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t20src/filcom.mac
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TITLE FILCOM PROGRAM TO COMPARE FILES - V22A(122)
SUBTTL BOWERING/DMN/TWE/DMN/LCR/LLN/ILG/MFB/MS/PY/BAH 8-SEP-88
;COPYRIGHT (c) DIGITAL EQUIPMENT CORPORATION 1970,1979,1981,1984,1986,1988.
;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.
VFILCM==22 ;VERSION NUMBER
VUPDATE==1 ;DEC UPDATE
VEDIT==122 ;EDIT LEVEL
VCUSTOM==0
%%FLCV==<VCUSTOM>B2+<VFILCM>B11+<VUPDATE>B17+VEDIT
IFDEF .MCRV.,<.VERSION <%%FLCV>>
INTERNAL .JBVER
LOC <.JBVER==137>
EXP %%FLCV
RELOC 0
EXTERNAL .JBFF, .JBREL, .HELPR
SEARCH UUOSYM,MACTEN ;[74]
.REQUEST REL:HELPER ;[72] Add the request for HELPER
.DIRECTIVE FLBLST ;[100]
SALL ;[100]
TWOSEG
RELOC 400000 ;[101] IF MOVED UP, CHANGE BLANK LINE IM MEMORY BIT
COPYRIGHT (c) DIGITAL EQUIPMENT CORPORATION 1970,1988. ALL RIGHTS RESERVED.
\; END COPYRIGHT MACRO
ACDEV==1 ;COMMAND SCANNER ACCUMULATORS
ACFILE==2
ACEXT==3
ACDEL==4
ACPNTR==5
ACPPN==6 ;COMMAND SCANNER AC FOR PROJ,PROG #
CTL==0 ;I/O CHANNEL ASSIGNMENTS
IN1==1
IN2==2
W1=1
W2=2
W3=3
FIL=4 ;FILE # (0 IS FILE 1; 1 IS FILE 2)
F1=5 ;LINE POINTER FILE 1 (CONTAINS INTEGER)
F2=F1+1 ;DITTO FILE 2
FR=7 ;FLAG REGISTER (LH) AND FILE #(0 OR 1)(RH)
C=10 ;CONTAINS 1 CHAR FOR PROCESSING
T=11 ;TEMPORARY AC
TT=12 ;TEMP AC
LOWER=13 ;LOWER BOUND OF COMPARE
UPPER=14 ;UPPER BOUND OF COMPARE
CNT=15 ;WORD OR LOCATION COUNT (BINARY)
PP=17 ;PUSH DOWN POINTER
S1==F1
S2==F2
LPDL==50 ;LENGTH OF PUSH DOWN LIST(HELPER NEEDS MORE THAN 20)
NOFORM==1 ;DON'T OUTPUT FORM FEED
PAGSW==2
ENDSW==4 ;END SWITCH (SUPPRESS FORM-FEED IF FILES IDENTICAL)
EOF1SW==10 ;EOF SEEN ON FILE 1
EOF2SW==20 ;EOF SEEN ON FILE 2
IOTTY==40 ;OUTPUT TO TTY
SSWBIT==100 ;/S SWITCH - IGNORE SPACING
CSWBIT==200 ;/C SWITCH - IGNORE COMMENTS
ALLSW==400 ;/B SWITCH (ALLOWS COMPARING BLANK LINES)
ASWBIT==1000 ;/A SWITCH - LINE BY LINE COMPARE (ASCII)
WSWBIT==2000 ;/W SWITCH - WORD BY WORD COMPARE (BINARY)
XSWBIT==4000 ;/X SWITCH - EXPAND SAV FILES (BINARY)
CTYPF==10000 ;1 IF ANY CHARS TYPED FOR A COMMAND
WDFBIT==20000 ;DEFAULT /W (EXTENSION OF REL,XPN,CHN,DMP ETC)
XDFBIT==40000 ;DEFAULT /X (EXTENSION OF SAV,LOW,SVE)
HSGBIT==100000 ;DEFAULT HIGH SEGMENT FILE (EXT OF SHR OR HGH)
USWBIT==200000 ;LIST ENTIRE 2ND FILE, SHOWING CHANGES
EXEBIT==400000 ;COMPARING EXE FILES IN PROGRESS
ASCSW==ASWBIT!SSWBIT!CSWBIT!ALLSW!USWBIT ;ASCII SWITCHES
BINSW==WSWBIT!XSWBIT!WDFBIT!XDFBIT!HSGBIT!EXEBIT ;BINARY SWITCHES
MATCH==3 ;# LINES TO BE MATCHED
LPP==^D56 ;LINES/PAGE
MAXSFD==7 ;MAXIMUM NUMBER OF SFD'S ALLOWED
PTHADR==4 ;OFFSET TO PATH BLOCK
PTHPPN==6 ;OFFSET TO PPN IN BLOCK
PTHSFD==7 ;OFFSET TO SFD IN BLOCK
SUBTTL REVISION HISTORY
;START OF VERSION 20A
;17 ADD DATE75 HACK
;START OF VERSION 21
;20 (10181) CHECK FOR DOUBLE = IN BINARY MODE
;21 (14149) FORCE /1L IF /U IS SEEN TO PRINT ONE LINE CHANGES
; ONLY. 02-OCT-74, JNT.
;22 (12251) CHANGE WORD COUNT FIELD TO 36 BITS TO PROVIDE
; FOR FILES LONGER THAN 2048 DISK BLOCKS.
;23 MAKES FILCOM GET THE JOB'S PROJ.NUMBER IF ONLY
; PROGR.NUMBER IS SPECIFIED, AND THE PROGR.NUMBER IF ONLY
; PROJ.NUMBER IS SPECIFIED. 03-JAN-75, IB.
;24 (15168) FIX ERROR MESSAGES FOR FILES NOT FOUND ETC.
; ILG 29-JAN-75
;
;25 ADD SUPPORT FOR EXE FILE COMPARISONS
; SEB 12-MAR-75
;26 change "foo: z" to be "foo: block 1" so low seg
; won't be created
; ig
;
;27 make "tty:=foo.exe" work correctly.
; seb may 6
;30 MAKE SURE THAT THE '/Q' SWITCH TAKES A QUICK EXIT WHEN
; DIFFERENCES ARE FOUND.
; SPR # 19411 29-APR-76 LCR.
;
;
;31 CLEAR FILCOM'S BUFFERS DURING INITIALIZATION ROUTINE,
; TO AVOID GETTING "FILES ARE DIFFERENT" WHEN COMPARING
; BINARY FILES UNDER ASCII MODE.
; SPR # 10-19442 30-APR-76 LCR.
;
;32 FIX ADDRESS CALCULATION WHEN EXPANDING .SAV FILES. WHEN
; FILCOM FOUND ONE END-OF-FILE, IT COULD GET CONFUSED
; ABOUT THE ADDRESSES IN THE OTHER FILE.
; SPR # 10-19991, 27-JUL-76 LLN.
;
;33 CORRECT SOME PROBLEMS ASSOCIATED WITH LINE NUMBERS -- NAMELY,
; IF SKIPPING BLANK LINES, ALSO SKIP LINES HAVING ONLY A LINE
; NUMBER. ALSO, HANDLE PAGE MARKS AND BASIC FILES (WHICH
; DON'T ALWAYS HAVE TABS AFTER LINE NUMBERS) CORRECTLY
; BY EATING THE CHARACTER AFTER A LINE NUMBER ONLY IF IT
; IS A TAB.
; SPR # 10-20234, 13-AUG-76 LLN.
;34 Try harder to find multiple-line matches in update
; mode. This involves varying NUMLIN as the two files are
; read, if no /L is given by the user. This gives FILCOM
; the look-ahead capability lost by edit 21, without
; reintroducing the same problems edit 21 fixed.
; SPR # 10-20346, 15-Oct-76 LLN.
;
;35 ADD SUPPORT FOR SFD'S
; NO SPR 16-DEC-76 ILG
;
;
;36 HAVE HEADER CONTAIN TRUE PATH INFORMATION
; REGARDLESS OF TYPED IN COMMAND STRING
; NO SPR 16-DEC-76 ILG
;
;37 COMPARE EXE FILES PROPERLY WHEN ONE FILE HAS DIFFERENT
; MAP FROM THE OTHER AND THE SECOND IS SHORTER.
; NO SPR 16-DEC-76 ILG
;
;40 RESERVED FOR DECSYSTEM20.
;
;41 DON'T WRITE A NULL FILE IF NO DIFFERENCES ARE ENCOUNTERED ON
; A COMPARISON.
; SPR # 21610 ILG 16-DEC-76
;
;42 ALLOW A NULL SPECIFICATION FOR EXTENSION ON THE OUTPUT SIDE
; NO SPR ILG 16-DEC-76
;
;43 Handle .EXE files which have a directory
; entry which encompasses more than 1000 pages.
; LLN, SPR # 10-21429, 12-Jan-77
;
;Make this version 21A.
;
;44 Consider carriage-return to be an EOL character
; if it is not followed by LF, VT, or FF. This
; gets underlining right in update mode.
; LLN, SPR # 10-22466, 22-Apr-77
;
;45 Exit when through processing a command if ^Z was used
; to terminate it. LLN, SPR # 10-22854, 2-Jun-77
;
;46 Make buffers for headers big enough to handle the
; longest possible filespecs. LLN, SPR # 10-23644,
; 12-Sep-77
;
;47 Make all the month names 3 characters and lowercase.
; LLN, SPR # 10-23642, 3-Oct-77
;
;50 Accept a line-terminating character in lieu of a
; closing right-bracket. LLN, SPR # 10-23642, 4-Oct-77
;
;51 Keep creation dates in the headers lined up. Note:
; this edit supercedes edit 46. LLN, 5-Oct-77,
; SPR # 10-23642.
;
;52 Always produce a file in update mode, even if
; there are no differences. LLN, SPR # 10-23873,
; 9-Dec-77
;
;53 If second input filespec was a magtape, and /W,
; /E, or /X was specified, no comparison was done and
; the first file was merely listed. LLN, 15-Dec-77,
; SPR # 10-23863.
;
;54 Finish teaching FILCOM about large (more than
; a halfword) addresses in EXE files.
; LLN, SPR # 10-25025, 13-Feb-78
;
;55 Prevent sporadic bogus differences with line-numbered
; files. LLN, SPR # 10-25063, 7-Apr-78
;
;56 EXE files were always being expanded, even if you
; said /W. Also, FILCOM was not skipping over the entry
; vector portion of the directory properly, resulting
; in the ?NOT IN EXE FORMAT message. LLN, 12-Oct-78,
; SPR # 10-26742
;
;57 Stop reading binary files as soon as the user-specified
; upper limit is reached. LLN, no SPR, 8-Jan-79
;
;60 Make this version 21B for TOPS20 release. Fix address
; calculation for EXE files so that bogus differences are
; not reported. LLN, no SPR, 30-Jan-79
;
;61 Make FILCOM recognize the extension UNV and use word compare
; instead of the ASCII line compare. MFB, 5-May-80
; SPR # 10-28165
;
;62 Make the year in the header line of the output standard format
; (i.e. YY not YYYY). MFB, 5-May-80, SPR # 10-27778
;
;63 Accept memory location greater than 777777 and print it
; in the full word instead of regular halfword
; typeout also jump to the new page first time to help readability
; MS, 22-Jan-81 SPR 10-30551
;
;64 Deleted by edit 70.
; Do not compare blank line which has spaces, tab or ";" followed
; by CRLF on C and S switch
; MS, 19-May-81, SPR #20-16170
;
;65 Deleted by edit 71.
; Set the flag EFN to check the validity of the next character
; after processing a switch.
; MS, 21-Aug-81, SPR #10-31477
;
;66 Deleted by edit 70.
; Correct edit 64. Check the characters at GLINE3.
; MS, 26-Aug-81, SPR 10-31463
;
;67 Fix off by one bug which will make two .EXE files which are
; identical except for the directories appear very different.
; PY, 16-Sep-81 SPR 20-16787
;
;70 Delete edits 64 and 66.
; BAH, 10-Nov-81, SPR 10-31714.
;
;71 Delete edit 65; it broke command processing if a switch is specified
; first. Fix the original problem which allowed switches to be typed
; in the middle of a filename. This edit also reports if an unknown
; switch has been typed and if more than one filename or extension has
; been typed. Therefore, some previously successful commands may now
; produce an error message and terminate the process.
; BAH, 21-Dec-81, SPR 10-31822
;
;72 Add a .REQUEST HELPER so loading isn't special cased.
; BAH, 12-Jan-82.
;
;73 Make FILCOM recognize the extensions ATR, DBS, QUD, SCH, APL, OVL, and
; SYM to use word compare instead of ASCII.
; BAH, 12-Jan-82, SPR 10-32024.
;
;74 None. 2-Nov-82. BAH.
; Search UUOSYM and MACTEN. Then add big buffer open bit. Also clean up
; listing a bit for readability.
;
;75 None. 2-Nov-83. BAH.
; Extend edit 71 to report an error if a double extension is typed,
; (TT:=FOO.BAR.BAR,FOO.BAR). FILCOM LOOKUPed the file BAR.BAR.
;
;Start version 22
;76 None. 6-Jun-84. TL.
; Merge code from ADP to add /O support. Modify it so output file
; is same as before if no /O. (For SIRUS, others who read FILCOM output.)
;
;77 None. 25-Jul-84. TL.
; Fix /O/B test for page break.
;
;100 None. 25-Jul-84. TL.
; More of edit 74. Also, deal with CCL RUN UUOs.
;
;101 None. 25-Jul-84. TL.
; Try to get /U without /L to be a bit brighter.
;102 10-34246 31-Jul-84 BAH
; If the right square bracket of the second input file spec is missing
; in the command "=A.B[C,D,E],A.B[F,G]", FILCOM gives a LOOKUP error 23.
; Edit 50 did not catch all cases.
;
;103 Eklund 8-Aug-84 TL
; /O format didn't pass muster. I'd rather switch than fight.
;
;104 WXD 28-Aug-84 TL
; /O didn't count label offsets right in all cases. Throw
; out the ADP method, and invent our own bugs.
;
;105 TARL 18-Sep-84 TL
; Revoke edit 41 if /T specified. This makes monitor builds on
; the -10 work better.
;
;106 RAP 19-Sep-84 TL
; Fix obscure Ill mem ref in edit 101.
;
;107 10-35153 10-Apr-85 TL
; 101 produces yet another obscure Ill mem ref.
;
;110 10-35161 14-May-85 TL
; 101 didn't quite get blank line suppression right. Deletion
; in /U mode isn't pretty.
;
;111 KBY 3-Jun-85 TL
; New HELPER needs more stack. Increase it.
;
;112 None. 9-Aug-85 BAH
; Do copyrights.
;
;113 None. 12-Sep-85 BAH
; FILCOM compares too many job data area locations. Do not compare
; locations 0-40, 42, 43, 45-73, 77-111, 113, 114, and 132 inclusive.
; Also FILCOM had a bug where it was erroneously comparing location 73.
;
;114 Deleted by edit 120.
; 868772 03-Feb-86 DRB
; /1L doesn't work. Apparent fencepost error.
;
;115 KBY/RDH 7-Apr-86 TL
; /O very rarely gets the base tag wrong. For example, if file 2 has
; two insertions that are far enough apart to be distinct, but closer
; than the length of the first insertion, the wrong tag would be used.
; Edit 110 broke some cases of a difference in progress at EOF,
; causing loops.
;
;116 10-33206 16-Sep-86 BAH
; Edit 101 did not take line sequenced blank lines when setting
; the 400K bit in the line header word.
;
;117 10-JMF-350987 25-Sep-87 TL
; Add /I - Do case-blind comparisons.
;
;120 10-36057 11-Jan-88 BAH
; Edit 114 broke /1L. Remove the edit. Since all traces of what edit
; 114 was trying to fix are gone, wait for another SPR to reproduce
; that problem.
;
;121 10-36057,10-36057AI 15-Jun-88 JJF
; Change sense of test used to see if we are in /L mode or not.
; Edit 120 went too far in the clean-up.
;
;122 10-36057,10-36057AI,10-36057A 8-Sep-88 JJF
; Another battle with /1L. Check specially in the multi-line match
; code to see if /1L was wanted. If so, don't bother checking
; how many extra multi-line matches were found, just undo the line
; pointers and print out the differences.
;
; END OF REVISION HISTORY.
;
SUBTTL FILE COMPARE
;PUT ONCE-ONLY INITIALIZATION HERE.
FILCOM: JFCL ;[100] IN CASE OF CCL RUN
SETZM XITFLG ;[45] ^Z HAS NOT BEEN TYPED
JRST COMPGO ;[45] SO GO PROCESS A COMMAND.
COMP: CLOSE CTL,
RELEAS CTL,
RELEAS IN1,
RELEAS IN2,
COMPGO: SKIPE XITFLG ;[45] EXIT BECAUSE OF ^Z?
EXIT 1, ;[45] YES, A CONTINUE WILL RESTART
RESET
MOVE PP,[IOWD LPDL,PPSET] ;SET UP PUSH DOWN LIST
MOVEI 0,ENDP+500 ;GUARANTEE ROOM FOR BUFFERS (2 DSK +TTY IN AND OUT)
CAMG 0,.JBREL ;BUT NEVER REDUCE SIZE
JRST .+3 ;INCASE LOADED WITH DDT
CORE 0,
JRST ERRCOR ;NOT AVAILABLE
SETZB LOWER,PPSET ;THIS IS THE ZERO WHICH WILL
;BE "BLT"ED TO CLEAR CORE
MOVE [XWD PPSET,PPSET+1] ;ZERO STORAGE AREA
BLT ENDP-1 ;UPPER LIMIT TO BE ZEROED
MOVE PPSET ;[31] ZERO OUT
MOVEM @.JBFF ;[31] FIRST BUFFER POS.
HRRZ .JBFF ;[31] BEGINING OF AREA TO CLEAR
ADDI 1 ;[31] SET THE 'FROM' PART FOR THE 'BLT'
CAML .JBREL ;[31] IS THIS NECESARY?
JRST CMPGO1 ;[31] NO, CONTINUE INITIALICING REST
HRL .JBFF ;[31] SET LH FOR 'BLT'
BLT @.JBREL ;[31] AND DO IT.
CMPGO1: HRLOI UPPER,377777 ;LARGE NUMBER BY DEFAULT
MOVEI 0,MATCH
MOVEM 0,NUMLIN ;MATCH IS NORMALLY 3 LINES
AOS PAGNUM+0 ;ZEROED BY BLT ABOVE-1ST PAGE IS 1
AOS PAGNUM+1 ;DITTO FOR SECOND FILE
MOVSI FR,PAGSW+NOFORM ;INIT FR FOR NEW PAGE HEADING
PUSHJ PP,INITTY ;INITIALIZE TTY
PUSHJ PP,CRLF ;OUTPUT CARRIAGE RETURN - LINE FEED
MOVEI C,"*" ;TELL USER WE ARE READY FOR COMMAND
PUSHJ PP,TYO ;OUTPUT THE *
PUSHJ PP,DMPOUT ;OUT GOES THE *
SETZM FILCNT ;CLEAR FILE COUNTER FOR NAME ROUTINE
PUSHJ PP,NAME1 ;ANALYIZE OUTPUT DEVICE AND NAME
CAIN C,"_" ;ERROR IF NO ARROW
JRST CTLSE1 ;ITS THERE--PROCEED
TLNN FR,CTYPF ;ANY COMMAND TYPED?
JRST COMPGO ;NO
CTLSER: PUSHJ PP,EAT ;[45] CLEAR OUT THE BAD LINE
JSP T,ERROUT
ASCIZ /?Command error/
CTLSE1: SETZM OUTEXT ;ASSUME NO OUTPUT EXTENSION GIVEN
CAIN ACDEL,"." ;DOT THERE?
