| /* vi: set sw=4 ts=4: */ |
| /* |
| * Mini xargs implementation for busybox |
| * |
| * Copyright (C) 2000 by Lineo, inc. |
| * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.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 |
| * 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 <stdlib.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <errno.h> |
| #include <getopt.h> |
| |
| |
| int xargs_main(int argc, char **argv) |
| { |
| char *in_from_stdin = NULL; |
| char *args_from_cmdline = NULL; |
| char *cmd_to_be_executed = NULL; |
| char traceflag = 0; |
| int len_args_from_cmdline, len_cmd_to_be_executed, len, opt; |
| |
| while ((opt = getopt(argc, argv, "t")) != EOF) { |
| switch (opt) { |
| case 't': |
| traceflag=1; |
| break; |
| default: |
| fatalError(xargs_usage); |
| } |
| } |
| |
| /* Store the command and arguments to be executed (from the command line) */ |
| if (optind == argc) { |
| len_args_from_cmdline = 6; |
| args_from_cmdline = xmalloc(len_args_from_cmdline); |
| strcat(args_from_cmdline, "echo "); |
| } else { |
| opt=strlen(argv[optind]); |
| len_args_from_cmdline = (opt > 10)? opt : 10; |
| args_from_cmdline = xcalloc(len_args_from_cmdline, sizeof(char)); |
| for (; optind < argc; optind++) { |
| if (strlen(argv[optind]) + strlen(args_from_cmdline) > |
| len_args_from_cmdline) { |
| len_args_from_cmdline += strlen(argv[optind]); |
| args_from_cmdline = |
| xrealloc(args_from_cmdline, |
| len_args_from_cmdline+1); |
| } |
| strcat(args_from_cmdline, argv[optind]); |
| strcat(args_from_cmdline, " "); |
| } |
| } |
| |
| /* Set up some space for the command to be executed to be held in */ |
| len_cmd_to_be_executed=10; |
| cmd_to_be_executed = xcalloc(len_cmd_to_be_executed, sizeof(char)); |
| strcpy(cmd_to_be_executed, args_from_cmdline); |
| strcat(cmd_to_be_executed, " "); |
| |
| /* Now, read in one line at a time from stdin, and run command+args on it */ |
| in_from_stdin = get_line_from_file(stdin); |
| for (;in_from_stdin!=NULL;) { |
| char *tmp; |
| len = strlen(in_from_stdin) + len_args_from_cmdline; |
| len_cmd_to_be_executed+=len+3; |
| cmd_to_be_executed=xrealloc(cmd_to_be_executed, len_cmd_to_be_executed); |
| |
| /* Strip out any \n's, so we just get one command to run */ |
| while( (tmp = strchr(in_from_stdin, '\n')) != NULL ) |
| *tmp=' '; |
| |
| strcat(cmd_to_be_executed, in_from_stdin); |
| strcat(cmd_to_be_executed, " "); |
| |
| free(in_from_stdin); |
| in_from_stdin = get_line_from_file(stdin); |
| } |
| |
| if (traceflag==1) |
| fputs(cmd_to_be_executed, stderr); |
| |
| if ((system(cmd_to_be_executed) != 0) && (errno != 0)) |
| fatalError("%s", strerror(errno)); |
| |
| |
| #ifdef BB_FEATURE_CLEAN_UP |
| free(args_from_cmdline); |
| free(cmd_to_be_executed); |
| #endif |
| |
| return 0; |
| } |
| /* |
| Local Variables: |
| c-file-style: "linux" |
| c-basic-offset: 4 |
| tab-width: 4 |
| End: |
| */ |
| |