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Diffstat (limited to 'libraries/irrlicht-1.8.1/source/Irrlicht/CPakReader.cpp')
-rw-r--r-- | libraries/irrlicht-1.8.1/source/Irrlicht/CPakReader.cpp | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/libraries/irrlicht-1.8.1/source/Irrlicht/CPakReader.cpp b/libraries/irrlicht-1.8.1/source/Irrlicht/CPakReader.cpp new file mode 100644 index 0000000..7b96842 --- /dev/null +++ b/libraries/irrlicht-1.8.1/source/Irrlicht/CPakReader.cpp | |||
@@ -0,0 +1,196 @@ | |||
1 | // Copyright (C) 2002-2012 Nikolaus Gebhardt | ||
2 | // This file is part of the "Irrlicht Engine". | ||
3 | // For conditions of distribution and use, see copyright notice in irrlicht.h | ||
4 | // Code contributed by skreamz | ||
5 | |||
6 | #include "CPakReader.h" | ||
7 | |||
8 | #ifdef __IRR_COMPILE_WITH_PAK_ARCHIVE_LOADER_ | ||
9 | |||
10 | #include "os.h" | ||
11 | #include "coreutil.h" | ||
12 | |||
13 | namespace irr | ||
14 | { | ||
15 | namespace io | ||
16 | { | ||
17 | |||
18 | namespace | ||
19 | { | ||
20 | |||
21 | inline bool isHeaderValid(const SPAKFileHeader& header) | ||
22 | { | ||
23 | const c8* tag = header.tag; | ||
24 | return tag[0] == 'P' && | ||
25 | tag[1] == 'A' && | ||
26 | tag[2] == 'C' && | ||
27 | tag[3] == 'K'; | ||
28 | } | ||
29 | |||
30 | } // end namespace | ||
31 | |||
32 | //! Constructor | ||
33 | CArchiveLoaderPAK::CArchiveLoaderPAK( io::IFileSystem* fs) | ||
34 | : FileSystem(fs) | ||
35 | { | ||
36 | #ifdef _DEBUG | ||
37 | setDebugName("CArchiveLoaderPAK"); | ||
38 | #endif | ||
39 | } | ||
40 | |||
41 | |||
42 | //! returns true if the file maybe is able to be loaded by this class | ||
43 | bool CArchiveLoaderPAK::isALoadableFileFormat(const io::path& filename) const | ||
44 | { | ||
45 | return core::hasFileExtension(filename, "pak"); | ||
46 | } | ||
47 | |||
48 | //! Check to see if the loader can create archives of this type. | ||
49 | bool CArchiveLoaderPAK::isALoadableFileFormat(E_FILE_ARCHIVE_TYPE fileType) const | ||
50 | { | ||
51 | return fileType == EFAT_PAK; | ||
52 | } | ||
53 | |||
54 | //! Creates an archive from the filename | ||
55 | /** \param file File handle to check. | ||
56 | \return Pointer to newly created archive, or 0 upon error. */ | ||
57 | IFileArchive* CArchiveLoaderPAK::createArchive(const io::path& filename, bool ignoreCase, bool ignorePaths) const | ||
58 | { | ||
59 | IFileArchive *archive = 0; | ||
60 | io::IReadFile* file = FileSystem->createAndOpenFile(filename); | ||
61 | |||
62 | if (file) | ||
63 | { | ||
64 | archive = createArchive(file, ignoreCase, ignorePaths); | ||
65 | file->drop (); | ||
66 | } | ||
67 | |||
68 | return archive; | ||
69 | } | ||
70 | |||
71 | //! creates/loads an archive from the file. | ||
72 | //! \return Pointer to the created archive. Returns 0 if loading failed. | ||
73 | IFileArchive* CArchiveLoaderPAK::createArchive(io::IReadFile* file, bool ignoreCase, bool ignorePaths) const | ||
74 | { | ||
75 | IFileArchive *archive = 0; | ||
76 | if ( file ) | ||
77 | { | ||
78 | file->seek ( 0 ); | ||
79 | archive = new CPakReader(file, ignoreCase, ignorePaths); | ||
80 | } | ||
81 | return archive; | ||
82 | } | ||
83 | |||
84 | |||
85 | //! Check if the file might be loaded by this class | ||
