Simplify the code in wxTextFile::OnRead() slightly.

No real changes, just use a self-explanatory "lastWasCR" variable instead of
storing the last character read which wasn't used for anything except
comparing it with '\r'.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75010 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/textfile.cpp

@@ -208,8 +208,8 @@ bool wxTextFile::OnRead(const wxMBConv& conv)
 
     // now break the buffer in lines
 
-    // last processed character, we need to know if it was a CR or not
-    wxChar chLast = '\0';
+    // was the last processed character a CR?
+    bool lastWasCR = false;
 
     // the beginning of the current line, changes inside the loop
     wxString::const_iterator lineStart = str.begin();
@@ -221,7 +221,7 @@ bool wxTextFile::OnRead(const wxMBConv& conv)
         {
             case '\n':
                 // could be a DOS or Unix EOL
-                if ( chLast == '\r' )
+                if ( lastWasCR )
                 {
                     if ( p - 1 >= lineStart )
                     {
@@ -239,10 +239,11 @@ bool wxTextFile::OnRead(const wxMBConv& conv)
                 }
 
                 lineStart = p + 1;
+                lastWasCR = false;
                 break;
 
             case '\r':
-                if ( chLast == '\r' )
+                if ( lastWasCR )
                 {
                     // Mac empty line
                     AddLine(wxEmptyString, wxTextFileType_Mac);
@@ -250,10 +251,12 @@ bool wxTextFile::OnRead(const wxMBConv& conv)
                 }
                 //else: we don't know what this is yet -- could be a Mac EOL or
                 //      start of DOS EOL so wait for next char
+
+                lastWasCR = true;
                 break;
 
             default:
-                if ( chLast == '\r' )
+                if ( lastWasCR )
                 {
                     // Mac line termination
                     if ( p - 1 >= lineStart )
@@ -267,9 +270,8 @@ bool wxTextFile::OnRead(const wxMBConv& conv)
                     }
                     lineStart = p;
                 }
+                lastWasCR = false;
         }
-
-        chLast = ch;
     }
 
     // anything in the last line?
@@ -280,7 +282,7 @@ bool wxTextFile::OnRead(const wxMBConv& conv)
         // be followed by a LF.
         wxString lastLine(lineStart, end);
         wxTextFileType lastType;
-        if ( chLast == '\r' )
+        if ( lastWasCR )
         {
             // last line had Mac EOL, exclude it from the string
             lastLine.RemoveLast();