added wxTextEntry::DoGetValue() to allow returning empty string if the control curren...

[wxWidgets.git] / src / os2 / utils.cpp

diff --git a/src/os2/utils.cpp b/src/os2/utils.cpp
index 7fb53b78a362e1a573d8df3322aa725f3f9f89d5..5a03ba30f3070e1c6d2aba8f569a2a59d4d04a37 100644 (file)
--- a/src/os2/utils.cpp
+++ b/src/os2/utils.cpp
@@ -93,13 +93,12 @@ bool wxGetHostName( wxChar* zBuf, int nMaxSize )
                                 ,(void*)zBuf
                                 ,(ULONG)nMaxSize - 1
                                );
+        zBuf[nMaxSize] = _T('\0');
     }
     else
     {
-        wxStrncpy(zBuf, zSysname, nMaxSize - 1);
+        wxStrlcpy(zBuf, zSysname, nMaxSize);
     }
-
-    zBuf[nMaxSize] = _T('\0');
 #endif
 
     return *zBuf ? true : false;
@@ -121,7 +120,7 @@ bool wxGetUserName( wxChar* zBuf, int nMaxSize )
 #ifdef USE_NET_API
     wxGetUserId( zBuf, nMaxSize );
 #else
-    wxStrncpy(zBuf, _T("Unknown User"), nMaxSize);
+    wxStrlcpy(zBuf, _T("Unknown User"), nMaxSize);
 #endif
     return true;
 }
@@ -157,7 +156,7 @@ bool wxShell( const wxString& rCommand )
     SData.PgmName  = (char*)zShell;
 
     sInputs = _T("/C ") + rCommand;
-    SData.PgmInputs     = (BYTE*)sInputs.char_str();
+    SData.PgmInputs     = (BYTE*)sInputs.wx_str();
     SData.TermQ         = 0;
     SData.Environment   = 0;
     SData.InheritOpt    = SSF_INHERTOPT_SHELL;
@@ -226,7 +225,7 @@ unsigned long wxGetProcessId()
 bool wxGetEnv(const wxString& var, wxString *value)
 {
     // wxGetenv is defined as getenv()
-    wxChar *p = wxGetenv(var);
+    wxChar *p = wxGetenv((const wxChar *)var);
     if ( !p )
         return false;
 
@@ -238,11 +237,18 @@ bool wxGetEnv(const wxString& var, wxString *value)
     return true;
 }
 
-bool wxSetEnv(const wxString& variable, const wxChar *value)
+static bool wxDoSetEnv(const wxString& variable, const char *value)
 {
 #if defined(HAVE_SETENV)
-    return setenv(variable.mb_str(), value ? wxString(value).mb_str().data()
-                                           : NULL, 1 /* overwrite */) == 0;
+    if ( !value ) 
+    { 
+#ifdef HAVE_UNSETENV 
+        return unsetenv(variable.mb_str()) == 0; 
+#else 
+        value = _T(""); // mustn't pass NULL to setenv() 
+#endif 
+    } 
+    return setenv(variable.mb_str(), value, 1 /* overwrite */) == 0;
 #elif defined(HAVE_PUTENV)
     wxString s = variable;
     if ( value )
@@ -263,6 +269,16 @@ bool wxSetEnv(const wxString& variable, const wxChar *value)
 #endif
 }
 
+bool wxSetEnv(const wxString& variable, const wxString& value)
+{
+    return wxDoSetEnv(variable, value.mb_str());
+}
+
+bool wxUnsetEnv(const wxString& variable)
+{
+    return wxDoSetEnv(variable, NULL);
+}
+
 void wxMilliSleep(
   unsigned long                     ulMilliseconds
 )
@@ -385,59 +401,45 @@ const wxChar* wxGetHomeDir(
     return rStrDir.c_str();
 }
 
-// Hack for OS/2
-#if wxUSE_UNICODE
-const wxMB2WXbuf wxGetUserHome( const wxString &rUser )
-#else // just for binary compatibility -- there is no 'const' here
-wxChar* wxGetUserHome ( const wxString &rUser )
-#endif
+wxString wxGetUserHome ( const wxString &rUser )
 {
     wxChar*    zHome;
-    wxString   sUser1(rUser);
+    wxString   sUser(rUser);
+
+    wxString home;
 
-    wxChar *wxBuffer = new wxChar[256];
 #ifndef __EMX__
-    if (!sUser1.empty())
+    if (!sUser.empty())
     {
-        wxChar                      zTmp[64];
+        const wxString currentUser = wxGetUserId();
 
-        if (wxGetUserId( zTmp
-                        ,sizeof(zTmp)/sizeof(char)
-                       ))
+        // Guests belong in the temp dir
+        if ( currentUser == "annonymous" )
         {
-            // Guests belong in the temp dir
-            if (wxStricmp(zTmp, _T("annonymous")) == 0)
-            {
-                if ((zHome = wxGetenv(_T("TMP"))) != NULL    ||
-                    (zHome = wxGetenv(_T("TMPDIR"))) != NULL ||
-                    (zHome = wxGetenv(_T("TEMP"))) != NULL)
-                    delete[] wxBuffer;
-                    return *zHome ? zHome : (wxChar*)_T("\\");
-            }
-            if (wxStricmp(zTmp, WXSTRINGCAST sUser1) == 0)
-                sUser1 = wxEmptyString;
+            zHome = wxGetenv(_T("TMP"));
+            if ( !zHome )
+                zHome = wxGetenv(_T("TMPDIR"));
+            if ( !zHome )
+                zHome = wxGetenv(_T("TEMP"));
+
+            if ( zHome && *zHome )
+                return zHome;
         }
+
+        if ( sUser == currentUser )
+            sUser.clear();
     }
 #endif
-    if (sUser1.empty())
+    if (sUser.empty())
     {
         if ((zHome = wxGetenv(_T("HOME"))) != NULL)
         {
-            wxStrcpy(wxBuffer, zHome);
-            wxUnix2DosFilename(wxBuffer);
-#if wxUSE_UNICODE
-            wxWCharBuffer retBuffer (wxBuffer);
-            delete[] wxBuffer;
-            return retBuffer;
-#else
-            wxStrcpy(zHome, wxBuffer);
-            delete[] wxBuffer;
-            return zHome;
-#endif
+            home = zHome;
+            home.Replace("/", "\\");
         }
     }
-    delete[] wxBuffer;
-    return (wxChar*)wxEmptyString; // No home known!
+
+    return home;
 }
 
 bool wxGetDiskSpace(const wxString& path,
@@ -457,7 +459,7 @@ bool wxGetDiskSpace(const wxString& path,
     if (wxDirExists(fn.GetFullPath()) == false)
         return false;
 
-    disknum = 1 + wxToupper(fn.GetVolume().GetChar(0)) - _T('A');
+    disknum = wxToupper(fn.GetVolume().GetChar(0)) - _T('A') + 1;
 
     rc = ::DosQueryFSInfo(disknum,             // 1 = A, 2 = B, 3 = C, ...
                           FSIL_ALLOC,          // allocation info