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NetBSD/games/fortune/strfile/strfile.c

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/* $NetBSD: strfile.c,v 1.28 2008/09/29 12:30:12 agc Exp $ */
/*-
* Copyright (c) 1989, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ken Arnold.
*
* 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.
*/
#ifdef __NetBSD__
#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1989, 1993\
The Regents of the University of California. All rights reserved.");
#endif /* not lint */
#ifndef lint
#if 0
static char sccsid[] = "@(#)strfile.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: strfile.c,v 1.28 2008/09/29 12:30:12 agc Exp $");
#endif
#endif /* not lint */
#endif /* __NetBSD__ */
/* n.b.: this file is used at build-time - i.e. during build.sh. */
# include <sys/types.h>
# include <sys/param.h>
# include <ctype.h>
# include <stdio.h>
# include <stdlib.h>
# include <string.h>
# include <time.h>
# include <unistd.h>
# include <inttypes.h>
# include "strfile.h"
# ifndef MAXPATHLEN
# define MAXPATHLEN 1024
# endif /* MAXPATHLEN */
static uint32_t h2nl(uint32_t h);
static void getargs(int argc, char **argv);
static void usage(void);
static void die(const char *str);
static void dieperror(const char *fmt, char *file);
static void add_offset(FILE *fp, off_t off);
static void do_order(void);
static int cmp_str(const void *vp1, const void *vp2);
static void randomize(void);
static void fwrite_be_offt(off_t off, FILE *f);
static uint32_t
h2nl(uint32_t h)
{
unsigned char c[4];
uint32_t rv;
c[0] = (h >> 24) & 0xff;
c[1] = (h >> 16) & 0xff;
c[2] = (h >> 8) & 0xff;
c[3] = (h >> 0) & 0xff;
memcpy(&rv, c, sizeof rv);
return (rv);
}
/*
* This program takes a file composed of strings separated by
* lines starting with two consecutive delimiting character (default
* character is '%') and creates another file which consists of a table
* describing the file (structure from "strfile.h"), a table of seek
* pointers to the start of the strings, and the strings, each terminated
* by a null byte. Usage:
*
* % strfile [-iorsx] [ -cC ] sourcefile [ datafile ]
*
* c - Change delimiting character from '%' to 'C'
* s - Silent. Give no summary of data processed at the end of
* the run.
* o - order the strings in alphabetic order
* i - if ordering, ignore case
* r - randomize the order of the strings
* x - set rotated bit
*
* Ken Arnold Sept. 7, 1978 --
*
* Added ordering options.
*/
# define TRUE 1
# define FALSE 0
# define STORING_PTRS (Oflag || Rflag)
# define CHUNKSIZE 512
# define ALLOC(ptr,sz) do { \
if (ptr == NULL) \
ptr = malloc(CHUNKSIZE * sizeof *ptr); \
else if (((sz) + 1) % CHUNKSIZE == 0) \
ptr = realloc(ptr, ((sz) + CHUNKSIZE) * sizeof *ptr); \
if (ptr == NULL) \
die("out of space"); \
} while (0)
typedef struct {
char first;
off_t pos;
} STR;
char *Infile = NULL, /* input file name */
Outfile[MAXPATHLEN] = "", /* output file name */
Delimch = '%'; /* delimiting character */
int Sflag = FALSE; /* silent run flag */
int Oflag = FALSE; /* ordering flag */
int Iflag = FALSE; /* ignore case flag */
int Rflag = FALSE; /* randomize order flag */
int Xflag = FALSE; /* set rotated bit */
long Num_pts = 0; /* number of pointers/strings */
off_t *Seekpts;
FILE *Sort_1, *Sort_2; /* pointers for sorting */
STRFILE Tbl; /* statistics table */
STR *Firstch; /* first chars of each string */
#ifdef __GNUC__
#define NORETURN __dead
#else
#define NORETURN
#endif
#ifndef __dead /* not NetBSD, presumably */
#define __dead ;
#endif
void add_offset(FILE *, off_t);
int cmp_str(const void *, const void *);
void die(const char *) NORETURN;
void dieperror(const char *, char *) NORETURN;
void do_order(void);
void fwrite_be_offt(off_t, FILE *);
void getargs(int, char *[]);
int main(int, char *[]);
void randomize(void);
void usage(void) NORETURN;
/*
* main:
* Drive the sucker. There are two main modes -- either we store
* the seek pointers, if the table is to be sorted or randomized,
* or we write the pointer directly to the file, if we are to stay
* in file order. If the former, we allocate and re-allocate in
* CHUNKSIZE blocks; if the latter, we just write each pointer,
* and then seek back to the beginning to write in the table.
