Removed handling of single-quoted strings.

applications/test/dictionary/testDictRegex

@@ -15,21 +15,21 @@ FoamFile
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 #inputMode  merge
 
-'.*'        parentValue1;
-'[n-z].*'   parentValue2;
-'f.*'       parentValue3;
+".*"        parentValue1;
+"[n-z].*"   parentValue2;
+"f.*"       parentValue3;
 keyX        parentValue4;
 keyY        parentValue5;
 
-'(.*)Dict'
+"(.*)Dict"
 {
     foo         subdictValue0;
     bar         $f.*;         // should this really match 'foo'?
 
     // result is dependent on insert order!
-    'a.*c'      subdictValue3;
-    'ab.*'      subdictValue2;
-    'a.*'       subdictValue1;
+    "a.*c"      subdictValue3;
+    "ab.*"      subdictValue2;
+    "a.*"       subdictValue1;
     abcd        \1;
 }
 

applications/utilities/mesh/manipulation/cellSet/cellSetDict

@@ -82,7 +82,7 @@ topoSetSources
     // Cells in cell zone
     zoneToCell
     {
-        name '.*Zone';      // Name of cellZone, regular expressions allowed
+        name ".*Zone";      // Name of cellZone, regular expressions allowed
     }
 
     // values of field within certain range

applications/utilities/mesh/manipulation/faceSet/faceSetDict

@@ -56,13 +56,13 @@ topoSetSources
     // All faces of patch
     patchToFace
     {
-        name '.*Wall';      // Name of patch, regular expressions allowed
+        name ".*Wall";      // Name of patch, regular expressions allowed
     }
 
     // All faces of faceZone
     zoneToFace
     {
-        name '.*Zone1';     // Name of faceZone, regular expressions allowed
+        name ".*Zone1";     // Name of faceZone, regular expressions allowed
     }
 
     // Faces with face centre within box

applications/utilities/mesh/manipulation/pointSet/pointSetDict

@@ -60,7 +60,7 @@ topoSetSources
     // All points in pointzone
     zoneToPoint
     {
-        name '.*Zone';      // name of pointZone, regular expressions allowed
+        name ".*Zone";      // name of pointZone, regular expressions allowed
     }
 
     // Select based on surface

src/OpenFOAM/db/IOstreams/IOstreams/Ostream.C

@@ -48,7 +48,7 @@ void Foam::Ostream::decrIndent()
 
 
 // Write keyType
-// write regular expression as single-quoted string
+// write regular expression as quoted string
 // write plain word as word (unquoted)
 Foam::Ostream& Foam::Ostream::write(const keyType& kw)
 {

src/OpenFOAM/db/IOstreams/IOstreams/Ostream.H

@@ -115,7 +115,7 @@ public:
             //- Write string
             virtual Ostream& write(const string&) = 0;
 
-            //- Write std::string surrounded by single quotes.
+            //- Write std::string surrounded by quotes.
             //  Optional write without quotes.
             virtual Ostream& writeQuoted
             (

src/OpenFOAM/db/IOstreams/Pstreams/OPstream.H

@@ -136,7 +136,7 @@ public:
             //- Write string
             Ostream& write(const string&);
 
-            //- Write std::string surrounded by single quotes.
+            //- Write std::string surrounded by quotes.
             //  Optional write without quotes.
             Ostream& writeQuoted
             (

src/OpenFOAM/db/IOstreams/Sstreams/ISstream.C

@@ -152,9 +152,8 @@ Foam::Istream& Foam::ISstream::read(token& t)
             return *this;
         }
 
-        // Strings: enclosed by single or double quotes.
+        // Strings: enclosed by double quotes.
         case token::BEGIN_STRING :
-        case token::BEGIN_QSTRING :
         {
             putback(c);
             string* sPtr = new string;
@@ -369,11 +368,8 @@ Foam::Istream& Foam::ISstream::read(string& str)
 
     char endTok = token::END_STRING;
 
-    if (c == token::BEGIN_QSTRING)
-    {
-        endTok = token::END_QSTRING;
-    }
-    else if (c != token::BEGIN_STRING)
+    // Note, we could also handle single-quoted strings here (if desired)
+    if (c != token::BEGIN_STRING)
     {
         buf[0] = '\0';
 

src/OpenFOAM/db/IOstreams/Sstreams/OSstream.C

@@ -118,7 +118,7 @@ Foam::Ostream& Foam::OSstream::writeQuoted
 {
     if (quoted)
     {
-        os_ << token::BEGIN_QSTRING;
+        os_ << token::BEGIN_STRING;
 
         register int backslash = 0;
         for
@@ -141,7 +141,7 @@ Foam::Ostream& Foam::OSstream::writeQuoted
                 lineNumber_++;
                 backslash++;    // backslash escape for newline
             }
-            else if (c == token::END_QSTRING)
+            else if (c == token::END_STRING)
             {
                 backslash++;    // backslash escape for quote
             }
@@ -158,7 +158,7 @@ Foam::Ostream& Foam::OSstream::writeQuoted
 
         // silently drop any trailing backslashes
         // they would otherwise appear like an escaped end-quote
-        os_ << token::END_QSTRING;
+        os_ << token::END_STRING;
     }
     else
     {

src/OpenFOAM/db/IOstreams/Sstreams/OSstream.H

@@ -141,7 +141,7 @@ public:
             //  double-quote.
             virtual Ostream& write(const string&);
 
-            //- Write std::string surrounded by single quotes.
+            //- Write std::string surrounded by quotes.
             //  Optional write without quotes.
             virtual Ostream& writeQuoted
             (

src/OpenFOAM/db/IOstreams/Sstreams/prefixOSstream.H

@@ -114,8 +114,8 @@ public:
             //- Write string
             virtual Ostream& write(const string&);
 
-            //- Write std::string
-            //  Specify if string should be single quoted or remain unquoted.
+            //- Write std::string surrounded by quotes.
+            //  Optional write without quotes.
             virtual Ostream& writeQuoted
             (
                 const std::string&,

src/OpenFOAM/db/IOstreams/token/token.H

@@ -109,8 +109,6 @@ public:
 
         BEGIN_STRING   = '"',
         END_STRING     = BEGIN_STRING,
-        BEGIN_QSTRING  = '\'',
-        END_QSTRING    = BEGIN_QSTRING,
 
         ASSIGN         = '=',
         ADD            = '+',