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6-1-sources/edt.bli
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%TITLE 'EDT - STARTUP MODULE'
MODULE EDT (
IDENT = '1-005', ! File: EDT.B36 Edit: GB1005
MAIN = EDIT$,
VERSION = '1(34)' ! EDT's version number
) =
BEGIN
!
! COPYRIGHT (c) 1984, 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:
!
! This is the startup module for EDT
!
! ENVIRONMENT: Runs on TOPS20
!
! AUTHOR: Chris Gill, CREATION DATE: 13-Jun-1983
!
! MODIFIED BY:
!
! 1-001 - Original. This module was created by combining MAIN and STARTEDT
! both modified for TOPS20 operation. CJG 13-Jun-1983
! 1-002 - Move EDT$$PA_CMDLN to INIT to prevent parsed data being lost. CJG 27-Jun-1983
! 1-003 - Deal with the CREATE command (EDT$M_NEWFILE). CJG 12-Jul-1983
! 1-004 - Add EDT$$GET_LOGDIR so that we search the login directory. CJG 7-Oct-1983
! 1-005 - Add a VERSION parameter to the MODULE declaration. GB 19-Jul-1984
!--
%SBTTL 'Declarations'
!
! TABLE OF CONTENTS:
!
REQUIRE 'EDTSRC:TRAROUNAM';
FORWARD ROUTINE
EDIT$;
!
! INCLUDE FILES:
!
REQUIRE 'EDTSRC:EDTREQ';
!
! MACROS:
!
! NONE
!
!<BLF/FORMAT>
!
! EQUATED SYMBOLS:
!
EXTERNAL LITERAL
EDT$M_NOCREATE,
EDT$M_NOJOURNAL,
EDT$M_COMMAND,
EDT$M_NOCOMMAND,
EDT$M_NEWFILE,
EDT$K_OPEN_IN_OUT,
EDT$K_OPEN_INPUT,
EDT$K_INPUT_FILE,
EDT$K_JOURNAL_FILE,
EDT$K_OPEN_OUTPUT_NOSEQ,
EDT$K_COMMAND_FILE,
EDT$K_CLOSE;
!
! OWN STORAGE:
!
! NONE
!
! EXTERNAL REFERENCES:
!
! Inside the routine.
!-
%SBTTL 'EDIT$ - set up and call EDT'
ROUTINE EDIT$ ! set up and call EDT
=
!++
! FUNCTIONAL DESCRIPTION:
!
! The main entry point for the editor.
!
! FORMAL PARAMETERS:
!
! NONE
!
! IMPLICIT INPUTS:
!
! NONE
!
! IMPLICIT OUTPUTS:
!
! INP_NAM
! OUT_NAM
! CMD_NAM
! COM_NAM
! JOU_NAM
! LASTMSG
! CMD_BUF
! CMD_END
!
! ROUTINE VALUE:
!
! Normally 1 or EDT$_EDITORABO
!
! SIDE EFFECTS:
!
! Performs an edit.
!
! NOTES:
!
! OPTIONS
! bit 0 = /RECOVER
! bit 1 = /COMMAND
! bit 2 = /NOJOURNAL
! bit 3 = /NOOUTPUT
! bit 4 = /NOCOMMAND
! bit 5 = /NOCREATE
! bit 6 = CREATE command
!--
BEGIN
EXTERNAL ROUTINE
EDT$$SYS_EXI, ! Return to system (with status)
EDT$FILEIO, ! Perform file io
EDT$$EXE_CMD, ! Execute a command
EDT$$TERMIN_RCOVMOD : NOVALUE, ! Handle end of journal file during /RECOVER
EDT$$INIT, ! Do the initial processing
EDT$$TERMIN, ! Do the final processing
EDT$$FIOPN_ERR : NOVALUE, ! Print a message about a file error, with file name
EDT$$TY_CURLN, ! Type out the current line
EDT$$FMT_MSG : NOVALUE, ! Format and print a message
EDT$$GET_LOGDIR : NOVALUE, ! Get login directory and device
EDT$$SET_COMFNAM; ! Open and close command files
EXTERNAL
CMD_NAM : BLOCK, ! Command file name
OUT_NAM : BLOCK, ! Output file name
INP_NAM : BLOCK, ! input file name
JOU_NAM : BLOCK, ! Name of journal file
CMD_NAM_DEF1 : REF BLOCK, ! First default command spec
CMD_NAM_DEF2 : REF BLOCK, ! Second default command spec
CMD_DFLT : REF BLOCK, ! Alternative form of CMD_NAM_DEF2
EXITD, ! Did we exit with the last command?
