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
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
|
/* $OpenBSD: compile_et.c,v 1.4 1998/05/13 17:54:20 art Exp $ */
/*
* Copyright 1986, 1987, 1988
* by MIT Student Information Processing Board.
*
* For copyright info, see "mit-sipb-copyright.h".
*/
#include <stdio.h>
#include <sys/types.h>
#include <sys/file.h>
#include <string.h>
#include <sys/param.h>
#include "compiler.h"
#ifndef __STDC__
#define const
#endif
#ifndef lint
static const char copyright[] =
"Copyright 1987,1988 by MIT Student Information Processing Board";
static const char rcsid_compile_et_c[] =
"$Id: compile_et.c,v 1.4 1998/05/13 17:54:20 art Exp $";
#endif
extern char *gensym();
extern char *current_token;
extern int table_number, current;
char buffer[BUFSIZ];
char *table_name = NULL;
FILE *hfile, *cfile;
/* C library */
extern char *malloc();
extern int errno;
/* lex stuff */
extern FILE *yyin;
extern unsigned lineno;
char * xmalloc (size) unsigned int size; {
char * p = malloc (size);
if (!p) {
perror (whoami);
exit (1);
}
return p;
}
static int check_arg (str_list, arg) char const *const *str_list, *arg; {
while (*str_list)
if (!strcmp(arg, *str_list++))
return 1;
return 0;
}
static const char *const debug_args[] = {
"d",
"debug",
0,
};
static const char *const lang_args[] = {
"lang",
"language",
0,
};
static const char *const language_names[] = {
"C",
"K&R C",
"C++",
0,
};
static const char * const c_src_prolog[] = {
"static const char * const text[] = {\n",
0,
};
static const char * const krc_src_prolog[] = {
"#ifdef __STDC__\n",
"#define NOARGS void\n",
"#else\n",
"#define NOARGS\n",
"#define const\n",
"#endif\n\n",
"static const char * const text[] = {\n",
0,
};
static const char *const struct_def[] = {
"struct error_table {\n",
" char const * const * msgs;\n",
" long base;\n",
" int n_msgs;\n",
"};\n",
"struct et_list {\n",
" struct et_list *next;\n",
" const struct error_table * table;\n",
"};\n",
"extern struct et_list *_et_list;\n",
"\n", 0,
};
static const char warning[] =
"/*\n * %s:\n * This file is automatically generated; please do not edit it.\n */\n";
/* pathnames */
char c_file[MAXPATHLEN]; /* output file */
char h_file[MAXPATHLEN]; /* output */
static void usage () {
fprintf (stderr, "usage: %s ERROR_TABLE\n",
whoami);
exit (1);
}
static void dup_err (type, one, two) char const *type, *one, *two; {
fprintf (stderr, "%s: multiple %s specified: `%s' and `%s'\n",
whoami, type, one, two);
usage ();
}
int main (argc, argv) int argc; char **argv; {
char *p, *ename;
int len;
char const * const *cpp;
int got_language = 0;
/* argument parsing */
debug = 0;
filename = 0;
whoami = argv[0];
p = strrchr (whoami, '/');
if (p)
whoami = p+1;
while (argv++, --argc) {
char *arg = *argv;
if (arg[0] != '-') {
if (filename)
dup_err ("filenames", filename, arg);
filename = arg;
}
else {
arg++;
if (check_arg (debug_args, arg))
debug++;
else if (check_arg (lang_args, arg)) {
got_language++;
arg = *++argv, argc--;
if (!arg)
usage ();
if (language)
dup_err ("languanges", language_names[(int)language], arg);
#define check_lang(x,v) else if (!strcasecmp(arg,x)) language = v
check_lang ("c", lang_C);
check_lang ("ansi_c", lang_C);
check_lang ("ansi-c", lang_C);
check_lang ("krc", lang_KRC);
check_lang ("kr_c", lang_KRC);
check_lang ("kr-c", lang_KRC);
check_lang ("k&r-c", lang_KRC);
check_lang ("k&r_c", lang_KRC);
check_lang ("c++", lang_CPP);
check_lang ("cplusplus", lang_CPP);
check_lang ("c-plus-plus", lang_CPP);
#undef check_lang
else {
fprintf (stderr, "%s: unknown language name `%s'\n",
whoami, arg);
fprintf (stderr, "\tpick one of: C K&R-C\n");
exit (1);
}
}
else {
fprintf (stderr, "%s: unknown control argument -`%s'\n",
whoami, arg);
usage ();
}
}
}
if (!filename)
usage ();
if (!got_language)
language = lang_KRC;
else if (language == lang_CPP) {
fprintf (stderr, "%s: Sorry, C++ support is not yet finished.\n",
whoami);
exit (1);
}
p = xmalloc (strlen (filename) + 5);
strcpy (p, filename);
filename = p;
p = strrchr(filename, '/');
if (p == NULL)
p = filename;
else
p++;
ename = p;
len = strlen (ename);
p += len - 3;
if (strcmp (p, ".et"))
p += 3;
*p++ = '.';
/* now p points to where "et" suffix should start */
/* generate new filenames */
strcpy (p, "c");
strcpy (c_file, ename);
*p = 'h';
strcpy (h_file, ename);
strcpy (p, "et");
yyin = fopen(filename, "r");
if (!yyin) {
perror(filename);
exit(1);
}
hfile = fopen(h_file, "w");
if (hfile == NULL) {
perror(h_file);
exit(1);
}
fprintf (hfile, warning, h_file);
cfile = fopen(c_file, "w");
if (cfile == NULL) {
perror(c_file);
exit(1);
}
fprintf (cfile, warning, c_file);
/* prologue */
if (language == lang_C)
cpp = c_src_prolog;
else if (language == lang_KRC)
cpp = krc_src_prolog;
else
abort ();
while (*cpp)
fputs (*cpp++, cfile);
/* parse it */
yyparse();
fclose(yyin); /* bye bye input file */
fputs (" 0\n};\n\n", cfile);
for (cpp = struct_def; *cpp; cpp++)
fputs (*cpp, cfile);
fprintf(cfile,
"static const struct error_table et = { text, %d, %d };\n\n",
table_number, current);
fputs("static struct et_list link = { 0, 0 };\n\n",
cfile);
fprintf(cfile, "void initialize_%s_error_table (%s) {\n",
table_name, (language == lang_C) ? "void" : "NOARGS");
fputs(" if (!link.table) {\n", cfile);
fputs(" link.next = _et_list;\n", cfile);
fputs(" link.table = &et;\n", cfile);
fputs(" _et_list = &link;\n", cfile);
fputs(" }\n", cfile);
fputs("}\n", cfile);
fclose(cfile);
fprintf (hfile, "extern void initialize_%s_error_table ();\n",
table_name);
fprintf (hfile, "#define ERROR_TABLE_BASE_%s (%dL)\n",
table_name, table_number);
/* compatibility... */
fprintf (hfile, "\n/* for compatibility with older versions... */\n");
fprintf (hfile, "#define init_%s_err_tbl initialize_%s_error_table\n",
table_name, table_name);
fprintf (hfile, "#define %s_err_base ERROR_TABLE_BASE_%s\n", table_name,
table_name);
fclose(hfile); /* bye bye include file */
return 0;
}
int yyerror(s) char *s; {
fputs(s, stderr);
fprintf(stderr, "\nLine number %d; last token was '%s'\n",
lineno, current_token);
return 0;
}
|
