[Boost-commit] svn:boost r57944 - trunk/libs/spirit/example/karma

Subject: [Boost-commit] svn:boost r57944 - trunk/libs/spirit/example/karma
From: hartmut.kaiser_at_[hidden]
Date: 2009-11-26 09:30:56

Author: hkaiser
Date: 2009-11-26 09:30:55 EST (Thu, 26 Nov 2009)
New Revision: 57944
URL: http://svn.boost.org/trac/boost/changeset/57944

Log:
Spirit: added another Karma example
Added:
   trunk/libs/spirit/example/karma/escaped_string.cpp   (contents, props changed)
Text files modified: 
   trunk/libs/spirit/example/karma/Jamfile |     1 +                                       
   1 files changed, 1 insertions(+), 0 deletions(-)

Modified: trunk/libs/spirit/example/karma/Jamfile
==============================================================================
--- trunk/libs/spirit/example/karma/Jamfile	(original)
+++ trunk/libs/spirit/example/karma/Jamfile	2009-11-26 09:30:55 EST (Thu, 26 Nov 2009)
@@ -27,4 +27,5 @@
 exe quick_start1 : quick_start1.cpp ;
 exe karma_reference : reference.cpp ;
 exe karma_reorder_struct : reorder_struct.cpp ;
+exe karma_escaped_string : escaped_string.cpp ;
 

Added: trunk/libs/spirit/example/karma/escaped_string.cpp
==============================================================================
--- (empty file)
+++ trunk/libs/spirit/example/karma/escaped_string.cpp	2009-11-26 09:30:55 EST (Thu, 26 Nov 2009)
@@ -0,0 +1,70 @@
+//  Copyright (c) 2001-2009 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)>
+    {
+        escaped_string()
+          : escaped_string::base_type(esc_str)
+        {
+            esc.add('\a', "\\a")
+                   ('\b', "\\b")
+                   ('\f', "\\f")
+                   ('\n', "\\n")
+                   ('\r', "\\r")
+                   ('\t', "\\t")
+                   ('\v', "\\v")
+                   ('\'', "\\\'")
+                   ('\"', "\\\"")
+                ;
+
+            esc_str =   lit(karma::_r1) 
+                    << *(esc | karma::print | "\\x" << karma::hex) 
+                    <<  lit(karma::_r1)
+                ;
+        }
+
+        karma::rule<OutputIterator, std::string(char)> esc_str;
+        karma::symbols<char, char const*> esc;
+    };
+}
+
+///////////////////////////////////////////////////////////////////////////////
+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 esacpe: \n\r\t\"\'\x19");
+    client::escaped_string<sink_type> g;
+    if (!karma::generate(sink, g('"'), 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;
+}