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// portability.cpp ---------------------------------------------------------//
// Copyright 2002-2005 Beman Dawes
// Use, modification, and distribution is subject to the Boost Software
// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy
// at http://www.boost.org/LICENSE_1_0.txt)
// See library home page at http://www.boost.org/libs/filesystem
//----------------------------------------------------------------------------//
// define BOOST_FILESYSTEM_SOURCE so that <boost/filesystem/config.hpp> knows
// the library is being built (possibly exporting rather than importing code)
#define BOOST_FILESYSTEM_SOURCE
#include <boost/filesystem/config.hpp>
#include <boost/filesystem/path.hpp>
namespace fs = boost::filesystem;
#include <cstring> // SGI MIPSpro compilers need this
# ifdef BOOST_NO_STDC_NAMESPACE
namespace std { using ::strerror; }
# endif
//----------------------------------------------------------------------------//
namespace
{
const char invalid_chars[] =
"\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0A\x0B\x0C\x0D\x0E\x0F"
"\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1A\x1B\x1C\x1D\x1E\x1F"
"<>:\"/\\|";
// note that the terminating '\0' is part of the string - thus the size below
// is sizeof(invalid_chars) rather than sizeof(invalid_chars)-1. I
const std::string windows_invalid_chars( invalid_chars, sizeof(invalid_chars) );
const std::string valid_posix(
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789._-" );
} // unnamed namespace
namespace boost
{
namespace filesystem
{
// name_check functions ----------------------------------------------//
# ifdef BOOST_WINDOWS
BOOST_FILESYSTEM_DECL bool native( const std::string & name )
{
return windows_name( name );
}
# else
BOOST_FILESYSTEM_DECL bool native( const std::string & name )
{
return name.size() != 0
&& name[0] != ' '
&& name.find('/') == std::string::npos;
}
# endif
BOOST_FILESYSTEM_DECL bool portable_posix_name( const std::string & name )
{
return name.size() != 0
&& name.find_first_not_of( valid_posix ) == std::string::npos;
}
BOOST_FILESYSTEM_DECL bool windows_name( const std::string & name )
{
return name.size() != 0
&& name[0] != ' '
&& name.find_first_of( windows_invalid_chars ) == std::string::npos
&& *(name.end()-1) != ' '
&& (*(name.end()-1) != '.'
|| name.length() == 1 || name == "..");
}
BOOST_FILESYSTEM_DECL bool portable_name( const std::string & name )
{
return
name.size() != 0
&& ( name == "."
|| name == ".."
|| (windows_name( name )
&& portable_posix_name( name )
&& name[0] != '.' && name[0] != '-'));
}
BOOST_FILESYSTEM_DECL bool portable_directory_name( const std::string & name )
{
return
name == "."
|| name == ".."
|| (portable_name( name )
&& name.find('.') == std::string::npos);
}
BOOST_FILESYSTEM_DECL bool portable_file_name( const std::string & name )
{
std::string::size_type pos;
return
portable_name( name )
&& name != "."
&& name != ".."
&& ( (pos = name.find( '.' )) == std::string::npos
|| (name.find( '.', pos+1 ) == std::string::npos
&& (pos + 5) > name.length() ))
;
}
} // namespace filesystem
} // namespace boost
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