1 files changed, 96 insertions, 0 deletions
diff --git a/debian/htdig/htdig-3.2.0b6/htsearch/SimpleQueryParser.cc b/debian/htdig/htdig-3.2.0b6/htsearch/SimpleQueryParser.cc
new file mode 100644
index 00000000..ebe1901e
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+++ b/debian/htdig/htdig-3.2.0b6/htsearch/SimpleQueryParser.cc
@@ -0,0 +1,96 @@
+//
+// SimpleQueryParser.cc 
+//
+// SimpleQueryParser: (abstract) a family of parsers that generate queries
+//                    for strings with the syntax (word|phrase){(word|phrase)}
+//                    combining them in a single operator.
+//                    The operator to apply is tbd by concrete classes.
+//
+// Part of the ht://Dig package   <http://www.htdig.org/>
+// Copyright (c) 1995-2004 The ht://Dig Group
+// For copyright details, see the file COPYING in your distribution
+// or the GNU Library General Public License (LGPL) version 2 or later
+// <http://www.gnu.org/copyleft/lgpl.html>
+//
+// $Id: SimpleQueryParser.cc,v 1.4 2004/05/28 13:15:24 lha Exp $
+//
+
+#include "SimpleQueryParser.h"
+#include "OperatorQuery.h"
+
+//
+// expr == term { term }
+//
+Query *
+SimpleQueryParser::ParseExpression()
+{
+	Query *result = 0;
+	Query *term = ParseTerm();
+	if(term)
+	{
+		if(token.IsEnd())
+		{
+			result = term;
+		}
+		else
+		{
+			result = MakeQuery();
+			result->Add(term);
+			while(!token.IsEnd())
+			{
+				term = ParseTerm();
+				if(term)
+				{
+					result->Add(term);
+				}
+			}
+		}
+	}
+	if(!term)
+	{
+		delete result;
+		result = 0;
+	}
+	return result;
+}
+
+
+//
+// term == word | '"' phrase '"'
+//
+Query *
+SimpleQueryParser::ParseTerm()
+{
+	Query *result = 0;
+
+	if(token.IsQuote())
+	{
+		token.Next();
+		result = ParsePhrase();
+		if(result)
+		{
+			if(token.IsQuote())
+			{
+				token.Next();
+			}
+			else
+			{
+				Expected("closing \"");
+				delete result;
+				result = 0;
+			}
+		}
+	}
+	else if(token.IsWord())
+	{
+		// don't advance token here!
+		result = ParseWord();
+	}
+	else
+	{
+		Expected("a word or a quoted phrase");
+	}
+	return result;
+}
+
+