SETOM OUTEXT ;YES,SO THERE IS AN EXTENSION
JUMPN ACDEV,CTLSE2 ;NO DEFAULT IF DEVICE NOT 0
SKIPN ACFILE
MOVSI ACDEV,'TTY' ;IF FILENAME 0, ASSUME TTY
SKIPE ACFILE
MOVSI ACDEV,'DSK' ;IF FILENAME NOT 0, ASSUME DSK
CTLSE2: MOVEM ACDEV,OUTDEV ;SAVE OUTPUT DEVICE IN DIRECTORY BLOCK
MOVEM ACFILE,OUTDIR ;PUT SIXBIT FILE NAME IN
HLLZM ACEXT,OUTDIR+1 ;AND SAVE EXTENSION
MOVEM ACPPN,OUTDIR+3 ; AND PROJ, PROG NUMBER
;PROCESS INPUT PART OF COMMAND STRING
AOS FILCNT ;INCREMENT FILE COUNT
PUSHJ PP,NAME1 ;GET INPUT COMMAND STRING
TLNN FR,CTYPF ;ANY FILE DESCRIPTOR TYPED?
JRST CTLSER ;NO, ERROR
SETZ T, ;GET A ZERO
EXCH T,EXTFL2 ;INCASE NO 2ND FILE
MOVEM T,EXTFL1 ;FLAGS IN RIGHT PLACE
CAIN C,"," ;COMMA TO TERMINATE 1ST INPUT FILE?
JRST CTLSE3 ;YES, NORMAL CASE
TLNE FR,ASCSW ;ASCII SWITCH?
JRST CTLSER ;YES, ERROR
TLNN FR,BINSW ;BINARY SWITCH?
TLNE T,BINSW ;OR EXT?
TLOA FR,EOF2SW ;YES, SET EOF FOR 2'ND INPUT FILE
JRST CTLSER ;ASCII, ERROR
CAIG C,.CHESC ;[20] [100] BUT ONLY ALLOW VALID EOF
CAIGE C,.CHLFD ;[20] [100] IF GREATER THAN ESC OR LESS THAN FF
JRST CTLSER ;[20] [100] GIVE ERROR
CAILE C,.CHCRT ;[20] [100] ONLY ALLOW LF, VT, FF, CR
CAIL C,.CHCNZ ;[20] [100] ^Z AND ESC
CAIA ;[20] TO END LINE
JRST CTLSER ;[20] OTHERWISE GIVE ERROR
CTLSE3: SKIPN ACDEV ;ASSUME DSK IF NO SPECIFIED DEVICE
MOVSI ACDEV,'DSK'
MOVEM ACDEV,INDEV1
MOVEM ACFILE,INDIR1 ;FIRST INPUT FILE
MOVEM ACEXT,INDIR1+1 ;AND SAVE EXTENSION
MOVEM ACPPN,INDIR1+3 ; AND PROJ,PROG NUMBER
MOVEM ACPPN,INDPPN ;SAVE P,P AGAIN
MOVEI 0,.IOASL ;[100] SET UP INPUT DATA MODE
TXO 0,UU.LBF ;[74] USE BIG BUFFERS
;1 (WHICH IS ACDEV) ALREADY IS SET UP
MOVEI 2,INBUF1 ;SET UP INPUT BUFFER HEADER
OPEN IN1,0 ;INIT DEVICE
JRST ERRI ;DEVICE CAN'T BE INITIALIZED
INBUF IN1,2 ;DO LOOKUP ON FIRST FILE NAME
LOOKUP IN1,INDIR1
JRST ERRIA1 ;[24]ERROR RETURN
MOVEI T,HBUF1
PUSHJ PP,HEADER ;CREATE HEADER LINE- FILE #1
MOVE T,EXTFL1 ;RESET T INCASE NO 2ND FILE
TLNE FR,EOF2SW ;PREMATURE EOF SET
JRST NOINP2 ;YES, NO SECOND FILE
PUSHJ PP,NAME1
TLNN FR,CTYPF ;ANY FILE DESCRIPTOR TYPED?
JRST CTLSER ;NO, ERROR
SKIPN ACDEV
MOVSI ACDEV,'DSK' ;"DSK" IS DEFAULT
MOVEM ACDEV,INDEV1
SKIPE ACFILE
MOVEM ACFILE,INDIR1 ;INSERT FILE NAME AND EXTENSION
CAIN ACDEL,"." ;PERIOD MEANS EXPLICIT EXTENSION
MOVEM ACEXT,INDIR1+1
MOVEM ACPPN,INDIR1+3 ;SAVE PROGER IN DIRECT BLOCK
MOVEM ACPPN,INDPPN ;SAVE P,P AGAIN
MOVEI 0,.IOASL ;[100] INIT DEVICE IN ASCII LINE MODE
TXO 0,UU.LBF ;[74] USE BIG BUFFERS
MOVEI 2,INBUF2 ;BUFFER HEADER FOR 2ND INPUT FILE
OPEN IN2,0 ;INIT 2ND DEVICE
JRST ERRI ;INIT FAILED
INBUF IN2,2 ;LOOKUP ON SECOND FILE NAME
LOOKUP IN2,INDIR1
JRST ERRIA2 ;[24]
MOVEI T,HBUF2
PUSHJ PP,HEADER ;CREATE HEADER LINE- FILE #2
TLNE FR,ASCSW ;ASCII SWITCHES SEEN
JRST INICTL ;YES, LEAVE WELL ALONE
SETZ T, ;[53] RESET DEFAULT MODE
TLNE FR,BINSW ;BINARY SWITCHES SEEN?
JRST SETBIN ;YES, CHANGE MODE TO BINARY
MOVE T,EXTFL1 ;GET DEFAULT EXT MODE
IOR T,EXTFL2 ;FOR BOTH FILES
TLNN T,BINSW ;BINARY WIN OVER ASCII
JRST INICTL ;ASCII
SETBIN: SETSTS IN2,.IOBIN ;[100] CHANGE TO BINARY MODE
NOINP2: MOVEI 0,(POINT 36,,35)
IOR FR,T ;SET MODE BINARY
SETSTS IN1,.IOBIN ;[100]
HRLM 0,INBUF1+1 ;CHANGE FROM ASCII
HRLM 0,INBUF2+1
INICTL: MOVEI 0,.IOASC ;[100] INIT OUTPUT DEVICE
TXO 0,UU.LBF ;[74] USE BIG BUFFERS
MOVE 1,OUTDEV
MOVSI 2,CTOBUF
OPEN CTL,0
JRST ERRA ;INIT FOR OUTPUT FAILED
MOVE TT,OUTDEV ;CAN OUTPUT DEVICE DO OUTPUT
DEVCHR TT,
TXNN TT,DV.OUT ;[100]
JRST ERRONO ;[24]NO
TXNE TT,DV.TTY ;[100] IS OUTPUT DEVICE TTY?
TLO FR,IOTTY ;YES, DO 1 OUTPUT PER LINE
SKIPN ACFILE,INDIR1 ;IF LAST INPUT FILE NAME WAS NULL,
MOVE ACFILE,[SIXBIT /FILCOM/] ; MAKE OUTPUT "FILCOM", BUT
SKIPN OUTDIR ; ONLY IF NO OUTPUT FILENAME SPECIFIED
MOVEM ACFILE,OUTDIR
MOVSI ACEXT,'SCM' ;ASSUME ASCII
TLNE FR,BINSW ;BINARY?
MOVSI ACEXT,'BCM' ;BCM IF BINARY
SKIPL OUTEXT ;OUTPUT EXTENSION GIVEN?
SKIPE OUTDIR+1 ;OR ONE IMPLIED?
SKIPA ;RIGHT, NO NEED FOR CHANGE
MOVEM ACEXT,OUTDIR+1 ;USE DEFAULT
ENTER CTL,OUTDIR ;AND TRY TO ENTER OUTPUT FILE NAME
JRST ERROEF ;[24]
OUTPUT CTL,
;FIND OUT HOW MUCH CORE IS AVAILABLE AND SET POINTERS AND LIMITS
HRRZ W1,.JBFF
ADDI W1,20 ;GUARANTEE AN INITIAL 20 WORDS
CORE W1, ; FOR TEXT BUFFERS
JRST NORERR ;DIDN'T GET IT, ERROR
AOS W1,.JBFF
HRRZM W1,LBUFP1 ;SET 1ST ADDRESS FILE 0
SETZM 1(W1) ;FORCE NULLS INTO BUFFER
HRRZM W1,LBUFP2 ;DITTO FILE 2
MOVE W1,.JBREL
SUB W1,.JBFF ;COMPUTE SPACE AVAILABLE
HRRZS W1
LSH W1,-1 ;AVAILABLE SPACE/2
ADDB W1,LBUFP2 ;INPUT POINTER FILE 2 STARTS HALF WAY THROUGH BUFFER
SETZM 1(W1) ;FORCE NULLS INTO BUFFER
HRLOI 0,377777
MOVEM 0,OLDNUM+0 ;ANY LINE # IS SMALLER THAN
MOVEM 0,OLDNUM+1 ; THIS ONE
SETOB F1,TOP1 ;INITIALIZE TOP OF EACH FILE
SETOB F2,TOP2 ;THE TOP IS THE HIGHEST LINE THAT WE HAVE EXAMINED
TLNE FR,BINSW ;BINARY COMPARE?
JRST BINCOM ;USE WORD BY WORD IF BINARY
SOS NUMLIN ;INIT SRCCOM MATCH COND TO "MATCH-1"
SETOM LSTSYM+SYMLIN ;[104] MAKE SURE BEGINNING OF FILE IS LINE 0
TLNN FR,USWBIT ;SEE IF UPDATE MODE
JRST MAINST ;NO
SKIPN LSEEN ;[21] SEE IF HAD /L
SETOM USWFLG ;[21],[34] NO, SET A FLAG
JRST MAINST ;START SRCCOM WITH 1ST LINES
;THE FOLLOWING CODE IS THE GUTS OF THE PROGRAM.
;WHEN THE LOOP AROUND MAIN DETECTS THAT TWO LINES ARE NOT A MATCH
;CONTROL GOES OFF TO DETERMINE THE EXTENT OF THESE DIFFERENCES.
;THE TOTAL DIFFERENCES ARE DETERMINED AS FOLLOWS. FIRST GET TWO
;MORE LINES. DOES THE ORGINAL LINE IN FILE 1 WHICH DID NOT MATCH
;MATCH THE NEW LINE FROM FILE TWO. IF SO THEN THE ORGINAL LINE
;IN FILE 2 WAS AN INSERTION. (OR A DELETION). IF NO MATCH THIS
;WAY TRY IT THE OTHER WAY. IF STILL NO MATCH GET TWO MORE LINES
;TAKE THE NEW LINE FROM FILE 1 AND TRY TO MATCH IT AGAINST ALL THE
;LINES WE HAVE BEEN EXAMINING IN FILE TWO; THEN DO IT THE OTHER
;WAY AROUND. EOF'S ARE DETECTED BY "GETTWO" WITH NO RETURN SKIP
MAIN: TRZ FR,-1 ;THIS FOR FILE ONE
PUSHJ PP,MOVEUP ;MOVE UP THE BOTTOM, BECAUSE WE ARE FINISHED
;WITH TWO LINES
HRRI FR,1 ;NOW FOR FILE TWO
PUSHJ PP,MOVEUP ;UP GOES THE BOTTOM POINTER
MAINST: SETOB F1,F2 ;INITIALIZE LINE POINTERS
PUSHJ PP,GETTWO ;GET TWO LINES
JRST MAIN15 ;ONE FILE SHORT
PUSHJ PP,COMPL ;COMPARE THESE TWO LINES
JRST MAIN ;THEY MATCH--LOOK AT NEXT TWO
;WHEN WE GET HERE WE HAVE DETECTED A DIFFERENCE
;NOW THE PROGRAM WILL LOOK AHEAD TO TRY AND FIND THE NEXT TWO
;MATCHING LINES.
AOS DIFFLG ;SET "DIFFERENCE IN PROGRESS" FLAG
AOS ERRCNT ;SET FLAG SHOWING DIFFERENCES FOUND
MAIN10: PUSHJ PP,GETTWO ;GET THE NEXT TWO LINES
JRST MAIN15 ;ONE FILE SHORT
SETZ F1, ;RESET POINTER FOR FIRST FILE TO
;THE LINE IN WHICH THE DIFFERENCE WAS FOUND
MOVE W1,NUMLIN ;[34] Make a temp copy
MOVEM W1,TNMLIN ;[34] in case we are updating
MAIN12: PUSHJ PP,COMPL ;NOW SEE IF WE CAN MATCH THAT LINE
JSP W1,MULTI ;FOUND 1 LINE MATCH- LOOK FOR MULTIPLE
MOVE T,F2 ;[107] TOP ON OTHER FILE
CAMLE T,TOP1 ;[107] IS IT LONGER THAN TOP ON THIS FILE?
MOVE T,TOP1 ;[107] YES, USE TOP OF THIS FILE
CAME F1,T ;[107] HAVE WE LOOKED FROM THE MISMATCHED LINE
;[107] TO THE CURRENT LINE?
AOJA F1,MAIN12 ;[107] NO--UP LINE POINTER AND TRY AGAIN
SETZ F2, ;[107] HAVEN'T FOUND A MATCH THIS TIME
;[107] NOW TRY IT THE OTHER WAY
MAIN14: MOVE T,F1 ;[107] TOP ON OTHER FILE
CAMLE T,TOP2 ;[107] IS IT LONGER THAN TOP ON THIS FILE
MOVE T,TOP2 ;[107] YES, USE TOP OF THIS FILE
CAML F2,T ;[107] LOOKED FAR ENOUGH? (THIS VERSION HAS
;THE INEFFICIENCY MENTIONED IN THE LIBRARY
;WRITE UP REMOVED- TWE)
JRST CHECK ;[34] Probably, check for /U
PUSHJ PP,COMPL
JSP W1,MULTI ;LOOK FOR MULTI LINE MATCH
AOJA F2,MAIN14 ;INDEX AND LOOK SOME MORE
CHECK: SKIPN USWFLG ;[34] Making special /U checks?
JRST MAIN10 ;[34] No, looked far enough
SOSGE TNMLIN ;[34] Lines to check this time
JRST MAIN10 ;[34] None, quit
JRST MAIN12 ;[34] Try MULTI again
;THE MAIN15 CODE HANDLES THE CASE OF EITHER (OR BOTH) FILES
;HAVING NO LINES TO COMPARE. IF BOTH FILES HAVE NO LINES, "FINISH"
;PRINTS OUT ALL LINES IN BOTH FILES (IF ANY) AS DIFFERENCES.
;IF EITHER FILE HAS A NEW LINE, THE SHORTER FILE IS
;SEARCHED FOR A MATCH FOR THAT LINE. THIS CONTINUES (READING A NEW LINE
;FROM THE LONGER FILE) UNTIL NEITHER FILE HAS ANY LINES OR UNTIL A
;MATCH IS FOUND.
MAIN15: SKIPGE W1,GETFIL ;DOES EITHER FILE HAVE A LINE?
JRST FINISH ;NO
AOS DIFFLG ;SET "DIFFERENCE IN PROGRESS" FLAG
AOS ERRCNT ;SET "DIFFERENCES FOUND" FLAG
HRRZM W1,FIL ;SAVE FILE # THAT HAS LINES
HRR FR,W1 ;SETUP FR FOR MAIN18
JUMPL F1,MAIN18 ;TRA IF FILE 1 HAS NO LINES
JUMPL F2,MAIN18 ;DITTO FILE 2
TRC FIL,1 ;CHANGE 1 TO 0 (OR VICE VERSA)
SETOM F1(FIL) ;LOOK THRU SHORT FILE FOR MATCH
MAIN17: MOVE W1,F1(FIL)
CAML W1,TOP1(FIL) ;SEARCHED THRU SHORT FILE?
JRST MAIN10 ;YES, AND NO MATCH
AOS F1(FIL) ;INDEX LINE
PUSHJ PP,COMPL ;LOOK FOR A MATCHING LINE
JSP W1,MULTI ;FOUND A MATCH, NOW LOOK FOR MULTIPLE MATCH
JRST MAIN17 ;NO MULTI LINE MATCH
MAIN18: TLNN FR,USWBIT ;FOR UPDATING, NO LISTING HERE
PUSHJ PP,PRNTXT ;ALL LINES ARE GONE FROM 1 FILE,
;OUTPUT THE OTHER WITHOUT USING CORE
JRST MAIN
;AT THIS POINT NEITHER FILE HAS ANY MORE LINES TO BE READ.
;PRINT AS DIFFERENCES ANY LINES REMAINING FOR EITHER FILE.
FINISH: MOVEM F1,TEMPF1 ;[115] FAKE OUT MULT8
MOVEM F2,TEMPF2 ;[115] ...JUST IN CASE WE END UP THERE
JUMPGE F1,MULT8 ;PRINT DIFFERENCES IF EITHER BUFFER
JUMPGE F2,MULT8 ; HAS ANY LINES IN IT
;NO LINES ANYWHERE
SKIPE OFSSWT ;[103] /O?
SKIPN W1,NOHDR ;[103] DID ONE FILE END SHORT?
JRST FIN1 ;[103] NO
TRNN W1,-1 ;[103] YES, FILE 1?
PUSHJ PP,PRNSEP ;[103] YES - SEP GOES AFTER EOF
FIN1: MOVEI W1,[ASCIZ /|
/]
TLNE FR,USWBIT ;"UPDATE" MODE?
SKIPN DIFFLG ;YES
JRST FIN2 ;NO
PUSHJ PP,PPRINT ;PRINT MESS. IF 2ND FILE IS TRUNCATED 1ST FILE
FIN2: MOVEI T,[ASCIZ /No differences encountered/]
SKIPN ERRCNT ;ANY DIFFERENCES?
JRST [ TLNN FR,USWBIT;[52] IF WE ARE UPDATING
SKIPE OPTSWT ;[105] OR USER WANTS FILE ANYHOW
JRST FIN3 ;[105] WE WANT TO KEEP THIS
CLOSE CTL,1B30;[52] DON'T PRODUCE AN OUTPUT FILE
JRST FIN3 ] ;CONTINUE WITH MESSAGES
MOVEI T,[ASCIZ /%files are different/]
SKIPE QSW ;/Q MODE?
MOVEI T,[ASCIZ /?files are different/]
FIN3: PUSHJ PP,TYPMSG ;PRINT MESSAGE
PUSHJ PP,CRLF
JRST COMP ;END OF SOURCE COMPARE
;THIS SECTION LOOKS FOR MULTI LINE MATCH
MULTI: SKIPGE NUMLIN ;[114][120][121] MULTIPLE LINE TEST?
JRST MULT7 ;NO
HRRZM W1,RTNTMP ;YES, SAVE RETURN ADDRESS
SETZM NUMTMP ;INIT MULTI-LINE COUNTER
MOVEM F1,TEMPF1 ;SAVE CURRENT POINTERS
MOVEM F2,TEMPF2
MULT2: PUSHJ PP,GETTWO ;GET NEXT TWO LINES
JRST MULT4 ;ONE FILE DOESN'T HAVE A LINE
MULT20: SKIPN USWFLG ;[101] FUNNY /U?
JRST MULT44 ;[101] NO
PUSHJ PP,SETP ;[101] POINT TO LINES
MOVEI W3,400K ;[101] BLANK LINE IN MEMORY BIT
TDNE W3,0(W2) ;[101] IS THIS ONE?
JRST MULT41 ;[101] YES, SKIP IT
TDNN W3,0(W1) ;[101] CHECK THE OTHER FILE
JRST MULT44 ;[101] NOPE
TRZA FR,-1 ;[101] GET ANOTHER LINE
MULT41: HRRI FR,1 ;[101] FROM SOME FILE
SETOM GETCNT ;[101]
SETOM GETFIL ;[101]
PUSHJ PP,GLINE ;[101] READ
SKIPGE GETCNT ;[101] GOT ONE?
JRST MULT4 ;[101] NO, EOF
JRST MULT20 ;[101] YUP, SEE IF ONE OF THEM IS BLANK
MULT44: PUSHJ PP,COMPL ;COMPARE THEM
JRST MULT6 ;MATCH, TEST MULTI COUNTER
MULT4: MOVE F1,TEMPF1 ;NO MATCH, RESET REGS
MOVE F2,TEMPF2
SKIPG T,USERL ;[122] USER-TYPED /L?
JRST MULT45 ;[122] NO
CAIG T,1 ;[122] YES - IS IT /1L?
JRST MULT8 ;[122] YES - PRINT DIFFERENCES
MULT45: JRST @RTNTMP ;[122] RETURN TO WHERE WE GOT TO MULTI FROM
MULT6: AOS W1,NUMTMP ;INDEX MULTI-LINE COUNTER
SKIPN USWFLG ;[34] Update mode check?
