Merge remote-tracking branch 'origin/master'

bindings/python/mapnik_text_placement.cpp

@@ -40,15 +40,15 @@
 using namespace mapnik;
 
 /* Notes:
-Overriding functions in inherited classes:
+   Overriding functions in inherited classes:
-boost.python documentation doesn't really tell you how to do it.
+   boost.python documentation doesn't really tell you how to do it.
-But this helps:
+   But this helps:
-http://www.gamedev.net/topic/446225-inheritance-in-boostpython/
+   http://www.gamedev.net/topic/446225-inheritance-in-boostpython/
 
-register_ptr_to_python is required for wrapped classes, but not for unwrapped.
+   register_ptr_to_python is required for wrapped classes, but not for unwrapped.
 
-Functions don't have to be members of the class, but can also be
+   Functions don't have to be members of the class, but can also be
-normal functions taking a ref to the class as first parameter.
+   normal functions taking a ref to the class as first parameter.
 */
 
 namespace {

bindings/python/python_optional.hpp

@@ -103,7 +103,7 @@ struct python_optional : public boost::noncopyable
 /** This class works around a bug in boost python.
 
     See http://osdir.com/ml/python.c++/2003-11/msg00158.html
-  */
+*/
 template <typename T, typename X1 = boost::python::detail::not_specified, typename X2 = boost::python::detail::not_specified, typename X3 = boost::python::detail::not_specified>
 class class_with_converter : public boost::python::class_<T, X1, X2, X3>
 {

include/mapnik/boolean.hpp

@@ -0,0 +1,90 @@
+/*****************************************************************************
+ *
+ * This file is part of Mapnik (c++ mapping toolkit)
+ *
+ * Copyright (C) 2011 Artem Pavlenko
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ *****************************************************************************/
+#ifndef MAPNIK_BOOLEAN_HPP
+#define MAPNIK_BOOLEAN_HPP
+#include <istream>
+
+namespace mapnik
+{
+/** Helper for class bool */
+class boolean {
+public:
+    boolean(): b_(false)  {}
+    boolean(bool b) : b_(b) {}
+    boolean(boolean const& b) : b_(b.b_) {}
+
+    operator bool() const
+    {
+        return b_;
+    }
+    boolean & operator = (boolean const& other)
+    {
+        b_ = other.b_;
+        return * this;
+    }
+    boolean & operator = (bool other)
+    {
+        b_ = other;
+        return * this;
+    }
+private:
+    bool b_;
+};
+
+/** Special stream input operator for boolean values */
+template <typename charT, typename traits>
+std::basic_istream<charT, traits> &
+operator >> ( std::basic_istream<charT, traits> & s, boolean & b )
+{
+    std::string word;
+    s >> word;
+    if ( s )
+    {
+        if ( word == "true" || word == "yes" || word == "on" ||
+             word == "1")
+        {
+            b = true;
+        }
+        else if ( word == "false" || word == "no" || word == "off" ||
+                  word == "0")
+        {
+            b = false;
+        }
+        else
+        {
+            s.setstate( std::ios::failbit );
+        }
+    }
+    return s;
+}
+
+template <typename charT, typename traits>
+std::basic_ostream<charT, traits> &
+operator << ( std::basic_ostream<charT, traits> & s, boolean const& b )
+{
+    s << ( b ? "true" : "false" );
+    return s;
+}
+
+}
+
+#endif // MAPNIK_BOOLEAN_HPP

include/mapnik/color.hpp

@@ -137,6 +137,14 @@ public:
     std::string to_hex_string() const;
 };
 
+template <typename charT, typename traits>
+std::basic_ostream<charT, traits> &
+operator << ( std::basic_ostream<charT, traits> & s, mapnik::color const& c )
+{
+    std::string hex_string( c.to_string() );
+    s << hex_string;
+    return s;
+}
 
 }
 

include/mapnik/color_factory.hpp

@@ -25,134 +25,26 @@
 
 // mapnik
 #include <mapnik/config.hpp>
-#include <mapnik/color.hpp>
-#include <mapnik/config_error.hpp>
 
 // boost
 #include <boost/utility.hpp>
-#include <boost/version.hpp>
-
-// boost 1.41 -> 1.44 compatibility, to be removed in mapnik 2.1 (dane)
-#if BOOST_VERSION >= 104500
-#include <mapnik/css_color_grammar.hpp>
 
 namespace mapnik {
 
+class color;
+
+template <typename Iterator> struct css_color_grammar;
 class MAPNIK_DECL color_factory : boost::noncopyable
 {
 public:
 
-    static void init_from_string(color & c, std::string const& css_color)
+    static void init_from_string(color & c, std::string const& css_color);
-    {
-        typedef std::string::const_iterator iterator_type;
-        typedef mapnik::css_color_grammar<iterator_type> css_color_grammar;
-
-        css_color_grammar g;
-        iterator_type first = css_color.begin();
-        iterator_type last =  css_color.end();
-        bool result =
-            boost::spirit::qi::phrase_parse(first,
-                                            last,
-                                            g,
-                                            boost::spirit::ascii::space,
-                                            c);
-        if (!result)
-        {
-            throw config_error(std::string("Failed to parse color value: ") +
-                               "Expected a CSS color, but got '" + css_color + "'");
-        }
-    }
 
     static bool parse_from_string(color & c, std::string const& css_color,
-                                 mapnik::css_color_grammar<std::string::const_iterator> const& g)
+                                  mapnik::css_color_grammar<std::string::const_iterator> const& g);
-    {
-        std::string::const_iterator first = css_color.begin();
-        std::string::const_iterator last =  css_color.end();
-        bool result =
-            boost::spirit::qi::phrase_parse(first,
-                                            last,
-                                            g,
-                                            boost::spirit::ascii::space,
-                                            c);
-        return result && (first == last);
-    }
 
-    static color from_string(std::string const& css_color)
+    static color from_string(std::string const& css_color);
-    {
-        color c;
-        init_from_string(c,css_color);
-        return c;
-    }
 };
 }
 
-#else
-#include <mapnik/css_color_grammar_deprecated.hpp>
-
-namespace mapnik {
-
-class MAPNIK_DECL color_factory : boost::noncopyable
-{
-public:
-
-    static bool parse_from_string(color & c, std::string const& css_color,
-                                 mapnik::css_color_grammar<std::string::const_iterator> const& g)
-    {
-        std::string::const_iterator first = css_color.begin();
-        std::string::const_iterator last =  css_color.end();
-        mapnik::css css_;
-        bool result =
-            boost::spirit::qi::phrase_parse(first,
-                                            last,
-                                            g,
-                                            boost::spirit::ascii::space,
-                                            css_);
-        if (result && (first == last))
-        {
-            c.set_red(css_.r);
-            c.set_green(css_.g);
-            c.set_blue(css_.b);
-            c.set_alpha(css_.a);
-            return true;
-        }
-        return false;
-    }
-
-    static void init_from_string(color & c, std::string const& css_color)
-    {
-        typedef std::string::const_iterator iterator_type;
-        typedef mapnik::css_color_grammar<iterator_type> css_color_grammar;
-
-        css_color_grammar g;
-        iterator_type first = css_color.begin();
-        iterator_type last =  css_color.end();
-        mapnik::css css_;
-        bool result =
-            boost::spirit::qi::phrase_parse(first,
-                                            last,
-                                            g,
-                                            boost::spirit::ascii::space,
-                                            css_);
-        if (!result)
-        {
-            throw config_error(std::string("Failed to parse color value: ") +
-                               "Expected a CSS color, but got '" + css_color + "'");
-        }
-        c.set_red(css_.r);
-        c.set_green(css_.g);
-        c.set_blue(css_.b);
-        c.set_alpha(css_.a);
-    }
-
-    static color from_string(std::string const& css_color)
-    {
-        color c;
-        init_from_string(c,css_color);
-        return c;
-    }
-};
-}
-
-#endif
-
 #endif // MAPNIK_COLOR_FACTORY_HPP

include/mapnik/config_error.hpp

@@ -28,31 +28,28 @@
 
 namespace mapnik {
 
+class xml_node;
 class config_error : public std::exception
 {
 public:
-    config_error():
+    config_error(std::string const& what);
-        what_() {}
+    config_error(std::string const& what, xml_node const& node);
-
+    config_error(std::string const& what, unsigned line_number, std::string const& filename);
-    config_error( std::string const& what ) :
-        what_( what )
-    {
-    }
     virtual ~config_error() throw() {}
 
-    virtual const char * what() const throw()
+    virtual const char * what() const throw();
-    {
-        return what_.c_str();
-    }
-
-    void append_context(std::string const& ctx) const
-    {
-        what_ += " " + ctx;
-    }
 
+    void append_context(const std::string & ctx) const;
+    void append_context(const std::string & ctx, xml_node const& node) const;
+    void append_context(xml_node const& node) const;
 protected:
     mutable std::string what_;
+    mutable unsigned line_number_;
+    mutable std::string file_;
+    mutable std::string node_name_;
+    mutable std::string msg_;
 };
+
 }
 
 #endif // MAPNIK_CONFIG_ERROR_HPP

include/mapnik/expression.hpp

@@ -26,7 +26,6 @@
 // mapnik
 #include <mapnik/config.hpp>
 #include <mapnik/expression_node.hpp>
-#include <mapnik/expression_grammar.hpp>
 
 // stl
 #include <string>
@@ -35,6 +34,7 @@ namespace mapnik
 {
 
 typedef boost::shared_ptr<expr_node> expression_ptr;
+template <typename Iterator> struct expression_grammar;
 
 class expression_factory
 {

include/mapnik/formatting/base.hpp

@@ -36,6 +36,7 @@ namespace mapnik {
 
 typedef std::set<expression_ptr> expression_set;
 class processed_text;
+class xml_node;
 struct char_properties;
 
 namespace formatting {
@@ -48,7 +49,7 @@ class node
 public:
     virtual ~node() {}
     virtual void to_xml(boost::property_tree::ptree &xml) const;
-    static node_ptr from_xml(boost::property_tree::ptree const& xml);
+    static node_ptr from_xml(xml_node const& xml);
     virtual void apply(char_properties const& p, Feature const& feature, processed_text &output) const = 0;
     virtual void add_expressions(expression_set &output) const;
 };

include/mapnik/formatting/expression.hpp

@@ -31,7 +31,7 @@ namespace formatting {
 class expression_format: public node {
 public:
     void to_xml(boost::property_tree::ptree &xml) const;
-    static node_ptr from_xml(boost::property_tree::ptree const& xml);
+    static node_ptr from_xml(xml_node const& xml);
     virtual void apply(char_properties const& p, Feature const& feature, processed_text &output) const;
     virtual void add_expressions(expression_set &output) const;
 
@@ -51,7 +51,7 @@ public:
 
 private:
     node_ptr child_;
-    static expression_ptr get_expression(boost::property_tree::ptree const& xml, std::string name);
+    static expression_ptr get_expression(xml_node const& xml, std::string name);
 };
 } //ns formatting
 } //ns mapnik

include/mapnik/formatting/format.hpp

@@ -31,7 +31,7 @@ namespace formatting {
 class format_node: public node {
 public:
     void to_xml(boost::property_tree::ptree &xml) const;
-    static node_ptr from_xml(boost::property_tree::ptree const& xml);
+    static node_ptr from_xml(xml_node const& xml);
     virtual void apply(char_properties const& p, Feature const& feature, processed_text &output) const;
     virtual void add_expressions(expression_set &output) const;
 

include/mapnik/formatting/registry.hpp

@@ -38,7 +38,7 @@ namespace mapnik
 namespace formatting
 {
 
-typedef node_ptr (*from_xml_function_ptr)(boost::property_tree::ptree const& xml);
+typedef node_ptr (*from_xml_function_ptr)(xml_node const& xml);
 
 class registry : public singleton<registry, CreateStatic>,
                  private boost::noncopyable
@@ -47,7 +47,7 @@ public:
     registry();
     ~registry() {}
     void register_name(std::string name, from_xml_function_ptr ptr, bool overwrite=false);
-    node_ptr from_xml(std::string name, boost::property_tree::ptree const& xml);
+    node_ptr from_xml(xml_node const& xml);
 private:
     std::map<std::string, from_xml_function_ptr> map_;
 };

include/mapnik/formatting/text.hpp

@@ -31,7 +31,7 @@ public:
     text_node(expression_ptr text): node(), text_(text) {}
     text_node(std::string text): node(), text_(parse_expression(text)) {}
     void to_xml(boost::property_tree::ptree &xml) const;
-    static node_ptr from_xml(boost::property_tree::ptree const& xml);
+    static node_ptr from_xml(xml_node const& xml);
     virtual void apply(char_properties const& p, Feature const& feature, processed_text &output) const;
     virtual void add_expressions(expression_set &output) const;
 

include/mapnik/internal/dump_xml.hpp

@@ -1,26 +1,34 @@
 #ifndef DUMP_XML_HPP
 #define DUMP_XML_HPP
-#include <boost/property_tree/ptree.hpp>
+#include <mapnik/xml_node.hpp>
 
