mirror of
https://github.com/sheumann/hush.git
synced 2024-08-20 04:28:57 +00:00
386 lines
10 KiB
C
386 lines
10 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* cut implementation for busybox
|
|
*
|
|
* Copyright (c) Michael J. Holme
|
|
*
|
|
* This version of cut is adapted from Minix cut and was modified
|
|
* by Erik Andersen <andersee@debian.org> to be used in busybox.
|
|
*
|
|
* 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
|
|
*
|
|
* Original copyright notice is retained at the end of this file.
|
|
*/
|
|
|
|
#include "internal.h"
|
|
#include <sys/types.h>
|
|
#include <ctype.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#define BB_DECLARE_EXTERN
|
|
#define bb_need_help
|
|
#include "messages.c"
|
|
|
|
#define MAX_FIELD 80 /* Pointers to the beginning of each field
|
|
* are stored in columns[], if a line holds
|
|
* more than MAX_FIELD columns the array
|
|
* boundary is exceed. But unlikely at 80 */
|
|
|
|
#define MAX_ARGS 32 /* Maximum number of fields following -f or
|
|
* -c switches */
|
|
int args[MAX_ARGS * 2];
|
|
int num_args;
|
|
|
|
/* Lots of new defines, should easen maintainance... */
|
|
#define DUMP_STDIN 0 /* define for mode: no options */
|
|
#define OPTIONF 1 /* define for mode: option -f */
|
|
#define OPTIONC 2 /* define for mode: option -c */
|
|
#define OPTIONB 3 /* define for mode: option -b */
|
|
#define NOTSET 0 /* option not selected */
|
|
#define SET 1 /* option selected */
|
|
#define OPTIONS 1 /*define option -s */
|
|
/* Defines for the warnings */
|
|
#define DELIMITER_NOT_APPLICABLE 0
|
|
#define OVERRIDING_PREVIOUS_MODE 1
|
|
#define OPTION_NOT_APPLICABLE 2
|
|
#define UNKNOWN_OPTION 3
|
|
#define FILE_NOT_READABLE 4
|
|
/* Defines for the fatal errors */
|
|
#define SYNTAX_ERROR 101
|
|
#define POSITION_ERROR 102
|
|
#define LINE_TO_LONG_ERROR 103
|
|
#define RANGE_ERROR 104
|
|
#define MAX_FIELDS_EXEEDED_ERROR 105
|
|
#define MAX_ARGS_EXEEDED_ERROR 106
|
|
|
|
|
|
int mode; /* 0 = dump stdin to stdout, 1=-f, 2=-c */
|
|
char delim = '\t'; /* default delimiting character */
|
|
FILE *fd;
|
|
char line[BUFSIZ];
|
|
int exit_status;
|
|
int option = 0; /* for -s option */
|
|
|
|
int cut_main(int argc, char **argv);
|
|
void warn(int warn_number, char *option);
|
|
void cuterror(int err);
|
|
void get_args(void);
|
|
void cut(void);
|
|
|
|
void warn(int warn_number, char *option)
|
|
{
|
|
static char *warn_msg[] = {
|
|
"%s: Option -%s allowed only with -f\n",
|
|
"%s: -%s overrides earlier option\n",
|
|
"%s: -%s not allowed in current mode\n",
|
|
"%s: Cannot open %s\n"
|
|
};
|
|
|
|
fprintf(stderr, warn_msg[warn_number], applet_name, option);
|
|
exit_status = warn_number + 1;
|
|
|
|
}
|
|
|
|
void cuterror(int err)
|
|
{
|
|
static char *err_mes[] = {
|
|
"%s: syntax error\n",
|
|
"%s: position must be >0\n",
|
|
"%s: line longer than BUFSIZ\n",
|
|
"%s: range must not decrease from left to right\n",
|
|
"%s: MAX_FIELD exceeded\n",
|
|
"%s: MAX_ARGS exceeded\n"
|
|
};
|
|
|
|
fprintf(stderr, err_mes[err - 101], applet_name);
|
|
exit(err);
|
|
}
|
|
|
|
|
|
void get_args()
|
|
{
|
|
int i = 0;
|
|
int arg_ptr = 0;
|
|
int flag;
|
|
|
|
num_args = 0;
|
|
do {
|
|
if (num_args == MAX_ARGS)
|
|
cuterror(MAX_ARGS_EXEEDED_ERROR);
|
|
