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