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charproc.c
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charproc.c
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/*
* $XConsortium: charproc.c /main/196 1996/12/03 16:52:46 swick $
* $XFree86: xc/programs/xterm/charproc.c,v 3.102 2000/02/29 03:09:26 dawes Exp $
*/
/*
Copyright 1999-2000 by Thomas E. Dickey <dickey@clark.net>
All Rights Reserved
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name(s) of the above copyright
holders shall not be used in advertising or otherwise to promote the
sale, use or other dealings in this Software without prior written
authorization.
Copyright (c) 1988 X Consortium
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of the X Consortium shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from the X Consortium.
*/
/*
* Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
*
* All Rights Reserved
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notice appear in all copies and that
* both that copyright notice and this permission notice appear in
* supporting documentation, and that the name of Digital Equipment
* Corporation not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior permission.
*
*
* DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
* ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
* DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
* ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
* WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
* ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
/* charproc.c */
#include <version.h>
#include <xterm.h>
#include <X11/Xos.h>
#include <X11/Xatom.h>
#include <X11/Xutil.h>
#include <X11/cursorfont.h>
#include <X11/StringDefs.h>
#include <X11/Xmu/Atoms.h>
#include <X11/Xmu/CharSet.h>
#include <X11/Xmu/Converters.h>
#if OPT_INPUT_METHOD
#include <X11/Xaw/XawImP.h>
#endif
#include <stdio.h>
#include <ctype.h>
#ifdef MINIX
#include <sys/nbio.h>
#define select(n,r,w,x,t) nbio_select(n,r,w,x,t)
#define read(f,b,s) nbio_read(f,b,s)
#define write(f,b,s) nbio_write(f,b,s)
#endif
#include <VTparse.h>
#include <data.h>
#include <error.h>
#include <menu.h>
#include <main.h>
#include <fontutils.h>
#include <xcharmouse.h>
#if OPT_ZICONBEEP || OPT_TOOLBAR
#define HANDLE_STRUCT_NOTIFY 1
#endif
#if !defined(NO_ACTIVE_ICON) || defined(HANDLE_STRUCT_NOTIFY)
#include <X11/Shell.h>
#endif /* NO_ACTIVE_ICON */
extern char *ProgramName;
static int in_put (void);
static int set_character_class (char *s);
static void FromAlternate (TScreen *screen);
static void RequestResize (XtermWidget termw, int rows, int cols, int text);
static void SwitchBufs (TScreen *screen);
static void ToAlternate (TScreen *screen);
static void VTallocbuf (void);
static void WriteText (TScreen *screen, PAIRED_CHARS(Char *str, Char *str2), Cardinal len);
static void ansi_modes (XtermWidget termw, void (*func)(unsigned *p, unsigned mask));
static void bitclr (unsigned *p, unsigned mask);
static void bitcpy (unsigned *p, unsigned q, unsigned mask);
static void bitset (unsigned *p, unsigned mask);
static void dpmodes (XtermWidget termw, void (*func)(unsigned *p, unsigned mask));
static void restoremodes (XtermWidget termw);
static void savemodes (XtermWidget termw);
static void unparseputn (unsigned int n, int fd);
static void window_ops (XtermWidget termw);
#if OPT_BLINK_CURS
static void BlinkCursor ( XtPointer closure, XtIntervalId* id);
static void StartBlinking (TScreen *screen);
static void StopBlinking (TScreen *screen);
#else
#define StartBlinking(screen) /* nothing */
#define StopBlinking(screen) /* nothing */
#endif
#define DEFAULT -1
#define BELLSUPPRESSMSEC 200
#define doinput() (morePtyData(&VTbuffer) ? nextPtyData(&VTbuffer) : in_put())
static int nparam;
static ANSI reply;
static int param[NPARAM];
#ifdef UNUSED
static unsigned long ctotal;
static unsigned long ntotal;
#endif
static jmp_buf vtjmpbuf;
/* event handlers */
static void HandleBell PROTO_XT_ACTIONS_ARGS;
static void HandleIgnore PROTO_XT_ACTIONS_ARGS;
static void HandleKeymapChange PROTO_XT_ACTIONS_ARGS;
static void HandleVisualBell PROTO_XT_ACTIONS_ARGS;
#if HANDLE_STRUCT_NOTIFY
static void HandleStructNotify PROTO_XT_EV_HANDLER_ARGS;
#endif
/*
* NOTE: VTInitialize zeros out the entire ".screen" component of the
* XtermWidget, so make sure to add an assignment statement in VTInitialize()
* for each new ".screen" field added to this resource list.
*/
/* Defaults */
#if OPT_ISO_COLORS
static Boolean defaultCOLORMODE = DFT_COLORMODE;
/*
* If we default to colorMode enabled, compile-in defaults for the ANSI colors.
