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& WXUNUSED(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     // a new wxFileSystem object is needed here to avoid infinite recursion
 106     wxFSFile *leftFile = wxFileSystem().OpenFile(left);
 107     if (!leftFile)
 108        return NULL;
 109
 110     s = new wxZipFSInputStream(leftFile);
 111     if (s && s->IsOk())
 112     {
 113        bool found = false;
 114        while (!found)
 115        {
 116            wxZipEntry *ent = s->GetNextEntry();
 117            if (!ent)
 118                break;
 119            if (ent->GetInternalName() == right)
 120                found = true;
 121            delete ent;
 122        }
 123        if (found)
 124            return new wxFSFile(s,
 125                             left + wxT("#zip:") + right,
 126                             GetMimeTypeFromExt(location),
 127                             GetAnchor(location)
 128 #if wxUSE_DATETIME
 129                             , wxDateTime(wxFileModificationTime(left))
 130 #endif // wxUSE_DATETIME
 131                             );
 132     }
 133
 134     delete s;
 135     return NULL;
 136 }
 137
 138
 139
 140 wxString wxZipFSHandler::FindFirst(const wxString& spec, int flags)
 141 {
 142     wxString right = GetRightLocation(spec);
 143     wxString left = GetLeftLocation(spec);
 144
 145     if (!right.empty() && right.Last() == wxT('/')) right.RemoveLast();
 146
 147     if (m_Archive)
 148     {
 149         delete m_Archive;
 150         m_Archive = NULL;
 151     }
 152
 153     switch (flags)
 154     {
 155         case wxFILE:
 156             m_AllowDirs = false, m_AllowFiles = true; break;
 157         case wxDIR:
 158             m_AllowDirs = true, m_AllowFiles = false; break;
 159         default:
 160             m_AllowDirs = m_AllowFiles = true; break;
 161     }
 162
 163     m_ZipFile = left;
 164
 165     wxFSFile *leftFile = wxFileSystem().OpenFile(left);
 166     if (leftFile)
 167         m_Archive = new wxZipFSInputStream(leftFile);
 168
 169     m_Pattern = right.AfterLast(wxT('/'));
 170     m_BaseDir = right.BeforeLast(wxT('/'));
 171     if (m_BaseDir.StartsWith(wxT("/")))
 172         m_BaseDir = m_BaseDir.Mid(1);
 173
 174     if (m_Archive)
 175     {
 176         if (m_AllowDirs)
 177         {
 178             delete m_DirsFound;
 179             m_DirsFound = new wxZipFilenameHashMap();
 180             if (right.empty())  // allow "/" to match the archive root
 181                 return spec;
 182         }
 183         return DoFind();
 184     }
 185     return wxEmptyString;
 186 }
 187
 188
 189
 190 wxString wxZipFSHandler::FindNext()
 191 {
 192     if (!m_Archive) return wxEmptyString;
 193     return DoFind();
 194 }
 195
 196
 197
 198 wxString wxZipFSHandler::DoFind()
 199 {
 200     wxString namestr, dir, filename;
 201     wxString match = wxEmptyString;
 202
 203     while (match == wxEmptyString)
 204     {
 205         wxZipEntry *entry = m_Archive->GetNextEntry();
 206         if (!entry)
 207         {
 208             delete m_Archive;
 209             m_Archive = NULL;
 210             break;
 211         }
 212         namestr = entry->GetName(wxPATH_UNIX);
 213         delete entry;
 214
 215         if (m_AllowDirs)
 216         {
 217             dir = namestr.BeforeLast(wxT('/'));
 218             while (!dir.empty())
 219             {
 220                 if( m_DirsFound->find(dir) == m_DirsFound->end() )
 221                 {
 222                     (*m_DirsFound)[dir] = 1;
 223                     filename = dir.AfterLast(wxT('/'));
 224                     dir = dir.BeforeLast(wxT('/'));
 225                     if (!filename.empty() && m_BaseDir == dir &&
 226                                 wxMatchWild(m_Pattern, filename, false))
 227                         match = m_ZipFile + wxT("#zip:") + dir + wxT("/") + filename;
 228                 }
 229                 else
 230                     break; // already tranversed
 231             }
 232         }
 233
 234         filename = namestr.AfterLast(wxT('/'));
 235         dir = namestr.BeforeLast(wxT('/'));
 236         if (m_AllowFiles && !filename.empty() && m_BaseDir == dir &&
 237                             wxMatchWild(m_Pattern, filename, false))
 238             match = m_ZipFile + wxT("#zip:") + namestr;
 239     }
 240
 241     return match;
 242 }
 243
 244
 245
 246 #endif
 247       //wxUSE_FILESYSTEM && wxUSE_FS_ZIP && wxUSE_ZIPSTREAM