 /* Debug dump ptree XML representation.
-*/
+ */
-void dump_xml(boost::property_tree::ptree const& xml, unsigned level=0)
+void dump_xml(xml_node const& xml, unsigned level=0)
 {
     std::string indent;
-    int i;
+    unsigned i;
     for (i=0; i<level; i++)
     {
         indent += "    ";
     }
-    if (xml.data().length()) std::cout << indent << "data: '" << xml.data() << "'\n";
+    xml_node::attribute_map const& attr = xml.get_attributes();
-    boost::property_tree::ptree::const_iterator itr = xml.begin();
+    std::cerr << indent <<"[" << xml.name();
-    boost::property_tree::ptree::const_iterator end = xml.end();
+    xml_node::attribute_map::const_iterator aitr = attr.begin();
+    xml_node::attribute_map::const_iterator aend = attr.end();
+    for (;aitr!=aend; aitr++)
+    {
+        std::cerr << " (" << aitr->first << ", " << aitr->second.value << ", " << aitr->second.processed << ")";
+    }
+    std::cerr << "]" << "\n";
+    if (xml.is_text()) std::cerr << indent << "text: '" << xml.text() << "'\n";
+    xml_node::const_iterator itr = xml.begin();
+    xml_node::const_iterator end = xml.end();
     for (; itr!=end; itr++)
     {
-        std::cout << indent <<"[" << itr->first << "]" << "\n";
+        dump_xml(*itr, level+1);
-        dump_xml(itr->second, level+1);
-        std::cout << indent << "[/" << itr->first << "]" << "\n";
     }
+    std::cerr << indent << "[/" << xml.name() << "]" << "\n";
 }
 
 

include/mapnik/metawriter_factory.hpp

@@ -30,6 +30,7 @@
 #include <boost/property_tree/ptree.hpp>
 
 namespace mapnik {
+class xml_node;
 
 /**
  * Creates a metawriter with the properties specified in the property
@@ -37,7 +38,7 @@ namespace mapnik {
  * metawriters, but should provide an easy point to make them a
  * proper factory method if this is wanted in the future.
  */
-metawriter_ptr metawriter_create(const boost::property_tree::ptree &pt);
+metawriter_ptr metawriter_create(xml_node const& pt);
 
 /**
  * Writes properties into the given property tree representing the

include/mapnik/palette.hpp

@@ -26,7 +26,6 @@
 // mapnik
 #include <mapnik/config.hpp>
 #include <mapnik/global.hpp>
-#include <mapnik/config_error.hpp>
 
 // boost
 #include <boost/utility.hpp>

include/mapnik/ptree_helpers.hpp

@@ -23,450 +23,17 @@
 #ifndef MAPNIK_PTREE_HELPERS_HPP
 #define MAPNIK_PTREE_HELPERS_HPP
 
-// mapnik
-#include <mapnik/enumeration.hpp>
-#include <mapnik/config_error.hpp>
-#include <mapnik/color_factory.hpp>
-#include <mapnik/util/conversions.hpp>
 // boost
 #include <boost/property_tree/ptree.hpp>
-#include <boost/optional.hpp>
-#include <boost/lexical_cast.hpp>
-
-// stl
-#include <iostream>
-#include <sstream>
 
 namespace mapnik {
 
-template <typename T>
-inline boost::optional<T> fast_cast(std::string const& value);
-
-template <typename T>
-T get(boost::property_tree::ptree const& node, std::string const& name, bool is_attribute,
-      T const& default_value);
-template <typename T>
-T get(boost::property_tree::ptree const& node, std::string const& name, bool is_attribute);
-template <typename T>
-T get_value(boost::property_tree::ptree const& node, std::string const& name);
-template <typename T>
-boost::optional<T> get_optional(boost::property_tree::ptree const& node, std::string const& name,
-                                bool is_attribute);
-
-template <typename T>
-boost::optional<T> get_opt_attr( boost::property_tree::ptree const& node,
-                                 std::string const& name)
-{
-    return get_optional<T>( node, name, true);
-}
-
-template <typename T>
-boost::optional<T> get_opt_child( boost::property_tree::ptree const& node,
-                                  std::string const& name)
-{
-    return get_optional<T>( node, name, false);
-}
-
-template <typename T>
-T get_attr( boost::property_tree::ptree const& node, std::string const& name,
-            T const& default_value )
-{
-    return get<T>( node, name, true, default_value);
-}
-
-template <typename T>
-T get_attr( boost::property_tree::ptree const& node, std::string const& name )
-{
-    return get<T>( node, name, true );
-}
-
-
-template <typename charT, typename traits>
-std::basic_ostream<charT, traits> &
-operator << ( std::basic_ostream<charT, traits> & s, mapnik::color const& c )
-{
-    std::string hex_string( c.to_string() );
-    s << hex_string;
-    return s;
-}
-
-/** Helper for class bool */
-class boolean {
-public:
-    boolean() : b_(false) {}
-    boolean(bool b) : b_(b) {}
-    boolean(boolean const& b) : b_(b.b_) {}
-
-    operator bool() const
-    {
-        return b_;
-    }
-    boolean & operator = (boolean const& other)
-    {
-        b_ = other.b_;
-        return * this;
-    }
-    boolean & operator = (bool other)
-    {
-        b_ = other;
-        return * this;
-    }
-private:
-    bool b_;
-};
-
-/** Special stream input operator for boolean values */
-template <typename charT, typename traits>
-std::basic_istream<charT, traits> &
-operator >> ( std::basic_istream<charT, traits> & s, boolean & b )
-{
-    std::string word;
-    s >> word;
-    if ( s )
-    {
-        if ( word == "true" || word == "yes" || word == "on" ||
-             word == "1")
-        {
-            b = true;
-        }
-        else if ( word == "false" || word == "no" || word == "off" ||
-                  word == "0")
-        {
-            b = false;
-        }
-        else
-        {
-            s.setstate( std::ios::failbit );
-        }
-    }
-    return s;
-}
-
-template <typename charT, typename traits>
-std::basic_ostream<charT, traits> &
-operator << ( std::basic_ostream<charT, traits> & s, boolean const& b )
-{
-    s << ( b ? "true" : "false" );
-    return s;
-}
-
 template <typename T>
 void set_attr(boost::property_tree::ptree & pt, std::string const& name, T const& v)
 {
     pt.put("<xmlattr>." + name, v);
 }
 
-
-class boolean;
-
-template <typename T>
-struct name_trait
-{
-    static std::string name()
-    {
-        return "<unknown>";
-    }
-    // missing name_trait for type ...
-    // if you get here you are probably using a new type
-    // in the XML file. Just add a name trait for the new
-    // type below.
-    BOOST_STATIC_ASSERT( sizeof(T) == 0 );
-};
-
-#define DEFINE_NAME_TRAIT( type, type_name )                  \
-    template <>                                                         \
-    struct name_trait<type>                                             \
-    {                                                                   \
-        static std::string name() { return std::string("type ") + type_name; } \
-    };
-
-
-DEFINE_NAME_TRAIT( double, "double")
-DEFINE_NAME_TRAIT( float, "float")
-DEFINE_NAME_TRAIT( unsigned, "unsigned")
-DEFINE_NAME_TRAIT( boolean, "boolean")
-DEFINE_NAME_TRAIT( int, "integer" )
-DEFINE_NAME_TRAIT( std::string, "string" )
-DEFINE_NAME_TRAIT( color, "color" )
-
-template <typename ENUM, int MAX>
-struct name_trait< mapnik::enumeration<ENUM, MAX> >
-{
-    typedef enumeration<ENUM, MAX> Enum;
-
-    static std::string name()
-    {
-        std::string value_list("one of [");
-        for (unsigned i = 0; i < Enum::MAX; ++i)
-        {
-            value_list += Enum::get_string( i );
-            if ( i + 1 < Enum::MAX ) value_list += ", ";
-        }
-        value_list += "]";
-
-        return value_list;
-    }
-};
-
-template <typename T>
-inline boost::optional<T> fast_cast(std::string const& value)
-{
-    try
-    {
-        return boost::lexical_cast<T>( value );
-    }
-    catch (boost::bad_lexical_cast const& ex)
-    {
-        return boost::optional<T>();
-    }
-
-}
-
-template <>
-inline boost::optional<int> fast_cast(std::string const& value)
-{
-    int result;
-    if (mapnik::conversions::string2int(value,result))
-        return boost::optional<int>(result);
-    return boost::optional<int>();
-}
-
-template <>
-inline boost::optional<double> fast_cast(std::string const& value)
-{
-    double result;
-    if (mapnik::conversions::string2double(value,result))
-        return boost::optional<double>(result);
-    return boost::optional<double>();
-}
-
-template <>
-inline boost::optional<float> fast_cast(std::string const& value)
-{
-    float result;
-    if (mapnik::conversions::string2float(value,result))
-        return boost::optional<float>(result);
-    return boost::optional<float>();
-}
-
-template <typename T>
-T get(boost::property_tree::ptree const& node,
-      std::string const& name,
-      bool is_attribute,
-      T const& default_value)
-{
-    boost::optional<std::string> str;
-    if (is_attribute)
-    {
-        str = node.get_optional<std::string>( std::string("<xmlattr>.") + name );
-    }
-    else
-    {
-        str = node.get_optional<std::string>(name + ".<xmltext>");
-    }
-
-    if ( str )
-    {
-        boost::optional<T> result = fast_cast<T>(*str);
-        if (result)
-        {
-            return *result;
-        }
-        else
-        {
-            throw config_error(std::string("Failed to parse ") +
-                               (is_attribute ? "attribute" : "child node") + " '" +
-                               name + "'. Expected " + name_trait<T>::name() +
-                               " but got '" + *str + "'");
-        }
-    }
-    else
-    {
-        return default_value;
-    }
-}
-
-template <>
-inline color get(boost::property_tree::ptree const& node,
-                 std::string const& name,
-                 bool is_attribute,
-                 color const& default_value)
-{
-    boost::optional<std::string> str;
-    if (is_attribute)
-    {
-        str = node.get_optional<std::string>( std::string("<xmlattr>.") + name );
-    }
-    else
-    {
-        str = node.get_optional<std::string>(name + ".<xmltext>");
-    }
-
-    if ( str )
-    {
-        try
-        {
-            return mapnik::color_factory::from_string((*str).c_str());
-        }
-        catch (...)
-        {
-            throw config_error(std::string("Failed to parse ") +
-                               (is_attribute ? "attribute" : "child node") + " '" +
-                               name + "'. Expected " + name_trait<color>::name() +
-                               " but got '" + *str + "'");
-        }
-    }
-    else
-    {
-        return default_value;
-    }
-}
-
-template <typename T>
-T get(boost::property_tree::ptree const& node, std::string const& name, bool is_attribute)
-{
-    boost::optional<std::string> str;
-    if (is_attribute)
-    {
-        str = node.get_optional<std::string>( std::string("<xmlattr>.") + name);
-    }
-    else
-    {
-        str = node.get_optional<std::string>(name + ".<xmltext>");
-    }
-
-    if ( ! str )
-    {
-        throw config_error(std::string("Required ") +
-                           (is_attribute ? "attribute " : "child node ") +
-                           "'" + name + "' is missing");
-    }
-    boost::optional<T> result = fast_cast<T>(*str);
-    if (result)
-    {
-        return *result;
-    }
-    else
-    {
-        throw config_error(std::string("Failed to parse ") +
-                           (is_attribute ? "attribute" : "child node") + " '" +
-                           name + "'. Expected " + name_trait<T>::name() +
-                           " but got '" + *str + "'");
-    }
-}
-
-template <typename T>
-T get_value(boost::property_tree::ptree const& node, std::string const& name)
-{
-    try
-    {
-        /* NOTE: get_child works as long as there is only one child with that name.
-           If this function is used this used this condition must always be satisfied.
-        */
-        return node.get_child("<xmltext>").get_value<T>();
-    }
-    catch (boost::property_tree::ptree_bad_path)
-    {
-        /* If the XML parser did not find any non-empty data element the is no
-           <xmltext> node. But we don't want to fail here but simply return a
-           default constructed value of the requested type.
-        */
-        return T();
-    }
-    catch (...)
-    {
-        throw config_error(std::string("Failed to parse ") +
-                           name + ". Expected " + name_trait<T>::name() +
-                           " but got '" + node.data() + "'");
-    }
-}
-
-template <typename T>
-boost::optional<T> get_optional(boost::property_tree::ptree const& node,
-                                                 std::string const& name,
-                                                 bool is_attribute)
-{
-    boost::optional<std::string> str;
-    if (is_attribute)
-    {
-        str = node.get_optional<std::string>( std::string("<xmlattr>.") + name);
-    }
-    else
-    {
-        str = node.get_optional<std::string>(name + ".<xmltext>");
-    }
-
-    boost::optional<T> result;
-    if ( str )
-    {
-        result = fast_cast<T>(*str);
-        if (!result)
-        {
-            throw config_error(std::string("Failed to parse ") +
-                               (is_attribute ? "attribute" : "child node") + " '" +
-                               name + "'. Expected " + name_trait<T>::name() +
-                               " but got '" + *str + "'");
-        }
-    }
-
-    return result;
-}
-
-template <>
-inline boost::optional<std::string> get_optional(boost::property_tree::ptree const& node,
-                                                 std::string const& name,
-                                                 bool is_attribute)
-{
-    if (is_attribute)
-    {
-        return node.get_optional<std::string>( std::string("<xmlattr>.") + name);
-    }
-    else
-    {
-        return node.get_optional<std::string>(name + ".<xmltext>");
-    }
-}
-
-template <>
-inline boost::optional<color> get_optional(boost::property_tree::ptree const& node,
-                                                 std::string const& name,
-                                                 bool is_attribute)
-{
-    boost::optional<std::string> str;
-    if (is_attribute)
-    {
-        str = node.get_optional<std::string>( std::string("<xmlattr>.") + name);
-    }
-    else
-    {
-        str = node.get_optional<std::string>(name + ".<xmltext>");
-    }
-
-    boost::optional<color> result;
-    if ( str )
-    {
-        try
-        {
-            result = mapnik::color_factory::from_string((*str).c_str());
-        }
-        catch (...)
-        {
-            throw config_error(std::string("Failed to parse ") +
-                               (is_attribute ? "attribute" : "child node") + " '" +
-                               name + "'. Expected " + name_trait<color>::name() +
-                               " but got '" + *str + "'");
-        }
-    }
-
-    return result;
-}
-
-static inline bool has_child(boost::property_tree::ptree const& node, std::string const& name)
-{
-    boost::optional<std::string> str = node.get_optional<std::string>(name);
-    return str;
-}
-
 } // end of namespace mapnik
 