86 | /** Check might look into the file. | ||
87 | \param file File handle to check. | ||
88 | \return True if file seems to be loadable. */ | ||
89 | bool CArchiveLoaderPAK::isALoadableFileFormat(io::IReadFile* file) const | ||
90 | { | ||
91 | SPAKFileHeader header; | ||
92 | |||
93 | file->read(&header, sizeof(header)); | ||
94 | |||
95 | return isHeaderValid(header); | ||
96 | } | ||
97 | |||
98 | |||
99 | /*! | ||
100 | PAK Reader | ||
101 | */ | ||
102 | CPakReader::CPakReader(IReadFile* file, bool ignoreCase, bool ignorePaths) | ||
103 | : CFileList((file ? file->getFileName() : io::path("")), ignoreCase, ignorePaths), File(file) | ||
104 | { | ||
105 | #ifdef _DEBUG | ||
106 | setDebugName("CPakReader"); | ||
107 | #endif | ||
108 | |||
109 | if (File) | ||
110 | { | ||
111 | File->grab(); | ||
112 | scanLocalHeader(); | ||
113 | sort(); | ||
114 | } | ||
115 | } | ||
116 | |||
117 | |||
118 | CPakReader::~CPakReader() | ||
119 | { | ||
120 | if (File) | ||
121 | File->drop(); | ||
122 | } | ||
123 | |||
124 | |||
125 | const IFileList* CPakReader::getFileList() const | ||
126 | { | ||
127 | return this; | ||
128 | } | ||
129 | |||
130 | bool CPakReader::scanLocalHeader() | ||
131 | { | ||
132 | SPAKFileHeader header; | ||
133 | |||
134 | // Read and validate the header | ||
135 | File->read(&header, sizeof(header)); | ||
136 | if (!isHeaderValid(header)) | ||
137 | return false; | ||
138 | |||
139 | // Seek to the table of contents | ||
140 | #ifdef __BIG_ENDIAN__ | ||
141 | header.offset = os::Byteswap::byteswap(header.offset); | ||
142 | header.length = os::Byteswap::byteswap(header.length); | ||
143 | #endif | ||
144 | File->seek(header.offset); | ||
145 | |||
146 | const int numberOfFiles = header.length / sizeof(SPAKFileEntry); | ||
147 | |||
148 | // Loop through each entry in the table of contents | ||
149 | for(int i = 0; i < numberOfFiles; i++) | ||
150 | { | ||
151 | // read an entry | ||
152 | SPAKFileEntry entry; | ||
153 | File->read(&entry, sizeof(entry)); | ||
154 | |||
155 | #ifdef _DEBUG | ||
156 | os::Printer::log(entry.name); | ||
157 | #endif | ||
158 | |||
159 | #ifdef __BIG_ENDIAN__ | ||
160 | entry.offset = os::Byteswap::byteswap(entry.offset); | ||
161 | entry.length = os::Byteswap::byteswap(entry.length); | ||
162 | #endif | ||
163 | |||
164 | addItem(io::path(entry.name), entry.offset, entry.length, false ); | ||
165 | } | ||
166 | return true; | ||
167 | } | ||
168 | |||
169 | |||
170 | //! opens a file by file name | ||
171 | IReadFile* CPakReader::createAndOpenFile(const io::path& filename) | ||
172 | { | ||
173 | s32 index = findFile(filename, false); | ||
174 | |||
175 | if (index != -1) | ||
176 | return createAndOpenFile(index); | ||
177 | |||
178 | return 0; | ||
179 | } | ||
180 | |||
181 | |||
182 | //! opens a file by index | ||
183 | IReadFile* CPakReader::createAndOpenFile(u32 index) | ||
184 | { | ||
185 | if (index >= Files.size() ) | ||
186 | return 0; | ||
187 | |||
188 | const SFileListEntry &entry = Files[index]; | ||
189 | return createLimitReadFile( entry.FullName, File, entry.Offset, entry.Size ); | ||
190 | } | ||
191 | |||
192 | } // end namespace io | ||
193 | } // end namespace irr | ||
194 | |||
195 | #endif // __IRR_COMPILE_WITH_PAK_ARCHIVE_LOADER_ | ||
196 | |||