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-rw-r--r--core/src/fxcrt/fx_basic_buffer.cpp174
1 files changed, 76 insertions, 98 deletions
diff --git a/core/src/fxcrt/fx_basic_buffer.cpp b/core/src/fxcrt/fx_basic_buffer.cpp
index 4ef86bbf41..0551ef04de 100644
--- a/core/src/fxcrt/fx_basic_buffer.cpp
+++ b/core/src/fxcrt/fx_basic_buffer.cpp
@@ -5,208 +5,186 @@
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#include <algorithm>
+#include <limits>
#include "core/include/fxcrt/fx_basic.h"
+#include "core/include/fxcrt/fx_safe_types.h"
-FX_STRSIZE FX_ftoa(FX_FLOAT f, FX_CHAR* buf);
CFX_BinaryBuf::CFX_BinaryBuf()
- : m_AllocStep(0), m_pBuffer(NULL), m_DataSize(0), m_AllocSize(0) {}
+ : m_AllocStep(0), m_AllocSize(0), m_DataSize(0) {}
+
CFX_BinaryBuf::CFX_BinaryBuf(FX_STRSIZE size)
- : m_AllocStep(0), m_DataSize(size), m_AllocSize(size) {
- m_pBuffer = FX_Alloc(uint8_t, size);
-}
-CFX_BinaryBuf::~CFX_BinaryBuf() {
- FX_Free(m_pBuffer);
+ : m_AllocStep(0), m_AllocSize(size), m_DataSize(size) {
+ m_pBuffer.reset(FX_Alloc(uint8_t, size));
}
+
void CFX_BinaryBuf::Delete(int start_index, int count) {
- if (!m_pBuffer || start_index < 0 || start_index + count > m_DataSize) {
+ if (!m_pBuffer || start_index < 0 || count < 0 || count > m_DataSize ||
+ start_index > m_DataSize - count) {
return;
}
- FXSYS_memmove(m_pBuffer + start_index, m_pBuffer + start_index + count,
+ FXSYS_memmove(m_pBuffer.get() + start_index,
+ m_pBuffer.get() + start_index + count,
m_DataSize - start_index - count);
m_DataSize -= count;
}
+
void CFX_BinaryBuf::Clear() {
m_DataSize = 0;
}
-void CFX_BinaryBuf::DetachBuffer() {
+
+uint8_t* CFX_BinaryBuf::DetachBuffer() {
m_DataSize = 0;
- m_pBuffer = NULL;
m_AllocSize = 0;
+ return m_pBuffer.release();
}
-void CFX_BinaryBuf::AttachData(void* buffer, FX_STRSIZE size) {
- FX_Free(m_pBuffer);
+
+void CFX_BinaryBuf::AttachData(uint8_t* buffer, FX_STRSIZE size) {
+ m_pBuffer.reset(buffer);
m_DataSize = size;
- m_pBuffer = (uint8_t*)buffer;
m_AllocSize = size;
}
-void CFX_BinaryBuf::TakeOver(CFX_BinaryBuf& other) {
- AttachData(other.GetBuffer(), other.GetSize());
- other.DetachBuffer();
-}
+
void CFX_BinaryBuf::EstimateSize(FX_STRSIZE size, FX_STRSIZE step) {
m_AllocStep = step;
- if (m_AllocSize >= size) {
- return;
- }
- ExpandBuf(size - m_DataSize);
+ if (m_AllocSize < size)
+ ExpandBuf(size - m_DataSize);
}
+
void CFX_BinaryBuf::ExpandBuf(FX_STRSIZE add_size) {
- FX_STRSIZE new_size = add_size + m_DataSize;
- if (m_AllocSize >= new_size) {
+ FX_SAFE_STRSIZE new_size = m_DataSize;
+ new_size += add_size;
+ if (m_AllocSize >= new_size.ValueOrDie())
return;
- }
- int alloc_step;
- if (m_AllocStep == 0) {
- alloc_step = m_AllocSize / 4;
- if (alloc_step < 128) {
- alloc_step = 128;
- }
- } else {
- alloc_step = m_AllocStep;
- }
- new_size = (new_size + alloc_step - 1) / alloc_step * alloc_step;
- uint8_t* pNewBuffer = m_pBuffer;
- if (pNewBuffer) {
- pNewBuffer = FX_Realloc(uint8_t, m_pBuffer, new_size);
- } else {
- pNewBuffer = FX_Alloc(uint8_t, new_size);
- }
- m_pBuffer = pNewBuffer;
- m_AllocSize = new_size;
-}
-void CFX_BinaryBuf::CopyData(const void* pStr, FX_STRSIZE size) {
- if (size == 0) {
- m_DataSize = 0;
- return;
- }
- if (m_AllocSize < size) {
- ExpandBuf(size - m_DataSize);
- }
- if (!m_pBuffer) {
- return;
- }
- FXSYS_memcpy(m_pBuffer, pStr, size);
- m_DataSize = size;
+
+ int alloc_step = std::min(128, m_AllocStep ? m_AllocStep : m_AllocSize / 4);
+ new_size += alloc_step - 1; // Quantize, don't combine these lines.
