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/* Shell quoting.
Copyright (C) 2001-2004, 2006, 2009-2020 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 3 of the License, 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, see <https://www.gnu.org/licenses/>. */
#include <config.h>
/* Specification. */
#include "sh-quote.h"
#include <string.h>
#include "quotearg.h"
#include "xalloc.h"
/* Describes quoting for sh compatible shells. */
static struct quoting_options *sh_quoting_options;
/* Initializes the sh_quoting_options variable. */
static void
init_sh_quoting_options ()
{
sh_quoting_options = clone_quoting_options (NULL);
set_quoting_style (sh_quoting_options, shell_quoting_style);
}
/* Returns the number of bytes needed for the quoted string. */
size_t
shell_quote_length (const char *string)
{
if (sh_quoting_options == NULL)
init_sh_quoting_options ();
return quotearg_buffer (NULL, 0, string, strlen (string),
sh_quoting_options);
}
/* Copies the quoted string to p and returns the incremented p.
There must be room for shell_quote_length (string) + 1 bytes at p. */
char *
shell_quote_copy (char *p, const char *string)
{
if (sh_quoting_options == NULL)
init_sh_quoting_options ();
return p + quotearg_buffer (p, (size_t)(-1), string, strlen (string),
sh_quoting_options);
}
/* Returns the freshly allocated quoted string. */
char *
shell_quote (const char *string)
{
if (sh_quoting_options == NULL)
init_sh_quoting_options ();
return quotearg_alloc (string, strlen (string), sh_quoting_options);
}
/* Returns a freshly allocated string containing all argument strings, quoted,
separated through spaces. */
char *
shell_quote_argv (char * const *argv)
{
if (*argv != NULL)
{
char * const *argp;
size_t length;
char *command;
char *p;
length = 0;
for (argp = argv; ; )
{
length += shell_quote_length (*argp) + 1;
argp++;
if (*argp == NULL)
break;
}
command = XNMALLOC (length, char);
p = command;
for (argp = argv; ; )
{
p = shell_quote_copy (p, *argp);
argp++;
if (*argp == NULL)
break;
*p++ = ' ';
}
*p = '\0';
return command;
}
else
return xstrdup ("");
}
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