JRST MULT64 ;[34] No, regular one
CAMGE W1,TNMLIN ;[34] Test for end
JRST MULT2 ;[34] Not yet, keep trying
JRST MULT66 ;[34] Done
MULT64: CAMGE W1,NUMLIN ;[34] TEST FOR END
JRST MULT2 ;TEST NEXT TWO
MULT66: EXCH F1,TEMPF1 ;[34] [110] RESET TO 1ST COMPARISION
EXCH F2,TEMPF2 ;[110]
MULT7: TLNE FR,USWBIT ;MANUAL UPDATE MODE?
JRST MULT9 ;YES
MULT8: TLNE FR,USWBIT ;CHECK UPDATE MODE
JRST MAIN ;FOR UPDATE MODE, GET 2ND FILE PRINTED
PUSHJ PP,PNTBTH ;PRINT DIFFERENCES
;GO BACK AND START COMPARING.
;WHEN WE START COMPARING AGAIN THE LINE POINTER WILL
;BE POINTING TO THE FIRST TWO LINES AFTER THE MATCHING LINES
MOVE F1,TEMPF1 ;[110] CAUSE MOVEUP TO FLUSH ALL THE
MOVE F2,TEMPF2 ;[110] LINES THAT WERE JUST MATCHED
JRST MAIN ;DIFFERENCES PRINTED- LOOK FOR MORE
MULT9: SUBI F1,1 ;LEAVE POINTERS POINTING TO
SOJA F2,MAIN ; LAST DIFFERENCE
;THIS ROUTINE SETS UP THE POINTERS TO THE TEXT
;MEMORY STORAGE AREA LOOKS LIKE THIS:
;1) BUFFER SPACE FOR FILE # 0 (POINTED TO BY LBUFP1)
; A) XWD (PAGE #),(WORD COUNT FOR LINE (INCLUDING THIS WORD))
; BIT 18 OF WORD COUNT MEANS BLANK LINE IN CORE
; (/O) SYMBOL DEFINITION BLOCK FOR THIS LINE (5 WORDS)
; TEXT FOR LINE 0
; MORE TEXT FOR LINE 0
; & MORE, ENDED WITH A NULL
; B) MORE LINES (EACH WITH PAGE #,WORD COUNT, AND TEXT
;2) BUFFER SPACE FOR FILE 1 (POINTED TO BY LBUFP2)
; A) AS ABOVE
SETP: HRRI FR,1 ;SET UP POINTER FILE 1
PUSHJ PP,SETONE
HRRI FR,0 ;DITTO FILE 0
SETONE: MOVE W3,F1(FR) ;GET LINE #
SETON1: MOVE TT,OLDNUM(FR) ;GET LAST # COMPUTED FOR
MOVEM W3,OLDNUM(FR) ;SAVE NEW # AS OLD
CAML W3,TT ;IS NEW LARGER THAN OLD?
SKIPA T,OLDPNT(FR) ;YES, START FROM OLD BYTE POINTER
SKIPA T,LBUFP1(FR) ;NO, START FROM BEGINNING
SUB W3,TT ;LOOP ONLY FROM OLD POINTER
MOVSI TT,(ADD T,(T)) ;(SET UP IN AC)
MOVE TT+1,[TRZ T,400K] ;[101] [106]
MOVE TT+3,[JRST SETON2] ;[101] SET UP AC
MOVE TT+2,.+1 ;[101] SET UP AC
SOJGE W3,TT
;TT/ ADD T,(T) ;ADD IN WORD COUNT FOR LINE
;TT+1/ TRZ T,400K ;[101] CLEAR BLANK LINE BIT
;TT+2/ SOJGE W3,TT ;MORE LINES LEFT?
;TT+3/ JRST SETON2 ;NO
SETON2: HRRZM T,OLDPNT(FR) ;SAVE POINTER TO THIS LINE
HRLI T,(POINT 7,0,35) ;NO, CHANGE TO BYTE POINTER
MOVEM T,W1(FR)
POPJ PP,
;[115] FIX A BYTE POINTER TO ACCOUNT FOR /O BLOCK
FIXBP: TRNN FR,-1 ;DON'T IF NOT FILE 0
FIXBPD: SKIPN OFSSWT ;ONLY IF /O
POPJ PP, ;WORDS AREN'T THERE TO SKIP
HRRI W1,SSBLTE(W1) ;BUMP BYTE POINTER PAST SYMBOL BLOCK
POPJ PP, ;DONE
;MOVE UP THE POINTERS WHICH POINT TO THE LINES FROM WHICH WE
;ARE EXAMINING. THIS IS DONE EVERYTIME A MATCH IS FOUND
MOVEUP: TLNE FR,USWBIT ;MANUAL "UPDATE" MODE?
PUSHJ PP,UPDATE ;YES
MOVE W3,F1(FR) ;GET LINE # FOR THIS FILE
CAML W3,TOP(FR) ;GETTING RID OF ALL LINES?
JRST MOVEX ;YES, DON'T MOVE MEMORY
AOS W3,F1(FR) ;GET LINE # OF LINE TO SAVE
PUSHJ PP,SETON1 ;GET ADR OF 1ST LINE TO SAVE
HRL T,LBUFP1(FR) ;SET UP BLT AC (REVERSED)
PUSH PP,T ;SAVE
AOS W3,TOP(FR) ;GET 1ST NON-EXISTANT LINE #
PUSHJ PP,SETON1 ;GET CORRESPONDING 1ST ADR
POP PP,W1
SUB T,W1 ;CALCULATE WORD COUNT OF TRANSFER
ADD T,LBUFP1(FR) ;CALCULATE "E" OF BLT AC,E
MOVSS W1 ;SWITCH AC TO XWD FROM,TO
BLT W1,(T) ;AND AWAY WE GO
MOVEX: SETCM W2,F1(FR) ;W2_-<(F1)+1>
ADDM W2,TOP(FR) ;CHANGE TOP TO ACCOUNT FOR DEAR DEPARTED LINES
HRLOI 0,377777
MOVEM 0,OLDNUM(FR) ;FORCE SETON1 TO RECALCULATE
POPJ PP,
;LIST ALL OF SECOND FILE, EACH LINE PRECEDED BY VERTICAL BAR-TAB
; IF IT IS PART OF A MISMATCH (MISMATCH MEANS (F2) .GE. 1)
UPDATE: TRNN FR,-1 ;SECOND FILE?
POPJ PP, ;NO, RETURN
JUMPL F2,[HRLZS DIFFLG ;[110] YES, INSERTION ?
POPJ PP,] ;[110] YES, REMEMBER THAT
SETOM TEMP ;INIT LINE COUNTER
SOS F2 ;[110] BACK UP A LINE
PUSH PP,F2 ;[110] SAVE
UPDAT1: AOS F2,TEMP ;[110] GET NUMBER OF NEXT LINE
PUSHJ PP,SETONE ;[110] NOW FETCH BYTE POINTER
CAMLE F2,(PP) ;[110] DONE?
JRST UPDAT3 ;[110] YES
MOVEI C,0 ;[100] [110] PRINT VERTICAL BAR IF
SKIPN DIFFLG ; "DIFFERENCE FLAG" IS SET, OR IF
JRST UPDAT2 ; MORE THAN ONE LINE HAS BEEN LOOKED AT
MOVEI T,400K ;[110] UNLESS LINES ARE BLANK
TDNE T,(W2) ;[110] ...
JRST UPDAT2 ;[110] (THEY ARE)
SETOM DIFFLG ;[110] NOTE AT LEASE ONE VERTICAL BAR
MOVEI C,"|" ;[110]
UPDAT2: PUSHJ PP,UPDAT5 ;[110] PRINT DIFFERENCE CHAR AND LINE
JRST UPDAT1 ;[110] CONTINUE
UPDAT3: MOVEI C,0 ;[110] DONE, DEFAULT TO NO CHANGE
SKIPN DIFFLG ;[110] IF NONE,
JRST UPDAT4 ;[110] ASSUMPTION WON
MOVEI T,400K ;[110] SOME DIFFERENCE, BLANK LINE?
TDNE T,(W2) ;[110] IS IT?
JRST [SKIPL DIFFLG ;[110] YES, BLANK AND NO PREV "|"?
MOVEI C,"o" ;[110] YES, DELETION
JRST UPDAT4] ;[110] NO, BLANK + PREV "|", NO "|" HERE
MOVE T,DIFFLG ;[110] SEE WHAT KIND OF DIFFERENCE
MOVEI C,"o" ;[110] ASSUME DELETION
CAME T,[-1] ;[110] IF END OF ORDINARY DIFFERENCE, "|"
TLNN T,-1 ;[110] WAS IT A DELETION?
MOVEI C,"|" ;[110] AN ORDINARY CHANGE.
UPDAT4: PUSHJ PP,UPDAT5 ;[110] PRINT THE LINE
SETZM DIFFLG ;[110] NO DIFFERENCES KNOWN NOW
POP PP,F2 ;[110] RESTORE F2
AOJA F2,CPOPJ ;[110] RESUME SCAN
UPDAT5: PUSHJ PP,PCHART ;[110] PRINT DIFFERENCE FLAG IF ANY
MOVEI C,.CHTAB ;[100] PRINT A TAB
PUSHJ PP,PCHAR
MOVE W1,W2 ;GET BYTE POINTER INTO W1
PUSHJ PP,PRINT ;GO PRINT LINE
MOVEI C,.CHCRT ;[100]
PUSHJ PP,PCHAR ;PRINT CARRIAGE RETURN
ILDB C,W1 ;GET LINE TERMINATING CHARACTER
JRST PCHAR ;[110] PRINT IT AND RETURN
;CODE FOR GETTING TWO LINES
;CALLING SEQUENCE IS:
; PUSHJ PP,GETTWO
; RETURN 1 IF EITHER FILE HAS NO MORE LINES
; RETURN 2 IF ONE LINE READ FROM EACH FILE
; C(GETFIL)=THE # OF FILE FOR WHICH A LINE WAS READ (OR -1 IF NONE)
GETTWO: SETOM GETCNT ;INIT # LINESOBTAINED
SETOM GETFIL ;INIT FILE # LINE CAME FROM
TRZ FR,-1 ;ZERO RIGHT HALF OF "FR"--SET FOR FIRST FILE
PUSHJ PP,GLINE ;GET A LINE FROM FIRST FILE
HRRI FR,1 ;NOW DO FOR SECOND FILE
PUSHJ PP,GLINE
SKIPLE GETCNT ;GETCNT .G. 0 IF TWO LINES WERE GOT
AOS (PP) ;SKIP IF 2 LINES WERE AVAILABLE
POPJ PP,
GLINE: AOS W1,F1(FR) ;BUMP THE LINE POINTERS
CAMLE W1,TOP(FR) ;[76] HAVE WE GONE OVER THE TOP?
JRST GLINEB ;[76] NO LINE -- GO GET ONE
JRST GLNXIT ;[104] GOT IT IN CORE, GO AWAY
GLINEA: TLZ C,400000 ;[76] COUNT BLANK LINES
TRNN FR,-1 ;[103] ONLY COUNT FOR FILE 1
CAIN C,.CHFFD ;[76] [103] BUT NOT FORM-FEEDS
CAIA ;[103] FILE 2 OR FFD
AOS LSTSYM+SYMLIN ;[76] [104] COUNT LINES PAST SYMBOL
SKIPA ;[76]
GLINEB: SOS F1(FR) ;NOT CLEAR YET THAT A NEW LINE EXISTS
HRLS PAGNUM(FR) ;SAVE PAGE # AT BEGINNING OF LINE
PUSHJ PP,GCHAR ;GET A CHARACTER
TLNE FR,@EOFTBL(FR) ;END OF FILE?
POPJ PP, ;YES, NO LINE
TLNN FR,ALLSW ;SKIP IF COMPARING BLANK LINES
JUMPL C,GLINEA ;[76] MINUS CHARS INDICATE BLANK LINES
AOS W1,F1(FR) ;THERE ARE CHARS FOR A NEW LINE
MOVEM W1,TOP(FR) ;THIS LINE IS THE TOP LINE
PUSHJ PP,SETONE ;CALCULATE BYTE POINTER
MOVE W1,W1(FR) ;GET BYTE POINTER IN W1
MOVEM W1,WCADR ;SAVE ADR OF LINE WORD COUNT
HLLZ W2,PAGNUM(FR) ;[101] PICKUP PAGE # AT BEGINNING OF LINE
SKIPGE C ;[101] BLANK LINE?
TRO W2,400K ;[101] YES, REMEMBER THE FACT
MOVEM W2,(W1) ;[101] SAVE WITH THIS LINE
PUSHJ PP,FIXBP ;[115] ADJUST TO TEXT AREA IF NESCESSARY
JRST GLINE3
GLINE2: PUSHJ PP,GCHAR ;GET NEXT CHAR FOR LINE
GLINE3: TLNN W1,760000 ;WILL NEXT IDPB GO INTO NEXT WORD?
PUSHJ PP,GLCHEK ;CHECK ADDRESS
IDPB C,W1 ;STORE CHARS IN LINE BUFFER
JUMPG C,GLINE2 ;NEG CHARACTER IS END OF LINE
MOVEI W3,0 ;REPLACE LAST CHAR WITH NULL
DPB W3,W1
TLNN W1,760000 ;WILL TERM CHAR GO INTO NEXT WORD?
PUSHJ PP,GLCHEK ;YES, CHECK ADDRESS
IDPB C,W1 ;STORE TERM CHAR AFTER NULL
MOVE W3,WCADR ;GET BACK ADR OF WORD COUNT
SUBI W1,-1(W3) ;CALCULATE WORD COUNT
IOR W1,(W3) ;[101] PRESERVE BLANK LINE BIT
SKIPN USWFLG ;[116] FUNNY /U MODE?
JRST GLINE4 ;[116] NO. DON'T CHECK FOR LINE-SEQUENCED LINES
MOVE W2,1(W3) ;[116] GET THE FIRST WORD OF THE LINE
TRNN W2,1B35 ;[116] IS IT A LINE-SEQUENCED LINE?
JRST GLINE4 ;[116] NO. NO NEED TO CHECK IF THE LINE IS BLANK
LDB W2,[POINT 7,2(W3),6] ;[116] YES. GET THE FIRST CHARACTER
;[116] AFTER THE LINE SEQUENCE NUMBER
CAIE W2,.CHTAB ;[116] IF IT'S A TAB, CHECK FURTHER
JRST GLINE4 ;[116] OTHERWISE ASSUME NOT A BLANK LINE
LDB W2,[POINT 7,2(W3),13] ;[116] GET THE NEXT CHARACTER
SKIPN W2 ;[116] CHECK FOR A BLANK LINE
TRO W1,400K ;[116] SIGNIFY THAT THIS IS A BLANK LINE
GLINE4: HRRM W1,(W3) ;SAVE WORD COUNT IN BUFFER
;SEE IF TEXT JUST READ IN IS A LINE-NUMBERED BLANK LINE
TLNE FR,ALLSW ;[33] SKIPPING BLANK LINES?
JRST GLEXIT ;[33] NO, DON'T CHECK TEXT
PUSHJ PP,SETONE ;[33] GET POINTER TO TEXT
PUSHJ PP,FIXBP ;[115] ADJUST FOR POSSIBLE SYMBOL BLOCK
MOVE W1,W1(FR) ;[33] PUT IN KNOWN PLACE
MOVEI W3,1 ;[33] SET UP LINE NUMBER BIT
TDNN W3,1(W1) ;[33] IS IT SET?
JRST GLEXIT ;[33] NO, TEXT IS OK
AOS W1 ;[33] YES, SKIP LINE NUMBER
ILDB T,W1 ;[33] GET FIRST CHARACTER
JUMPE T,BLANK ;[33] IT'S NULL, LINE IS BLANK
CAIE T,.CHTAB ;[33] [100] IF A TAB, CHECK FURTHER
JRST GLEXIT ;[33]
ILDB T,W1 ;[33] SO GET NEXT CHARACTER
JUMPN T,GLEXIT ;[33] IF NOT NULL, LINE IS REALLY THERE
BLANK: SOS F1(FR) ;[33] NO LINE; DECREMENT COUNT
MOVEI C,.CHLFD ;[104] THIS WASN'T A PAGE MARK
JRST GLINEA ;[33] [104] GET ANOTHER LINE
GLEXIT: SKIPE OFSSWT ;[115] SKIP IF NOT /O
TRNE FR,-1 ;[115] DON'T COPY SYMBOL UNLESS FILE 0
JRST GLNXIT ;[115] DON'T COPY
PUSHJ PP,GLSYMB ;[104] LINE IS NOW IN - GET A SYMBOL
HRRZ W1,WCADR ;[115] GET START OF LINE
AOJ W1, ;[115] POINT TO SYMBOL BLOCK
HRLI W1,LSTSYM ;[115] PUT CURRENT SYMBOL THERE
HRRZ W2,W1 ;[115] SAVE COPY OF DESTINATION
BLT W1,SSBLTE-1(W2) ;[115] ONWARDS
GLNXIT: PUSHJ PP,SETONE ;[101] FIND LINE POINTERS
MOVE W1,W1(FR) ;[101] ONLY THE ONE FOR CURRENT FILE
MOVE W1,0(W1) ;[101] CHECK BLANK BIT IN HEADER
TRNE W1,400K ;[101] TO SEE IF TO BE IGNORED
SKIPN USWFLG ;[101] BUT ONLY IN FUNNY/U MODE
CAIA ;[101] DON'T IGNORE
JRST GLINE ;[101] DO
AOS GETCNT ;INDEX # LINES FOUND
HRRZM FR,GETFIL ;SAVE # OF THIS FILE
POPJ PP, ;[104] DONE.
GLTBL: LBUFP2 ;POINTS TO TOP ADR FILE 0
.JBREL ;POINTS TO TOP ADR FILE 1
GLCHEK: HRRZ W3,@GLTBL(FR) ;YES,GET HIGHEST ADR FOR THIS BUFFER
CAIG W3,3(W1) ;CHECK ADR. (LEAVE 1 WORD FOR WORD
;COUNT FOR NEXT LINE PLUS 1 WORD
;SLOP TO BE SAFE
PUSHJ PP,NOROOM ;[55] NO ROOM IN THE INN
HLRZM C,1(W1) ;PUT BIT17 INTO BIT35 (FOR SEQUENCE #)
POPJ PP,
;[76] HERE TO SEE IF THE CURRENT LINE HAS A SYMBOL DEFINITION (FOO:)
GLSYMB: SKIPE OFSSWT ;[104] IF NOT /O
TRNE FR,-1 ;[104] OR THIS IS FILE 2
POPJ PP, ;[104] DO NOTHING
PUSHJ PP,SETONE ;[76] SET W1 TO CURRENT LINE'S TEXT
PUSHJ PP,FIXBPD ;[115] ADJUST FOR HEADER
MOVE W2,[POINT 7,PSYMB] ;[76] WHERE WE CAN BUILD IT INTO
SETZM PSYMB ;[76] CLEAR IT OUT
SETZM PSYMB+1 ;[76]
MOVEI W3,^D10 ;[76] ARBITRARY MAX SYMBOL LENGTH OF 10 CHARACTERS
SETZ TT, ;[76] START WITH NO NNN$ LABEL SEEN
GLSY.1: ILDB T,W1 ;[76] FIRST EAT LEADING SPACES AND TABS
CAIE T,.CHTAB ;[76]
CAIN T," " ;[76]
JRST GLSY.1 ;[76]
SKIPA ;[76] THEN SKIP FIRST ILDB WITH NON-SPACE
GLSY.2: ILDB T,W1 ;[76] SCAN THROUGH A SYMBOL
JUMPE T,GLSY.N ;[76] [104] IF NO : BEFORE EOL, NO SYMBOL
CAIL T,"a" ;[76] LOWER CASE?
CAILE T,"z" ;[76]
SKIPA ;[76] NO
SUBI T,"a"-"A" ;[76] YES, CONVERT TO UPPER CASE
JUMPG TT,GLSY.3 ;[76] IF HAVE ALREADY SEEN A LETTER,
;[76] THEN CONTINUE BUILDING SYMBOL
CAIL T,"0" ;[76] A NUMBER?
