diff options
author | Brad Davis <[email protected]> | 2013-07-03 09:16:03 -0700 |
---|---|---|
committer | Brad Davis <[email protected]> | 2013-07-03 09:16:03 -0700 |
commit | d46694c91c2bec4eb1e282c0c0101e6dab26e082 (patch) | |
tree | eb5fba71edf1aedc0d6af9406881004289433b20 /LibOVR/Src/Kernel/OVR_String.cpp | |
parent | 7fa8be4bc565adc9911c95c814480cc48bf2d13c (diff) |
SDK 0.2.3
Diffstat (limited to 'LibOVR/Src/Kernel/OVR_String.cpp')
-rw-r--r-- | LibOVR/Src/Kernel/OVR_String.cpp | 1504 |
1 files changed, 752 insertions, 752 deletions
diff --git a/LibOVR/Src/Kernel/OVR_String.cpp b/LibOVR/Src/Kernel/OVR_String.cpp index b591ede..4e5eb2e 100644 --- a/LibOVR/Src/Kernel/OVR_String.cpp +++ b/LibOVR/Src/Kernel/OVR_String.cpp @@ -1,752 +1,752 @@ -/************************************************************************************
-
-Filename : OVR_String.cpp
-Content : String UTF8 string implementation with copy-on-write semantics
- (thread-safe for assignment but not modification).
-Created : September 19, 2012
-Notes :
-
-Copyright : Copyright 2012 Oculus VR, Inc. All Rights reserved.
-
-Use of this software is subject to the terms of the Oculus license
-agreement provided at the time of installation or download, or which
-otherwise accompanies this software in either electronic or hard copy form.
-
-************************************************************************************/
-
-#include "OVR_String.h"
-
-#include <stdlib.h>
-#include <ctype.h>
-
-#ifdef OVR_OS_QNX
-# include <strings.h>
-#endif
-
-namespace OVR {
-
-#define String_LengthIsSize (UPInt(1) << String::Flag_LengthIsSizeShift)
-
-String::DataDesc String::NullData = {String_LengthIsSize, 1, {0} };
-
-
-String::String()
-{
- pData = &NullData;
- pData->AddRef();
-};
-
-String::String(const char* pdata)
-{
- // Obtain length in bytes; it doesn't matter if _data is UTF8.
- UPInt size = pdata ? OVR_strlen(pdata) : 0;
- pData = AllocDataCopy1(size, 0, pdata, size);
-};
-
-String::String(const char* pdata1, const char* pdata2, const char* pdata3)
-{
- // Obtain length in bytes; it doesn't matter if _data is UTF8.
- UPInt size1 = pdata1 ? OVR_strlen(pdata1) : 0;
- UPInt size2 = pdata2 ? OVR_strlen(pdata2) : 0;
- UPInt size3 = pdata3 ? OVR_strlen(pdata3) : 0;
-
- DataDesc *pdataDesc = AllocDataCopy2(size1 + size2 + size3, 0,
- pdata1, size1, pdata2, size2);
- memcpy(pdataDesc->Data + size1 + size2, pdata3, size3);
- pData = pdataDesc;
-}
-
-String::String(const char* pdata, UPInt size)
-{
- OVR_ASSERT((size == 0) || (pdata != 0));
- pData = AllocDataCopy1(size, 0, pdata, size);
-};
-
-
-String::String(const InitStruct& src, UPInt size)
-{
- pData = AllocData(size, 0);
- src.InitString(GetData()->Data, size);
-}
-
-String::String(const String& src)
-{
- pData = src.GetData();
- pData->AddRef();
-}
-
-String::String(const StringBuffer& src)
-{
- pData = AllocDataCopy1(src.GetSize(), 0, src.ToCStr(), src.GetSize());
-}
-
-String::String(const wchar_t* data)
-{
- pData = &NullData;
- pData->AddRef();
- // Simplified logic for wchar_t constructor.
- if (data)
- *this = data;
-}
-
-
-String::DataDesc* String::AllocData(UPInt size, UPInt lengthIsSize)
-{
- String::DataDesc* pdesc;
-
- if (size == 0)
- {
- pdesc = &NullData;
- pdesc->AddRef();
- return pdesc;
- }
-
- pdesc = (DataDesc*)OVR_ALLOC(sizeof(DataDesc)+ size);
- pdesc->Data[size] = 0;
- pdesc->RefCount = 1;
- pdesc->Size = size | lengthIsSize;
- return pdesc;
-}
-
-
-String::DataDesc* String::AllocDataCopy1(UPInt size, UPInt lengthIsSize,
- const char* pdata, UPInt copySize)
-{
- String::DataDesc* pdesc = AllocData(size, lengthIsSize);
- memcpy(pdesc->Data, pdata, copySize);
- return pdesc;
-}
-
-String::DataDesc* String::AllocDataCopy2(UPInt size, UPInt lengthIsSize,
- const char* pdata1, UPInt copySize1,
- const char* pdata2, UPInt copySize2)
-{
- String::DataDesc* pdesc = AllocData(size, lengthIsSize);
- memcpy(pdesc->Data, pdata1, copySize1);
- memcpy(pdesc->Data + copySize1, pdata2, copySize2);
- return pdesc;
-}
-
-
-UPInt String::GetLength() const
-{
- // Optimize length accesses for non-UTF8 character strings.
