diff options
Diffstat (limited to 'usr.bin/asa/asa.c')
| -rw-r--r-- | usr.bin/asa/asa.c | 102 |
1 files changed, 46 insertions, 56 deletions
diff --git a/usr.bin/asa/asa.c b/usr.bin/asa/asa.c index 757278442a52..9839dbf8a722 100644 --- a/usr.bin/asa/asa.c +++ b/usr.bin/asa/asa.c @@ -1,4 +1,4 @@ -/* $NetBSD: asa.c,v 1.11 1997/09/20 14:55:00 lukem Exp $ */ +/* $NetBSD: asa.c,v 1.17 2016/09/05 00:40:28 sevan Exp $ */ /*- * SPDX-License-Identifier: BSD-4-Clause @@ -32,13 +32,8 @@ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ -#include <sys/cdefs.h> -#if 0 -#ifndef lint -__RCSID("$NetBSD: asa.c,v 1.11 1997/09/20 14:55:00 lukem Exp $"); -#endif -#endif #include <err.h> +#include <stdbool.h> #include <stdio.h> #include <stdlib.h> #include <string.h> @@ -50,38 +45,33 @@ static void usage(void) __dead2; int main(int argc, char *argv[]) { - int ch, exval; FILE *fp; - const char *fn; + int ch, exval; while ((ch = getopt(argc, argv, "")) != -1) { switch (ch) { - case '?': default: usage(); - /*NOTREACHED*/ } } argc -= optind; argv += optind; exval = 0; - if (argc == 0) + if (*argv == NULL) { asa(stdin); - else { - while ((fn = *argv++) != NULL) { - if (strcmp(fn, "-") == 0) { + } else { + do { + if (strcmp(*argv, "-") == 0) { asa(stdin); + } else if ((fp = fopen(*argv, "r")) == NULL) { + warn("%s", *argv); + exval = 1; } else { - if ((fp = fopen(fn, "r")) == NULL) { - warn("%s", fn); - exval = 1; - continue; - } asa(fp); fclose(fp); } - } + } while (*++argv != NULL); } if (fflush(stdout) != 0) @@ -93,7 +83,6 @@ main(int argc, char *argv[]) static void usage(void) { - fprintf(stderr, "usage: asa [file ...]\n"); exit(1); } @@ -101,52 +90,53 @@ usage(void) static void asa(FILE *f) { - size_t len; char *buf; + size_t len; + bool eol = false; - if ((buf = fgetln(f, &len)) != NULL) { - if (buf[len - 1] == '\n') - buf[--len] = '\0'; - /* special case the first line */ + while ((buf = fgetln(f, &len)) != NULL) { + /* in all cases but '+', terminate previous line, if any */ + if (buf[0] != '+' && eol) + putchar('\n'); + /* examine and translate the control character */ switch (buf[0]) { + default: + /* + * “It is suggested that implementations treat + * characters other than 0, 1, and '+' as <space> + * in the absence of any compelling reason to do + * otherwise” (POSIX.1-2017) + */ + case ' ': + /* nothing */ + break; case '0': putchar('\n'); break; case '1': putchar('\f'); break; - } - - if (len > 1 && buf[0] && buf[1]) - printf("%.*s", (int)(len - 1), buf + 1); - - while ((buf = fgetln(f, &len)) != NULL) { - if (buf[len - 1] == '\n') - buf[--len] = '\0'; - switch (buf[0]) { - default: - case ' ': - putchar('\n'); - break; - case '0': - putchar('\n'); - putchar('\n'); - break; - case '1': - putchar('\f'); - break; - case '+': + case '+': + /* + * “If the '+' is the first character in the + * input, it shall be equivalent to <space>.” + * (POSIX.1-2017) + */ + if (eol) putchar('\r'); - break; - } - - if (len > 1 && buf[0] && buf[1]) - printf("%.*s", (int)(len - 1), buf + 1); + break; } - - putchar('\n'); + /* trim newline if there is one */ + if ((eol = (buf[len - 1] == '\n'))) + --len; + /* print the rest of the input line */ + if (len > 1 && buf[0] && buf[1]) + fwrite(buf + 1, 1, len - 1, stdout); } - + /* terminate the last line, if any */ + if (eol) + putchar('\n'); + /* check for output errors */ if (ferror(stdout) != 0) err(1, "stdout"); } |