| /* 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 (""); |
| } |