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/* See LICENSE file for copyright and license details. */
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "text.h"
#include "util.h"
static void
usage(void)
{
eprintf("usage: %s [file ...]\n", argv0);
}
static void
rev(FILE *fp)
{
static char *line = NULL;
static size_t size = 0;
size_t i;
ssize_t n;
int lf;
while ((n = getline(&line, &size, fp)) > 0) {
lf = n && line[n - 1] == '\n';
i = n -= lf;
for (n = 0; i--;) {
if (UTF8_POINT(line[i])) {
n++;
} else {
fwrite(line + i, 1, n + 1, stdout);
n = 0;
}
}
if (n)
fwrite(line, 1, n, stdout);
if (lf)
fputc('\n', stdout);
}
}
int
main(int argc, char *argv[])
{
FILE *fp;
int ret = 0;
ARGBEGIN {
default:
usage();
} ARGEND
if (!argc) {
rev(stdin);
} else {
for (; *argv; argc--, argv++) {
if (!strcmp(*argv, "-")) {
*argv = "<stdin>";
fp = stdin;
} else if (!(fp = fopen(*argv, "r"))) {
weprintf("fopen %s:", *argv);
ret = 1;
continue;
}
rev(fp);
if (fp != stdin && fshut(fp, *argv))
ret = 1;
}
}
ret |= fshut(stdin, "<stdin>") | fshut(stdout, "<stdout>");
return ret;
}
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