 #endif // MAPNIK_PTREE_HELPERS_HPP

include/mapnik/raster_colorizer.hpp

@@ -39,7 +39,6 @@
 
 // mapnik
 #include <mapnik/config.hpp>
-#include <mapnik/config_error.hpp>
 #include <mapnik/color.hpp>
 #include <mapnik/feature.hpp>
 #include <mapnik/enumeration.hpp>

include/mapnik/symbolizer_helpers.hpp

@@ -65,11 +65,11 @@ public:
           detector_(detector),
           writer_(sym.get_metawriter()),
           dims_(0, 0, width, height),
+          query_extent_(query_extent),
           text_(font_manager, scale_factor),
           angle_(0.0),
           placement_valid_(false),
           points_on_line_(false),
-          query_extent_(query_extent),
           finder_()
     {
         initialize_geometries();

include/mapnik/text_placements/list.hpp

@@ -38,7 +38,7 @@ public:
     text_symbolizer_properties & add();
     text_symbolizer_properties & get(unsigned i);
     unsigned size() const;
-    static text_placements_ptr from_xml(boost::property_tree::ptree const &xml, fontset_map const & fontsets);
+    static text_placements_ptr from_xml(xml_node const &xml, fontset_map const & fontsets);
 private:
     std::vector<text_symbolizer_properties> list_;
     friend class text_placement_info_list;

include/mapnik/text_placements/registry.hpp

@@ -39,7 +39,7 @@ namespace placements
 {
 
 typedef text_placements_ptr (*from_xml_function_ptr)(
-    boost::property_tree::ptree const& xml, fontset_map const & fontsets);
+    xml_node const& xml, fontset_map const & fontsets);
 
 class registry : public singleton<registry, CreateStatic>,
                  private boost::noncopyable
@@ -49,7 +49,7 @@ public:
     ~registry() {}
     void register_name(std::string name, from_xml_function_ptr ptr, bool overwrite=false);
     text_placements_ptr from_xml(std::string name,
-                                 boost::property_tree::ptree const& xml,
+                                 xml_node const& xml,
                                  fontset_map const & fontsets);
 private:
     std::map<std::string, from_xml_function_ptr> map_;

include/mapnik/text_placements/simple.hpp

@@ -52,7 +52,7 @@ public:
     text_placement_info_ptr get_placement_info(double scale_factor) const;
     void set_positions(std::string positions);
     std::string get_positions();
-    static text_placements_ptr from_xml(boost::property_tree::ptree const &xml, fontset_map const & fontsets);
+    static text_placements_ptr from_xml(xml_node const &xml, fontset_map const & fontsets);
 private:
     std::string positions_;
     std::vector<directions_t> direction_;

include/mapnik/text_properties.hpp

@@ -54,7 +54,7 @@ struct char_properties
 {
     char_properties();
     /** Construct object from XML. */
-    void from_xml(boost::property_tree::ptree const &sym, fontset_map const & fontsets);
+    void from_xml(xml_node const &sym, fontset_map const & fontsets);
     /** Write object to XML ptree. */
     void to_xml(boost::property_tree::ptree &node, bool explicit_defaults, char_properties const& dfl=char_properties()) const;
     std::string face_name;
@@ -124,7 +124,7 @@ struct text_symbolizer_properties
 {
     text_symbolizer_properties();
     /** Load all values from XML ptree. */
-    void from_xml(boost::property_tree::ptree const &sym, fontset_map const & fontsets);
+    void from_xml(xml_node const &sym, fontset_map const & fontsets);
     /** Save all values to XML ptree (but does not create a new parent node!). */
     void to_xml(boost::property_tree::ptree &node, bool explicit_defaults, text_symbolizer_properties const &dfl=text_symbolizer_properties()) const;
 

include/mapnik/util/conversions.hpp

@@ -30,16 +30,16 @@
 
 namespace mapnik { namespace conversions {
 
-bool string2int(const char * value, int & result);
+    bool string2int(const char * value, int & result);
-bool string2int(std::string const& value, int & result);
+    bool string2int(std::string const& value, int & result);
 
-bool string2double(std::string const& value, double & result);
+    bool string2double(std::string const& value, double & result);
-bool string2double(const char * value, double & result);
+    bool string2double(const char * value, double & result);
 
-bool string2float(std::string const& value, float & result);
+    bool string2float(std::string const& value, float & result);
-bool string2float(const char * value, float & result);
+    bool string2float(const char * value, float & result);
 
-}
+    }
 }
 
 #endif // MAPNIK_CONVERSIONS_UTIL_HPP

include/mapnik/value.hpp

@@ -26,7 +26,6 @@
 // mapnik
 #include <mapnik/global.hpp>
 #include <mapnik/unicode.hpp>
-#include <mapnik/config_error.hpp>
 
 // boost
 #include <boost/variant.hpp>

include/mapnik/xml_loader.hpp

@@ -23,16 +23,14 @@
 #ifndef MAPNIK_LIBXML2_LOADER_HPP
 #define MAPNIK_LIBXML2_LOADER_HPP
 
-// boost
-#include <boost/property_tree/ptree.hpp>
-
 // stl
 #include <string>
 
 namespace mapnik
 {
-void read_xml2( std::string const & filename, boost::property_tree::ptree & pt);
+class xml_node;
-void read_xml2_string( std::string const & str, boost::property_tree::ptree & pt, std::string const & base_path="");
+void read_xml(std::string const & filename, xml_node &node);
+void read_xml_string(std::string const & str, xml_node &node, std::string const & base_path="");
 }
 
 #endif // MAPNIK_LIBXML2_LOADER_HPP

include/mapnik/xml_node.hpp

@@ -0,0 +1,137 @@
+/*****************************************************************************
+ *
+ * This file is part of Mapnik (c++ mapping toolkit)
+ *
+ * Copyright (C) 2012 Artem Pavlenko
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ *****************************************************************************/
+
+#ifndef MAPNIK_XML_NODE_H
+#define MAPNIK_XML_NODE_H
+
+//mapnik
+#include <mapnik/boolean.hpp>
+
+
+//boost
+#include <boost/optional.hpp>
+
+//stl
+#include <list>
+#include <string>
+#include <map>
+#include <exception>
+
+namespace mapnik
+{
+class xml_tree;
+
+class xml_attribute
+{
+public:
+    xml_attribute(std::string const& value);
+    std::string value;
+    mutable bool processed;
+};
+
+class node_not_found: public std::exception
+{
+public:
+    node_not_found(std::string node_name);
+    virtual const char* what() const throw();
+    ~node_not_found() throw ();
+private:
+    std::string node_name_;
+};
+
+class attribute_not_found: public std::exception
+{
+public:
+    attribute_not_found(std::string const& node_name, std::string const& attribute_name);
+    virtual const char* what() const throw();
+    ~attribute_not_found() throw ();
+private:
+    std::string node_name_;
+    std::string attribute_name_;
+};
+
+class more_than_one_child: public std::exception
+{
+public:
+    more_than_one_child(std::string const& node_name);
+    virtual const char* what() const throw();
+    ~more_than_one_child() throw ();
+private:
+    std::string node_name_;
+};
+
+class xml_node
+{
+public:
+    typedef std::list<xml_node>::const_iterator const_iterator;
+    typedef std::map<std::string, xml_attribute> attribute_map;
+    xml_node(xml_tree &tree, std::string name, unsigned line=0, bool text_node = false);
+
+    std::string const& name() const;
+    std::string const& text() const;
+    std::string const& filename() const;
+    bool is_text() const;
+    bool is(std::string const& name) const;
+
+    xml_node &add_child(std::string const& name, unsigned line=0, bool text_node = false);
+    void add_attribute(std::string const& name, std::string const& value);
+    attribute_map const& get_attributes() const;
+
+    bool processed() const;
+    void set_processed(bool processed) const;
+
+    unsigned line() const;
+
+    const_iterator begin() const;
+    const_iterator end() const;
+
+    xml_node & get_child(std::string const& name);
+    xml_node const& get_child(std::string const& name) const;
+    xml_node const* get_opt_child(std::string const& name) const;
+    bool has_child(std::string const& name) const;
+
+    template <typename T>
+    boost::optional<T> get_opt_attr(std::string const& name) const;
+
+    template <typename T>
+    T get_attr(std::string const& name, T const& default_value) const;
+    template <typename T>
+    T get_attr(std::string const& name) const;
+
+    std::string get_text() const;
+
+    template <typename T>
+    T get_value() const;
+private:
+    xml_tree &tree_;
+    std::string name_;
+    std::list<xml_node> children_;
+    attribute_map attributes_;
+    bool text_node_;
+    unsigned line_;
+    mutable bool processed_;
+    static std::string xml_text;
+};
+
+} //ns mapnik
+
+#endif // MAPNIK_XML_NODE_H

include/mapnik/xml_tree.hpp

@@ -0,0 +1,54 @@
+/*****************************************************************************
+ *
+ * This file is part of Mapnik (c++ mapping toolkit)
+ *
+ * Copyright (C) 2012 Artem Pavlenko
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ *****************************************************************************/
+
+#ifndef MAPNIK_XML_TREE_H
+#define MAPNIK_XML_TREE_H
+//mapnik
+#include <mapnik/xml_node.hpp>
+#include <mapnik/expression_grammar.hpp>
+#include <mapnik/css_color_grammar.hpp>
+
+//stl
+#include <string>
+
+
+namespace mapnik
+{
+class xml_tree
+{
+public:
+    xml_tree(std::string const& encoding="utf8");
+    void set_filename(std::string fn);
+    std::string const& filename() const;
+    xml_node &root();
+private:
+    xml_node node_;
+    std::string file_;
+    transcoder tr_;
+public:
+    mapnik::css_color_grammar<std::string::const_iterator> color_grammar;
+    mapnik::expression_grammar<std::string::const_iterator> expr_grammar;
+};
+
+} //ns mapnik
+
+#endif // MAPNIK_XML_TREE_H

plugins/input/csv/csv_datasource.cpp

@@ -6,6 +6,7 @@
 #include <boost/lexical_cast.hpp>
 #include <boost/algorithm/string.hpp>
 #include <boost/spirit/include/qi.hpp>
+#include <boost/spirit/include/phoenix_operator.hpp>
 
 // mapnik
 #include <mapnik/feature_layer_desc.hpp>
@@ -14,7 +15,7 @@
 #include <mapnik/memory_featureset.hpp>
 #include <mapnik/wkt/wkt_factory.hpp>
 #include <mapnik/util/geometry_to_ds_type.hpp>
-#include <mapnik/ptree_helpers.hpp>  // mapnik::boolean
+#include <mapnik/boolean.hpp>
 
 // stl
 #include <sstream>

plugins/input/gdal/gdal_datasource.cpp

@@ -25,7 +25,7 @@
 #include "gdal_featureset.hpp"
 
 // mapnik
-#include <mapnik/ptree_helpers.hpp>
+#include <mapnik/boolean.hpp>
 #include <mapnik/geom_util.hpp>
 
 #include <gdal_version.h>

plugins/input/geos/geos_datasource.cpp

@@ -30,7 +30,7 @@
 #include <cstdarg>
 
 // mapnik
-#include <mapnik/ptree_helpers.hpp>
+#include <mapnik/boolean.hpp>
 #include <mapnik/geom_util.hpp>
 
 // boost

plugins/input/kismet/kismet_datasource.cpp

@@ -33,7 +33,7 @@
 #include <cstdio>
 
 // mapnik
-#include <mapnik/ptree_helpers.hpp>
+#include <mapnik/boolean.hpp>
 
 // boost
 #include <boost/algorithm/string.hpp>

plugins/input/occi/occi_datasource.cpp

@@ -25,7 +25,7 @@
 #include "occi_featureset.hpp"
 
 // mapnik
-#include <mapnik/ptree_helpers.hpp>
+#include <mapnik/boolean.hpp>
 #include <mapnik/sql_utils.hpp>
 
 // boost

plugins/input/ogr/ogr_datasource.cpp

@@ -33,7 +33,7 @@
 #include <gdal_version.h>
 
 // mapnik
-#include <mapnik/ptree_helpers.hpp>
+#include <mapnik/boolean.hpp>
 #include <mapnik/geom_util.hpp>
 
 // boost

plugins/input/postgis/postgis_datasource.cpp

@@ -26,7 +26,7 @@
 
 // mapnik
 #include <mapnik/global.hpp>
-#include <mapnik/ptree_helpers.hpp>
+#include <mapnik/boolean.hpp>
 #include <mapnik/sql_utils.hpp>
 #include <mapnik/util/conversions.hpp>
 

plugins/input/rasterlite/rasterlite_datasource.cpp

@@ -29,7 +29,7 @@
 #include <boost/make_shared.hpp>
 
 // mapnik
-#include <mapnik/ptree_helpers.hpp>
+#include <mapnik/boolean.hpp>
 #include <mapnik/geom_util.hpp>
 
 using mapnik::datasource;

plugins/input/sqlite/sqlite_datasource.cpp

@@ -26,7 +26,7 @@
 #include "sqlite_utils.hpp"
 
