1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
|
(******************************************************************************)
(* Copyright (c) 1988 by GMD Karlruhe, Germany *)
(* Gesellschaft fuer Mathematik und Datenverarbeitung *)
(* (German National Research Center for Computer Science) *)
(* Forschungsstelle fuer Programmstrukturen an Universitaet Karlsruhe *)
(* All rights reserved. *)
(******************************************************************************)
MODULE Lister;
FROM Arguments IMPORT ArgTable, GetArgs;
FROM ByteIO IMPORT
File, GetByte, PutByte,
OpenInput, OpenOutput, Close, EOF, Done;
FROM InOut IMPORT WriteString, WriteLn;
FROM Strings IMPORT Assign, Append;
CONST
errtabmax = 500;
stringtabmax = 20000;
MaxFilenameLength = 1024;
VAR
ErrorFile: File;
stringtab: ARRAY [1..stringtabmax] OF CHAR;
stringtablast: SHORTCARD;
errtab: ARRAY [0..errtabmax] OF RECORD line, col, pos: SHORTCARD END;
errtablast: SHORTCARD;
PROCEDURE ReadMsgs;
VAR line, col: SHORTCARD; ch: CHAR;
PROCEDURE EnterMsg (line, col, pos: SHORTCARD);
VAR i, k: SHORTCARD;
BEGIN
(* there is always at least one (dummy) entry *)
i := errtablast;
WHILE (errtab[i].line > line) OR
((errtab[i].line = line) AND (errtab[i].col > col))
DO
DEC(i);
END;
(* insert after pos 'i' *)
FOR k := errtablast TO i+1 BY -1 DO
errtab[k+1] := errtab[k]
END;
errtab[i+1].line := line;
errtab[i+1].col := col;
errtab[i+1].pos := pos;
INC (errtablast);
END EnterMsg;
PROCEDURE GetDecimal (VAR n: SHORTCARD);
VAR ch: CHAR;
BEGIN
n := 0;
LOOP
GetByte(ErrorFile, ch);
IF EOF(ErrorFile) THEN
EXIT
END;
IF (ch < '0') OR (ch > '9') THEN
EXIT
END;
n := n * 10 + (ORD(ch) - ORD('0'));
END;
IF n = 0 THEN n := 1 END;
(* n = 0 is an illegal number for lin/col information *)
END GetDecimal;
BEGIN
LOOP
IF (errtablast = errtabmax) OR (stringtablast+100 > stringtabmax) THEN
EXIT
END;
GetDecimal(line);
IF EOF(ErrorFile) THEN EXIT END;
GetDecimal(col);
EnterMsg (line, col, stringtablast+1);
LOOP
GetByte(ErrorFile, ch);
INC(stringtablast);
stringtab[stringtablast] := ch;
IF ch = 12C THEN EXIT END;
END;
END;
END ReadMsgs;
PROCEDURE GenListing (VAR sourcefilename: ARRAY OF CHAR;
VAR errorfilename: ARRAY OF CHAR;
VAR listfilename: ARRAY OF CHAR);
VAR
SourceFile, ListFile: File;
ch : CHAR; linecount, errcount: SHORTCARD;
PROCEDURE CreateHeadLine;
VAR header: ARRAY [0..100] OF CHAR; i: SHORTCARD;
BEGIN
header := "@ LISTING"; i := 0;
WHILE header[i] <> 0C DO PutByte(ListFile, header[i]); INC(i); END;
PutByte(ListFile, 12C);
END CreateHeadLine;
PROCEDURE CreateMessageLines;
VAR
nextcol, markcount, markindex, n, k: SHORTCARD;
LineClosed: BOOLEAN;
PROCEDURE PutDecimal (n: SHORTCARD);
VAR last, butlast: CARDINAL;
BEGIN
last := n MOD 10; butlast:= n DIV 10;
IF butlast > 0 THEN PutDecimal(butlast) END;
PutByte(ListFile, CHR(ORD("0")+last) );
END PutDecimal;
BEGIN
(* create line containing error markers *)