- DataDesc* pdata = GetData();
- UPInt length, size = pdata->GetSize();
-
- if (pdata->LengthIsSize())
- return size;
-
- length = (UPInt)UTF8Util::GetLength(pdata->Data, (UPInt)size);
-
- if (length == size)
- pdata->Size |= String_LengthIsSize;
-
- return length;
-}
-
-
-//static UInt32 String_CharSearch(const char* buf, )
-
-
-UInt32 String::GetCharAt(UPInt index) const
-{
- SPInt i = (SPInt) index;
- DataDesc* pdata = GetData();
- const char* buf = pdata->Data;
- UInt32 c;
-
- if (pdata->LengthIsSize())
- {
- OVR_ASSERT(index < pdata->GetSize());
- buf += i;
- return UTF8Util::DecodeNextChar_Advance0(&buf);
- }
-
- c = UTF8Util::GetCharAt(index, buf, pdata->GetSize());
- return c;
-}
-
-UInt32 String::GetFirstCharAt(UPInt index, const char** offset) const
-{
- DataDesc* pdata = GetData();
- SPInt i = (SPInt) index;
- const char* buf = pdata->Data;
- const char* end = buf + pdata->GetSize();
- UInt32 c;
-
- do
- {
- c = UTF8Util::DecodeNextChar_Advance0(&buf);
- i--;
-
- if (buf >= end)
- {
- // We've hit the end of the string; don't go further.
- OVR_ASSERT(i == 0);
- return c;
- }
- } while (i >= 0);
-
- *offset = buf;
-
- return c;
-}
-
-UInt32 String::GetNextChar(const char** offset) const
-{
- return UTF8Util::DecodeNextChar(offset);
-}
-
-
-
-void String::AppendChar(UInt32 ch)
-{
- DataDesc* pdata = GetData();
- UPInt size = pdata->GetSize();
- char buff[8];
- SPInt encodeSize = 0;
-
- // Converts ch into UTF8 string and fills it into buff.
- UTF8Util::EncodeChar(buff, &encodeSize, ch);
- OVR_ASSERT(encodeSize >= 0);
-
- SetData(AllocDataCopy2(size + (UPInt)encodeSize, 0,
- pdata->Data, size, buff, (UPInt)encodeSize));
- pdata->Release();
-}
-
-
-void String::AppendString(const wchar_t* pstr, SPInt len)
-{
- if (!pstr)
- return;
-
- DataDesc* pdata = GetData();
- UPInt oldSize = pdata->GetSize();
- UPInt encodeSize = (UPInt)UTF8Util::GetEncodeStringSize(pstr, len);
-
- DataDesc* pnewData = AllocDataCopy1(oldSize + (UPInt)encodeSize, 0,
- pdata->Data, oldSize);
- UTF8Util::EncodeString(pnewData->Data + oldSize, pstr, len);
-
- SetData(pnewData);
- pdata->Release();
-}
-
-
-void String::AppendString(const char* putf8str, SPInt utf8StrSz)
-{
- if (!putf8str || !utf8StrSz)
- return;
- if (utf8StrSz == -1)
- utf8StrSz = (SPInt)OVR_strlen(putf8str);
-
- DataDesc* pdata = GetData();
- UPInt oldSize = pdata->GetSize();
-
- SetData(AllocDataCopy2(oldSize + (UPInt)utf8StrSz, 0,
- pdata->Data, oldSize, putf8str, (UPInt)utf8StrSz));
- pdata->Release();
-}
-
-void String::AssignString(const InitStruct& src, UPInt size)
-{
- DataDesc* poldData = GetData();
- DataDesc* pnewData = AllocData(size, 0);
- src.InitString(pnewData->Data, size);
- SetData(pnewData);
- poldData->Release();
-}
-
-void String::AssignString(const char* putf8str, UPInt size)
-{
- DataDesc* poldData = GetData();
- SetData(AllocDataCopy1(size, 0, putf8str, size));
- poldData->Release();
-}
-
-void String::operator = (const char* pstr)
-{
- AssignString(pstr, pstr ? OVR_strlen(pstr) : 0);
-}
-
-void String::operator = (const wchar_t* pwstr)
-{
- DataDesc* poldData = GetData();
- UPInt size = pwstr ? (UPInt)UTF8Util::GetEncodeStringSize(pwstr) : 0;
-
- DataDesc* pnewData = AllocData(size, 0);
- UTF8Util::EncodeString(pnewData->Data, pwstr);
- SetData(pnewData);
- poldData->Release();
-}
-
-
-void String::operator = (const String& src)
-{
- DataDesc* psdata = src.GetData();
- DataDesc* pdata = GetData();
-
- SetData(psdata);
- psdata->AddRef();
- pdata->Release();
-}
-
-
-void String::operator = (const StringBuffer& src)
-{
- DataDesc* polddata = GetData();
- SetData(AllocDataCopy1(src.GetSize(), 0, src.ToCStr(), src.GetSize()));
- polddata->Release();
-}
-
-void String::operator += (const String& src)
-{
- DataDesc *pourData = GetData(),
- *psrcData = src.GetData();
- UPInt ourSize = pourData->GetSize(),
- srcSize = psrcData->GetSize();
- UPInt lflag = pourData->GetLengthFlag() & psrcData->GetLengthFlag();
-
- SetData(AllocDataCopy2(ourSize + srcSize, lflag,
- pourData->Data, ourSize, psrcData->Data, srcSize));
- pourData->Release();
-}
-
-
-String String::operator + (const char* str) const
-{
- String tmp1(*this);
- tmp1 += (str ? str : "");
- return tmp1;
-}
-
-String String::operator + (const String& src) const
-{
- String tmp1(*this);
- tmp1 += src;
- return tmp1;
-}
-
-void String::Remove(UPInt posAt, SPInt removeLength)
-{
- DataDesc* pdata = GetData();
- UPInt oldSize = pdata->GetSize();
- // Length indicates the number of characters to remove.
- UPInt length = GetLength();
-
- // If index is past the string, nothing to remove.
- if (posAt >= length)
- return;
- // Otherwise, cap removeLength to the length of the string.
- if ((posAt + removeLength) > length)
- removeLength = length - posAt;
-
- // Get the byte position of the UTF8 char at position posAt.
