1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1980, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #ifndef lint
33 static const char copyright[] =
34 "@(#) Copyright (c) 1980, 1993\n\
35 The Regents of the University of California. All rights reserved.\n";
36 #endif /* not lint */
37
38 #ifndef lint
39 #if 0
40 static char sccsid[] = "@(#)mkstr.c 8.1 (Berkeley) 6/6/93";
41 #endif
42 #endif /* not lint */
43
44 #include <sys/cdefs.h>
45 __FBSDID("$FreeBSD$");
46
47 #include <err.h>
48 #include <errno.h>
49 #include <stdio.h>
50 #include <stdlib.h>
51 #include <string.h>
52
53 #define ungetchar(c) ungetc(c, stdin)
54
55 /*
56 * mkstr - create a string error message file by massaging C source
57 *
58 * Bill Joy UCB August 1977
59 *
60 * Modified March 1978 to hash old messages to be able to recompile
61 * without addding messages to the message file (usually)
62 *
63 * Based on an earlier program conceived by Bill Joy and Chuck Haley
64 *
65 * Program to create a string error message file
66 * from a group of C programs. Arguments are the name
67 * of the file where the strings are to be placed, the
68 * prefix of the new files where the processed source text
69 * is to be placed, and the files to be processed.
70 *
71 * The program looks for 'error("' in the source stream.
72 * Whenever it finds this, the following characters from the '"'
73 * to a '"' are replaced by 'seekpt' where seekpt is a
74 * pointer into the error message file.
75 * If the '(' is not immediately followed by a '"' no change occurs.
76 *
77 * The optional '-' causes strings to be added at the end of the
78 * existing error message file for recompilation of single routines.
79 */
80
81 static FILE *mesgread, *mesgwrite;
82 static char name[100], *np;
83
84 void copystr(void);
85 int fgetNUL(char *, int, FILE *);
86 unsigned hashit(char *, int, unsigned);
87 void inithash(void);
88 int match(const char *);
89 int octdigit(char);
90 void process(void);
91 void usage(void);
92
93 int
main(int argc,char * argv[])94 main(int argc, char *argv[])
95 {
96 char addon = 0;
97 size_t namelen;
98
99 argc--, argv++;
100 if (argc > 1 && argv[0][0] == '-')
101 addon++, argc--, argv++;
102 if (argc < 3)
103 usage();
104 mesgwrite = fopen(argv[0], addon ? "a" : "w");
105 if (mesgwrite == NULL)
106 err(1, "%s", argv[0]);
107 mesgread = fopen(argv[0], "r");
108 if (mesgread == NULL)
109 err(1, "%s", argv[0]);
110 inithash();
111 argc--, argv++;
112 namelen = strlcpy(name, argv[0], sizeof(name));
113 if (namelen >= sizeof(name)) {
114 errno = ENAMETOOLONG;
115 err(1, "%s", argv[0]);
116 }
117 np = name + namelen;
118 argc--, argv++;
119 do {
120 if (strlcpy(np, argv[0], sizeof(name) - namelen) >=
121 sizeof(name) - namelen) {
122 errno = ENAMETOOLONG;
123 err(1, "%s%s", name, argv[0]);
124 }
125 if (freopen(name, "w", stdout) == NULL)
126 err(1, "%s", name);
127 if (freopen(argv[0], "r", stdin) == NULL)
128 err(1, "%s", argv[0]);
129 process();
130 argc--, argv++;
131 } while (argc > 0);
132 exit(0);
133 }
134
135 void
usage(void)136 usage(void)
137 {
138 fprintf(stderr, "usage: mkstr [-] mesgfile prefix file ...\n");
139 exit(1);
140 }
141
142 void
process(void)143 process(void)
144 {
145 int c;
146
147 for (;;) {
148 c = getchar();
149 if (c == EOF)
150 return;
151 if (c != 'e') {
152 putchar(c);
153 continue;
154 }
155 if (match("error(")) {
