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freebsd/usr.bin/mkstr/mkstr.c
Pedro F. Giffuni 8a16b7a18f General further adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.
2017-11-20 19:49:47 +00:00

336 lines
7.2 KiB
C

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