Convert indexOf->startsWith and lastIndexOf->endsWith

This is both an optimisation and a cleanup.

This converts code like
   aStr.indexOf("XX") == 0
to
  aStr.startsWith("XX")
and converts code like
  aStr.lastIndexOf("XXX") == aStr.getLength() - 3
to
  aStr.endsWith("XXX")

Note that in general
  aStr.lastIndexOf("X") == aStr.getLength() - 1
converts to
  aStr.isEmpty() || aStr.endsWith("X")
so I used the surrounding context to determine if aStr could be empty
when modifying the code.

Change-Id: I22cb8ca7c2a4d0288b001f72adb27fd63af87669

1 files changed, 11 insertions, 12 deletions

diff --git a/connectivity/source/drivers/mork/MResultSet.cxx b/connectivity/source/drivers/mork/MResultSet.cxx
index 524f9d02a2ac..d14a0468d7e3 100644
--- a/connectivity/source/drivers/mork/MResultSet.cxx
+++ b/connectivity/source/drivers/mork/MResultSet.cxx
@@ -761,6 +761,10 @@ void OResultSet::parseParameter( const OSQLParseNode* pNode, OUString& rMatchStr
 #endif
 }
 
+#define WILDCARD "%"
+#define ALT_WILDCARD "*"
+static const sal_Unicode MATCHCHAR = '_';
+
 void OResultSet::analyseWhereClause( const OSQLParseNode*                 parseTree,
                                      MQueryExpression                     &queryExpression)
 {
@@ -912,10 +916,6 @@ void OResultSet::analyseWhereClause( const OSQLParseNode*                 parseT
             m_pStatement->getOwnConnection()->throwSQLException( STR_QUERY_INVALID_LIKE_STRING, *this );
         }
 
-        const sal_Unicode WILDCARD = '%';
-        const sal_Unicode ALT_WILDCARD = '*';
-        const sal_Unicode MATCHCHAR = '_';
-
         OUString sTableRange;
         if(SQL_ISRULE(pColumn,column_ref))
             m_pSQLIterator->getColumnRange(pColumn,columnName,sTableRange);
@@ -926,7 +926,7 @@ void OResultSet::analyseWhereClause( const OSQLParseNode*                 parseT
             parseParameter( pAtom, matchString );
             // Replace all '*' with '%' : UI Usually does this but not with
             // Parameters for some reason.
-            matchString = matchString.replace( ALT_WILDCARD, WILDCARD );
+            matchString = matchString.replaceAll( ALT_WILDCARD, WILDCARD );
         }
         else
         {
@@ -935,7 +935,7 @@ void OResultSet::analyseWhereClause( const OSQLParseNode*                 parseT
 
         // Determine where '%' character is...
 
-        if ( matchString.equals( OUString( WILDCARD ) ) )
+        if ( matchString == WILDCARD )
         {
             // String containing only a '%' and nothing else
             op = MQueryOp::Exists;
@@ -951,8 +951,8 @@ void OResultSet::analyseWhereClause( const OSQLParseNode*                 parseT
             else
                 op = MQueryOp::Contains;
         }
-        else if (  matchString.indexOf ( WILDCARD ) == 0
-                   && matchString.lastIndexOf ( WILDCARD ) == matchString.getLength() -1
+        else if (  matchString.startsWith( WILDCARD )
+                   && matchString.endsWith( WILDCARD )
                    && matchString.indexOf ( WILDCARD, 1 ) == matchString.lastIndexOf ( WILDCARD )
                    && matchString.indexOf( MATCHCHAR ) == -1
                  )
@@ -980,7 +980,7 @@ void OResultSet::analyseWhereClause( const OSQLParseNode*                 parseT
                 )
             {
                 // One occurrence of '%' - no '_' matches...
-                if ( matchString.indexOf ( WILDCARD ) == 0 )
+                if ( matchString.startsWith( WILDCARD ) )
                 {
                     op = MQueryOp::EndsWith;
                     matchString = matchString.replaceAt( 0, 1, OUString());
@@ -993,7 +993,7 @@ void OResultSet::analyseWhereClause( const OSQLParseNode*                 parseT
                 else
                 {
                     sal_Int32 pos = matchString.indexOf ( WILDCARD );
-                    matchString = matchString.replaceAt( pos, 1,OUString(".*") );
+                    matchString = matchString.replaceAt( pos, 1, ".*" );
                     op = MQueryOp::RegExp;
                 }
 
@@ -1001,13 +1001,12 @@ void OResultSet::analyseWhereClause( const OSQLParseNode*                 parseT
             else
             {
                 // Most Complex, need to use an RE
-                sal_Int32 pos = matchString.indexOf ( WILDCARD );
+                sal_Int32 pos;
                 while ( (pos = matchString.indexOf ( WILDCARD )) != -1 )
                 {
                     matchString = matchString.replaceAt( pos, 1, OUString(".*") );
                 }
 
-                pos = matchString.indexOf ( MATCHCHAR );
                 while ( (pos = matchString.indexOf( MATCHCHAR )) != -1 )
                 {
                     matchString = matchString.replaceAt( pos, 1, OUString(".") );