*/
#if DFT_COLORMODE
#define DFT_COLOR(name) name
#else
#define DFT_COLOR(name) XtDefaultForeground
#endif
#endif
static Boolean defaultFALSE = FALSE;
static Boolean defaultTRUE = TRUE;
static int defaultZERO = 0;
static int defaultIntBorder = DEFBORDER;
static int defaultSaveLines = SAVELINES;
static int defaultScrollLines = SCROLLLINES;
static int defaultNMarginBell = N_MARGINBELL;
static int defaultMultiClickTime = MULTICLICKTIME;
static int defaultBellSuppressTime = BELLSUPPRESSMSEC;
static char * _Font_Selected_ = "yes"; /* string is arbitrary */
#if OPT_BLINK_CURS
static int defaultBlinkOnTime = 600;
static int defaultBlinkOffTime = 300;
#endif
#if OPT_PRINT_COLORS
static int defaultONE = 1;
#endif
#if OPT_DEC_CHRSET
static int default_NUM_CHRSET = NUM_CHRSET;
#endif
static char defaultTranslations[] =
"\
Shift <KeyPress> Prior:scroll-back(1,halfpage) \n\
Shift <KeyPress> Next:scroll-forw(1,halfpage) \n\
Shift <KeyPress> Select:select-cursor-start() select-cursor-end(PRIMARY, CUT_BUFFER0) \n\
Shift <KeyPress> Insert:insert-selection(PRIMARY, CUT_BUFFER0) \n\
~Meta <KeyPress>:insert-seven-bit() \n\
Meta <KeyPress>:insert-eight-bit() \n\
!Ctrl <Btn1Down>:popup-menu(mainMenu) \n\
!Lock Ctrl <Btn1Down>:popup-menu(mainMenu) \n\
!Lock Ctrl @Num_Lock <Btn1Down>:popup-menu(mainMenu) \n\
! @Num_Lock Ctrl <Btn1Down>:popup-menu(mainMenu) \n\
~Meta <Btn1Down>:select-start() \n\
~Meta <Btn1Motion>:select-extend() \n\
!Ctrl <Btn2Down>:popup-menu(vtMenu) \n\
!Lock Ctrl <Btn2Down>:popup-menu(vtMenu) \n\
!Lock Ctrl @Num_Lock <Btn2Down>:popup-menu(vtMenu) \n\
! @Num_Lock Ctrl <Btn2Down>:popup-menu(vtMenu) \n\
~Ctrl ~Meta <Btn2Down>:ignore() \n\
Meta <Btn2Down>:clear-saved-lines() \n\
~Ctrl ~Meta <Btn2Up>:insert-selection(PRIMARY, CUT_BUFFER0) \n\
!Ctrl <Btn3Down>:popup-menu(fontMenu) \n\
!Lock Ctrl <Btn3Down>:popup-menu(fontMenu) \n\
!Lock Ctrl @Num_Lock <Btn3Down>:popup-menu(fontMenu) \n\
! @Num_Lock Ctrl <Btn3Down>:popup-menu(fontMenu) \n\
~Ctrl ~Meta <Btn3Down>:start-extend() \n\
~Meta <Btn3Motion>:select-extend() \n\
Ctrl <Btn4Down>:scroll-back(1,halfpage) \n\
Lock Ctrl <Btn4Down>:scroll-back(1,halfpage) \n\
Lock @Num_Lock Ctrl <Btn4Down>:scroll-back(1,halfpage) \n\
@Num_Lock Ctrl <Btn4Down>:scroll-back(1,halfpage) \n\
<Btn4Down>:scroll-back(5,line) \n\
Ctrl <Btn5Down>:scroll-forw(1,halfpage) \n\
Lock Ctrl <Btn5Down>:scroll-forw(1,halfpage) \n\
Lock @Num_Lock Ctrl <Btn5Down>:scroll-forw(1,halfpage) \n\
@Num_Lock Ctrl <Btn5Down>:scroll-forw(1,halfpage) \n\
<Btn5Down>:scroll-forw(5,line) \n\
<BtnUp>:select-end(PRIMARY, CUT_BUFFER0) \n\
<BtnDown>:bell(0) \
"; /* PROCURA added "Meta <Btn2Down>:clear-saved-lines()" */
static XtActionsRec actionsList[] = {
{ "allow-send-events", HandleAllowSends },
{ "bell", HandleBell },
{ "clear-saved-lines", HandleClearSavedLines },
{ "create-menu", HandleCreateMenu },
{ "dired-button", DiredButton },
{ "hard-reset", HandleHardReset },
{ "ignore", HandleIgnore },
{ "insert", HandleKeyPressed }, /* alias for insert-seven-bit */
{ "insert-eight-bit", HandleEightBitKeyPressed },
{ "insert-selection", HandleInsertSelection },
{ "insert-seven-bit", HandleKeyPressed },
{ "interpret", HandleInterpret },
{ "keymap", HandleKeymapChange },
{ "popup-menu", HandlePopupMenu },
{ "print", HandlePrint },
{ "quit", HandleQuit },
{ "redraw", HandleRedraw },
{ "delete-is-del", HandleDeleteIsDEL },
{ "scroll-back", HandleScrollBack },
{ "scroll-forw", HandleScrollForward },
{ "secure", HandleSecure },
{ "select-cursor-end", HandleKeyboardSelectEnd },
{ "select-cursor-start", HandleKeyboardSelectStart },
{ "select-end", HandleSelectEnd },
{ "select-extend", HandleSelectExtend },
{ "select-set", HandleSelectSet },
{ "select-start", HandleSelectStart },
{ "send-signal", HandleSendSignal },
{ "set-8-bit-control", Handle8BitControl },
{ "set-allow132", HandleAllow132 },
{ "set-altscreen", HandleAltScreen },
{ "set-appcursor", HandleAppCursor },
{ "set-appkeypad", HandleAppKeypad },
{ "set-autolinefeed", HandleAutoLineFeed },
{ "set-autowrap", HandleAutoWrap },
{ "set-backarrow", HandleBackarrow },
{ "set-cursesemul", HandleCursesEmul },
{ "set-jumpscroll", HandleJumpscroll },
{ "set-old-function-keys", HandleOldFunctionKeys },
{ "set-marginbell", HandleMarginBell },
