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e2e29c38 BJ |
1 | /* Copyright (c) 1979 Regents of the University of California */ |
2 | #include <stdio.h> | |
3 | ||
4 | #define ungetchar(c) ungetc(c, stdin) | |
5 | ||
6 | long ftell(); | |
7 | char *calloc(); | |
8 | /* | |
9 | * mkstr - create a string error message file by massaging C source | |
10 | * | |
11 | * Bill Joy UCB August 1977 | |
12 | * | |
13 | * Modified March 1978 to hash old messages to be able to recompile | |
14 | * without addding messages to the message file (usually) | |
15 | * | |
16 | * Based on an earlier program conceived by Bill Joy and Chuck Haley | |
17 | * | |
18 | * Program to create a string error message file | |
19 | * from a group of C programs. Arguments are the name | |
20 | * of the file where the strings are to be placed, the | |
21 | * prefix of the new files where the processed source text | |
22 | * is to be placed, and the files to be processed. | |
23 | * | |
24 | * The program looks for 'error("' in the source stream. | |
25 | * Whenever it finds this, the following characters from the '"' | |
26 | * to a '"' are replaced by 'seekpt' where seekpt is a | |
27 | * pointer into the error message file. | |
28 | * If the '(' is not immediately followed by a '"' no change occurs. | |
29 | * | |
30 | * The optional '-' causes strings to be added at the end of the | |
31 | * existing error message file for recompilation of single routines. | |
32 | */ | |
33 | ||
34 | ||
35 | FILE *mesgread, *mesgwrite; | |
36 | char *progname; | |
37 | char usagestr[] = "usage: %s [ - ] mesgfile prefix file ...\n"; | |
38 | char name[100], *np; | |
39 | ||
40 | main(argc, argv) | |
41 | int argc; | |
42 | char *argv[]; | |
43 | { | |
44 | char addon = 0; | |
45 | ||
46 | argc--, progname = *argv++; | |
47 | if (argc > 1 && argv[0][0] == '-') | |
48 | addon++, argc--, argv++; | |
49 | if (argc < 3) | |
50 | fprintf(stderr, usagestr, progname), exit(1); | |
51 | mesgwrite = fopen(argv[0], addon ? "a" : "w"); | |
52 | if (mesgwrite == NULL) | |
53 | perror(argv[0]), exit(1); | |
54 | mesgread = fopen(argv[0], "r"); | |
55 | if (mesgread == NULL) | |
56 | perror(argv[0]), exit(1); | |
57 | inithash(); | |
58 | argc--, argv++; | |
59 | strcpy(name, argv[0]); | |
60 | np = name + strlen(name); | |
61 | argc--, argv++; | |
62 | do { | |
63 | strcpy(np, argv[0]); | |
64 | if (freopen(name, "w", stdout) == NULL) | |
65 | perror(name), exit(1); | |
66 | if (freopen(argv[0], "r", stdin) == NULL) | |
67 | perror(argv[0]), exit(1); | |
68 | process(); | |
69 | argc--, argv++; | |
70 | } while (argc > 0); | |
71 | exit(0); | |
72 | } | |
73 | ||
74 | process() | |
75 | { | |
76 | register char *cp; | |
77 | register c; | |
78 | ||
79 | for (;;) { | |
80 | c = getchar(); | |
81 | if (c == EOF) | |
82 | return; | |
83 | if (c != 'e') { | |
84 | putchar(c); | |
85 | continue; | |
86 | } | |
87 | if (match("error(")) { | |
88 | printf("error("); | |
89 | c = getchar(); | |
90 | if (c != '"') | |
91 | putchar(c); | |
92 | else | |
93 | copystr(); | |
94 | } | |
95 | } | |
96 | } | |
97 | ||
98 | match(ocp) | |
99 | char *ocp; | |
100 | { | |
101 | register char *cp; | |
102 | register c; | |
103 | ||
104 | for (cp = ocp + 1; *cp; cp++) { | |
105 | c = getchar(); | |
106 | if (c != *cp) { | |
107 | while (ocp < cp) | |
108 | putchar(*ocp++); | |
109 | ungetchar(c); | |
110 | return (0); | |
111 | } | |
112 | } | |
113 | return (1); | |
114 | } | |
115 | ||
116 | copystr() | |
117 | { | |
118 | register c, ch; | |
119 | char buf[512]; | |
120 | register char *cp = buf; | |
121 | ||
