#include <stdio.h>
#include <ctype.h>
#include <../src/epaths.h>
#define BUFSIZE 80
#define SEP '\0'
#ifndef YOW_FILE
#define YOW_FILE "yow.lines"
#endif
#ifdef MSDOS
#define rootrelativepath(rel) \
({\
static char res[BUFSIZE], *p;\
strcpy (res, argv[0]);\
p = res + strlen (res);\
while (p != res && *p != '/' && *p != '\\' && *p != ':') p--;\
strcpy (p + 1, "../");\
strcpy (p + 4, rel);\
&res;})
#endif
char *malloc(), *realloc();
void yow();
void setup_yow();
int
main (argc, argv)
int argc;
char *argv[];
{
FILE *fp;
char file[BUFSIZ];
if (argc > 2 && !strcmp (argv[1], "-f"))
strcpy (file, argv[2]);
else
#ifdef vms
sprintf (file, "%s%s", PATH_DATA, YOW_FILE);
#else
sprintf (file, "%s/%s", PATH_DATA, YOW_FILE);
#endif
if ((fp = fopen(file, "r")) == NULL) {
fprintf(stderr, "yow: ");
perror(file);
exit(1);
}
srand((int) (getpid() + time((long *) 0)));
setup_yow(fp);
yow(fp);
fclose(fp);
return 0;
}
static long len = -1;
static long header_len;
#define AVG_LEN 40
void
setup_yow(fp)
FILE *fp;
{
int c;
while ((c = getc(fp)) != SEP) {
if (c == EOF) {
fprintf(stderr, "yow: file contains no separators\n");
exit(2);
}
}
header_len = ftell(fp);
if (header_len > AVG_LEN)
header_len -= AVG_LEN;
if (fseek(fp, 0L, 2) == -1) {
perror("yow");
exit(1);
}
len = ftell(fp) - header_len;
}
void
yow (fp)
FILE *fp;
{
long offset;
int c, i = 0;
char *buf;
unsigned int bufsize;
offset = rand() % len + header_len;
if (fseek(fp, offset, 0) == -1) {
perror("yow");
exit(1);
}
while ((c = getc(fp)) != SEP)
if (c == EOF) {
yow(fp);
return;
}
while (isspace(c = getc(fp)))
;
if (c == EOF) {
yow(fp);
return;
}
bufsize = BUFSIZE;
buf = malloc(bufsize);
if (buf == (char *)0) {
fprintf(stderr, "yow: virtual memory exhausted\n");
exit (3);
}
buf[i++] = c;
while ((c = getc(fp)) != SEP && c != EOF) {
buf[i++] = c;
if (i == bufsize-1) {
bufsize *= 2;
buf = realloc(buf, bufsize);
if (buf == (char *)0) {
fprintf(stderr, "yow: virtual memory exhausted\n");
exit (3);
}
}
}
buf[i++] = 0;
printf("%s\n", buf);
}