1 /*---------------------------------------------------------------------------*
2 Project: NintendoWare
3 File: io_RomFileStream.cpp
4
5 Copyright (C)2009-2011 Nintendo/HAL Laboratory, Inc. All rights reserved.
6
7 These coded instructions, statements, and computer programs contain proprietary
8 information of Nintendo and/or its licensed developers and are protected by
9 national and international copyright laws. They may not be disclosed to third
10 parties or copied or duplicated in any form, in whole or in part, without the
11 prior written consent of Nintendo.
12
13 The content herein is highly confidential and should be handled accordingly.
14
15 $Revision: $
16 *---------------------------------------------------------------------------*/
17
18 #include "precompiled.h"
19
20 #include <nw/io/io_RomFileStream.h>
21
22 namespace nw {
23 namespace io {
24
25 NW_UT_RUNTIME_TYPEINFO_DEFINITION(RomFileStream,IOStream);
26
RomFileStream()27 RomFileStream::RomFileStream()
28 {
29 Initialize();
30 }
31
32 // RomFileStream::RomFileStream( const wchar_t* path )
RomFileStream(const char * path)33 RomFileStream::RomFileStream( const char* path )
34 {
35 Initialize();
36 Open( path );
37 }
38 #ifdef NW_PLATFORM_CTRWIN
RomFileStream(const nn::fs::File * openedFile,bool closeEnable)39 RomFileStream::RomFileStream( const nn::fs::File* openedFile, bool closeEnable )
40 {
41 Initialize();
42 Open( openedFile, closeEnable );
43 }
44 #else
RomFileStream(nn::fs::FileReader * openedFileReader,bool closeEnable)45 RomFileStream::RomFileStream( nn::fs::FileReader* openedFileReader, bool closeEnable )
46 {
47 Initialize();
48 Open( openedFileReader, closeEnable );
49 }
50 #endif
51
~RomFileStream()52 RomFileStream::~RomFileStream()
53 {
54 if ( m_CloseOnDestroyFlag )
55 {
56 Close();
57 }
58 }
59
60 #ifdef NW_PLATFORM_CTRWIN
61
Open(const nn::fs::File * openedFile,bool closeEnable)62 bool RomFileStream::Open( const nn::fs::File* openedFile, bool closeEnable )
63 {
64 // 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
65 if ( m_CloseOnDestroyFlag )
66 {
67 Close();
68 }
69
70 m_File = *openedFile;
71 m_FilePosition.SetFileSize( nn::fs::GetLength( &m_File ) );
72 m_FilePosition.Seek( 0, FILE_STREAM_SEEK_BEGIN );
73
74 // オープン済みのファイルハンドラを渡されているので、
75 // クローズするかどうかはユーザの指定に任せる。
76 m_CloseOnDestroyFlag = false;
77 m_CloseEnableFlag = closeEnable;
78 m_IsAvailable = true;
79 return true;
80 }
Open(const char * path)81 bool RomFileStream::Open( const char* path )
82 {
83 NW_NULL_ASSERT( path );
84
85 if ( nn::fs::OpenFile( &m_File, path ) )
86 {
87 m_FilePosition.SetFileSize( nn::fs::GetLength( &m_File ) );
88 m_FilePosition.Seek( 0, FILE_STREAM_SEEK_BEGIN );
89 m_CloseOnDestroyFlag = true;
90 m_CloseEnableFlag = true;
91 m_IsAvailable = true;
92 return true;
93 }
94 return false;
95 }
96
97 #else
98
Open(nn::fs::FileReader * openedFileReader,bool closeEnable)99 bool RomFileStream::Open( nn::fs::FileReader* openedFileReader, bool closeEnable )
100 {
101 // 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
102 if ( m_CloseOnDestroyFlag )
103 {
104 Close();
105 }
106
107 m_pOpenedFileReader = openedFileReader;
108 m_FilePosition.SetFileSize( m_pOpenedFileReader->GetSize() );
109 m_FilePosition.Seek( 0, FILE_STREAM_SEEK_BEGIN );
110
111 // オープン済みのファイルハンドラを渡されているので、
112 // クローズするかどうかはユーザの指定に任せる。
113 m_CloseOnDestroyFlag = false;
114 m_CloseEnableFlag = closeEnable;
115 m_IsAvailable = true;
116 return true;
117 }
118 // bool RomFileStream::Open( const wchar_t* path )
Open(const char * path)119 bool RomFileStream::Open( const char* path )
120 {
121 NW_NULL_ASSERT( path );
122
123 m_FileReader.Initialize( path );
124 m_pOpenedFileReader = &m_FileReader;
125 m_FilePosition.SetFileSize( m_pOpenedFileReader->GetSize() );
126 m_FilePosition.Seek( 0, FILE_STREAM_SEEK_BEGIN );
127 m_CloseOnDestroyFlag = true;
128 m_CloseEnableFlag = true;
129 m_IsAvailable = true;
130 return true;
131 }
132
133 #endif /* NW_PLATFORM_CTRWIN */
134
135
Initialize()136 void RomFileStream::Initialize()
137 {
138 m_IsAvailable = false;
139 m_CloseOnDestroyFlag = false;
140 }
141
Close()142 void RomFileStream::Close()
143 {
144 if ( m_CloseEnableFlag && m_IsAvailable )
145 {
146 #ifdef NW_PLATFORM_CTRWIN
147 nn::fs::CloseFile( &m_File );
148 #else
149 m_pOpenedFileReader->Finalize();
150 #endif
151 m_IsAvailable = false;
152 }
153 }
154
Read(void * buf,u32 length)155 s32 RomFileStream::Read( void* buf, u32 length )
156 {
157 // NW_ALIGN32_ASSERT( buf );
158 // 必要？ NW_ALLIGN32_ASSERT( length );
159 // 必要？ NW_ALIGN4_ASSERT( m_FilePosition.Tell() );
160 NW_ASSERTMSG( m_IsAvailable, "RomFileStream is not opened" );
161
162 #ifdef NW_PLATFORM_CTRWIN
163 if ( nn::fs::SeekFile( &m_File, m_FilePosition.Tell(), nn::fs::FS_SEEK_SET ) )
164 {
165 s32 readBytes = nn::fs::ReadFile( &m_File, buf, length );
166 if ( readBytes > 0 )
167 {
168 m_FilePosition.Skip( readBytes );
169 }
170 return readBytes;
171 }
172 return -1;
173 #else
174 m_pOpenedFileReader->Seek( m_FilePosition.Tell(), nn::fs::POSITION_BASE_BEGIN );
175 s32 readBytes = m_pOpenedFileReader->Read( buf, length );
176 if ( readBytes > 0 )
177 {
178 m_FilePosition.Skip( readBytes );
179 }
180 return readBytes;
181 #endif
182 }
183
Seek(s32 offset,u32 origin)184 void RomFileStream::Seek( s32 offset, u32 origin )
185 {
186 NW_ALIGN4_ASSERT( offset );
187 NW_ASSERTMSG( m_IsAvailable, "RomFileStream is not opened" );
188 m_FilePosition.Seek( offset, origin );
189 }
190
191 } // namespace nw::io
192 } // namespace nw
193
194