Add subroutines for passing strings to a program through a shell.

1 files changed, 36 insertions, 0 deletions

diff --git a/lib/sh-quote.h b/lib/sh-quote.h
new file mode 100644
index 0000000..8c18c98
--- /dev/null
+++ b/lib/sh-quote.h
@@ -0,0 +1,36 @@
+/* Shell quoting.
+   Copyright (C) 2001 Free Software Foundation, Inc.
+   Written by Bruno Haible <haible@clisp.cons.org>, 2001.
+
+   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, 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.  */
+
+/* When passing a command to a shell, we must quote the program name and
+   arguments, since Unix shells interpret characters like " ", "'", "<", ">",
+   "$" etc. in a special way.  */
+
+#include <stddef.h>
+
+/* Returns the number of bytes needed for the quoted string.  */
+extern size_t shell_quote_length PARAMS ((const char *string));
+
+/* Copies the quoted string to p and returns the incremented p.  */
+extern char * shell_quote_copy PARAMS ((char *p, const char *string));
+
+/* Returns the freshly allocated quoted string.  */
+extern char * shell_quote PARAMS ((const char *string));
+
+/* Returns a freshly allocated string containing all argument strings, quoted,
+   separated through spaces.  */
+extern char * shell_quote_argv PARAMS ((char **argv));