csutil/archive.h
Go to the documentation of this file.00001 /* 00002 ZIP archive support for Crystal Space 3D library 00003 Copyright (C) 1998,1999 by Andrew Zabolotny <bit@eltech.ru> 00004 00005 This library is free software; you can redistribute it and/or 00006 modify it under the terms of the GNU Library General Public 00007 License as published by the Free Software Foundation; either 00008 version 2 of the License, or (at your option) any later version. 00009 00010 This library is distributed in the hope that it will be useful, 00011 but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00013 Library General Public License for more details. 00014 00015 You should have received a copy of the GNU Library General Public 00016 License along with this library; if not, write to the Free 00017 Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 00018 */ 00019 00020 #ifndef __CS_ARCHIVE_H__ 00021 #define __CS_ARCHIVE_H__ 00022 00027 #include "csextern.h" 00028 00029 #include "csutil/parray.h" 00030 #include "csutil/stringarray.h" 00031 #include "csutil/zip.h" 00032 00033 struct csFileTime; 00034 00054 class CS_CRYSTALSPACE_EXPORT csArchive 00055 { 00056 public: 00057 static char hdr_central[4]; 00058 static char hdr_local[4]; 00059 static char hdr_endcentral[4]; 00060 static char hdr_extlocal[4]; 00061 00062 private: 00064 class ArchiveEntry 00065 { 00066 public: 00067 char *filename; 00068 ZIP_central_directory_file_header info; 00069 char *buffer; 00070 size_t buffer_pos; 00071 size_t buffer_size; 00072 char *extrafield, *comment; 00073 bool faked; 00074 00075 ArchiveEntry (const char *name, ZIP_central_directory_file_header &cdfh); 00076 ~ArchiveEntry (); 00077 bool Append (const void *data, size_t size); 00078 bool WriteLFH (FILE *file); 00079 bool WriteCDFH (FILE *file); 00080 bool ReadExtraField (FILE *file, size_t extra_field_length); 00081 bool ReadFileComment (FILE *file, size_t file_comment_length); 00082 bool WriteFile (FILE *file); 00083 void FreeBuffer (); 00084 }; 00085 friend class ArchiveEntry; 00086 00088 class CS_CRYSTALSPACE_EXPORT ArchiveEntryVector 00089 : public csPDelArray<ArchiveEntry> 00090 { 00091 public: 00092 ArchiveEntryVector () : csPDelArray<ArchiveEntry> (256, 256) {} 00093 static int Compare (ArchiveEntry* const& Item1, ArchiveEntry* const& Item2) 00094 { return strcmp (Item1->filename, Item2->filename); } 00095 static int CompareKey (ArchiveEntry* const& Item, char const* const& Key) 00096 { return strcmp (Item->filename, Key); } 00097 }; 00098 00099 ArchiveEntryVector dir; // Archive directory: chain head (sorted) 00100 csStringArray del; // Files that should be deleted (sorted) 00101 csArray<ArchiveEntry*> lazy; // Lazy operations (unsorted) 00102 00103 char *filename; // Archive file name 00104 FILE *file; // Archive file pointer. 00105 00106 size_t comment_length; // Archive comment length 00107 char *comment; // Archive comment 00108 00109 void ReadDirectory (); 00110 bool IsDeleted (const char *name) const; 00111 void UnpackTime (ush zdate, ush ztime, csFileTime &rtime) const; 00112 void PackTime (const csFileTime &ztime, ush &rdate, ush &rtime) const; 00113 bool ReadArchiveComment (FILE *file, size_t zipfile_comment_length); 00114 void LoadECDR (ZIP_end_central_dir_record &ecdr, char *buff); 00115 bool ReadCDFH (ZIP_central_directory_file_header &cdfh, FILE *file); 00116 bool ReadLFH (ZIP_local_file_header &lfh, FILE *file); 00117 bool WriteECDR (ZIP_end_central_dir_record &ecdr, FILE *file); 00118 bool WriteZipArchive (); 00119 bool WriteCentralDirectory (FILE *temp); 00120 void UpdateDirectory (); 00121 void ReadZipDirectory (FILE *infile); 00122 ArchiveEntry *InsertEntry (const char *name, 00123 ZIP_central_directory_file_header &cdfh); 00124 void ReadZipEntries (FILE *infile); 00125 char *ReadEntry (FILE *infile, ArchiveEntry *f); 00126 ArchiveEntry *CreateArchiveEntry (const char *name, 00127 size_t size = 0, bool pack = true); 00128 void ResetArchiveEntry (ArchiveEntry *f, size_t size, bool pack); 00129 00130 public: 00132 csArchive (const char *filename); 00134 ~csArchive (); 00135 00137 void Dir () const; 00138 00153 void *NewFile (const char *name, size_t size = 0, bool pack = true); 00154 00159 bool DeleteFile (const char *name); 00160 00165 bool FileExists (const char *name, size_t *size = 0) const; 00166 00173 char *Read (const char *name, size_t *size = 0); 00174 00181 bool Write (void *entry, const char *data, size_t size); 00182 00192 bool Flush (); 00193 00195 void *GetFile (size_t no) 00196 { return (no < dir.Length ()) ? dir.Get (no) : 0; } 00197 00199 void *FindName (const char *name) const; 00201 char *GetFileName (void *entry) const 00202 { return ((ArchiveEntry*)entry)->filename; } 00204 size_t GetFileSize (void *entry) const 00205 { return ((ArchiveEntry*)entry)->info.ucsize; } 00207 void GetFileTime (void *entry, csFileTime &ztime) const; 00209 void SetFileTime (void *entry, const csFileTime &ztime); 00210 00212 char *GetName () const 00213 { return filename; } 00215 char *GetComment () const 00216 { return comment; } 00217 }; 00218 00219 inline void csArchive::GetFileTime (void *entry, csFileTime &ztime) const 00220 { 00221 if (entry) 00222 { 00223 UnpackTime (((ArchiveEntry*)entry)->info.last_mod_file_date, 00224 ((ArchiveEntry*)entry)->info.last_mod_file_time, 00225 ztime); 00226 } 00227 } 00228 00229 inline void csArchive::SetFileTime (void *entry, const csFileTime &ztime) 00230 { 00231 if (entry) 00232 { 00233 PackTime (ztime, 00234 ((ArchiveEntry*)entry)->info.last_mod_file_date, 00235 ((ArchiveEntry*)entry)->info.last_mod_file_time); 00236 } 00237 } 00238 00239 #endif // __CS_ARCHIVE_H__
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