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111 lines
2.8 KiB
C
111 lines
2.8 KiB
C
/* Shell quoting.
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Copyright (C) 2001-2004 Free Software Foundation, Inc.
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Written by Bruno Haible <haible@clisp.cons.org>, 2001.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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/* Specification. */
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#include "sh-quote.h"
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#include <string.h>
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#include "quotearg.h"
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#include "xalloc.h"
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/* Describes quoting for sh compatible shells. */
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static struct quoting_options *sh_quoting_options;
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/* Initializes the sh_quoting_options variable. */
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static void
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init_sh_quoting_options ()
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{
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sh_quoting_options = clone_quoting_options (NULL);
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set_quoting_style (sh_quoting_options, shell_quoting_style);
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}
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/* Returns the number of bytes needed for the quoted string. */
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size_t
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shell_quote_length (const char *string)
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{
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if (sh_quoting_options == NULL)
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init_sh_quoting_options ();
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return quotearg_buffer (NULL, 0, string, strlen (string),
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sh_quoting_options);
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}
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/* Copies the quoted string to p and returns the incremented p.
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There must be room for shell_quote_length (string) + 1 bytes at p. */
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char *
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shell_quote_copy (char *p, const char *string)
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{
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if (sh_quoting_options == NULL)
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init_sh_quoting_options ();
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return p + quotearg_buffer (p, (size_t)(-1), string, strlen (string),
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sh_quoting_options);
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}
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/* Returns the freshly allocated quoted string. */
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char *
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shell_quote (const char *string)
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{
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if (sh_quoting_options == NULL)
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init_sh_quoting_options ();
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return quotearg_alloc (string, strlen (string), sh_quoting_options);
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}
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/* Returns a freshly allocated string containing all argument strings, quoted,
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separated through spaces. */
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char *
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shell_quote_argv (char **argv)
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{
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if (*argv != NULL)
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{
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char **argp;
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size_t length;
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char *command;
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char *p;
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length = 0;
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for (argp = argv; ; )
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{
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length += shell_quote_length (*argp) + 1;
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argp++;
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if (*argp == NULL)
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break;
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}
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command = (char *) xmalloc (length);
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p = command;
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for (argp = argv; ; )
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{
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p = shell_quote_copy (p, *argp);
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argp++;
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if (*argp == NULL)
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break;
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*p++ = ' ';
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}
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*p = '\0';
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return command;
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}
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else
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return xstrdup ("");
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}
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