- SPInt bytePos = UTF8Util::GetByteIndex(posAt, pdata->Data, oldSize);
- SPInt removeSize = UTF8Util::GetByteIndex(removeLength, pdata->Data + bytePos, oldSize-bytePos);
-
- SetData(AllocDataCopy2(oldSize - removeSize, pdata->GetLengthFlag(),
- pdata->Data, bytePos,
- pData->Data + bytePos + removeSize, (oldSize - bytePos - removeSize)));
- pdata->Release();
-}
-
-
-String String::Substring(UPInt start, UPInt end) const
-{
- UPInt length = GetLength();
- if ((start >= length) || (start >= end))
- return String();
-
- DataDesc* pdata = GetData();
-
- // If size matches, we know the exact index range.
- if (pdata->LengthIsSize())
- return String(pdata->Data + start, end - start);
-
- // Get position of starting character.
- SPInt byteStart = UTF8Util::GetByteIndex(start, pdata->Data, pdata->GetSize());
- SPInt byteSize = UTF8Util::GetByteIndex(end - start, pdata->Data + byteStart, pdata->GetSize()-byteStart);
- return String(pdata->Data + byteStart, (UPInt)byteSize);
-}
-
-void String::Clear()
-{
- NullData.AddRef();
- GetData()->Release();
- SetData(&NullData);
-}
-
-
-String String::ToUpper() const
-{
- UInt32 c;
- const char* psource = GetData()->Data;
- const char* pend = psource + GetData()->GetSize();
- String str;
- SPInt bufferOffset = 0;
- char buffer[512];
-
- while(psource < pend)
- {
- do {
- c = UTF8Util::DecodeNextChar_Advance0(&psource);
- UTF8Util::EncodeChar(buffer, &bufferOffset, OVR_towupper(wchar_t(c)));
- } while ((psource < pend) && (bufferOffset < SPInt(sizeof(buffer)-8)));
-
- // Append string a piece at a time.
- str.AppendString(buffer, bufferOffset);
- bufferOffset = 0;
- }
-
- return str;
-}
-
-String String::ToLower() const
-{
- UInt32 c;
- const char* psource = GetData()->Data;
- const char* pend = psource + GetData()->GetSize();
- String str;
- SPInt bufferOffset = 0;
- char buffer[512];
-
- while(psource < pend)
- {
- do {
- c = UTF8Util::DecodeNextChar_Advance0(&psource);
- UTF8Util::EncodeChar(buffer, &bufferOffset, OVR_towlower(wchar_t(c)));
- } while ((psource < pend) && (bufferOffset < SPInt(sizeof(buffer)-8)));
-
- // Append string a piece at a time.
- str.AppendString(buffer, bufferOffset);
- bufferOffset = 0;
- }
-
- return str;
-}
-
-
-
-String& String::Insert(const char* substr, UPInt posAt, SPInt strSize)
-{
- DataDesc* poldData = GetData();
- UPInt oldSize = poldData->GetSize();
- UPInt insertSize = (strSize < 0) ? OVR_strlen(substr) : (UPInt)strSize;
- UPInt byteIndex = (poldData->LengthIsSize()) ?
- posAt : (UPInt)UTF8Util::GetByteIndex(posAt, poldData->Data, oldSize);
-
- OVR_ASSERT(byteIndex <= oldSize);
-
- DataDesc* pnewData = AllocDataCopy2(oldSize + insertSize, 0,
- poldData->Data, byteIndex, substr, insertSize);
- memcpy(pnewData->Data + byteIndex + insertSize,
- poldData->Data + byteIndex, oldSize - byteIndex);
- SetData(pnewData);
- poldData->Release();
- return *this;
-}
-
-/*
-String& String::Insert(const UInt32* substr, UPInt posAt, SPInt len)
-{
- for (SPInt i = 0; i < len; ++i)
- {
- UPInt charw = InsertCharAt(substr[i], posAt);
- posAt += charw;
- }
- return *this;
-}
-*/
-
-UPInt String::InsertCharAt(UInt32 c, UPInt posAt)
-{
- char buf[8];
- SPInt index = 0;
- UTF8Util::EncodeChar(buf, &index, c);
- OVR_ASSERT(index >= 0);
- buf[(UPInt)index] = 0;
-
- Insert(buf, posAt, index);
- return (UPInt)index;
-}
-
-
-int String::CompareNoCase(const char* a, const char* b)
-{
- return OVR_stricmp(a, b);
-}
-
-int String::CompareNoCase(const char* a, const char* b, SPInt len)
-{
- if (len)
- {
- SPInt f,l;
- SPInt slen = len;
- const char *s = b;
- do {
- f = (SPInt)OVR_tolower((int)(*(a++)));
- l = (SPInt)OVR_tolower((int)(*(b++)));
- } while (--len && f && (f == l) && *b != 0);
-
- if (f == l && (len != 0 || *b != 0))
- {
- f = (SPInt)slen;
- l = (SPInt)OVR_strlen(s);
- return int(f - l);
- }
-
- return int(f - l);
- }
- else
- return (0-(int)OVR_strlen(b));
-}
-
-// ***** Implement hash static functions
-
-// Hash function
-UPInt String::BernsteinHashFunction(const void* pdataIn, UPInt size, UPInt seed)
-{
- const UByte* pdata = (const UByte*) pdataIn;
- UPInt h = seed;
- while (size > 0)
- {
- size--;
- h = ((h << 5) + h) ^ (unsigned) pdata[size];
- }
-
- return h;
-}
-
-// Hash function, case-insensitive
-UPInt String::BernsteinHashFunctionCIS(const void* pdataIn, UPInt size, UPInt seed)
-{
- const UByte* pdata = (const UByte*) pdataIn;
- UPInt h = seed;
- while (size > 0)
- {
- size--;
- h = ((h << 5) + h) ^ OVR_tolower(pdata[size]);
- }
-
- // Alternative: "sdbm" hash function, suggested at same web page above.
