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some refactoring

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This commit is contained in:
Eduardo Bart
2012-06-21 20:58:18 -03:00
parent a7c17cec2e
commit c5674d10ba
23 changed files with 278 additions and 367 deletions
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199
src/framework/core/filestream.cpp
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@@ -21,118 +21,101 @@
*/
#include "filestream.h"
#include <framework/application.h>
#include <physfs.h>
FileStream::FileStream(const std::string& name, PHYSFS_File *fileHandle)
{
m_name = name;
m_pos = 0;
m_fileHandle = fileHandle;
m_cacheReadPos = 0;
}
FileStream::~FileStream()
{
assert(!g_app.isTermianted());
close();
}
void FileStream::cache()
{
if(!m_fileHandle)
g_logger.traceError("no file handle to cache");
return;
// cache entire file into cache buffer
m_cacheReadPos = PHYSFS_tell(m_fileHandle);
// cache entire file into data buffer
m_pos = PHYSFS_tell(m_fileHandle);
PHYSFS_seek(m_fileHandle, 0);
int size = PHYSFS_fileLength(m_fileHandle);
m_cacheBuffer.resize(size);
int res = PHYSFS_read(m_fileHandle, &m_cacheBuffer[0], size, 1);
m_data.resize(size);
int res = PHYSFS_read(m_fileHandle, &m_data[0], size, 1);
if(res == -1)
g_logger.traceError(stdext::format("operation failed on '%s': %s", m_name, PHYSFS_getLastError()));
throwError("unable to read file data");
PHYSFS_close(m_fileHandle);
m_fileHandle = nullptr;
close();
}
bool FileStream::close()
void FileStream::close()
{
if(m_fileHandle) {
if(PHYSFS_isInit() && PHYSFS_close(m_fileHandle) == 0)
g_logger.traceError(stdext::format("operation failed on '%s': %s", m_name, PHYSFS_getLastError()));
if(!PHYSFS_close(m_fileHandle))
throwError("close failed");
m_fileHandle = nullptr;
return true;
} else {
m_cacheBuffer.clear();
m_cacheReadPos = 0;
return true;
m_data.clear();
m_pos = 0;
}
}
bool FileStream::flush()
void FileStream::flush()
{
if(!m_fileHandle)
return false;
if(PHYSFS_flush(m_fileHandle) == 0) {
g_logger.traceError(stdext::format("operation failed on '%s': %s", m_name, PHYSFS_getLastError()));
return false;
}
return true;
if(m_fileHandle && PHYSFS_flush(m_fileHandle) == 0)
throwError("flush failed");
}
int FileStream::read(void *buffer, int size, int nmemb)
int FileStream::read(void *buffer, uint32 size, uint32 nmemb)
{
if(m_fileHandle) {
int res = PHYSFS_read(m_fileHandle, buffer, size, nmemb);
if(res == -1) {
g_logger.traceError(stdext::format("operation failed on '%s': %s", m_name, PHYSFS_getLastError()));
return 0;
}
if(res == -1)
throwError("read failed");
return res;
} else {
uint maxReadPos = m_cacheBuffer.size()-1;
uint maxReadPos = m_data.size()-1;
int writePos = 0;
uint8 *outBuffer = (uint8*)buffer;
for(int i=0;i<nmemb;++i) {
if(m_cacheReadPos+size > maxReadPos)
for(uint i=0;i<nmemb;++i) {
if(m_pos+size > maxReadPos)
return i;
for(int j=0;j<size;++j)
outBuffer[writePos++] = m_cacheBuffer[m_cacheReadPos++];
for(uint j=0;j<size;++j)
outBuffer[writePos++] = m_data[m_pos++];
}
return nmemb;
}
}
bool FileStream::write(void *buffer, int count)
void FileStream::write(void *buffer, uint32 count)
{
if(!m_fileHandle)
return false;
if(PHYSFS_write(m_fileHandle, buffer, 1, count) != count) {
g_logger.traceError(stdext::format("operation failed on '%s': %s", m_name, PHYSFS_getLastError()));
return false;
}
return true;
if(PHYSFS_write(m_fileHandle, buffer, 1, count) != count)
throwError("write failed");
}
bool FileStream::seek(int pos)
void FileStream::seek(uint32 pos)
{
if(m_fileHandle) {
if(PHYSFS_seek(m_fileHandle, pos) == 0) {
g_logger.traceError(stdext::format("operation failed on '%s': %s", m_name, PHYSFS_getLastError()));
return false;
}
if(!PHYSFS_seek(m_fileHandle, pos))
throwError("seek failed");
} else {
if(pos > (int)m_cacheBuffer.size() || pos < 0) {
g_logger.traceError(stdext::format("operation failed on '%s': seek pos cannot be greater than file length", m_name));
return false;
}
m_cacheReadPos = pos;
if(pos > m_data.size())
throwError("seek failed");
m_pos = pos;
}
return true;
}
void FileStream::skip(uint len)
{
seek(tell() + len);
}
int FileStream::size()
@@ -140,7 +123,7 @@ int FileStream::size()
if(m_fileHandle)
return PHYSFS_fileLength(m_fileHandle);
else
return m_cacheBuffer.size();
return m_data.size();
}
int FileStream::tell()
@@ -148,7 +131,7 @@ int FileStream::tell()
if(m_fileHandle)
return PHYSFS_tell(m_fileHandle);
else
return m_cacheReadPos;
return m_pos;
}
uint8 FileStream::getU8()
@@ -156,15 +139,13 @@ uint8 FileStream::getU8()