 // mapnik
-#include <mapnik/ptree_helpers.hpp>
+#include <mapnik/boolean.hpp>
 #include <mapnik/sql_utils.hpp>
 #include <mapnik/util/geometry_to_ds_type.hpp>
 #include <mapnik/wkb.hpp>

src/agg/agg_renderer.cpp

@@ -27,7 +27,6 @@
 #include <mapnik/marker.hpp>
 #include <mapnik/marker_cache.hpp>
 #include <mapnik/unicode.hpp>
-#include <mapnik/config_error.hpp>
 #include <mapnik/font_set.hpp>
 #include <mapnik/parse_path.hpp>
 #include <mapnik/map.hpp>

src/build.py

@@ -178,6 +178,8 @@ source = Split(
     text_placements/list.cpp
     text_placements/simple.cpp
     text_properties.cpp
+    xml_tree.cpp
+    config_error.cpp
     """   
     )
 
@@ -299,7 +301,7 @@ if env['XMLPARSER'] == 'libxml2' and env['HAS_LIBXML2']:
     env2 = lib_env.Clone()
     env2.Append(CXXFLAGS = '-DHAVE_LIBXML2')
     libmapnik_cxxflags.append('-DHAVE_LIBXML2')
-    fixup = ['load_map.cpp','libxml2_loader.cpp']
+    fixup = ['libxml2_loader.cpp']
     for cpp in fixup:
         if cpp in source:
             source.remove(cpp)
@@ -307,6 +309,12 @@ if env['XMLPARSER'] == 'libxml2' and env['HAS_LIBXML2']:
             source.insert(0,env2.StaticObject(cpp))
         else:
             source.insert(0,env2.SharedObject(cpp))
+else:
+    source += Split(
+        """
+        rapidxml_loader.cpp
+        """
+    )
 
 if env['CUSTOM_LDFLAGS']:
     linkflags = '%s %s' % (env['CUSTOM_LDFLAGS'], mapnik_lib_link_flag)

src/cairo_renderer.cpp

@@ -29,7 +29,6 @@
 #include <mapnik/unicode.hpp>
 #include <mapnik/markers_placement.hpp>
 #include <mapnik/arrow.hpp>
-#include <mapnik/config_error.hpp>
 #include <mapnik/parse_path.hpp>
 #include <mapnik/marker.hpp>
 #include <mapnik/marker_cache.hpp>

src/color.cpp

@@ -25,11 +25,23 @@
 // mapnik
 #include <mapnik/color.hpp>
 #include <mapnik/color_factory.hpp>
+#include <mapnik/config_error.hpp>
+
 // boost
 #include <boost/format.hpp>
+#include <boost/version.hpp>
+
 // stl
 #include <sstream>
 
+// boost 1.41 -> 1.44 compatibility, to be removed in mapnik 2.1 (dane)
+#if BOOST_VERSION >= 104500
+#include <mapnik/css_color_grammar.hpp>
+#else
+#include <mapnik/css_color_grammar_deprecated.hpp>
+#endif
+
+
 namespace mapnik {
 
 color::color( std::string const& css_string)
@@ -81,5 +93,89 @@ std::string color::to_hex_string() const
     }
 }
 
+
+/****************************************************************************/
+void color_factory::init_from_string(color & c, std::string const& css_color)
+{
+    typedef std::string::const_iterator iterator_type;
+    typedef mapnik::css_color_grammar<iterator_type> css_color_grammar;
+
+    css_color_grammar g;
+    iterator_type first = css_color.begin();
+    iterator_type last =  css_color.end();
+    // boost 1.41 -> 1.44 compatibility, to be removed in mapnik 2.1 (dane)
+#if BOOST_VERSION >= 104500
+    bool result =
+        boost::spirit::qi::phrase_parse(first,
+                                        last,
+                                        g,
+                                        boost::spirit::ascii::space,
+                                        c);
+    if (!result)
+    {
+        throw config_error(std::string("Failed to parse color value: ") +
+                           "Expected a CSS color, but got '" + css_color + "'");
+    }
+#else
+    mapnik::css css_;
+    bool result =
+        boost::spirit::qi::phrase_parse(first,
+                                        last,
+                                        g,
+                                        boost::spirit::ascii::space,
+                                        css_);
+    if (!result)
+    {
+        throw config_error(std::string("Failed to parse color value: ") +
+                           "Expected a CSS color, but got '" + css_color + "'");
+    }
+    c.set_red(css_.r);
+    c.set_green(css_.g);
+    c.set_blue(css_.b);
+    c.set_alpha(css_.a);
+#endif
+}
+
+bool color_factory::parse_from_string(color & c, std::string const& css_color,
+                                      mapnik::css_color_grammar<std::string::const_iterator> const& g)
+{
+    std::string::const_iterator first = css_color.begin();
+    std::string::const_iterator last =  css_color.end();
+    // boost 1.41 -> 1.44 compatibility, to be removed in mapnik 2.1 (dane)
+#if BOOST_VERSION >= 104500
+    bool result =
+        boost::spirit::qi::phrase_parse(first,
+                                        last,
+                                        g,
+                                        boost::spirit::ascii::space,
+                                        c);
+    return result && (first == last);
+#else
+    mapnik::css css_;
+    bool result =
+        boost::spirit::qi::phrase_parse(first,
+                                        last,
+                                        g,
+                                        boost::spirit::ascii::space,
+                                        css_);
+    if (result && (first == last))
+    {
+        c.set_red(css_.r);
+        c.set_green(css_.g);
+        c.set_blue(css_.b);
+        c.set_alpha(css_.a);
+        return true;
+    }
+#endif
+}
+
+
+color color_factory::from_string(std::string const& css_color)
+{
+    color c;
+    init_from_string(c, css_color);
+    return c;
+}
+
 }
 

src/config_error.cpp

@@ -0,0 +1,55 @@
+#include <mapnik/config_error.hpp>
+#include <mapnik/xml_tree.hpp>
+
+namespace mapnik
+{
+
+config_error::config_error(std::string const& what)
+    : what_(what), line_number_(0), file_(), node_name_(), msg_()
+{
+}
+
+
+config_error::config_error(std::string const& what, xml_node const& node)
+    : what_(what), line_number_(node.line()), file_(node.filename()), node_name_(node.name()), msg_()
+{
+}
+
+
+config_error::config_error(std::string const& what, unsigned line_number, std::string const& filename)
+    : what_(what), line_number_(line_number), file_(filename), node_name_(), msg_()
+{
+
+}
+
+char const* config_error::what() const throw()
+{
+    std::stringstream s;
+    s << file_;
+    if (line_number_ > 0) s << " line " << line_number_;
+    if (!node_name_.empty()) s << " in node "<< node_name_;
+    if (line_number_ > 0 || !file_.empty()) s << ": ";
+    s << what_;
+    msg_ = s.str(); //Avoid returning pointer to dead object
+    return msg_.c_str();
+}
+
+void config_error::append_context(std::string const& ctx) const
+{
+    what_ += " " + ctx;
+}
+
+void config_error::append_context(std::string const& ctx, xml_node const& node) const
+{
+    append_context(ctx);
+    append_context(node);
+}
+
+void config_error::append_context(xml_node const& node) const
+{
+    if (!line_number_) line_number_ = node.line();
+    if (node_name_.empty()) node_name_ = node.name();
+    if (file_.empty()) file_ = node.filename();
+}
+
+}

src/conversions.cpp

@@ -35,9 +35,9 @@ namespace mapnik { namespace conversions {
 
 using namespace boost::spirit;
 
-BOOST_SPIRIT_AUTO(qi, INTEGER, qi::int_);
+BOOST_SPIRIT_AUTO(qi, INTEGER, qi::int_)
-BOOST_SPIRIT_AUTO(qi, FLOAT, qi::float_);
+BOOST_SPIRIT_AUTO(qi, FLOAT, qi::float_)
-BOOST_SPIRIT_AUTO(qi, DOUBLE, qi::double_);
+BOOST_SPIRIT_AUTO(qi, DOUBLE, qi::double_)
 
 bool string2int(const char * value, int & result)
 {

src/expression.cpp

@@ -24,6 +24,7 @@
 #include <mapnik/expression.hpp>
 #include <mapnik/config_error.hpp>
 #include <mapnik/unicode.hpp>
+#include <mapnik/expression_grammar.hpp>
 
 // boost
 #include <boost/algorithm/string.hpp>

src/formatting/base.cpp

@@ -23,6 +23,7 @@
 #include <mapnik/formatting/base.hpp>
 #include <mapnik/formatting/list.hpp>
 #include <mapnik/formatting/registry.hpp>
+#include <mapnik/xml_node.hpp>
 
 // boost
 #include <boost/property_tree/ptree.hpp>
@@ -38,18 +39,18 @@ void node::to_xml(boost::property_tree::ptree &xml) const
 #endif
 }
 
-node_ptr node::from_xml(boost::property_tree::ptree const& xml)
+node_ptr node::from_xml(xml_node const& xml)
 {
     list_node *list = new list_node();
     node_ptr list_ptr(list);
-    boost::property_tree::ptree::const_iterator itr = xml.begin();
+    xml_node::const_iterator itr = xml.begin();
-    boost::property_tree::ptree::const_iterator end = xml.end();
+    xml_node::const_iterator end = xml.end();
     for (; itr != end; ++itr) {
-        if (itr->first == "<xmlcomment>" || itr->first == "<xmlattr>" || itr->first == "Placement")
+        if (itr->name() == "Placement")
         {
             continue;
         }
-        node_ptr n = registry::instance()->from_xml(itr->first, itr->second);
+        node_ptr n = registry::instance()->from_xml(*itr);
         if (n) list->push_back(n);
     }
     if (list->get_children().size() == 1) {

src/formatting/expression.cpp

@@ -27,6 +27,7 @@
 #include <mapnik/expression_evaluator.hpp>
 #include <mapnik/text_properties.hpp>
 #include <mapnik/feature.hpp>
+#include <mapnik/xml_node.hpp>
 
 // boost
 
@@ -37,7 +38,7 @@ namespace formatting
 using boost::property_tree::ptree;
 void expression_format::to_xml(boost::property_tree::ptree &xml) const
 {
-    ptree &new_node = xml.push_back(ptree::value_type("Format", ptree()))->second;
+    ptree &new_node = xml.push_back(ptree::value_type("ExpressionFormat", ptree()))->second;
     if (face_name) set_attr(new_node, "face-name", to_expression_string(*face_name));
     if (text_size) set_attr(new_node, "size", to_expression_string(*text_size));
     if (character_spacing) set_attr(new_node, "character-spacing", to_expression_string*character_spacing);
@@ -51,7 +52,7 @@ void expression_format::to_xml(boost::property_tree::ptree &xml) const
     if (child_) child_->to_xml(new_node);
 }
 
-node_ptr expression_format::from_xml(ptree const& xml)
+node_ptr expression_format::from_xml(xml_node const& xml)
 {
     expression_format *n = new expression_format();
     node_ptr np(n);
@@ -72,9 +73,9 @@ node_ptr expression_format::from_xml(ptree const& xml)
     return np;
 }
 
-expression_ptr expression_format::get_expression(ptree const& xml, std::string name)
+expression_ptr expression_format::get_expression(xml_node const& xml, std::string name)
 {
-    boost::optional<std::string> tmp = get_opt_attr<std::string>(xml, name);
+    boost::optional<std::string> tmp = xml.get_opt_attr<std::string>(name);
     if (tmp) return parse_expression(*tmp);
     return expression_ptr();
 }

src/formatting/format.cpp

@@ -21,6 +21,7 @@
  *****************************************************************************/
 #include <mapnik/formatting/format.hpp>
 #include <mapnik/ptree_helpers.hpp>
+#include <mapnik/xml_node.hpp>
 
 namespace mapnik {
 using boost::property_tree::ptree;
@@ -44,7 +45,7 @@ void format_node::to_xml(ptree &xml) const
 }
 
 
-node_ptr format_node::from_xml(ptree const& xml)
+node_ptr format_node::from_xml(xml_node const& xml)
 {
     format_node *n = new format_node();
     node_ptr np(n);
@@ -52,19 +53,19 @@ node_ptr format_node::from_xml(ptree const& xml)
     node_ptr child = node::from_xml(xml);
     n->set_child(child);
 
-    n->face_name = get_opt_attr<std::string>(xml, "face-name");
+    n->face_name = xml.get_opt_attr<std::string>("face-name");
     /*TODO: Fontset is problematic. We don't have the fontsets pointer here... */
-    n->text_size = get_opt_attr<unsigned>(xml, "size");
+    n->text_size = xml.get_opt_attr<unsigned>("size");
-    n->character_spacing = get_opt_attr<unsigned>(xml, "character-spacing");
+    n->character_spacing = xml.get_opt_attr<unsigned>("character-spacing");
-    n->line_spacing = get_opt_attr<unsigned>(xml, "line-spacing");
+    n->line_spacing = xml.get_opt_attr<unsigned>("line-spacing");
-    n->text_opacity = get_opt_attr<double>(xml, "opactity");
+    n->text_opacity = xml.get_opt_attr<double>("opactity");
-    boost::optional<boolean> wrap = get_opt_attr<boolean>(xml, "wrap-before");
+    boost::optional<boolean> wrap = xml.get_opt_attr<boolean>("wrap-before");
     if (wrap) n->wrap_before = *wrap;
-    n->wrap_char = get_opt_attr<unsigned>(xml, "wrap-character");
+    n->wrap_char = xml.get_opt_attr<unsigned>("wrap-character");
-    n->text_transform = get_opt_attr<text_transform_e>(xml, "text-transform");
+    n->text_transform = xml.get_opt_attr<text_transform_e>("text-transform");
-    n->fill = get_opt_attr<color>(xml, "fill");
+    n->fill = xml.get_opt_attr<color>("fill");
-    n->halo_fill = get_opt_attr<color>(xml, "halo-fill");
+    n->halo_fill = xml.get_opt_attr<color>("halo-fill");
-    n->halo_radius = get_opt_attr<double>(xml, "halo-radius");
+    n->halo_radius = xml.get_opt_attr<double>("halo-radius");
     return np;
 }
 

src/formatting/registry.cpp

@@ -24,6 +24,8 @@
 #include <mapnik/formatting/text.hpp>
 #include <mapnik/formatting/format.hpp>
 #include <mapnik/formatting/expression.hpp>
+#include <mapnik/xml_node.hpp>
+#include <mapnik/config_error.hpp>
 
 namespace mapnik
 {
@@ -46,10 +48,11 @@ void registry::register_name(std::string name, from_xml_function_ptr ptr, bool o
     }
 }
 