- // h = 0;
- // for bytes { h = (h << 16) + (h << 6) - hash + *p; }
- return h;
-}
-
-
-
-// ***** String Buffer used for Building Strings
-
-
-#define OVR_SBUFF_DEFAULT_GROW_SIZE 512
-// Constructors / Destructor.
-StringBuffer::StringBuffer()
- : pData(NULL), Size(0), BufferSize(0), GrowSize(OVR_SBUFF_DEFAULT_GROW_SIZE), LengthIsSize(false)
-{
-}
-
-StringBuffer::StringBuffer(UPInt growSize)
- : pData(NULL), Size(0), BufferSize(0), GrowSize(OVR_SBUFF_DEFAULT_GROW_SIZE), LengthIsSize(false)
-{
- SetGrowSize(growSize);
-}
-
-StringBuffer::StringBuffer(const char* data)
- : pData(NULL), Size(0), BufferSize(0), GrowSize(OVR_SBUFF_DEFAULT_GROW_SIZE), LengthIsSize(false)
-{
- *this = data;
-}
-
-StringBuffer::StringBuffer(const char* data, UPInt dataSize)
- : pData(NULL), Size(0), BufferSize(0), GrowSize(OVR_SBUFF_DEFAULT_GROW_SIZE), LengthIsSize(false)
-{
- AppendString(data, dataSize);
-}
-
-StringBuffer::StringBuffer(const String& src)
- : pData(NULL), Size(0), BufferSize(0), GrowSize(OVR_SBUFF_DEFAULT_GROW_SIZE), LengthIsSize(false)
-{
- AppendString(src.ToCStr(), src.GetSize());
-}
-
-StringBuffer::StringBuffer(const StringBuffer& src)
- : pData(NULL), Size(0), BufferSize(src.GetGrowSize()), GrowSize(OVR_SBUFF_DEFAULT_GROW_SIZE), LengthIsSize(false)
-{
- AppendString(src.ToCStr(), src.GetSize());
- LengthIsSize = src.LengthIsSize;
-}
-
-StringBuffer::StringBuffer(const wchar_t* data)
- : pData(NULL), Size(0), BufferSize(0), GrowSize(OVR_SBUFF_DEFAULT_GROW_SIZE), LengthIsSize(false)
-{
- *this = data;
-}
-
-StringBuffer::~StringBuffer()
-{
- if (pData)
- OVR_FREE(pData);
-}
-void StringBuffer::SetGrowSize(UPInt growSize)
-{
- if (growSize <= 16)
- GrowSize = 16;
- else
- {
- UByte bits = Alg::UpperBit(UInt32(growSize-1));
- UPInt size = 1<<bits;
- GrowSize = size == growSize ? growSize : size;
- }
-}
-
-UPInt StringBuffer::GetLength() const
-{
- UPInt length, size = GetSize();
- if (LengthIsSize)
- return size;
-
- length = (UPInt)UTF8Util::GetLength(pData, (UPInt)GetSize());
-
- if (length == GetSize())
- LengthIsSize = true;
- return length;
-}
-
-void StringBuffer::Reserve(UPInt _size)
-{
- if (_size >= BufferSize) // >= because of trailing zero! (!AB)
- {
- BufferSize = (_size + 1 + GrowSize - 1)& ~(GrowSize-1);
- if (!pData)
- pData = (char*)OVR_ALLOC(BufferSize);
- else
- pData = (char*)OVR_REALLOC(pData, BufferSize);
- }
-}
-void StringBuffer::Resize(UPInt _size)
-{
- Reserve(_size);
- LengthIsSize = false;
- Size = _size;
- if (pData)
- pData[Size] = 0;
-}
-
-void StringBuffer::Clear()
-{
- Resize(0);
- /*
- if (pData != pEmptyNullData)
- {
- OVR_FREE(pHeap, pData);
- pData = pEmptyNullData;
- Size = BufferSize = 0;
- LengthIsSize = false;
- }
- */
-}
-// Appends a character
-void StringBuffer::AppendChar(UInt32 ch)
-{
- char buff[8];
- UPInt origSize = GetSize();
-
- // Converts ch into UTF8 string and fills it into buff. Also increments index according to the number of bytes
- // in the UTF8 string.
- SPInt srcSize = 0;
- UTF8Util::EncodeChar(buff, &srcSize, ch);
- OVR_ASSERT(srcSize >= 0);
-
- UPInt size = origSize + srcSize;
- Resize(size);
- memcpy(pData + origSize, buff, srcSize);
-}
-
-// Append a string
-void StringBuffer::AppendString(const wchar_t* pstr, SPInt len)
-{
- if (!pstr)
- return;
-
- SPInt srcSize = UTF8Util::GetEncodeStringSize(pstr, len);
- UPInt origSize = GetSize();
- UPInt size = srcSize + origSize;
-
- Resize(size);
- UTF8Util::EncodeString(pData + origSize, pstr, len);
-}
-
-void StringBuffer::AppendString(const char* putf8str, SPInt utf8StrSz)
-{
- if (!putf8str || !utf8StrSz)
- return;
- if (utf8StrSz == -1)
- utf8StrSz = (SPInt)OVR_strlen(putf8str);
-
- UPInt origSize = GetSize();
- UPInt size = utf8StrSz + origSize;
-
- Resize(size);
- memcpy(pData + origSize, putf8str, utf8StrSz);
-}
-
-
-void StringBuffer::operator = (const char* pstr)
-{
- pstr = pstr ? pstr : "";
- UPInt size = OVR_strlen(pstr);
- Resize(size);
- memcpy(pData, pstr, size);
-}
-
-void StringBuffer::operator = (const wchar_t* pstr)
-{
- pstr = pstr ? pstr : L"";
- UPInt size = (UPInt)UTF8Util::GetEncodeStringSize(pstr);
- Resize(size);
- UTF8Util::EncodeString(pData, pstr);
-}
-
-void StringBuffer::operator = (const String& src)
-{
- Resize(src.GetSize());
- memcpy(pData, src.ToCStr(), src.GetSize());
-}
-
-
-// Inserts substr at posAt
-void StringBuffer::Insert(const char* substr, UPInt posAt, SPInt len)
-{
- UPInt oldSize = Size;
- UPInt insertSize = (len < 0) ? OVR_strlen(substr) : (UPInt)len;
- UPInt byteIndex = LengthIsSize ? posAt :
- (UPInt)UTF8Util::GetByteIndex(posAt, pData, (SPInt)Size);
-
