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Merge pull request #118 from lioncash/chunk-file
chunk_file: General cleanup
This commit is contained in:
bunnei
commit
ee7cfc71bd
@ -32,35 +32,10 @@
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#include <string>
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#include <list>
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#include <set>
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#ifndef __SYMBIAN32__
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#if defined(IOS) || defined(MACGNUSTD)
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#include <tr1/type_traits>
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#else
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#include <type_traits>
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#endif
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#endif
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#include "common/common.h"
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#include "common/file_util.h"
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//#include "../ext/snappy/snappy-c.h"
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#if defined(IOS) || defined(MACGNUSTD)
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namespace std {
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using tr1::is_pointer;
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}
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#endif
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#ifdef __SYMBIAN32__
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namespace std {
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template <bool bool_value>
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struct bool_constant {
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typedef bool_constant<bool_value> type;
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static const bool value = bool_value;
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};
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template <bool bool_value> const bool bool_constant<bool_value>::value;
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template <typename T> struct is_pointer : public bool_constant<false> {};
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template <typename T> struct is_pointer<T*> : public bool_constant<true> {};
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}
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#endif
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template <class T>
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struct LinkedListItem : public T
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@ -651,222 +626,3 @@ inline PointerWrapSection::~PointerWrapSection() {
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p_.DoMarker(title_);
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}
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}
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// Commented out because it is currently unused, and breaks builds on OSX
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/*class CChunkFileReader
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{
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public:
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enum Error {
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ERROR_NONE,
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ERROR_BAD_FILE,
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ERROR_BROKEN_STATE,
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};
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// Load file template
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template<class T>
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static Error Load(const std::string& _rFilename, int _Revision, const char *_VersionString, T& _class, std::string* _failureReason)
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{
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INFO_LOG(COMMON, "ChunkReader: Loading %s" , _rFilename.c_str());
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_failureReason->clear();
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_failureReason->append("LoadStateWrongVersion");
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if (!FileUtil::Exists(_rFilename)) {
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_failureReason->clear();
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_failureReason->append("LoadStateDoesntExist");
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ERROR_LOG(COMMON, "ChunkReader: File doesn't exist");
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return ERROR_BAD_FILE;
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}
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// Check file size
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const u64 fileSize = FileUtil::GetSize(_rFilename);
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static const u64 headerSize = sizeof(SChunkHeader);
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if (fileSize < headerSize)
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{
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ERROR_LOG(COMMON,"ChunkReader: File too small");
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return ERROR_BAD_FILE;
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}
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FileUtil::IOFile pFile(_rFilename, "rb");
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if (!pFile)
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{
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ERROR_LOG(COMMON,"ChunkReader: Can't open file for reading");
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return ERROR_BAD_FILE;
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}
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// read the header
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SChunkHeader header;
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if (!pFile.ReadArray(&header, 1))
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{
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ERROR_LOG(COMMON,"ChunkReader: Bad header size");
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return ERROR_BAD_FILE;
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}
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// Check revision
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if (header.Revision != _Revision)
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{
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ERROR_LOG(COMMON,"ChunkReader: Wrong file revision, got %d expected %d",
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header.Revision, _Revision);
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return ERROR_BAD_FILE;
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}
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if (strcmp(header.GitVersion, _VersionString) != 0)
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{
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WARN_LOG(COMMON, "This savestate was generated by a different version of PPSSPP, %s. It may not load properly.",
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header.GitVersion);
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}
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// get size
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const int sz = (int)(fileSize - headerSize);
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if (header.ExpectedSize != sz)
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{
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ERROR_LOG(COMMON,"ChunkReader: Bad file size, got %d expected %d",
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sz, header.ExpectedSize);
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return ERROR_BAD_FILE;
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}
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// read the state
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u8* buffer = new u8[sz];
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if (!pFile.ReadBytes(buffer, sz))
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{
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ERROR_LOG(COMMON,"ChunkReader: Error reading file");
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return ERROR_BAD_FILE;
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}
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u8 *ptr = buffer;
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u8 *buf = buffer;
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if (header.Compress) {
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u8 *uncomp_buffer = new u8[header.UncompressedSize];
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size_t uncomp_size = header.UncompressedSize;
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snappy_uncompress((const char *)buffer, sz, (char *)uncomp_buffer, &uncomp_size);
