src/common/fs_zip.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        fs_zip.cpp
   3 // Purpose:     ZIP file system
   4 // Author:      Vaclav Slavik
   5 // Copyright:   (c) 1999 Vaclav Slavik
   6 // CVS-ID:      $Id$
   7 // Licence:     wxWindows Licence
   8 /////////////////////////////////////////////////////////////////////////////
   9
  10
  11
  12 #ifdef __GNUG__
  13 #pragma implementation
  14 #endif
  15
  16 #include "wx/wxprec.h"
  17
  18 #ifdef __BORDLANDC__
  19 #pragma hdrstop
  20 #endif
  21
  22 #if wxUSE_FILESYSTEM && wxUSE_FS_ZIP && wxUSE_ZIPSTREAM
  23
  24 #ifndef WXPRECOMP
  25 #include "wx/wx.h"
  26 #endif
  27
  28 #include "wx/hash.h"
  29 #include "wx/filesys.h"
  30 #include "wx/zipstrm.h"
  31 #include "wx/fs_zip.h"
  32
  33 /* Not the right solution (paths in makefiles) but... */
  34 #ifdef __BORLANDC__
  35 #include "../common/unzip.h"
  36 #else
  37 #include "unzip.h"
  38 #endif
  39
  40
  41 //--------------------------------------------------------------------------------
  42 // wxZipFSHandler
  43 //--------------------------------------------------------------------------------
  44
  45
  46
  47 wxZipFSHandler::wxZipFSHandler() : wxFileSystemHandler()
  48 {
  49     m_Archive = NULL;
  50     m_ZipFile = m_Pattern = m_BaseDir = wxEmptyString;
  51     m_AllowDirs = m_AllowFiles = TRUE;
  52     m_DirsFound = NULL;
  53 }
  54
  55
  56
  57 wxZipFSHandler::~wxZipFSHandler()
  58 {
  59     if (m_Archive)
  60         unzClose((unzFile)m_Archive);
  61     if (m_DirsFound)
  62         delete m_DirsFound;
  63 }
  64
  65
  66
  67 bool wxZipFSHandler::CanOpen(const wxString& location)
  68 {
  69     wxString p = GetProtocol(location);
  70     return (p == wxT("zip"));
  71 }
  72
  73
  74
  75
  76 wxFSFile* wxZipFSHandler::OpenFile(wxFileSystem& WXUNUSED(fs), const wxString& location)
  77 {
  78     wxString right = GetRightLocation(location);
  79     wxString left = GetLeftLocation(location);
  80     wxInputStream *s;
  81
  82     if (GetProtocol(left) != wxT("file"))
  83     {
  84         wxLogError(_("ZIP handler currently supports only local files!"));
  85         return NULL;
  86     }
  87
  88     s = new wxZipInputStream(left, right);
  89     if (s && (s->LastError() == wxStream_NOERROR))
  90     {
  91         return new wxFSFile(s,
  92                             left + wxT("#zip:") + right,
  93                             GetMimeTypeFromExt(location),
  94                             GetAnchor(location),
  95                             wxDateTime(wxFileModificationTime(left)));
  96     }
  97
  98     delete s;
  99     return NULL;
 100 }
 101
 102
 103
 104 wxString wxZipFSHandler::FindFirst(const wxString& spec, int flags)
 105 {
 106     wxString right = GetRightLocation(spec);
 107     wxString left = GetLeftLocation(spec);
 108
 109     if (right.Last() == wxT('/')) right.RemoveLast();
 110
 111     if (m_Archive)
 112     {
 113         unzClose((unzFile)m_Archive);
 114         m_Archive = NULL;
 115     }
 116
 117     if (GetProtocol(left) != wxT("file"))
 118     {
 119         wxLogError(_("ZIP handler currently supports only local files!"));
 120         return wxEmptyString;
 121     }
 122
 123     switch (flags)
 124     {
 125         case wxFILE:
 126             m_AllowDirs = FALSE, m_AllowFiles = TRUE; break;
 127         case wxDIR:
 128             m_AllowDirs = TRUE, m_AllowFiles = FALSE; break;
 129         default:
 130             m_AllowDirs = m_AllowFiles = TRUE; break;
 131     }
 132
 133     m_ZipFile = left;
 134     m_Archive = (void*) unzOpen(m_ZipFile.mb_str());
 135     m_Pattern = right.AfterLast(wxT('/'));
 136     m_BaseDir = right.BeforeLast(wxT('/'));
 137
 138     if (m_Archive)
 139     {
 140         if (unzGoToFirstFile((unzFile)m_Archive) != UNZ_OK)
 141         {
 142             unzClose((unzFile)m_Archive);
 143             m_Archive = NULL;
 144         }
 145         else
 146         {
 147             if (m_AllowDirs)
 148             {
 149                 delete m_DirsFound;
 150                 m_DirsFound = new wxHashTableLong();
 151             }
 152             return DoFind();
 153         }
 154     }
 155     return wxEmptyString;
 156 }
 157
 158
 159
 160 wxString wxZipFSHandler::FindNext()
 161 {
 162     if (!m_Archive) return wxEmptyString;
 163     return DoFind();
 164 }
 165
 166
 167
 168 wxString wxZipFSHandler::DoFind()
 169 {
 170     static char namebuf[1024]; // char, not wxChar!
 171     char *c;
 172     wxString namestr, dir, filename;
 173     wxString match = wxEmptyString;
 174
 175     while (match == wxEmptyString)
 176     {
 177         unzGetCurrentFileInfo((unzFile)m_Archive, NULL, namebuf, 1024, NULL, 0, NULL, 0);
 178         for (c = namebuf; *c; c++) if (*c == wxT('\\')) *c = wxT('/');
 179         namestr = namebuf;
 180
 181         if (m_AllowDirs)
 182         {
 183             dir = namestr.BeforeLast(wxT('/'));
 184             while (!dir.IsEmpty())
 185             {
 186                 long key = 0;
 187                 for (size_t i = 0; i < dir.Length(); i++) key += (wxUChar)dir[i];
 188                 if (m_DirsFound->Get(key) == wxNOT_FOUND)
 189                 {
 190                     m_DirsFound->Put(key, 1);
 191                     filename = dir.AfterLast(wxT('/'));
 192                     dir = dir.BeforeLast(wxT('/'));
 193                     if (!filename.IsEmpty() && m_BaseDir == dir &&
 194                                 wxMatchWild(m_Pattern, filename, FALSE))
 195                         match = m_ZipFile + wxT("#zip:") + dir + wxT("/") + filename;
 196                 }
 197                 else
 198                     break; // already tranversed
 199             }
 200         }
 201
 202         filename = namestr.AfterLast(wxT('/'));
 203         dir = namestr.BeforeLast(wxT('/'));
 204         if (m_AllowFiles && !filename.IsEmpty() && m_BaseDir == dir &&
 205                             wxMatchWild(m_Pattern, filename, FALSE))
 206             match = m_ZipFile + wxT("#zip:") + namestr;
 207
 208         if (unzGoToNextFile((unzFile)m_Archive) != UNZ_OK)
 209         {
 210             unzClose((unzFile)m_Archive);
 211             m_Archive = NULL;
 212             break;
 213         }
 214     }
 215
 216     return match;
 217 }
 218
 219
 220
 221 #endif
 222       //wxUSE_FILESYSTEM && wxUSE_FS_ZIP && wxUSE_ZIPSTREAM