1 /* vi: set sw=4 ts=4: */
3 * Mini xargs implementation for busybox
5 * Copyright (C) 2000 by Lineo, inc.
6 * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
32 int xargs_main(int argc, char **argv)
34 char *in_from_stdin = NULL;
35 char *args_from_cmdline = NULL;
36 char *cmd_to_be_executed = NULL;
38 int len_args_from_cmdline, len_cmd_to_be_executed, len, opt;
40 /* Note that we do not use getopt here, since
41 * we only want to interpret initial options,
42 * not options passed to commands */
43 while (--argc && **(++argv) == '-') {
50 fatalError(xargs_usage);
55 /* Store the command and arguments to be executed (from the command line) */
57 len_args_from_cmdline = 6;
58 args_from_cmdline = xmalloc(len_args_from_cmdline);
59 strcat(args_from_cmdline, "echo ");
62 len_args_from_cmdline = (opt > 10)? opt : 10;
63 args_from_cmdline = xcalloc(len_args_from_cmdline, sizeof(char));
65 if (strlen(*argv) + strlen(args_from_cmdline) >
66 len_args_from_cmdline) {
67 len_args_from_cmdline += strlen(*argv);
69 xrealloc(args_from_cmdline,
70 len_args_from_cmdline+1);
72 strcat(args_from_cmdline, *argv);
73 strcat(args_from_cmdline, " ");
77 /* Set up some space for the command to be executed to be held in */
78 len_cmd_to_be_executed=10;
79 cmd_to_be_executed = xcalloc(len_cmd_to_be_executed, sizeof(char));
80 strcpy(cmd_to_be_executed, args_from_cmdline);
81 strcat(cmd_to_be_executed, " ");
83 /* Now, read in one line at a time from stdin, and run command+args on it */
84 in_from_stdin = get_line_from_file(stdin);
85 for (;in_from_stdin!=NULL;) {
87 len = strlen(in_from_stdin) + len_args_from_cmdline;
88 len_cmd_to_be_executed+=len+3;
89 cmd_to_be_executed=xrealloc(cmd_to_be_executed, len_cmd_to_be_executed);
91 /* Strip out any \n's, so we just get one command to run */
92 while( (tmp = strchr(in_from_stdin, '\n')) != NULL )
95 strcat(cmd_to_be_executed, in_from_stdin);
96 strcat(cmd_to_be_executed, " ");
99 in_from_stdin = get_line_from_file(stdin);
103 fputs(cmd_to_be_executed, stderr);
105 if ((system(cmd_to_be_executed) != 0) && (errno != 0))
106 fatalError("%s", strerror(errno));
109 #ifdef BB_FEATURE_CLEAN_UP
110 free(args_from_cmdline);
111 free(cmd_to_be_executed);
118 c-file-style: "linux"