uint8 v = 0;
if(m_fileHandle) {
if(PHYSFS_read(m_fileHandle, &v, 1, 1) != 1)
g_logger.traceError(stdext::format("operation failed on '%s': %s", m_name, PHYSFS_getLastError()));
throwError("read failed");
} else {
if(m_cacheReadPos+1 > m_cacheBuffer.size()) {
g_logger.traceError(stdext::format("operation failed on '%s': reached file eof", m_name));
return 0;
}
if(m_pos+1 > m_data.size())
throwError("read failed");
v = m_cacheBuffer[m_cacheReadPos];
m_cacheReadPos += 1;
v = m_data[m_pos];
m_pos += 1;
}
return v;
}
@@ -174,15 +155,13 @@ uint16 FileStream::getU16()
uint16 v = 0;
if(m_fileHandle) {
if(PHYSFS_readULE16(m_fileHandle, &v) == 0)
g_logger.traceError(stdext::format("operation failed on '%s': %s", m_name, PHYSFS_getLastError()));
throwError("read failed");
} else {
if(m_cacheReadPos+2 > m_cacheBuffer.size()) {
g_logger.traceError(stdext::format("operation failed on '%s': reached file eof", m_name));
return 0;
}
if(m_pos+2 > m_data.size())
throwError("read failed");
v = stdext::readLE16(&m_cacheBuffer[m_cacheReadPos]);
m_cacheReadPos += 2;
v = stdext::readLE16(&m_data[m_pos]);
m_pos += 2;
}
return v;
}
@@ -192,15 +171,13 @@ uint32 FileStream::getU32()
uint32 v = 0;
if(m_fileHandle) {
if(PHYSFS_readULE32(m_fileHandle, &v) == 0)
g_logger.traceError(stdext::format("operation failed on '%s': %s", m_name, PHYSFS_getLastError()));
throwError("read failed");
} else {
if(m_cacheReadPos+4 > m_cacheBuffer.size()) {
g_logger.traceError(stdext::format("operation failed on '%s': reached file eof", m_name));
return 0;
}
if(m_pos+4 > m_data.size())
throwError("read failed");
v = stdext::readLE32(&m_cacheBuffer[m_cacheReadPos]);
m_cacheReadPos += 4;
v = stdext::readLE32(&m_data[m_pos]);
m_pos += 4;
}
return v;
}
@@ -210,15 +187,12 @@ uint64 FileStream::getU64()
uint64 v = 0;
if(m_fileHandle) {
if(PHYSFS_readULE64(m_fileHandle, (PHYSFS_uint64*)&v) == 0)
g_logger.traceError(stdext::format("operation failed on '%s': %s", m_name, PHYSFS_getLastError()));
throwError("read failed");
} else {
if(m_cacheReadPos+8 > m_cacheBuffer.size()) {
g_logger.traceError(stdext::format("operation failed on '%s': reached file eof", m_name));
return 0;
}
v = stdext::readLE64(&m_cacheBuffer[m_cacheReadPos]);
m_cacheReadPos += 8;
if(m_pos+8 > m_data.size())
throwError("read failed");
v = stdext::readLE64(&m_data[m_pos]);
m_pos += 8;
}
return v;
}
@@ -235,66 +209,47 @@ std::string FileStream::getString()
else
str = std::string(buffer, len);
} else {
if(m_cacheReadPos+len > m_cacheBuffer.size()) {
if(m_pos+len > m_data.size()) {
g_logger.traceError(stdext::format("operation failed on '%s': reached file eof", m_name));
return 0;
}
str = std::string((char*)&m_cacheBuffer[m_cacheReadPos], len);
m_cacheReadPos += len;
str = std::string((char*)&m_data[m_pos], len);
m_pos += len;
}
} else {
g_logger.traceError(stdext::format("operation failed on '%s': %s", m_name, PHYSFS_getLastError()));
}
return str;
}
uint8 FileStream::readFirstNode(uint32& type)
{
dump << "first";
uint8 node = getU8();
if(node != NODE_START)
stdext::throw_exception("failed to read first node");
type = getU32();
return node;
}
uint8 FileStream::readNextNode(uint8 oldNode, uint32& type)
{
dump << "next";
// end of old node
if(getU8() != NODE_END)
stdext::throw_exception("node not ended");
// next node
uint8 node = getU8();
if(oldNode != NODE_START)
stdext::throw_exception("invalid node start");
type = getU32();
return node;
}
void FileStream::addU8(uint8 v)
{
if(PHYSFS_write(m_fileHandle, &v, 1, 1) != 1)
g_logger.traceError(stdext::format("operation failed on '%s': %s", m_name, PHYSFS_getLastError()));
throwError("write failed");
}
void FileStream::addU16(uint8 v)
{
if(PHYSFS_writeULE16(m_fileHandle, v) == 0)
g_logger.traceError(stdext::format("operation failed on '%s': %s", m_name, PHYSFS_getLastError()));
throwError("write failed");
}
void FileStream::addU32(uint8 v)
{
if(PHYSFS_writeULE32(m_fileHandle, v) == 0)
g_logger.traceError(stdext::format("operation failed on '%s': %s", m_name, PHYSFS_getLastError()));
throwError("write failed");
}
void FileStream::addU64(uint8 v)
{
if(PHYSFS_writeULE64(m_fileHandle, v) == 0)
g_logger.traceError(stdext::format("operation failed on '%s': %s", m_name, PHYSFS_getLastError()));
throwError("write failed");
}
void FileStream::throwError(const std::string& message)
{
std::string completeMessage = stdext::format("in file '%s': %s", m_name, message);
if(m_fileHandle)
completeMessage += std::string(": ") + PHYSFS_getLastError();
stdext::throw_exception(completeMessage);
}