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22e155fc DF |
1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
3 | * All rights reserved. The Berkeley software License Agreement | |
4 | * specifies the terms and conditions for redistribution. | |
5 | */ | |
6 | ||
7 | #ifndef lint | |
8 | char copyright[] = | |
9 | "@(#) Copyright (c) 1980 Regents of the University of California.\n\ | |
10 | All rights reserved.\n"; | |
11 | #endif not lint | |
12 | ||
13 | #ifndef lint | |
14 | static char sccsid[] = "@(#)mkstr.c 5.1 (Berkeley) %G%"; | |
15 | #endif not lint | |
16 | ||
fe6c8cd8 BJ |
17 | #include <stdio.h> |
18 | ||
19 | #define ungetchar(c) ungetc(c, stdin) | |
20 | ||
21 | long ftell(); | |
22 | char *calloc(); | |
23 | /* | |
24 | * mkstr - create a string error message file by massaging C source | |
25 | * | |
26 | * Bill Joy UCB August 1977 | |
27 | * | |
28 | * Modified March 1978 to hash old messages to be able to recompile | |
29 | * without addding messages to the message file (usually) | |
30 | * | |
31 | * Based on an earlier program conceived by Bill Joy and Chuck Haley | |
32 | * | |
33 | * Program to create a string error message file | |
34 | * from a group of C programs. Arguments are the name | |
35 | * of the file where the strings are to be placed, the | |
36 | * prefix of the new files where the processed source text | |
37 | * is to be placed, and the files to be processed. | |
38 | * | |
39 | * The program looks for 'error("' in the source stream. | |
40 | * Whenever it finds this, the following characters from the '"' | |
41 | * to a '"' are replaced by 'seekpt' where seekpt is a | |
42 | * pointer into the error message file. | |
43 | * If the '(' is not immediately followed by a '"' no change occurs. | |
44 | * | |
45 | * The optional '-' causes strings to be added at the end of the | |
46 | * existing error message file for recompilation of single routines. | |
47 | */ | |
48 | ||
49 | ||
50 | FILE *mesgread, *mesgwrite; | |
51 | char *progname; | |
52 | char usagestr[] = "usage: %s [ - ] mesgfile prefix file ...\n"; | |
53 | char name[100], *np; | |
54 | ||
55 | main(argc, argv) | |
56 | int argc; | |
57 | char *argv[]; | |
58 | { | |
59 | char addon = 0; | |
60 | ||
61 | argc--, progname = *argv++; | |
62 | if (argc > 1 && argv[0][0] == '-') | |
63 | addon++, argc--, argv++; | |
64 | if (argc < 3) | |
65 | fprintf(stderr, usagestr, progname), exit(1); | |
66 | mesgwrite = fopen(argv[0], addon ? "a" : "w"); | |
67 | if (mesgwrite == NULL) | |
68 | perror(argv[0]), exit(1); | |
69 | mesgread = fopen(argv[0], "r"); | |
70 | if (mesgread == NULL) | |
71 | perror(argv[0]), exit(1); | |
72 | inithash(); | |
73 | argc--, argv++; | |
74 | strcpy(name, argv[0]); | |
75 | np = name + strlen(name); | |
76 | argc--, argv++; | |
77 | do { | |
78 | strcpy(np, argv[0]); | |
79 | if (freopen(name, "w", stdout) == NULL) | |
80 | perror(name), exit(1); | |
81 | if (freopen(argv[0], "r", stdin) == NULL) | |
82 | perror(argv[0]), exit(1); | |
83 | process(); | |
84 | argc--, argv++; | |
85 | } while (argc > 0); | |
86 | exit(0); | |
87 | } | |
88 | ||
89 | process() | |
90 | { | |
91 | register char *cp; | |
92 | register c; | |
93 | ||
94 | for (;;) { | |
95 | c = getchar(); | |
96 | if (c == EOF) | |
97 | return; | |
98 | if (c != 'e') { | |
99 | putchar(c); | |
100 | continue; | |
101 | } | |
102 | if (match("error(")) { | |
103 | printf("error("); | |
104 | c = getchar(); | |
105 | if (c != '"') | |
106 | putchar(c); | |
107 | else | |
108 | copystr(); | |
109 | } | |
110 | } | |
111 | } | |
112 | ||
113 | match(ocp) | |
114 | char *ocp; | |
115 | { | |
116 | register char *cp; | |
117 | register c; | |
118 | ||
119 | for (cp = ocp + 1; *cp; cp++) { | |
120 | c = getchar(); | |
121 | if (c != *cp) { | |
122 | while (ocp < cp) | |
123 | putchar(*ocp++); | |