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if ((int)uncomp_size != header.UncompressedSize) {
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ERROR_LOG(COMMON,"Size mismatch: file: %i calc: %i", (int)header.UncompressedSize, (int)uncomp_size);
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}
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ptr = uncomp_buffer;
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buf = uncomp_buffer;
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delete [] buffer;
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}
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PointerWrap p(&ptr, PointerWrap::MODE_READ);
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_class.DoState(p);
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delete[] buf;
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INFO_LOG(COMMON, "ChunkReader: Done loading %s" , _rFilename.c_str());
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if (p.error != p.ERROR_FAILURE) {
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return ERROR_NONE;
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} else {
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return ERROR_BROKEN_STATE;
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}
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}
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// Save file template
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template<class T>
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static Error Save(const std::string& _rFilename, int _Revision, const char *_VersionString, T& _class)
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{
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INFO_LOG(COMMON, "ChunkReader: Writing %s" , _rFilename.c_str());
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FileUtil::IOFile pFile(_rFilename, "wb");
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if (!pFile)
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{
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ERROR_LOG(COMMON,"ChunkReader: Error opening file for write");
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return ERROR_BAD_FILE;
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}
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bool compress = true;
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// Get data
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u8 *ptr = 0;
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PointerWrap p(&ptr, PointerWrap::MODE_MEASURE);
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_class.DoState(p);
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size_t const sz = (size_t)ptr;
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u8 * buffer = new u8[sz];
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ptr = &buffer[0];
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p.SetMode(PointerWrap::MODE_WRITE);
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_class.DoState(p);
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// Create header
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SChunkHeader header;
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header.Compress = compress ? 1 : 0;
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header.Revision = _Revision;
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header.ExpectedSize = (int)sz;
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header.UncompressedSize = (int)sz;
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strncpy(header.GitVersion, _VersionString, 32);
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header.GitVersion[31] = '\0';
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// Write to file
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if (compress) {
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size_t comp_len = snappy_max_compressed_length(sz);
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u8 *compressed_buffer = new u8[comp_len];
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snappy_compress((const char *)buffer, sz, (char *)compressed_buffer, &comp_len);
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delete [] buffer;
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header.ExpectedSize = (int)comp_len;
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if (!pFile.WriteArray(&header, 1))
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{
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ERROR_LOG(COMMON,"ChunkReader: Failed writing header");
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return ERROR_BAD_FILE;
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}
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if (!pFile.WriteBytes(&compressed_buffer[0], comp_len)) {
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ERROR_LOG(COMMON,"ChunkReader: Failed writing compressed data");
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return ERROR_BAD_FILE;
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} else {
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INFO_LOG(COMMON, "Savestate: Compressed %i bytes into %i", (int)sz, (int)comp_len);
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}
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delete [] compressed_buffer;
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} else {
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if (!pFile.WriteArray(&header, 1))
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{
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ERROR_LOG(COMMON,"ChunkReader: Failed writing header");
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return ERROR_BAD_FILE;
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}
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if (!pFile.WriteBytes(&buffer[0], sz))
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{
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ERROR_LOG(COMMON,"ChunkReader: Failed writing data");
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return ERROR_BAD_FILE;
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}
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delete [] buffer;
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}
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INFO_LOG(COMMON,"ChunkReader: Done writing %s",
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_rFilename.c_str());
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if (p.error != p.ERROR_FAILURE) {
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return ERROR_NONE;
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} else {
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return ERROR_BROKEN_STATE;
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}
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}
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template <class T>
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static Error Verify(T& _class)
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{
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u8 *ptr = 0;
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// Step 1: Measure the space required.
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PointerWrap p(&ptr, PointerWrap::MODE_MEASURE);
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_class.DoState(p);
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size_t const sz = (size_t)ptr;
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std::vector<u8> buffer(sz);
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// Step 2: Dump the state.
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ptr = &buffer[0];
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p.SetMode(PointerWrap::MODE_WRITE);
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_class.DoState(p);
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// Step 3: Verify the state.
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ptr = &buffer[0];
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p.SetMode(PointerWrap::MODE_VERIFY);
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_class.DoState(p);
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return ERROR_NONE;
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}
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private:
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struct SChunkHeader
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{
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int Revision;
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int Compress;
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int ExpectedSize;
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int UncompressedSize;
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char GitVersion[32];
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};
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}; */
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