{ "set-reverse-video", HandleReverseVideo },
{ "set-reversewrap", HandleReverseWrap },
{ "set-scroll-on-key", HandleScrollKey },
{ "set-scroll-on-tty-output", HandleScrollTtyOutput },
{ "set-scrollbar", HandleScrollbar },
{ "set-sun-function-keys", HandleSunFunctionKeys },
{ "set-sun-keyboard", HandleSunKeyboard },
{ "set-titeInhibit", HandleTiteInhibit },
{ "set-visual-bell", HandleSetVisualBell },
{ "set-vt-font", HandleSetFont },
{ "soft-reset", HandleSoftReset },
{ "start-cursor-extend", HandleKeyboardStartExtend },
{ "start-extend", HandleStartExtend },
{ "string", HandleStringEvent },
{ "vi-button", ViButton },
{ "visual-bell", HandleVisualBell },
#ifdef ALLOWLOGGING
{ "set-logging", HandleLogging },
#endif
#if OPT_BLINK_CURS
{ "set-cursorblink", HandleCursorBlink },
#endif
#if OPT_DEC_CHRSET
{ "set-font-doublesize", HandleFontDoublesize },
#endif
#if OPT_DEC_SOFTFONT
{ "set-font-loading", HandleFontLoading },
#endif
#if OPT_HP_FUNC_KEYS
{ "set-hp-function-keys", HandleHpFunctionKeys },
#endif
#if OPT_MAXIMIZE
{ "deiconify", HandleDeIconify },
{ "iconify", HandleIconify },
{ "maximize", HandleMaximize },
{ "restore", HandleRestoreSize },
#endif
#if OPT_NUM_LOCK
{ "meta-sends-escape", HandleMetaEsc },
{ "set-num-lock", HandleNumLock },
#endif
#if OPT_SCO_FUNC_KEYS
{ "set-sco-function-keys", HandleScoFunctionKeys },
#endif
#if OPT_SHIFT_KEYS
{ "larger-vt-font", HandleLargerFont },
{ "smaller-vt-font", HandleSmallerFont },
#endif
#if OPT_TEK4014
{ "set-terminal-type", HandleSetTerminalType },
{ "set-visibility", HandleVisibility },
{ "set-tek-text", HandleSetTekText },
{ "tek-page", HandleTekPage },
{ "tek-reset", HandleTekReset },
{ "tek-copy", HandleTekCopy },
#endif
};
static XtResource resources[] = {
{XtNfont, XtCFont, XtRString, sizeof(char *),
XtOffsetOf(XtermWidgetRec, misc.f_n), XtRString,
DEFFONT},
{XtNboldFont, XtCBoldFont, XtRString, sizeof(char *),
XtOffsetOf(XtermWidgetRec, misc.f_b), XtRString,
DEFBOLDFONT},
{XtNc132, XtCC132, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.c132),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNcharClass, XtCCharClass, XtRString, sizeof(char *),
XtOffsetOf(XtermWidgetRec, screen.charClass),
XtRString, (XtPointer) NULL},
{XtNcurses, XtCCurses, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.curses),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNhpLowerleftBugCompat, XtCHpLowerleftBugCompat, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.hp_ll_bc),
XtRBoolean, (XtPointer) &defaultFALSE},
#if OPT_XMC_GLITCH
{XtNxmcGlitch, XtCXmcGlitch, XtRInt, sizeof(int),
XtOffsetOf(XtermWidgetRec, screen.xmc_glitch),
XtRString, "0"},
{XtNxmcAttributes, XtCXmcAttributes, XtRInt, sizeof(int),
XtOffsetOf(XtermWidgetRec, screen.xmc_attributes),
XtRString, "1"},
{XtNxmcInline, XtCXmcInline, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.xmc_inline),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNxmcMoveSGR, XtCXmcMoveSGR, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.move_sgr_ok),
XtRBoolean, (XtPointer) &defaultTRUE},
#endif
{XtNcutNewline, XtCCutNewline, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.cutNewline),
XtRBoolean, (XtPointer) &defaultTRUE},
{XtNcutToBeginningOfLine, XtCCutToBeginningOfLine, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.cutToBeginningOfLine),
XtRBoolean, (XtPointer) &defaultTRUE},
{XtNhighlightSelection,XtCHighlightSelection,XtRBoolean,
sizeof(Boolean),XtOffsetOf(XtermWidgetRec, screen.highlight_selection),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNtrimSelection,XtCTrimSelection,XtRBoolean,
sizeof(Boolean),XtOffsetOf(XtermWidgetRec, screen.trim_selection),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNbackground, XtCBackground, XtRPixel, sizeof(Pixel),
XtOffsetOf(XtermWidgetRec, core.background_pixel),
XtRString, XtDefaultBackground},
Cres(XtNforeground, screen.foreground, XtDefaultForeground),
Cres(XtNcursorColor, screen.cursorcolor, XtDefaultForeground),
#if OPT_BLINK_CURS
{XtNcursorBlink, XtCCursorBlink, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.cursor_blink),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNcursorOnTime, XtCCursorOnTime, XtRInt, sizeof(int),
XtOffsetOf(XtermWidgetRec, screen.cursor_on),
XtRInt, (XtPointer) &defaultBlinkOnTime},
