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Merge pull request #118 from lioncash/chunk-file 

chunk_file: General cleanup
This commit is contained in:
bunnei 2014-09-22 22:02:51 -04:00
parent 07af9a587c ff442d6cf9
commit ee7cfc71bd
1 changed files with 0 additions and 244 deletions
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244
src/common/chunk_file.h
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@ -32,35 +32,10 @@
#include <string>
#include <list>
#include <set>
#ifndef __SYMBIAN32__
#if defined(IOS) || defined(MACGNUSTD)
#include <tr1/type_traits>
#else
#include <type_traits>
#endif
#endif
#include "common/common.h"
#include "common/file_util.h"
//#include "../ext/snappy/snappy-c.h"
#if defined(IOS) || defined(MACGNUSTD)
namespace std {
using tr1::is_pointer;
}
#endif
#ifdef __SYMBIAN32__
namespace std {
template <bool bool_value>
struct bool_constant {
typedef bool_constant<bool_value> type;
static const bool value = bool_value;
};
template <bool bool_value> const bool bool_constant<bool_value>::value;
template <typename T> struct is_pointer : public bool_constant<false> {};
template <typename T> struct is_pointer<T*> : public bool_constant<true> {};
}
#endif
template <class T>
struct LinkedListItem : public T
@ -651,222 +626,3 @@ inline PointerWrapSection::~PointerWrapSection() {
p_.DoMarker(title_);
}
}
// Commented out because it is currently unused, and breaks builds on OSX
/*class CChunkFileReader
{
public:
enum Error {
ERROR_NONE,
ERROR_BAD_FILE,
ERROR_BROKEN_STATE,
};
// Load file template
template<class T>
static Error Load(const std::string& _rFilename, int _Revision, const char *_VersionString, T& _class, std::string* _failureReason)
{
INFO_LOG(COMMON, "ChunkReader: Loading %s" , _rFilename.c_str());
_failureReason->clear();
_failureReason->append("LoadStateWrongVersion");
if (!FileUtil::Exists(_rFilename)) {
_failureReason->clear();
_failureReason->append("LoadStateDoesntExist");
ERROR_LOG(COMMON, "ChunkReader: File doesn't exist");
return ERROR_BAD_FILE;
}
// Check file size
const u64 fileSize = FileUtil::GetSize(_rFilename);
static const u64 headerSize = sizeof(SChunkHeader);
if (fileSize < headerSize)
{
ERROR_LOG(COMMON,"ChunkReader: File too small");
return ERROR_BAD_FILE;
}
FileUtil::IOFile pFile(_rFilename, "rb");
if (!pFile)
{
ERROR_LOG(COMMON,"ChunkReader: Can't open file for reading");
return ERROR_BAD_FILE;
}
// read the header
SChunkHeader header;
if (!pFile.ReadArray(&header, 1))
{
ERROR_LOG(COMMON,"ChunkReader: Bad header size");
return ERROR_BAD_FILE;
}
// Check revision
if (header.Revision != _Revision)
{
ERROR_LOG(COMMON,"ChunkReader: Wrong file revision, got %d expected %d",
header.Revision, _Revision);
return ERROR_BAD_FILE;
}
if (strcmp(header.GitVersion, _VersionString) != 0)
{
WARN_LOG(COMMON, "This savestate was generated by a different version of PPSSPP, %s. It may not load properly.",
header.GitVersion);
}
// get size
const int sz = (int)(fileSize - headerSize);
if (header.ExpectedSize != sz)
{
ERROR_LOG(COMMON,"ChunkReader: Bad file size, got %d expected %d",
sz, header.ExpectedSize);
return ERROR_BAD_FILE;
}
// read the state
u8* buffer = new u8[sz];
if (!pFile.ReadBytes(buffer, sz))
{
ERROR_LOG(COMMON,"ChunkReader: Error reading file");