156 printf("error(");
157 c = getchar();
158 if (c != '"')
159 putchar(c);
160 else
161 copystr();
162 }
163 }
164 }
165
166 int
match(const char * ocp)167 match(const char *ocp)
168 {
169 const char *cp;
170 int c;
171
172 for (cp = ocp + 1; *cp; cp++) {
173 c = getchar();
174 if (c != *cp) {
175 while (ocp < cp)
176 putchar(*ocp++);
177 ungetchar(c);
178 return (0);
179 }
180 }
181 return (1);
182 }
183
184 void
copystr(void)185 copystr(void)
186 {
187 int c, ch;
188 char buf[512];
189 char *cp = buf;
190
191 for (;;) {
192 if (cp == buf + sizeof(buf) - 2)
193 errx(1, "message too long");
194 c = getchar();
195 if (c == EOF)
196 break;
197 switch (c) {
198
199 case '"':
200 *cp++ = 0;
201 goto out;
202 case '\\':
203 c = getchar();
204 switch (c) {
205
206 case 'b':
207 c = '\b';
208 break;
209 case 't':
210 c = '\t';
211 break;
212 case 'r':
213 c = '\r';
214 break;
215 case 'n':
216 c = '\n';
217 break;
218 case '\n':
219 continue;
220 case 'f':
221 c = '\f';
222 break;
223 case '0':
224 c = 0;
225 break;
226 case '\\':
227 break;
228 default:
229 if (!octdigit(c))
230 break;
231 c -= '0';
232 ch = getchar();
233 if (!octdigit(ch))
234 break;
235 c <<= 7, c += ch - '0';
236 ch = getchar();
237 if (!octdigit(ch))
238 break;
239 c <<= 3, c+= ch - '0', ch = -1;
240 break;
241 }
242 }
243 *cp++ = c;
244 }
245 out:
246 *cp = 0;
247 printf("%d", hashit(buf, 1, 0));
248 }
249
250 int
octdigit(char c)251 octdigit(char c)
252 {
253
254 return (c >= '0' && c <= '7');
255 }
256
257 void
inithash(void)258 inithash(void)
259 {
260 char buf[512];
261 int mesgpt = 0;
262
263 rewind(mesgread);
264 while (fgetNUL(buf, sizeof buf, mesgread) != 0) {
265 hashit(buf, 0, mesgpt);
266 mesgpt += strlen(buf) + 2;
267 }
268 }
269
270 #define NBUCKETS 511
271
272 static struct hash {
273 long hval;
274 unsigned hpt;
275 struct hash *hnext;
276 } *bucket[NBUCKETS];
277
278 unsigned
hashit(char * str,int really,unsigned fakept)279 hashit(char *str, int really, unsigned fakept)
280 {
281 int i;
282 struct hash *hp;
283 char buf[512];
284 long hashval = 0;
285 char *cp;
286
287 if (really)
288 fflush(mesgwrite);
289 for (cp = str; *cp;)
290 hashval = (hashval << 1) + *cp++;
291 i = hashval % NBUCKETS;
292 if (i < 0)
293 i += NBUCKETS;
294 if (really != 0)
295 for (hp = bucket[i]; hp != 0; hp = hp->hnext)
296 if (hp->hval == hashval) {
297 fseek(mesgread, (long) hp->hpt, 0);
298 fgetNUL(buf, sizeof buf, mesgread);
299 /*
300 fprintf(stderr, "Got (from %d) %s\n", hp->hpt, buf);
301 */
302 if (strcmp(buf, str) == 0)
303 break;
304 }
305 if (!really || hp == 0) {
306 hp = (struct hash *) calloc(1, sizeof *hp);
307 if (hp == NULL)
308 err(1, NULL);
309 hp->hnext = bucket[i];
310 hp->hval = hashval;
311 hp->hpt = really ? ftell(mesgwrite) : fakept;
312 if (really) {
313 fwrite(str, sizeof (char), strlen(str) + 1, mesgwrite);
314 fwrite("\n", sizeof (char), 1, mesgwrite);
315 }
316 bucket[i] = hp;
317 }
318 /*
319 fprintf(stderr, "%s hashed to %ld at %d\n", str, hp->hval, hp->hpt);
320 */
321 return (hp->hpt);
322 }
323
324 int
fgetNUL(char * obuf,int rmdr,FILE * file)325 fgetNUL(char *obuf, int rmdr, FILE *file)
326 {
327 int c;
328 char *buf = obuf;
329
330 while (--rmdr > 0 && (c = getc(file)) != 0 && c != EOF)
331 *buf++ = c;
332 *buf++ = 0;
333 getc(file);
334 return ((feof(file) || ferror(file)) ? 0 : 1);
335 }
336