Fix parsing of negated long options in wxCmdLineParser.

Negated long options were not recognized in wxCmdLineParser::Parse(), do check
for them now.

Also extend the unit test to check for negated options.

Closes #13335.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@68316 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/changes.txt

@@ -437,6 +437,10 @@ Major new features in this release
 2.9.3:
 ------
 
+All:
+
+- Fix parsing of negated long options in wxCmdLineParser (roed_bis).
+
 All (GUI):
 
 - Support float, double and file name values in wxGenericValidator (troelsk).

src/common/cmdline.cpp

@@ -707,11 +707,45 @@ int wxCmdLineParser::Parse(bool showUsage)
 
                 if (longOptionsEnabled)
                 {
+                    wxString errorOpt;
+
                     optInd = m_data->FindOptionByLongName(name);
                     if ( optInd == wxNOT_FOUND )
                     {
-                        errorMsg << wxString::Format(_("Unknown long option '%s'"), name.c_str())
+                        // Check if this could be a negatable long option.
-                                 << wxT('\n');
+                        if ( name.Last() == '-' )
+                        {
+                            name.RemoveLast();
+
+                            optInd = m_data->FindOptionByLongName(name);
+                            if ( optInd != wxNOT_FOUND )
+                            {
+                                if ( !(m_data->m_options[optInd].flags &
+                                        wxCMD_LINE_SWITCH_NEGATABLE) )
+                                {
+                                    errorOpt.Printf
+                                             (
+                                              _("Option '%s' can't be negated"),
+                                              name
+                                             );
+                                    optInd = wxNOT_FOUND;
+                                }
+                            }
+                        }
+
+                        if ( optInd == wxNOT_FOUND )
+                        {
+                            if ( errorOpt.empty() )
+                            {
+                                errorOpt.Printf
+                                         (
+                                          _("Unknown long option '%s'"),
+                                          name
+                                         );
+                            }
+
+                            errorMsg << errorOpt << wxT('\n');
+                        }
                     }
                 }
                 else

tests/cmdline/cmdlinetest.cpp

@@ -139,6 +139,8 @@ void CmdLineTestCase::ParseSwitches()
     p.AddSwitch("b");
     p.AddSwitch("c");
     p.AddSwitch("d");
+    p.AddSwitch("n", "neg", "Switch that can be negated",
+                wxCMD_LINE_SWITCH_NEGATABLE);
 
     p.SetCmdLine("");
     CPPUNIT_ASSERT_EQUAL(0, p.Parse(false) );
@@ -182,6 +184,23 @@ void CmdLineTestCase::ParseSwitches()
     CPPUNIT_ASSERT( !p.Found("b") );
     CPPUNIT_ASSERT( !p.Found("c") );
     CPPUNIT_ASSERT( p.Found("d") );
+
+    p.SetCmdLine("-n");
+    CPPUNIT_ASSERT_EQUAL(0, p.Parse(false) );
+    CPPUNIT_ASSERT_EQUAL(wxCMD_SWITCH_NOT_FOUND, p.FoundSwitch("a") );
+    CPPUNIT_ASSERT_EQUAL(wxCMD_SWITCH_ON, p.FoundSwitch("n") );
+
+    p.SetCmdLine("-n-");
+    CPPUNIT_ASSERT_EQUAL(0, p.Parse(false) );
+    CPPUNIT_ASSERT_EQUAL(wxCMD_SWITCH_OFF, p.FoundSwitch("neg") );
+
+    p.SetCmdLine("--neg");
+    CPPUNIT_ASSERT_EQUAL(0, p.Parse(false) );
+    CPPUNIT_ASSERT_EQUAL(wxCMD_SWITCH_ON, p.FoundSwitch("neg") );
+
+    p.SetCmdLine("--neg-");
+    CPPUNIT_ASSERT_EQUAL(0, p.Parse(false) );
+    CPPUNIT_ASSERT_EQUAL(wxCMD_SWITCH_OFF, p.FoundSwitch("n") );
 }
 
 void CmdLineTestCase::Usage()