kc3-lang/gnulib/lib/sh-quote.c

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• Hash : 281b825e
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  Date : 2018-01-01T00:57:25
  

  maint: Run 'make update-copyright'
  

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• lib/sh-quote.c

• /* Shell quoting.
     Copyright (C) 2001-2004, 2006, 2009-2018 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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