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Diffstat (limited to '3rdParty/Boost/src/boost/uuid/name_generator.hpp')
-rw-r--r--3rdParty/Boost/src/boost/uuid/name_generator.hpp125
1 files changed, 125 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/uuid/name_generator.hpp b/3rdParty/Boost/src/boost/uuid/name_generator.hpp
new file mode 100644
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--- /dev/null
+++ b/3rdParty/Boost/src/boost/uuid/name_generator.hpp
@@ -0,0 +1,125 @@
+// 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( (c >> 0) && 0xFF );
+ sha.process_byte( (c >> 8) && 0xFF );
+ sha.process_byte( (c >> 16) && 0xFF );
+ sha.process_byte( (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) = ((digest[i] >> 24) & 0xFF);
+ *(u.begin() + i*4+1) = ((digest[i] >> 16) & 0xFF);
+ *(u.begin() + i*4+2) = ((digest[i] >> 8) & 0xFF);
+ *(u.begin() + i*4+3) = ((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