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- 'if (s)' where s is a QCString has been replaced by 'if(!s.isEmpty())'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0' has been replaced by 'a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, 2 insertions, 2 deletions

diff --git a/src/scanner.h b/src/scanner.h
index cefc934..57b54e6 100644
--- a/src/scanner.h
+++ b/src/scanner.h
@@ -31,12 +31,12 @@ class COutlineParser : public OutlineParserInterface
   public:
     COutlineParser();
     virtual ~COutlineParser();
-    void parseInput(const char *fileName,
+    void parseInput(const QCString &fileName,
                     const char *fileBuf,
                     const std::shared_ptr<Entry> &root,
                     ClangTUParser *clangParser);
     bool needsPreprocessing(const QCString &extension) const;
-    void parsePrototype(const char *text);
+    void parsePrototype(const QCString &text);
   private:
     struct Private;
     std::unique_ptr<Private> p;