CAILE T,"9" ;[76]
JRST GLSY.3 ;[76] NO, LOOK FOR LETTER
AOJL TT,[MOVEI TT,1 ;[76] IF HAVE ALREADY SEEN 999$ THEN SYMBOL IS SCREWY
JRST GLSY.3] ;[76] SO JUST ACCUMULATE STANDARD SYMBOL
SETO TT, ;[76] MARK THAT HAVE SEEN DIGIT
JRST GLSY.S ;[76] AND STORE CHARACTER INTO SYMBOL
GLSY.3: CAIE T,"$" ;[76] COULD IT BE A LOCAL PDP11 LABEL
JRST GLSY.4 ;[76] NO, KEEP BUILDING LABEL
AOJN TT,[MOVEI TT,1 ;[76] IS PDP11 LABEL IF HAVE SEEN ONLY DIGITS
JRST GLSY.S] ;[76] HAVEN'T, SO JUST BUILD SCREWY LABEL
HRREI TT,-2 ;[76] MARK THAT HAVE SEEN 999$ LABEL
JRST GLSY.S ;[76] AND GO STORE "$" INTO LABEL
GLSY.4: CAIE T,"." ;[76] IS THIS ONE OF THE SPECIAL SYMBOL
CAIN T,"%" ;[76] CHARACTERS?
JRST GLSY.S ;[76] YES, GO STORE INTO LABEL
CAIL T,"A" ;[76] IS IT A LETTER?
CAILE T,"Z" ;[76]
SKIPA ;[76] NO
JRST GLSY.S ;[76] YES, GO STORE INTO LABEL
CAIN T,":" ;[76] THE END OF A SYMBOL DEFINITION?
JRST GLSY.E ;[76] YES, GO END THIS LABEL
JRST GLSY.N ;[76] [104] MUST NOT BE A LABEL
GLSY.S: IDPB T,W2 ;[76] HAVE ANOTHER SYMBOL CHARACTER, BUILD SYMBOL
SOJG W3,GLSY.2 ;[76] BUT ONLY UP TO 10 CHARACTERS
JRST GLSY.N ;[76] [104] MUST NOT BE A SYMBOL
;HERE, WE HAVE A SYMBOL. FIGURE OUT WHICH SORT, AND STORE IT.
GLSY.E: HRRZ W1,DOLPTR ;[76] [103] FIRST TRY FOR 11 LOCAL LABEL
AOJL TT,GLSY.6 ;[76] IT IS IF SWITCH WAS -2
SETZM 0(W1) ;[76] OTHERWISE IT'S NOT, FORGET ANY FROM
SETZM 1(W1) ;[76] PREVIOUS LOCAL SYMBOL BLOCK
HRRZ W1,SYMPTR ;[76] [103] AND SWITCH TO SYMBOL POINTER
GLSY.6: MOVE T,PSYMB ;[76] COPY SYMBOL TO WHEREEVER WE NEED IT
MOVEM T,0(W1) ;[76]
MOVE T,PSYMB+1 ;[76]
MOVEM T,1(W1) ;[76]
SETOM LSTSYM+SYMLIN ;[76] [103] [104] RESTART LINES SINCE SYMBOL COUNT
;HERE TO ACCOUNT FOR THIS LINE
GLSY.N: PUSHJ PP,SETONE ;[77] POINT TO LINE AGAIN
HLRZ T,SSBLTE+1(W1) ;[76] [115] GET THE FIRST DATA WORD OUT
TRZ T,<BYTE (7)0,0,.CHDEL>_-^D18 ;[76] LESS THE PART OF THE THIRD BYTE
CAIE T,(BYTE (7).CHNUL,.CHFFD) ;[76] [103] UNLESS THIS IS A BLANK LINE W/FFD
AOS LSTSYM+SYMLIN ;[76] [104] COUNT A LINE SEEN LAST SYMBOL
POPJ PP, ;[76]
;IF A "CORE" UUO IS INSTALLED HERE, IT MUST ADJUST THE FOLLOWING
;LIST OF LOCATIONS (ALL BY THE AMOUNT THE SECOND BUFFER AREA
;IS MOVED, IF ANY):
;1) BYTE POINTER ADDRESS IN: W1
;2) BUFFER POINTER IN: LBUFP2
;3) 1ST ADDRESS FOR LINE IN: 0(PP) ON PUSH DOWN LIST
;THEN RETURN TO THE IDPB NEAR GLINE2+6
NOROOM: PUSH PP,W1 ;SAVE BYTE POINTER
TRC FR,1 ;CHANGE 1 TO 0 (OR VICE VERSA)
MOVE W3,TOP(FR) ;GET TOP LINE # FOR "OTHER" FILE
ADDI W3,1 ;FIND 1ST ADR OF THE NEXT LINE ABOVE TOP
PUSHJ PP,SETON1 ;GET ADR
HRRZM T,HIGH ;SAVE 1ST FREE ADR OF NON-FULL FILE
HRRZ T,@GLTBL(FR);GET HIGHEST ADR AVAILABLE TO NON-FULL FILE
SUB T,HIGH ;GET SPACE AVAILABLE
SUBI T,2 ;LEAVE 1 WRD FOR NEXT LINE WORD COUNT
;PLUS 1 WORD SLOP TO BE SAFE
TRC FR,1 ;CHANGE FILE # BACK TO THE WAY IT WAS
MOVEM T,ROOM ;SAVE ROOM AVAILABLE
CAIL T,^D400 ;COMPARE WITH 400. (NO MAGIC SIGNIFICANCE)
JRST NOR2 ;PLENTY ROOM AVAILABLE- DON'T GET MORE CORE
HRRZ T,.JBREL
MOVEM T,W1 ;SAVE THIS .JBREL AS "OLD" .JBREL
ADDI T,1 ;REQUEST CORE SIZE CONTAINING THIS ADDRESS
CORE T, ;CORE UUO
SKIPA T,ROOM ;FAIL
JRST NOR3 ;SUCCESS
JUMPG T,NOR4 ;ANY CORE LEFT AT ALL?
NORERR: JSP T,ERROUT ;NO, PRINT MESSAGE
ASCIZ /?Buffer capacity exceeded and no core available/
NOR3: HRRZ T,.JBREL ;CORE UUO SUCCESFUL- GET "NEW" .JBREL
SUB T,W1 ;FIND OUT HOW MUCH WAS ADDED
ADDB T,ROOM ;UPDATE TOTAL ROOM AVAILABLE
TRNE FR,1 ;WHICH FILE NEEDED ROOM?
JRST NOR98 ;FILE #1, IT JUST GOT IT
;FILE #0, SHUFFLE CORE
NOR2: ASH T,-1 ;DIVIDE AVAILABLE SPACE BETWEEN FILES
NOR4: MOVEM T,ROOM ;FILE #1 GETS MOVED THIS AMOUNT
TRNN FR,1 ;WHICH FILE NEEDED ROOOM?
JRST NOR5 ;FILE #0. MOVE #1 TOWARD 777777
;FILE #1. MOVE #1 TOWARD 0
MOVNS T,ROOM ;FILE IS MOVING IN NEGATIVE DIRECTION
ADDM T,WCADR ;WORD COUNT ADR FOR FILE# 1 IS MOVED DOWN
ADDM T,(PP) ;SAME WITH BYTE POINTER
MOVE W1,(PP) ;GET LAST ADR TO MOVE FROM BYTE POINTER
ADD T,LBUFP2 ;GET "TO" ADR. [(LBUFP2)-D OF M]
HRL T,LBUFP2 ;GET "FROM" ADR
BLT T,(W1) ;BLT T,"E" (T/ XWD "FROM","TO")
JRST NOR90
NOR5: MOVE W1,T ;GET D OF M
HRLI W1,(POP T,(T)) ;SETUP- POP T,<D OF M>(T) INTO W1
MOVE W2,HIGH ;GET HIGH(+1) ADR OF FILE #1
SUB W2,LBUFP2 ;GET LENGTH OF FILE #1
SOS T,HIGH ;GET LAST ADR IN FILE #1
HRLI T,400000(W2) ;PUT WORD COUNT(+400000) IN LEFT HALF
;400000 AVOIDS PDL OVERFLOW PROBLEM IN AC LOOP
MOVE W3,[JRST NOR90]
MOVE W2,.+1
JUMPL T,W1 ;W1/ POP T,<DISTANCE OF MOVE>(T)
;W2/ JUMPL T,W1
;W3/ JRST NOR90
;THE ABOVE INSTRUCTIONS ARE A REVERSE BLT AND ARE IN THE AC'S FOR SPEED
NOR90: MOVE T,ROOM ;GET DISTANCE FILE #1 WAS MOVED
ADDM T,LBUFP2 ;MODIFY STARTING ADR OF FILE #1
HRLOI 0,377777
MOVEM 0,OLDNUM+1 ;FORCE "SETONE" TO RECALCULATE BYTE POINTER
NOR98: POP PP,W1
POPJ PP,
;THIS PAGE CONTAINS ROUTINE FOR COMPARING TWO LINES
;IT HAS TWO RETURNS--CALLING ADR.+1 IF LINES MATCH OR
;CALLING ADR+2 IF NO MATCH
COMPL: PUSHJ PP,SETP ;CALCULATE POINTERS TO TEXT
PUSHJ PP,FIXBPD ;[115] FIX FILE 0 POINTER IF /O
MOVEM W1,P1 ;P1=TEMP POINTER TO TEXT FOR FIRST FILE
MOVEM W2,P2 ;P2 FOR SECOND FILE
MOVEI W3,1
TDNN W3,1(W1) ;TEST SEQUENCE # BIT
JRST COMPL5 ;[33] [100] NOT SEQ. #
AOS P1 ;SKIP OVER SEQ. # AND
ILDB W1,P1 ;[33] GET CHAR
CAIN W1,.CHTAB ;[100] [33] IS IT A TAB?
COMPL5: ILDB W1,P1 ;[33] [100] YES, EAT IT
;[100] HERE WITH FIRST GOOD CHAR FROM FILE 1 IN W1
TDNN W3,1(W2) ;SAME THING FOR FILE #2
JRST COMPL2 ;[33]
AOS P2
ILDB W2,P2 ;[33] GET NEXT CHAR
CAIE W2,.CHTAB ;[33] [100] IS IT A TAB?
JRST COMPL0 ;[33] NO, DON'T EAT
JRST COMPL2 ;[33] YES, DO EAT
COMPL1: ILDB W1,P1 ;GET A CHARACTER FROM LINE FROM FIRST FILE
COMPL2: ILDB W2,P2 ;AND ONE FROM SECOND FILE
COMPL0: CAMN W1,W2 ;THIS IS THE BIG TEST--ARE THEY EQUAL
JRST COMPL7 ;[117] YES, CONTINUE
SKIPN OPISWT ;[117] CASE-INVARIANT COMPARE?
JRST COMPL4 ;NO
CAIL W1,"a" ;[117] YES, UPCASE BOTH CHARS
CAILE W1,"z" ;[117]
CAIA ;[117]
TRZ W1,40 ;[117] CONVERT TO UPPER CASE
CAIL W2,"a" ;[117] YES, UPCASE BOTH CHARS
CAILE W2,"z" ;[117]
CAIA ;[117]
TRZ W2,40 ;[117] CONVERT TO UPPER CASE
CAME W1,W2 ;[117] TRY ONE MORE TIME
JRST COMPL4 ;[117] FAILED AGAIN, FORGET IT
COMPL7: CAIN W1,";" ;YES, COMMENT?
TLNN FR,CSWBIT ;YES, SUPPRESS COMMENTS?
JUMPN W1,COMPL1 ;NO,NO. TEST FOR END OF LINE
POPJ PP, ;LINES MATCH, RETURN
COMPL3: ILDB W1,P1 ;GET NEW CHAR FOR FILE 1
COMPL4: CAIE W1,40 ;SPACE?
CAIN W1,.CHTAB ;[100] OR TAB?
TLNN FR,SSWBIT ;AND IS SPACING BEING IGNORED?
SKIPA ;NO
JRST COMPL3 ;FLUSH SPACE OR TAB FOR FILE 1
CAIE W2,40 ;SPACE?
CAIN W2,.CHTAB ;[100] OR TAB?
TLNN FR,SSWBIT ;AND IS SPACING BEING IGNORED?
SKIPA ;NO
JRST COMPL2 ;YES, FLUSH A SPACE OR TAB FOR FILE 2
CAMN W1,W2 ;ARE THE CHARACTERS NOW THE SAME?
JRST COMPL7 ;YES, TEST FOR END OF LINES
CAIE W1,";" ;COMMENT IN FILE 1?
CAIN W2,";" ;OR IN FILE 2?
TLNN FR,CSWBIT ;AND ARE COMMENTS BEING IGNORED?
JRST CPOPJ1 ;NO, FILES DON'T MATCH, SKIP RETURN
JUMPE W1,CPOPJ ;YES, OTHER CHAR MUST BE NULL OR ELSE ONE
JUMPE W2,CPOPJ ; LINE IS LONGER THAN OTHER AND FILES DIFFER
CPOPJ1: AOS (PP)
CPOPJ: POPJ PP,
;WHEN WE GET TO THIS POINT WE HAVE FOUND
;THE EXTENT OF THE DIFFERENCES AND WE ARE READY TO PRINT
;THESE DIFFERENCES OUT
PNTBTH: TRZ FR,-1 ;OUTPUT FILE 1
PUSHJ PP,PNTTXT ;PRINT FILE 1 DIFFERENCES
MOVEI W1,[ASCIZ /****/]
PUSHJ PP,PPRINT
SKIPE OFSSWT ;[76] IF /OFFSET,
PUSHJ PP,PNTTAG ;[103] ADD THE TAG
PUSHJ PP,PCRLF
HRRI FR,1 ;THEN PRINT FILE 2 DIFFERENCES
PUSHJ PP,PNTTXT
MOVEI W1,[ASCIZ /**************/]
PUSHJ PP,PPRINT
JRST PCRLF ;PRINT CARRIAGE RETURN-LINE FEED
;THIS ROUTINE IMBEDS "SYMBOL+N" IN THE ASTERISK LINES
;THE "SYMBOL" MUST OCCUR WITHIN THE FIRST 10 CHARACTERS OF THE LINE
PNTTAG: MOVEI W1,[ASCIZ / ;At /] ;[76] [103] [115] NOISE
PUSHJ PP,PPRINT ;[76] [115]
PUSH PP,LBUFP1 ;[115] SAVE POINTER JUST IN CASE
SKIPN NOHDR ;[115] SKIP IF FLUSHING AN EOF
JRST PNTT.0 ;[115] NOPE, NORMAL CASE
MOVEI W1,SAVSYM-1 ;[115] YES, REDIRECT OUTPUT TO FAKE SYMBOL
MOVEM W1,LBUFP1 ;[115] BECAUSE LBUFP1 LIES
PNTT.0: MOVE W1,LBUFP1 ;[115] BOTTOM OF WINDOW IS LINE WITH TAG
MOVE W3,$SYMBL+1(W1) ;[76] [103] [115] GET LOCAL SYMBOL NAME
JUMPE W3,PNTT.1 ;[76] [103] SKIP THIS IF NO LOCAL SYMBOL THERE
MOVEI W1,$SYMBL+1(W1) ;[76] [103] [115] POINT BACK AT LABEL
PUSHJ PP,PPRINT ;[76] [103] [115] DO IT
JRST PNTT.2 ;[103] MAIN SYMBOL COMES LATER
PNTT.1: MOVE W1,LBUFP1 ;[115] POINT TO TEXT AGAIN
MOVEI W1,SYMBOL+1(W1) ;[115] GET ADDRESS OF MAJOR LABEL
SKIPN W2,(W1) ;[103] IF NULL
MOVEI W1,[ASCIZ /top of file /] ;[103] [115] SAY SOMETHING
PUSHJ PP,PPRINT ;[76] [103] [115] GET IT OUT
PNTT.2: MOVE W1,LBUFP1 ;[115] POINT TO TEXT BLOCK
SKIPN T,SYMLIN+1(W1) ;[76] [103] [115] GET NUMBER OF LINES SINCE LAST SYMBOL
JRST PNTT.3 ;[76] [103] NONE, SEE IF NEED A MAIN SYMBOL
MOVEI C,"+" ;[76] SOME, PUT IN PLUS
PUSHJ PP,TYO ;[76]
PUSHJ PP,PNTDEC ;[76] TYPE NUMBER OF LINES PAST SYMBOL
MOVEI C,"L" ;[103]
PUSHJ PP,TYO ;[103]
PNTT.3: JUMPE W3,PNTT.4 ;[103] [115] IF ONLY MAIN SYMBOL, NO QUALIFIER
MOVEI W1,[ASCIZ / following /] ;[76] [103] [115] ENCLOSE SYMBOL
PUSHJ PP,PPRINT ;[76] [115]
MOVE W1,LBUFP1 ;[115] GET ADDRESS ONE LAST TIME
MOVEI W1,SYMBOL+1(W1) ;[76] [115] POINT AT MAIN SYMBOL
PUSHJ PP,PPRINT ;[76] [103] [115] GET IT OUT
PNTT.4: POP PP,LBUFP1 ;[115] RESTORE BUFFER POINTER
POPJ PP, ;[115] DONE
;THIS SUBROUTINE PRINTS ALL THE TEXT IN THE
;BUFFER SPECIFIED BY C(FR)R. I. E. FILE 1 OR FILE 2
PNTTXT: SETOM PAGEN ;[76] GUARANTEE PAGE # MISMATCH- THEREFORE PRINT IT
SETOM TEMP ;[76] START POINTER AT -1
PNTTX2: AOS W1,TEMP ;[76] INDEX LINE COUNTER
CAMLE W1,F1(FR) ;PRINTED ALL LINES?
POPJ PP, ;YES, RETURN
PUSH PP,F1 ;NO, SAVE LINE POINTERS
PUSH PP,F2
SETZB F1,F2 ;F1=F2=0
MOVEM W1,F1(FR) ;SET UP EITHER FOR F1 OR F2
PUSHJ PP,SETONE ;CALCULATE BYTE POINTERS TO TEXT
MOVE W1,W1(FR) ;UNNECESSARY FOR FILE 1- MOVES BYTE PNT FILE 2
PUSHJ PP,PLINEN ;PRINT: 1) TEXT
PUSHJ PP,PCRLF
POP PP,F2
POP PP,F1 ;RESTORE REGS
JRST PNTTX2 ;[76] FINISH OUT ALL LINES
;HERE WHEN ONE FILE IS SHORT, ONLY WANT *'S ONCE
PRNTXT: SKIPE OFSSWT ;[103] NO SEP IF NOT /O
SKIPE NOHDR ;[76] BEEN HERE BEFORE?
JRST PNTTXT ;[76] [103] YES, HOP INTO THE MIDDLE AND PRINT A LINE
;FAKE A START OF CONFLICT
MOVE W1,[XWD LSTSYM,SAVSYM] ;[104] SAVE LAST LABEL
BLT W1,SAVSYM+SSBLTE-1 ;[104] ...
;IF READING FROM FILE 2, PRINT THE SEPERATOR LINE ABOVE
TRNE FR,-1 ;[103] FILE 2?
PUSHJ PP,PRNSEP ;[103] SEPARATOR
PUSHJ PP,PNTTXT ;[76] [103] PRINT THE LINE
HRROM FR,NOHDR ;[76] [103] REMEMBER WE DID
POPJ PP, ;[76]
PRNSEP: MOVEI W1,[ASCIZ /****/] ;[103]
PUSHJ PP,PPRINT ;[103]
PUSHJ PP,PNTTAG ;[103]
PJRST PCRLF ;[103]
PNTDEC: IDIVI T,^D10 ;[76] YE OLDE DECIMAL PRINT ROUTINE
HRLM TT,0(PP) ;[76]
SKIPE T ;[76]
PUSHJ PP,PNTDEC ;[76]
HLRZ C,0(PP) ;[76]
ADDI C,"0" ;[76]
PUSHJ PP,TYO ;[76]
AOS TEMP ;[76] COUNT THAT CHARACTER
POPJ PP, ;[76]
;THE FOLLOWING CODE IS USED TO OUTPUT A LINE OF TEXT
PLINEN: MOVEI C,"1"(FR)
PUSHJ PP,PCHART ;PRINT 1 OR 2
MOVEI C,")"
PUSHJ PP,PCHART ;PRINT )
HLRZ C,(W1) ;GET PAGE NUMBER FOR THIS LINE
CAME C,PAGEN ;IS IT THE SAME AS PREVIOUS LINE?