122 | for (;;) { | |
123 | c = getchar(); | |
124 | if (c == EOF) | |
125 | break; | |
126 | switch (c) { | |
127 | ||
128 | case '"': | |
129 | *cp++ = 0; | |
130 | goto out; | |
131 | case '\\': | |
132 | c = getchar(); | |
133 | switch (c) { | |
134 | ||
135 | case 'b': | |
136 | c = '\b'; | |
137 | break; | |
138 | case 't': | |
139 | c = '\t'; | |
140 | break; | |
141 | case 'r': | |
142 | c = '\r'; | |
143 | break; | |
144 | case 'n': | |
145 | c = '\n'; | |
146 | break; | |
147 | case '\n': | |
148 | continue; | |
149 | case 'f': | |
150 | c = '\f'; | |
151 | break; | |
152 | case '0': | |
153 | c = 0; | |
154 | break; | |
155 | case '\\': | |
156 | break; | |
157 | default: | |
158 | if (!octdigit(c)) | |
159 | break; | |
160 | c -= '0'; | |
161 | ch = getchar(); | |
162 | if (!octdigit(ch)) | |
163 | break; | |
164 | c <<= 7, c += ch - '0'; | |
165 | ch = getchar(); | |
166 | if (!octdigit(ch)) | |
167 | break; | |
168 | c <<= 3, c+= ch - '0', ch = -1; | |
169 | break; | |
170 | } | |
171 | } | |
172 | *cp++ = c; | |
173 | } | |
174 | out: | |
175 | *cp = 0; | |
176 | printf("%d", hashit(buf, 1, NULL)); | |
177 | } | |
178 | ||
179 | octdigit(c) | |
180 | char c; | |
181 | { | |
182 | ||
183 | return (c >= '0' && c <= '7'); | |
184 | } | |
185 | ||
186 | inithash() | |
187 | { | |
188 | char buf[512]; | |
189 | int mesgpt = 0; | |
190 | ||
191 | rewind(mesgread); | |
192 | while (fgetNUL(buf, sizeof buf, mesgread) != NULL) { | |
193 | hashit(buf, 0, mesgpt); | |
194 | mesgpt += strlen(buf) + 2; | |
195 | } | |
196 | } | |
197 | ||
198 | #define NBUCKETS 511 | |
199 | ||
200 | struct hash { | |
201 | long hval; | |
202 | unsigned hpt; | |
203 | struct hash *hnext; | |
204 | } *bucket[NBUCKETS]; | |
205 | ||
206 | hashit(str, really, fakept) | |
207 | char *str; | |
208 | char really; | |
209 | unsigned fakept; | |
210 | { | |
211 | int i; | |
212 | register struct hash *hp; | |
213 | char buf[512]; | |
214 | long hashval = 0; | |
215 | register char *cp; | |
216 | ||
217 | if (really) | |
218 | fflush(mesgwrite); | |
219 | for (cp = str; *cp;) | |
220 | hashval = (hashval << 1) + *cp++; | |
221 | i = hashval % NBUCKETS; | |
222 | if (i < 0) | |
223 | i += NBUCKETS; | |
224 | if (really != 0) | |
225 | for (hp = bucket[i]; hp != 0; hp = hp->hnext) | |
226 | if (hp->hval == hashval) { | |
227 | fseek(mesgread, (long) hp->hpt, 0); | |
228 | fgetNUL(buf, sizeof buf, mesgread); | |
229 | /* | |
230 | fprintf(stderr, "Got (from %d) %s\n", hp->hpt, buf); | |
231 | */ | |
232 | if (strcmp(buf, str) == 0) | |
233 | break; | |
234 | } | |
235 | if (!really || hp == 0) { | |
236 | hp = (struct hash *) calloc(1, sizeof *hp); | |
237 | hp->hnext = bucket[i]; | |
238 | hp->hval = hashval; | |
239 | hp->hpt = really ? ftell(mesgwrite) : fakept; | |
240 | if (really) { | |
241 | fwrite(str, sizeof (char), strlen(str) + 1, mesgwrite); | |
242 | fwrite("\n", sizeof (char), 1, mesgwrite); | |
243 | } | |
244 | bucket[i] = hp; | |
245 | } | |
246 | /* | |
247 | fprintf(stderr, "%s hashed to %ld at %d\n", str, hp->hval, hp->hpt); | |
248 | */ | |
249 | return (hp->hpt); | |
250 | } | |
251 | ||
252 | #include <sys/types.h> | |
253 | #include <sys/stat.h> | |
254 | ||
255 | fgetNUL(obuf, rmdr, file) | |
256 | char *obuf; | |
257 | register int rmdr; | |
258 | FILE *file; | |
259 | { | |
260 | register c; | |
261 | register char *buf = obuf; | |
262 | ||
263 | while (--rmdr > 0 && (c = getc(file)) != 0 && c != EOF) | |
264 | *buf++ = c; | |
265 | *buf++ = 0; | |
266 | getc(file); | |
267 | return ((feof(file) || ferror(file)) ? NULL : 1); | |
268 | } |