1 /* Quoting for a system command.
2 Copyright (C) 2001-2012 Free Software Foundation, Inc.
3 Written by Bruno Haible <bruno@clisp.org>, 2012.
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.
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.
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/>. */
18 #ifndef _SYSTEM_QUOTE_H
19 #define _SYSTEM_QUOTE_H
21 /* When passing a command the system's command interpreter, we must quote the
22 program name and arguments, since
23 - Unix shells interpret characters like " ", "'", "<", ">", "$", '*', '?'
24 etc. in a special way,
25 - Windows CreateProcess() interprets characters like ' ', '\t', '\\', '"'
26 etc. (but not '<' and '>') in a special way,
27 - Windows cmd.exe also interprets characters like '<', '>', '&', '%', etc.
28 in a special way. Note that it is impossible to pass arguments that
29 contain newlines or carriage return characters to programs through
31 - Windows programs usually perform wildcard expansion when they receive
32 arguments that contain unquoted '*', '?' characters. */
40 /* Identifier for the kind of interpreter of the command. */
41 enum system_command_interpreter
43 /* The interpreter used by the system() and popen() functions.
44 This is equivalent to SCI_POSIX_SH on Unix platforms and
45 SCI_WINDOWS_CMD on native Windows platforms. */
47 /* The POSIX /bin/sh. */
49 #if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
50 /* The native Windows CreateProcess() function. */
51 , SCI_WINDOWS_CREATEPROCESS = 2
52 /* The native Windows cmd.exe interpreter. */
57 /* Returns the number of bytes needed for the quoted string. */
59 system_quote_length (enum system_command_interpreter interpreter,
62 /* Copies the quoted string to p and returns the incremented p.
63 There must be room for system_quote_length (string) + 1 bytes at p. */
65 system_quote_copy (char *p,
66 enum system_command_interpreter interpreter,
69 /* Returns the freshly allocated quoted string. */
71 system_quote (enum system_command_interpreter interpreter,
74 /* Returns a freshly allocated string containing all argument strings, quoted,
75 separated through spaces. */
77 system_quote_argv (enum system_command_interpreter interpreter,
84 #endif /* _SYSTEM_QUOTE_H */