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Fix bug of clearing terminal screen in wrong place (curses
[unix-history] / usr / src / usr.bin / tn3270 / sys_curses / termout.c
diff --git a/usr/src/usr.bin/tn3270/sys_curses/termout.c b/usr/src/usr.bin/tn3270/sys_curses/termout.c
index 9469857..d7bfa91 100644 (file)
--- a/usr/src/usr.bin/tn3270/sys_curses/termout.c
+++ b/usr/src/usr.bin/tn3270/sys_curses/termout.c
@@ -37,6 +37,8 @@ static        char    sccsid[] = "@(#)outbound.c      3.1  10/29/86";
 
 #include "../telnet.ext"
 
 
 #include "../telnet.ext"
 
+#include "../apilib/disp_asc.h"
+
 #include "../ctlr/hostctlr.h"
 #include "../ctlr/inbound.ext"
 #include "../ctlr/oia.h"
 #include "../ctlr/hostctlr.h"
 #include "../ctlr/inbound.ext"
 #include "../ctlr/oia.h"
@@ -57,10 +59,8 @@ extern void EmptyTerminal();
 static int terminalCursorAddress;      /* where the cursor is on term */
 static int screenInitd;                /* the screen has been initialized */
 static int screenStopped;              /* the screen has been stopped */
 static int terminalCursorAddress;      /* where the cursor is on term */
 static int screenInitd;                /* the screen has been initialized */
 static int screenStopped;              /* the screen has been stopped */
-#if    defined(SLOWSCREEN)
 static int max_changes_before_poll;    /* how many characters before looking */
                                        /* at terminal and net again */
 static int max_changes_before_poll;    /* how many characters before looking */
                                        /* at terminal and net again */
-#endif /* defined(SLOWSCREEN) */
 
 static int needToRing;                 /* need to ring terinal bell */
 static char *bellSequence = "\07";     /* bell sequence (may be replaced by
 
 static int needToRing;                 /* need to ring terinal bell */
 static char *bellSequence = "\07";     /* bell sequence (may be replaced by
@@ -74,10 +74,8 @@ static char *KS, *KE;
 #endif /* defined(unix) */
 
 
 #endif /* defined(unix) */
 
 
-#if    defined(SLOWSCREEN)
 static int inHighlightMode = 0;
 ScreenImage Terminal[MAXSCREENSIZE];
 static int inHighlightMode = 0;
 ScreenImage Terminal[MAXSCREENSIZE];
-#endif /* defined(SLOWSCREEN) */
 
 /* Variables for transparent mode */
 #if    defined(unix)
 
 /* Variables for transparent mode */
 #if    defined(unix)
@@ -85,10 +83,6 @@ static int tcflag = -1;                      /* transparent mode command flag */
 static int savefd[2];                  /* for storing fds during transcom */
 extern int     tin, tout;              /* file descriptors */
 #endif /* defined(unix) */
 static int savefd[2];                  /* for storing fds during transcom */
 extern int     tin, tout;              /* file descriptors */
 #endif /* defined(unix) */
-
-
-#include "disp_asc.out"
-
 \f
 
 /*
 \f
 
 /*
@@ -101,10 +95,8 @@ void
 init_screen()
 {
     bellwinup = 0;
 init_screen()
 {
     bellwinup = 0;
-#if    defined(SLOWSCREEN)
     inHighlightMode = 0;
     ClearArray(Terminal);
     inHighlightMode = 0;
     ClearArray(Terminal);
-#endif /* defined(SLOWSCREEN) */
 }
 
 
 }
 
 
@@ -148,7 +140,6 @@ int where;          /* cursor address */
        /* NOTREACHED */
 }
 \f
        /* NOTREACHED */
 }
 \f
-#if    defined(SLOWSCREEN)
 /* What is the screen address of the attribute byte for the terminal */
 
 static int
 /* What is the screen address of the attribute byte for the terminal */
 
 static int
@@ -168,7 +159,6 @@ register int        p;
 
     return(LowestScreen());    /* unformatted screen... */
 }
 
     return(LowestScreen());    /* unformatted screen... */
 }
-#endif /* defined(SLOWSCREEN) */
 \f
 /*
  *     There are two algorithms for updating the screen.
 \f
 /*
  *     There are two algorithms for updating the screen.
@@ -188,7 +178,6 @@ register int        p;
  */
 
 
  */
 
 
-#if defined(SLOWSCREEN)
 #if    defined(NOT43)
 static int
 #else  /* defined(NOT43) */
 #if    defined(NOT43)
 static int
 #else  /* defined(NOT43) */
@@ -336,8 +325,8 @@ SlowScreen()
                        columnsleft = NumberColumns;
                    }
                    SetHighlightMode(pointer);  /* Turn on highlighting */
                        columnsleft = NumberColumns;
                    }
                    SetHighlightMode(pointer);  /* Turn on highlighting */
-                   while (!IsStartField(pointer) &&
-                               !TermIsStartField(pointer)) {
+                   while ((!IsStartField(pointer)) &&
+                               (!TermIsStartField(pointer))) {
                        c = GetHost(pointer);
                        DoCharacterAt(c,pointer);       /* MACRO */
                        pointer = ScreenInc(pointer);
                        c = GetHost(pointer);
                        DoCharacterAt(c,pointer);       /* MACRO */
                        pointer = ScreenInc(pointer);
@@ -384,6 +373,10 @@ SlowScreen()
                         * the end of the screen.
                         */
                    if (j > pointer) {
                         * the end of the screen.
                         */
                    if (j > pointer) {
+                       /*
+                        * pointer is guaranteed to be higher than Highest...
+                        */
+                       pointer = Highest+1;    /* We did the highest thing */
                        break;
                    }
                } else {
                        break;
                    }
                } else {
@@ -442,7 +435,6 @@ SlowScreen()
     EmptyTerminal();                   /* move data along */
     return;
 }
     EmptyTerminal();                   /* move data along */
     return;
 }
-#endif /* defined(SLOWSCREEN) */
 \f
 #if    defined(NOT43)
 static int
 \f
 #if    defined(NOT43)
 static int
@@ -622,16 +614,14 @@ InitTerminal()
        extern char *tgetstr();
 #endif /* defined(unix) */
 
