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