PUSHJ PP,PGNUM ;PRINT NEW PAGE NUMBER
MOVEI C,.CHTAB ;[100] PRINT TAB
PUSHJ PP,FIXBP ;[115] FIX BP TO POINT TO TEXT
PLINE3: PUSHJ PP,PCHART
PRINT: ILDB C,W1 ;GET CHARACTER
JUMPN C,PLINE3 ;LOOP UNTIL A NULL SHOWS UP
POPJ PP,
PPRINT: HRLI W1,(POINT 7,,) ;[115] MAKE ADDRESS INTO A BP
JRST PRINT ;[115] ...
TCRLF: ;THIS TEST IS FOR BINARY COMPARE ON TTY
;ONLY PRINT HEADER ONCE, SINCE TAKES UP SPACE
;ON VT05'S ETC
TLNN FR,IOTTY ;IS OUTPUT TO TTY?
JRST PCRLF ;NO, GIVE EACH PAGE A HEADER
SKIPE ERRCNT ;COUNT IS ZERO FIRST TIME IN
JRST CRLF ;NOT FIRST TIME
PCRLF: ;THIS CODE OUTPUTS A CARRAIGE RETURN-LINE
;FEED AND DECREMENTS THE LINE COUNT
PUSHJ PP,CRLF
SOSN LINCNT ;DECREMENT THE LINES/PAGE COUNT
TLO FR,PAGSW ;THIS MEANS WE GET A NEW HEADING
POPJ PP,
PGNUM: MOVEM C,PAGEN ;SAVE NEW PAGE # AS OLD
PGNUM1: IDIVI C,^D10 ;[100] STANDARD DECIMAL PRINT ROUTINE
HRLM C+1,(PP)
SKIPE C
PUSHJ PP,PGNUM1
HLRZ C,(PP)
ADDI C,"0"
JRST PCHART
;THIS PAGE CONTAINS ROUTINES FOR CHARACTER OUTPUT
;CHARACTERS OUTPUTED AS A STRING OF TEXT COME THROUGH HERE
PCHART: JUMPE C,CPOPJ ;ZERO MEANS A CARRIAGE RETURN
;IF SO WE ARE THROUGH WITH LINE
CAIL C,.CHTAB ;[100] IS CHAR BETWEEN 11 (TAB) AND
CAILE C,.CHCRT ;[100] 15 (CARRIAGE RETURN), OR
CAIL C," " ; .GE. THAN 40 (SPACE)?
JRST PCHAR ;YES, PRINT AS IS
MOVSI C,100(C) ;NO, CONTROL CHAR --SAVE
HRRI C,"^" ;THIS IS CONTROL SYMBOL
PUSHJ PP,PCHAR ;OUTPUT THE "^"
MOVSS C ;AND NOW FOR THE LETTER
PCHAR: TLNN FR,USWBIT ;NO HEADERS FOR UPDATE MODE
TLZN FR,PAGSW ;DO WE NEED A NEW HEADING
JRST TYO ;NO--SIMPLE CHARACTER OUTPUT
SETOM LINCNT ;YES
;THIS CODE OUTPUTS A HEADING COMPRISES OF THE TITLE OF
;EACH FILE AFTER "FILE 1)" AND "FILE 2)"
MOVEM 16,SAVEXS+16 ;SAVE ACCUMULATORS WHILE OUTPUTING HEADING
MOVEI 16,SAVEXS
BLT 16,SAVEXS+15 ;ACCUMULATORS ARE NOW SAVED
TLNE FR,ENDSW ;DON'T BOTHER IF NO ERRORS DETECTED
JRST PCHAR1
MOVEI C,.CHFFD ;[100] FOR NEW PAGE, ISSUE FORM FEED
TLNN FR,NOFORM ;IF 1, SUPPRESS FORM FEED
PUSHJ PP,TYO
MOVEI W1,[ASCIZ /File 1) /]
PUSHJ PP,PPRINT
MOVEI W1,HBUF1
PUSHJ PP,PPRINT ;PRINT FILE 1 NAME
MOVEI W1,HBUF1D ;[51]
PUSHJ PP,PPRINT ;[51] AND ITS CREATION DATE
PUSHJ PP,PCRLF
MOVEI W1,[ASCIZ /File 2) /]
PUSHJ PP,PPRINT
MOVEI W1,HBUF2
PUSHJ PP,PPRINT ;PRINT FILE 2 NAME
MOVEI W1,HBUF2D ;[51]
PUSHJ PP,PPRINT ;[51] AND ITS CREATION DATE
PCHAR1: PUSHJ PP,CRLF ;FOLLOWED BY TWO CARRIAGE RETURN FINE FEEDS
PUSHJ PP,CRLF
MOVEI LPP ;RESET LINES/PAGE COUNT
MOVEM LINCNT
MOVSI 16,SAVEXS ;AND RESTORE ACS
BLT 16,15
MOVE 16,SAVEXS+16
TLZ FR,NOFORM ;CLEAR SUPPRESS FF FLAG AFTER RESTORING AC'S
SKIPE QSW ;Q LISTING ONLY?
JRST QFIN ;YES, GIVE UP ON FIRST ERROR
JRST TYO ;DON'T FORGET ABOUT THAT ORGINAL CHARACTER
;THE CODE ON THIS PAGE IS FOR HANDLING INPUT ERRORS
;THERE ARE TWO TYPES OF ERRORS--EITHER THE FILE IS NOT FOUND
;OR THE DEVICE IS NOT AVAILABLE--THE FORMAT FOR THESE MESSAGES
;IS THE SAME FORMAT USED FOR THE "TECO" MESSAGES.
ERRIA1: SKIPA T,[[ASCIZ/?Input error for input file 1- /]] ;
ERRIA2: MOVEI T,[ASCIZ/?Input error for input file 2- /] ;
ERRIA: HRRZ FIL,INDIR1+1 ;SAVE ERROR CODE
PUSHJ PP,TYPMSG ;TYPE FIRST PART OF MESSAGE
MOVE T,INDIR1 ;GET FILE NAME
PUSHJ PP,PNTSIX ;PRINT
HLLZS T,INDIR1+1 ;GET EXTENSION FREED FROM GARBAGE
JUMPE T,NOEXT ;ANY EXTENSION?
MOVEI C,"." ;YES, TYPE DOT
PUSHJ PP,TYO
MOVE T,INDIR1+1 ;GET EXTENSION
PUSHJ PP,PNTSIX ;PRINT
NOEXT: PUSHJ PP,ERCODP ;PRINT ERROR CODE
MOVEI T,[ASCIZ/) /] ;IN CASE OUT OF BOUNDS
CAIG FIL,ERRLN ;JUST PRINT CLOSE PARENS
SKIPE T,ERRTAB(FIL) ;PICK UP ERROR MESSAGE
PUSHJ PP,TYPMS0
JRST CARR ;THIS WILL OUTPUT TWO C.R. AND EXIT
ERRTAB: [ASCIZ/) File not found/] ; 0
[ASCIZ/) Non-existent UFD/] ; 1
[ASCIZ/) Protection failure/] ; 2
[ASCIZ/) File being modified/] ; 3
0 ; 4 NOT APPLICABLE
0 ; 5
[ASCIZ/) UFD or RIB error/] ; 6
0 ; 7
0 ;10
0 ;11
0 ;12
0 ;13
[ASCIZ/) No room or quota exceeded/] ;14
[ASCIZ/) Write-lock error/] ;15
[ASCIZ/) Not enough monitor table space/] ;16
0 ;17
0 ;20
[ASCIZ/) Cannot supersede UFD/] ;21
0 ;22
[ASCIZ/) SFD not found/] ;23
[ASCIZ/) Search list empty/] ;24
[ASCIZ/) SFD Nesting too deep/] ;25
[ASCIZ/) Path error/] ;26
0 ;27
[ASCIZ/) File cannot be updated/] ;30
0 ;31
0 ;32
ERRLN==.-ERRTAB-1 ;MAXIMUM ERROR CODE KNOWN
ERRA: MOVE T,OUTDEV ;OUTPUT INIT FAIL
MOVEM T,INDEV1
ERRI: MOVEI T,[ASCIZ /?Device /]
PUSHJ PP,TYPMSG ;TYPE BEGINING OF MESSAGE
MOVE T,INDEV1
PUSHJ PP,PNTSIX
MOVEI T,[ASCIZ /: Not available/]
PUSHJ PP,TYPMS0 ;TYPE REST OF MESSAGE
JRST CARR ;INSERT CARRIAGE RETURNS AND EXIT
ERCODP: MOVEI C," " ;PRINT A SPACE
PUSHJ PP,TYO ;
MOVEI C,"(" ;AND OPEN PARENS
PUSHJ PP,TYO ;
MOVEI T,(FIL) ;PICK UP ERROR CODE
ERCOD1: IDIVI T,10 ;GET A DIGIT
HRLM TT,(PP) ;STASH IT
SKIPE T ;DONE?
PUSHJ PP,ERCOD1 ;NO
HLRZ C,(PP) ;GET THE DIGIT
ADDI C,"0" ;ASCII-SIZE IT
PUSHJ PP,TYO ;OUT IT
POPJ PP, ;AND THATS IT
PNTSIX: MOVE TT,[POINT 6,T] ;INIT SIXBIT BYTE POINTER
PNTS1: TLNN TT,770000 ;FINISHED WITH WORD?
POPJ PP, ;YES
ILDB C,TT ;NO, GET CHARACTER
JUMPE C,PNTS1 ;FLUSH SPACES
ADDI C," "-' ' ;[100] CHANGE TO ASCII
PUSHJ PP,TYO
JRST PNTS1
CRLF: MOVEI C,.CHCRT ;[100] OUTPUT A CARRIAGE RETURN-LINE FEED
PUSHJ PP,TYO
MOVEI C,.CHLFD ;[100] NOW THE LINE FEED
TYO: SOSG CTOBUF+2 ;DECREMENT BUFFER COUNT
PUSHJ PP,DMPOUT ;BUFFER WAS FULL
IDPB C,CTOBUF+1 ;DEPOSIT CHAR.
CAIN C,.CHLFD ;[100] LINE FEED?
TLNN FR,IOTTY ;WHILE DOING 1 OUTPUT PER LINE?
POPJ PP, ;NO
DMPOUT: OUT CTL, ;YES, OUTPUT BUFFER
POPJ PP, ;OK
JSP T,ERROUT
ASCIZ /?Output device error/
ERRONO: MOVEI T,[ASCIZ/?Output device error- /]
PUSHJ PP,TYPMSG ;[24]
MOVE T,OUTDEV ;[24]AND DEVICE
PUSHJ PP,PNTSIX ;[24]CANT DO OUTPUT
MOVEI T,[ASCIZ/: cannot do output/] ;[24]
PUSHJ PP,TYPMS0 ;[24]
JRST CARR ;[24]FINISH UP
ERROEF:
MOVE T,OUTDIR ;[24]SET UP DIR
MOVE TT,OUTDIR+1 ;[24]
MOVEM T,INDIR1 ;[24]FOR TYPEOUT
MOVEM TT,INDIR1+1 ;[24]
MOVEI T,[ASCIZ/?Output ENTER error for /]
JRST ERRIA ;[24]
ERRCOR: MOVEI T,[ASCIZ /?2K core needed and not available/]
PUSHJ PP,TYPMSG
EXIT ;PRINT MESSAGE AND EXIT
ERROUT: PUSHJ PP,TYPMSG ;OUTPUT ERROR
JRST CARR ;THROW IN TWO CR AND TRY AGAIN
TYPB: PUSHJ PP,TYPTAB
PUSHJ PP,TYCELL
PUSHJ PP,TYPSP
TYCELL: SKIPN TT,DIG ;[63] IF ZERO MEANS HW SIZE NEEDED
MOVEI TT,6 ;CALCULATER CONTENTS A A MEMORY WORD
;WHICH IS STORED IN AC T
;SHIFT A CHAR. INTO ACC AND ADD 60
;DO IT TO MAKE IT ASCII; DO THIS 6 TIMES
SETZM DIG ;[63] SET ZERO FOR NEXT TIME
TYCEL2: MOVEI C,0 ;[63] ADD THE LABEL
LSHC C,3
ADDI C,"0"
PUSHJ PP,PCHAR
SOJG TT,TYCEL2 ;[63]
POPJ PP,
TYPSP: MOVEI C," "
JRST TYO
TYPTB2: PUSHJ PP,TYPTAB
TYPTAB: MOVEI C,.CHTAB ;[100]
JRST TYO
TYCNT: AOS ERRCNT
HRLZ T,CNT
JRST TYCELL
;ROUTINES FOR OUTPUTING ERROR MESSAGES
TYPMSG: PUSHJ PP,INITTY ;INTIALIZE TTY
PUSHJ PP,CRLF ;OUTPUT A CARRIAGE RETURN
TYPMS0: HRLI T,(POINT 7,,) ;THIS IS POINTER FOR ERROR MESSAGE
SKIPA
PUSHJ PP,TYO
TYPMS1: ILDB C,T ;LOAD A CHAR. FROM ERROR MESSAGE
JUMPN C,.-2 ;ALL ERROR MESSAGES END WITH A ZERO
POPJ PP, ;THROUGH WITH ERROR MESSAGE
CARR: PUSHJ PP,CRLF ;COMMON EXIT FOR ERROR MESSAGES
PUSHJ PP,CRLF
JRST COMP ;GO TO VERY BEGINNING
;INITIALIZE TTY FOR ERROR MESSAGES
INITTY: CLOSE CTL,
RELEAS CTL,
INIT CTL,1
SIXBIT /TTY/
XWD CTOBUF,CTIBUF
HALT
INBUF CTL,1
OUTBUF CTL,1
POPJ PP,
;HELP MESSAGE TEXT
HELP: PUSHJ PP,EAT ;[45] READ TO END OF LINE
MOVE 1,['FILCOM'] ;NAME OF HELP FILE
PUSHJ PP,.HELPR ;READ IT
JRST COMPGO ;PRINT * AGAIN
;ROUTINE TO GET A LEGITIMATE CHARACTER
GCHAR: SKIPN OLDCHR(FR) ;[44] CHARACTER LEFT FROM LAST TIME?
JRST GCHAR0 ;[44] NO, PROCEED AS USUAL
MOVE C,OLDCHR(FR) ;[44] YES, USE IT INSTEAD OF A NEW ONE
SETZM OLDCHR(FR) ;[44] ZERO THE FLAG
JRST GCHR00 ;[44] SKIP CHECKS ALREADY MADE
GCHAR0: TLNE FR,@EOFTBL(FR) ;[44] EOF SEEN?
JRST NULL ;YES, RETURN NULL
SOSG @CNTTBL(FR) ;DECREMENT BUFFER COUNT
JSP C,@[EXP GCHAR1,GCHAR2](FR) ;BUFFER EMPTY- DO "INPUT"
SKIPN @CNTTBL(FR) ;DID WE GET ANY DATA
JRST GCHAR ;NO
ILDB C,@BYTTBL(FR) ;YES, GET A CHARACTER
JUMPE C,GCHAR ;GET RID OF NULLS
CAIE C,.CHLFD ;[100] LINE FEED?
CAIN C,.CHVTB ;[100] NO-VERTICAL TAB?
JRST EOL ;YES, RETURN WITH LINE-END FLAG SET
CAIN C,.CHCRT ;[100] CARRIAGE RETURN?
JRST [SETOM CRSEEN(FR) ;[44] YES, POSSIBLY FLUSH
JRST GCHAR] ;[44] SO GO GET ANOTHER
CAIN C,.CHFFD ;[100] IS IT A FORM FEED?
JRST FORM ;YES
SKIPN CRSEEN(FR) ;[44] WAS LAST CHARACTER A CR?
JRST GCHR00 ;[44] NO, WE HAVE WHAT WE WANT
MOVEM C,OLDCHR(FR) ;[44] YES, SAVE THIS ONE FOR NEXT TIME
MOVEI C,.CHCRT ;[44] [100] RETURN A CARRIAGE-RETURN
JRST EOL ;[44] AS AN EOL CHARACTER
GCHR00: HRL C,@SEQTBL(FR) ;[44] GET SEQUENCE # BIT (IF IT EXISTS)
TLZ C,777776 ;TURN OFF ALL BUT SEQ. # BIT
POPJ PP, ;NO, RETURN WITH CHAR
GCHAR1: INPUT IN1, ;INPUT FOR FILE 1
STATO IN1,762000 ;ERRORS OR END OF FILE?
JRST (C) ;NO
STATO IN1,742000 ;YES, EOF?
JRST EOF ;YES END OF FILE
JSP T,ERROUT
ASCIZ /?File 1 read error/
GCHAR2: INPUT IN2,
STATO IN2,762000
JRST (C)
STATO IN2,742000
JRST EOF
JSP T,ERROUT
ASCIZ /?File 2 read error/
SEQTBL: Z @INBUF1+1 ;POINTS TO ADR OF LAST CHAR FILE #0
Z @INBUF2+1 ;DITTO FILE #1
BYTTBL: INBUF1+1 ;ADR OF BYTE POINTER FILE #0
INBUF2+1 ;DITTO FILE #1
EOFTBL: EOF1SW ;EOF FLAG FOR FILE 1
EOF2SW ;EOF FLAG FOR FILE 2
CNTTBL: INBUF1+2 ;POINTS TO FILE 1 CHAR COUNT
INBUF2+2 ;DITTO FILE 2
EOF: TLO FR,@EOFTBL(FR) ;SET EOF FLAG
NULL: TDZA C,C ;THEN RETURN NULL CHAR
FORM: AOS PAGNUM(FR) ;INDEX PAGE NUMBER
EOL: TLO C,(1B0) ;SET BIT 0 TO SHOW END-OF-LINE
SETZM CRSEEN(FR) ;[44] ZERO A FLAG
POPJ PP,
;HERE TO SKIP REST OF FILES, AND TAKE A QUICK EXIT.
QFIN: AOS ERRCNT ;ENSURE AT LEAST ONE ERROR SEEN
JRST FIN2 ;[30] TAKE QUICK EXIT.
NAME1: SETZB ACDEV,ACDEL ;ZERO REGISTERS WHICH WILL RETURN THE NAMES
SETZB ACFILE,ACEXT
SETZB ACPPN,EXTFL2 ;INIT PROJ,PROG NUMBER TO [0,0]
TLZ FR,CTYPF ;CLEAR COMMAND TYPED FLAG
NAME3: MOVSI ACPNTR,(POINT 6,0) ;SET POINTER
SETZB TT,0 ;THE SIXBIT NAME WILL BE STORED IN THE AC0
GETIOC: PUSHJ PP,TTYIN ;GET INPUT CHARACTER
CAIN C,.CHCNZ ;[45] [100] AN EOF TERMINATES A FILE NAME
JRST [SETOM XITFLG ;[45] [100] AND CAUSES US TO EXIT LATER
JRST TERM] ;[45] [100] HANDLE WHAT WE HAVE
CAILE C,.CHCRT ;[45] [100] THIS IS ANOTHER WAY TO GET A FILE NAME
CAIN C,.CHESC ;[100] ALT MODE?
JRST TERM ;YES
CAIE C,"_" ;ONE KIND OF SEPERATOR
CAIN C,"," ;THIS ALSO MEANS WE HAVE FINISHED A TERM
JRST TERM ;TERM HAS BEEN READ
CAIN C,"/" ;IS THERE A SWITCH?
JRST GETSW ;YES
TLO FR,CTYPF ;SET COMMAND TYPED FLAG
CAIN C,":" ;HAVE WE BEEN GETTING A DEVICE NAME
JRST DEVICE ;YES
CAIN C,"." ;OR A FILE NAME
JRST [CAIN ACDEL,".";[75] IF WE'VE SEEN A . IN THE LAST PHRASE,
JRST ERRDEI ;[75] GIVE AN ERROR
JRST NAME] ;[75] OTHERWISE, PROCESS A FILENAME
CAIN C,"[" ;THIS CHAR STARTS A PROJ,PROG NUMBER
JRST GETPP
;ALL OTHER CHARACTERS SHOULD BE ALPHANUMERIC FOR FILENAMES
CAIL C,"A"
CAILE C,"Z"
JRST [CAIL C,"0" ;NOT ALPHABETIC, IS IT NUMERIC?