return ERROR_BAD_FILE;
}
u8 *ptr = buffer;
u8 *buf = buffer;
if (header.Compress) {
u8 *uncomp_buffer = new u8[header.UncompressedSize];
size_t uncomp_size = header.UncompressedSize;
snappy_uncompress((const char *)buffer, sz, (char *)uncomp_buffer, &uncomp_size);
if ((int)uncomp_size != header.UncompressedSize) {
ERROR_LOG(COMMON,"Size mismatch: file: %i calc: %i", (int)header.UncompressedSize, (int)uncomp_size);
}
ptr = uncomp_buffer;
buf = uncomp_buffer;
delete [] buffer;
}
PointerWrap p(&ptr, PointerWrap::MODE_READ);
_class.DoState(p);
delete[] buf;
INFO_LOG(COMMON, "ChunkReader: Done loading %s" , _rFilename.c_str());
if (p.error != p.ERROR_FAILURE) {
return ERROR_NONE;
} else {
return ERROR_BROKEN_STATE;
}
}
// Save file template
template<class T>
static Error Save(const std::string& _rFilename, int _Revision, const char *_VersionString, T& _class)
{
INFO_LOG(COMMON, "ChunkReader: Writing %s" , _rFilename.c_str());
FileUtil::IOFile pFile(_rFilename, "wb");
if (!pFile)
{
ERROR_LOG(COMMON,"ChunkReader: Error opening file for write");
return ERROR_BAD_FILE;
}
bool compress = true;
// Get data
u8 *ptr = 0;
PointerWrap p(&ptr, PointerWrap::MODE_MEASURE);
_class.DoState(p);
size_t const sz = (size_t)ptr;
u8 * buffer = new u8[sz];
ptr = &buffer[0];
p.SetMode(PointerWrap::MODE_WRITE);
_class.DoState(p);
// Create header
SChunkHeader header;
header.Compress = compress ? 1 : 0;
header.Revision = _Revision;
header.ExpectedSize = (int)sz;
header.UncompressedSize = (int)sz;
strncpy(header.GitVersion, _VersionString, 32);
header.GitVersion[31] = '\0';
// Write to file
if (compress) {
size_t comp_len = snappy_max_compressed_length(sz);
u8 *compressed_buffer = new u8[comp_len];
snappy_compress((const char *)buffer, sz, (char *)compressed_buffer, &comp_len);
delete [] buffer;
header.ExpectedSize = (int)comp_len;
if (!pFile.WriteArray(&header, 1))
{
ERROR_LOG(COMMON,"ChunkReader: Failed writing header");
return ERROR_BAD_FILE;
}
if (!pFile.WriteBytes(&compressed_buffer[0], comp_len)) {
ERROR_LOG(COMMON,"ChunkReader: Failed writing compressed data");
return ERROR_BAD_FILE;
} else {
INFO_LOG(COMMON, "Savestate: Compressed %i bytes into %i", (int)sz, (int)comp_len);
}
delete [] compressed_buffer;
} else {
if (!pFile.WriteArray(&header, 1))
{
ERROR_LOG(COMMON,"ChunkReader: Failed writing header");
return ERROR_BAD_FILE;
}
if (!pFile.WriteBytes(&buffer[0], sz))
{
ERROR_LOG(COMMON,"ChunkReader: Failed writing data");
return ERROR_BAD_FILE;
}
delete [] buffer;
}
INFO_LOG(COMMON,"ChunkReader: Done writing %s",
_rFilename.c_str());
if (p.error != p.ERROR_FAILURE) {
return ERROR_NONE;
} else {
return ERROR_BROKEN_STATE;
}
}
template <class T>
static Error Verify(T& _class)
{
u8 *ptr = 0;
// Step 1: Measure the space required.
PointerWrap p(&ptr, PointerWrap::MODE_MEASURE);
_class.DoState(p);
size_t const sz = (size_t)ptr;
std::vector<u8> buffer(sz);
// Step 2: Dump the state.
ptr = &buffer[0];
p.SetMode(PointerWrap::MODE_WRITE);
_class.DoState(p);
// Step 3: Verify the state.
ptr = &buffer[0];
p.SetMode(PointerWrap::MODE_VERIFY);
_class.DoState(p);
return ERROR_NONE;
}
private:
struct SChunkHeader
{
int Revision;
int Compress;
int ExpectedSize;
int UncompressedSize;
char GitVersion[32];
};
}; */