csutil/archive.h
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 00023 #include <stdio.h> 00024 #include "csextern.h" 00025 #include "zip.h" 00026 #include "parray.h" 00027 #include "stringarray.h" 00028 00029 struct csFileTime; 00030 00051 class CS_CSUTIL_EXPORT csArchive 00052 { 00053 public: 00054 static char hdr_central[4]; 00055 static char hdr_local[4]; 00056 static char hdr_endcentral[4]; 00057 static char hdr_extlocal[4]; 00058 00059 private: 00061 class ArchiveEntry 00062 { 00063 public: 00064 char *filename; 00065 ZIP_central_directory_file_header info; 00066 char *buffer; 00067 size_t buffer_pos; 00068 size_t buffer_size; 00069 char *extrafield, *comment; 00070 bool faked; 00071 00072 ArchiveEntry (const char *name, ZIP_central_directory_file_header &cdfh); 00073 ~ArchiveEntry (); 00074 bool Append (const void *data, size_t size); 00075 bool WriteLFH (FILE *file); 00076 bool WriteCDFH (FILE *file); 00077 bool ReadExtraField (FILE *file, size_t extra_field_length); 00078 bool ReadFileComment (FILE *file, size_t file_comment_length); 00079 bool WriteFile (FILE *file); 00080 void FreeBuffer (); 00081 }; 00082 friend class ArchiveEntry; 00083 00085 class CS_CSUTIL_EXPORT ArchiveEntryVector : public csPDelArray<ArchiveEntry> 00086 { 00087 public: 00088 ArchiveEntryVector () : csPDelArray<ArchiveEntry> (256, 256) {} 00089 static int Compare (ArchiveEntry* const& Item1, ArchiveEntry* const& Item2) 00090 { return strcmp (Item1->filename, Item2->filename); } 00091 static int CompareKey (ArchiveEntry* const& Item, char const* const& Key) 00092 { return strcmp (Item->filename, Key); } 00093 }; 00094 00095 ArchiveEntryVector dir; // Archive directory: chain head (sorted) 00096 csStringArray del; // Files that should be deleted (sorted) 00097 csArray<ArchiveEntry*> lazy; // Lazy operations (unsorted) 00098 00099 char *filename; // Archive file name 00100 FILE *file; // Archive file pointer. 00101 00102 size_t comment_length; // Archive comment length 00103 char *comment; // Archive comment 00104 00105 void ReadDirectory (); 00106 bool IsDeleted (const char *name) const; 00107 void UnpackTime (ush zdate, ush ztime, csFileTime &rtime) const; 00108 void PackTime (const csFileTime &ztime, ush &rdate, ush &rtime) const; 00109 bool ReadArchiveComment (FILE *file, size_t zipfile_comment_length); 00110 void LoadECDR (ZIP_end_central_dir_record &ecdr, char *buff); 00111 bool ReadCDFH (ZIP_central_directory_file_header &cdfh, FILE *file); 00112 bool ReadLFH (ZIP_local_file_header &lfh, FILE *file); 00113 bool WriteECDR (ZIP_end_central_dir_record &ecdr, FILE *file); 00114 bool WriteZipArchive (); 00115 bool WriteCentralDirectory (FILE *temp); 00116 void UpdateDirectory (); 00117 void ReadZipDirectory (FILE *infile); 00118 ArchiveEntry *InsertEntry (const char *name, 00119 ZIP_central_directory_file_header &cdfh); 00120 void ReadZipEntries (FILE *infile); 00121 char *ReadEntry (FILE *infile, ArchiveEntry *f); 00122 ArchiveEntry *CreateArchiveEntry (const char *name, 00123 size_t size = 0, bool pack = true); 00124 void ResetArchiveEntry (ArchiveEntry *f, size_t size, bool pack); 00125 00126 public: 00128 csArchive (const char *filename); 00130 ~csArchive (); 00131 00133 void Dir () const; 00134 00149 void *NewFile (const char *name, size_t size = 0, bool pack = true); 00150 00155 bool DeleteFile (const char *name); 00156 00161 bool FileExists (const char *name, size_t *size = 0) const; 00162 00169 char *Read (const char *name, size_t *size = 0); 00170 00177 bool Write (void *entry, const char *data, size_t size); 00178 00188 bool Flush (); 00189 00191 void *GetFile (int no) 00192 { return (no >= 0) && (no < dir.Length ()) ? dir.Get (no) : 0; } 00193 00195 void *FindName (const char *name) const; 00197 char *GetFileName (void *entry) const 00198 { return ((ArchiveEntry*)entry)->filename; } 00200 size_t GetFileSize (void *entry) const 00201 { return ((ArchiveEntry*)entry)->info.ucsize; } 00203 void GetFileTime (void *entry, csFileTime &ztime) const; 00205 void SetFileTime (void *entry, const csFileTime &ztime); 00206 00208 char *GetName () const 00209 { return filename; } 00211 char *GetComment () const 00212 { return comment; } 00213 }; 00214 00215 inline void csArchive::GetFileTime (void *entry, csFileTime &ztime) const 00216 { 00217 if (entry) 00218 { 00219 UnpackTime (((ArchiveEntry*)entry)->info.last_mod_file_date, 00220 ((ArchiveEntry*)entry)->info.last_mod_file_time, 00221 ztime); 00222 } /* endif */ 00223 } 00224 00225 inline void csArchive::SetFileTime (void *entry, const csFileTime &ztime) 00226 { 00227 if (entry) 00228 { 00229 PackTime (ztime, 00230 ((ArchiveEntry*)entry)->info.last_mod_file_date, 00231 ((ArchiveEntry*)entry)->info.last_mod_file_time); 00232 } /* endif */ 00233 } 00234 00235 #endif // __CS_ARCHIVE_H__
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