1 files changed, 66 insertions, 0 deletions
diff --git a/src/boost/libs/spirit/example/karma/escaped_string.cpp b/src/boost/libs/spirit/example/karma/escaped_string.cpp
new file mode 100644
index 000000000..f3c2fe6f4
--- /dev/null
+++ b/src/boost/libs/spirit/example/karma/escaped_string.cpp
@@ -0,0 +1,66 @@
+//  Copyright (c) 2001-2010 Hartmut Kaiser
+// 
+//  Distributed under the Boost Software License, Version 1.0. (See accompanying 
+//  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//  The purpose of this example is to show how any character sequence can be
+//  printed while being properly quoted.
+
+#include <boost/config/warning_disable.hpp>
+#include <boost/spirit/include/karma.hpp>
+
+namespace client
+{
+    namespace karma = boost::spirit::karma;
+
+    template <typename OutputIterator>
+    struct escaped_string
+      : karma::grammar<OutputIterator, std::string(char const*)>
+    {
+        escaped_string()
+          : escaped_string::base_type(esc_str)
+        {
+            esc_char.add('\a', "\\a")('\b', "\\b")('\f', "\\f")('\n', "\\n")
+                        ('\r', "\\r")('\t', "\\t")('\v', "\\v")('\\', "\\\\")
+                        ('\'', "\\\'")('\"', "\\\"")
+                ;
+
+            esc_str =   karma::lit(karma::_r1) 
+                    << *(esc_char | karma::print | "\\x" << karma::hex) 
+                    <<  karma::lit(karma::_r1)
+                ;
+        }
+
+        karma::rule<OutputIterator, std::string(char const*)> esc_str;
+        karma::symbols<char, char const*> esc_char;
+    };
+}
+
+///////////////////////////////////////////////////////////////////////////////
+int main()
+{
+    namespace karma = boost::spirit::karma;
+
+    typedef std::back_insert_iterator<std::string> sink_type;
+
+    std::string generated;
+    sink_type sink(generated);
+
+    std::string str("string to escape: \n\r\t\"'\x19");
+    char const* quote = "'''";
+
+    client::escaped_string<sink_type> g;
+    if (!karma::generate(sink, g(quote), str))
+    {
+        std::cout << "-------------------------\n";
+        std::cout << "Generating failed\n";
+        std::cout << "-------------------------\n";
+    }
+    else
+    {
+        std::cout << "-------------------------\n";
+        std::cout << "Generated: " << generated << "\n";
+        std::cout << "-------------------------\n";
+    }
+    return 0;
+}