*/
int
main(int ac, char **av)
{
char *sp, dc;
FILE *inf, *outf;
off_t last_off, length, pos, *p;
int first, cnt;
char *nsp;
STR *fp;
static char string[257];
/* sanity test */
if (sizeof(uint32_t) != 4)
die("sizeof(uint32_t) != 4");
getargs(ac, av); /* evalute arguments */
dc = Delimch;
if ((inf = fopen(Infile, "r")) == NULL)
dieperror("open `%s'", Infile);
if ((outf = fopen(Outfile, "w")) == NULL)
dieperror("open `%s'", Outfile);
if (!STORING_PTRS)
(void) fseek(outf, sizeof Tbl, SEEK_SET);
/*
* Write the strings onto the file
*/
Tbl.str_longlen = 0;
Tbl.str_shortlen = (unsigned int) 0x7fffffff;
Tbl.str_delim = dc;
Tbl.str_version = VERSION;
first = Oflag;
add_offset(outf, ftell(inf));
last_off = 0;
do {
sp = fgets(string, 256, inf);
if (sp == NULL || (sp[0] == dc && sp[1] == '\n')) {
pos = ftell(inf);
length = pos - last_off - (sp ? strlen(sp) : 0);
last_off = pos;
if (!length)
continue;
add_offset(outf, pos);
if ((off_t)Tbl.str_longlen < length)
Tbl.str_longlen = length;
if ((off_t)Tbl.str_shortlen > length)
Tbl.str_shortlen = length;
first = Oflag;
}
else if (first) {
for (nsp = sp; !isalnum((unsigned char)*nsp); nsp++)
continue;
ALLOC(Firstch, Num_pts);
fp = &Firstch[Num_pts - 1];
if (Iflag && isupper((unsigned char)*nsp))
fp->first = tolower((unsigned char)*nsp);
else
fp->first = *nsp;
fp->pos = Seekpts[Num_pts - 1];
first = FALSE;
}
} while (sp != NULL);
/*
* write the tables in
*/
(void) fclose(inf);
if (Oflag)
do_order();
else if (Rflag)
randomize();
if (Xflag)
Tbl.str_flags |= STR_ROTATED;
if (!Sflag) {
printf("\"%s\" created\n", Outfile);
if (Num_pts == 2)
puts("There was 1 string");
else
printf("There were %d strings\n", (int)(Num_pts - 1));
printf("Longest string: %lu byte%s\n", (unsigned long)Tbl.str_longlen,
Tbl.str_longlen == 1 ? "" : "s");
printf("Shortest string: %lu byte%s\n", (unsigned long)Tbl.str_shortlen,
Tbl.str_shortlen == 1 ? "" : "s");
}
(void) fseek(outf, (off_t) 0, SEEK_SET);
Tbl.str_version = h2nl(Tbl.str_version);
Tbl.str_numstr = h2nl(Num_pts - 1);
Tbl.str_longlen = h2nl(Tbl.str_longlen);
Tbl.str_shortlen = h2nl(Tbl.str_shortlen);
Tbl.str_flags = h2nl(Tbl.str_flags);
(void) fwrite((char *) &Tbl, sizeof Tbl, 1, outf);
if (STORING_PTRS) {
for (p = Seekpts, cnt = Num_pts; cnt--; ++p)
fwrite_be_offt(*p, outf);
}
fflush(outf);
if (ferror(outf))
dieperror("fwrite %s", Outfile);
(void) fclose(outf);
exit(0);
}
/*
* This routine evaluates arguments from the command line
*/
static void
getargs(int argc, char **argv)
{
int ch;
extern int optind;
extern char *optarg;
while ((ch = getopt(argc, argv, "c:iorsx")) != -1)
switch(ch) {
case 'c': /* new delimiting char */
Delimch = *optarg;
if (!isascii(Delimch)) {
printf("bad delimiting character: '\\%o\n'",
Delimch);
}
break;
case 'i': /* ignore case in ordering */
Iflag++;
break;
case 'o': /* order strings */
Oflag++;
break;
case 'r': /* randomize pointers */
Rflag++;
break;
case 's': /* silent */
Sflag++;
break;
case 'x': /* set the rotated bit */
Xflag++;
break;
case '?':
default:
usage();
}
argv += optind;
if (*argv) {
Infile = *argv;
if (*++argv)
(void) strcpy(Outfile, *argv);
}
if (!Infile) {
puts("No input file name");
usage();
}
if (*Outfile == '\0') {
(void) strcpy(Outfile, Infile);
(void) strcat(Outfile, ".dat");
}
}
static void
usage(void)
{
(void) fprintf(stderr,
"strfile [-iorsx] [-c char] sourcefile [datafile]\n");
exit(1);
}
static void
die(const char *str)
{
fprintf(stderr, "strfile: %s\n", str);
exit(1);
}
static void
dieperror(const char *fmt, char *file)
{
fprintf(stderr, "strfile: ");
fprintf(stderr, fmt, file);
fprintf(stderr, ": ");
perror(NULL);
exit(1);
}
/*
* add_offset:
* Add an offset to the list, or write it out, as appropriate.
