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- 'if (s)' where s is a QCString has been replaced by 'if(!s.isEmpty())'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0' has been replaced by 'a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/sqlcode.h b/src/sqlcode.h
index aa465d7..64d7d06 100644
--- a/src/sqlcode.h
+++ b/src/sqlcode.h
@@ -33,11 +33,11 @@ class SQLCodeParser : public CodeParserInterface
     SQLCodeParser();
     virtual ~SQLCodeParser();
     void parseCode(CodeOutputInterface &codeOutIntf,
-                   const char *scopeName,
+                   const QCString &scopeName,
                    const QCString &input,
                    SrcLangExt,
                    bool isExampleBlock,
-                   const char *exampleName=0,
+                   const QCString &exampleName=QCString(),
                    FileDef *fileDef=0,
                    int startLine=-1,
                    int endLine=-1,