1 /*---------------------------------------------------------------------------*
2 Project: NintendoWare
3 File: io_RomFileStream.cpp
4
5 Copyright (C)2009-2010 Nintendo Co., Ltd./HAL Laboratory, Inc. All rights reserved.
6
7 These coded instructions, statements, and computer programs contain
8 proprietary information of Nintendo of America Inc. and/or Nintendo
9 Company Ltd., and are protected by Federal copyright law. They may
10 not be disclosed to third parties or copied or duplicated in any form,
11 in whole or in part, without the prior written consent of Nintendo.
12
13 $Revision:$
14 *---------------------------------------------------------------------------*/
15
16 #include "precompiled.h"
17
18 #include <nw/io/io_RomFileStream.h>
19
20 namespace nw {
21 namespace io {
22
23 NW_UT_RUNTIME_TYPEINFO_DEFINITION(RomFileStream,IOStream);
24
RomFileStream()25 RomFileStream::RomFileStream()
26 {
27 Initialize();
28 }
29
30 // RomFileStream::RomFileStream( const wchar_t* path )
RomFileStream(const char * path)31 RomFileStream::RomFileStream( const char* path )
32 {
33 Initialize();
34 Open( path );
35 }
36 #ifdef NW_PLATFORM_CTRWIN
RomFileStream(const nn::fs::File * openedFile,bool closeEnable)37 RomFileStream::RomFileStream( const nn::fs::File* openedFile, bool closeEnable )
38 {
39 Initialize();
40 Open( openedFile, closeEnable );
41 }
42 #else
RomFileStream(nn::fs::FileReader * openedFileReader,bool closeEnable)43 RomFileStream::RomFileStream( nn::fs::FileReader* openedFileReader, bool closeEnable )
44 {
45 Initialize();
46 Open( openedFileReader, closeEnable );
47 }
48 #endif
49
~RomFileStream()50 RomFileStream::~RomFileStream()
51 {
52 if ( m_CloseOnDestroyFlag )
53 {
54 Close();
55 }
56 }
57
58 #ifdef NW_PLATFORM_CTRWIN
59
Open(const nn::fs::File * openedFile,bool closeEnable)60 bool RomFileStream::Open( const nn::fs::File* openedFile, bool closeEnable )
61 {
62 // 開かれているファイルがありファイルクローズが可能な場合にファイルを閉じます
63 if ( m_CloseOnDestroyFlag )
64 {
65 Close();
66 }
67
68 m_File = *openedFile;
69 m_FilePosition.SetFileSize( nn::fs::GetLength( &m_File ) );
70 m_FilePosition.Seek( 0, FILE_STREAM_SEEK_BEGIN );
71
72 // オープン済みのファイルハンドラを渡されているので、
73 // クローズするかどうかはユーザの指定に任せる。
74 m_CloseOnDestroyFlag = false;
75 m_CloseEnableFlag = closeEnable;
76 m_IsAvailable = true;
77 return true;
78 }
Open(const char * path)79 bool RomFileStream::Open( const char* path )
80 {
81 NW_NULL_ASSERT( path );
82
83 if ( nn::fs::OpenFile( &m_File, path ) )
84 {
85 m_FilePosition.SetFileSize( nn::fs::GetLength( &m_File ) );
86 m_FilePosition.Seek( 0, FILE_STREAM_SEEK_BEGIN );
87 m_CloseOnDestroyFlag = true;
88 m_CloseEnableFlag = true;
89 m_IsAvailable = true;
90 return true;
91 }
92 return false;
93 }
94
95 #else
96
Open(nn::fs::FileReader * openedFileReader,bool closeEnable)97 bool RomFileStream::Open( nn::fs::FileReader* openedFileReader, bool closeEnable )
98 {
99 // 開かれているファイルがありファイルクローズが可能な場合にファイルを閉じます
100 if ( m_CloseOnDestroyFlag )
101 {
102 Close();
103 }
104
105 m_pOpenedFileReader = openedFileReader;
106 m_FilePosition.SetFileSize( m_pOpenedFileReader->GetSize() );
107 m_FilePosition.Seek( 0, FILE_STREAM_SEEK_BEGIN );
108
109 // オープン済みのファイルハンドラを渡されているので、
110 // クローズするかどうかはユーザの指定に任せる。
111 m_CloseOnDestroyFlag = false;
112 m_CloseEnableFlag = closeEnable;
113 m_IsAvailable = true;
114 return true;
115 }
116 // bool RomFileStream::Open( const wchar_t* path )
Open(const char * path)117 bool RomFileStream::Open( const char* path )
118 {
119 NW_NULL_ASSERT( path );
120
121 m_FileReader.Initialize( path );
122 m_pOpenedFileReader = &m_FileReader;
123 m_FilePosition.SetFileSize( m_pOpenedFileReader->GetSize() );
124 m_FilePosition.Seek( 0, FILE_STREAM_SEEK_BEGIN );
125 m_CloseOnDestroyFlag = true;
126 m_CloseEnableFlag = true;
127 m_IsAvailable = true;
128 return true;
129 }
130
131 #endif /* NW_PLATFORM_CTRWIN */
132
133
Initialize()134 void RomFileStream::Initialize()
135 {
136 m_IsAvailable = false;
137 m_CloseOnDestroyFlag = false;
138 }
139
Close()140 void RomFileStream::Close()
141 {
142 if ( m_CloseEnableFlag && m_IsAvailable )
143 {
144 #ifdef NW_PLATFORM_CTRWIN
145 nn::fs::CloseFile( &m_File );
146 #else
147 m_pOpenedFileReader->Finalize();
148 #endif
149 m_IsAvailable = false;
150 }
151 }
152
Read(void * buf,u32 length)153 s32 RomFileStream::Read( void* buf, u32 length )
154 {
155 // NW_ALIGN32_ASSERT( buf );
156 // 必要？ NW_ALLIGN32_ASSERT( length );
157 // 必要？ NW_ALIGN4_ASSERT( m_FilePosition.Tell() );
158 NW_ASSERTMSG( m_IsAvailable, "RomFileStream is not opened" );
159
160 #ifdef NW_PLATFORM_CTRWIN
161 if ( nn::fs::SeekFile( &m_File, m_FilePosition.Tell(), nn::fs::FS_SEEK_SET ) )
162 {
163 s32 readBytes = nn::fs::ReadFile( &m_File, buf, length );
164 if ( readBytes > 0 )
165 {
166 m_FilePosition.Skip( readBytes );
167 }
168 return readBytes;
169 }
170 return -1;
171 #else
172 m_pOpenedFileReader->Seek( m_FilePosition.Tell(), nn::fs::POSITION_BASE_BEGIN );
173 s32 readBytes = m_pOpenedFileReader->Read( buf, length );
174 if ( readBytes > 0 )
175 {
176 m_FilePosition.Skip( readBytes );
177 }
178 return readBytes;
179 #endif
180 }
181
Seek(s32 offset,u32 origin)182 void RomFileStream::Seek( s32 offset, u32 origin )
183 {
184 NW_ALIGN4_ASSERT( offset );
185 NW_ASSERTMSG( m_IsAvailable, "RomFileStream is not opened" );
186 m_FilePosition.Seek( offset, origin );
187 }
188
189 } // namespace nw::io
190 } // namespace nw
191
192