src/unix/stdpaths.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        unix/stdpaths.cpp
   3 // Purpose:     wxStandardPaths implementation for Unix & OpenVMS systems
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     2004-10-19
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2004 Vadim Zeitlin <vadim@wxwindows.org>
   9 // License:     wxWindows license
  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 #if wxUSE_STDPATHS
  28
  29 #include "wx/stdpaths.h"
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/utils.h"
  33 #endif //WX_PRECOMP
  34
  35 #include "wx/filename.h"
  36
  37 #if defined( __LINUX__ ) || defined( __VMS )
  38     #include <unistd.h>
  39 #endif
  40
  41 // ============================================================================
  42 // common VMS/Unix part of wxStandardPaths implementation
  43 // ============================================================================
  44
  45 void wxStandardPaths::SetInstallPrefix(const wxString& prefix)
  46 {
  47     m_prefix = prefix;
  48 }
  49
  50 wxString wxStandardPaths::GetUserConfigDir() const
  51 {
  52     return wxFileName::GetHomeDir();
  53 }
  54
  55 // ============================================================================
  56 // wxStandardPaths implementation for VMS
  57 // ============================================================================
  58
  59 #ifdef __VMS
  60
  61 wxString wxStandardPaths::GetInstallPrefix() const
  62 {
  63     if ( m_prefix.empty() )
  64     {
  65         wx_const_cast(wxStandardPaths *, this)->m_prefix = wxT("/sys$system");
  66     }
  67
  68     return m_prefix;
  69 }
  70
  71 wxString wxStandardPaths::GetConfigDir() const
  72 {
  73    return _T("/sys$manager");
  74 }
  75
  76 wxString wxStandardPaths::GetDataDir() const
  77 {
  78    return AppendAppName(GetInstallPrefix() + _T("/sys$share"));
  79 }
  80
  81 wxString wxStandardPaths::GetLocalDataDir() const
  82 {
  83    return AppendAppName(_T("/sys$manager"));
  84 }
  85
  86 wxString wxStandardPaths::GetUserDataDir() const
  87 {
  88    return wxFileName::GetHomeDir();
  89 }
  90
  91 wxString wxStandardPaths::GetPluginsDir() const
  92 {
  93     return wxString(); // TODO: this is wrong, it should return something
  94 }
  95
  96 wxString
  97 wxStandardPaths::GetLocalizedResourcesDir(const wxString& lang,
  98                                           ResourceCat category) const
  99 {
 100     return wxStandardPathsBase::GetLocalizedResourcesDir(lang, category);
 101 }
 102
 103 wxString wxStandardPaths::GetExecutablePath() const
 104 {
 105     return wxStandardPathsBase::GetExecutablePath();
 106 }
 107
 108 #else // !__VMS
 109
 110 // ============================================================================
 111 // wxStandardPaths implementation for Unix
 112 // ============================================================================
 113
 114 wxString wxStandardPaths::GetExecutablePath() const
 115 {
 116 #ifdef __LINUX__
 117     wxString exeStr;
 118
 119     char buf[4096];
 120     int result = readlink("/proc/self/exe", buf, WXSIZEOF(buf) - sizeof(char));
 121     if ( result != -1 )
 122     {
 123         buf[result] = '\0'; // readlink() doesn't NUL-terminate the buffer
 124
 125         // if the /proc/self/exe symlink has been dropped by the kernel for
 126         // some reason, then readlink() could also return success but
 127         // "(deleted)" as link destination...
 128         if ( strcmp(buf, "(deleted)") != 0 )
 129             exeStr = wxString(buf, wxConvLibc);
 130     }
 131
 132     if ( exeStr.empty() )
 133     {
 134         // UPX-specific hack: when using UPX on linux, the kernel will drop the
 135         // /proc/self/exe link; in this case we try to look for a special
 136         // environment variable called "   " which is created by UPX to save
 137         // /proc/self/exe contents. See
 138         //      http://sf.net/tracker/?func=detail&atid=309863&aid=1565357&group_id=9863
 139         // for more information about this issue.
 140         wxGetEnv(wxT("   "), &exeStr);
 141     }
 142
 143     if ( !exeStr.empty() )
 144         return exeStr;
 145 #endif // __LINUX__
 146
 147     return wxStandardPathsBase::GetExecutablePath();
 148 }
 149
 150 void wxStandardPaths::DetectPrefix()
 151 {
 152     // we can try to infer the prefix from the location of the executable
 153     wxString exeStr = GetExecutablePath();
 154     if ( !exeStr.empty() )
 155     {
 156         // consider that we're in the last "bin" subdirectory of our prefix
 157         size_t pos = exeStr.rfind(wxT("/bin/"));
 158         if ( pos != wxString::npos )
 159             m_prefix.assign(exeStr, 0, pos);
 160     }
 161
 162     if ( m_prefix.empty() )
 163     {
 164         m_prefix = wxT("/usr/local");
 165     }
 166 }
 167
 168 wxString wxStandardPaths::GetInstallPrefix() const
 169 {
 170     if ( m_prefix.empty() )
 171     {
 172         wxStandardPaths *pathPtr = wx_const_cast(wxStandardPaths *, this);
 173         pathPtr->DetectPrefix();
 174     }
 175
 176     return m_prefix;
 177 }
 178
 179 // ----------------------------------------------------------------------------
 180 // public functions
 181 // ----------------------------------------------------------------------------
 182
 183 wxString wxStandardPaths::GetConfigDir() const
 184 {
 185    return _T("/etc");
 186 }
 187
 188 wxString wxStandardPaths::GetDataDir() const
 189 {
 190    return AppendAppName(GetInstallPrefix() + _T("/share"));
 191 }
 192
 193 wxString wxStandardPaths::GetLocalDataDir() const
 194 {
 195    return AppendAppName(_T("/etc"));
 196 }
 197
 198 wxString wxStandardPaths::GetUserDataDir() const
 199 {
 200    return AppendAppName(wxFileName::GetHomeDir() + _T("/."));
 201 }
 202
 203 wxString wxStandardPaths::GetPluginsDir() const
 204 {
 205     return AppendAppName(GetInstallPrefix() + _T("/lib"));
 206 }
 207
 208 wxString
 209 wxStandardPaths::GetLocalizedResourcesDir(const wxString& lang,
 210                                           ResourceCat category) const
 211 {
 212     if ( category != ResourceCat_Messages )
 213         return wxStandardPathsBase::GetLocalizedResourcesDir(lang, category);
 214
 215     return GetInstallPrefix() + _T("/share/locale/") + lang + _T("/LC_MESSAGES");
 216 }
 217
 218 #endif // __VMS/!__VMS
 219
 220 #endif // wxUSE_STDPATHS