*/
static void
add_offset(FILE *fp, off_t off)
{
if (!STORING_PTRS) {
fwrite_be_offt(off, fp);
} else {
ALLOC(Seekpts, Num_pts + 1);
Seekpts[Num_pts] = off;
}
Num_pts++;
}
/*
* do_order:
* Order the strings alphabetically (possibly ignoring case).
*/
static void
do_order(void)
{
int i;
off_t *lp;
STR *fp;
Sort_1 = fopen(Infile, "r");
Sort_2 = fopen(Infile, "r");
qsort((char *) Firstch, (int) Tbl.str_numstr, sizeof *Firstch, cmp_str);
i = Tbl.str_numstr;
lp = Seekpts;
fp = Firstch;
while (i--)
*lp++ = fp++->pos;
(void) fclose(Sort_1);
(void) fclose(Sort_2);
Tbl.str_flags |= STR_ORDERED;
}
static int
cmp_str(const void *vp1, const void *vp2)
{
const STR *p1, *p2;
int c1, c2;
int n1, n2;
p1 = (const STR *)vp1;
p2 = (const STR *)vp2;
# define SET_N(nf,ch) (nf = (ch == '\n'))
# define IS_END(ch,nf) (ch == Delimch && nf)
c1 = p1->first;
c2 = p2->first;
if (c1 != c2)
return c1 - c2;
(void) fseek(Sort_1, p1->pos, SEEK_SET);
(void) fseek(Sort_2, p2->pos, SEEK_SET);
n1 = FALSE;
n2 = FALSE;
while (!isalnum(c1 = getc(Sort_1)) && c1 != '\0')
SET_N(n1, c1);
while (!isalnum(c2 = getc(Sort_2)) && c2 != '\0')
SET_N(n2, c2);
while (!IS_END(c1, n1) && !IS_END(c2, n2)) {
if (Iflag) {
if (isupper(c1))
c1 = tolower(c1);
if (isupper(c2))
c2 = tolower(c2);
}
if (c1 != c2)
return c1 - c2;
SET_N(n1, c1);
SET_N(n2, c2);
c1 = getc(Sort_1);
c2 = getc(Sort_2);
}
if (IS_END(c1, n1))
c1 = 0;
if (IS_END(c2, n2))
c2 = 0;
return c1 - c2;
}
/*
* randomize:
* Randomize the order of the string table. We must be careful
* not to randomize across delimiter boundaries. All
* randomization is done within each block.
*/
static void
randomize(void)
{
int cnt, i;
off_t tmp;
off_t *sp;
srandom((int)(time((time_t *) NULL) + getpid()));
Tbl.str_flags |= STR_RANDOM;
cnt = Tbl.str_numstr;
/*
* move things around randomly
*/
for (sp = Seekpts; cnt > 0; cnt--, sp++) {
i = random() % cnt;
tmp = sp[0];
sp[0] = sp[i];
sp[i] = tmp;
}
}
/*
* fwrite_be_offt:
* Write out the off paramater as a 64 bit big endian number
*/
static void
fwrite_be_offt(off_t off, FILE *f)
{
int i;
unsigned char c[8];
for (i = 7; i >= 0; i--) {
c[i] = off & 0xff;
off >>= 8;
}
fwrite(c, sizeof(c), 1, f);
}
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