
- mainwindow = NULL;
- if (statuswindow)
- delwin(statuswindow);
- statuswindow = NULL;
-#else /* HAVE_CURSES_H */
-
-#endif /* HAVE_CURSES_H */
+ 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