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authorSven Gothel <[email protected]>2014-06-19 17:03:28 +0200
committerSven Gothel <[email protected]>2014-06-19 17:03:28 +0200
commitd9a584844a60542519d813b5dc1a62428f14a0ae (patch)
tree942c10a5ebcd0aab65e9d6facb59778468f39d3b /LibOVR/Src/Kernel/OVR_UTF8Util.h
Add OculusSDK 0.3.2 Linux Source Code w/o Samples, docs or binaries (libs or tools)
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+/************************************************************************************
+
+PublicHeader: OVR.h
+Filename : OVR_UTF8Util.h
+Content : UTF8 Unicode character encoding/decoding support
+Created : September 19, 2012
+Notes :
+
+Copyright : Copyright 2014 Oculus VR, Inc. All Rights reserved.
+
+Licensed under the Oculus VR Rift SDK License Version 3.1 (the "License");
+you may not use the Oculus VR Rift SDK except in compliance with the License,
+which is provided at the time of installation or download, or which
+otherwise accompanies this software in either electronic or hard copy form.
+
+You may obtain a copy of the License at
+
+http://www.oculusvr.com/licenses/LICENSE-3.1
+
+Unless required by applicable law or agreed to in writing, the Oculus VR SDK
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+************************************************************************************/
+
+#ifndef OVR_UTF8Util_h
+#define OVR_UTF8Util_h
+
+#include "OVR_Types.h"
+
+namespace OVR { namespace UTF8Util {
+
+//-----------------------------------------------------------------------------------
+
+// *** UTF8 string length and indexing.
+
+// Determines the length of UTF8 string in characters.
+// If source length is specified (in bytes), null 0 character is counted properly.
+SPInt OVR_STDCALL GetLength(const char* putf8str, SPInt length = -1);
+
+// Gets a decoded UTF8 character at index; you can access up to the index returned
+// by GetLength. 0 will be returned for out of bounds access.
+UInt32 OVR_STDCALL GetCharAt(SPInt index, const char* putf8str, SPInt length = -1);
+
+// Converts UTF8 character index into byte offset.
+// -1 is returned if index was out of bounds.
+SPInt OVR_STDCALL GetByteIndex(SPInt index, const char* putf8str, SPInt length = -1);
+
+
+// *** 16-bit Unicode string Encoding/Decoding routines.
+
+// Determines the number of bytes necessary to encode a string.
+// Does not count the terminating 0 (null) character.
+SPInt OVR_STDCALL GetEncodeStringSize(const wchar_t* pchar, SPInt length = -1);
+
+// Encodes a unicode (UCS-2 only) string into a buffer. The size of buffer must be at
+// least GetEncodeStringSize() + 1.
+void OVR_STDCALL EncodeString(char *pbuff, const wchar_t* pchar, SPInt length = -1);
+
+// Decode UTF8 into a wchar_t buffer. Must have GetLength()+1 characters available.
+// Characters over 0xFFFF are replaced with 0xFFFD.
+// Returns the length of resulting string (number of characters)
+UPInt OVR_STDCALL DecodeString(wchar_t *pbuff, const char* putf8str, SPInt bytesLen = -1);
+
+
+// *** Individual character Encoding/Decoding.
+
+// Determined the number of bytes necessary to encode a UCS character.
+int OVR_STDCALL GetEncodeCharSize(UInt32 ucsCharacter);
+
+// Encodes the given UCS character into the given UTF-8 buffer.
+// Writes the data starting at buffer[offset], and
+// increments offset by the number of bytes written.
+// May write up to 6 bytes, so make sure there's room in the buffer
+void OVR_STDCALL EncodeChar(char* pbuffer, SPInt* poffset, UInt32 ucsCharacter);
+
+// Return the next Unicode character in the UTF-8 encoded buffer.
+// Invalid UTF-8 sequences produce a U+FFFD character as output.
+// Advances *utf8_buffer past the character returned. Pointer advance
+// occurs even if the terminating 0 character is hit, since that allows
+// strings with middle '\0' characters to be supported.
+UInt32 OVR_STDCALL DecodeNextChar_Advance0(const char** putf8Buffer);
+
+// Safer version of DecodeNextChar, which doesn't advance pointer if
+// null character is hit.
+inline UInt32 DecodeNextChar(const char** putf8Buffer)
+{
+ UInt32 ch = DecodeNextChar_Advance0(putf8Buffer);
+ if (ch == 0)
+ (*putf8Buffer)--;
+ return ch;
+}
+
+
+}} // OVR::UTF8Util
+
+#endif