{XtNcursorOffTime, XtCCursorOffTime, XtRInt, sizeof(int),
XtOffsetOf(XtermWidgetRec, screen.cursor_off),
XtRInt, (XtPointer) &defaultBlinkOffTime},
#endif
{XtNkeyboardDialect, XtCKeyboardDialect, XtRString, sizeof(String),
XtOffsetOf(XtermWidgetRec, screen.keyboard_dialect),
XtRString, (XtPointer) DFT_KBD_DIALECT},
{XtNeightBitInput, XtCEightBitInput, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.input_eight_bits),
XtRBoolean, (XtPointer) &defaultTRUE},
{XtNeightBitOutput, XtCEightBitOutput, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.output_eight_bits),
XtRBoolean, (XtPointer) &defaultTRUE},
{XtNeightBitControl, XtCEightBitControl, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.control_eight_bits),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNmetaSendsEscape, XtCMetaSendsEscape, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.meta_sends_esc),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNgeometry,XtCGeometry, XtRString, sizeof(char *),
XtOffsetOf(XtermWidgetRec, misc.geo_metry),
XtRString, (XtPointer) NULL},
{XtNalwaysHighlight,XtCAlwaysHighlight,XtRBoolean,
sizeof(Boolean),XtOffsetOf(XtermWidgetRec, screen.always_highlight),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNappcursorDefault,XtCAppcursorDefault,XtRBoolean,
sizeof(Boolean),XtOffsetOf(XtermWidgetRec, misc.appcursorDefault),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNappkeypadDefault,XtCAppkeypadDefault,XtRBoolean,
sizeof(Boolean),XtOffsetOf(XtermWidgetRec, misc.appkeypadDefault),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNbackarrowKey, XtCBackarrowKey, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.backarrow_key),
XtRBoolean, (XtPointer) &defaultTRUE},
{XtNbellSuppressTime, XtCBellSuppressTime, XtRInt, sizeof(int),
XtOffsetOf(XtermWidgetRec, screen.bellSuppressTime),
XtRInt, (XtPointer) &defaultBellSuppressTime},
{XtNtekGeometry,XtCGeometry, XtRString, sizeof(char *),
XtOffsetOf(XtermWidgetRec, misc.T_geometry),
XtRString, (XtPointer) NULL},
{XtNinternalBorder,XtCBorderWidth,XtRInt, sizeof(int),
XtOffsetOf(XtermWidgetRec, screen.border),
XtRInt, (XtPointer) &defaultIntBorder},
{XtNjumpScroll, XtCJumpScroll, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.jumpscroll),
XtRBoolean, (XtPointer) &defaultTRUE},
{XtNoldXtermFKeys, XtCOldXtermFKeys, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.old_fkeys),
XtRBoolean, (XtPointer) &defaultFALSE},
Bres(XtNdeleteIsDEL, XtCDeleteIsDEL, screen.delete_is_del, FALSE),
#ifdef ALLOWLOGGING
{XtNlogFile, XtCLogfile, XtRString, sizeof(char *),
XtOffsetOf(XtermWidgetRec, screen.logfile),
XtRString, (XtPointer) NULL},
{XtNlogging, XtCLogging, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, misc.log_on),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNlogInhibit, XtCLogInhibit, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, misc.logInhibit),
XtRBoolean, (XtPointer) &defaultFALSE},
#endif
{XtNloginShell, XtCLoginShell, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, misc.login_shell),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNmarginBell, XtCMarginBell, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.marginbell),
XtRBoolean, (XtPointer) &defaultFALSE},
Cres(XtNpointerColor, screen.mousecolor, XtDefaultForeground),
{XtNpointerColorBackground, XtCBackground, XtRPixel, sizeof(Pixel),
XtOffsetOf(XtermWidgetRec, screen.mousecolorback),
XtRString, "XtDefaultBackground"},
{XtNpointerShape,XtCCursor, XtRCursor, sizeof(Cursor),
XtOffsetOf(XtermWidgetRec, screen.pointer_cursor),
XtRString, (XtPointer) "xterm"},
{XtNanswerbackString,XtCAnswerbackString, XtRString, sizeof(String),
XtOffsetOf(XtermWidgetRec, screen.answer_back),
XtRString, (XtPointer) ""},
#if OPT_PRINT_COLORS
{XtNprintAttributes,XtCPrintAttributes, XtRInt, sizeof(int),
XtOffsetOf(XtermWidgetRec, screen.print_attributes),
XtRInt, (XtPointer) &defaultONE},
#endif
{XtNprinterAutoClose,XtCPrinterAutoClose, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.printer_autoclose),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNprinterControlMode, XtCPrinterControlMode, XtRInt, sizeof(int),
XtOffsetOf(XtermWidgetRec, screen.printer_controlmode),
XtRInt, (XtPointer) &defaultZERO},
#ifdef VMS
#define OS_DEPENDENT_PRINT_COMMAND "print/delete/noflag"