+ new_size /= alloc_step;
+ new_size *= alloc_step;
+ m_AllocSize = new_size.ValueOrDie();
+ m_pBuffer.reset(m_pBuffer
+ ? FX_Realloc(uint8_t, m_pBuffer.release(), m_AllocSize)
+ : FX_Alloc(uint8_t, m_AllocSize));
}
+
void CFX_BinaryBuf::AppendBlock(const void* pBuf, FX_STRSIZE size) {
+ if (size <= 0)
+ return;
+
ExpandBuf(size);
- if (pBuf && m_pBuffer) {
- FXSYS_memcpy(m_pBuffer + m_DataSize, pBuf, size);
+ if (pBuf) {
+ FXSYS_memcpy(m_pBuffer.get() + m_DataSize, pBuf, size);
+ } else {
+ FXSYS_memset(m_pBuffer.get() + m_DataSize, 0, size);
}
m_DataSize += size;
}
+
void CFX_BinaryBuf::InsertBlock(FX_STRSIZE pos,
const void* pBuf,
FX_STRSIZE size) {
- ExpandBuf(size);
- if (!m_pBuffer) {
+ if (size <= 0)
return;
- }
- FXSYS_memmove(m_pBuffer + pos + size, m_pBuffer + pos, m_DataSize - pos);
+
+ ExpandBuf(size);
+ FXSYS_memmove(m_pBuffer.get() + pos + size, m_pBuffer.get() + pos,
+ m_DataSize - pos);
if (pBuf) {
- FXSYS_memcpy(m_pBuffer + pos, pBuf, size);
+ FXSYS_memcpy(m_pBuffer.get() + pos, pBuf, size);
+ } else {
+ FXSYS_memset(m_pBuffer.get() + pos, 0, size);
}
m_DataSize += size;
}
-void CFX_BinaryBuf::AppendFill(uint8_t byte, FX_STRSIZE count) {
- ExpandBuf(count);
- if (!m_pBuffer) {
- return;
- }
- FXSYS_memset(m_pBuffer + m_DataSize, byte, count);
- m_DataSize += count;
-}
-CFX_ByteStringC CFX_BinaryBuf::GetByteString() const {
- return CFX_ByteStringC(m_pBuffer, m_DataSize);
+
+CFX_ByteStringC CFX_ByteTextBuf::GetByteString() const {
+ return CFX_ByteStringC(m_pBuffer.get(), m_DataSize);
}
+
CFX_ByteTextBuf& CFX_ByteTextBuf::operator<<(const CFX_ByteStringC& lpsz) {
AppendBlock(lpsz.GetPtr(), lpsz.GetLength());
return *this;
}
+
CFX_ByteTextBuf& CFX_ByteTextBuf::operator<<(int i) {
char buf[32];
FXSYS_itoa(i, buf, 10);
AppendBlock(buf, FXSYS_strlen(buf));
return *this;
}
+
CFX_ByteTextBuf& CFX_ByteTextBuf::operator<<(FX_DWORD i) {
char buf[32];
FXSYS_itoa(i, buf, 10);
AppendBlock(buf, FXSYS_strlen(buf));
return *this;
}
+
CFX_ByteTextBuf& CFX_ByteTextBuf::operator<<(double f) {
char buf[32];
FX_STRSIZE len = FX_ftoa((FX_FLOAT)f, buf);
AppendBlock(buf, len);
return *this;
}
+
CFX_ByteTextBuf& CFX_ByteTextBuf::operator<<(const CFX_ByteTextBuf& buf) {
- AppendBlock(buf.m_pBuffer, buf.m_DataSize);
+ AppendBlock(buf.m_pBuffer.get(), buf.m_DataSize);
return *this;
}
-void CFX_ByteTextBuf::operator=(const CFX_ByteStringC& str) {
- CopyData(str.GetPtr(), str.GetLength());
