src/palmos/dir.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/palmos/dir.cpp
   3 // Purpose:     wxDir implementation for PalmOS
   4 // Author:      William Osborne - minimal working wxPalmOS port
   5 // Modified by:
   6 // Created:     10.13.04
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) William Osborne
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/intl.h"
  29     #include "wx/log.h"
  30 #endif // PCH
  31
  32 #include "wx/dir.h"
  33 #include "wx/filefn.h"          // for wxDirExists()
  34
  35 #include "pfall.h"
  36
  37 // ----------------------------------------------------------------------------
  38 // define the types and functions used for file searching
  39 // ----------------------------------------------------------------------------
  40
  41 // ----------------------------------------------------------------------------
  42 // constants
  43 // ----------------------------------------------------------------------------
  44
  45 #ifndef MAX_PATH
  46     #define MAX_PATH 260        // from VC++ headers
  47 #endif
  48
  49 // ----------------------------------------------------------------------------
  50 // macros
  51 // ----------------------------------------------------------------------------
  52
  53 #define M_DIR       ((wxDirData *)m_data)
  54
  55 // ----------------------------------------------------------------------------
  56 // private classes
  57 // ----------------------------------------------------------------------------
  58
  59 // this class stores everything we need to enumerate the files
  60 class wxDirData
  61 {
  62 public:
  63     wxDirData(const wxString& dirname);
  64     ~wxDirData();
  65
  66     bool IsOk() const { return m_dir != NULL; }
  67
  68     void SetFileSpec(const wxString& filespec) { m_filespec = filespec; }
  69     void SetFlags(int flags) { m_flags = flags; }
  70
  71     void Close();
  72     bool Read(wxString *filename);
  73
  74     const wxString& GetName() const { return m_dirname; }
  75
  76 private:
  77     void     *m_dir;
  78
  79     wxString m_dirname;
  80     wxString m_filespec;
  81
  82     int      m_flags;
  83 };
  84
  85 // ============================================================================
  86 // implementation
  87 // ============================================================================
  88
  89 // ----------------------------------------------------------------------------
  90 // wxDirData
  91 // ----------------------------------------------------------------------------
  92
  93 wxDirData::wxDirData(const wxString& dirname)
  94          : m_dirname(dirname)
  95 {
  96     m_dir = NULL;
  97
  98     // throw away the trailing slashes
  99     size_t n = m_dirname.length();
 100     wxCHECK_RET( n, wxT("empty dir name in wxDir") );
 101
 102     while ( n > 0 && m_dirname[--n] == '/' )
 103         ;
 104
 105     m_dirname.Truncate(n + 1);
 106
 107     // do open the dir
 108     //m_dir = opendir(m_dirname.fn_str());
 109 }
 110
 111 wxDirData::~wxDirData()
 112 {
 113     Close ();
 114 }
 115
 116 void wxDirData::Close()
 117 {
 118     if ( m_dir )
 119     {
 120         if ( svfs_dir_endfind (m_dir) != 0 )
 121         {
 122             wxLogLastError(wxT("svfs_dir_endfind"));
 123         }
 124         m_dir = NULL;
 125     }
 126 }
 127
 128 bool wxDirData::Read(wxString *filename)
 129 {
 130     //dirent *de = NULL;    // just to silence compiler warnings
 131     int ret;
 132     char tmpbuf[300];
 133     bool matches = false;
 134     size_t flags_search;
 135
 136     // speed up string concatenation in the loop a bit
 137     wxString path = m_dirname;
 138     path += wxT('/');
 139     path.reserve(path.length() + 255);
 140
 141     wxString de_d_name;
 142     de_d_name.reserve(500);
 143     flags_search = 0;
 144     if (wxDIR_DIRS & m_flags) {