#else /* VMS */
#define OS_DEPENDENT_PRINT_COMMAND "lpr"
#endif /* VMS */
{XtNprinterCommand,XtCPrinterCommand, XtRString, sizeof(String),
XtOffsetOf(XtermWidgetRec, screen.printer_command),
XtRString, (XtPointer) OS_DEPENDENT_PRINT_COMMAND},
{XtNprinterExtent,XtCPrinterExtent, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.printer_extent),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNprinterFormFeed,XtCPrinterFormFeed, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.printer_formfeed),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNmultiClickTime,XtCMultiClickTime, XtRInt, sizeof(int),
XtOffsetOf(XtermWidgetRec, screen.multiClickTime),
XtRInt, (XtPointer) &defaultMultiClickTime},
{XtNmultiScroll,XtCMultiScroll, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.multiscroll),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNnMarginBell,XtCColumn, XtRInt, sizeof(int),
XtOffsetOf(XtermWidgetRec, screen.nmarginbell),
XtRInt, (XtPointer) &defaultNMarginBell},
{XtNreverseVideo,XtCReverseVideo,XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, misc.re_verse),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNresizeGravity, XtCResizeGravity, XtRGravity, sizeof(XtGravity),
XtOffsetOf(XtermWidgetRec, misc.resizeGravity),
XtRImmediate, (XtPointer) SouthWestGravity},
{XtNreverseWrap,XtCReverseWrap, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, misc.reverseWrap),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNautoWrap,XtCAutoWrap, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, misc.autoWrap),
XtRBoolean, (XtPointer) &defaultTRUE},
{XtNsaveLines, XtCSaveLines, XtRInt, sizeof(int),
XtOffsetOf(XtermWidgetRec, screen.savelines),
XtRInt, (XtPointer) &defaultSaveLines},
{XtNscrollBar, XtCScrollBar, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, misc.scrollbar),
XtRBoolean, (XtPointer) &defaultFALSE},
#ifdef SCROLLBAR_RIGHT
{XtNrightScrollBar, XtCRightScrollBar, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, misc.useRight),
XtRBoolean, (XtPointer) &defaultFALSE},
#endif
{XtNscrollTtyOutput,XtCScrollCond, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.scrollttyoutput),
XtRBoolean, (XtPointer) &defaultTRUE},
{XtNscrollKey, XtCScrollCond, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.scrollkey),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNscrollLines, XtCScrollLines, XtRInt, sizeof(int),
XtOffsetOf(XtermWidgetRec, screen.scrolllines),
XtRInt, (XtPointer) &defaultScrollLines},
{XtNsignalInhibit,XtCSignalInhibit,XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, misc.signalInhibit),
XtRBoolean, (XtPointer) &defaultFALSE},
#if OPT_NUM_LOCK
{XtNnumLock, XtCNumLock, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, misc.real_NumLock),
XtRBoolean, (XtPointer) &defaultTRUE},
#endif
#if OPT_SHIFT_KEYS
{XtNshiftKeys, XtCShiftKeys, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, misc.shift_keys),
XtRBoolean, (XtPointer) &defaultTRUE},
#endif
#if OPT_TEK4014
{XtNtekInhibit, XtCTekInhibit, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, misc.tekInhibit),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNtekSmall, XtCTekSmall, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, misc.tekSmall),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNtekStartup, XtCTekStartup, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.TekEmu),
XtRBoolean, (XtPointer) &defaultFALSE},
#endif
{XtNtiteInhibit, XtCTiteInhibit, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, misc.titeInhibit),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNvisualBell, XtCVisualBell, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.visualbell),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNallowSendEvents, XtCAllowSendEvents, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.allowSendEvents),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNawaitInput, XtCAwaitInput, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.awaitInput),
XtRBoolean, (XtPointer) &defaultFALSE},
{"font1", "Font1", XtRString, sizeof(String),
XtOffsetOf(XtermWidgetRec, screen.menu_font_names[fontMenu_font1]),
XtRString, (XtPointer) NULL},
{"font2", "Font2", XtRString, sizeof(String),
XtOffsetOf(XtermWidgetRec, screen.menu_font_names[fontMenu_font2]),