CAILE C,"9"
JRST CTLSER ;NOT ALPHANUMERIC, COMMAND ERROR
JRST .+1]
TRC C," "^!' ' ;[100] CONVERT TO SIXBIT
TLNE ACPNTR,770000 ;HAVE WE STORED SIX BYTES?
IDPB C,ACPNTR ;NO
JRST GETIOC ;GET ANOTHER CHAR.
TTYIN: SOSG CTIBUF+2 ;DECREMENT CHARACTER COUNT, ANY LEFT?
INPUT CTL, ;NO, GET A BUFFER FULL
ILDB C,CTIBUF+1 ;GET CHARACTER
JUMPE C,TTYIN ;FLUSH NULLS
CAIE C,.CHAL2 ;[100]
CAIN C,.CHALT ;[100]
MOVEI C,.CHESC ;[100] CHANGE ALL ALT MODES TO NEW
CAIN C,"="
MOVEI C,"_" ;= WILL EVENTUALLY REPLACE _
CAIL C,"a" ;[100]
CAILE C,"z" ;[100]
CAIA ;[100]
TRC C,"a"^!"A" ;[100] CHANGE LOWER CASE TO UPPER CASE
CAIE C," " ;[100] SKIP BLANKS
CAIN C,.CHTAB ;[100] AND TABS
JRST TTYIN
POPJ PP, ;NO, EXIT
DEVICE: SKIPA ACDEV,0 ;DEVICE NAME
NAME: MOVE ACFILE,0 ;FILE NAME
MOVE ACDEL,C ;SET DELIMITER
JRST NAME3 ;GET NEXT SYMBOL
TERM: PUSHJ PP,CHKTRM ;[71] CHECK FOR LAST DELIMETER SEEN
CAIE ACDEL,"." ;IF PERIOD,
POPJ PP,
HLRZ 0,ACEXT ;[71] PUT EXTENSION IN RH FOR TABLE SEARCH
MOVSI T,EXTBL-EXTBLE ;NEGATIVE WORD COUNT
CAIE 0,@EXTBL(T) ;MATCH EXT?
AOBJN T,.-1
HLLZ T,EXTBL(T) ;GET FLAGS
MOVEM T,EXTFL2 ;SAVE THEM
POPJ PP, ;EXIT
EXTBL: XDFBIT,,'SAV'
XDFBIT,,'LOW'
XDFBIT,,'SVE'
HSGBIT,,'SHR'
HSGBIT,,'HGH'
WDFBIT,,'UNV' ;[61]
WDFBIT,,'REL'
WDFBIT,,'XPN'
WDFBIT,,'CHN'
WDFBIT,,'DMP'
WDFBIT,,'BIN'
WDFBIT,,'RIM'
WDFBIT,,'RTB'
WDFBIT,,'RMT'
WDFBIT,,'BAC'
WDFBIT,,'BUG'
WDFBIT,,'CAL'
WDFBIT,,'DAE'
WDFBIT,,'DCR'
WDFBIT,,'MSB'
WDFBIT,,'OVR'
WDFBIT,,'QUC'
WDFBIT,,'QUE'
WDFBIT,,'QUF'
WDFBIT,,'SFD'
WDFBIT,,'SYS'
WDFBIT,,'UFD'
EXEBIT,,'EXE'
WDFBIT,,'OVL' ;[73] Overlay
WDFBIT,,'ATR' ;[73] SIMULA attribute file
WDFBIT,,'DBS' ;[73] DBMS file
WDFBIT,,'QUD' ;[73] Queue data file
WDFBIT,,'SCH' ;[73] DBMS file
WDFBIT,,'APL' ;[73] APL workspace default extension
WDFBIT,,'SYM' ;[73] ALGOL file
EXTBLE: 0 ;END OF TABLE
;CHKTRM - Routine to check if a filename or extension has been parsed into
; AC0. If so, store it in the appropriate AC (ACFILE or ACEXT). This
; routine also checks to see if double names have been typed and gives an
; error message if true. The only delimeters legally stored in ACDEL are
; comma and colon; if anything else is there, the error is internal;
; but don't report it since FILCOM is very simple minded about these
; things.
CHKTRM: JUMPE 0,CPOPJ ;[71] IF NO CHARACTERS STORED, CONTINUE
CAIE ACDEL,"." ;[71] IF DELIMETER IS A PERIOD, AC0 CONTAINS
JRST CHKTR1 ;[71] AN EXTENSION
SKIPE ACEXT ;[71] IF AN EXTENSION HAS ALREADY BEEN PARSED,
JRST ERRDEI ;[71] GIVE AN ERROR
HLLZ ACEXT,0 ;[71] STORE THE EXTENSION IN LH
JRST CHKTR3 ;[71] NOW ZERO SOME STUFF AND RETURN
;[71] HERE IF DELIMETER IS NOT A PERIOD
CHKTR1: JUMPE ACDEL,CHKTR2 ;[71] IF NO DELIMETER HAS BEEN TYPED OR IT'S A
CAIE ACDEL,":" ;[71] COLON, THEN CHARS IN AC0 ARE A FILENAME
POPJ PP, ;[71] SHOULD NEVER GET HERE SINCE ONLY ":", "."
;[71] ARE STORED IN ACDEL. HOWEVER, CONTINUE
;[71] PARSING IN THE SPIRIT OF FILCOM
CHKTR2: SKIPE ACFILE ;[71] IF A FILENAME HAS ALREADY BEEN PARSED,
JRST ERRDFI ;[71] GIVE AN ERROR
MOVE ACFILE,0 ;[71] STORE THE FILENAME
;[71] FALL INTO CHKTR2 ROUTINE
CHKTR3: SETZB TT,0 ;[71] CLEAR AC'S
MOVSI ACPNTR,(POINT 6,0) ;[71] RESET BYTE POINTER
POPJ PP, ;[71] AND RETURN
GETSW: PUSHJ PP,TTYIN ;A SWITCH HAS BEEN DETECTED
MOVSI T,SWTBL-SWTBLE ;SET UP NEG. COUNT FOR TABLE SEARCH
CAIE C,@SWTBL(T) ;FOUND CHAR? (INDIRECT=INDEX=0)
AOBJN T,.-1
JUMPGE T,GETSW1 ;JUMP IF NOTHING FOUND
TDOA FR,SWTBL(T) ;TURN ON FLAG (GARBAGE IN RIGHT)
GETSWE: SETOM QSW ;SET /Q SEEN
PUSHJ PP,CHKTRM ;[71] CHECK IF CELLS NEED TO BE STORED
JRST GETIOC ;GET NEXT PART OF COMMAND
GETSW1: CAIN C,"H" ;REQUEST FOR HELP?
JRST HELP ;YES
CAIN C,"Q" ;/Q?
JRST GETSWE ;YES
CAIN C,"O" ;[76] WANT SYMBOL OFFSETS?
JRST [SETOM OFSSWT ;[76] YES
JRST GETIOC] ;[76] GET NEXT PART OF COMMAND
CAIN C,"T" ;[105] WANT FILE ALWAYS?
JRST [SETOM OPTSWT ;[105] YES
JRST GETIOC] ;[105] ON WITH COMMAND
CAIN C,"I" ;[117] WANT CASE INVARIANT COMPARE?
JRST [SETOM OPISWT ;[117] YES
JRST GETIOC] ;[117] ONWARDS
SETZ T, ;START WITH ZERO
PUSHJ PP,GETOC2 ;BUILD OCTAL NUMBER IN T
JUMPE T,ERRSWT ;[71] ERROR IF NO NUMBER
MOVEM T,NUMLIN ;SAVE AS # EXTRA LINES TO MATCH (AFTER 1ST)
MOVEM T,USERL ;[122] SAVE AN UNDOCTORABLE SECOND COPY
CAIN C,"L" ;[34] TEST FOR LIMIT SWITCHES
JRST [SETOM LSEEN ;[34] We saw the /L switch
JRST SETLIM+1] ;[34] Set up limits
CAIN C,"U" ;EITHER UPPER OR LOWER
JRST SETLIM ;FOUND ONE
JRST ERRSWT ;[71] REPORT UNKNOWN SWITCH TYPED
SETLIM: SKIPA UPPER,T ;UPPER LIMIT /0000U
MOVE LOWER,T ;LOWER LIMIT /0000L
PUSHJ PP,CHKTRM ;[71] SEE IF SWITCH TERMINATED A CELL
JRST GETIOC ;GET MORE COMMAND
SWTBL: SSWBIT,,"S" ;/S SUPPRESSES COMPARING SPACES, TABS
CSWBIT!SSWBIT,,"C" ;/C DON'T COMP. COMMENTS OR SPACING
ALLSW,,"B" ;/B ALLOWS COMPARING BLANK LINES
ASWBIT,,"A" ;/A COMPARE LINE BY LINE (ASCII)
WSWBIT,,"W" ;/W COMPARE WORD FOR WORD (BINARY)
XSWBIT,,"X" ;/X EXPAND SAV FILE FIRST (BINARY)
EXEBIT,,"E" ;/E COMPARE EXE FILES [25]
USWBIT+ALLSW,,"U" ;/U MANUAL UPDATE MODE
SWTBLE: ;END OF TABLE
;ERROR MESSAGES FOR SWITCH PARSING IN COMMAND LINE
ERRSWT: PUSH PP,C ;[71] SAVE THE UNKNOWN SWITCH ARGUMENT
PUSHJ PP,EAT ;[71] GET THE COMMAND IN CASE A ^Z WAS TYPED
MOVEI T,[ASCIZ /?Command error -- Unknown switch /] ;[71]
PUSHJ PP,TYPMSG ;[71]
POP PP,C ;[71] RESTORE THE CHARACTER
PUSHJ PP,TYO ;[71] CHARACTER IS IN C ALREADY
JRST CARR ;[71] FINISH UP AND TRY AGAIN
ERRDFI: PUSHJ PP,EAT ;[71] GET THE COMMAND IN CASE A ^Z WAS TYPED
JSP T,ERROUT ;[71]
ASCIZ /?Command error -- Double filename illegal/ ;[71]
ERRDEI: PUSHJ PP,EAT ;[71] GET THE COMMAND IN CASE A ^Z WAS TYPED
JSP T,ERROUT ;[71] IF AN EXTENSION ALREADY EXISTS
ASCIZ /?Command error -- Double extension illegal/
GETPP: PUSHJ PP,CHKTRM ;[71] CHECK IF [ TERMINATED A CELL
PUSHJ PP,GETOCT ;BUILD THE PROJ,PROG NUMBER
CAIN C,"-" ;WAS THIS DASH? (DEFAULT PATH)
JRST [ JUMPN T,CTLSER;MUST BE ONLY CHAR THEN
JRST DEFPTH ] ;GO DEFAULT THE PATH
CAIE C,","
JRST CTLSER
HRLZ ACPPN,T ;PUT PROJ NUMBER IN LEFT HALF
PUSHJ PP,GETOCT
HRR ACPPN,T ;PUT PROG NUM IN RIGHT HALF
GETPPN T, ;[23] GET JOB'S PPN
JFCL
TLNN ACPPN,777777 ;[23] PROJ NUMBER 0?
HLL ACPPN,T ;[23] YES, PUT JOB'S PROJ NUMBER IN LEFT HALF
TRNN ACPPN,777777 ;[23] PROG NUMBER 0?
HRR ACPPN,T ;[23] YES, PUT JOB'S PROG NUMBER IN RIGHT HALF
CAIN C,"]" ;SIMPLE PPN?
JRST GETIOC ;YES,CONTINUE WITH COMMAND
PUSHJ PP,CHKEOL ;[102] END OF LINE?
JRST TERM ;[102] YES, CONTINUE SCANNING
MOVE T,FILCNT ;GET FILE WE ARE DOING
MOVE T,[EXP OUTDIR,INDIR1](T) ;GET PROPER FILE
MOVEM ACPPN,PTHPPN(T) ;STORE PPN
MOVEI ACPPN,PTHADR(T) ;SET PPN TO POINT TO PATH BLOCK
MOVEI T,PTHSFD(T) ;SET UP FOR INPUT OF SFDS
HRLI T,-MAXSFD ;SET UP COUNTER TOO
GETPP1: CAIN C,"]" ;CLOSED WITH BRACKET?
JRST GETIOC ;YES,CONTINUE COMMAND SCANNING
PUSHJ PP,CHKEOL ;[102] END OF LINE?
JRST TERM ;[50] YES, CONTINUE SCANNING
SKIPGE T ;COUNT NEGATIVE?
CAIE C,"," ;IS THIS SFD SPECIFICATION?
JRST CTLSER ;NO, INDICATE ERROR
PUSHJ PP,RD6 ;READ THE SFD NAME
JUMPE TT,CTLSER ;IF NULL,ITS ERROR
MOVEM TT,0(T) ;STORE SFD
SETZM 1(T) ;INSURE NULL TERMINATOR
AOBJN T,.+1 ;INCREMENT BOTH PARTS OF SFD POINTER
JRST GETPP1 ;LOOP FOR NEXT ONE
;CHKEOL - CALL HERE TO CHECK FOR END OF LINE CHARACTER. RETURN IF END OF LINE,
; SKIP RETURN IF NOT.
CHKEOL: CAIN C,.CHESC ;[50] [100] ESCAPE?
POPJ PP, ;YES.
CAIE C,.CHCNZ ;[50] [100] MAYBE AN END OF FILE?
CAIG C,.CHCRT ;[50] [100] LF, FF, ETC.?
POPJ PP, ;YES.
JRST CPOPJ1 ;NOT END OF LINE.
GETOCT: MOVEI T,0 ;BUILD AN OCTAL NUMBER
GETOC1: PUSHJ PP,TTYIN
GETOC2: CAIL C,"0"
CAILE C,"7"
POPJ PP, ;RETURN ON A NON OCTAL DIGIT
LSH T,3
ADDI T,-"0"(C)
JRST GETOC1
RD6: PUSH PP,T ;SAVE T REG
MOVE T,[POINT 6,TT] ;STORE INTO TT
SETZ TT, ;CLEAR ARGUMENT
RD61: PUSHJ PP,TTYIN ;GET A CHARACTER
CAIL C,"0" ;LESS THAN 0?
CAILE C,"Z" ;OR GREATER THAN Z?
JRST TPOPJ ;YES,RETURN
CAILE C,"9" ;LESS THAN 9 OR
CAIL C,"A" ;GREATER THAN A?
JRST RD62 ;ITS OK
TPOPJ: POP PP,T ;RESTORE TEMP REGISTER
POPJ PP, ;RETURN
RD62: SUBI C," " ;CONVERT TO SIXBIT
TRNN TT,77 ;IF WORD NOT FULL,
IDPB C,T ;STORE BYTE
JRST RD61 ;LOOP FOR NEXT CHARACTER
DEFPTH: MOVE T,FILCNT ;GET FILE INDEX
MOVE T,[EXP OUTDIR,INDIR1](T) ;GET RIGHT DIR BLOCK
MOVEI ACPPN,PTHADR(T) ;PPN IS 0,,PATH BLOCK ADDRESS
SETOM PTHADR(T) ;READ DEFAULT PATH
MOVEI TT,PTHADR(T) ;POINT TO PATH BLOCK
HRLI TT,MAXSFD+4 ;LENGTH OF AREA AVAILABLE
PATH. TT, ;ASK MONITOR FOR DEFAULT PATH
JRST NOPTH ;NO AVAILABLE
PUSHJ PP,TTYIN ;GET NEXT CHARACTER
CAIN C,"]" ;CLOSES IT RIGHT?
JRST GETIOC ;RIGHT,GET REST OF STRING
JRST CTLSER ;OTHERWISE,COMPLAIN
NOPTH: JSP T,ERROUT ;IF PATH. UUO FAILED
ASCIZ /?PATH. UUO required to default file path/
EAT1: PUSHJ PP,TTYIN ;[45] GET A CHARACTER INTO C
EAT: CAIG C,.CHFFD ;[45] [100] IN THE RANGE OF FORM FEED
CAIGE C,.CHLFD ;[45] [100] DOWN TO LINE FEED?
CAIN C,.CHESC ;[45] [100] NO, IS IT AN ALTMODE?
POPJ PP, ;[45] YES! RETURN WITH EOL CHAR
CAIN C,.CHBEL ;[45] [100] IS IT A ^G?
POPJ PP, ;[45] YES, THAT ENDS LINE TOO
CAIE C,.CHCNZ ;[45] [100] IS IT A ^Z?
JRST EAT1 ;[45] NO, EAT ANOTHER CHARACTER
SETOM XITFLG ;[45] IT'S ^Z, MARK TO EXIT LATER
POPJ PP, ;[45] RETURN
;CREATE PAGE HEADER FOR LISTING FILES CONSISTING OF:
;DEVICE:FILENAME.EXT[PROJ,PROG,SFD,SFD,..,SFD] CREATED MMHH DAY-MONTH-YEAR
HEADER: MOVEI TT,IN1 ;ASSUME FIRST FILE
SETZM TEMP ;[51] SET SO WITH TEMP
CAIE T,HBUF1 ;IS IT?
JRST [MOVEI TT,IN2 ;[51] NO
AOS TEMP ;[51] MARK WITH TEMP
JRST .+1] ;[51] RETURN TO MAINLINE CODE
MOVEM TT,PTHBLK+.PTFCN;STORE AS FUNCTION
HRLI T,440700 ;MAKE ADDRESS INTO BYTE POINTER
MOVEM T,HPOINT ;AND SAVE FOR FUTURE USE
MOVE TT,[MAXSFD+4,,PTHBLK] ;SET UP FOR PATH.
SETZM PTHBLK+.PTPPN ;CLEAR PPN AND
SETZM PTHBLK+.PTPPN+1 ;FIRST SFD FROM LIST
PATH. TT, ;DO IT
SKIPA T,INDEV1 ;USE DEVICE FROM LOOKUP BLOCK IF FAILS
MOVE T,PTHBLK+.PTFCN ;OTHERWISE USE THE PATH. DEVICE
PUSHJ PP,HEDST6
MOVEI C,":"
PUSHJ PP,HEDDPB ;DEPOSIT COLON INTO HEADER
DEVCHR T, ;GET DEVICE CHARACTERISTICS
TLNN T,(1B15) ;DOES DEVICE HAVE A DIRECTORY?
JRST [PUSHJ PP,HEAD8;[51] DEPOSIT A NULL
JRST PRETTY] ;[51] CLEAN UP HEADER AND RETURN
SKIPE T,INDIR1
PUSHJ PP,HEDST6 ;IF FILE NAME NOT NULL, PRINT IT
HLLZ T,INDIR1+1 ;ISOLATE EXTENSION
JUMPE T,HEAD2 ;DON'T PRINT IF EXTENSION NULL
MOVEI C,"."
PUSHJ PP,HEDDPB ;PUT DOT INTO HEADER
HLLZ T,INDIR1+1
PUSHJ PP,HEDST6 ;PRINT EXTENSION
HEAD2: SKIPN T,PTHBLK+.PTPPN ;GET PPN FROM PATH, IF AVAILABLE
MOVE T,INDPPN ;OTHERWISE USE LOOKUP PPN
JUMPE T,HEAD4 ;SKIP WHOLE THING IF STILL NO PPN
MOVEI C,"[" ;PRINT IT
PUSHJ PP,HEDDPB
SKIPE PTHBLK+.PTPPN+1 ;ANY SFD'S?
JRST PRTPTH ;IF PATH (SFDS) , PRINT DIFFERENTLY
PUSH PP,T ;SAVE PROJ,PROG NUMBER
HLRZS T ;CLEAR PROG NUMBER
PUSHJ PP,HED8 ;PRINT PROJECT #
MOVEI C,","
PUSHJ PP,HEDDPB
POP PP,T ;RESTORE PROG NUMBER
ANDI T,-1 ;ISOLATE IT
PUSHJ PP,HED8 ;PRINT PROGRAMMER #
HEAD3: MOVEI C,"]"
PUSHJ PP,HEDDPB
HEAD4: MOVE TT,HPOINT ;[51] GET THE BYTE POINTER
MOVEM TT,HBPT2 ;[51] ASSUME 2ND FILE AND STORE
SKIPN TEMP ;[51] WAS IT THE FIRST FILE?