-node_ptr registry::from_xml(std::string name, const boost::property_tree::ptree &xml)
+node_ptr registry::from_xml(xml_node const& xml)
 {
-    std::map<std::string, from_xml_function_ptr>::const_iterator itr = map_.find(name);
+    std::map<std::string, from_xml_function_ptr>::const_iterator itr = map_.find(xml.name());
-    if (itr == map_.end())  throw config_error("Unknown element '" + name + "'");
+    if (itr == map_.end())  throw config_error("Unknown element '" + xml.name() + "'", xml);
+    xml.set_processed(true);
     return itr->second(xml);
 }
 } //ns formatting

src/formatting/text.cpp

@@ -26,10 +26,7 @@
 #include <mapnik/feature.hpp>
 #include <mapnik/text_properties.hpp>
 #include <mapnik/processed_text.hpp>
-
+#include <mapnik/xml_node.hpp>
-// boost
-#include <boost/algorithm/string.hpp>
-#include <boost/make_shared.hpp>
 
 namespace mapnik
 {
@@ -46,10 +43,9 @@ void text_node::to_xml(ptree &xml) const
 }
 
 
-node_ptr text_node::from_xml(boost::property_tree::ptree const& xml)
+node_ptr text_node::from_xml(xml_node const& xml)
 {
-    std::string data = xml.data();
+    std::string data = xml.text();
-    boost::trim(data);
     if (data.empty()) return node_ptr(); //No text
     return boost::make_shared<text_node>(parse_expression(data, "utf8"));
 }

src/grid/grid_renderer.cpp

@@ -32,7 +32,6 @@
 #include <mapnik/marker.hpp>
 #include <mapnik/marker_cache.hpp>
 #include <mapnik/unicode.hpp>
-#include <mapnik/config_error.hpp>
 #include <mapnik/font_set.hpp>
 #include <mapnik/parse_path.hpp>
 #include <mapnik/map.hpp>

src/json/feature_collection_parser.cpp

@@ -33,17 +33,17 @@ namespace mapnik { namespace json {
 
 #if BOOST_VERSION >= 104700
 
-template <typename Iterator>
+    template <typename Iterator>
-feature_collection_parser<Iterator>::feature_collection_parser(mapnik::context_ptr const& ctx, mapnik::transcoder const& tr)
+    feature_collection_parser<Iterator>::feature_collection_parser(mapnik::context_ptr const& ctx, mapnik::transcoder const& tr)
         : grammar_(new feature_collection_grammar<iterator_type,feature_type>(ctx,tr)) {}
 
-template <typename Iterator>
+    template <typename Iterator>
-feature_collection_parser<Iterator>::~feature_collection_parser() {}
+    feature_collection_parser<Iterator>::~feature_collection_parser() {}
 #endif
 
-template <typename Iterator>
+    template <typename Iterator>
-bool feature_collection_parser<Iterator>::parse(iterator_type first, iterator_type last, std::vector<mapnik::feature_ptr> & features)
+    bool feature_collection_parser<Iterator>::parse(iterator_type first, iterator_type last, std::vector<mapnik::feature_ptr> & features)
-{
+    {
 #if BOOST_VERSION >= 104700
         using namespace boost::spirit;
         return qi::phrase_parse(first, last, *grammar_, standard_wide::space, features);
@@ -53,9 +53,9 @@ bool feature_collection_parser<Iterator>::parse(iterator_type first, iterator_ty
         throw std::runtime_error("mapnik::feature_collection_parser::parse() requires at least boost 1.47 while your build was compiled against boost " + s.str());
         return false;
 #endif
-}
+    }
 
-template class feature_collection_parser<std::string::const_iterator> ;
+    template class feature_collection_parser<std::string::const_iterator> ;
-template class feature_collection_parser<boost::spirit::multi_pass<std::istreambuf_iterator<char> > >;
+    template class feature_collection_parser<boost::spirit::multi_pass<std::istreambuf_iterator<char> > >;
-}}
+    }}
 

src/json/geojson_generator.cpp

@@ -32,30 +32,30 @@
 
 namespace  mapnik { namespace json {
 
-feature_generator::feature_generator()
+    feature_generator::feature_generator()
         : grammar_(new feature_generator_grammar<sink_type>()) {}
 
-feature_generator::~feature_generator() {}
+    feature_generator::~feature_generator() {}
 
-bool feature_generator::generate(std::string & geojson, mapnik::Feature const& f)
+    bool feature_generator::generate(std::string & geojson, mapnik::Feature const& f)
-{
+    {
         sink_type sink(geojson);
         return karma::generate(sink, *grammar_,f);
-}
+    }
 
 
-geometry_generator::geometry_generator()
+    geometry_generator::geometry_generator()
         : grammar_(new multi_geometry_generator_grammar<sink_type>()) {}
 
-geometry_generator::~geometry_generator() {}
+    geometry_generator::~geometry_generator() {}
 
-bool geometry_generator::generate(std::string & geojson, mapnik::geometry_container const& g)
+    bool geometry_generator::generate(std::string & geojson, mapnik::geometry_container const& g)
-{
+    {
         sink_type sink(geojson);
         return karma::generate(sink, *grammar_,g);
-}
+    }
 
-}}
+    }}
 
 #else
 
@@ -65,22 +65,22 @@ bool geometry_generator::generate(std::string & geojson, mapnik::geometry_contai
 
 namespace  mapnik { namespace json {
 
-bool feature_generator::generate(std::string & geojson, mapnik::Feature const& f)
+    bool feature_generator::generate(std::string & geojson, mapnik::Feature const& f)
-{
+    {
         std::ostringstream s;
         s << BOOST_VERSION/100000 << "." << BOOST_VERSION/100 % 1000  << "." << BOOST_VERSION % 100;
         throw std::runtime_error("feature_generator::generate() requires at least boost 1.47 while your build was compiled against boost " + s.str());
         return false;
-}
+    }
 
-bool geometry_generator::generate(std::string & geojson, mapnik::geometry_container const& g)
+    bool geometry_generator::generate(std::string & geojson, mapnik::geometry_container const& g)
-{
+    {
         std::ostringstream s;
         s << BOOST_VERSION/100000 << "." << BOOST_VERSION/100 % 1000  << "." << BOOST_VERSION % 100;
         throw std::runtime_error("geometry_generator::generate() requires at least boost 1.47 while your build was compiled against boost " + s.str());
         return false;
-}
+    }
 
-}}
+    }}
 
 #endif

src/libxml2_loader.cpp

@@ -22,26 +22,27 @@
 
 #ifdef HAVE_LIBXML2
 
-#include <mapnik/libxml2_loader.hpp>
+// mapnik
-
+#include <mapnik/xml_loader.hpp>
+#include <mapnik/xml_node.hpp>
 #include <mapnik/config_error.hpp>
 
+// boost
 #include <boost/utility.hpp>
-#include <boost/property_tree/ptree.hpp>
 #include <boost/filesystem/operations.hpp>
 #include <boost/algorithm/string/trim.hpp>
 
+// libxml
 #include <libxml/parser.h>
 #include <libxml/tree.h>
 #include <libxml/parserInternals.h>
 #include <libxml/xinclude.h>
 
+// stl
 #include <iostream>
 
-using boost::property_tree::ptree;
 using namespace std;
 
-//#define DEFAULT_OPTIONS (XML_PARSE_NOENT | XML_PARSE_NOBLANKS | XML_PARSE_DTDLOAD | XML_PARSE_NOCDATA)
 #define DEFAULT_OPTIONS (XML_PARSE_NOERROR | XML_PARSE_NOENT | XML_PARSE_NOBLANKS | XML_PARSE_DTDLOAD | XML_PARSE_NOCDATA)
 
 namespace mapnik
@@ -50,14 +51,14 @@ class libxml2_loader : boost::noncopyable
 {
 public:
     libxml2_loader(const char *encoding = NULL, int options = DEFAULT_OPTIONS, const char *url = NULL) :
-        ctx_( 0 ),
+        ctx_(0),
-        encoding_( encoding ),
+        encoding_(encoding),
-        options_( options ),
+        options_(options),
-        url_( url )
+        url_(url)
     {
         LIBXML_TEST_VERSION;
         ctx_ = xmlNewParserCtxt();
-        if ( ! ctx_ )
+        if (!ctx_)
         {
             throw std::runtime_error("Failed to create parser context.");
         }
@@ -71,19 +72,19 @@ public:
         }
     }
 
-    void load( std::string const& filename, ptree & pt )
+    void load(std::string const& filename, xml_node &node)
     {
         boost::filesystem::path path(filename);
-        if ( !boost::filesystem::exists( path ) ) {
+        if (!boost::filesystem::exists(path))
-            throw config_error(string("Could not load map file '") +
+        {
-                               filename + "': File does not exist");
+            throw config_error(string("Could not load map file: File does not exist"), 0, filename);
         }
 
         xmlDocPtr doc = xmlCtxtReadFile(ctx_, filename.c_str(), encoding_, options_);
 
-        if ( !doc )
+        if (!doc)
         {
-            xmlError * error = xmlCtxtGetLastError( ctx_ );
+            xmlError * error = xmlCtxtGetLastError(ctx_);
             if (error)
             {
                 std::ostringstream os;
@@ -91,15 +92,7 @@ public:
                 os << ": " << std::endl << error->message;
                 // remove CR
                 std::string msg = os.str().substr(0, os.str().size() - 1);
-                config_error ex( msg );
+                throw config_error(msg, error->line, error->file);
-
-                os.str("");
-                os << "(encountered in file '" << error->file << "' at line "
-                   << error->line << ")";
-
-                ex.append_context( os.str() );
-
-                throw ex;
             }
         }
 
@@ -110,21 +103,21 @@ public:
           << std::endl;
           }
         */
-        load(doc, pt);
+        load(doc, node);
     }
 
-    void load( const int fd, ptree & pt )
+    void load(const int fd, xml_node &node)
     {
         xmlDocPtr doc = xmlCtxtReadFd(ctx_, fd, url_, encoding_, options_);
-        load(doc, pt);
+        load(doc, node);
     }
 
-    void load_string( std::string const& buffer, ptree & pt, std::string const & base_path )
+    void load_string(std::string const& buffer, xml_node &node, std::string const & base_path)
     {
         if (!base_path.empty())
         {
             boost::filesystem::path path(base_path);
-            if ( ! boost::filesystem::exists( path ) ) {
+            if (!boost::filesystem::exists(path)) {
                 throw config_error(string("Could not locate base_path '") +
                                    base_path + "': file or directory does not exist");
             }
@@ -132,12 +125,12 @@ public:
 
         xmlDocPtr doc = xmlCtxtReadMemory(ctx_, buffer.data(), buffer.length(), base_path.c_str(), encoding_, options_);
 
-        load(doc, pt);
+        load(doc, node);
     }
 
-    void load( const xmlDocPtr doc, ptree & pt )
+    void load(const xmlDocPtr doc, xml_node &node)
     {
-        if ( !doc )
+        if (!doc)
         {
             xmlError * error = xmlCtxtGetLastError( ctx_ );
             std::ostringstream os;
@@ -146,10 +139,10 @@ public:
             {
                 os << ": " << std::endl << error->message;
             }
-            throw config_error(os.str());
+            throw config_error(os.str(), error->line, error->file);
         }
 
-        int iXIncludeReturn = xmlXIncludeProcessFlags( doc, options_ );
+        int iXIncludeReturn = xmlXIncludeProcessFlags(doc, options_);
 
         if (iXIncludeReturn < 0)
         {
@@ -157,63 +150,47 @@ public:
             throw config_error("XML XInclude error.  One or more files failed to load.");
         }
 
-        xmlNode * root = xmlDocGetRootElement( doc );
+        xmlNode * root = xmlDocGetRootElement(doc);
-        if ( ! root ) {
+        if (!root) {
             xmlFreeDoc(doc);
             throw config_error("XML document is empty.");
         }
 
-        populate_tree( root, pt );
+        populate_tree(root, node);
         xmlFreeDoc(doc);
     }
 
 private:
-    void append_attributes( xmlAttr * attributes, ptree & pt)
+    void append_attributes(xmlAttr *attributes, xml_node &node)
     {
-        if (attributes)
+        for (; attributes; attributes = attributes->next )
         {
-            ptree::iterator it = pt.push_back( ptree::value_type( "<xmlattr>", ptree() ));
+            node.add_attribute((char *)attributes->name, (char *)attributes->children->content);
-            ptree & attr_list = it->second;
-            xmlAttr * cur_attr = attributes;
-            for (; cur_attr; cur_attr = cur_attr->next )
-            {
-                ptree::iterator it = attr_list.push_back(
-                    ptree::value_type( (char*)cur_attr->name, ptree() ));
-                it->second.put_value( (char*) cur_attr->children->content );
-            }
         }
     }
 