XtRString, (XtPointer) NULL},
{"font3", "Font3", XtRString, sizeof(String),
XtOffsetOf(XtermWidgetRec, screen.menu_font_names[fontMenu_font3]),
XtRString, (XtPointer) NULL},
{"font4", "Font4", XtRString, sizeof(String),
XtOffsetOf(XtermWidgetRec, screen.menu_font_names[fontMenu_font4]),
XtRString, (XtPointer) NULL},
{"font5", "Font5", XtRString, sizeof(String),
XtOffsetOf(XtermWidgetRec, screen.menu_font_names[fontMenu_font5]),
XtRString, (XtPointer) NULL},
{"font6", "Font6", XtRString, sizeof(String),
XtOffsetOf(XtermWidgetRec, screen.menu_font_names[fontMenu_font6]),
XtRString, (XtPointer) NULL},
#if OPT_DEC_CHRSET
{XtNfontDoublesize, XtCFontDoublesize, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.font_doublesize),
XtRBoolean, (XtPointer) &defaultTRUE},
{XtNcacheDoublesize, XtCCacheDoublesize, XtRInt, sizeof(int),
XtOffsetOf(XtermWidgetRec, screen.cache_doublesize),
XtRInt, (XtPointer) &default_NUM_CHRSET},
#endif
#if OPT_INPUT_METHOD
{XtNinputMethod, XtCInputMethod, XtRString, sizeof(char*),
XtOffsetOf(XtermWidgetRec, misc.input_method),
XtRString, (XtPointer)NULL},
{XtNpreeditType, XtCPreeditType, XtRString, sizeof(char*),
XtOffsetOf(XtermWidgetRec, misc.preedit_type),
XtRString, (XtPointer)"Root"},
{XtNopenIm, XtCOpenIm, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, misc.open_im),
XtRImmediate, (XtPointer)TRUE},
#endif
#if OPT_ISO_COLORS
COLOR_RES(XtNcolor0, screen.Acolors[COLOR_0], DFT_COLOR("black")),
COLOR_RES(XtNcolor1, screen.Acolors[COLOR_1], DFT_COLOR("red3")),
COLOR_RES(XtNcolor2, screen.Acolors[COLOR_2], DFT_COLOR("green3")),
COLOR_RES(XtNcolor3, screen.Acolors[COLOR_3], DFT_COLOR("yellow3")),
COLOR_RES(XtNcolor4, screen.Acolors[COLOR_4], DFT_COLOR("blue3")),
COLOR_RES(XtNcolor5, screen.Acolors[COLOR_5], DFT_COLOR("magenta3")),
COLOR_RES(XtNcolor6, screen.Acolors[COLOR_6], DFT_COLOR("cyan3")),
COLOR_RES(XtNcolor7, screen.Acolors[COLOR_7], DFT_COLOR("gray90")),
COLOR_RES(XtNcolor8, screen.Acolors[COLOR_8], DFT_COLOR("gray30")),
COLOR_RES(XtNcolor9, screen.Acolors[COLOR_9], DFT_COLOR("red")),
COLOR_RES(XtNcolor10, screen.Acolors[COLOR_10], DFT_COLOR("green")),
COLOR_RES(XtNcolor11, screen.Acolors[COLOR_11], DFT_COLOR("yellow")),
COLOR_RES(XtNcolor12, screen.Acolors[COLOR_12], DFT_COLOR("blue")),
COLOR_RES(XtNcolor13, screen.Acolors[COLOR_13], DFT_COLOR("magenta")),
COLOR_RES(XtNcolor14, screen.Acolors[COLOR_14], DFT_COLOR("cyan")),
COLOR_RES(XtNcolor15, screen.Acolors[COLOR_15], DFT_COLOR("white")),
#if OPT_256_COLORS
# include <256colres.h>
#elif OPT_88_COLORS
# include <88colres.h>
#endif
COLOR_RES(XtNcolorBD, screen.Acolors[COLOR_BD], DFT_COLOR(XtDefaultForeground)),
COLOR_RES(XtNcolorBL, screen.Acolors[COLOR_BL], DFT_COLOR(XtDefaultForeground)),
COLOR_RES(XtNcolorUL, screen.Acolors[COLOR_UL], DFT_COLOR(XtDefaultForeground)),
{XtNcolorMode, XtCColorMode, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.colorMode),
XtRBoolean, (XtPointer) &defaultCOLORMODE},
{XtNcolorULMode, XtCColorMode, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.colorULMode),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNcolorBDMode, XtCColorMode, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.colorBDMode),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNcolorBLMode, XtCColorMode, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.colorBLMode),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNcolorAttrMode, XtCColorMode, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.colorAttrMode),
XtRBoolean, (XtPointer) &defaultFALSE},
{XtNboldColors, XtCColorMode, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.boldColors),
XtRBoolean, (XtPointer) &defaultTRUE},
#endif /* OPT_ISO_COLORS */
{XtNdynamicColors, XtCDynamicColors, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, misc.dynamicColors),
XtRBoolean, (XtPointer) &defaultTRUE},
#if OPT_HIGHLIGHT_COLOR
Cres(XtNhighlightColor, screen.highlightcolor, XtDefaultForeground),
#endif /* OPT_HIGHLIGHT_COLOR */
{XtNboldMode, XtCBoldMode, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.bold_mode),
XtRBoolean, (XtPointer) &defaultTRUE},
{XtNunderLine, XtCUnderLine, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.underline),
XtRBoolean, (XtPointer) &defaultTRUE},
