Fix reading of files with Mac EOLs in wxTextFile.

The last CR-terminated line wasn't handled correctly.

Fix this now and add unit tests to ensure that it stays fixed.

Closes #15583.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75009 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/changes.txt

@@ -567,6 +567,7 @@ All:
 
 - Add possibility to validate the input files against a schema to wxrc.
 - Fix recently broken compilation with Intel compiler.
+- Fix reading of files with Mac EOLs in wxTextFile.
 
 All (GUI):
 

src/common/textfile.cpp

@@ -275,8 +275,24 @@ bool wxTextFile::OnRead(const wxMBConv& conv)
     // anything in the last line?
     if ( lineStart != end )
     {
-        // add unterminated last line
+        // add the last line, notice that it may have been terminated with CR
-        AddLine(wxString(lineStart, end), wxTextFileType_None);
+        // as we don't end the line immediately when we see a CR, as it could
+        // be followed by a LF.
+        wxString lastLine(lineStart, end);
+        wxTextFileType lastType;
+        if ( chLast == '\r' )
+        {
+            // last line had Mac EOL, exclude it from the string
+            lastLine.RemoveLast();
+            lastType = wxTextFileType_Mac;
+        }
+        else
+        {
+            // last line wasn't terminated at all
+            lastType = wxTextFileType_None;
+        }
+
+        AddLine(lastLine, lastType);
     }
 
     return true;

tests/textfile/textfiletest.cpp

@@ -43,8 +43,11 @@ private:
     CPPUNIT_TEST_SUITE( TextFileTestCase );
         CPPUNIT_TEST( ReadEmpty );
         CPPUNIT_TEST( ReadDOS );
+        CPPUNIT_TEST( ReadDOSLast );
         CPPUNIT_TEST( ReadUnix );
+        CPPUNIT_TEST( ReadUnixLast );
         CPPUNIT_TEST( ReadMac );
+        CPPUNIT_TEST( ReadMacLast );
         CPPUNIT_TEST( ReadMixed );
 #if wxUSE_UNICODE
         CPPUNIT_TEST( ReadUTF8 );
@@ -55,8 +58,11 @@ private:
 
     void ReadEmpty();
     void ReadDOS();
+    void ReadDOSLast();
     void ReadUnix();
+    void ReadUnixLast();
     void ReadMac();
+    void ReadMacLast();
     void ReadMixed();
 #if wxUSE_UNICODE
     void ReadUTF8();
@@ -120,6 +126,18 @@ void TextFileTestCase::ReadDOS()
     CPPUNIT_ASSERT_EQUAL( wxString(wxT("baz")), f.GetLastLine() );
 }
 
+void TextFileTestCase::ReadDOSLast()
+{
+    CreateTestFile("foo\r\n");
+
+    wxTextFile f;
+    CPPUNIT_ASSERT( f.Open(GetTestFileName()) );
+
+    CPPUNIT_ASSERT_EQUAL( 1, f.GetLineCount() );
+    CPPUNIT_ASSERT_EQUAL( wxTextFileType_Dos, f.GetLineType(0) );
+    CPPUNIT_ASSERT_EQUAL( "foo", f.GetFirstLine() );
+}
+
 void TextFileTestCase::ReadUnix()
 {
     CreateTestFile("foo\nbar\nbaz");
@@ -134,6 +152,18 @@ void TextFileTestCase::ReadUnix()
     CPPUNIT_ASSERT_EQUAL( wxString(wxT("baz")), f.GetLastLine() );
 }
 
+void TextFileTestCase::ReadUnixLast()
+{
+    CreateTestFile("foo\n");
+
+    wxTextFile f;
+    CPPUNIT_ASSERT( f.Open(GetTestFileName()) );
+
+    CPPUNIT_ASSERT_EQUAL( 1, f.GetLineCount() );
+    CPPUNIT_ASSERT_EQUAL( wxTextFileType_Unix, f.GetLineType(0) );
+    CPPUNIT_ASSERT_EQUAL( "foo", f.GetFirstLine() );
+}
+
 void TextFileTestCase::ReadMac()
 {
     CreateTestFile("foo\rbar\rbaz");
@@ -148,6 +178,18 @@ void TextFileTestCase::ReadMac()
     CPPUNIT_ASSERT_EQUAL( wxString(wxT("baz")), f.GetLastLine() );
 }
 
+void TextFileTestCase::ReadMacLast()
+{
+    CreateTestFile("foo\r");
+
+    wxTextFile f;
+    CPPUNIT_ASSERT( f.Open(GetTestFileName()) );
+
+    CPPUNIT_ASSERT_EQUAL( 1, f.GetLineCount() );
+    CPPUNIT_ASSERT_EQUAL( wxTextFileType_Mac, f.GetLineType(0) );
+    CPPUNIT_ASSERT_EQUAL( "foo", f.GetFirstLine() );
+}
+
 void TextFileTestCase::ReadMixed()
 {
     CreateTestFile("foo\rbar\r\nbaz\n");