Annotation of src/usr.bin/mkstr/mkstr.c, Revision 1.1
1.1 ! deraadt 1: /* $NetBSD: mkstr.c,v 1.4 1995/09/28 06:22:20 tls 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. All advertising materials mentioning features or use of this software
! 16: * must display the following acknowledgement:
! 17: * This product includes software developed by the University of
! 18: * California, Berkeley and its contributors.
! 19: * 4. Neither the name of the University nor the names of its contributors
! 20: * may be used to endorse or promote products derived from this software
! 21: * without specific prior written permission.
! 22: *
! 23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 33: * SUCH DAMAGE.
! 34: */
! 35:
! 36: #ifndef lint
! 37: static char copyright[] =
! 38: "@(#) Copyright (c) 1980, 1993\n\
! 39: The Regents of the University of California. All rights reserved.\n";
! 40: #endif /* not lint */
! 41:
! 42: #ifndef lint
! 43: #if 0
! 44: static char sccsid[] = "@(#)mkstr.c 8.1 (Berkeley) 6/6/93";
! 45: #else
! 46: static char rcsid[] = "$NetBSD: mkstr.c,v 1.4 1995/09/28 06:22:20 tls Exp $";
! 47: #endif
! 48: #endif /* not lint */
! 49:
! 50: #include <stdio.h>
! 51: #include <stdlib.h>
! 52: #include <string.h>
! 53:
! 54: #define ungetchar(c) ungetc(c, stdin)
! 55:
! 56: /*
! 57: * mkstr - create a string error message file by massaging C source
! 58: *
! 59: * Bill Joy UCB August 1977
! 60: *
! 61: * Modified March 1978 to hash old messages to be able to recompile
! 62: * without addding messages to the message file (usually)
! 63: *
! 64: * Based on an earlier program conceived by Bill Joy and Chuck Haley
! 65: *
! 66: * Program to create a string error message file
! 67: * from a group of C programs. Arguments are the name
! 68: * of the file where the strings are to be placed, the
! 69: * prefix of the new files where the processed source text
! 70: * is to be placed, and the files to be processed.
! 71: *
! 72: * The program looks for 'error("' in the source stream.
! 73: * Whenever it finds this, the following characters from the '"'
! 74: * to a '"' are replaced by 'seekpt' where seekpt is a
! 75: * pointer into the error message file.
! 76: * If the '(' is not immediately followed by a '"' no change occurs.
! 77: *
! 78: * The optional '-' causes strings to be added at the end of the
! 79: * existing error message file for recompilation of single routines.
! 80: */
! 81:
! 82:
! 83: FILE *mesgread, *mesgwrite;
! 84: char *progname;
! 85: char usagestr[] = "usage: %s [ - ] mesgfile prefix file ...\n";
! 86: char name[100], *np;
! 87:
! 88: main(argc, argv)
! 89: int argc;
! 90: char *argv[];
! 91: {
! 92: char addon = 0;
! 93:
! 94: argc--, progname = *argv++;
! 95: if (argc > 1 && argv[0][0] == '-')
! 96: addon++, argc--, argv++;
! 97: if (argc < 3)
! 98: fprintf(stderr, usagestr, progname), exit(1);
! 99: mesgwrite = fopen(argv[0], addon ? "a" : "w");
! 100: if (mesgwrite == NULL)
! 101: perror(argv[0]), exit(1);
! 102: mesgread = fopen(argv[0], "r");
! 103: if (mesgread == NULL)
! 104: perror(argv[0]), exit(1);
! 105: inithash();
! 106: argc--, argv++;
! 107: strcpy(name, argv[0]);
! 108: np = name + strlen(name);
! 109: argc--, argv++;
! 110: do {
! 111: strcpy(np, argv[0]);
! 112: if (freopen(name, "w", stdout) == NULL)
! 113: perror(name), exit(1);
! 114: if (freopen(argv[0], "r", stdin) == NULL)
! 115: perror(argv[0]), exit(1);
! 116: process();
! 117: argc--, argv++;
! 118: } while (argc > 0);
! 119: exit(0);
! 120: }
! 121:
! 122: process()
! 123: {
! 124: register char *cp;
! 125: register c;
! 126:
! 127: for (;;) {
! 128: c = getchar();
! 129: if (c == EOF)
! 130: return;
! 131: if (c != 'e') {
! 132: putchar(c);
! 133: continue;
! 134: }
! 135: if (match("error(")) {
! 136: printf("error(");