-    void populate_tree( xmlNode * node, ptree & pt )
+    void populate_tree(xmlNode *cur_node, xml_node &node)
     {
-        xmlNode * cur_node = node;
-
         for (; cur_node; cur_node = cur_node->next )
         {
             switch (cur_node->type)
             {
             case XML_ELEMENT_NODE:
             {
-                ptree::iterator it = pt.push_back( ptree::value_type(
+
-                                                       (char*)cur_node->name, ptree() ));
+                xml_node &new_node = node.add_child((char *)cur_node->name, cur_node->line, false);
-                append_attributes( cur_node->properties, it->second);
+                append_attributes(cur_node->properties, new_node);
-                populate_tree( cur_node->children, it->second );
+                populate_tree(cur_node->children, new_node);
             }
             break;
             case XML_TEXT_NODE:
             {
                 std::string trimmed = boost::algorithm::trim_copy(std::string((char*)cur_node->content));
-                if (trimmed.empty()) break;
+                if (trimmed.empty()) break; //Don't add empty text nodes
-                ptree::iterator it = pt.push_back(ptree::value_type("<xmltext>", ptree()));
+                node.add_child(trimmed, cur_node->line, true);
-                it->second.put_value(trimmed);
             }
             break;
             case XML_COMMENT_NODE:
-            {
-                ptree::iterator it = pt.push_back(
-                    ptree::value_type( "<xmlcomment>", ptree() ));
-                it->second.put_value( (char*) cur_node->content );
-            }
                 break;
             default:
                 break;
@@ -228,15 +205,15 @@ private:
     const char *url_;
 };
 
-void read_xml2( std::string const & filename, boost::property_tree::ptree & pt)
+void read_xml(std::string const & filename, xml_node &node)
 {
     libxml2_loader loader;
-    loader.load( filename, pt );
+    loader.load(filename, node);
 }
-void read_xml2_string( std::string const & str, boost::property_tree::ptree & pt, std::string const & base_path)
+void read_xml_string(std::string const & str, xml_node &node, std::string const & base_path)
 {
     libxml2_loader loader;
-    loader.load_string( str, pt, base_path );
+    loader.load_string(str, node, base_path);
 }
 
 } // end of namespace mapnik

src/metawriter_factory.cpp

@@ -22,15 +22,15 @@
 //$Id$
 
 #include <mapnik/metawriter_factory.hpp>
-#include <mapnik/ptree_helpers.hpp>
-
 #include <mapnik/metawriter_json.hpp>
 #include <mapnik/metawriter_inmem.hpp>
+#include <mapnik/xml_node.hpp>
+#include <mapnik/ptree_helpers.hpp>
+#include <mapnik/config_error.hpp>
 
 #include <boost/make_shared.hpp>
 #include <boost/optional.hpp>
 
-using boost::property_tree::ptree;
 using boost::optional;
 using std::string;
 
@@ -38,20 +38,21 @@ namespace mapnik
 {
 
 metawriter_ptr
-metawriter_create(const boost::property_tree::ptree &pt) {
+metawriter_create(xml_node const& pt)
+{
     metawriter_ptr writer;
-    string type = get_attr<string>(pt, "type");
+    string type = pt.get_attr<string>("type");
 
-    optional<string> properties = get_opt_attr<string>(pt, "default-output");
+    optional<string> properties = pt.get_opt_attr<string>("default-output");
     if (type == "json") {
-        string file = get_attr<string>(pt, "file");
+        string file = pt.get_attr<string>("file");
         metawriter_json_ptr json = boost::make_shared<metawriter_json>(properties, parse_path(file));
-        optional<boolean> output_empty = get_opt_attr<boolean>(pt, "output-empty");
+        optional<boolean> output_empty = pt.get_opt_attr<boolean>("output-empty");
         if (output_empty) {
             json->set_output_empty(*output_empty);
         }
 
-        optional<boolean> pixel_coordinates = get_opt_attr<boolean>(pt, "pixel-coordinates");
+        optional<boolean> pixel_coordinates = pt.get_opt_attr<boolean>("pixel-coordinates");
         if (pixel_coordinates) {
             json->set_pixel_coordinates(*pixel_coordinates);
         }
@@ -61,14 +62,16 @@ metawriter_create(const boost::property_tree::ptree &pt) {
         metawriter_inmem_ptr inmem = boost::make_shared<metawriter_inmem>(properties);
         writer = inmem;
     } else {
-        throw config_error(string("Unknown type '") + type + "'");
+        throw config_error(string("Unknown type '") + type + "'", pt);
     }
 
     return writer;
 }
 
 void
-metawriter_save(const metawriter_ptr &metawriter, ptree &metawriter_node, bool explicit_defaults) {
+metawriter_save(const metawriter_ptr &metawriter,
+                boost::property_tree::ptree &metawriter_node, bool explicit_defaults)
+{
 
     metawriter_json *json = dynamic_cast<metawriter_json *>(metawriter.get());
     if (json) {

src/palette.cpp

@@ -21,6 +21,7 @@
  *****************************************************************************/
 
 #include <mapnik/palette.hpp>
+#include <mapnik/config_error.hpp>
 
 namespace mapnik
 {

src/processed_text.cpp

@@ -1,4 +1,28 @@
+/*****************************************************************************
+ *
+ * This file is part of Mapnik (c++ mapping toolkit)
+ *
+ * Copyright (C) 2012 Artem Pavlenko
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ *****************************************************************************/
+
 #include <mapnik/processed_text.hpp>
+#include <mapnik/config_error.hpp>
+
 namespace mapnik
 {
 
@@ -43,7 +67,7 @@ string_info &processed_text::get_string_info()
         {
             if (!p.fontset.get_name().empty())
             {
-                throw config_error("Unable to find specified font set '" + p.face_name + "'");
+                throw config_error("Unable to find specified font set '" + p.fontset.get_name() + "'");
             } else if (!p.face_name.empty()) {
                 throw config_error("Unable to find specified font face '" + p.face_name + "'");
             } else {

src/rapidxml_loader.cpp

@@ -0,0 +1,171 @@
+
+
+/*****************************************************************************
+ *
+ * This file is part of Mapnik (c++ mapping toolkit)
+ *
+ * Copyright (C) 2011 Artem Pavlenko
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ *****************************************************************************/
+
+#ifdef HAVE_LIBXML2
+#error HAVE_LIBXML2 defined but compiling rapidxml_loader.cpp!
+#endif
+
+// mapnik
+#include <mapnik/xml_loader.hpp>
+#include <boost/property_tree/detail/xml_parser_read_rapidxml.hpp>
+#include <mapnik/xml_node.hpp>
+#include <mapnik/config_error.hpp>
+
+// boost
+#include <boost/utility.hpp>
+#include <boost/algorithm/string/trim.hpp>
+
+// stl
+#include <iostream>
+#include <fstream>
+
+using namespace std;
+namespace rapidxml = boost::property_tree::detail::rapidxml;
+namespace mapnik
+{
+class rapidxml_loader : boost::noncopyable
+{
+public:
+    rapidxml_loader(const char *encoding = NULL) :
+        filename_()
+    {
+
+    }
+
+    ~rapidxml_loader()
+    {
+    }
+
+    void load(const std::string & filename, xml_node &node)
+    {
+        filename_ = filename;
+        std::basic_ifstream<char> stream(filename.c_str());
+        if (!stream)
+        {
+            throw config_error("Could not load map file", 0, filename);
+        }
+//        TODO: stream.imbue(loc);
+        load(stream, node);
+    }
+
+    void load(std::basic_istream<char> &stream, xml_node &node)
+    {
+        stream.unsetf(std::ios::skipws);
+        std::vector<char> v(std::istreambuf_iterator<char>(stream.rdbuf()),
+                            std::istreambuf_iterator<char>());
+        if (!stream.good())
+        {
+            throw config_error("Could not load map file", 0, filename_);
+        }
+        v.push_back(0); // zero-terminate
+        try
+        {
+            // Parse using appropriate flags
+            const int f_tws = rapidxml::parse_normalize_whitespace
+                | rapidxml::parse_trim_whitespace;
+            rapidxml::xml_document<> doc;
+            doc.parse<f_tws>(&v.front());
+
+            for (rapidxml::xml_node<char> *child = doc.first_node();
+                 child; child = child->next_sibling())
+            {
+                populate_tree(child, node);
+            }
+        }
+        catch (rapidxml::parse_error &e)
+        {
+            long line = static_cast<long>(
+                std::count(&v.front(), e.where<char>(), '\n') + 1);
+            throw config_error(e.what(), line, filename_);
+        }
+    }
+
+    void load_string(const std::string & buffer, xml_node &node, std::string const & base_path )
+    {
+
+//        if (!base_path.empty())
+//        {
+//            boost::filesystem::path path(base_path);
+//            if (!boost::filesystem::exists(path)) {
+//                throw config_error(string("Could not locate base_path '") +
+//                                   base_path + "': file or directory does not exist");
+//            }
+//        }
+
+
+        load(buffer, node);
+    }
+private:
+    void populate_tree(rapidxml::xml_node<char> *cur_node, xml_node &node)
+    {
+        switch (cur_node->type())
+        {
+        case rapidxml::node_element:
+        {
+            xml_node &new_node = node.add_child((char *)cur_node->name(), 0, false);
+            // Copy attributes
+            for (rapidxml::xml_attribute<char> *attr = cur_node->first_attribute();
+                 attr; attr = attr->next_attribute())
+            {
+                new_node.add_attribute(attr->name(), attr->value());
+            }
+
+            // Copy children
+            for (rapidxml::xml_node<char> *child = cur_node->first_node();
+                 child; child = child->next_sibling())
+            {
+                populate_tree(child, new_node);
+            }
+        }
+        break;
+
+        // Data nodes
+        case rapidxml::node_data:
+        case rapidxml::node_cdata:
+        {
+            std::string trimmed = boost::algorithm::trim_copy(std::string(cur_node->value()));
+            if (trimmed.empty()) break; //Don't add empty text nodes
+            node.add_child(trimmed, 0, true);
+        }
+        break;
+        default:
+            break;
+        }
+    }
+private:
+    std::string filename_;
+};
+
+void read_xml(std::string const & filename, xml_node &node)
+{
+    rapidxml_loader loader;
+    loader.load(filename, node);
+}
+void read_xml_string(std::string const & str, xml_node &node, std::string const & base_path)
+{
+    rapidxml_loader loader;
+    loader.load_string(str, node, base_path);
+}
+
+} // end of namespace mapnik

src/svg_parser.cpp

@@ -24,6 +24,7 @@
 
 #include <mapnik/svg/svg_parser.hpp>
 #include <mapnik/svg/svg_path_parser.hpp>
+#include <mapnik/config_error.hpp>
 
 #include "agg_ellipse.h"
 #include "agg_rounded_rect.h"

src/text_placements/list.cpp

@@ -20,9 +20,14 @@
  *
  *****************************************************************************/
 
+//mapnik
 #include <mapnik/text_placements/list.hpp>
+#include <mapnik/xml_node.hpp>
+
+//boost
 #include <boost/make_shared.hpp>
 
+
 namespace mapnik
 {
 
@@ -58,8 +63,7 @@ text_symbolizer_properties & text_placements_list::get(unsigned i)
 
 text_placement_info_ptr text_placements_list::get_placement_info(double scale_factor) const
 {
-    return text_placement_info_ptr(
+    return boost::make_shared<text_placement_info_list>(this, scale_factor);
-                boost::make_shared<text_placement_info_list>(this, scale_factor));
 }
 
 text_placements_list::text_placements_list() : text_placements(), list_(0)
@@ -83,20 +87,19 @@ unsigned text_placements_list::size() const
     return list_.size();
 }
 
-text_placements_ptr text_placements_list::from_xml(boost::property_tree::ptree const &xml, fontset_map const & fontsets)
+text_placements_ptr text_placements_list::from_xml(xml_node const &xml, fontset_map const & fontsets)
 {
     using boost::property_tree::ptree;
     text_placements_list *list = new text_placements_list;
     text_placements_ptr ptr = text_placements_ptr(list);
     list->defaults.from_xml(xml, fontsets);
-    ptree::const_iterator itr = xml.begin();
+    xml_node::const_iterator itr = xml.begin();
-    ptree::const_iterator end = xml.end();
+    xml_node::const_iterator end = xml.end();
     for( ;itr != end; ++itr)
     {
-        if ((itr->first.find('<') != std::string::npos) || (itr->first != "Placement")) continue;
+        if (itr->is_text() || !itr->is("Placement")) continue;
-//TODO:       ensure_attrs(symIter->second, "TextSymbolizer/Placement", s_common.str());
         text_symbolizer_properties &p = list->add();
-        p.from_xml(itr->second, fontsets);
+        p.from_xml(*itr, fontsets);
 //TODO:        if (strict_ &&
 //                !p.format.fontset.size())
 //            ensure_font_face(p.format.face_name);

src/text_placements/registry.cpp

@@ -24,6 +24,7 @@
 #include <mapnik/text_placements/simple.hpp>
 #include <mapnik/text_placements/list.hpp>
 #include <mapnik/text_placements/dummy.hpp>
+#include <mapnik/config_error.hpp>
 
 namespace mapnik
 {
@@ -46,10 +47,10 @@ void registry::register_name(std::string name, from_xml_function_ptr ptr, bool o
     }
 }
 