-}
+
void CFX_WideTextBuf::AppendChar(FX_WCHAR ch) {
- if (m_AllocSize < m_DataSize + (FX_STRSIZE)sizeof(FX_WCHAR)) {
- ExpandBuf(sizeof(FX_WCHAR));
- }
- ASSERT(m_pBuffer);
- *(FX_WCHAR*)(m_pBuffer + m_DataSize) = ch;
+ ExpandBuf(sizeof(FX_WCHAR));
+ *(FX_WCHAR*)(m_pBuffer.get() + m_DataSize) = ch;
m_DataSize += sizeof(FX_WCHAR);
}
+
CFX_WideTextBuf& CFX_WideTextBuf::operator<<(const CFX_WideStringC& str) {
AppendBlock(str.GetPtr(), str.GetLength() * sizeof(FX_WCHAR));
return *this;
}
+
CFX_WideTextBuf& CFX_WideTextBuf::operator<<(const CFX_WideString& str) {
AppendBlock(str.c_str(), str.GetLength() * sizeof(FX_WCHAR));
return *this;
}
+
CFX_WideTextBuf& CFX_WideTextBuf::operator<<(int i) {
char buf[32];
FXSYS_itoa(i, buf, 10);
FX_STRSIZE len = FXSYS_strlen(buf);
- if (m_AllocSize < m_DataSize + (FX_STRSIZE)(len * sizeof(FX_WCHAR))) {
- ExpandBuf(len * sizeof(FX_WCHAR));
- }
- ASSERT(m_pBuffer);
- FX_WCHAR* str = (FX_WCHAR*)(m_pBuffer + m_DataSize);
+ ExpandBuf(len * sizeof(FX_WCHAR));
+ FX_WCHAR* str = (FX_WCHAR*)(m_pBuffer.get() + m_DataSize);
for (FX_STRSIZE j = 0; j < len; j++) {
*str++ = buf[j];
}
m_DataSize += len * sizeof(FX_WCHAR);
return *this;
}
+
CFX_WideTextBuf& CFX_WideTextBuf::operator<<(double f) {
char buf[32];
FX_STRSIZE len = FX_ftoa((FX_FLOAT)f, buf);
- if (m_AllocSize < m_DataSize + (FX_STRSIZE)(len * sizeof(FX_WCHAR))) {
- ExpandBuf(len * sizeof(FX_WCHAR));
- }
- ASSERT(m_pBuffer);
- FX_WCHAR* str = (FX_WCHAR*)(m_pBuffer + m_DataSize);
+ ExpandBuf(len * sizeof(FX_WCHAR));
+ FX_WCHAR* str = (FX_WCHAR*)(m_pBuffer.get() + m_DataSize);
for (FX_STRSIZE i = 0; i < len; i++) {
*str++ = buf[i];
}
m_DataSize += len * sizeof(FX_WCHAR);
return *this;
}
+
CFX_WideTextBuf& CFX_WideTextBuf::operator<<(const FX_WCHAR* lpsz) {
AppendBlock(lpsz, FXSYS_wcslen(lpsz) * sizeof(FX_WCHAR));
return *this;
}
+
CFX_WideTextBuf& CFX_WideTextBuf::operator<<(const CFX_WideTextBuf& buf) {
- AppendBlock(buf.m_pBuffer, buf.m_DataSize);
+ AppendBlock(buf.m_pBuffer.get(), buf.m_DataSize);
return *this;
}
-void CFX_WideTextBuf::operator=(const CFX_WideStringC& str) {
- CopyData(str.GetPtr(), str.GetLength() * sizeof(FX_WCHAR));
-}
+
CFX_WideStringC CFX_WideTextBuf::GetWideString() const {
- return CFX_WideStringC((const FX_WCHAR*)m_pBuffer,
+ return CFX_WideStringC((const FX_WCHAR*)m_pBuffer.get(),
m_DataSize / sizeof(FX_WCHAR));
}
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