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sources/edt/keycom.bli
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%TITLE 'KEYCOM - get a keypad command'
MODULE KEYCOM ( ! Get a keypad command
IDENT = '3-002' ! File: KEYCOM.BLI Edit: CJG3002
) =
BEGIN
!
! COPYRIGHT (c) 1981, 1985 BY
! DIGITAL EQUIPMENT CORPORATION, MAYNARD, MASS.
! ALL RIGHTS RESERVED.
!
! THIS SOFTWARE IS FURNISHED UNDER A LICENSE AND MAY BE USED AND COPIED
! ONLY IN ACCORDANCE WITH THE TERMS OF SUCH LICENSE AND WITH THE
! INCLUSION OF THE ABOVE COPYRIGHT NOTICE. THIS SOFTWARE OR ANY OTHER
! COPIES THEREOF MAY NOT BE PROVIDED OR OTHERWISE MADE AVAILABLE TO ANY
! OTHER PERSON. NO TITLE TO AND OWNERSHIP OF THE SOFTWARE IS HEREBY
! TRANSFERRED.
!
! THE INFORMATION IN THIS SOFTWARE IS SUBJECT TO CHANGE WITHOUT NOTICE
! AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY DIGITAL EQUIPMENT
! CORPORATION.
!
! DIGITAL ASSUMES NO RESPONSIBILITY FOR THE USE OR RELIABILITY OF ITS
! SOFTWARE ON EQUIPMENT WHICH IS NOT SUPPLIED BY DIGITAL.
!
!++
! FACILITY: EDT -- The DEC Standard Editor
!
! ABSTRACT:
!
! Get a keypad command.
!
! ENVIRONMENT: Runs at any access mode - AST reentrant
!
! AUTHOR: Bob Kushlis, CREATION DATE: April 7, 1979
!
! MODIFIED BY:
!
! 1-001 - Original. DJS 24-Feb-1981. This module was created by
! extracting routine EDT$$GET_KPADCMD from module KEYTRAN.
! 1-002 - Regularize headers. JBS 09-Mar-1981
! 1-003 - Add return values. JBS 02-Oct-1981
! 1-004 - Check one more return value, and add a variable to call to
! EDT$$KPAD_INP. STS 21-Oct-1981
! 1-005 - Set a flag if control C actually aborts something. JBS 25-May-1982
! 1-006 - In NOKEYPAD mode copy control characters into the buffer. JBS 07-Jun-1982
! 1-007 - Pass flag to EDT$$NXT_CMDCH so that it will accept repeat counts. STS 16-Jun-1982
! 1-008 - Add reverse video to nokeypad command input. SMB 24-Jun-1982
! 1-009 - New implementation of defined keys. JBS 12-Aug-1982
! 1-010 - Add another control C check since a control C can occur
! in edt$$trn_kstr. STS 24-Nov-1982
! 1-011 - Don't call EDT$$ERA_MSGLN unnecessarily. JBS 20-Jan-1983
! 3-001 - Add updates from V3 sources. GB 29-Apr-1983
! 3-002 - Call EDT$$TI_RDCMDLN directly. CJG 3-Jan-1983
!--
%SBTTL 'Declarations'
!
! TABLE OF CONTENTS:
!
REQUIRE 'EDTSRC:TRAROUNAM';
FORWARD ROUTINE
EDT$$GET_KPADCMD; ! Get a keypad command
!
! INCLUDE FILES:
!
REQUIRE 'EDTSRC:EDTREQ';
LIBRARY 'EDTSRC:KEYPADDEF';
!
! MACROS:
!
! NONE
!
! EQUATED SYMBOLS:
!
! NONE
!
! OWN STORAGE:
!
! NONE
!
! EXTERNAL REFERENCES:
!
! In the routine
%SBTTL 'EDT$$GET_KPADCMD - get a keypad command'
GLOBAL ROUTINE EDT$$GET_KPADCMD ! Get a keypad command
=
!++
! FUNCTIONAL DESCRIPTION:
!
! Get a keypad command. Characters are read and translated until a complete
! command is seen. The characters are handled as follows:
!
! Keypad and control characters are translated, and if they end in a '.' then the
! command is complete
!
! Other characters are treated as insertions and always complete.
!
! FORMAL PARAMETERS:
!
! NONE
!
! IMPLICIT INPUTS:
!