- OVR_ASSERT(byteIndex <= oldSize);
- Reserve(oldSize + insertSize);
-
- memmove(pData + byteIndex + insertSize, pData + byteIndex, oldSize - byteIndex + 1);
- memcpy (pData + byteIndex, substr, insertSize);
- LengthIsSize = false;
- Size = oldSize + insertSize;
- pData[Size] = 0;
-}
-
-// Inserts character at posAt
-UPInt StringBuffer::InsertCharAt(UInt32 c, UPInt posAt)
-{
- char buf[8];
- SPInt len = 0;
- UTF8Util::EncodeChar(buf, &len, c);
- OVR_ASSERT(len >= 0);
- buf[(UPInt)len] = 0;
-
- Insert(buf, posAt, len);
- return (UPInt)len;
-}
-
-} // OVR
+/************************************************************************************ + +Filename : OVR_String.cpp +Content : String UTF8 string implementation with copy-on-write semantics + (thread-safe for assignment but not modification). +Created : September 19, 2012 +Notes : + +Copyright : Copyright 2012 Oculus VR, Inc. All Rights reserved. + +Use of this software is subject to the terms of the Oculus license +agreement provided at the time of installation or download, or which +otherwise accompanies this software in either electronic or hard copy form. + +************************************************************************************/ + +#include "OVR_String.h" + +#include <stdlib.h> +#include <ctype.h> + +#ifdef OVR_OS_QNX +# include <strings.h> +#endif + +namespace OVR { + +#define String_LengthIsSize (UPInt(1) << String::Flag_LengthIsSizeShift) + +String::DataDesc String::NullData = {String_LengthIsSize, 1, {0} }; + + +String::String() +{ + pData = &NullData; + pData->AddRef(); +}; + +String::String(const char* pdata) +{ + // Obtain length in bytes; it doesn't matter if _data is UTF8. + UPInt size = pdata ? OVR_strlen(pdata) : 0; + pData = AllocDataCopy1(size, 0, pdata, size); +}; + +String::String(const char* pdata1, const char* pdata2, const char* pdata3) +{ + // Obtain length in bytes; it doesn't matter if _data is UTF8. + UPInt size1 = pdata1 ? OVR_strlen(pdata1) : 0; + UPInt size2 = pdata2 ? OVR_strlen(pdata2) : 0; + UPInt size3 = pdata3 ? OVR_strlen(pdata3) : 0; + + DataDesc *pdataDesc = AllocDataCopy2(size1 + size2 + size3, 0, + pdata1, size1, pdata2, size2); + memcpy(pdataDesc->Data + size1 + size2, pdata3, size3); + pData = pdataDesc; +} + +String::String(const char* pdata, UPInt size) +{ + OVR_ASSERT((size == 0) || (pdata != 0)); + pData = AllocDataCopy1(size, 0, pdata, size); +}; + + +String::String(const InitStruct& src, UPInt size) +{ + pData = AllocData(size, 0); + src.InitString(GetData()->Data, size); +} + +String::String(const String& src) +{ + pData = src.GetData(); + pData->AddRef(); +} + +String::String(const StringBuffer& src) +{ + pData = AllocDataCopy1(src.GetSize(), 0, src.ToCStr(), src.GetSize()); +} + +String::String(const wchar_t* data) +{ + pData = &NullData; + pData->AddRef(); + // Simplified logic for wchar_t constructor. + if (data) + *this = data; +} + + +String::DataDesc* String::AllocData(UPInt size, UPInt lengthIsSize) +{ + String::DataDesc* pdesc; + + if (size == 0) + { + pdesc = &NullData; + pdesc->AddRef(); + return pdesc; + } + + pdesc = (DataDesc*)OVR_ALLOC(sizeof(DataDesc)+ size); + pdesc->Data[size] = 0; + pdesc->RefCount = 1; + pdesc->Size = size | lengthIsSize; + return pdesc; +} + + +String::DataDesc* String::AllocDataCopy1(UPInt size, UPInt lengthIsSize, + const char* pdata, UPInt copySize) +{ + String::DataDesc* pdesc = AllocData(size, lengthIsSize); + memcpy(pdesc->Data, pdata, copySize); + return pdesc; +} + +String::DataDesc* String::AllocDataCopy2(UPInt size, UPInt lengthIsSize, + const char* pdata1, UPInt copySize1, + const char* pdata2, UPInt copySize2) +{ + String::DataDesc* pdesc = AllocData(size, lengthIsSize); + memcpy(pdesc->Data, pdata1, copySize1); + memcpy(pdesc->Data + copySize1, pdata2, copySize2); + return pdesc; +} + + +UPInt String::GetLength() const +{ + // Optimize length accesses for non-UTF8 character strings. + DataDesc* pdata = GetData(); + UPInt length, size = pdata->GetSize(); + + if (pdata->LengthIsSize()) + return size; + + length = (UPInt)UTF8Util::GetLength(pdata->Data, (UPInt)size); + + if (length == size) + pdata->Size |= String_LengthIsSize; + + return length; +} + + +//static UInt32 String_CharSearch(const char* buf, ) + + +UInt32 String::GetCharAt(UPInt index) const +{ + SPInt i = (SPInt) index; + DataDesc* pdata = GetData(); + const char* buf = pdata->Data; + UInt32 c; + + if (pdata->LengthIsSize()) + { + OVR_ASSERT(index < pdata->GetSize()); + buf += i; + return UTF8Util::DecodeNextChar_Advance0(&buf); + } + + c = UTF8Util::GetCharAt(index, buf, pdata->GetSize()); + return c; +} + +UInt32 