#if wxUSE_STDPATHS
+#include "wx/stdpaths.h"
+
#ifndef WX_PRECOMP
- #include "wx/app.h"
+ #include "wx/utils.h"
#endif //WX_PRECOMP
#include "wx/filename.h"
-#include "wx/stdpaths.h"
-
#if defined( __LINUX__ ) || defined( __VMS )
#include <unistd.h>
#endif
// wxStandardPaths implementation for Unix
// ============================================================================
-wxString wxStandardPaths::GetInstallPrefix() const
+void wxStandardPaths::DetectPrefix()
{
- if ( m_prefix.empty() )
+#ifdef __LINUX__
+ // under Linux, we can try to infer the prefix from the location of the
+ // executable
+ wxString exeStr;
+
+ char buf[4096];
+ int result = readlink("/proc/self/exe", buf, WXSIZEOF(buf) - sizeof(char));
+ if ( result != -1 )
{
- wxStandardPaths *pathPtr = wx_const_cast(wxStandardPaths *, this);
+ buf[result] = '\0'; // readlink() doesn't NUL-terminate the buffer
-#ifdef __LINUX__
- // under Linux, we can try to infer the prefix from the location of the
- // executable
- char buf[4096];
- int result = readlink("/proc/self/exe", buf, WXSIZEOF(buf) - sizeof(char));
- if ( result != -1 )
- {
- buf[result] = '\0'; // readlink() doesn't NUL-terminate the buffer
-
- const wxString exeStr(buf, wxConvLibc);
-
- // consider that we're in the last "bin" subdirectory of our prefix
- size_t pos = exeStr.rfind(wxT("/bin/"));
- if ( pos != wxString::npos )
- pathPtr->m_prefix.assign(exeStr, 0, pos);
- }
+ // if the /proc/self/exe symlink has been dropped by the kernel for
+ // some reason, then readlink() could also return success but
+ // "(deleted)" as link destination...
+ if ( strcmp(buf, "(deleted)") != 0 )
+ exeStr = wxString(buf, wxConvLibc);
+ }
+
+ if ( exeStr.empty() )
+ {
+ // UPX-specific hack: when using UPX on linux, the kernel will drop the
+ // /proc/self/exe link; in this case we try to look for a special
+ // environment variable called " " which is created by UPX to save
+ // /proc/self/exe contents. See
+ // http://sf.net/tracker/?func=detail&atid=309863&aid=1565357&group_id=9863
+ // for more information about this issue.
+ wxGetEnv(wxT(" "), &exeStr);
+ }
+
+ if ( !exeStr.empty() )
+ {
+ // consider that we're in the last "bin" subdirectory of our prefix
+ size_t pos = exeStr.rfind(wxT("/bin/"));
+ if ( pos != wxString::npos )
+ m_prefix.assign(exeStr, 0, pos);
+ }
#endif // __LINUX__
- if ( m_prefix.empty() )
- {
- pathPtr->m_prefix = wxT("/usr/local");
- }
+ if ( m_prefix.empty() )
+ {
+ m_prefix = wxT("/usr/local");
+ }
+}
+
+wxString wxStandardPaths::GetInstallPrefix() const
+{
+ if ( m_prefix.empty() )
+ {
+ wxStandardPaths *pathPtr = wx_const_cast(wxStandardPaths *, this);
+ pathPtr->DetectPrefix();
}
return m_prefix;