! 137: c = getchar();
! 138: if (c != '"')
! 139: putchar(c);
! 140: else
! 141: copystr();
! 142: }
! 143: }
! 144: }
! 145:
! 146: match(ocp)
! 147: char *ocp;
! 148: {
! 149: register char *cp;
! 150: register c;
! 151:
! 152: for (cp = ocp + 1; *cp; cp++) {
! 153: c = getchar();
! 154: if (c != *cp) {
! 155: while (ocp < cp)
! 156: putchar(*ocp++);
! 157: ungetchar(c);
! 158: return (0);
! 159: }
! 160: }
! 161: return (1);
! 162: }
! 163:
! 164: copystr()
! 165: {
! 166: register c, ch;
! 167: char buf[512];
! 168: register char *cp = buf;
! 169:
! 170: for (;;) {
! 171: c = getchar();
! 172: if (c == EOF)
! 173: break;
! 174: switch (c) {
! 175:
! 176: case '"':
! 177: *cp++ = 0;
! 178: goto out;
! 179: case '\\':
! 180: c = getchar();
! 181: switch (c) {
! 182:
! 183: case 'b':
! 184: c = '\b';
! 185: break;
! 186: case 't':
! 187: c = '\t';
! 188: break;
! 189: case 'r':
! 190: c = '\r';
! 191: break;
! 192: case 'n':
! 193: c = '\n';
! 194: break;
! 195: case '\n':
! 196: continue;
! 197: case 'f':
! 198: c = '\f';
! 199: break;
! 200: case '0':
! 201: c = 0;
! 202: break;
! 203: case '\\':
! 204: break;
! 205: default:
! 206: if (!octdigit(c))
! 207: break;
! 208: c -= '0';
! 209: ch = getchar();
! 210: if (!octdigit(ch))
! 211: break;
! 212: c <<= 7, c += ch - '0';
! 213: ch = getchar();
! 214: if (!octdigit(ch))
! 215: break;
! 216: c <<= 3, c+= ch - '0', ch = -1;
! 217: break;
! 218: }
! 219: }
! 220: *cp++ = c;
! 221: }
! 222: out:
! 223: *cp = 0;
! 224: printf("%d", hashit(buf, 1, NULL));
! 225: }
! 226:
! 227: octdigit(c)
! 228: char c;
! 229: {
! 230:
! 231: return (c >= '0' && c <= '7');
! 232: }
! 233:
! 234: inithash()
! 235: {
! 236: char buf[512];
! 237: int mesgpt = 0;
! 238:
! 239: rewind(mesgread);
! 240: while (fgetNUL(buf, sizeof buf, mesgread) != NULL) {
! 241: hashit(buf, 0, mesgpt);
! 242: mesgpt += strlen(buf) + 2;
! 243: }
! 244: }
! 245:
! 246: #define NBUCKETS 511
! 247:
! 248: struct hash {
! 249: long hval;
! 250: unsigned hpt;
! 251: struct hash *hnext;
! 252: } *bucket[NBUCKETS];
! 253:
! 254: hashit(str, really, fakept)
! 255: char *str;
! 256: char really;
! 257: unsigned fakept;
! 258: {
! 259: int i;
! 260: register struct hash *hp;
! 261: char buf[512];
! 262: long hashval = 0;
! 263: register char *cp;
! 264:
! 265: if (really)
! 266: fflush(mesgwrite);
! 267: for (cp = str; *cp;)
! 268: hashval = (hashval << 1) + *cp++;
! 269: i = hashval % NBUCKETS;
! 270: if (i < 0)
! 271: i += NBUCKETS;
! 272: if (really != 0)
! 273: for (hp = bucket[i]; hp != 0; hp = hp->hnext)
! 274: if (hp->hval == hashval) {
! 275: fseek(mesgread, (long) hp->hpt, 0);
! 276: fgetNUL(buf, sizeof buf, mesgread);
! 277: /*
! 278: fprintf(stderr, "Got (from %d) %s\n", hp->hpt, buf);
! 279: */
! 280: if (strcmp(buf, str) == 0)
! 281: break;
! 282: }
! 283: if (!really || hp == 0) {
! 284: hp = (struct hash *) calloc(1, sizeof *hp);
! 285: hp->hnext = bucket[i];
! 286: hp->hval = hashval;
! 287: hp->hpt = really ? ftell(mesgwrite) : fakept;
! 288: if (really) {
! 289: fwrite(str, sizeof (char), strlen(str) + 1, mesgwrite);
! 290: fwrite("\n", sizeof (char), 1, mesgwrite);
! 291: }
! 292: bucket[i] = hp;
! 293: }
! 294: /*
! 295: fprintf(stderr, "%s hashed to %ld at %d\n", str, hp->hval, hp->hpt);
! 296: */
! 297: return (hp->hpt);
! 298: }
! 299:
! 300: #include <sys/types.h>
! 301: #include <sys/stat.h>
! 302:
! 303: fgetNUL(obuf, rmdr, file)
! 304: char *obuf;
! 305: register int rmdr;
! 306: FILE *file;
! 307: {
! 308: register c;
! 309: register char *buf = obuf;
! 310:
! 311: while (--rmdr > 0 && (c = getc(file)) != 0 && c != EOF)
! 312: *buf++ = c;
! 313: *buf++ = 0;
! 314: getc(file);
! 315: return ((feof(file) || ferror(file)) ? NULL : 1);
! 316: }
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