1 /* $NetBSD: mkstr.c,v 1.16 2012/03/20 20:34:58 matt Exp $ */
2
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 #include <sys/cdefs.h>
33 #ifndef lint
34 __COPYRIGHT("@(#) Copyright (c) 1980, 1993\
35 The Regents of the University of California. All rights reserved.");
36 #endif /* not lint */
37
38 #ifndef lint
39 #if 0
40 static char sccsid[] = "@(#)mkstr.c 8.1 (Berkeley) 6/6/93";
41 #else
42 __RCSID("$NetBSD: mkstr.c,v 1.16 2012/03/20 20:34:58 matt Exp $");
43 #endif
44 #endif /* not lint */
45
46 #include <stdio.h>
47 #include <stdlib.h>
48 #include <string.h>
49
50 #define ungetchar(c) ungetc(c, stdin)
51
52 /*
53 * mkstr - create a string error message file by massaging C source
54 *
55 * Bill Joy UCB August 1977
56 *
57 * Modified March 1978 to hash old messages to be able to recompile
58 * without addding messages to the message file (usually)
59 *
60 * Based on an earlier program conceived by Bill Joy and Chuck Haley
61 *
62 * Program to create a string error message file
63 * from a group of C programs. Arguments are the name
64 * of the file where the strings are to be placed, the
65 * prefix of the new files where the processed source text
66 * is to be placed, and the files to be processed.
67 *
68 * The program looks for 'error("' in the source stream.
69 * Whenever it finds this, the following characters from the '"'
70 * to a '"' are replaced by 'seekpt' where seekpt is a
71 * pointer into the error message file.
72 * If the '(' is not immediately followed by a '"' no change occurs.
73 *
74 * The optional '-' causes strings to be added at the end of the
75 * existing error message file for recompilation of single routines.
76 */
77
78
79 FILE *mesgread, *mesgwrite;
80 char *progname;
81 const char usagestr[] = "usage: %s [ - ] mesgfile prefix file ...\n";
82 char name[100], *np;
83
84 void process(void);
85 int main(int, char **);
86 int match(const char *);
87 int octdigit(char);
88 void inithash(void);
89 long hashit(const char *, char, long);
90 void copystr(void);
91 int fgetNUL(char *, int, FILE *);
92
93 int
main(int argc,char * argv[])94 main(int argc, char *argv[])
95 {
96 char addon = 0;
97
98 argc--, progname = *argv++;
99 if (argc > 1 && argv[0][0] == '-')
100 addon++, argc--, argv++;
101 if (argc < 3)
102 fprintf(stderr, usagestr, progname), exit(1);
103 mesgwrite = fopen(argv[0], addon ? "a" : "w");
104 if (mesgwrite == NULL)
105 perror(argv[0]), exit(1);
106 mesgread = fopen(argv[0], "r");
107 if (mesgread == NULL)
108 perror(argv[0]), exit(1);
109 inithash();
110 argc--, argv++;
111 strlcpy(name, argv[0], sizeof(name));
112 np = name + strlen(name);
113 argc--, argv++;
114 do {
115 strlcpy(np, argv[0], sizeof(name) - (np - name));
116 if (freopen(name, "w", stdout) == NULL)
117 perror(name), exit(1);
118 if (freopen(argv[0], "r", stdin) == NULL)
119 perror(argv[0]), exit(1);
120 process();
121 argc--, argv++;
122 } while (argc > 0);
123 exit(0);
124 }
125
126 void
process(void)127 process(void)
128 {
129 int c;
130
131 for (;;) {
132 c = getchar();
133 if (c == EOF)
134 return;
135 if (c != 'e') {
136 putchar(c);
137 continue;
138 }
139 if (match("error(")) {
140 printf("error(");
141 c = getchar();
142 if (c != '"')
143 putchar(c);
144 else
145 copystr();