MOVEM TT,HBPT1 ;[51] YES, STORE IT RIGHT
SETZ C, ;[51] MAKE A NULL
PUSHJ PP,HEDDPB ;[51] TERMINATE THE FILESPEC
MOVE TT,[POINT 7,HBUF2D] ;[51] CREA. DATE POINTER
SKIPN TEMP ;[51] SECOND FILE?
MOVE TT,[POINT 7,HBUF1D] ;[51] NO, TRY AGAIN
MOVEM TT,HPOINT ;[51] SET UP FOR HEDDPB
MOVE T,[ASCII / crea/]
PUSHJ PP,HEDST7 ;PUT " CREA" INTO BUFFER
MOVE T,[ASCII /ted: /]
PUSHJ PP,HEDST7
LDB T,[POINT 11,INDIR1+2,23] ;GET CREATION TIME
IDIVI T,^D60 ;CHANGE TO HOURS AND MINUTES
PUSH PP,T+1 ;SAVE MINUTES
PUSHJ PP,HED10 ;PRINT HOURS
POP PP,T
PUSHJ PP,HED10 ;PRINT MINUTES
MOVEI C," "
PUSHJ PP,HEDDPB ;PUT A SPACE AFTER THE TIME
HEDDAT: LDB T,[POINT 12,INDIR1+2,35] ;GET LOW 12 BITS OF DATE
LDB T+1,[POINT 3,INDIR1+1,20] ;GET HIGH 3 BITS OF DATE
DPB T+1,[POINT 3,T,23] ;MERGE THE TWO PARTS
IDIVI T,^D31 ;STRIP OFF DAY OF MONTH
PUSH PP,T ;SAVE THE REST
MOVEI T,1(T+1)
PUSHJ PP,HED10 ;PRINT DAY
POP PP,T
IDIVI T,^D12
PUSH PP,T ;SAVE YEAR
MOVE T,MONTAB(T+1) ;GET MONTH TEXT
PUSHJ PP,HEDST7 ;[47] PRINT IT IN ASCII
POP PP,T
MOVEI T,^D64(T) ;[62] GET YEAR
PUSHJ PP,HED10 ;PRINT YEAR
PUSHJ PP,HEAD8 ;[51] DEPOSIT A NULL
; JRST PRETTY ;[51] CLEAN UP HEADER AND RETURN
PRETTY: SKIPN TEMP ;[51] ARE WE ON THE 2ND FILE?
POPJ PP, ;[51] NO, CLEAN UP HEADERS LATER
SKIPE HBUF1D ;[51] DOES EITHER FILE
SKIPN HBUF2D ;[51] LACK A CREATION DATE?
POPJ PP, ;[51] YES, NOTHING TO CLEAN UP
HLRZ TT,HBPT1 ;[51] FIND 1ST FILE'S LAST CHAR
HRLZI T,-5 ;[51] AOBJN COUNTER
PRET1: CAME TT,PRET4(T) ;[51] T'TH CHAR IN THE LAST WORD?
AOBJN T,PRET1 ;[51] NO, TRY AGAIN
HRRZ TT,HBPT1 ;[51] HOW MANY FULL WORDS?
SUBI TT,HBUF1 ;[51] GET THAT BY SUBTRACTION
IMULI TT,5 ;[51] GET NO. OF CHARS
ADDI TT,1(T) ;[51] IN THE 1ST FILESPEC
MOVEM TT,TEMP ;[51] SAVE IT
HLRZ TT,HBPT2 ;[51] NOW DO THE SAME
HRLZI T,-5 ;[51] CALCULATION FOR THE
PRET2: CAME TT,PRET4(T) ;[51] SECOND FILE
AOBJN T,PRET2 ;[51]
HRRZ TT,HBPT2 ;[51] ADDRESS OF LAST WORD
SUBI TT,HBUF2 ;[51] NO. OF FULL WORDS
IMULI TT,5 ;[51] CHARS IN THOSE WORDS
ADDI TT,1(T) ;[51] PLUS SOME LEFT OVER
CAMN TT,TEMP ;[51] ARE THE COUNTS THE SAME?
POPJ PP, ;[51] YES, WE ARE DONE!
MOVE T,HBPT1 ;[51] NO, ASSUME THE 1ST IS LESS
CAMG TT,TEMP ;[51] IS THE 2ND LESS?
MOVE T,HBPT2 ;[51] YES, POINT TO ITS STRING
SUB TT,TEMP ;[51] GET THE DIFFERENCE IN LENGTH
MOVMS TT ;[51] MAKE SURE IT'S POSITIVE
MOVEI C," " ;[51] PAD THE STRING WITH SPACES
PRET3: IDPB C,T ;[51] ADD A SPACE
SOJG TT,PRET3 ;[51] LOOP AROUND
SETZ C, ;[51] GET A NULL
IDPB C,T ;[51] END THE STRING WITH IT
POPJ PP, ;[51] WE ARE DONE
PRET4: 350700 ;[51] LEFT HALVES OF ASCII BYTE POINTERS
260700 ;[51]
170700 ;[51]
100700 ;[51]
010700 ;[51]
HEAD8: MOVEI C,.CHNUL ;[100] PUT NULL INTO BUFFER
HEDDPB: IDPB C,HPOINT
POPJ PP,
HEDST7: SKIPA TT,[POINT 7,T] ;PRINT 7 BIT ASCII
HEDST6: MOVE TT,[POINT 6,T] ;PRINT SIXBIT
HEDS2: TLNN TT,760000
POPJ PP, ;DONE
ILDB C,TT
JUMPE C,HEDS2
TLNN TT,000100
ADDI C," "-' ' ;[100] FOR SIXBIT, CONVERT TO ASCII
PUSHJ PP,HEDDPB ;OUTPUT CHARACTER
JRST HEDS2
HED8: TDZA W3,W3 ;PRINT OCTAL NUMBERS
HED10: MOVEI W3,2 ;PRINT DECIMAL NUMBERS
MOVE W2,W3 ;FORCE 2 DIGITS FOR DECIMAL NUMBERS
HED10A: IDIVI T,8(W3)
HRLM T+1,(PP)
SOSG W2 ;FORCE DIGITS UNTIL COUNT EXPIRES
SKIPE T
PUSHJ PP,HED10A
HLRZ C,(PP)
ADDI C,"0"
JRST HEDDPB
MONTAB: ASCII /-Jan-/
ASCII /-Feb-/
ASCII /-Mar-/
ASCII /-Apr-/
ASCII /-May-/
ASCII /-Jun-/
ASCII /-Jul-/
ASCII /-Aug-/
ASCII /-Sep-/
ASCII /-Oct-/
ASCII /-Nov-/
ASCII /-Dec-/
PRTPTH: HLRZ T,PTHBLK+.PTPPN ;GET PATH PPN
PUSHJ PP,HED8 ;INSERT INTO HEADER
MOVEI C,"," ;SEPARATE PROJ,PROG
PUSHJ PP,HEDDPB ;
HRRZ T,PTHBLK+.PTPPN ;GET PROG NUMBER
PUSHJ PP,HED8 ;STORE INTO HEADER
SETZ W1, ;START AT BASE OF SFDS
PRTPLP: MOVEI C,"," ;SEPARATE PPN,SFDS BY COMMA
PUSHJ PP,HEDDPB ;
MOVE T,PTHBLK+.PTPPN+1(W1) ;GET AN SFD NAME
PUSHJ PP,HEDST6 ;STORE INTO HEADER
SKIPN PTHBLK+.PTPPN+2(W1) ;NEXT SFD THERE?
JRST HEAD3 ;NO,FINISH UP
AOJA W1,PRTPLP ;ELSE LOOP FOR NEXT SFD
;HERE FOR BINARY COMPARE
BINCOM: TLNE FR,EOF2SW ;NO HEADER IF ONLY ONE FILE
TLZ FR,PAGSW ;FAKE AS NOT NEW PAGE
;SORT OUT CONFLICTING SWITCHES AND EXTENSIONS
TLNE FR,WSWBIT ;EXPLICIT /W?
TLZ FR,XSWBIT!XDFBIT!EXEBIT ;[56] YES, THEN DON'T EXPAND
TLNE FR,XSWBIT ;EXPLICIT /X?
TLZ FR,HSGBIT!WDFBIT ;YES
TLC FR,XDFBIT!HSGBIT ;MUTUALLY EXCLUSIVE BITS
TLCN FR,XDFBIT!HSGBIT ;THERFORE THEY BETTER NOT BE BOTH ON
TLZ FR,XDFBIT!HSGBIT ;THEY WERE , YOU LOSE
TLNE FR,HSGBIT!WDFBIT ;WAS ONE FILE NOT IN SAV FORMAT?
TLZ FR,XDFBIT ;THEN IGNORE OTHER EXT
TLNE FR,XDFBIT!WDFBIT ;WAS ONE FILE NOT A HIGH SEGMENT
TLZ FR,HSGBIT ;YES, THEN IGNORE ONE THAT WAS
;END OF THIS MESS
TLNN FR,HSGBIT ;TEST FOR EXT OF SHR, OR HGH
TDZA CNT,CNT ;NO, START AT 0
MOVEI CNT,400000 ;YES, START AT HIGH SEG ADDRESS
TLNN FR,XSWBIT!XDFBIT;NEED TO EXPAND?
JRST COMP1 ;NO
JRST SAV1 ;YES
READ1A: TRZ FR,-1 ;INDEX BY 0 FOR FILE 1
JSP C,GCHAR1
READ1: SOSGE INBUF1+2
JRST READ1A ;BUFFER EMPTY
ILDB W1,INBUF1+1
AOS (PP)
POPJ PP,
READ2A: HRRI FR,1 ;INDEX BY 1 FOR FILE 2
TLNE FR,EOF2SW ;PREMATURE EOF
JRST ZPOPJ ;YES, AVOID I/O ERROR
JSP C,GCHAR2
READ2: SOSGE INBUF2+2
JRST READ2A ;BUFFER EMPTY
ILDB W2,INBUF2+1
AOSA (PP)
ZPOPJ: SETZ W2, ;RETURN NUL CHARS.
POPJ PP,
COMP1: TLNE FR,EXEBIT ;EXE FILE? [25]
JRST EXSTUF ;YES. GO ELSEWHERE [25]
PUSHJ PP,READ1 ;GET WORD FROM FIRST FILE
JRST COMP10 ;HERE IF A READ FAILURE
PUSHJ PP,READ2 ;NOW GET WORD FROM SECOND FILE
JRST COMP12 ;HERE IF READ FAILURE
CAME W1,W2 ;THIS IS THE BIG TEST
PUSHJ PP,COMP2 ;IT FAILED--THERE IS A DIFFERENCE
AOS CNT ;[57] NO DIFFERENCE, BUMP COUNT
CAMLE CNT,UPPER ;[57] HAVE WE FINISHED?
JRST FIN2 ;[57] YES, EXIT QUICKLY
JRST COMP1 ;[57] NO, TRY AGAIN
COMP2: CAMGE CNT,LOWER ;[22] IS LINE NUMBER IN BOUNDS?
POPJ PP, ;NO,TRY NEXT ONE
CAMLE CNT,UPPER ;[22] HAVE WE FINISHED?
JRST FIN2 ;YES,SO EXIT QUICKLY
SETZ DIG ;[63] INITIALIZE
HLLZ T,CNT ;[63] MOVE LH OF CNT TO T
JUMPN T,COMP14 ;[63] JUMP IF RH IS NON-ZERO
HRLZ T,CNT ;GET LINE NUMBER FOR PRINT OUT
COMP2A: PUSHJ PP,TYCELL ;[63] GO PRINT IT
AOS ERRCNT ;BUMP ERROR COUNT
MOVE T,1 ;NO GET WORD FROM FIRST FILE
PUSHJ PP,TYPB ;PRINT IT WITH SPACES BETWEEN HALF WORDS
MOVE T,2 ;NOW WORD FROM SECOND FILE
TLNE FR,EXEBIT ;[27] IS THIS AN EXE FILE?
TLNN FR,EOF2SW ;[27] YES, IS THERE A 2ND FILE?
SKIPA ;NO TO EITHER
JRST TCRLF ;[27] YES JUST PRINT CRLF
PUSHJ PP,TYPB ;AND PRINT IT
MOVE T,1 ;NOW "OR" THE WORDS
XOR T,2
TLNN T,-1 ;IF ONLY ADDRESS FIELD IS DIFFERENT
JRST COMP3 ;HANDLE IT DIFFERENTLY
PUSHJ PP,TYPB ;NOW PRINT OUT THE "OR"ED WORD
JRST TCRLF ;OUTPUT A CARRIAGE RETURN-LINE FEED
COMP3: MOVE T,W1
SUB T,W2 ;SUBTRACT ADDRESSES
JUMPGE T,.+2
MOVNS T
MOVSS T ;PUT IN LEFT HALF
PUSHJ PP,TYPTAB ;TYPE A TAB
MOVEI W1,7 ;NEED 7 SPACES FOR ALLIGNMENT
PUSHJ PP,TYPSP ;TYPE A SPACE
SOJG W1,.-1 ;LOOP
PUSHJ PP,TYCELL ;AND ADDRESS
JRST TCRLF ;AND CONTINUE
COMP10: CAMG CNT,UPPER ;[22] OUT OF BOUNDS?
PUSHJ PP,RDFIL2 ;READ WORD FROM FILE 2 (REG OR EXE)
JRST FIN2
CAMGE CNT,LOWER ;[22]
AOJA CNT,COMP10 ;GET NEXT WORD
PUSHJ PP,TYCNT ;TYPE LINE COUNT
PUSHJ PP,TYPTB2 ;TWO TABS
MOVE T,W2
PUSHJ PP,TYPB
PUSHJ PP,TCRLF
AOJA CNT,COMP10
COMP12: CAMGE CNT,LOWER ;[22]
JRST COMP13
PUSHJ PP,TYCNT
MOVE T,W1
PUSHJ PP,TYPB
PUSHJ PP,TCRLF
CAMGE CNT,UPPER ;[22]
COMP13: PUSHJ PP,RDFIL1
JRST FIN2
AOJA CNT,COMP12
;COME HERE ONLY IF WE HAVE ADDRESS GREATER THAN 777777
;VERY FIRST TIME WHEN WE SEE FULL WORD ADDRESS WE ALSO JUMP TO NEW
;PAGE FOR READABILITY
;
COMP14: SKIPN FWA1ST ;[63] FULLWORD ADDRESS SEEN FIRST TIME?
TLO FR,PAGSW ;[63] THIS MEANS WE GET A NEW HEADING
SETOM FWA1ST ;[63] SET IT ONE FOR NEXT CHECK
MOVEI T,14 ;[63] NUMBER OF DIGITS FOR THE FULL WORD
MOVEM T,DIG ;[63] SAVE IT FOR LATER USE
MOVE T,CNT ;[63] GET FULL WORD LINE NUMBER
JRST COMP2A ;[63] JUMP BACK TO TYPE
;COME HERE IF WE ARE COMPARING TWO EXE FILES. THIS OPERATION
; IS SOMEWHAT SIMILAR TO COMPARING TWO BINARY
; FILES EXCEPT THAT WE MUST ALSO CYLE THRU THE FILE DIRECTORY
; AS WE GO.
;
;FIRST, WE MUST READ IN THE DIRECTORY AND STORE IT SOMEPLACE.
EXSTUF: TRZ FR,-1 ;SET FILE 1
EXSTF2: PUSHJ PP,EXERED ;READ THE FIRST WORD OF EXE FILE
SETZM DIRCTR ;CLEAR COUNTER OF DIRECTORY LENGTH
HLRZ T,W1 ;GET LEFT HALF OF IT
CAIE T,.SVDIR ;[100] IS THIS A PROPER EXE FILE?
JRST EXERR0 ;NO, GO PRINT APPROPRIATE ERROR MSG
TLZ W1,-1 ;CLEAR HEADER CODE AND LEAVE LENGTH
ADDM W1,DIRCTR ;BUMP COUNTER
SOS W1 ;=LENGTH OF DATA IN DIRECTORY
MOVEM W1,@[EXP DLNG1,DLNG2](FR) ;STORE LENGTH
HRRZ TT,.JBFF## ;GET TOP OF FREE SPACE
MOVEM TT,@[EXP DPTR1,DPTR2](FR) ;SET DIRECTORY POINTER
ADDB W1,.JBFF## ;=TOP OF NEW LOW SEGMENT
CAMG W1,.JBREL## ;IS THERE ENOUGH ROOM ALREADY?
JRST .+3 ;YES
CORE W1, ;NO, GET MORE CORE TO HOLD DIRECTORY
JRST CORERR ;NOT ENOUGH CORE, FATAL ERROR
HRRZ T,.JBFF## ;GET START OF FREE SPACE
SUB T,@[EXP DLNG1,DLNG2](FR)
HRRZ TT,@[EXP DLNG1,DLNG2](FR) ;GET LENGTH OF DIR
PUSHJ PP,EXERED ;READ A WORD FROM DIRECTORY
MOVEM W1,(T) ;STORE WORD IN FREE CORE
AOS T ;BUMP POINTER
SOJG TT,.-3 ;LOOP UNTIL MOVED ENTIRE DIRECTORY
GETBLK: PUSHJ PP,EXERED ;GET NEXT WORD IN FILE
HLRE T,W1 ;..AND ITS HEADER CODE
JUMPL T,EXERR0 ;MUST BE POSITIVE
CAIN T,.SVEND ;[100] END BLOCK?
JRST GOTEND ;YES
TLZ W1,-1 ;ISOLATE LENGTH
ADDM W1,DIRCTR ;BUMP TOTAL LENGTH
SOJE W1,GETBLK ;[56] WE HAVE READ ONE WORD ALREADY
MOVE T,W1 ;[56] PUT COUNT IN AC THAT IS SAFE
PUSHJ PP,EXERED ;SKIP OVER IT
SOJG T,.-1 ;[56]
JRST GETBLK ;GET NEXT BLOCK
GOTEND: TLZ W1,-1 ;JUST IN CASE END-BLOCK INCREASES
; IN THE FUTURE, ADD ITS LENGTH IN
ADDM W1,DIRCTR
HRRZ T,DIRCTR ;GET AMOUNT TO SKIP OVER
IDIVI T,^D512 ;=# OF PAGES IN DIRECTORY
MOVEI T,^D512 ;TT NOW HOLDS REMAINDER, WHICH IS
; THE OFFSET INTO THE LAST PAGE
; OF THE DIRECTORY
SUB T,TT ;=FREE SPACE ON LAST PAGE OF DIRECTORY
PUSHJ PP,@[EXP READ1,READ2](FR) ;PASS OVER DIRECTORY
JRST EXERR0 ;
SOJG T,.-2 ;LOOP UNTIL 1ST DATA PAGE IS IN
tlne fr,eof2sw ;2nd file ? [27]
jrst got2 ;no [27]
TRNN FR,-1 ;ARE WE READING IN FILE 1?
AOJA FR,EXSTF2 ;YES, BUMP TO FILE 2 AND READ IT IN
;FALL THRU TO NEXT PAGE WHEN BOTH DIRECTORIES ARE READ IN
;WE MUST NOW SET UP THE CORRECT POINTERS AND COUNTERS FOR EACH
; DIRECTORY.
GOT2: TRZ FR,-1 ;SET FILE 1
PUSHJ PP,MKNTRY ;SET UP AN IOWD FOR 1ST DIRECTORY ENTRY
MOVE S1,T ;RETURN WITH IOWD IN T
TLNE FR,EOF2SW ;[27] 2ND FILE?