{XtNdecTerminalID, XtCDecTerminalID, XtRString, sizeof(String),
XtOffsetOf(XtermWidgetRec, screen.term_id),
XtRString, (XtPointer) DFT_DECID},
#ifndef NO_ACTIVE_ICON
{"activeIcon", "ActiveIcon", XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, misc.active_icon),
XtRString, "false"},
{"iconFont", "IconFont", XtRFontStruct, sizeof(XFontStruct),
XtOffsetOf(XtermWidgetRec, screen.fnt_icon),
XtRString, (XtPointer)XtExtdefaultfont},
{"iconBorderWidth", XtCBorderWidth, XtRInt, sizeof(int),
XtOffsetOf(XtermWidgetRec, misc.icon_border_width),
XtRString, "2"},
{"iconBorderColor", XtCBorderColor, XtRPixel, sizeof(Pixel),
XtOffsetOf(XtermWidgetRec, misc.icon_border_pixel),
XtRString, XtExtdefaultbackground},
#endif /* NO_ACTIVE_ICON */
#if OPT_TOOLBAR
{XtNmenuBar, XtCMenuBar, XtRWidget, sizeof(Widget),
XtOffsetOf(XtermWidgetRec, screen.fullVwin.menu_bar),
XtRWidget, (XtPointer) 0},
{XtNmenuHeight, XtCMenuHeight, XtRInt, sizeof(int),
XtOffsetOf(XtermWidgetRec, screen.fullVwin.menu_height),
XtRString, "25"},
#endif
#if OPT_WIDE_CHARS
{XtNutf8, XtCUtf8, XtRInt, sizeof(int),
XtOffsetOf(XtermWidgetRec, screen.utf8_mode),
XtRString, defaultUTF8},
{XtNwideChars, XtCWideChars, XtRBoolean, sizeof(Boolean),
XtOffsetOf(XtermWidgetRec, screen.wide_chars),
XtRBoolean, (XtPointer) &defaultFALSE},
#endif
};
static Boolean VTSetValues (Widget cur, Widget request, Widget new_arg, ArgList args, Cardinal *num_args);
static void VTClassInit (void);
static void VTDestroy (Widget w);
static void VTExpose (Widget w, XEvent *event, Region region);
static void VTInitialize (Widget wrequest, Widget new_arg, ArgList args, Cardinal *num_args);
static void VTRealize (Widget w, XtValueMask *valuemask, XSetWindowAttributes *values);
static void VTResize (Widget w);
#if OPT_I18N_SUPPORT && OPT_INPUT_METHOD
static void VTInitI18N (void);
#endif
#ifdef VMS
globaldef {"xtermclassrec"} noshare
#else
static
#endif /* VMS */
WidgetClassRec xtermClassRec = {
{
/* core_class fields */
/* superclass */ (WidgetClass) &widgetClassRec,
/* class_name */ "VT100",
/* widget_size */ sizeof(XtermWidgetRec),
/* class_initialize */ VTClassInit,
/* class_part_initialize */ NULL,
/* class_inited */ FALSE,
/* initialize */ VTInitialize,
/* initialize_hook */ NULL,
/* realize */ VTRealize,
/* actions */ actionsList,
/* num_actions */ XtNumber(actionsList),
/* resources */ resources,
/* num_resources */ XtNumber(resources),
/* xrm_class */ NULLQUARK,
/* compress_motion */ TRUE,
/* compress_exposure */ FALSE,
/* compress_enterleave */ TRUE,
/* visible_interest */ FALSE,
/* destroy */ VTDestroy,
/* resize */ VTResize,
/* expose */ VTExpose,
/* set_values */ VTSetValues,
/* set_values_hook */ NULL,
/* set_values_almost */ NULL,
/* get_values_hook */ NULL,
/* accept_focus */ NULL,
/* version */ XtVersion,
/* callback_offsets */ NULL,
/* tm_table */ defaultTranslations,
/* query_geometry */ XtInheritQueryGeometry,
/* display_accelerator*/ XtInheritDisplayAccelerator,
/* extension */ NULL
}
};
#ifdef VMS
globaldef {"xtermwidgetclass"} noshare
#endif /* VMS */
WidgetClass xtermWidgetClass = (WidgetClass)&xtermClassRec;
#if OPT_ISO_COLORS
/*
* The terminal's foreground and background colors are set via two mechanisms:
* text (cur_foreground, cur_background values that are passed down to
* XDrawImageString and XDrawString)
* area (X11 graphics context used in XClearArea and XFillRectangle)
*/
void SGR_Foreground(int color)
{
register TScreen *screen = &term->screen;
Pixel fg;
/* FIXME HideCursor(); */
if (color >= 0) {
term->flags |= FG_COLOR;
} else {
term->flags &= ~FG_COLOR;
}
fg = getXtermForeground(term->flags, color);
term->cur_foreground = color;
XSetForeground(screen->display, NormalGC(screen), fg);
XSetBackground(screen->display, ReverseGC(screen), fg);
if (NormalGC(screen) != NormalBoldGC(screen)) {
XSetForeground(screen->display, NormalBoldGC(screen), fg);
XSetBackground(screen->display, ReverseBoldGC(screen), fg);
}
}
void SGR_Background(int color)
{
register TScreen *screen = &term->screen;
Pixel bg;
/*
* An indexing operation may have set screen->scroll_amt, which would
* normally result in calling FlushScroll() in WriteText(). However,
* if we're changing the background color now, then the new value
* should not apply to the pending blank lines.
