322 lines
7 KiB
C
322 lines
7 KiB
C
/* $NetBSD: mkstr.c,v 1.16 2012/03/20 20:34:58 matt Exp $ */
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/*
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* Copyright (c) 1980, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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__COPYRIGHT("@(#) Copyright (c) 1980, 1993\
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The Regents of the University of California. All rights reserved.");
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#endif /* not lint */
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)mkstr.c 8.1 (Berkeley) 6/6/93";
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#else
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__RCSID("$NetBSD: mkstr.c,v 1.16 2012/03/20 20:34:58 matt Exp $");
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#endif
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#endif /* not lint */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define ungetchar(c) ungetc(c, stdin)
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/*
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* mkstr - create a string error message file by massaging C source
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*
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* Bill Joy UCB August 1977
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*
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* Modified March 1978 to hash old messages to be able to recompile
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* without addding messages to the message file (usually)
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*
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* Based on an earlier program conceived by Bill Joy and Chuck Haley
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*
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* Program to create a string error message file
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* from a group of C programs. Arguments are the name
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* of the file where the strings are to be placed, the
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* prefix of the new files where the processed source text
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* is to be placed, and the files to be processed.
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*
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* The program looks for 'error("' in the source stream.
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* Whenever it finds this, the following characters from the '"'
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* to a '"' are replaced by 'seekpt' where seekpt is a
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* pointer into the error message file.
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* If the '(' is not immediately followed by a '"' no change occurs.
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*
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* The optional '-' causes strings to be added at the end of the
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* existing error message file for recompilation of single routines.
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*/
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FILE *mesgread, *mesgwrite;
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char *progname;
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const char usagestr[] = "usage: %s [ - ] mesgfile prefix file ...\n";
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char name[100], *np;
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void process(void);
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int main(int, char **);
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int match(const char *);
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int octdigit(char);
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void inithash(void);
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long hashit(const char *, char, long);
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void copystr(void);
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int fgetNUL(char *, int, FILE *);
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int
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main(int argc, char *argv[])
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{
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char addon = 0;
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argc--, progname = *argv++;
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if (argc > 1 && argv[0][0] == '-')
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addon++, argc--, argv++;
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if (argc < 3)
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fprintf(stderr, usagestr, progname), exit(1);
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mesgwrite = fopen(argv[0], addon ? "a" : "w");
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if (mesgwrite == NULL)
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perror(argv[0]), exit(1);
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mesgread = fopen(argv[0], "r");
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if (mesgread == NULL)
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perror(argv[0]), exit(1);
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inithash();
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argc--, argv++;
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strlcpy(name, argv[0], sizeof(name));
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np = name + strlen(name);
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argc--, argv++;
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do {
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strlcpy(np, argv[0], sizeof(name) - (np - name));
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if (freopen(name, "w", stdout) == NULL)
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perror(name), exit(1);
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if (freopen(argv[0], "r", stdin) == NULL)
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perror(argv[0]), exit(1);
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process();
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argc--, argv++;
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} while (argc > 0);
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exit(0);
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}
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void
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process(void)
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{
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int c;
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for (;;) {
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c = getchar();
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if (c == EOF)
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return;
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if (c != 'e') {
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putchar(c);
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continue;
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}
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if (match("error(")) {
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printf("error(");
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c = getchar();
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if (c != '"')
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putchar(c);
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else
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copystr();
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}
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}
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}
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int
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match(const char *ocp)
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{
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const char *cp;
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int c;
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for (cp = ocp + 1; *cp; cp++) {
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c = getchar();
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if (c != *cp) {
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while (ocp < cp)
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putchar(*ocp++);
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ungetchar(c);
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return (0);
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}
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}
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return (1);
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}
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void
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copystr(void)
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{
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int c, ch;
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char buf[512];
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char *cp = buf;
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for (;;) {
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c = getchar();
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if (c == EOF)
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break;
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switch (c) {
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case '"':
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*cp++ = 0;
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goto out;
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case '\\':
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c = getchar();
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switch (c) {
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case 'b':
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c = '\b';
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break;
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case 't':
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c = '\t';
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break;
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case 'r':
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c = '\r';
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break;
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case 'n':
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c = '\n';
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break;
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case '\n':
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continue;
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case 'f':
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c = '\f';
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break;
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case '0':
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c = 0;
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break;
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case '\\':
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break;
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default:
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if (!octdigit(c))
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break;
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c -= '0';
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ch = getchar();
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if (!octdigit(ch))
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break;
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c <<= 7, c += ch - '0';
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ch = getchar();
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if (!octdigit(ch))
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break;
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c <<= 3, c+= ch - '0', ch = -1;
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break;
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}
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}
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*cp++ = c;
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}
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out:
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*cp = 0;
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printf("%ld", hashit(buf, 1, 0));
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}
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int
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octdigit(char c)
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{
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return (c >= '0' && c <= '7');
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}
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void
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inithash(void)
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{
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char buf[512];
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long mesgpt = 0;
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rewind(mesgread);
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while (fgetNUL(buf, sizeof buf, mesgread) != 0) {
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hashit(buf, 0, mesgpt);
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mesgpt += strlen(buf) + 2;
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}
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}
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#define NBUCKETS 511
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struct hash {
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long hval;
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long hpt;
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struct hash *hnext;
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} *bucket[NBUCKETS];
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long
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hashit(const char *str, char really, long fakept)
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{
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int i;
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struct hash *hp;
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char buf[512];
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long hashval = 0;
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const char *cp;
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#ifdef __GNUC__
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hp = NULL; /* XXX gcc */
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#endif
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if (really)
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fflush(mesgwrite);
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for (cp = str; *cp;)
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hashval = (hashval << 1) + *cp++;
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i = hashval % NBUCKETS;
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if (i < 0)
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i += NBUCKETS;
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if (really != 0)
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for (hp = bucket[i]; hp != 0; hp = hp->hnext)
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if (hp->hval == hashval) {
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fseek(mesgread, hp->hpt, 0);
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fgetNUL(buf, sizeof buf, mesgread);
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/*
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fprintf(stderr, "Got (from %ld) %s\n", hp->hpt, buf);
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*/
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if (strcmp(buf, str) == 0)
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break;
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}
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if (!really || hp == 0) {
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hp = (struct hash *) calloc(1, sizeof *hp);
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hp->hnext = bucket[i];
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hp->hval = hashval;
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hp->hpt = really ? ftell(mesgwrite) : fakept;
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if (really) {
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fwrite(str, sizeof (char), strlen(str) + 1, mesgwrite);
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fwrite("\n", sizeof (char), 1, mesgwrite);
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}
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bucket[i] = hp;
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}
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/*
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fprintf(stderr, "%s hashed to %ld at %ld\n", str, hp->hval, hp->hpt);
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*/
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return (hp->hpt);
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}
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#include <sys/types.h>
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#include <sys/stat.h>
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int
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fgetNUL(char *obuf, int rmdr, FILE *file)
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{
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int c;
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char *buf = obuf;
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while (--rmdr > 0 && (c = getc(file)) != 0 && c != EOF)
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*buf++ = c;
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*buf++ = 0;
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getc(file);
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return ((feof(file) || ferror(file)) ? 0 : 1);
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}
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