75 lines
1.1 KiB
C
75 lines
1.1 KiB
C
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/* See LICENSE file for copyright and license details. */
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include "text.h"
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#include "util.h"
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static void
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usage(void)
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{
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eprintf("usage: %s [file ...]\n", argv0);
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}
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static void
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rev(FILE *fp)
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{
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static char *line = NULL;
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static size_t size = 0;
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size_t i;
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ssize_t n;
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int lf;
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while ((n = getline(&line, &size, fp)) > 0) {
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lf = n && line[n - 1] == '\n';
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i = n -= lf;
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for (n = 0; i--;) {
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if ((line[i] & 0xC0) == 0x80) {
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n++;
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} else {
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fwrite(line + i, 1, n + 1, stdout);
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n = 0;
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}
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}
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if (n)
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fwrite(line, 1, n, stdout);
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if (lf)
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fputc('\n', stdout);
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}
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}
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int
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main(int argc, char *argv[])
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{
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FILE *fp;
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int ret = 0;
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ARGBEGIN {
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default:
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usage();
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} ARGEND
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if (!argc) {
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rev(stdin);
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} else {
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for (; *argv; argc--, argv++) {
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if (!strcmp(*argv, "-")) {
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*argv = "<stdin>";
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fp = stdin;
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} else if (!(fp = fopen(*argv, "r"))) {
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weprintf("fopen %s:", *argv);
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ret = 1;
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continue;
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}
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rev(fp);
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if (fp != stdin && fshut(fp, *argv))
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ret = 1;
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}
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}
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ret |= fshut(stdin, "<stdin>") | fshut(stdout, "<stdout>");
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return ret;
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}
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