if (!isdigit(line[i]) && line[i] != '-')
|
|
cuterror(SYNTAX_ERROR);
|
|
|
|
args[arg_ptr] = 1;
|
|
args[arg_ptr + 1] = BUFSIZ;
|
|
flag = 1;
|
|
|
|
while (line[i] != ',' && line[i] != 0) {
|
|
if (isdigit(line[i])) {
|
|
args[arg_ptr] = 0;
|
|
while (isdigit(line[i]))
|
|
args[arg_ptr] = 10 * args[arg_ptr] + line[i++] - '0';
|
|
if (!args[arg_ptr])
|
|
cuterror(POSITION_ERROR);
|
|
arg_ptr++;
|
|
}
|
|
if (line[i] == '-') {
|
|
arg_ptr |= 1;
|
|
i++;
|
|
flag = 0;
|
|
}
|
|
}
|
|
if (flag && arg_ptr & 1)
|
|
args[arg_ptr] = args[arg_ptr - 1];
|
|
if (args[num_args * 2] > args[num_args * 2 + 1])
|
|
cuterror(RANGE_ERROR);
|
|
num_args++;
|
|
arg_ptr = num_args * 2;
|
|
}
|
|
while (line[i++]);
|
|
}
|
|
|
|
|
|
void cut()
|
|
{
|
|
int i, j, length, maxcol=0;
|
|
char *columns[MAX_FIELD];
|
|
|
|
while (fgets(line, BUFSIZ, fd)) {
|
|
maxcol=0;
|
|
length = strlen(line) - 1;
|
|
*(line + length) = 0;
|
|
switch (mode) {
|
|
case DUMP_STDIN:
|
|
printf("%s", line);
|
|
break;
|
|
case OPTIONF:
|
|
columns[maxcol++] = line;
|
|
for (i = 0; i < length; i++) {
|
|
if (*(line + i) == delim) {
|
|
*(line + i) = 0;
|
|
if (maxcol == MAX_FIELD)
|
|
cuterror(MAX_FIELDS_EXEEDED_ERROR);
|
|
columns[maxcol] = line + i + 1;
|
|
maxcol++;
|
|
}
|
|
}
|
|
if (maxcol != 1) {
|
|
for (i = 0; i < num_args; i++) {
|
|
for (j = args[i * 2]; j <= args[i * 2 + 1]; j++)
|
|
if (j <= maxcol) {
|
|
|
|
printf("%s", columns[j - 1]);
|
|
|
|
if (i != num_args - 1 || j != args[i * 2 + 1])
|
|
putchar(delim);
|
|
}
|
|
}
|
|
} else if (option != OPTIONS) {
|
|
printf("%s",line);
|
|
}
|
|
break;
|
|
case OPTIONC:
|
|
for (i = 0; i < num_args; i++) {
|
|
for (j = args[i * 2];
|
|
j <= (args[i * 2 + 1] >
|
|
length ? length : args[i * 2 + 1]); j++)
|
|
putchar(*(line + j - 1));
|
|
}
|
|
}
|
|
if (maxcol != 1)
|
|
putchar('\n');
|
|
}
|
|
}
|
|
|
|
|
|
int cut_main(int argc, char **argv)
|
|
{
|
|
int i = 1;
|
|
int numberFilenames = 0;
|
|
|
|
if (argc == 1 || strcmp(argv[1], dash_dash_help)==0)
|
|
usage( "cut [OPTION]... [FILE]...\n"
|
|
#ifndef BB_FEATURE_TRIVIAL_HELP
|
|
"\nPrints selected fields from each input FILE to standard output.\n\n"
|
|
"Options:\n"
|
|
"\t-b LIST\tOutput only bytes from LIST\n"
|
|
"\t-c LIST\tOutput only characters from LIST\n"
|
|
"\t-d CHAR\tUse CHAR instead of tab as the field delimiter\n"
|
|
"\t-s\tOnly output Lines if the include DELIM\n"
|
|
"\t-f N\tPrint only these fields\n"
|
|
"\t-n\tIgnored\n"
|
|
#endif
|
|
);
|
|
|
|
while (i < argc) {
|
|
if (argv[i][0] == '-') {
|
|
switch (argv[i++][1]) {
|
|
case 'd':
|
|
if (mode == OPTIONC || mode == OPTIONB)
|
|
warn(DELIMITER_NOT_APPLICABLE, "d");
|
|
if (argc > i)
|
|
delim = argv[i++][0];
|
|
else
|
|
cuterror(SYNTAX_ERROR);
|
|
break;
|
|
case 'f':
|
|
sprintf(line, "%s", argv[i++]);
|
|
if (mode == OPTIONC || mode == OPTIONB)
|
|
warn(OVERRIDING_PREVIOUS_MODE, "f");
|
|
mode = OPTIONF;
|
|
break;
|
|
case 'b':
|
|
sprintf(line, "%s", argv[i++]);
|
|
if (mode == OPTIONF || mode == OPTIONC)
|
|
warn(OVERRIDING_PREVIOUS_MODE, "b");
|
|
mode = OPTIONB;
|
|
break;
|
|
case 'c':
|
|
sprintf(line, "%s", argv[i++]);
|
|
if (mode == OPTIONF || mode == OPTIONB)
|
|
warn(OVERRIDING_PREVIOUS_MODE, "c");
|
|
mode = OPTIONC;
|
|
break;
|
|
case 's':
|
|
option = OPTIONS;
|
|
|
|
