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