RCOV_MOD, ! do a recovery flag
EDIT_MOD, ! Current editing mode
EDIT_DFLTMOD, ! Default editing mode
FNF_MSGFLG, ! File not found message flag
IOFI_NFND, ! 1 = open failed due to file not found
OPTIONS : BITVECTOR [36], ! Options bits
LASTMSG, ! Message for change mode to print
CMD_PTR, ! Pointer to current location in command buffer
CMD_BUF, ! Command buffer
CMD_END, ! Pointer to end of command buffer
CC_DONE; ! 1 = control C actually aborted something
MESSAGES ((COMFILNEX, COMFILNOP, COMFILCLO, NOJNLFIL, INPFILNEX,
ABOBYCC, CTRC__IGN, EDITORABO));
LOCAL
STATUS,
PRIMARY_FILE_CONDITION,
STRING_LENGTH;
!+
! Do the initial processing.
!-
PRIMARY_FILE_CONDITION = EDT$$INIT ();
!+
! If initialization failed, abort right now.
!-
IF (.PRIMARY_FILE_CONDITION EQL 3) THEN EDT$$SYS_EXI (EDT$_EDITORABO);
!+
! If /NOCREATE was specified then exit if file was not found
!-
IF ((.PRIMARY_FILE_CONDITION EQL 0) AND ((.OPTIONS AND EDT$M_NOCREATE) NEQ 0))
THEN
BEGIN
IF .FNF_MSGFLG THEN EDT$$FMT_MSG (EDT$_INPFILNEX);
EDT$$SYS_EXI (-1);
END;
!+
! Open the journal file. If recovery was specified, open it so we can read
! from it.
!-
IF .RCOV_MOD
THEN
BEGIN
STATUS = EDT$FILEIO (EDT$K_OPEN_IN_OUT, EDT$K_JOURNAL_FILE, JOU_NAM);
IF ( NOT .STATUS)
THEN
BEGIN
EDT$$FIOPN_ERR (EDT$_NOJNLFIL, JOU_NAM);
EDT$$SYS_EXI (EDT$_NOJNLFIL);
END;
END
ELSE
!+
! We are not in recovery mode; just open the journal file for write.
!-
IF ((.OPTIONS AND EDT$M_NOJOURNAL) EQL 0) ! NOT /NOJOURNAL
THEN
BEGIN
STATUS = EDT$FILEIO (EDT$K_OPEN_OUTPUT_NOSEQ, EDT$K_JOURNAL_FILE, JOU_NAM);
END;
!+
! Make sure the journal file was opened.
!-
IF (( NOT .STATUS) AND (.OPTIONS AND EDT$M_NOJOURNAL) EQL 0)
THEN
BEGIN
EDT$$FIOPN_ERR (EDT$_NOJNLFIL, JOU_NAM);
EDT$$SYS_EXI (EDT$_NOJNLFIL);
END;
!+
! Execute the startup file, if one was provided. The startup file is always executed
! in line mode.
!-
EDIT_MOD = LINE_MODE;
IF ((.OPTIONS AND EDT$M_NOCOMMAND) EQL 0)
THEN
BEGIN
IF (.CMD_NAM [DSC$W_LENGTH] EQL 0)
THEN
BEGIN
!+
! No command file name was provided, use the default. Note that there are
! two default names; if the first is not found we try the second.
