2000 REM ...... THIS IS FILE "RESEQ2.BAS"
2010
2020 !----------------------------------------------------!
2030 ! PROGRAM TO RESEQUENCE ALPHABASIC SOURCE PROGRAMS !
2035 ! BY MANUAL STEP-THROUGH (ASSUMES LABELS USED) !
2040 !----------------------------------------------------!
2050
2060 REM ...... STRING DEFINTIONS
2070 MAP1 TEXT$ ,S,100
2080 MAP1 COMD$ ,S,1
2090 MAP1 SLINE$ ,S,10
2100 MAP1 CHAR$ ,S,1
2120 MAP1 SHARP$ ,S,1,"#"
2130 MAP1 NLINE$,S,10
2140 MAP1 FNAME1$,S,15
2150 MAP1 FNAME2$,S,15
2160
2170 NEW'FILE:
2180 PRINT TAB(-1,0);
2190 PRINT "ENTER INPUT (CURRENT) FILE NAME : < >";
2200 FOR I=1 TO 11 : PRINT CHR(8); : NEXT I
2210 INPUT "" FNAME1$
2220 PRINT "ENTER OUTPUT (NEW) FILE NAME : < >";
2230 FOR I=1 TO 11 : PRINT CHR(8); : NEXT I
2240 INPUT "" FNAME2$
2250
2260 REM ...... OPEN FILES
2270 LOOKUP FNAME1$, THERE
2280 IF(THERE=0) THEN PRINT "ERROR---INPUT FILE NOT FOUND" : GO TO END
2290 OPEN #1, FNAME1$, INPUT
2300 LOOKUP FNAME2$, THERE
2310 IF(THERE <> 0) THEN ? "ERROR---OUTPUT FILE EXISTS !" : GO TO END
2320 OPEN #2, FNAME2$, OUTPUT
2330
2340 REM ...... SET INITIAL CONDITIONS
2350 XLINE=0
2360 INCR=10
2370 PRINT
2380 PRINT
2390
2400
2410
2420 NEXT'LINE:
2430 INPUT LINE #1, TEXT$
2440 IF(EOF(1)=1) THEN GO TO END'OF'FILE
2450 SLINE$=""
2460
2470 NEXT'DIGIT:
2480 CHAR$=LEFT$(TEXT$,1)
2490 IF(CHAR$ < "0" OR CHAR$ > "9") THEN GO TO INPUT'LINE'NUMBER
2500 SLINE$=SLINE$+CHAR$
2510 L=LEN(TEXT$)
2520 TEXT$=RIGHT$(TEXT$,L-1)
2530 GO TO NEXT'DIGIT
2540
2550 INPUT'LINE'NUMBER:
2560 PRINT SLINE$+TEXT$
2570 PRINT
2580 YLINE=XLINE+INCR
2590 PRINT USING "NEW ! : <#####>", SHARP$, YLINE;
2600 FOR I=1 TO 6 : PRINT CHR(8); : NEXT I
2610 INPUT "" YLINE
2620 IF(YLINE > XLINE) THEN GO TO RESEQUENCE
2630 PRINT "ERROR---LINE #"; YLINE; "OUT OF SEQUENCE"
2640 PRINT TAB(-1,3); TAB(-1,3); TAB(-1,3); TAB(-1,3);
2650 GO TO INPUT'LINE'NUMBER
2660
2670 RESEQUENCE:
2680 INCR=YLINE-XLINE
2690 XLINE=YLINE
2700
2710 REM ...... WRITE RE-NUMBERED LINE TO OUTPUT FILE
2720 NLINE$=STR$(XLINE)
2730 PRINT #2, NLINE$+TEXT$
2740
2750 REM ...... UPDATE SCREEN
2760 PRINT TAB(-1,3); TAB(-1,3); TAB(-1,3); NLINE$;
2770 IF(LEN(NLINE$) <> LEN(SLINE$)) THEN PRINT TAB(-1,9); TEXT$;
2780 PRINT
2790 PRINT TAB(-1,10);
2800 GO TO NEXT'LINE
2810
2820
2830
2840
2850 END'OF'FILE:
2860 CLOSE #1
2870 CLOSE #2
2880 PRINT
2890 PRINT "[END OF SOURCE TEXT]"
2900 PRINT
2910
2920 REM ...... AGAIN ?
2930 COMD$="N"
2940 INPUT "DO YOU WANT TO RENUMBER ANOTHER FILE ('Y' OR 'N') : ", COMD$
2950 IF(COMD$="Y") THEN GO TO NEW'FILE
2960
2970 END:
2980 END