String::GetFirstCharAt(UPInt index, const char** offset) const +{ + DataDesc* pdata = GetData(); + SPInt i = (SPInt) index; + const char* buf = pdata->Data; + const char* end = buf + pdata->GetSize(); + UInt32 c; + + do + { + c = UTF8Util::DecodeNextChar_Advance0(&buf); + i--; + + if (buf >= end) + { + // We've hit the end of the string; don't go further. + OVR_ASSERT(i == 0); + return c; + } + } while (i >= 0); + + *offset = buf; + + return c; +} + +UInt32 String::GetNextChar(const char** offset) const +{ + return UTF8Util::DecodeNextChar(offset); +} + + + +void String::AppendChar(UInt32 ch) +{ + DataDesc* pdata = GetData(); + UPInt size = pdata->GetSize(); + char buff[8]; + SPInt encodeSize = 0; + + // Converts ch into UTF8 string and fills it into buff. + UTF8Util::EncodeChar(buff, &encodeSize, ch); + OVR_ASSERT(encodeSize >= 0); + + SetData(AllocDataCopy2(size + (UPInt)encodeSize, 0, + pdata->Data, size, buff, (UPInt)encodeSize)); + pdata->Release(); +} + + +void String::AppendString(const wchar_t* pstr, SPInt len) +{ + if (!pstr) + return; + + DataDesc* pdata = GetData(); + UPInt oldSize = pdata->GetSize(); + UPInt encodeSize = (UPInt)UTF8Util::GetEncodeStringSize(pstr, len); + + DataDesc* pnewData = AllocDataCopy1(oldSize + (UPInt)encodeSize, 0, + pdata->Data, oldSize); + UTF8Util::EncodeString(pnewData->Data + oldSize, pstr, len); + + SetData(pnewData); + pdata->Release(); +} + + +void String::AppendString(const char* putf8str, SPInt utf8StrSz) +{ + if (!putf8str || !utf8StrSz) + return; + if (utf8StrSz == -1) + utf8StrSz = (SPInt)OVR_strlen(putf8str); + + DataDesc* pdata = GetData(); + UPInt oldSize = pdata->GetSize(); + + SetData(AllocDataCopy2(oldSize + (UPInt)utf8StrSz, 0, + pdata->Data, oldSize, putf8str, (UPInt)utf8StrSz)); + pdata->Release(); +} + +void String::AssignString(const InitStruct& src, UPInt size) +{ + DataDesc* poldData = GetData(); + DataDesc* pnewData = AllocData(size, 0); + src.InitString(pnewData->Data, size); + SetData(pnewData); + poldData->Release(); +} + +void String::AssignString(const char* putf8str, UPInt size) +{ + DataDesc* poldData = GetData(); + SetData(AllocDataCopy1(size, 0, putf8str, size)); + poldData->Release(); +} + +void String::operator = (const char* pstr) +{ + AssignString(pstr, pstr ? OVR_strlen(pstr) : 0); +} + +void String::operator = (const wchar_t* pwstr) +{ + DataDesc* poldData = GetData(); + UPInt size = pwstr ? (UPInt)UTF8Util::GetEncodeStringSize(pwstr) : 0; + + DataDesc* pnewData = AllocData(size, 0); + UTF8Util::EncodeString(pnewData->Data, pwstr); + SetData(pnewData); + poldData->Release(); +} + + +void String::operator = (const String& src) +{ + DataDesc* psdata = src.GetData(); + DataDesc* pdata = GetData(); + + SetData(psdata); + psdata->AddRef(); + pdata->Release(); +} + + +void String::operator = (const StringBuffer& src) +{ + DataDesc* polddata = GetData(); + SetData(AllocDataCopy1(src.GetSize(), 0, src.ToCStr(), src.GetSize())); + polddata->Release(); +} + +void String::operator += (const String& src) +{ + DataDesc *pourData = GetData(), + *psrcData = src.GetData(); + UPInt ourSize = pourData->GetSize(), + srcSize = psrcData->GetSize(); + UPInt lflag = pourData->GetLengthFlag() & psrcData->GetLengthFlag(); + + SetData(AllocDataCopy2(ourSize + srcSize, lflag, + pourData->Data, ourSize, psrcData->Data, srcSize)); + pourData->Release(); +} + + +String String::operator + (const char* str) const +{ + String tmp1(*this); + tmp1 += (str ? str : ""); + return tmp1; +} + +String String::operator + (const String& src) const +{ + String tmp1(*this); + tmp1 += src; + return tmp1; +} + +void String::Remove(UPInt posAt, SPInt removeLength) +{ + DataDesc* pdata = GetData(); + UPInt oldSize = pdata->GetSize(); + // Length indicates the number of characters to remove. + UPInt length = GetLength(); + + // If index is past the string, nothing to remove. + if (posAt >= length) + return; + // Otherwise, cap removeLength to the length of the string. + if ((posAt + removeLength) > length) + removeLength = length - posAt; + + // Get the byte position of the UTF8 char at position posAt. + SPInt bytePos = UTF8Util::GetByteIndex(posAt, pdata->Data, oldSize); + SPInt removeSize = UTF8Util::GetByteIndex(removeLength, pdata->Data + bytePos, oldSize-bytePos); + + SetData(AllocDataCopy2(oldSize - removeSize, pdata->GetLengthFlag(), + pdata->Data, bytePos, + pData->Data + bytePos + removeSize, (oldSize - bytePos - removeSize))); + pdata->Release(); +} + + +String String::Substring(UPInt start, UPInt end) const +{ + UPInt length = GetLength(); + if ((start >= length) || (start >= end)) + return String(); + + DataDesc* pdata = GetData(); + + // If size matches, we know the exact index range. + if (pdata->LengthIsSize()) + return String(pdata->Data + start, end - start); + + // Get position of starting character. + SPInt byteStart = UTF8Util::GetByteIndex(start, pdata->Data, pdata->GetSize()); + SPInt byteSize = UTF8Util::GetByteIndex(end - start, pdata->Data + byteStart, pdata->GetSize()-byteStart); + return String(pdata->Data + byteStart, (UPInt)byteSize); +} + +void String::Clear() +{ + NullData.AddRef(); + GetData()->Release(); + SetData(&NullData); +} + + +String String::ToUpper() const +{ + UInt32 c; + const char* psource = GetData()->Data; + const char* pend = psource + GetData()->GetSize(); + String str; + SPInt bufferOffset = 0; + char buffer[512]; + + while(psource < pend) + { + do { + c = UTF8Util::DecodeNextChar_Advance0(&psource); + UTF8Util::EncodeChar(buffer, &bufferOffset, OVR_towupper(wchar_t(c))); + } while ((psource < pend) && (bufferOffset < SPInt(sizeof(buffer)-8))); + + // Append string a piece at a time. + str.AppendString(buffer, bufferOffset); + bufferOffset = 0; + } + + return str; +} + +String String::ToLower() const +{ + UInt32 c; + const char* psource = GetData()->Data; + const char* pend = psource + GetData()->GetSize(); + String str; + SPInt bufferOffset = 0; + char buffer[512]; + + while(psource < pend) + { + do { + c = UTF8Util::DecodeNextChar_Advance0(&psource); + UTF8Util::EncodeChar(buffer, &bufferOffset, OVR_towlower(wchar_t(c))); + } while ((psource < pend) && (bufferOffset < SPInt(sizeof(buffer)-8))); + + // Append string a piece at a time. + str.AppendString(buffer, bufferOffset); + bufferOffset = 0; + } + + return str; +} + + + +String& String::Insert(const char* substr, UPInt posAt, SPInt strSize) +{ + DataDesc* poldData = GetData(); + UPInt oldSize = poldData->GetSize(); + UPInt insertSize = (strSize < 0) ? OVR_strlen(substr) : (UPInt)strSize; + UPInt byteIndex = (poldData->LengthIsSize()) ? + posAt : (UPInt)UTF8Util::GetByteIndex(posAt, poldData->Data, oldSize); + + OVR_ASSERT(byteIndex <= oldSize); + + DataDesc* pnewData = AllocDataCopy2(oldSize + insertSize, 0, + poldData->Data, byteIndex, substr, insertSize); + memcpy(pnewData->Data + byteIndex + insertSize, + poldData->Data + byteIndex, oldSize - byteIndex); + SetData(pnewData); + poldData->Release(); + return *this; +} + +/* +String& String::Insert(const UInt32* substr, UPInt posAt, SPInt len) +{ + for (SPInt i = 0; i < len; ++i) + { + UPInt charw = InsertCharAt(substr[i], posAt); + posAt += charw; + } + return *this; +} +*/ + +UPInt String::InsertCharAt(UInt32 c, UPInt posAt) +{ + char buf[8]; + SPInt index = 0; + UTF8Util::EncodeChar(buf, &index, c); + OVR_ASSERT(index >= 0); + buf[(UPInt)index] = 0; + + Insert(buf, posAt, index); + return (UPInt)index; +} + + +int String::CompareNoCase(const char* a, const char* b) +{ + return OVR_stricmp(a, b); +} + +int String::CompareNoCase(const char* a, const char* b, SPInt len) +{ + if (len) + { + SPInt f,l; + SPInt slen = len; + const char *s = b; + do { + f = (SPInt)OVR_tolower((int)(*(a++))); + l = (SPInt)OVR_tolower((int)(*(b++))); + } while (--len && f && (f == l) && *b != 0); + + if (f == l && (len != 0 || *b != 0)) + { + f = (SPInt)slen; + l = (SPInt)OVR_strlen(s); + return int(f - l); + } + + return int(f - l); + } + else + return (0-(int)OVR_strlen(b)); +} + +// ***** Implement hash static functions + +// Hash function +UPInt String::BernsteinHashFunction(const void* pdataIn, UPInt size, UPInt seed) +{ + const UByte* pdata = (const UByte*) pdataIn; + UPInt h = seed; + while (size > 0) + { + size--; + h = ((h << 5) + h) ^ (unsigned) pdata[size]; + } + + return h; +} + +// Hash function, case-insensitive +UPInt String::BernsteinHashFunctionCIS(const void* pdataIn, UPInt size, UPInt seed) +{ + const UByte* pdata = (const UByte*) pdataIn; + UPInt h = seed; + while (size > 0) + { + size--; + h = ((h << 5) + h) ^ OVR_tolower(pdata[size]); + } + + // Alternative: "sdbm" hash function, suggested at same web page above. + // h = 0; + // for bytes { h = (h << 16) + (h << 6) - hash + *p; } + return h; +} + + + +// ***** String Buffer used for Building Strings + + +#define OVR_SBUFF_DEFAULT_GROW_SIZE 512 +// Constructors / Destructor. +StringBuffer::StringBuffer() + : pData(NULL), Size(0), BufferSize(0), GrowSize(OVR_SBUFF_DEFAULT_GROW_SIZE), LengthIsSize(false) +{ +} + +StringBuffer::StringBuffer(UPInt growSize) + : pData(NULL), Size(0), BufferSize(0), GrowSize(OVR_SBUFF_DEFAULT_GROW_SIZE), LengthIsSize(false) +{ + SetGrowSize(growSize); +} + +StringBuffer::StringBuffer(const