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- 'if (s)' where s is a QCString has been replaced by 'if(!s.isEmpty())'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0' has been replaced by 'a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, 3 insertions, 3 deletions

diff --git a/src/filedef.h b/src/filedef.h
index 02b484a..7019485 100644
--- a/src/filedef.h
+++ b/src/filedef.h
@@ -181,8 +181,8 @@ class FileDef : public DefinitionMutable, public Definition
     virtual bool generateSourceFile() const = 0;
     virtual void sortMemberLists() = 0;
 
-    virtual void addIncludeDependency(const FileDef *fd,const char *incName,bool local,bool imported) = 0;
-    virtual void addIncludedByDependency(const FileDef *fd,const char *incName,bool local,bool imported) = 0;
+    virtual void addIncludeDependency(const FileDef *fd,const QCString &incName,bool local,bool imported) = 0;
+    virtual void addIncludedByDependency(const FileDef *fd,const QCString &incName,bool local,bool imported) = 0;
 
     virtual void addMembersToMemberGroup() = 0;
     virtual void distributeMemberGroupDocumentation() = 0;
@@ -192,7 +192,7 @@ class FileDef : public DefinitionMutable, public Definition
     virtual void addListReferences() = 0;
 };
 
-FileDef *createFileDef(const std::string &p,const std::string &n,const char *ref=0,const char *dn=0);
+FileDef *createFileDef(const QCString &p,const QCString &n,const QCString &ref=QCString(),const QCString &dn=QCString());
 
 
 // --- Cast functions