diff options
Diffstat (limited to 'contrib/src/boost/uuid/name_generator.hpp')
-rw-r--r-- | contrib/src/boost/uuid/name_generator.hpp | 125 |
1 files changed, 0 insertions, 125 deletions
diff --git a/contrib/src/boost/uuid/name_generator.hpp b/contrib/src/boost/uuid/name_generator.hpp deleted file mode 100644 index 2e5d8c1..0000000 --- a/contrib/src/boost/uuid/name_generator.hpp +++ /dev/null @@ -1,125 +0,0 @@ -// Boost name_generator.hpp header file ----------------------------------------------// - -// Copyright 2010 Andy Tompkins. -// Distributed under 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) - -#ifndef BOOST_UUID_NAME_GENERATOR_HPP -#define BOOST_UUID_NAME_GENERATOR_HPP - -#include <boost/uuid/uuid.hpp> -#include <boost/uuid/sha1.hpp> -#include <boost/assert.hpp> -#include <string> -#include <cstring> // for strlen, wcslen - -#ifdef BOOST_NO_STDC_NAMESPACE -namespace std { - using ::strlen; - using ::wcslen; -} //namespace std -#endif //BOOST_NO_STDC_NAMESPACE - -namespace boost { -namespace uuids { - -// generate a name-based uuid -// TODO: add in common namesspace uuids -class name_generator { -public: - typedef uuid result_type; - - explicit name_generator(uuid const& namespace_uuid_) - : namespace_uuid(namespace_uuid_) - {} - - uuid operator()(const char* name) { - reset(); - process_characters(name, std::strlen(name)); - return sha_to_uuid(); - } - - uuid operator()(const wchar_t* name) { - reset(); - process_characters(name, std::wcslen(name)); - return sha_to_uuid(); - } - - template <typename ch, typename char_traits, typename alloc> - uuid operator()(std::basic_string<ch, char_traits, alloc> const& name) { - reset(); - process_characters(name.c_str(), name.length()); - return sha_to_uuid(); - } - - uuid operator()(void const* buffer, std::size_t byte_count) { - reset(); - sha.process_bytes(buffer, byte_count); - return sha_to_uuid(); - }; - -private: - // we convert all characters to uint32_t so that each - // character is 4 bytes reguardless of sizeof(char) or - // sizeof(wchar_t). We want the name string on any - // platform / compiler to generate the same uuid - // except for char - template <typename char_type> - void process_characters(char_type const*const characters, size_t count) { - BOOST_ASSERT(sizeof(uint32_t) >= sizeof(char_type)); - - for (size_t i=0; i<count; i++) { - uint32_t c = characters[i]; - sha.process_byte(static_cast<unsigned char>((c >> 0) & 0xFF)); - sha.process_byte(static_cast<unsigned char>((c >> 8) & 0xFF)); - sha.process_byte(static_cast<unsigned char>((c >> 16) & 0xFF)); - sha.process_byte(static_cast<unsigned char>((c >> 24) & 0xFF)); - } - } - - void process_characters(char const*const characters, size_t count) { - sha.process_bytes(characters, count); - } - - void reset() - { - sha.reset(); - sha.process_bytes(namespace_uuid.begin(), namespace_uuid.size()); - } - - uuid sha_to_uuid() - { - unsigned int digest[5]; - - sha.get_digest(digest); - - uuid u; - for (int i=0; i<4; ++i) { - *(u.begin() + i*4+0) = static_cast<uint8_t>((digest[i] >> 24) & 0xFF); - *(u.begin() + i*4+1) = static_cast<uint8_t>((digest[i] >> 16) & 0xFF); - *(u.begin() + i*4+2) = static_cast<uint8_t>((digest[i] >> 8) & 0xFF); - *(u.begin() + i*4+3) = static_cast<uint8_t>((digest[i] >> 0) & 0xFF); - } - - // set variant - // must be 0b10xxxxxx - *(u.begin()+8) &= 0xBF; - *(u.begin()+8) |= 0x80; - - // set version - // must be 0b0101xxxx - *(u.begin()+6) &= 0x5F; //0b01011111 - *(u.begin()+6) |= 0x50; //0b01010000 - - return u; - } - -private: - uuid namespace_uuid; - detail::sha1 sha; -}; - -}} // namespace boost::uuids - -#endif // BOOST_UUID_NAME_GENERATOR_HPP |