char* data) + : pData(NULL), Size(0), BufferSize(0), GrowSize(OVR_SBUFF_DEFAULT_GROW_SIZE), LengthIsSize(false) +{ + *this = data; +} + +StringBuffer::StringBuffer(const char* data, UPInt dataSize) + : pData(NULL), Size(0), BufferSize(0), GrowSize(OVR_SBUFF_DEFAULT_GROW_SIZE), LengthIsSize(false) +{ + AppendString(data, dataSize); +} + +StringBuffer::StringBuffer(const String& src) + : pData(NULL), Size(0), BufferSize(0), GrowSize(OVR_SBUFF_DEFAULT_GROW_SIZE), LengthIsSize(false) +{ + AppendString(src.ToCStr(), src.GetSize()); +} + +StringBuffer::StringBuffer(const StringBuffer& src) + : pData(NULL), Size(0), BufferSize(src.GetGrowSize()), GrowSize(OVR_SBUFF_DEFAULT_GROW_SIZE), LengthIsSize(false) +{ + AppendString(src.ToCStr(), src.GetSize()); + LengthIsSize = src.LengthIsSize; +} + +StringBuffer::StringBuffer(const wchar_t* data) + : pData(NULL), Size(0), BufferSize(0), GrowSize(OVR_SBUFF_DEFAULT_GROW_SIZE), LengthIsSize(false) +{ + *this = data; +} + +StringBuffer::~StringBuffer() +{ + if (pData) + OVR_FREE(pData); +} +void StringBuffer::SetGrowSize(UPInt growSize) +{ + if (growSize <= 16) + GrowSize = 16; + else + { + UByte bits = Alg::UpperBit(UInt32(growSize-1)); + UPInt size = 1<<bits; + GrowSize = size == growSize ? growSize : size; + } +} + +UPInt StringBuffer::GetLength() const +{ + UPInt length, size = GetSize(); + if (LengthIsSize) + return size; + + length = (UPInt)UTF8Util::GetLength(pData, (UPInt)GetSize()); + + if (length == GetSize()) + LengthIsSize = true; + return length; +} + +void StringBuffer::Reserve(UPInt _size) +{ + if (_size >= BufferSize) // >= because of trailing zero! (!AB) + { + BufferSize = (_size + 1 + GrowSize - 1)& ~(GrowSize-1); + if (!pData) + pData = (char*)OVR_ALLOC(BufferSize); + else + pData = (char*)OVR_REALLOC(pData, BufferSize); + } +} +void StringBuffer::Resize(UPInt _size) +{ + Reserve(_size); + LengthIsSize = false; + Size = _size; + if (pData) + pData[Size] = 0; +} + +void StringBuffer::Clear() +{ + Resize(0); + /* + if (pData != pEmptyNullData) + { + OVR_FREE(pHeap, pData); + pData = pEmptyNullData; + Size = BufferSize = 0; + LengthIsSize = false; + } + */ +} +// Appends a character +void StringBuffer::AppendChar(UInt32 ch) +{ + char buff[8]; + UPInt origSize = GetSize(); + + // Converts ch into UTF8 string and fills it into buff. Also increments index according to the number of bytes + // in the UTF8 string. + SPInt srcSize = 0; + UTF8Util::EncodeChar(buff, &srcSize, ch); + OVR_ASSERT(srcSize >= 0); + + UPInt size = origSize + srcSize; + Resize(size); + memcpy(pData + origSize, buff, srcSize); +} + +// Append a string +void StringBuffer::AppendString(const wchar_t* pstr, SPInt len) +{ + if (!pstr) + return; + + SPInt srcSize = UTF8Util::GetEncodeStringSize(pstr, len); + UPInt origSize = GetSize(); + UPInt size = srcSize + origSize; + + Resize(size); + UTF8Util::EncodeString(pData + origSize, pstr, len); +} + +void StringBuffer::AppendString(const char* putf8str, SPInt utf8StrSz) +{ + if (!putf8str || !utf8StrSz) + return; + if (utf8StrSz == -1) + utf8StrSz = (SPInt)OVR_strlen(putf8str); + + UPInt origSize = GetSize(); + UPInt size = utf8StrSz + origSize; + + Resize(size); + memcpy(pData + origSize, putf8str, utf8StrSz); +} + + +void StringBuffer::operator = (const char* pstr) +{ + pstr = pstr ? pstr : ""; + UPInt size = OVR_strlen(pstr); + Resize(size); + memcpy(pData, pstr, size); +} + +void StringBuffer::operator = (const wchar_t* pstr) +{ + pstr = pstr ? pstr : L""; + UPInt size = (UPInt)UTF8Util::GetEncodeStringSize(pstr); + Resize(size); + UTF8Util::EncodeString(pData, pstr); +} + +void StringBuffer::operator = (const String& src) +{ + Resize(src.GetSize()); + memcpy(pData, src.ToCStr(), src.GetSize()); +} + + +// Inserts substr at posAt +void StringBuffer::Insert(const char* substr, UPInt posAt, SPInt len) +{ + UPInt oldSize = Size; + UPInt insertSize = (len < 0) ? OVR_strlen(substr) : (UPInt)len; + UPInt byteIndex = LengthIsSize ? posAt : + (UPInt)UTF8Util::GetByteIndex(posAt, pData, (SPInt)Size); + + OVR_ASSERT(byteIndex <= oldSize); + Reserve(oldSize + insertSize); + + memmove(pData + byteIndex + insertSize, pData + byteIndex, oldSize - byteIndex + 1); + memcpy (pData + byteIndex, substr, insertSize); + LengthIsSize = false; + Size = oldSize + insertSize; + pData[Size] = 0; +} + +// Inserts character at posAt +UPInt StringBuffer::InsertCharAt(UInt32 c, UPInt posAt) +{ + char buf[8]; + SPInt len = 0; + UTF8Util::EncodeChar(buf, &len, c); + OVR_ASSERT(len >= 0); + buf[(UPInt)len] = 0; + + Insert(buf, posAt, len); + return (UPInt)len; +} + +} // OVR |