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/* See LICENSE file for copyright and license details. */
#include <ctype.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "util.h"
static int base = 26, start = 'a';
static int
itostr(char *str, int x, int n)
{
str[n] = '\0';
while (n-- > 0) {
str[n] = start + (x % base);
x /= base;
}
return x ? -1 : 0;
}
static FILE *
nextfile(FILE *f, char *buf, int plen, int slen)
{
static int filecount = 0;
if (f)
fshut(f, "<file>");
if (itostr(buf + plen, filecount++, slen) < 0)
return NULL;
if (!(f = fopen(buf, "w")))
eprintf("'%s':", buf);
return f;
}
static void
usage(void)
{
eprintf("usage: %s [-a num] [-b num[k|m|g] | -l num] [-d] "
"[file [prefix]]\n", argv0);
}
int
main(int argc, char *argv[])
{
FILE *in = stdin, *out = NULL;
off_t size = 1000, n;
int ret = 0, ch, plen, slen = 2, always = 0;
char name[NAME_MAX + 1], *prefix = "x", *file = NULL;
ARGBEGIN {
case 'a':
slen = estrtonum(EARGF(usage()), 0, INT_MAX);
break;
case 'b':
always = 1;
if ((size = parseoffset(EARGF(usage()))) < 0)
return 1;
if (!size)
eprintf("size needs to be positive\n");
break;
case 'd':
base = 10;
start = '0';
break;
case 'l':
always = 0;
size = estrtonum(EARGF(usage()), 1, MIN(LLONG_MAX, SSIZE_MAX));
break;
default:
usage();
} ARGEND
if (*argv)
file = *argv++;
if (*argv)
prefix = *argv++;
if (*argv)
usage();
plen = strlen(prefix);
if (plen + slen > NAME_MAX)
eprintf("names cannot exceed %d bytes\n", NAME_MAX);
estrlcpy(name, prefix, sizeof(name));
if (file && strcmp(file, "-")) {
if (!(in = fopen(file, "r")))
eprintf("fopen %s:", file);
}
n = 0;
while ((ch = getc(in)) != EOF) {
if (!out || n >= size) {
if (!(out = nextfile(out, name, plen, slen)))
eprintf("fopen: %s:", name);
n = 0;
}
n += (always || ch == '\n');
putc(ch, out);
}
ret |= (in != stdin) && fshut(in, "<infile>");
ret |= out && (out != stdout) && fshut(out, "<outfile>");
ret |= fshut(stdin, "<stdin>") | fshut(stdout, "<stdout>");
return ret;
}