Use wxString::empty() instead of comparison to wxEmptyString

src/common/fs_arc.cpp

@@ -478,7 +478,7 @@ wxString wxArchiveFSHandler::DoFind()
     wxString namestr, dir, filename;
     wxString match;
 
-    while (match == wxEmptyString)
+    while (match.empty())
     {
         m_FindEntry = m_Archive->GetNext(m_FindEntry);
 

src/common/prntbase.cpp

@@ -1632,7 +1632,7 @@ void wxPreviewControlBar::SetZoomControl(int zoom)
 
 int wxPreviewControlBar::GetZoomControl()
 {
-    if (m_zoomControl && (m_zoomControl->GetStringSelection() != wxEmptyString))
+    if (m_zoomControl && !m_zoomControl->GetStringSelection().empty())
     {
         long val;
         if (m_zoomControl->GetStringSelection().BeforeFirst(wxT('%')).ToLong(&val))

src/common/tarstrm.cpp

@@ -865,9 +865,9 @@ wxString wxTarInputStream::GetExtendedHeader(const wxString& key) const
 
 wxString wxTarInputStream::GetHeaderPath() const
 {
-    wxString path;
+    wxString path(GetExtendedHeader(wxS("path")));
 
-    if ((path = GetExtendedHeader(wxT("path"))) != wxEmptyString)
+    if (!path.empty())
         return path;
 
     path = wxString(m_hdr->Get(TAR_NAME), GetConv());
@@ -880,10 +880,10 @@ wxString wxTarInputStream::GetHeaderPath() const
 
 wxDateTime wxTarInputStream::GetHeaderDate(const wxString& key) const
 {
-    wxString value;
+    wxString value(GetExtendedHeader(key));
 
     // try extended header, stored as decimal seconds since the epoch
-    if ((value = GetExtendedHeader(key)) != wxEmptyString) {
+    if (!value.empty()) {
         wxLongLong ll;
         ll.Assign(wxAtof(value) * 1000.0);
         return ll;
@@ -897,9 +897,9 @@ wxDateTime wxTarInputStream::GetHeaderDate(const wxString& key) const
 
 wxTarNumber wxTarInputStream::GetHeaderNumber(int id) const
 {
-    wxString value;
+    wxString value(GetExtendedHeader(m_hdr->Name(id)));
 
-    if ((value = GetExtendedHeader(m_hdr->Name(id))) != wxEmptyString) {
+    if (!value.empty()) {
         wxTarNumber n = 0;
         wxString::const_iterator p = value.begin();
         while (p != value.end() && *p == ' ')
@@ -914,12 +914,12 @@ wxTarNumber wxTarInputStream::GetHeaderNumber(int id) const
 
 wxString wxTarInputStream::GetHeaderString(int id) const
 {
-    wxString value;
+    wxString value(GetExtendedHeader(m_hdr->Name(id)));
 
-    if ((value = GetExtendedHeader(m_hdr->Name(id))) != wxEmptyString)
+    if (value.empty())
-        return value;
+        value = wxString(m_hdr->Get(id), GetConv());
 
-    return wxString(m_hdr->Get(id), GetConv());
+    return value;
 }
 
 // An extended header consists of one or more records, each constructed:

src/gtk/webview_webkit.cpp

@@ -1005,7 +1005,7 @@ long wxWebViewWebKit::Find(const wxString& text, int flags)
     m_findText = text;
 
     //If the search string is empty then we clear any selection and highlight
-    if(text == "")
+    if (text.empty())
     {
         webkit_web_view_unmark_text_matches(m_web_view);
         webkit_web_view_set_highlight_text_matches(m_web_view, false);