PutByte(ListFile, '@'); markcount := 0; nextcol := 2;
n := errcount;
WHILE (n <= errtablast) AND (errtab[n].line = linecount) DO
WHILE nextcol < errtab[n].col DO
PutByte(ListFile, ' '); INC(nextcol);
END;
IF nextcol = errtab[n].col THEN
INC(markcount); PutByte(ListFile, "^"); INC(nextcol)
END;
INC(n);
END;
IF markcount > 0 THEN PutByte(ListFile, 12C); LineClosed := TRUE;
ELSE LineClosed := FALSE;
END;
(* create lines containing error messages *)
markindex := 0; nextcol := 2;
WHILE (errcount<=errtablast) AND (errtab[errcount].line=linecount) DO
WHILE nextcol < errtab[errcount].col DO INC(nextcol) END;
IF nextcol=errtab[errcount].col THEN
INC(markindex); INC(nextcol)
END;
IF LineClosed THEN PutByte(ListFile, '@') END;
IF errtab[errcount].col > 0 THEN
PutByte(ListFile, ' ');
PutByte(ListFile, 'C');
PutByte(ListFile, 'o');
PutByte(ListFile, 'l');
PutByte(ListFile, ' ');
PutDecimal(errtab[errcount].col);
PutByte(ListFile, ':');
END;
PutByte(ListFile, ' ');
k := errtab[errcount].pos;
WHILE stringtab[k] <> 12C DO
PutByte(ListFile, stringtab[k]); INC(k);
END;
PutByte(ListFile, 12C); LineClosed := TRUE;
INC(errcount);
END;
END CreateMessageLines;
BEGIN (*GenListing*)
OpenInput (ErrorFile, errorfilename);
IF NOT Done() THEN
WriteString ("Lister: Cannot read file '");
WriteString (errorfilename);
WriteString ("'."); WriteLn;
RETURN;
END;
OpenInput (SourceFile, sourcefilename);
IF NOT Done() THEN
WriteString ("Lister: Cannot read file '");
WriteString (sourcefilename);
WriteString ("'."); WriteLn;
Close (ErrorFile);
RETURN;
END;
OpenOutput (ListFile, listfilename);
IF NOT Done() THEN
WriteString("Lister: Cannot write file '");
WriteString(listfilename);
WriteString("'."); WriteLn;
Close (ErrorFile);
Close (SourceFile);
RETURN;
END;
stringtablast := 0; errtablast := 0;
errtab[0].line := 0; errtab[0].col := 0; errtab[0].pos := 0;
ReadMsgs;
CreateHeadLine;
linecount := 1; errcount := 1;
WHILE NOT EOF(SourceFile) DO
GetByte (SourceFile, ch);
IF ch = 12C THEN
PutByte(ListFile, 12C);
IF (errcount<=errtablast) AND (errtab[errcount].line=linecount) THEN
CreateMessageLines;
END;
INC(linecount);
ELSE
PutByte(ListFile, ch);
END;
END;
IF errcount <= errtablast THEN
(* print remaining error messages *)
PutByte (ListFile, '@');
PutByte (ListFile,12C);
CreateMessageLines;
END;
Close (ErrorFile);
Close (SourceFile);
Close (ListFile);
END GenListing;
PROCEDURE Main;
VAR argc: SHORTCARD; argv: ArgTable;
VAR errorfilename,listfilename: ARRAY[0..MaxFilenameLength] OF CHAR;
BEGIN
GetArgs (argc, argv);
IF (argc<2) OR (argc>4) THEN
WriteString("USAGE: Lister src [error [list]]"); WriteLn;
ELSE
IF argc > 2 THEN
Assign(errorfilename, argv^[2]^);
ELSE
Assign(errorfilename, "ERRORS");
END;
IF argc > 3 THEN
Assign(listfilename, argv^[3]^);
ELSE
Assign(listfilename, "LISTING");
END;
GenListing (argv^[1]^, errorfilename, listfilename);
END;
END Main;
BEGIN
Main;
END Lister.
|
