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/* Functions to deal with the inferior being executed on GDB or
GDBserver.
Copyright (C) 2019-2020 Free Software Foundation, Inc.
This file is part of GDB.
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 <http://www.gnu.org/licenses/>. */
#include "gdbsupport/common-defs.h"
#include "gdbsupport/common-inferior.h"
/* See common-inferior.h. */
bool startup_with_shell = true;
/* See common-inferior.h. */
char *
construct_inferior_arguments (int argc, char **argv)
{
char *result;
/* ARGC should always be at least 1, but we double check this
here. This is also needed to silence -Werror-stringop
warnings. */
gdb_assert (argc > 0);
if (startup_with_shell)
{
#ifdef __MINGW32__
/* This holds all the characters considered special to the
Windows shells. */
static const char special[] = "\"!&*|[]{}<>?`~^=;, \t\n";
static const char quote = '"';
#else
/* This holds all the characters considered special to the
typical Unix shells. We include `^' because the SunOS
/bin/sh treats it as a synonym for `|'. */
static const char special[] = "\"!#$&*()\\|[]{}<>?'`~^; \t\n";
static const char quote = '\'';
#endif
int i;
int length = 0;
char *out, *cp;
/* We over-compute the size. It shouldn't matter. */
for (i = 0; i < argc; ++i)
length += 3 * strlen (argv[i]) + 1 + 2 * (argv[i][0] == '\0');
result = (char *) xmalloc (length);
out = result;
for (i = 0; i < argc; ++i)
{
if (i > 0)
*out++ = ' ';
/* Need to handle empty arguments specially. */
if (argv[i][0] == '\0')
{
*out++ = quote;
*out++ = quote;
}
else
{
#ifdef __MINGW32__
int quoted = 0;
if (strpbrk (argv[i], special))
{
quoted = 1;
*out++ = quote;
}
#endif
for (cp = argv[i]; *cp; ++cp)
{
if (*cp == '\n')
{
/* A newline cannot be quoted with a backslash (it
just disappears), only by putting it inside
quotes. */
*out++ = quote;
*out++ = '\n';
*out++ = quote;
}
else
{
#ifdef __MINGW32__
if (*cp == quote)
#else
if (strchr (special, *cp) != NULL)
#endif
*out++ = '\\';
*out++ = *cp;
}
}
#ifdef __MINGW32__
if (quoted)
*out++ = quote;
#endif
}
}
*out = '\0';
}
else
{
/* In this case we can't handle arguments that contain spaces,
tabs, or newlines -- see breakup_args(). */
int i;
int length = 0;
for (i = 0; i < argc; ++i)
{
char *cp = strchr (argv[i], ' ');
if (cp == NULL)
cp = strchr (argv[i], '\t');
if (cp == NULL)
cp = strchr (argv[i], '\n');
if (cp != NULL)
error (_("can't handle command-line "
"argument containing whitespace"));
length += strlen (argv[i]) + 1;
}
result = (char *) xmalloc (length);
result[0] = '\0';
for (i = 0; i < argc; ++i)
{
if (i > 0)
strcat (result, " ");
strcat (result, argv[i]);
}
}
return result;
}
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