gdbsupport/common-inferior.cc

   1 /* Functions to deal with the inferior being executed on GDB or
   2    GDBserver.
   3
   4    Copyright (C) 2019-2024 Free Software Foundation, Inc.
   5
   6    This file is part of GDB.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  20
  21 #include "gdbsupport/common-inferior.h"
  22
  23 /* See common-inferior.h.  */
  24
  25 bool startup_with_shell = true;
  26
  27 /* See common-inferior.h.  */
  28
  29 std::string
  30 construct_inferior_arguments (gdb::array_view<char * const> argv)
  31 {
  32   std::string result;
  33
  34   if (startup_with_shell)
  35     {
  36 #ifdef __MINGW32__
  37       /* This holds all the characters considered special to the
  38          Windows shells.  */
  39       static const char special[] = "\"!&*|[]{}<>?`~^=;, \t\n";
  40       static const char quote = '"';
  41 #else
  42       /* This holds all the characters considered special to the
  43          typical Unix shells.  We include `^' because the SunOS
  44          /bin/sh treats it as a synonym for `|'.  */
  45       static const char special[] = "\"!#$&*()\\|[]{}<>?'`~^; \t\n";
  46       static const char quote = '\'';
  47 #endif
  48       for (int i = 0; i < argv.size (); ++i)
  49         {
  50           if (i > 0)
  51             result += ' ';
  52
  53           /* Need to handle empty arguments specially.  */
  54           if (argv[i][0] == '\0')
  55             {
  56               result += quote;
  57               result += quote;
  58             }
  59           else
  60             {
  61 #ifdef __MINGW32__
  62               bool quoted = false;
  63
  64               if (strpbrk (argv[i], special))
  65                 {
  66                   quoted = true;
  67                   result += quote;
  68                 }
  69 #endif
  70               for (char *cp = argv[i]; *cp; ++cp)
  71                 {
  72                   if (*cp == '\n')
  73                     {
  74                       /* A newline cannot be quoted with a backslash (it
  75                          just disappears), only by putting it inside
  76                          quotes.  */
  77                       result += quote;
  78                       result += '\n';
  79                       result += quote;
  80                     }
  81                   else
  82                     {
  83 #ifdef __MINGW32__
  84                       if (*cp == quote)
  85 #else
  86                       if (strchr (special, *cp) != NULL)
  87 #endif
  88                         result += '\\';
  89                       result += *cp;
  90                     }
  91                 }
  92 #ifdef __MINGW32__
  93               if (quoted)
  94                 result += quote;
  95 #endif
  96             }
  97         }
  98     }
  99   else
 100     {
 101       /* In this case we can't handle arguments that contain spaces,
 102          tabs, or newlines -- see breakup_args().  */
 103       for (char *arg : argv)
 104         {
 105           char *cp = strchr (arg, ' ');
 106           if (cp == NULL)
 107             cp = strchr (arg, '\t');
 108           if (cp == NULL)
 109             cp = strchr (arg, '\n');
 110           if (cp != NULL)
 111             error (_("can't handle command-line "
 112                      "argument containing whitespace"));
 113         }
 114
 115       for (int i = 0; i < argv.size (); ++i)
 116         {
 117           if (i > 0)
 118             result += " ";
 119           result += argv[i];
 120         }
 121     }
 122
 123   return result;
 124 }