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