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Merge pull request #68 from archshift/readfile

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Added FS functions to Archive and Archive_RomFS
This commit is contained in:
bunnei 2014-08-22 18:50:00 -04:00
commit 0ffc966e42
4 changed files with 88 additions and 11 deletions
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19
src/core/file_sys/archive.h
View file

@ -37,18 +37,33 @@ public:
/**
* Read data from the archive
* @param offset Offset in bytes to start reading archive from
* @param length Length in bytes to read data from archive
* @param offset Offset in bytes to start reading data from
* @param length Length in bytes of data to read from archive
* @param buffer Buffer to read data into
* @return Number of bytes read
*/
virtual size_t Read(const u64 offset, const u32 length, u8* buffer) const = 0;
/**
* Write data to the archive
* @param offset Offset in bytes to start writing data to
* @param length Length in bytes of data to write to archive
* @param buffer Buffer to write data from
* @param flush The flush parameters (0 == do not flush)
* @return Number of bytes written
*/
virtual size_t Write(const u64 offset, const u32 length, const u32 flush, u8* buffer) = 0;
/**
* Get the size of the archive in bytes
* @return Size of the archive in bytes
*/
virtual size_t GetSize() const = 0;
/**
* Set the size of the archive in bytes
*/
virtual void SetSize(const u64 size) = 0;
};
} // namespace FileSys

27
src/core/file_sys/archive_romfs.cpp
View file

@ -23,8 +23,8 @@ Archive_RomFS::~Archive_RomFS() {
/**
* Read data from the archive
* @param offset Offset in bytes to start reading archive from
* @param length Length in bytes to read data from archive
* @param offset Offset in bytes to start reading data from
* @param length Length in bytes of data to read from archive
* @param buffer Buffer to read data into
* @return Number of bytes read
*/
@ -34,13 +34,32 @@ size_t Archive_RomFS::Read(const u64 offset, const u32 length, u8* buffer) const
return length;
}
/**
* Write data to the archive
* @param offset Offset in bytes to start writing data to
* @param length Length in bytes of data to write to archive
* @param buffer Buffer to write data from
* @param flush The flush parameters (0 == do not flush)
* @return Number of bytes written
*/
size_t Archive_RomFS::Write(const u64 offset, const u32 length, const u32 flush, u8* buffer) {
ERROR_LOG(FILESYS, "Attempted to write to ROMFS.");
return 0;
}
/**
* Get the size of the archive in bytes
* @return Size of the archive in bytes
*/
size_t Archive_RomFS::GetSize() const {
ERROR_LOG(FILESYS, "(UNIMPLEMENTED)");
return 0;
return sizeof(u8) * raw_data.size();
}
/**
* Set the size of the archive in bytes
*/
void Archive_RomFS::SetSize(const u64 size) {
ERROR_LOG(FILESYS, "Attempted to set the size of ROMFS");
}
} // namespace FileSys

19
src/core/file_sys/archive_romfs.h
View file

@ -30,18 +30,33 @@ public:
/**
* Read data from the archive
* @param offset Offset in bytes to start reading archive from
* @param length Length in bytes to read data from archive
* @param offset Offset in bytes to start reading data from
* @param length Length in bytes of data to read from archive
* @param buffer Buffer to read data into
* @return Number of bytes read
*/
size_t Read(const u64 offset, const u32 length, u8* buffer) const override;
/**
* Write data to the archive
* @param offset Offset in bytes to start writing data to
* @param length Length in bytes of data to write to archive
* @param buffer Buffer to write data from
* @param flush The flush parameters (0 == do not flush)
* @return Number of bytes written
*/
size_t Write(const u64 offset, const u32 length, const u32 flush, u8* buffer) override;
/**
* Get the size of the archive in bytes
* @return Size of the archive in bytes
*/
size_t GetSize() const override;
/**
* Set the size of the archive in bytes
*/
void SetSize(const u64 size) override;
private:
std::vector<u8> raw_data;

34
src/core/hle/kernel/archive.cpp
View file

@ -3,6 +3,7 @@
// Refer to the license.txt file included.
#include "common/common_types.h"
#include "common/math_util.h"
#include "core/file_sys/archive.h"
#include "core/hle/service/service.h"
@ -48,23 +49,50 @@ public:
Result SyncRequest(bool* wait) {
u32* cmd_buff = Service::GetCommandBuffer();
FileCommand cmd = static_cast<FileCommand>(cmd_buff[0]);
switch (cmd) {
// Read from archive...
case FileCommand::Read:
{
u64 offset = cmd_buff[1] | ((u64) cmd_buff[2]) << 32;
u64 offset = cmd_buff[1] | ((u64)cmd_buff[2] << 32);
u32 length = cmd_buff[3];
u32 address = cmd_buff[5];
// Number of bytes read
cmd_buff[2] = backend->Read(offset, length, Memory::GetPointer(address));
break;
}
// Write to archive...
case FileCommand::Write:
{
u64 offset = cmd_buff[1] | ((u64)cmd_buff[2] << 32);
u32 length = cmd_buff[3];
u32 flush = cmd_buff[4];
u32 address = cmd_buff[6];
// Number of bytes written
cmd_buff[2] = backend->Write(offset, length, flush, Memory::GetPointer(address));
break;
}
case FileCommand::GetSize:
{
u64 filesize = (u64) backend->GetSize();
cmd_buff[2] = (u32) filesize; // Lower word
cmd_buff[3] = (u32) (filesize >> 32); // Upper word
break;
}
case FileCommand::SetSize:
{
backend->SetSize(cmd_buff[1] | ((u64)cmd_buff[2] << 32));
break;
}
// Unknown command...
default:
{
ERROR_LOG(KERNEL, "Unknown command=0x%08X!", cmd);
return -1;
}
}
cmd_buff[1] = 0; // No error
return 0;
}
@ -140,7 +168,7 @@ Archive* CreateArchive(Handle& handle, FileSys::Archive* backend, const std::str
*/
Handle CreateArchive(FileSys::Archive* backend, const std::string& name) {
Handle handle;
Archive* archive = CreateArchive(handle, backend, name);
CreateArchive(handle, backend, name);
return handle;
}