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 __BORLANDC__
  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     if (right.GetChar(0) == wxT('/')) right = right.Mid(1);
  91
  92     wxString leftFilename = wxFileSystem::URLToNativePath(left);
  93
  94     s = new wxZipInputStream(leftFilename, right);
  95     if (s && s->IsOk() )
  96     {
  97         return new wxFSFile(s,
  98                             left + wxT("#zip:") + right,
  99                             GetMimeTypeFromExt(location),
 100                             GetAnchor(location),
 101                             wxDateTime(wxFileModificationTime(left)));
 102     }
 103
 104     delete s;
 105     return NULL;
 106 }
 107
 108
 109
 110 wxString wxZipFSHandler::FindFirst(const wxString& spec, int flags)
 111 {
 112     wxString right = GetRightLocation(spec);
 113     wxString left = GetLeftLocation(spec);
 114
 115     if (right.Last() == wxT('/')) right.RemoveLast();
 116
 117     if (m_Archive)
 118     {
 119         unzClose((unzFile)m_Archive);
 120         m_Archive = NULL;
 121     }
 122
 123     if (GetProtocol(left) != wxT("file"))
 124     {
 125         wxLogError(_("ZIP handler currently supports only local files!"));
 126         return wxEmptyString;
 127     }
 128
 129     switch (flags)
 130     {
 131         case wxFILE:
 132             m_AllowDirs = FALSE, m_AllowFiles = TRUE; break;
 133         case wxDIR:
 134             m_AllowDirs = TRUE, m_AllowFiles = FALSE; break;
 135         default:
 136             m_AllowDirs = m_AllowFiles = TRUE; break;
 137     }
 138
 139     m_ZipFile = left;
 140     m_Archive = (void*) unzOpen(m_ZipFile.mb_str());
 141     m_Pattern = right.AfterLast(wxT('/'));
 142     m_BaseDir = right.BeforeLast(wxT('/'));
 143
 144     if (m_Archive)
 145     {
 146         if (unzGoToFirstFile((unzFile)m_Archive) != UNZ_OK)
 147         {
 148             unzClose((unzFile)m_Archive);
 149             m_Archive = NULL;
 150         }
 151         else
 152         {
 153             if (m_AllowDirs)
 154             {
 155                 delete m_DirsFound;
 156                 m_DirsFound = new wxHashTableLong();
 157             }
 158             return DoFind();
 159         }
 160     }
 161     return wxEmptyString;
 162 }
 163
 164
 165
 166 wxString wxZipFSHandler::FindNext()
 167 {
 168     if (!m_Archive) return wxEmptyString;
 169     return DoFind();
 170 }
 171
 172
 173
 174 wxString wxZipFSHandler::DoFind()
 175 {
 176     static char namebuf[1024]; // char, not wxChar!
 177     char *c;
 178     wxString namestr, dir, filename;
 179     wxString match = wxEmptyString;
 180
 181     while (match == wxEmptyString)
 182     {
 183         unzGetCurrentFileInfo((unzFile)m_Archive, NULL, namebuf, 1024, NULL, 0, NULL, 0);
 184         for (c = namebuf; *c; c++) if (*c == '\\') *c = '/';
 185         namestr = wxString::FromAscii( namebuf );    // TODO what encoding does ZIP use?
 186
 187         if (m_AllowDirs)
 188         {
 189             dir = namestr.BeforeLast(wxT('/'));
 190             while (!dir.IsEmpty())
 191             {
 192                 long key = 0;
 193                 for (size_t i = 0; i < dir.Length(); i++) key += (wxUChar)dir[i];
 194                 if (m_DirsFound->Get(key) == wxNOT_FOUND)
 195                 {
 196                     m_DirsFound->Put(key, 1);
 197                     filename = dir.AfterLast(wxT('/'));
 198                     dir = dir.BeforeLast(wxT('/'));
 199                     if (!filename.IsEmpty() && m_BaseDir == dir &&
 200                                 wxMatchWild(m_Pattern, filename, FALSE))
 201                         match = m_ZipFile + wxT("#zip:") + dir + wxT("/") + filename;
 202                 }
 203                 else
 204                     break; // already tranversed
 205             }
 206         }
 207
 208         filename = namestr.AfterLast(wxT('/'));
 209         dir = namestr.BeforeLast(wxT('/'));
 210         if (m_AllowFiles && !filename.IsEmpty() && m_BaseDir == dir &&
 211                             wxMatchWild(m_Pattern, filename, FALSE))
 212             match = m_ZipFile + wxT("#zip:") + namestr;
 213
 214         if (unzGoToNextFile((unzFile)m_Archive) != UNZ_OK)
 215         {
 216             unzClose((unzFile)m_Archive);
 217             m_Archive = NULL;
 218             break;
 219         }
 220     }
 221
 222     return match;
 223 }
 224
 225
 226
 227 #endif
 228       //wxUSE_FILESYSTEM && wxUSE_FS_ZIP && wxUSE_ZIPSTREAM