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 // Licence:     wxWindows Licence
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9
  10 #ifdef __GNUG__
  11 #pragma implementation
  12 #endif
  13
  14 #include "wx/wxprec.h"
  15
  16 #ifdef __BORDLANDC__
  17 #pragma hdrstop
  18 #endif
  19
  20 #if wxUSE_FS_ZIP
  21
  22 #ifndef WXPRECOMP
  23 #include "wx/wx.h"
  24 #endif
  25
  26 #include "wx/filesys.h"
  27 #include "wx/zipstrm.h"
  28 #include "wx/fs_zip.h"
  29
  30 /* Not the right solution (paths in makefiles) but... */
  31 #ifdef __BORLANDC__
  32 #include "../common/unzip.h"
  33 #else
  34 #include "unzip.h"
  35 #endif
  36
  37
  38 //--------------------------------------------------------------------------------
  39 // wxZipFSHandler
  40 //--------------------------------------------------------------------------------
  41
  42
  43
  44 wxZipFSHandler::wxZipFSHandler() : wxFileSystemHandler()
  45 {
  46     m_Archive = NULL;
  47     m_ZipFile = m_Pattern = m_BaseDir = wxEmptyString;
  48     m_AllowDirs = m_AllowFiles = TRUE;
  49 }
  50
  51
  52
  53 wxZipFSHandler::~wxZipFSHandler()
  54 {
  55     if (m_Archive)
  56         unzClose((unzFile)m_Archive);
  57 }
  58
  59
  60
  61 bool wxZipFSHandler::CanOpen(const wxString& location)
  62 {
  63     wxString p = GetProtocol(location);
  64     return (p == "zip");
  65 }
  66
  67
  68
  69
  70 wxFSFile* wxZipFSHandler::OpenFile(wxFileSystem& WXUNUSED(fs), const wxString& location)
  71 {
  72     wxString right = GetRightLocation(location);
  73     wxString left = GetLeftLocation(location);
  74     wxInputStream *s;
  75
  76     if (GetProtocol(left) != "file") {
  77         return NULL;
  78     }
  79
  80     s = new wxZipInputStream(left, right);
  81     if (s && (s -> LastError() == wxStream_NOERROR)) {
  82         return new wxFSFile(s,
  83                             left + "#zip:" + right,
  84                             GetMimeTypeFromExt(location),
  85                             GetAnchor(location));
  86     }
  87     else return NULL;
  88 }
  89
  90
  91
  92 wxString wxZipFSHandler::FindFirst(const wxString& spec, int flags)
  93 {
  94     wxString right = GetRightLocation(spec);
  95     wxString left = GetLeftLocation(spec);
  96
  97     if (right.Last() == wxT('/')) right.RemoveLast();
  98
  99     if (m_Archive) {
 100         unzClose((unzFile)m_Archive);
 101         m_Archive = NULL;
 102     }
 103
 104     if (GetProtocol(left) != "file") {
 105         return wxEmptyString;
 106     }
 107
 108     switch (flags) {
 109         case wxFILE  : m_AllowDirs = FALSE, m_AllowFiles = TRUE; break;
 110         case wxDIR   : m_AllowDirs = TRUE, m_AllowFiles = FALSE; break;
 111         default : m_AllowDirs = m_AllowFiles = TRUE; break;
 112     }
 113
 114     m_ZipFile = left;
 115     m_Archive = (void*) unzOpen(m_ZipFile.fn_str());
 116     m_Pattern = right.AfterLast(wxT('/'));
 117     m_BaseDir = right.BeforeLast(wxT('/'));
 118
 119     if (m_Archive) {
 120         if (unzGoToFirstFile((unzFile)m_Archive) != UNZ_OK) {
 121             unzClose((unzFile)m_Archive);
 122             m_Archive = NULL;
 123         }
 124     }
 125     return DoFind();
 126 }
 127
 128
 129
 130 wxString wxZipFSHandler::FindNext()
 131 {
 132     if (!m_Archive) return wxEmptyString;
 133     return DoFind();
 134 }
 135
 136
 137
 138 wxString wxZipFSHandler::DoFind()
 139 {
 140     static char namebuf[1024]; // char, not wxChar!
 141     char *c;
 142     wxString fn, dir, name;
 143     wxString match = wxEmptyString;
 144     bool wasdir;
 145
 146     while (match == wxEmptyString)
 147     {
 148         unzGetCurrentFileInfo((unzFile)m_Archive, NULL, namebuf, 1024, NULL, 0, NULL, 0);
 149         for (c = namebuf; *c; c++) if (*c == '\\') *c = '/';
 150         fn = namebuf;
 151         if (fn.Last() == wxT('/')) {
 152             fn.RemoveLast();
 153             wasdir = TRUE;
 154         }
 155         else wasdir = FALSE;
 156
 157         name = fn.AfterLast(wxT('/'));
 158         dir = fn.BeforeLast(wxT('/'));
 159
 160         if (dir == m_BaseDir) {
 161             if (m_AllowFiles && !wasdir && wxMatchWild(m_Pattern, name, FALSE))
 162                 match = m_ZipFile + wxT("#zip:") + fn;
 163             if (m_AllowDirs && wasdir && wxMatchWild(m_Pattern, name, FALSE))
 164                 match = m_ZipFile + wxT("#zip:") + fn;
 165         }
 166
 167         if (unzGoToNextFile((unzFile)m_Archive) != UNZ_OK) {
 168             unzClose((unzFile)m_Archive);
 169             m_Archive = NULL;
 170             break;
 171         }
 172     }
 173
 174     return match;
 175 }
 176
 177
 178
 179 #endif // wxUSE_FS_ZIP