137 lines
3.0 KiB
C
137 lines
3.0 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* Mini tee implementation for busybox
|
|
*
|
|
*
|
|
* Copyright (C) 1999,2000 by Lineo, inc.
|
|
* Written by John Beppu <beppu@lineo.com>
|
|
*
|
|
* 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
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
*/
|
|
|
|
#include "internal.h"
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
|
|
static const char tee_usage[] =
|
|
"tee [OPTION]... [FILE]...\n"
|
|
#ifndef BB_FEATURE_TRIVIAL_HELP
|
|
"\nCopy standard input to each FILE, and also to standard output.\n\n"
|
|
"Options:\n" "\t-a\tappend to the given FILEs, do not overwrite\n"
|
|
#if 0
|
|
"\t-i\tignore interrupt signals\n"
|
|
#endif
|
|
#endif
|
|
;
|
|
|
|
|
|
/* FileList _______________________________________________________________ */
|
|
|
|
#define FL_MAX 1024
|
|
static FILE **FileList;
|
|
static int FL_end;
|
|
|
|
typedef void (FL_Function) (FILE * file, char c);
|
|
|
|
|
|
/* apply a function to everything in FileList */
|
|
static void FL_apply(FL_Function * f, char c)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i <= FL_end; i++) {
|
|
f(FileList[i], c);
|
|
}
|
|
}
|
|
|
|
/* FL_Function for writing to files*/
|
|
static void tee_fwrite(FILE * file, char c)
|
|
{
|
|
fputc(c, file);
|
|
}
|
|
|
|
/* FL_Function for closing files */
|
|
static void tee_fclose(FILE * file, char c)
|
|
{
|
|
fclose(file);
|
|
}
|
|
|
|
/* ________________________________________________________________________ */
|
|
|
|
/* BusyBoxed tee(1) */
|
|
int tee_main(int argc, char **argv)
|
|
{
|
|
int i;
|
|
char c;
|
|
char opt;
|
|
char opt_fopen[2] = "w";
|
|
FILE *file;
|
|
|
|
/* parse argv[] */
|
|
for (i = 1; i < argc; i++) {
|
|
if (argv[i][0] == '-') {
|
|
opt = argv[i][1];
|
|
switch (opt) {
|
|
case 'a':
|
|
opt_fopen[0] = 'a';
|
|
break;
|
|
#if 0
|
|
case 'i':
|
|
fprintf(stderr, "ignore interrupt not implemented\n");
|
|
break;
|
|
#endif
|
|
default:
|
|
usage(tee_usage);
|
|
}
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* init FILE pointers */
|
|
FileList = calloc(FL_MAX, sizeof(FILE*));
|
|
if (!FileList) {
|
|
errorMsg("%s\n", strerror(errno));
|
|
exit(1);
|
|
}
|
|
FL_end = 0;
|
|
FileList[0] = stdout;
|
|
for (; i < argc; i++) {
|
|
/* add a file to FileList */
|
|
file = fopen(argv[i], opt_fopen);
|
|
if (!file) {
|
|
continue;
|
|
}
|
|
if (FL_end < FL_MAX) {
|
|
FileList[++FL_end] = file;
|
|
}
|
|
}
|
|
|
|
/* read and redirect */
|
|
while ((c = (char) getchar()) && (!feof(stdin))) {
|
|
FL_apply(tee_fwrite, c);
|
|
}
|
|
|
|
/* clean up */
|
|
FL_apply(tee_fclose, 0);
|
|
/* Don't bother to close files Exit does that
|
|
* automagically, so we can save a few bytes */
|
|
/* free(FileList); */
|
|
return(0);
|
|
}
|
|
|
|
/* $Id: tee.c,v 1.12 2000/07/14 01:51:25 kraai Exp $ */
|