 145         flags_search |= SDIR_DIRS;
 146     }
 147     if (wxDIR_FILES & m_flags) {
 148         flags_search |= SDIR_FILES;
 149     }
 150     if (NULL == m_dir) {
 151 #ifdef _PACC_VER
 152 // walk around the PalmOS pacc compiler bug
 153         ret = svfs_dir_findfirst (m_dirname.fn_str().data(), &m_dir, tmpbuf, sizeof (tmpbuf), flags_search);
 154 #else
 155          ret = svfs_dir_findfirst (m_dirname.fn_str(), &m_dir, tmpbuf, sizeof (tmpbuf), flags_search);
 156 #endif
 157     } else {
 158         ret = svfs_dir_findnext (m_dir, tmpbuf, sizeof (tmpbuf));
 159     }
 160     for (; ret > 0; ) {
 161
 162 #if wxUSE_UNICODE
 163         de_d_name = wxString(tmpbuf, *wxConvFileName);
 164 #else
 165         de_d_name = tmpbuf;
 166 #endif
 167
 168         // don't return "." and ".." unless asked for
 169         if ( tmpbuf[0] == '.' &&
 170              ((tmpbuf[1] == '.' && tmpbuf[2] == '\0') ||
 171               (tmpbuf[1] == '\0')) )
 172         {
 173             if ( !(m_flags & wxDIR_DOTDOT) )
 174                 continue;
 175
 176             // we found a valid match
 177             break;
 178         }
 179
 180         // check the name
 181         if ( m_filespec.empty() )
 182         {
 183             matches = m_flags & wxDIR_HIDDEN ? true : tmpbuf[0] != '.';
 184         }
 185         else
 186         {
 187             // test against the pattern
 188             matches = wxMatchWild(m_filespec, de_d_name,
 189                                   !(m_flags & wxDIR_HIDDEN));
 190         }
 191         if (matches)
 192             break;
 193         ret = svfs_dir_findnext (m_dir, tmpbuf, sizeof (tmpbuf));
 194     }
 195
 196     *filename = de_d_name;
 197
 198     return true;
 199 }
 200
 201 // ----------------------------------------------------------------------------
 202 // wxDir helpers
 203 // ----------------------------------------------------------------------------
 204
 205 /* static */
 206 bool wxDir::Exists(const wxString& dir)
 207 {
 208     return wxDirExists(dir);
 209 }
 210
 211 // ----------------------------------------------------------------------------
 212 // wxDir construction/destruction
 213 // ----------------------------------------------------------------------------
 214
 215 wxDir::wxDir(const wxString& dirname)
 216 {
 217     m_data = NULL;
 218     (void)Open(dirname);
 219 }
 220
 221 bool wxDir::Open(const wxString& dirname)
 222 {
 223     delete M_DIR;
 224     m_data = new wxDirData(dirname);
 225
 226     return true;
 227 }
 228
 229 bool wxDir::IsOpened() const
 230 {
 231     return m_data != NULL;
 232 }
 233
 234 wxString wxDir::GetName() const
 235 {
 236     wxString name;
 237     if ( m_data )
 238     {
 239         name = M_DIR->GetName();
 240         if ( !name.empty() && (name.Last() == wxT('/')) )
 241         {
 242             // chop off the last (back)slash
 243             name.Truncate(name.length() - 1);
 244         }
 245     }
 246
 247     return name;
 248 }
 249
 250 wxDir::~wxDir()
 251 {
 252     delete M_DIR;
 253 }
 254
 255 // ----------------------------------------------------------------------------
 256 // wxDir enumerating
 257 // ----------------------------------------------------------------------------
 258
 259 bool wxDir::GetFirst(wxString *filename,
 260                      const wxString& filespec,
 261                      int flags) const
 262 {
 263     wxCHECK_MSG( IsOpened(), false, wxT("must wxDir::Open() first") );
 264     M_DIR->Close();
 265     M_DIR->SetFileSpec(filespec);
 266     M_DIR->SetFlags(flags);
 267     return GetNext(filename);
 268 }
 269
 270 bool wxDir::GetNext(wxString *filename) const
 271 {
 272     wxCHECK_MSG( IsOpened(), false, wxT("must wxDir::Open() first") );
 273     wxCHECK_MSG( filename, false, wxT("bad pointer in wxDir::GetNext()") );
 274     return M_DIR->Read(filename);
 275 }
 276