        extern char *tgetstr();
 #endif /* defined(unix) */
 
-#if    defined(SLOWSCREEN)
        ClearArray(Terminal);
        ClearArray(Terminal);
-#endif /* defined(SLOWSCREEN) */
        terminalCursorAddress = SetBufferAddress(0,0);
 #if defined(unix)
        signal(SIGHUP, abort);
 #endif
 
        TryToSend = FastScreen;
        terminalCursorAddress = SetBufferAddress(0,0);
 #if defined(unix)
        signal(SIGHUP, abort);
 #endif
 
        TryToSend = FastScreen;
-#if defined(unix) && defined(SLOWSCREEN)
+#if defined(unix)
        ioctl(1, TIOCGETP, (char *) &ourttyb);
        if ((ourttyb.sg_ospeed < 0) || (ourttyb.sg_ospeed > B9600)) {
            max_changes_before_poll = 1920;
        ioctl(1, TIOCGETP, (char *) &ourttyb);
        if ((ourttyb.sg_ospeed < 0) || (ourttyb.sg_ospeed > B9600)) {
            max_changes_before_poll = 1920;
@@ -643,7 +633,7 @@ InitTerminal()
            TryToSend = SlowScreen;
            HaveInput = 1;              /* get signals going */
        }
            TryToSend = SlowScreen;
            HaveInput = 1;              /* get signals going */
        }
-#endif /* defined(unix) && defined(SLOWSCREEN) */
+#endif /* defined(unix) */
        setcommandmode();
        /*
         * By now, initscr() (in curses) has been called (from telnet.c),
        setcommandmode();
        /*
         * By now, initscr() (in curses) has been called (from telnet.c),
@@ -675,7 +665,6 @@ InitTerminal()
        screenInitd = 1;
        screenStopped = 0;              /* Not stopped */
     }
        screenInitd = 1;
        screenStopped = 0;              /* Not stopped */
     }
-    Initialized = 1;
 }
 
 
 }
 
 
@@ -688,9 +677,7 @@ int doNewLine;
     if (screenInitd && !screenStopped) {
        move(NumberLines-1, 1);
        standend();
     if (screenInitd && !screenStopped) {
        move(NumberLines-1, 1);
        standend();
-#if    defined(SLOWSCREEN)
        inHighlightMode = 0;
        inHighlightMode = 0;
-#endif /* defined(SLOWSCREEN) */
        DoARefresh();
        setcommandmode();
        endwin();
        DoARefresh();
        setcommandmode();
        endwin();
@@ -743,9 +730,7 @@ LocalClearScreen()
 {
     outputPurge();             /* flush all data to terminal */
     clear();                   /* clear in curses */
 {
     outputPurge();             /* flush all data to terminal */
     clear();                   /* clear in curses */
-#if    defined(SLOWSCREEN)
     ClearArray(Terminal);
     ClearArray(Terminal);
-#endif /* defined(SLOWSCREEN) */
     Clear3270();
     Lowest = HighestScreen()+1; /* everything in sync... */
     Highest = LowestScreen()+1;
     Clear3270();
     Lowest = HighestScreen()+1; /* everything in sync... */
     Highest = LowestScreen()+1;
@@ -759,11 +744,6 @@ BellOff()
        delwin(bellwin);
        bellwin = 0;
        bellwinup = 0;
        delwin(bellwin);
        bellwin = 0;
        bellwinup = 0;
-       Lowest = MIN(Lowest, LINES/2);
-       Highest = MAX(Highest, (LINES/2)+3);
-#if    defined(SLOWSCREEN)
-       memset((char *)(Terminal+LINES/2), 0, (sizeof Terminal[0])*(3*COLS));
-#endif /* defined(SLOWSCREEN) */
        touchwin(stdscr);
        DoARefresh();
     }
        touchwin(stdscr);
        DoARefresh();
     }
@@ -813,7 +793,7 @@ int
 DoTerminalOutput()
 {
        /* called just before a select to conserve IO to terminal */
 DoTerminalOutput()
 {
        /* called just before a select to conserve IO to terminal */
-    if (!Initialized) {
+    if (!(screenInitd||screenStopped)) {
        return 1;               /* No output if not initialized */
     }
     if ((Lowest <= Highest) || needToRing ||
        return 1;               /* No output if not initialized */
     }
     if ((Lowest <= Highest) || needToRing ||
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.