146 }
147 }
148 }
149
150 int
match(const char * ocp)151 match(const char *ocp)
152 {
153 const char *cp;
154 int c;
155
156 for (cp = ocp + 1; *cp; cp++) {
157 c = getchar();
158 if (c != *cp) {
159 while (ocp < cp)
160 putchar(*ocp++);
161 ungetchar(c);
162 return (0);
163 }
164 }
165 return (1);
166 }
167
168 void
copystr(void)169 copystr(void)
170 {
171 int c, ch;
172 char buf[512];
173 char *cp = buf;
174
175 for (;;) {
176 c = getchar();
177 if (c == EOF)
178 break;
179 switch (c) {
180
181 case '"':
182 *cp++ = 0;
183 goto out;
184 case '\\':
185 c = getchar();
186 switch (c) {
187
188 case 'b':
189 c = '\b';
190 break;
191 case 't':
192 c = '\t';
193 break;
194 case 'r':
195 c = '\r';
196 break;
197 case 'n':
198 c = '\n';
199 break;
200 case '\n':
201 continue;
202 case 'f':
203 c = '\f';
204 break;
205 case '0':
206 c = 0;
207 break;
208 case '\\':
209 break;
210 default:
211 if (!octdigit(c))
212 break;
213 c -= '0';
214 ch = getchar();
215 if (!octdigit(ch))
216 break;
217 c <<= 7, c += ch - '0';
218 ch = getchar();
219 if (!octdigit(ch))
220 break;
221 c <<= 3, c+= ch - '0', ch = -1;
222 break;
223 }
224 }
225 *cp++ = c;
226 }
227 out:
228 *cp = 0;
229 printf("%ld", hashit(buf, 1, 0));
230 }
231
232 int
octdigit(char c)233 octdigit(char c)
234 {
235
236 return (c >= '0' && c <= '7');
237 }
238
239 void
inithash(void)240 inithash(void)
241 {
242 char buf[512];
243 long mesgpt = 0;
244
245 rewind(mesgread);
246 while (fgetNUL(buf, sizeof buf, mesgread) != 0) {
247 hashit(buf, 0, mesgpt);
248 mesgpt += strlen(buf) + 2;
249 }
250 }
251
252 #define NBUCKETS 511
253
254 struct hash {
255 long hval;
256 long hpt;
257 struct hash *hnext;
258 } *bucket[NBUCKETS];
259
260 long
hashit(const char * str,char really,long fakept)261 hashit(const char *str, char really, long fakept)
262 {
263 int i;
264 struct hash *hp;
265 char buf[512];
266 long hashval = 0;
267 const char *cp;
268
269 #ifdef __GNUC__
270 hp = NULL; /* XXX gcc */
271 #endif
272 if (really)
273 fflush(mesgwrite);
274 for (cp = str; *cp;)
275 hashval = (hashval << 1) + *cp++;
276 i = hashval % NBUCKETS;
277 if (i < 0)
278 i += NBUCKETS;
279 if (really != 0)
280 for (hp = bucket[i]; hp != 0; hp = hp->hnext)
281 if (hp->hval == hashval) {
282 fseek(mesgread, hp->hpt, 0);
283 fgetNUL(buf, sizeof buf, mesgread);
284 /*
285 fprintf(stderr, "Got (from %ld) %s\n", hp->hpt, buf);
286 */
287 if (strcmp(buf, str) == 0)
288 break;
289 }
290 if (!really || hp == 0) {
291 hp = (struct hash *) calloc(1, sizeof *hp);
292 hp->hnext = bucket[i];
293 hp->hval = hashval;
294 hp->hpt = really ? ftell(mesgwrite) : fakept;
295 if (really) {
296 fwrite(str, sizeof (char), strlen(str) + 1, mesgwrite);
297 fwrite("\n", sizeof (char), 1, mesgwrite);
298 }
299 bucket[i] = hp;
300 }
301 /*
302 fprintf(stderr, "%s hashed to %ld at %ld\n", str, hp->hval, hp->hpt);
303 */
304 return (hp->hpt);
305 }
306
307 #include <sys/types.h>
308 #include <sys/stat.h>
309
310 int
fgetNUL(char * obuf,int rmdr,FILE * file)311 fgetNUL(char *obuf, int rmdr, FILE *file)
312 {
313 int c;
314 char *buf = obuf;
315
316 while (--rmdr > 0 && (c = getc(file)) != 0 && c != EOF)
317 *buf++ = c;
318 *buf++ = 0;
319 getc(file);
320 return ((feof(file) || ferror(file)) ? 0 : 1);
321 }
322