!-
STATUS = EDT$$SET_COMFNAM (CMD_NAM_DEF1);
IF ( NOT .STATUS)
THEN
BEGIN
STATUS = EDT$$SET_COMFNAM (CMD_NAM_DEF2);
IF ( NOT .STATUS)
THEN
BEGIN
EDT$$GET_LOGDIR (CMD_DFLT, CMD_NAM);
STATUS = EDT$$SET_COMFNAM (CMD_NAM);
END;
END;
END
ELSE
STATUS = EDT$$SET_COMFNAM (CMD_NAM);
IF .STATUS
THEN
BEGIN
IF (EDT$$EXE_CMD (INP_COMMAND) EQL 2)
THEN
BEGIN
!+
! The startup file was terminated by control C.
!-
IF .CC_DONE THEN EDT$$FMT_MSG (EDT$_ABOBYCC) ELSE EDT$$FMT_MSG (EDT$_CTRC__IGN);
CMD_PTR = CH$PTR (CMD_BUF, 0, BYTE_SIZE);
CMD_END = .CMD_PTR;
!+
! Make sure we stay in line mode so the message is visible.
!-
EDIT_DFLTMOD = LINE_MODE;
END;
END
ELSE
IF ((.OPTIONS AND EDT$M_COMMAND) NEQ 0)
THEN
BEGIN
EDT$$FIOPN_ERR (IF .IOFI_NFND
THEN EDT$_COMFILNEX
ELSE EDT$_COMFILNOP, CMD_NAM);
EDT$$SYS_EXI (EDT$_COMFILNOP)
END;
END;
!+
! Make sure the command file is closed, and the name is null.
!-
STATUS = EDT$$SET_COMFNAM (0); ! Close the command file
IF ( NOT .STATUS) THEN EDT$$SYS_EXI (EDT$_COMFILCLO);
!+
! Use the default mode setting.
!-
EDIT_MOD = .EDIT_DFLTMOD;
!+
! Give an error message if the primary file was not found or does not have standard format.
! unless we are about to enter change mode, in which case defer the message.
! The message is not needed if the original command was CREATE.
!-
IF ((.OPTIONS AND EDT$M_NEWFILE) EQL 0)
THEN
BEGIN
CASE .PRIMARY_FILE_CONDITION FROM 0 TO 2 OF
SET
[0] :
IF (.EDIT_MOD EQL LINE_MODE)
THEN
BEGIN
IF .FNF_MSGFLG THEN EDT$$FMT_MSG (EDT$_INPFILNEX);
END
ELSE
IF .FNF_MSGFLG THEN LASTMSG = EDT$_INPFILNEX;
[1] :
BEGIN
0
END;
[2] :
BEGIN
0
END;
TES;
END;
!+
! If we are in recovery mode, execute the remainder of the journal file.
! (Part of the journal file may have been used to respond to SUBSTITUTE/QUERY
! commands in the startup file.)
!-
IF (.RCOV_MOD)
THEN
BEGIN
IF (EDT$$EXE_CMD (INP_JOURNAL) EQL 2)
THEN
BEGIN
!+
! The recovery process was interrupted by a control C. Bail out.
!-
IF .CC_DONE THEN RETURN (EDT$_ABOBYCC) ELSE EDT$$SYS_EXI (EDT$_CTRC__IGN);
END;
EDT$$TERMIN_RCOVMOD ();
END;
!+
! If we are in line mode, then print the current line.
!-
IF (.EDIT_MOD EQL LINE_MODE)
THEN
BEGIN
EDT$$TY_CURLN ();
END;
!+
! And execute the main stream of commands.
!-
EDT$$EXE_CMD (INP_TERM);
!+
! Do the finalization processing.
!-
EDT$$TERMIN ();
RETURN (1);
END; ! of routine EDIT$
END ! of module EDT
ELUDOM