libAthena/athena
2
0
Fork 0
mirror of https://github.com/libAthena/athena.git synced 2025-12-09 21:47:52 +00:00
Code Issues Packages Projects Releases Wiki Activity

updated MemoryCopyWriter

Browse Source
This commit is contained in:
Jack Andersen
2015-07-07 20:34:59 -10:00
parent ec38ba088e
commit 44e25e09ca
2 changed files with 85 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

67
src/Athena/MemoryWriter.cpp
View File

@@ -31,8 +31,11 @@ MemoryWriter::MemoryWriter(atUint8* data, atUint64 length)
}
MemoryCopyWriter::MemoryCopyWriter(atUint8* data, atUint64 length)
: MemoryWriter(data, length)
{
m_data = data;
m_length = length;
m_position = 0;
if (length == 0)
THROW_INVALID_OPERATION_EXCEPTION("length cannot be 0");
@@ -58,6 +61,42 @@ MemoryCopyWriter::MemoryCopyWriter(const std::string& filename)
}
void MemoryWriter::seek(atInt64 position, SeekOrigin origin)
{
switch (origin)
{
case SeekOrigin::Begin:
if (position < 0)
THROW_IO_EXCEPTION("Position outside stream bounds");
if ((atUint64)position > m_length)
THROW_IO_EXCEPTION("data exceeds available buffer space");
m_position = position;
break;
case SeekOrigin::Current:
if ((((atInt64)m_position + position) < 0))
THROW_IO_EXCEPTION("Position outside stream bounds");
if (m_position + position > m_length)
THROW_IO_EXCEPTION("data exceeds available buffer space");
m_position += position;
break;
case SeekOrigin::End:
if (((atInt64)m_length - position) < 0)
THROW_IO_EXCEPTION("Position outside stream bounds");
if ((atUint64)position > m_length)
THROW_IO_EXCEPTION("data exceeds available buffer space");
m_position = m_length - position;
break;
}
}
void MemoryCopyWriter::seek(atInt64 position, SeekOrigin origin)
{
switch (origin)
{
@@ -155,9 +194,19 @@ void MemoryWriter::save(const std::string& filename)
void MemoryWriter::writeUBytes(const atUint8* data, atUint64 length)
{
if (!isOpen())
resize(sizeof(atUint8) * length);
if (!data)
THROW_INVALID_DATA_EXCEPTION("data cannnot be NULL");
if (m_position + length > m_length)
THROW_IO_EXCEPTION("data length exceeds available buffer space");
memcpy((atInt8*)(m_data + m_position), data, length);
m_position += length;
}
void MemoryCopyWriter::writeUBytes(const atUint8* data, atUint64 length)
{
if (!data)
THROW_INVALID_DATA_EXCEPTION("data cannnot be NULL");
@@ -169,7 +218,7 @@ void MemoryWriter::writeUBytes(const atUint8* data, atUint64 length)
m_position += length;
}
void MemoryWriter::resize(atUint64 newSize)
void MemoryCopyWriter::resize(atUint64 newSize)
{
if (newSize < m_length)
THROW_INVALID_OPERATION_EXCEPTION("Stream::resize() -> New size cannot be less to the old size.");
@@ -178,13 +227,9 @@ void MemoryWriter::resize(atUint64 newSize)
atUint8* newArray = new atUint8[newSize];
memset(newArray, 0, newSize);
if (m_data)
{
memcpy(newArray, m_data, m_length);
// Delete the old one
delete[] m_data;
}
if (m_dataCopy)
memcpy(newArray, m_dataCopy.get(), m_length);
m_dataCopy.reset(newArray);
// Swap the pointer and size out for the new ones.
m_data = newArray;