JRST [HRLOI S2,377777 ;[60] NO, SET S2 HIGH
JRST EXLOOP] ;[60] DO COMPARISON
AOS FR ;SET FILE 2
PUSHJ PP,MKNTRY ;SET UP IOWD FOR 1ST ENTRY HERE ALSO
MOVE S2,T ;SAVE IT IN S2
;HERE IS THE MAIN COMPARISON LOOP:
EXLOOP: PUSHJ PP,SETCNT ;[60] MOVE UP CNT IF POSSIBLE
PUSHJ PP,EXRED1 ;READ A WORD FROM FILE1
JRST [HRLOI S1,377777 ;[54] MAKE S1 TO BE VERY HIGH NUMBER SO
JRST COMP10] ; SO S2 WILL CONTINUE TO PRINT
PUSHJ PP,EXRED2 ;READ WORD FROM FILE2
JRST [HRLOI S2,377777 ;[54] SAME FOR S2
JRST COMP12]
CAIG CNT,132 ;[113]
CAIN CNT,41 ;[113]
JRST EXLOO1 ;[113] COMPARE LOCS 41 AND GREATER THAN 132
CAIN CNT,44 ;[113]
JRST EXLOO1 ;[113] COMPARE LOC 44
CAIGE CNT,74 ;[113]
AOJA CNT,EXLOOP ;[113] DON'T COMPARE LOCS 0-40 AND 42-73 SANS 44
CAIG CNT,76 ;[113]
JRST EXLOO1 ;[113] COMPARE LOCS 74-76
CAIE CNT,132 ;[113]
CAIG CNT,111 ;[113]
AOJA CNT,EXLOOP ;[113] DON'T COMPARE LOCS 77-111, 132
CAIE CNT,113 ;[113]
CAIN CNT,114 ;[113]
AOJA CNT,EXLOOP ;[113] DON'T COMPARE LOCS 113 AND 114
;[113] HERE TO COMPARE LOCS 112, 115-131
EXLOO1: TLNN FR,EOF2SW ;DON'T COMPARE IF ONLY 1 FILE [27]
CAME W1,W2 ;HERE IT IS!!!!!!!
PUSHJ PP,COMP2 ;NO MATCH, PRINT LINE
AOS CNT ;[57] BUMP ADDRESS
CAMLE CNT,UPPER ;[57] HAVE WE FINISHED?
JRST FIN2 ;[57] YES, EXIT QUICKLY
JRST EXLOOP ;[57] NO, TRY AGAIN
;Subroutine to form pointers from the current directory entry
;
;Call:
; PUSHJ PP,MKNTRY
; Return here always
;
;On return, T will contain the address for the next word in
;the file. EX1CNT or EX2CNT, as appropriate, will contain the
;negative of the number of words covered by this directory
;entry.
;
MKNTRY: MOVE TT,@[EXP DPTR1,DPTR2](FR) ;GET DIRECTORY POINTER
LDB T,[POINT 9,1(TT),8] ;GET REPEAT COUNT OF THIS ENTRY
AOS T ;=# OF PAGES IN THIS ENTRY
IMUL T,[-^D512] ;[43] =# OF WORDS IN THIS ENTRY
MOVEM T,@[EXP EX1CNT,EX2CNT](FR) ;[43] Store away
HRRZ T,1(TT) ;[43] GET PROCESS PAGE #
LSH T,9 ;[43] MAKE INTO AN ADDRESS
MOVEI TT,40 ;ASSUME THIS IS THE LOW SEG
TRNN T,-1 ;IF THIS IS USER VIRTUAL PAGE 0
PUSHJ PP,SKPEXE ;SKIP UP TO LOC 41
POPJ PP, ;RETURN WITH ANSWER IN T
;SUBROUTINE TO READ ONE WORD FROM AN EXE FILE
;CALL:
; PUSHJ PP,EXRED1
; HERE IF EOF
; HERE WITH WORD IN W1
;
EXRED1: SETZ W1, ;CLEAR WORD WHERE IT IS TO GO
CAMGE CNT,S1 ;[54] DO THE FILE COUNTS MATCH UP?
JRST CPOPJ1 ;NO, THIS FILE IS AHEAD OF THE
; OTHER ONE, SO EXIT AS IF THE NEXT
; WORD WERE A ZERO
AOSG EX1CNT ;[43],[60] Bump word count
JRST EXRD1A ;[43] Go get it
MOVEI T,2 ;IF WE DIDN'T JUMP, THEN WE HAVE
; EXHAUSTED THE CURRENT DIRECTORY ENTRY
; AND WE MUST GET ANOUTHER ONE
ADDM T,DPTR1 ;BUMP DIRECTORY POINTER BY 2
TRZ FR,-1 ;SET FILE 1
SOS DLNG1 ;DECREMENT LENGTH
SOSG DLNG1 ;..IS THERE MORE IN THE DIRECTORY?
POPJ PP, ;NO, EXIT WITH ZERO
PUSHJ PP,MKNTRY ;MAKE A NEW IOWD FROM THIS DIRECT ENTRY
MOVE S1,T ;RESET S1
TLNE FR,EOF2SW ;[60] IS THERE A SECOND FILE?
PUSHJ PP,SETCNT ;[60] NO, SAFE TO RESET COUNT
CAME CNT,S1 ;[60] HAVE WE JUMPED AHEAD OF FILE 2?
JRST CPOPJ1 ;[60] YES, RETURN A ZERO
AOS EX1CNT ;[67] COUNT THE WORD WE ARE ABOUT TO READ
EXRD1A: AOJ S1, ;[60] BUMP ADDRESS
HRRZ T,@DPTR1 ;GET CURRENT FILE PAGE #
JUMPE T,CPOPJ1 ;IF ALLOCATED-BUT-ZERO, PRETEND THIS
; IS A ZERO WORD
JRST READ1 ;GO READ A WORD FROM FILE
;SUBROUTINE TO READ A WORD FROM EXE FILE #2
;
;CALLING CONVENTIONS SAME AS EXRED1
;
EXRED2: SETZ W2, ;CLEAR WORD
CAMGE CNT,S2 ;[54] DO ADDRESSES MATCH?
JRST CPOPJ1 ;NO, EXIT WITH 0
AOSG EX2CNT ;[43],[60] Bump word count
JRST EXRD2A ;[43] Go get it
MOVEI T,2 ;DIRECTORY ENTRY IS THRU...
ADDM T,DPTR2 ;...MAKE A NEW ONE
HRRI FR,1 ;SET FILE 2
SOS DLNG2 ;DECREMENT LENGTH
SOSG DLNG2 ;MORE DIRECTORY ENTRIES?
POPJ PP, ;NO
PUSHJ PP,MKNTRY ;MAKE A NEW IOWD
MOVE S2,T ;SAVE IT IN S2
TLNE FR,EOF1SW ;[60] IS THERE A FIRST FILE?
PUSHJ PP,SETCNT ;[60] NO, SAFE TO RESET COUNT
CAME CNT,S2 ;[54],[60] DID WE JUST LEAP AHEAD OF FILE 1?
JRST CPOPJ1 ;YES,DEFER READ UNTIL FILE 1 CATCHES UP
AOS EX2CNT ;[67] COUNT THE WORD WE ARE ABOUT TO READ
EXRD2A: AOJ S2, ;[60] BUMP ADDRESS
HRRZ T,@DPTR2 ;GET FILE PAGE #
JUMPE T,CPOPJ1 ;IF ABZ, XIT WITH ZERO
JRST READ2 ;GET A WORD FROM FILE 2
;SUBROUTINE TO READ A WORD FROM EITHER A REGULAR BINARY FILE
; OR AN EXE FILE. THIS ROUTINE IS CALLED ONLY ON EOF FROM
; ONE OF THE FILES.
;
RDFIL1: TLNN FR,EXEBIT ;IS THIS AN EXE FILE?
JRST READ1 ;NO, REGULAR READ
JRST EXRED1 ;YES, EXE READ
RDFIL2: TLNN FR,EXEBIT ;EXE FILE?
JRST READ2 ;NO
JRST EXRED2 ;YES
;SUBROUTINE TO READ ONE WORD FROM EITHER
; EXE FILE
;
;CALL:
; PUSHJ PP,EXERED
; RETURN HERE IF EOF (ERROR IF SO)
; HERE WITH WORD IN W1
EXERED: SETZB W1,W2 ;CLEAR BOTH
PUSHJ PP,@[EXP READ1,READ2](FR) ;READ A WORD
JRST EXERR0 ;BAD FORMAT (PREMATURE EOF)
SKIPN W1 ;DID IT COME FROM FILE 1?
MOVE W1,W2 ;NO, MOVE WORD TO W1
POPJ PP, ;RETURN
;SUBROUTINE TO SKIP OVER PART OF AN EXE FILE
;
;CALL:
; MOVE T,CURRENT-IOWD-POINTER
; MOVEI TT,# OF LOCS TO SKIP
; PUSHJ PP,SKPEXE
; RETURN HERE ALWAYS
;
SKPEXE: PUSHJ PP,@[EXP READ1,READ2](FR)
JRST EXERR0 ;ERROR
AOSLE @[EXP EX1CNT,EX2CNT](FR) ;[43]
JRST EXERR0 ;[43] Should not occur
AOJ T, ;[43]
SOJG TT,SKPEXE ;[43] LOOP
POPJ PP, ;RETURN
;ROUTINE TO SET CNT TO LOWER OF S1,S2
;
SETCNT: MOVE CNT,S1 ;[54] ASSUME IT'S S1
CAMLE CNT,S2 ;[54] IS IT?
MOVE CNT,S2 ;[54] NO
POPJ PP,
;THIS CODE EXPANDS SAV FILES BEFORE COMPARING THEM
READ1X: PUSHJ PP,READ1 ;GET A WORD
JRST SAV9 ;[32] EOF SEEN
MOVE S1,W1 ;STORE AOBJN WORD
JUMPGE W1,SAVER1 ;NOT SAV FORMAT
MOVEI CNT,1(S1) ;JUST INCASE NO 2ND FILE
POPJ PP,
READ2X: PUSHJ PP,READ2 ;SAME FOR SECOND WORD
JRST SAV19 ;[32]
MOVE S2,W2
JUMPGE W2,SAVER2
POPJ PP,
SAV1: SETZB S1,S2
READX1: PUSHJ PP,READ1X
JUMPL S2,SAV2
READX2: PUSHJ PP,READ2X
SAV2: MOVEI CNT,1(S1) ;GET FIRST LOCATION
CAILE CNT,1(S2) ;IS IT SMALLER OF THE TWO?
MOVEI CNT,1(S2) ;NO,SO USE S2
SAV3: SETZB W1,W2
CAIE CNT,1(S1) ;DO WE WANT THIS WORD
JRST .+4 ;NO
AOBJN S1,.+1
PUSHJ PP,READ1
JRST SAV9 ;[32]
CAIE CNT,1(S2)
JRST .+4
AOBJN S2,.+1
PUSHJ PP,READ2
JRST SAV19 ;[32]
CAME W1,W2
PUSHJ PP,COMP2
JUMPGE S1,READX1 ;GET ANOTHER AOBJN WORD
JUMPGE S2,READX2
AOS CNT ;[57] BUMP ADDRESS
CAMLE CNT,UPPER ;[57] HAVE WE FINISHED?
JRST FIN2 ;[57] YES, EXIT QUICKLY
JRST SAV3 ;[57] NO, TRY AGAIN
SAVER1: HLRZS S1
XORI S1,(JRST)
TRNN S1,777000 ;TEST FOR TRANSFER WORD
JRST SAV9 ;[32]
JSP T,ERROUT
ASCIZ /?File 1 not in SAV format/
SAVER2: HLRZS S2
XORI S2,(JRST)
TRNN S2,777000
JRST SAV19 ;[32]
JSP T,ERROUT
ASCIZ /?File 2 not in SAV format/
SAV14: HLRZ S1,W2
XORI S1,(JRST)
TRNN S1,777000
JRST FIN2
MOVE S2,W2
SAV9: MOVEI CNT,1(S2) ;[32]
SAV10: CAMG CNT,UPPER ;[22]
PUSHJ PP,READ2
JRST FIN2
JUMPGE S2,SAV14
CAMGE CNT,LOWER ;[22]
JRST SAV10A
PUSHJ PP,TYCNT
PUSHJ PP,TYPTB2
MOVE T,W2
PUSHJ PP,TYPB
PUSHJ PP,TCRLF
SAV10A: AOBJN S2,.+1
AOJA CNT,SAV10
SAV24: HLRZ S2,W1
XORI S2,(JRST)
TRNN S2,777000
JRST FIN2
MOVE S1,W1
SAV19: MOVEI CNT,1(S1) ;[32]
SAV20: CAMG CNT,UPPER ;[22]
PUSHJ PP,READ1
JRST FIN2
JUMPGE S1,SAV24
CAMGE CNT,LOWER ;[22]
JRST SAV20A
PUSHJ PP,TYCNT
MOVE T,W1
PUSHJ PP,TYPB
PUSHJ PP,TCRLF
SAV20A: AOBJN S1,.+1
AOJA CNT,SAV20
;ERROR MESSAGES FOR EXE FILE PROCESSING
;
;
;COME HERE IF EITHER FILE WAS NOT A EXE FILE
EXERR0: TRNE FR,-1 ;WAS IT FILE 1?
JRST EXERR2 ;NO
JSP T,ERROUT ;YES
ASCIZ /?File 1 not in correct EXE format/
;HERE IF FILE 2 IS BAD
EXERR2: JSP T,ERROUT
ASCIZ /?File 2 not in correct EXE format/
;HERE IF CAN'T READ DIRECTORY
CORERR: JSP T,ERROUT
ASCIZ /?Not enough core available to hold directory/
SYMPTR: POINT 7,LSTSYM+SYMBOL ;[76] [104] POINTER TO LAST SYMBOL
DOLPTR: POINT 7,LSTSYM+$SYMBL ;[76] [104] POINTER TO LAST LOCAL SYMBOL
RELOC ;IMPURE AREA
PPSET: BLOCK LPDL ;PUSH DOWN LIST STORAGE
CTIBUF: BLOCK 3
CTOBUF: BLOCK 3
INBUF1: BLOCK 3
INBUF2: BLOCK 3
ERRCNT: BLOCK 1 ;DIFFERENCES COUNTER (0 MEANS NO DIFFERENCES)
DIFFLG: BLOCK 1 ;"DIFFERENCE IN PROGRESS" FLAG (0 MEANS NO DIFF)
INDEV1: BLOCK 1
INDIR1: BLOCK 4+3+MAXSFD+1
INDPPN: BLOCK 1 ;HOLD PROJECT,PROGRAMMER #
PTHBLK: BLOCK MAXSFD+4 ;SFDS,OVERHEAD AND 0 DELIMITER WORD
OUTDEV: BLOCK 1 ;OUTPUT DEVICE
OUTEXT: BLOCK 1 ;FLAG FOR EXTENSION SEEN ON OUTPUT
OUTDIR: BLOCK 4+3+MAXSFD+1
FILCNT: BLOCK 1 ;COUNT OF CURRENT FILE
TOP: ;CONTAINS # LINES ACTUALLY STORED IN BUFFER FOR:
TOP1: BLOCK 1 ;FILE #1
TOP2: BLOCK 1 ;FILE #2
LBUFP:
LBUFP1: BLOCK 1 ;POINTER TO BEGINNING OF LINE STORAGE FOR FILE #1
LBUFP2: BLOCK 1 ;DITTO FILE #2
CRSEEN: BLOCK 2 ;[44] DECIDE WHAT TO DO WITH CR'S
OLDCHR: BLOCK 2 ;[44] HOLDS THE CHAR AFTER THE CR
P1: BLOCK 1 ;BYTE POINTERS USED BY "COMPL" SUBROUTINE
P2: BLOCK 1
HPOINT: BLOCK 1 ;HOLD BYTE POINTER FOR CREATING HEADERS
; *** KEEP THE NEXT 4 BLOCKS IN ORDER ***
HBUF1: BLOCK ^D14 ;[51] HOLDS HEADER FOR FIRST FILE
HBUF1D: BLOCK ^D6 ;[51] ITS CREATION DATE
HBUF2: BLOCK ^D14 ;[51] FOR SECOND FILE
HBUF2D: BLOCK ^D6 ;[51] ITS CREATION DATE
;-- END OF SPECIAL ORDER --
HBPT1: BLOCK 1 ;[51] POINTER TO END OF HBUF1
HBPT2: BLOCK 1 ;[51] POINTER TO END OF HBUF2
PAGNUM: BLOCK 2 ;PAGE NUMBERS FOR THE TWO FILES
; LH(# AT BEGIN OF LINE), RH(# AFTER LAST CHAR)
PAGEN: BLOCK 1 ;TEMPORARY FOR PAGE #'S IN PLINEN SUBROUTINE
OLDNUM: BLOCK 2 ;LAST LINE # USED IN "SETONE"
OLDPNT: BLOCK 2 ;LAST BYTE POINTER CALCULATED BY "SETONE"
SAVEXS: BLOCK 17 ;STORAGE FOR AC'S WHEN PRINTING PAGE HEADERS
TEMP: BLOCK 1
LINCNT: BLOCK 1
RTNTMP: BLOCK 1 ;RETURN ADDRESS FOR "MULTI" SUBROUTINE
WCADR: BLOCK 1 ;TEMP IN GLINE SUBROUTINE
HIGH: BLOCK 1 ;USED BY NOROOM
ROOM: BLOCK 1 ;USED BY "NOROOM"
GETCNT: BLOCK 1 ;# LINES (-1) "GETTWO" GOT
GETFIL: BLOCK 1 ;# OF FILE FROM WHICH "GETTWO" GOT LINE (.L. 0 IF NONE)
NUMLIN: BLOCK 1 ;# LINES FOR A MATCH
NUMTMP: BLOCK 1 ;TEMP FOR NUMLIN
USERL: BLOCK 1 ;WRITE-ONCE COPY OF NUMLIN
TEMPF1: BLOCK 1 ;TEMP FOR F1
TEMPF2: BLOCK 1 ;TEMP FOR F2
EXTFL1: BLOCK 1 ;DEFAULT FLAGS FROM EXT OF FILE 1
EXTFL2: BLOCK 1 ;DITTO FOR FILE 2
LSEEN: BLOCK 1 ;[21] -1 IF /0000L SEEN
USWFLG: BLOCK 1 ;[34] -1 if /U but not /L
TNMLIN: BLOCK 1 ;[34] Temporary NUMLIN
QSW: BLOCK 1 ;-1 IF /Q SEEN
FWA1ST: BLOCK 1 ;[63] 0 MEANS SAW FULL WORD ADDRESS 1ST TIME
DIG: BLOCK 1 ;[63] NUMBER OF DIGITS
XITFLG: BLOCK 1 ;[45] -1 IF WE EXIT AFTER COMMAND
;EXE FILE TEMPS
DIRCTR: BLOCK 1 ;TOTAL LENGTH OF ENTIRE DIRECTORY
DPTR1: BLOCK 1 ;POINTER TO DIRECTORY FOR FILE 1
DPTR2: BLOCK 1 ;SAME FOR FILE 2
DLNG1: BLOCK 1 ;COUNTER FOR DIRECTORY LENGTH OF FILE 1
DLNG2: BLOCK 1 ;SAME FOR FILE 2
EX1CNT: BLOCK 1 ;[43] Word count for file 1 directory entry
EX2CNT: BLOCK 1 ;[43] Same for file 2
;END OF EXE TEMPS
OFSSWT: BLOCK 1 ;[76] SET IF LABEL OFFSETS WANTED
OPTSWT: BLOCK 1 ;[105] /T (KEEP OUTPUT FILE) SPECIFIED
OPISWT: BLOCK 1 ;[117] /I (IGNORE CASE) SPECIFIED
LSTSYM: PHASE 0 ;[104] LAST SYMBOL SEEN IN INPUT BASE FILE
SYMBOL: BLOCK 2 ;[76] LAST SYMBOL SEEN IN FILE 1
$SYMBL: BLOCK 2 ;[76] LAST LOCAL SYMBOL SEEN IN FILE 1
SYMLIN: BLOCK 1 ;[76] NUMBER OF LINES SEEN SINCE LAST SYMBOL
SSBLTE==.-SYMBOL ;[76] LENGTH FOR BLT'S
DEPHASE
SAVSYM: BLOCK SSBLTE ;[104]
NOHDR: BLOCK 1 ;[76] -1 IF UNEQUAL LENGTH FILES, PRINTED *******
PSYMB: BLOCK 2 ;[76] COPY OF SYMBOL WHILE SEEING IF IT IS ONE
VAR ;JUST IN CASE
ENDP:
RELOC ;DUMP LITS IN HIGH SEGMENT
END FILCOM