*/
if (screen->scroll_amt && (color != term->cur_background))
FlushScroll(screen);
if (color >= 0) {
term->flags |= BG_COLOR;
} else {
term->flags &= ~BG_COLOR;
}
bg = getXtermBackground(term->flags, color);
term->cur_background = color;
XSetBackground(screen->display, NormalGC(screen), bg);
XSetForeground(screen->display, ReverseGC(screen), bg);
if (NormalGC(screen) != NormalBoldGC(screen)) {
XSetBackground(screen->display, NormalBoldGC(screen), bg);
XSetForeground(screen->display, ReverseBoldGC(screen), bg);
}
}
/* Invoked after updating bold/underline flags, computes the extended color
* index to use for foreground. (See also 'extract_fg()').
*/
static void
setExtendedFG(void)
{
int fg = term->sgr_foreground;
if (term->screen.colorAttrMode
|| (fg < 0)) {
if (term->screen.colorULMode && (term->flags & UNDERLINE))
fg = COLOR_UL;
if (term->screen.colorBDMode && (term->flags & BOLD))
fg = COLOR_BD;
if (term->screen.colorBLMode && (term->flags & BLINK))
fg = COLOR_BL;
}
/* This implements the IBM PC-style convention of 8-colors, with one
* bit for bold, thus mapping the 0-7 codes to 8-15. It won't make
* much sense for 16-color applications, but we keep it to retain
* compatiblity with ANSI-color applications.
*/
#if OPT_PC_COLORS /* XXXJTL should be settable at runtime (resource or OSC?) */
if (term->screen.boldColors
&& (!term->sgr_extended)
&& (fg >= 0)
&& (fg < 8)
&& (term->flags & BOLD))
fg |= 8;
#endif
SGR_Foreground(fg);
}
static void
reset_SGR_Foreground(void)
{
term->sgr_foreground = -1;
term->sgr_extended = 0;
setExtendedFG();
}
static void
reset_SGR_Colors(void)
{
reset_SGR_Foreground();
SGR_Background(-1);
}
#endif /* OPT_ISO_COLORS */
void resetCharsets(TScreen *screen)
{
screen->gsets[0] = 'B'; /* ASCII_G */
screen->gsets[1] = '0'; /* line drawing */
screen->gsets[2] = 'B'; /* DEC supplemental. */
screen->gsets[3] = 'B';
screen->curgl = 0; /* G0 => GL. */
screen->curgr = 2; /* G2 => GR. */
screen->curss = 0; /* No single shift. */
}
/* allocate larger buffer if needed/possible */
#define SafeAlloc(type, area, used, size) \
type *new_string = area; \
unsigned new_length = size; \
if (new_length == 0) { \
new_length = 256; \
new_string = (type *)malloc(new_length * sizeof(type)); \
} else if (used+1 >= new_length) { \
new_length = size * 2; \
new_string = (type *)malloc(new_length * sizeof(type)); \
if (new_string != 0 \
&& area != 0 \
&& used != 0) \
memcpy(new_string, area, used * sizeof(type)); \
}
#define MotionOff( s, t ) \
if ((s)->event_mask & PointerMotionMask) { \
(s)->event_mask |= ButtonMotionMask; \
(s)->event_mask &= ~PointerMotionMask; \
XSelectInput(XtDisplay((t)), XtWindow((t)), (s)->event_mask); \
}
static void VTparse(void)
{
/* Buffer for processing printable text */
static IChar *print_area;
static size_t print_size, print_used;
/* Buffer for processing strings (e.g., OSC ... ST) */
static Char *string_area;
static size_t string_size, string_used;
#if OPT_VT52_MODE
static Bool vt52_cup = FALSE;
#endif
Const PARSE_T *groundtable = ansi_table;
TScreen *screen = &term->screen;
Const PARSE_T *parsestate;
unsigned int c;
Char *cp;
int row, col, top, bot, scstype, count;
Bool private_function; /* distinguish private-mode from standard */
int string_mode; /* nonzero iff we're processing a string */
int lastchar; /* positive iff we had a graphic character */
int nextstate;
int laststate;
/* We longjmp back to this point in VTReset() */
(void)setjmp(vtjmpbuf);
#if OPT_VT52_MODE
groundtable = screen->ansi_level ? ansi_table : vt52_table;
#else
groundtable = ansi_table;
#endif
parsestate = groundtable;
scstype = 0;
private_function = False;
string_mode = 0;
lastchar = -1; /* not a legal IChar */
nextstate = -1; /* not a legal state */
for( ; ; ) {
int thischar = -1;
c = doinput();
/* Intercept characters for printer controller mode */
if (screen->printer_controlmode == 2) {
if ((c = xtermPrinterControl(c)) == 0)
continue;
}
/*
* VT52 is a little ugly in the one place it has a parameterized
* control sequence, since the parameter falls after the character
* that denotes the type of sequence.
*/
#if OPT_VT52_MODE
if (vt52_cup) {
param[nparam++] = (c & 0x7f) - 32;
if (nparam < 2)
continue;
vt52_cup = FALSE;
if((row = param[0]) < 0)
row = 0;
if((col = param[1]) < 0)