-text_placements_ptr registry::from_xml(std::string name, const boost::property_tree::ptree &xml, fontset_map const& fontsets)
+text_placements_ptr registry::from_xml(std::string name, xml_node const& xml, fontset_map const& fontsets)
 {
     std::map<std::string, from_xml_function_ptr>::const_iterator itr = map_.find(name);
-    if (itr == map_.end())  throw config_error("Unknown placement-type '" + name + "'");
+    if (itr == map_.end())  throw config_error("Unknown placement-type '" + name + "'", xml);
     return itr->second(xml, fontsets);
 }
 } //ns formatting

src/text_placements/simple.cpp

@@ -23,6 +23,7 @@
 // mapnik
 #include <mapnik/text_placements/simple.hpp>
 #include <mapnik/ptree_helpers.hpp>
+#include <mapnik/xml_node.hpp>
 
 // boost
 #include <boost/spirit/include/qi.hpp>
@@ -102,8 +103,7 @@ bool text_placement_info_simple::next_position_only()
 text_placement_info_ptr text_placements_simple::get_placement_info(
     double scale_factor) const
 {
-    return text_placement_info_ptr(
+    return boost::make_shared<text_placement_info_simple>(this, scale_factor);
-                boost::make_shared<text_placement_info_simple>(this, scale_factor));
 }
 
 /** Position string: [POS][SIZE]
@@ -144,10 +144,12 @@ void text_placements_simple::set_positions(std::string positions)
                      (direction_name[push_back(phoenix::ref(direction_), _1)] % ',') >> *(',' >> qi::float_[push_back(phoenix::ref(text_sizes_), _1)]),
                      space
         );
-    if (first != last) {
+    if (first != last)
+    {
         std::cerr << "WARNING: Could not parse text_placement_simple placement string ('" << positions << "').\n";
     }
-    if (direction_.size() == 0) {
+    if (direction_.size() == 0)
+    {
         std::cerr << "WARNING: text_placements_simple with no valid placements! ('"<< positions<<"')\n";
     }
 }
@@ -167,10 +169,10 @@ std::string text_placements_simple::get_positions()
     return positions_; //TODO: Build string from data in direction_ and text_sizes_
 }
 
-text_placements_ptr text_placements_simple::from_xml(boost::property_tree::ptree const &xml, fontset_map const & fontsets)
+text_placements_ptr text_placements_simple::from_xml(xml_node const &xml, fontset_map const & fontsets)
 {
     text_placements_ptr ptr = boost::make_shared<text_placements_simple>(
-                    get_attr<std::string>(xml, "placements", "X"));
+        xml.get_attr<std::string>("placements", "X"));
     ptr->defaults.from_xml(xml, fontsets);
     return ptr;
 }

src/text_properties.cpp

@@ -25,6 +25,8 @@
 #include <mapnik/ptree_helpers.hpp>
 #include <mapnik/expression_string.hpp>
 #include <mapnik/formatting/text.hpp>
+#include <mapnik/xml_node.hpp>
+#include <mapnik/config_error.hpp>
 
 // boost
 #include <boost/make_shared.hpp>
@@ -79,45 +81,45 @@ formatting::node_ptr text_symbolizer_properties::format_tree() const
     return tree_;
 }
 
-void text_symbolizer_properties::from_xml(boost::property_tree::ptree const &sym, fontset_map const & fontsets)
+void text_symbolizer_properties::from_xml(xml_node const &sym, fontset_map const & fontsets)
 {
-    optional<label_placement_e> placement_ = get_opt_attr<label_placement_e>(sym, "placement");
+    optional<label_placement_e> placement_ = sym.get_opt_attr<label_placement_e>("placement");
     if (placement_) label_placement = *placement_;
-    optional<vertical_alignment_e> valign_ = get_opt_attr<vertical_alignment_e>(sym, "vertical-alignment");
+    optional<vertical_alignment_e> valign_ = sym.get_opt_attr<vertical_alignment_e>("vertical-alignment");
     if (valign_) valign = *valign_;
-    optional<unsigned> text_ratio_ = get_opt_attr<unsigned>(sym, "text-ratio");
+    optional<unsigned> text_ratio_ = sym.get_opt_attr<unsigned>("text-ratio");
     if (text_ratio_) text_ratio = *text_ratio_;
-    optional<unsigned> wrap_width_ = get_opt_attr<unsigned>(sym, "wrap-width");
+    optional<unsigned> wrap_width_ = sym.get_opt_attr<unsigned>("wrap-width");
     if (wrap_width_) wrap_width = *wrap_width_;
-    optional<unsigned> label_position_tolerance_ = get_opt_attr<unsigned>(sym, "label-position-tolerance");
+    optional<unsigned> label_position_tolerance_ = sym.get_opt_attr<unsigned>("label-position-tolerance");
     if (label_position_tolerance_) label_position_tolerance = *label_position_tolerance_;
-    optional<unsigned> spacing_ = get_opt_attr<unsigned>(sym, "spacing");
+    optional<unsigned> spacing_ = sym.get_opt_attr<unsigned>("spacing");
     if (spacing_) label_spacing = *spacing_;
-    optional<unsigned> minimum_distance_ = get_opt_attr<unsigned>(sym, "minimum-distance");
+    optional<unsigned> minimum_distance_ = sym.get_opt_attr<unsigned>("minimum-distance");
     if (minimum_distance_) minimum_distance = *minimum_distance_;
-    optional<unsigned> min_padding_ = get_opt_attr<unsigned>(sym, "minimum-padding");
+    optional<unsigned> min_padding_ = sym.get_opt_attr<unsigned>("minimum-padding");
     if (min_padding_) minimum_padding = *min_padding_;
-    optional<unsigned> min_path_length_ = get_opt_attr<unsigned>(sym, "minimum-path-length");
+    optional<unsigned> min_path_length_ = sym.get_opt_attr<unsigned>("minimum-path-length");
     if (min_path_length_) minimum_path_length = *min_path_length_;
-    optional<boolean> avoid_edges_ = get_opt_attr<boolean>(sym, "avoid-edges");
+    optional<boolean> avoid_edges_ = sym.get_opt_attr<boolean>("avoid-edges");
     if (avoid_edges_) avoid_edges = *avoid_edges_;
-    optional<boolean> allow_overlap_ = get_opt_attr<boolean>(sym, "allow-overlap");
+    optional<boolean> allow_overlap_ = sym.get_opt_attr<boolean>("allow-overlap");
     if (allow_overlap_) allow_overlap = *allow_overlap_;
-    optional<horizontal_alignment_e> halign_ = get_opt_attr<horizontal_alignment_e>(sym, "horizontal-alignment");
+    optional<horizontal_alignment_e> halign_ = sym.get_opt_attr<horizontal_alignment_e>("horizontal-alignment");
     if (halign_) halign = *halign_;
-    optional<justify_alignment_e> jalign_ = get_opt_attr<justify_alignment_e>(sym, "justify-alignment");
+    optional<justify_alignment_e> jalign_ = sym.get_opt_attr<justify_alignment_e>("justify-alignment");
     if (jalign_) jalign = *jalign_;
     /* Attributes needing special care */
-    optional<std::string> orientation_ = get_opt_attr<std::string>(sym, "orientation");
+    optional<std::string> orientation_ = sym.get_opt_attr<std::string>("orientation");
     if (orientation_) orientation = parse_expression(*orientation_, "utf8");
-    optional<double> dx = get_opt_attr<double>(sym, "dx");
+    optional<double> dx = sym.get_opt_attr<double>("dx");
     if (dx) displacement.first = *dx;
-    optional<double> dy = get_opt_attr<double>(sym, "dy");
+    optional<double> dy = sym.get_opt_attr<double>("dy");
     if (dy) displacement.second = *dy;
-    optional<double> max_char_angle_delta_ = get_opt_attr<double>(sym, "max-char-angle-delta");
+    optional<double> max_char_angle_delta_ = sym.get_opt_attr<double>("max-char-angle-delta");
     if (max_char_angle_delta_) max_char_angle_delta=(*max_char_angle_delta_)*(M_PI/180);
 
-    optional<std::string> name_ = get_opt_attr<std::string>(sym, "name");
+    optional<std::string> name_ = sym.get_opt_attr<std::string>("name");
     if (name_) {
         std::clog << "### WARNING: Using 'name' in TextSymbolizer/ShieldSymbolizer is deprecated!\n";
         set_old_style_expression(parse_expression(*name_, "utf8"));
@@ -241,34 +243,34 @@ char_properties::char_properties() :
 
 }
 
-void char_properties::from_xml(boost::property_tree::ptree const &sym, fontset_map const & fontsets)
+void char_properties::from_xml(xml_node const& sym, fontset_map const& fontsets)
 {
-    optional<double> text_size_ = get_opt_attr<double>(sym, "size");
+    optional<double> text_size_ = sym.get_opt_attr<double>("size");
     if (text_size_) text_size = *text_size_;
-    optional<double> character_spacing_ = get_opt_attr<double>(sym, "character-spacing");
+    optional<double> character_spacing_ = sym.get_opt_attr<double>("character-spacing");
     if (character_spacing_) character_spacing = *character_spacing_;
-    optional<color> fill_ = get_opt_attr<color>(sym, "fill");
+    optional<color> fill_ = sym.get_opt_attr<color>("fill");
     if (fill_) fill = *fill_;
-    optional<color> halo_fill_ = get_opt_attr<color>(sym, "halo-fill");
+    optional<color> halo_fill_ = sym.get_opt_attr<color>("halo-fill");
     if (halo_fill_) halo_fill = *halo_fill_;
-    optional<double> halo_radius_ = get_opt_attr<double>(sym, "halo-radius");
+    optional<double> halo_radius_ = sym.get_opt_attr<double>("halo-radius");
     if (halo_radius_) halo_radius = *halo_radius_;
-    optional<boolean> wrap_before_ = get_opt_attr<boolean>(sym, "wrap-before");
+    optional<boolean> wrap_before_ = sym.get_opt_attr<boolean>("wrap-before");
     if (wrap_before_) wrap_before = *wrap_before_;
-    optional<text_transform_e> tconvert_ = get_opt_attr<text_transform_e>(sym, "text-transform");
+    optional<text_transform_e> tconvert_ = sym.get_opt_attr<text_transform_e>("text-transform");
     if (tconvert_) text_transform = *tconvert_;
-    optional<double> line_spacing_ = get_opt_attr<double>(sym, "line-spacing");
+    optional<double> line_spacing_ = sym.get_opt_attr<double>("line-spacing");
     if (line_spacing_) line_spacing = *line_spacing_;
-    optional<double> opacity_ = get_opt_attr<double>(sym, "opacity");
+    optional<double> opacity_ = sym.get_opt_attr<double>("opacity");
     if (opacity_) text_opacity = *opacity_;
-    optional<std::string> wrap_char_ = get_opt_attr<std::string>(sym, "wrap-character");
+    optional<std::string> wrap_char_ = sym.get_opt_attr<std::string>("wrap-character");
     if (wrap_char_ && (*wrap_char_).size() > 0) wrap_char = ((*wrap_char_)[0]);
-    optional<std::string> face_name_ = get_opt_attr<std::string>(sym, "face-name");
+    optional<std::string> face_name_ = sym.get_opt_attr<std::string>("face-name");
     if (face_name_)
     {
         face_name = *face_name_;
     }
-    optional<std::string> fontset_name_ = get_opt_attr<std::string>(sym, "fontset-name");
+    optional<std::string> fontset_name_ = sym.get_opt_attr<std::string>("fontset-name");
     if (fontset_name_) {
         std::map<std::string,font_set>::const_iterator itr = fontsets.find(*fontset_name_);
         if (itr != fontsets.end())
@@ -277,16 +279,16 @@ void char_properties::from_xml(boost::property_tree::ptree const &sym, fontset_m
         }
         else
         {
-            throw config_error("Unable to find any fontset named '" + *fontset_name_ + "'");
+            throw config_error("Unable to find any fontset named '" + *fontset_name_ + "'", sym);
         }
     }
     if (!face_name.empty() && !fontset.get_name().empty())
     {
-        throw config_error(std::string("Can't have both face-name and fontset-name"));
+        throw config_error("Can't have both face-name and fontset-name", sym);
     }
     if (face_name.empty() && fontset.get_name().empty())
     {
-        throw config_error(std::string("Must have face-name or fontset-name"));
+        throw config_error("Must have face-name or fontset-name", sym);
     }
 }
 

