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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  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 && wxUSE_ZLIB
  23
  24 #ifndef WXPRECOMP
  25     #include "wx/intl.h"
  26     #include "wx/log.h"
  27 #endif
  28
  29 #include "wx/filesys.h"
  30 #include "wx/wfstream.h"
  31 #include "wx/zipstrm.h"
  32 #include "wx/fs_zip.h"
  33
  34
  35 //---------------------------------------------------------------------------
  36 // wxZipFSInputStream
  37 //---------------------------------------------------------------------------
  38 // Helper class for wxZipFSHandler
  39
  40 class wxZipFSInputStream : public wxZipInputStream
  41 {
  42     public:
  43        wxZipFSInputStream(wxFSFile *file)
  44                : wxZipInputStream(*file->GetStream())
  45        {
  46             m_file = file;
  47 #if 1 //WXWIN_COMPATIBILITY_2_6
  48             m_allowSeeking = true;
  49 #endif
  50        }
  51
  52        virtual ~wxZipFSInputStream() { delete m_file; }
  53
  54     private:
  55        wxFSFile *m_file;
  56 };
  57
  58 //----------------------------------------------------------------------------
  59 // wxZipFSHandler
  60 //----------------------------------------------------------------------------
  61
  62 wxZipFSHandler::wxZipFSHandler() : wxFileSystemHandler()
  63 {
  64     m_Archive = NULL;
  65     m_ZipFile = m_Pattern = m_BaseDir = wxEmptyString;
  66     m_AllowDirs = m_AllowFiles = true;
  67     m_DirsFound = NULL;
  68 }
  69
  70
  71
  72 wxZipFSHandler::~wxZipFSHandler()
  73 {
  74     if (m_Archive)
  75         delete m_Archive;
  76     if (m_DirsFound)
  77         delete m_DirsFound;
  78 }
  79
  80
  81
  82 bool wxZipFSHandler::CanOpen(const wxString& location)
  83 {
  84     wxString p = GetProtocol(location);
  85     return (p == wxT("zip"));
  86 }
  87
  88
  89 wxFSFile* wxZipFSHandler::OpenFile(wxFileSystem& fs, const wxString& location)
  90 {
  91     wxString right = GetRightLocation(location);
  92     wxString left = GetLeftLocation(location);
  93     wxZipInputStream *s;
  94
  95     if (right.Contains(wxT("./")))
  96     {
  97         if (right.GetChar(0) != wxT('/')) right = wxT('/') + right;
  98         wxFileName rightPart(right, wxPATH_UNIX);
  99         rightPart.Normalize(wxPATH_NORM_DOTS, wxT("/"), wxPATH_UNIX);
 100         right = rightPart.GetFullPath(wxPATH_UNIX);
 101     }
 102
 103     if (right.GetChar(0) == wxT('/')) right = right.Mid(1);
 104
 105     wxFSFile *leftFile = fs.OpenFile(left);
 106     if (!leftFile)
 107        return NULL;
 108
 109     s = new wxZipFSInputStream(leftFile);
 110     if (s && s->IsOk())
 111     {
 112        wxZipEntry *ent;
 113        bool found = false;
 114        while (!found && (ent = s->GetNextEntry())) {
 115            if (ent->GetInternalName() == right)
 116                found = true;
 117            delete ent;
 118        }
 119        if (found)
 120            return new wxFSFile(s,
 121                             left + wxT("#zip:") + right,
 122                             GetMimeTypeFromExt(location),
 123                             GetAnchor(location)
 124 #if wxUSE_DATETIME
 125                             , wxDateTime(wxFileModificationTime(left))
 126 #endif // wxUSE_DATETIME
 127                             );
 128     }
 129
 130     delete s;
 131     return NULL;
 132 }
 133
 134
 135
 136 wxString wxZipFSHandler::FindFirst(const wxString& spec, int flags)
 137 {
 138     wxString right = GetRightLocation(spec);
 139     wxString left = GetLeftLocation(spec);
 140
 141     if (right.Last() == wxT('/')) right.RemoveLast();
 142
 143     if (m_Archive)
 144     {
 145         delete m_Archive;
 146         m_Archive = NULL;
 147     }
 148
 149     switch (flags)
 150     {
 151         case wxFILE:
 152             m_AllowDirs = false, m_AllowFiles = true; break;
 153         case wxDIR:
 154             m_AllowDirs = true, m_AllowFiles = false; break;
 155         default:
 156             m_AllowDirs = m_AllowFiles = true; break;
 157     }
 158
 159     m_ZipFile = left;
 160
 161     wxFSFile *leftFile = wxFileSystem().OpenFile(left);
 162     if (leftFile)
 163         m_Archive = new wxZipFSInputStream(leftFile);
 164
 165     m_Pattern = right.AfterLast(wxT('/'));
 166     m_BaseDir = right.BeforeLast(wxT('/'));
 167
 168     if (m_Archive)
 169     {
 170         if (m_AllowDirs)
 171         {
 172             delete m_DirsFound;
 173             m_DirsFound = new wxZipFilenameHashMap();
 174         }
 175         return DoFind();
 176     }
 177     return wxEmptyString;
 178 }
 179
 180
 181
 182 wxString wxZipFSHandler::FindNext()
 183 {
 184     if (!m_Archive) return wxEmptyString;
 185     return DoFind();
 186 }
 187
 188
 189
 190 wxString wxZipFSHandler::DoFind()
 191 {
 192     wxString namestr, dir, filename;
 193     wxString match = wxEmptyString;
 194
 195     while (match == wxEmptyString)
 196     {
 197         wxZipEntry *entry = m_Archive->GetNextEntry();
 198         if (!entry)
 199         {
 200             delete m_Archive;
 201             m_Archive = NULL;
 202             break;
 203         }
 204         namestr = entry->GetName(wxPATH_UNIX);
 205         delete entry;
 206
 207         if (m_AllowDirs)
 208         {
 209             dir = namestr.BeforeLast(wxT('/'));
 210             while (!dir.empty())
 211             {
 212                 if( m_DirsFound->find(dir) == m_DirsFound->end() )
 213                 {
 214                     (*m_DirsFound)[dir] = 1;
 215                     filename = dir.AfterLast(wxT('/'));
 216                     dir = dir.BeforeLast(wxT('/'));
 217                     if (!filename.empty() && m_BaseDir == dir &&
 218                                 wxMatchWild(m_Pattern, filename, false))
 219                         match = m_ZipFile + wxT("#zip:") + dir + wxT("/") + filename;
 220                 }
 221                 else
 222                     break; // already tranversed
 223             }
 224         }
 225
 226         filename = namestr.AfterLast(wxT('/'));
 227         dir = namestr.BeforeLast(wxT('/'));
 228         if (m_AllowFiles && !filename.empty() && m_BaseDir == dir &&
 229                             wxMatchWild(m_Pattern, filename, false))
 230             match = m_ZipFile + wxT("#zip:") + namestr;
 231     }
 232
 233     return match;
 234 }
 235
 236
 237
 238 #endif
 239       //wxUSE_FILESYSTEM && wxUSE_FS_ZIP && wxUSE_ZIPSTREAM