Major coreutils update.

This commit is contained in:
Manuel Novoa III
2003-03-19 09:13:01 +00:00
parent e01f9662a5
commit cad5364599
295 changed files with 6944 additions and 5570 deletions

View File

@@ -1,9 +1,8 @@
/* vi: set sw=4 ts=4: */
/*
* Mini head implementation for busybox
* head implementation for busybox
*
* Copyright (C) 1999 by Lineo, inc. and John Beppu
* Copyright (C) 1999,2000,2001 by John Beppu <beppu@codepoet.org>
* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -21,82 +20,119 @@
*
*/
/* BB_AUDIT SUSv3 compliant */
/* BB_AUDIT GNU compatible -c, -q, and -v options in 'fancy' configuration. */
/* http://www.opengroup.org/onlinepubs/007904975/utilities/head.html */
#include <stdio.h>
#include <getopt.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <ctype.h>
#include <unistd.h>
#include "busybox.h"
static int head(int len, FILE *fp)
{
int i;
char *input;
static const char head_opts[] =
"n:"
#ifdef CONFIG_FEATURE_FANCY_HEAD
"c:qv"
#endif
;
for (i = 0; i < len; i++) {
if ((input = get_line_from_file(fp)) == NULL)
break;
fputs(input, stdout);
free(input);
}
return 0;
}
static const char header_fmt_str[] = "\n==> %s <==\n";
/* BusyBoxed head(1) */
int head_main(int argc, char **argv)
{
unsigned long count = 10;
unsigned long i;
#ifdef CONFIG_FEATURE_FANCY_HEAD
int count_bytes = 0;
int header_threshhold = 1;
#endif
FILE *fp;
int need_headers, opt, len = 10, status = EXIT_SUCCESS;
const char *fmt;
char *p;
int opt;
int c;
int retval = EXIT_SUCCESS;
if (( argc >= 2 ) && ( argv [1][0] == '-' ) && isdigit ( argv [1][1] )) {
len = atoi ( &argv [1][1] );
optind = 2;
/* Allow legacy syntax of an initial numeric option without -n. */
if ((argc > 1) && (argv[1][0] == '-')
/* && (isdigit)(argv[1][1]) */
&& (((unsigned int)(argv[1][1] - '0')) <= 9)
) {
--argc;
++argv;
p = (*argv) + 1;
goto GET_COUNT;
}
/* parse argv[] */
while ((opt = getopt(argc, argv, "n:")) > 0) {
switch (opt) {
case 'n':
len = atoi(optarg);
if (len >= 0)
while ((opt = getopt(argc, argv, head_opts)) > 0) {
switch(opt) {
#ifdef CONFIG_FEATURE_FANCY_HEAD
case 'q':
header_threshhold = INT_MAX;
break;
/* fallthrough */
default:
show_usage();
case 'v':
header_threshhold = -1;
break;
case 'c':
count_bytes = 1;
/* fall through */
#endif
case 'n':
p = optarg;
GET_COUNT:
count = bb_xgetularg10(p);
break;
default:
bb_show_usage();
}
}
/* get rest of argv[] or stdin if nothing's left */
if (argv[optind] == NULL) {
head(len, stdin);
return status;
}
need_headers = optind != (argc - 1);
while (argv[optind]) {
if (strcmp(argv[optind], "-") == 0) {
fp = stdin;
argv[optind] = "standard input";
} else {
if ((fp = wfopen(argv[optind], "r")) == NULL)
status = EXIT_FAILURE;
}
if (fp) {
if (need_headers) {
printf("==> %s <==\n", argv[optind]);
}
head(len, fp);
if (ferror(fp)) {
perror_msg("%s", argv[optind]);
status = EXIT_FAILURE;
}
if (optind < argc - 1)
putchar('\n');
if (fp != stdin)
fclose(fp);
}
optind++;
argv += optind;
if (!*argv) {
*--argv = "-";
}
return status;
fmt = header_fmt_str + 1;
#ifdef CONFIG_FEATURE_FANCY_HEAD
if (argc - optind <= header_threshhold) {
header_threshhold = 0;
}
#else
if (argc <= optind + 1) {
fmt += 11;
}
/* Now define some things here to avoid #ifdefs in the code below.
* These should optimize out of the if conditions below. */
#define header_threshhold 1
#define count_bytes 0
#endif
do {
if ((fp = bb_wfopen_input(*argv)) != NULL) {
if (fp == stdin) {
*argv = (char *) bb_msg_standard_input;
}
if (header_threshhold) {
bb_printf(fmt, *argv);
}
i = count;
while (i && ((c = getc(fp)) != EOF)) {
if (count_bytes || (c == '\n')) {
--i;
}
putchar(c);
}
if (bb_fclose_nonstdin(fp)) {
bb_perror_msg("%s", *argv); /* Avoid multibyte problems. */
retval = EXIT_FAILURE;
}
bb_xferror_stdout();
}
fmt = header_fmt_str;
} while (*++argv);
bb_fflush_stdout_and_exit(retval);
}