src/xml_tree.cpp

@@ -0,0 +1,483 @@
+/*****************************************************************************
+ *
+ * This file is part of Mapnik (c++ mapping toolkit)
+ *
+ * Copyright (C) 2012 Artem Pavlenko
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ *****************************************************************************/
+
+//mapnik
+#include <mapnik/xml_tree.hpp>
+#include <mapnik/util/conversions.hpp>
+#include <mapnik/enumeration.hpp>
+#include <mapnik/color_factory.hpp>
+#include <mapnik/gamma_method.hpp>
+#include <mapnik/line_symbolizer.hpp>
+#include <mapnik/feature_type_style.hpp>
+#include <mapnik/text_properties.hpp>
+#include <mapnik/config_error.hpp>
+
+//boost
+#include <boost/lexical_cast.hpp>
+
+namespace mapnik
+{
+
+template <typename T>
+inline boost::optional<T> fast_cast(xml_tree const& tree, std::string const& value)
+{
+    try
+    {
+        return boost::lexical_cast<T>(value);
+    }
+    catch (boost::bad_lexical_cast const& ex)
+    {
+        return boost::optional<T>();
+    }
+}
+
+template <>
+inline boost::optional<int> fast_cast(xml_tree const& tree, std::string const& value)
+{
+    int result;
+    if (mapnik::conversions::string2int(value, result))
+        return boost::optional<int>(result);
+    return boost::optional<int>();
+}
+
+template <>
+inline boost::optional<double> fast_cast(xml_tree const& tree, std::string const& value)
+{
+    double result;
+    if (mapnik::conversions::string2double(value, result))
+        return boost::optional<double>(result);
+    return boost::optional<double>();
+}
+
+template <>
+inline boost::optional<float> fast_cast(xml_tree const& tree, std::string const& value)
+{
+    float result;
+    if (mapnik::conversions::string2float(value, result))
+        return boost::optional<float>(result);
+    return boost::optional<float>();
+}
+
+template <>
+inline boost::optional<std::string> fast_cast(xml_tree const& tree, std::string const& value)
+{
+    return value;
+}
+
+template <>
+inline boost::optional<color> fast_cast(xml_tree const& tree, std::string const& value)
+{
+    mapnik::color c;
+    if (mapnik::color_factory::parse_from_string(c, value, tree.color_grammar))
+    {
+        return c;
+    }
+    else
+    {
+        throw config_error("Failed to parse color '"+value+"'");
+    }
+}
+
+template <>
+inline boost::optional<expression_ptr> fast_cast(xml_tree const& tree, std::string const& value)
+{
+    expression_ptr expr(boost::make_shared<expr_node>(true));
+    if (expression_factory::parse_from_string(expr, value, tree.expr_grammar))
+    {
+        return expr;
+    } else
+    {
+        throw mapnik::config_error("Failed to parse expression '" + value + "'");
+    }
+}
+
+/****************************************************************************/
+
+class boolean;
+template <typename T>
+struct name_trait
+{
+    static std::string name()
+    {
+        return "<unknown>";
+    }
+    // missing name_trait for type ...
+    // if you get here you are probably using a new type
+    // in the XML file. Just add a name trait for the new
+    // type below.
+    BOOST_STATIC_ASSERT( sizeof(T) == 0 );
+};
+
+#define DEFINE_NAME_TRAIT( type, type_name )                            \
+    template <>                                                         \
+    struct name_trait<type>                                             \
+    {                                                                   \
+        static std::string name() { return std::string("type ") + type_name; } \
+    };
+
+
+DEFINE_NAME_TRAIT( double, "double")
+DEFINE_NAME_TRAIT( float, "float")
+DEFINE_NAME_TRAIT( unsigned, "unsigned")
+DEFINE_NAME_TRAIT( boolean, "boolean")
+DEFINE_NAME_TRAIT( int, "integer" )
+DEFINE_NAME_TRAIT( std::string, "string" )
+DEFINE_NAME_TRAIT( color, "color" )
+DEFINE_NAME_TRAIT(expression_ptr, "expression_ptr" )
+
+template <typename ENUM, int MAX>
+struct name_trait< mapnik::enumeration<ENUM, MAX> >
+{
+    typedef enumeration<ENUM, MAX> Enum;
+
+    static std::string name()
+    {
+        std::string value_list("one of [");
+        for (unsigned i = 0; i < Enum::MAX; ++i)
+        {
+            value_list += Enum::get_string( i );
+            if ( i + 1 < Enum::MAX ) value_list += ", ";
+        }
+        value_list += "]";
+
+        return value_list;
+    }
+};
+
+/****************************************************************************/
+
+xml_tree::xml_tree(std::string const& encoding)
+    : node_(*this, "<root>"),
+      file_(),
+      tr_(encoding),
+      color_grammar(),
+      expr_grammar(tr_)
+{
+    node_.set_processed(true); //root node is always processed
+}
+
+void xml_tree::set_filename(std::string fn)
+{
+    file_ = fn;
+}
+
+std::string const& xml_tree::filename() const
+{
+    return file_;
+}
+
+xml_node &xml_tree::root()
+{
+    return node_;
+}
+
+/****************************************************************************/
+xml_attribute::xml_attribute(std::string const& value_)
+    : value(value_), processed(false)
+{
+
+}
+
+/****************************************************************************/
+
+node_not_found::node_not_found(std::string node_name)
+    : node_name_(node_name)
+{
+
+}
+
+const char* node_not_found::what() const throw()
+{
+    return ("Node "+node_name_+ "not found").c_str();
+}
+
+node_not_found::~node_not_found() throw()
+{
+
+}
+
+
+attribute_not_found::attribute_not_found(
+    std::string const& node_name,
+    std::string const& attribute_name)
+    :
+    node_name_(node_name),
+    attribute_name_(attribute_name)
+{
+
+}
+
+const char* attribute_not_found::what() const throw()
+{
+    return ("Attribute '" + attribute_name_ +"' not found in node '"+node_name_+ "'").c_str();
+}
+
+attribute_not_found::~attribute_not_found() throw()
+{
+
+}
+
+more_than_one_child::more_than_one_child(std::string const& node_name)
+    : node_name_(node_name)
+{
+
+}
+
+const char* more_than_one_child::what() const throw()
+{
+    return ("More than one child node in node '" + node_name_ +"'").c_str();
+}
+
+more_than_one_child::~more_than_one_child() throw()
+{
+
+}
+
+/****************************************************************************/
+
+xml_node::xml_node(xml_tree &tree, std::string name, unsigned line, bool text_node)
+    : tree_(tree),
+      name_(name),
+      text_node_(text_node),
+      line_(line),
+      processed_(false)
+{
+
+}
+
+std::string xml_node::xml_text = "<xmltext>";
+
+std::string const& xml_node::name() const
+{
+    if (!text_node_)
+        return name_;
+    else
+        return xml_text;
+}
+
+std::string const& xml_node::text() const
+{
+    if (text_node_)
+    {
+        processed_ = true;
+        return name_;
+    } else
+    {
+        throw config_error("text() called on non-text node", *this);
+    }
+}
+
+std::string const& xml_node::filename() const
+{
+    return tree_.filename();
+}
+
+bool xml_node::is_text() const
+{
+    return text_node_;
+}
+
+bool xml_node::is(std::string const& name) const
+{
+    if (name_ == name)
+    {
+        processed_ = true;
+        return true;
+    }
+    return false;
+}
+
+xml_node &xml_node::add_child(std::string const& name, unsigned line, bool text_node)
+{
+    children_.push_back(xml_node(tree_, name, line, text_node));
+    return children_.back();
+}
+
+void xml_node::add_attribute(std::string const& name, std::string const& value)
+{
+    attributes_.insert(std::make_pair(name,xml_attribute(value)));
+}
+
+xml_node::attribute_map const& xml_node::get_attributes() const
+{
+    return attributes_;
+}
+
+void xml_node::set_processed(bool processed) const
+{
+    processed_ = processed;
+}
+
+bool xml_node::processed() const
+{
+    return processed_;
+}
+
+xml_node::const_iterator xml_node::begin() const
+{
+    return children_.begin();
+}
+
+xml_node::const_iterator xml_node::end() const
+{
+    return children_.end();
+}
+
+xml_node & xml_node::get_child(std::string const& name)
+{
+    std::list<xml_node>::iterator itr = children_.begin();
+    std::list<xml_node>::iterator end = children_.end();
+    for (; itr != end; itr++)
+    {
+        if (!(itr->text_node_) && itr->name_ == name)
+        {
+            itr->set_processed(true);
+            return *itr;
+        }
+    }
+    throw node_not_found(name);
+}
+
+xml_node const& xml_node::get_child(std::string const& name) const
+{
+    xml_node const* node = get_opt_child(name);
+    if (!node) throw node_not_found(name);
+    return *node;
+}
+
+xml_node const* xml_node::get_opt_child(std::string const& name) const
+{
+    const_iterator itr = children_.begin();
+    const_iterator end = children_.end();
+    for (; itr != end; itr++)
+    {
+        if (!(itr->text_node_) && itr->name_ == name)
+        {
+            itr->set_processed(true);
+            return &(*itr);
+        }
+    }
+    return 0;
+}
+
+bool xml_node::has_child(std::string const& name) const
+{
+    return get_opt_child(name) != 0;
+}
+
+template <typename T>
+boost::optional<T> xml_node::get_opt_attr(std::string const& name) const
+{
+    std::map<std::string, xml_attribute>::const_iterator itr = attributes_.find(name);
+    if (itr ==  attributes_.end()) return boost::optional<T>();
+    itr->second.processed = true;
+    boost::optional<T> result = fast_cast<T>(tree_, itr->second.value);
+    if (!result)
+    {
+        throw config_error(std::string("Failed to parse attribute '") +
+                           name + "'. Expected " + name_trait<T>::name() +
+                           " but got '" + itr->second.value + "'", *this);
+    }
+    return result;
+}
+
+template <typename T>
+T xml_node::get_attr(std::string const& name, T const& default_value) const
+{
+    boost::optional<T> value = get_opt_attr<T>(name);
+    if (value) return *value;
+    return default_value;
+}
+
+template <typename T>
+T xml_node::get_attr(std::string const& name) const
+{
+    boost::optional<T> value = get_opt_attr<T>(name);
+    if (value) return *value;
+    throw attribute_not_found(name_, name);
+}
+
+std::string xml_node::get_text() const
+{
+    if (children_.size() == 0)
+    {
+        return "";
+    }
+    if (children_.size() == 1)
+    {
+        return children_.front().text();
+    }
+    throw more_than_one_child(name_);
+}
+
+
+template <typename T>
+T xml_node::get_value() const
+{
+    boost::optional<T> result = fast_cast<T>(tree_, get_text());
+    if (!result)
+    {
+        throw config_error(std::string("Failed to parse value. Expected ")
+                           + name_trait<T>::name() +
+                           " but got '" + get_text() + "'", *this);
+    }
+    return *result;
+}
+
+unsigned xml_node::line() const
+{
+    return line_;
+}
+
+#define compile_get_opt_attr(T) template boost::optional<T> xml_node::get_opt_attr<T>(std::string const&) const
+#define compile_get_attr(T) template T xml_node::get_attr<T>(std::string const&) const; template T xml_node::get_attr<T>(std::string const&, T const&) const
+#define compile_get_value(T) template T xml_node::get_value<T>() const
+
+compile_get_opt_attr(boolean);
+compile_get_opt_attr(std::string);
+compile_get_opt_attr(unsigned);
+compile_get_opt_attr(float);
+compile_get_opt_attr(double);
+compile_get_opt_attr(color);
+compile_get_opt_attr(gamma_method_e);
+compile_get_opt_attr(line_rasterizer_e);
+compile_get_opt_attr(line_join_e);
+compile_get_opt_attr(line_cap_e);
+compile_get_opt_attr(text_transform_e);
+compile_get_opt_attr(label_placement_e);
+compile_get_opt_attr(vertical_alignment_e);
+compile_get_opt_attr(horizontal_alignment_e);
+compile_get_opt_attr(justify_alignment_e);
+compile_get_opt_attr(expression_ptr);
+compile_get_attr(std::string);
+compile_get_attr(filter_mode_e);
+compile_get_attr(point_placement_e);
+compile_get_attr(marker_placement_e);
+compile_get_attr(marker_type_e);
+compile_get_attr(pattern_alignment_e);
+compile_get_attr(line_rasterizer_e);
+compile_get_attr(colorizer_mode);
+compile_get_attr(double);
+compile_get_value(int);
+compile_get_value(double);
+compile_get_value(expression_ptr);
+} //ns mapnik

tests/python_tests/object_test.py

@@ -230,13 +230,8 @@ def test_map_init_from_string():
     map_string = '''<Map background-color="steelblue" base="./" srs="+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs">
      <Style name="My Style">
       <Rule>
-       <PolygonSymbolizer>
+       <PolygonSymbolizer fill="#f2eff9"/>
-        <CssParameter name="fill">#f2eff9</CssParameter>
+       <LineSymbolizer stroke="rgb(50%,50%,50%)" stroke-width="0.1"/>
-       </PolygonSymbolizer>
-       <LineSymbolizer>
-        <CssParameter name="stroke">rgb(50%,50%,50%)</CssParameter>
-        <CssParameter name="stroke-width">0.1</CssParameter>
-       </LineSymbolizer>
       </Rule>
      </Style>
      <Layer name="boundaries">

tests/visual_tests/compare.py

@@ -1,4 +1,4 @@
-import math, operator
+#import math, operator
 import Image
 import sys
 
@@ -27,6 +27,10 @@ def compare(fn1, fn2):
         return -1
     diff = 0
     pixels = im1.size[0] * im1.size[1]
+    delta_pixels = im2.size[0] * im2.size[1]  - pixels
+    if delta_pixels != 0:
+        errors.append((fn1, delta_pixels))
+        return delta_pixels
     im1 = im1.getdata()
     im2 = im2.getdata()
     for i in range(3, pixels - 1, 3):

tests/visual_tests/shieldsymbolizer-1.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!DOCTYPE Map>
-<Map background-color="green" srs="+proj=latlong +datum=WGS84">
+<Map background-color="green" srs="+proj=latlong +datum=WGS84" minimum-version="2.0.0">
 
     <Layer name="layer" srs="+proj=latlong +datum=WGS84">
         <StyleName>My Style</StyleName>

tests/visual_tests/test.py

@@ -50,7 +50,7 @@ def render(filename, width, height=100):
     return m
 
 if len(sys.argv) == 2:
-    files = [(sys.argv[1], 500)]
+    files = [(sys.argv[1], (500, 500))]
 elif len(sys.argv) > 2:
     files = [sys.argv[1:]]