! CMD_BUF
! CMD_PTR
! TIN_ECHOFLG
! MSGFLG
! KPAD
!
! IMPLICIT OUTPUTS:
!
! CMD_END
! CC_DONE
!
! ROUTINE VALUE:
!
! 1 = ok, 0 = control C, 2 = end of journal file
!
! SIDE EFFECTS:
!
! NONE
!
!--
BEGIN
EXTERNAL ROUTINE
EDT$$SC_REVID, ! Turn on reverse video for nokeypad commands
EDT$$CHK_CC, ! Check for control C
EDT$$ERA_MSGLN : NOVALUE, ! Erase the message line
EDT$$NXT_CMDCH, ! Get the next command character
EDT$$TRN_KSTR, ! Build the command buffer
EDT$$PUT_CMDCH : NOVALUE, ! Put a character in the command buffer
EDT$$TI_RDCMDLN,
EDT$$SC_NONREVID : NOVALUE; ! Make sure we are not in reverse video
EXTERNAL
CMD_BUF, ! Command buffer
CMD_PTR, ! Pointer to next char in command buffer
CMD_END, ! Pointer to end of info in command buffer
KPAD, ! Keypad mode flag
CC_DONE, ! Set to 1 if control C actually aborts something
TIN_ECHOFLG,
MSGFLG;
LOCAL
C,
RES_TERM,
SUCCEED,
KEYS_SEEN;
KEYS_SEEN = 0;
!+
! Loop until command is complete.
!-
WHILE 1 DO
BEGIN
!+
! Get the next command character. If the command was aborted, return.
!-
SUCCEED = EDT$$NXT_CMDCH (C, 1);
IF (.SUCCEED NEQ 1) THEN RETURN (.SUCCEED);
!+
! Check for control C and abort the command.
!-
IF EDT$$CHK_CC ()
THEN
BEGIN
CMD_END = CH$PTR (CMD_BUF,, BYTE_SIZE);
IF .KEYS_SEEN THEN CC_DONE = 1;
RETURN (0);
END;
KEYS_SEEN = 1;
!+
! Erase the message line and make sure we are in reverse video mode
! if this is a nokeypad command
!-
IF ((.MSGFLG NEQ 0) OR .TIN_ECHOFLG) THEN EDT$$ERA_MSGLN ();
IF ( NOT .KPAD) THEN EDT$$SC_REVID ();
SELECTONE .C OF
SET
[0 TO 31] :
!+
! Control character: if in keypad mode, translate it.
!-
IF .KPAD
THEN
BEGIN
IF EDT$$TRN_KSTR (.C, 1, 0) THEN RETURN (1);
END
ELSE
BEGIN
!+
! In nokeypad mode, copy characters into the buffer.
!-
IF (EDT$$TI_RDCMDLN (.C, .CMD_PTR, CMD_PTR, ASC_K_CR, RES_TERM) EQL 2)
THEN RETURN (2);
CMD_END = .CMD_PTR;
RETURN (1);
END;
[ASC_K_DEL, K_KPAD_BASE TO K_KEY_MAX] :
!+
! DEL, keypad or function key: always translate.
!-
IF EDT$$TRN_KSTR (.C, 1, 0) THEN RETURN (1);
[OTHERWISE] :
!+
! Insertion character: make the command Ic^Z.
!-
IF .KPAD
THEN
BEGIN
EDT$$PUT_CMDCH (%C'I', 0);
EDT$$PUT_CMDCH (.C, 0);
EDT$$PUT_CMDCH (ASC_K_CTRL_Z, 0);
CMD_END = .CMD_PTR;
RETURN (1);
END
ELSE
BEGIN
!+
! In nokeypad mode, copy characters into the buffer.
!-
IF (EDT$$TI_RDCMDLN (.C, .CMD_PTR, CMD_PTR, ASC_K_CR, RES_TERM) EQL 2)
THEN RETURN (2);
CMD_END = .CMD_PTR;
RETURN (1);
END;
TES;
!+
! Check for control C and abort the command.
!-
IF EDT$$CHK_CC ()
THEN
BEGIN
CMD_END = CH$PTR (CMD_BUF,, BYTE_SIZE);
IF .KEYS_SEEN THEN CC_DONE = 1;
RETURN (0);
END;
END;
RETURN (1);
END; ! of routine EDT$$GET_KPADCMD
END
ELUDOM