Refactoring: remove implicit conversion from QCString to const char *

This commit changes the following in relation to string use
- The implicit convert from 'QCString' to 'const char *' is removed
- Strings parameters use 'const QCString &' as much as possible in favor
  over 'const char *'
- 'if (s)' where s is a QCString has been replaced by 'if(!s.isEmpty())'
- data() now always returns a valid C-string and not a 0-pointer.
- when passing a string 's' to printf and related functions 'qPrint(s)' is
  used instead of 's.data()'
- for empty string arguments 'QCString()' is used instead of '0'
- The copy() operation has been removed
- Where possible 'qstrcmp(a,b)==0' has been replaces by 'a==b' and
  'qstrcmp(a,b)<0' has been replaced by 'a<b'
- Parameters of string type that were default initialized with '= 0' are
  no initialized with '= QCString()'

1 files changed, 8 insertions, 8 deletions

diff --git a/src/ftvhelp.h b/src/ftvhelp.h
index 57fbf12..196b01c 100644
--- a/src/ftvhelp.h
+++ b/src/ftvhelp.h
@@ -43,17 +43,17 @@ class FTVHelp : public IndexIntf
     void incContentsDepth();
     void decContentsDepth();
     void addContentsItem(bool isDir,
-                         const char *name,
-                         const char *ref,
-                         const char *file,
-                         const char *anchor,
+                         const QCString &name,
+                         const QCString &ref,
+                         const QCString &file,
+                         const QCString &anchor,
                          bool separateIndex,
                          bool addToNavIndex,
                          const Definition *def);
-    void addIndexItem(const Definition *,const MemberDef *,const char *,const char *) {}
-    void addIndexFile(const char *) {}
-    void addImageFile(const char *) {}
-    void addStyleSheetFile(const char *) {}
+    void addIndexItem(const Definition *,const MemberDef *,const QCString &,const QCString &) {}
+    void addIndexFile(const QCString &) {}
+    void addImageFile(const QCString &) {}
+    void addStyleSheetFile(const QCString &) {}
     void generateTreeView();
     void generateTreeViewInline(TextStream &t);
     static void generateTreeViewImages();