break;
|
|
case '\0': /* - means: read from stdin */
|
|
numberFilenames++;
|
|
break;
|
|
case 'n': /* needed for Posix, but no effect here */
|
|
if (mode != OPTIONB)
|
|
warn(OPTION_NOT_APPLICABLE, "n");
|
|
break;
|
|
default:
|
|
warn(UNKNOWN_OPTION, &(argv[i - 1][1]));
|
|
}
|
|
} else {
|
|
i++;
|
|
numberFilenames++;
|
|
}
|
|
}
|
|
|
|
/* Here follow the checks, if the selected options are reasonable. */
|
|
if (mode == OPTIONB) /* since in Minix char := byte */
|
|
mode = OPTIONC;
|
|
|
|
if (mode != OPTIONF && option == OPTIONS)
|
|
warn(DELIMITER_NOT_APPLICABLE,"s");
|
|
get_args();
|
|
if (numberFilenames != 0) {
|
|
i = 1;
|
|
while (i < argc) {
|
|
if (argv[i][0] == '-') {
|
|
switch (argv[i][1]) {
|
|
case 'f':
|
|
case 'c':
|
|
case 'b':
|
|
case 'd':
|
|
i += 2;
|
|
break;
|
|
case 'n':
|
|
case 'i':
|
|
case 's':
|
|
i++;
|
|
break;
|
|
case '\0':
|
|
fd = stdin;
|
|
i++;
|
|
cut();
|
|
break;
|
|
default:
|
|
i++;
|
|
}
|
|
} else {
|
|
if ((fd = fopen(argv[i++], "r")) == NULL) {
|
|
warn(FILE_NOT_READABLE, argv[i - 1]);
|
|
} else {
|
|
cut();
|
|
fclose(fd);
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
fd = stdin;
|
|
cut();
|
|
}
|
|
|
|
return(exit_status);
|
|
}
|
|
|
|
/* cut - extract columns from a file or stdin. Author: Michael J. Holme
|
|
*
|
|
* Copyright 1989, Michael John Holme, All rights reserved.
|
|
* This code may be freely distributed, provided that this notice
|
|
* remains intact.
|
|
*
|
|
* V1.1: 6th September 1989
|
|
*
|
|
* Bugs, criticisms, etc,
|
|
* c/o Mark Powell
|
|
* JANET sq79@uk.ac.liv
|
|
* ARPA sq79%liv.ac.uk@nsfnet-relay.ac.uk
|
|
* UUCP ...!mcvax!ukc!liv.ac.uk!sq79
|
|
*-------------------------------------------------------------------------
|
|
* Changed for POSIX1003.2/Draft10 conformance
|
|
* Thomas Brupbacher (tobr@mw.lpc.ethz.ch), September 1990.
|
|
* Changes:
|
|
* - separation of error messages ( stderr) and output (stdout).
|
|
* - support for -b and -n (no effect, -b acts as -c)
|
|
* - support for -s
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 1987,1997, Prentice Hall
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use of the MINIX operating system in source and
|
|
* binary forms, with or without modification, are permitted provided
|
|
* that the following conditions are met:
|
|
*
|
|
* Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* Redistributions in binary form must reproduce the above
|
|
* copyright notice, this list of conditions and the following
|
|
* disclaimer in the documentation and/or other materials provided
|
|
* with the distribution.
|
|
*
|
|
* Neither the name of Prentice Hall nor the names of the software
|
|
* authors or contributors may be used to endorse or promote
|
|
* products derived from this software without specific prior
|
|
* written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS, AUTHORS, AND
|
|
* CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
|
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL PRENTICE HALL OR ANY AUTHORS OR CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
|
|
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
|
|
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
|
|
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
*/
|
|
|
|
|