124 | ungetchar(c); | |
125 | return (0); | |
126 | } | |
127 | } | |
128 | return (1); | |
129 | } | |
130 | ||
131 | copystr() | |
132 | { | |
133 | register c, ch; | |
134 | char buf[512]; | |
135 | register char *cp = buf; | |
136 | ||
137 | for (;;) { | |
138 | c = getchar(); | |
139 | if (c == EOF) | |
140 | break; | |
141 | switch (c) { | |
142 | ||
143 | case '"': | |
144 | *cp++ = 0; | |
145 | goto out; | |
146 | case '\\': | |
147 | c = getchar(); | |
148 | switch (c) { | |
149 | ||
150 | case 'b': | |
151 | c = '\b'; | |
152 | break; | |
153 | case 't': | |
154 | c = '\t'; | |
155 | break; | |
156 | case 'r': | |
157 | c = '\r'; | |
158 | break; | |
159 | case 'n': | |
160 | c = '\n'; | |
161 | break; | |
162 | case '\n': | |
163 | continue; | |
164 | case 'f': | |
165 | c = '\f'; | |
166 | break; | |
167 | case '0': | |
168 | c = 0; | |
169 | break; | |
170 | case '\\': | |
171 | break; | |
172 | default: | |
173 | if (!octdigit(c)) | |
174 | break; | |
175 | c -= '0'; | |
176 | ch = getchar(); | |
177 | if (!octdigit(ch)) | |
178 | break; | |
179 | c <<= 7, c += ch - '0'; | |
180 | ch = getchar(); | |
181 | if (!octdigit(ch)) | |
182 | break; | |
183 | c <<= 3, c+= ch - '0', ch = -1; | |
184 | break; | |
185 | } | |
186 | } | |
187 | *cp++ = c; | |
188 | } | |
189 | out: | |
190 | *cp = 0; | |
191 | printf("%d", hashit(buf, 1, NULL)); | |
192 | } | |
193 | ||
194 | octdigit(c) | |
195 | char c; | |
196 | { | |
197 | ||
198 | return (c >= '0' && c <= '7'); | |
199 | } | |
200 | ||
201 | inithash() | |
202 | { | |
203 | char buf[512]; | |
204 | int mesgpt = 0; | |
205 | ||
206 | rewind(mesgread); | |
207 | while (fgetNUL(buf, sizeof buf, mesgread) != NULL) { | |
208 | hashit(buf, 0, mesgpt); | |
209 | mesgpt += strlen(buf) + 2; | |
210 | } | |
211 | } | |
212 | ||
213 | #define NBUCKETS 511 | |
214 | ||
215 | struct hash { | |
216 | long hval; | |
217 | unsigned hpt; | |
218 | struct hash *hnext; | |
219 | } *bucket[NBUCKETS]; | |
220 | ||
221 | hashit(str, really, fakept) | |
222 | char *str; | |
223 | char really; | |
224 | unsigned fakept; | |
225 | { | |
226 | int i; | |
227 | register struct hash *hp; | |
228 | char buf[512]; | |
229 | long hashval = 0; | |
230 | register char *cp; | |
231 | ||
232 | if (really) | |
233 | fflush(mesgwrite); | |
234 | for (cp = str; *cp;) | |
235 | hashval = (hashval << 1) + *cp++; | |
236 | i = hashval % NBUCKETS; | |
237 | if (i < 0) | |
238 | i += NBUCKETS; | |
239 | if (really != 0) | |
240 | for (hp = bucket[i]; hp != 0; hp = hp->hnext) | |
241 | if (hp->hval == hashval) { | |
242 | fseek(mesgread, (long) hp->hpt, 0); | |
243 | fgetNUL(buf, sizeof buf, mesgread); | |
244 | /* | |
245 | fprintf(stderr, "Got (from %d) %s\n", hp->hpt, buf); | |
246 | */ | |
247 | if (strcmp(buf, str) == 0) | |
248 | break; | |
249 | } | |
250 | if (!really || hp == 0) { | |
251 | hp = (struct hash *) calloc(1, sizeof *hp); | |
252 | hp->hnext = bucket[i]; | |
253 | hp->hval = hashval; | |
254 | hp->hpt = really ? ftell(mesgwrite) : fakept; | |
255 | if (really) { | |
256 | fwrite(str, sizeof (char), strlen(str) + 1, mesgwrite); | |
257 | fwrite("\n", sizeof (char), 1, mesgwrite); | |
258 | } | |
259 | bucket[i] = hp; | |
260 | } | |
261 | /* | |
262 | fprintf(stderr, "%s hashed to %ld at %d\n", str, hp->hval, hp->hpt); | |
263 | */ | |
264 | return (hp->hpt); | |
265 | } | |
266 | ||
267 | #include <sys/types.h> | |
268 | #include <sys/stat.h> | |
269 | ||
270 | fgetNUL(obuf, rmdr, file) | |
271 | char *obuf; | |
272 | register int rmdr; | |
273 | FILE *file; | |
274 | { | |
275 | register c; | |
276 | register char *buf = obuf; | |
277 | ||
278 | while (--rmdr > 0 && (c = getc(file)) != 0 && c != EOF) | |
279 | *buf++ = c; | |
280 | *buf++ = 0; | |
281 | getc(file); | |
282 | return ((feof(file) || ferror(file)) ? NULL : 1); | |
283 | } |