1/* Shell quoting. 2 Copyright (C) 2001-2002, 2004 Free Software Foundation, Inc. 3 Written by Bruno Haible <haible@clisp.cons.org>, 2001. 4 5 This program is free software: you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 3 of the License, or 8 (at your option) any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 17 18/* When passing a command to a shell, we must quote the program name and 19 arguments, since Unix shells interpret characters like " ", "'", "<", ">", 20 "$" etc. in a special way. */ 21 22#include <stddef.h> 23 24/* Returns the number of bytes needed for the quoted string. */ 25extern size_t shell_quote_length (const char *string); 26 27/* Copies the quoted string to p and returns the incremented p. 28 There must be room for shell_quote_length (string) + 1 bytes at p. */ 29extern char * shell_quote_copy (char *p, const char *string); 30 31/* Returns the freshly allocated quoted string. */ 32extern char * shell_quote (const char *string); 33 34/* Returns a freshly allocated string containing all argument strings, quoted, 35 separated through spaces. */ 36extern char * shell_quote_argv (char **argv); 37