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load_map.cpp
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load_map.cpp
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/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2015 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/debug.hpp>
#include <mapnik/load_map.hpp>
#include <mapnik/xml_tree.hpp>
#include <mapnik/version.hpp>
#include <mapnik/image_compositing.hpp>
#include <mapnik/image_scaling.hpp>
#include <mapnik/color.hpp>
#include <mapnik/color_factory.hpp>
#include <mapnik/symbolizer.hpp>
#include <mapnik/symbolizer_utils.hpp>
#include <mapnik/feature_type_style.hpp>
#include <mapnik/layer.hpp>
#include <mapnik/datasource_cache.hpp>
#include <mapnik/font_engine_freetype.hpp>
#include <mapnik/font_set.hpp>
#include <mapnik/xml_loader.hpp>
#include <mapnik/expression.hpp>
#include <mapnik/parse_path.hpp>
#include <mapnik/parse_transform.hpp>
#include <mapnik/raster_colorizer.hpp>
#include <mapnik/svg/svg_path_parser.hpp>
#include <mapnik/text/placements/registry.hpp>
#include <mapnik/text/placements/dummy.hpp>
#include <mapnik/rule.hpp>
#include <mapnik/config_error.hpp>
#include <mapnik/util/dasharray_parser.hpp>
#include <mapnik/util/conversions.hpp>
#include <mapnik/util/trim.hpp>
#include <mapnik/marker_cache.hpp>
#include <mapnik/util/noncopyable.hpp>
#include <mapnik/util/fs.hpp>
#include <mapnik/image_filter_types.hpp>
#include <mapnik/projection.hpp>
#include <mapnik/group/group_rule.hpp>
#include <mapnik/transform_expression.hpp>
#include <mapnik/evaluate_global_attributes.hpp>
#include <mapnik/boolean.hpp>
// boost
#include <boost/optional.hpp>
#include <boost/tokenizer.hpp>
#include <boost/property_tree/ptree.hpp>
#include <boost/property_tree/xml_parser.hpp>
#include <boost/static_assert.hpp>
// stl
#include <algorithm>
// agg
#include "agg_trans_affine.h"
using boost::tokenizer;
namespace mapnik
{
using boost::optional;
constexpr unsigned name2int(const char *str, int off = 0)
{
return !str[off] ? 5381 : (name2int(str, off+1)*33) ^ static_cast<unsigned>(str[off]);
}
class map_parser : util::noncopyable
{
public:
map_parser(Map & map, bool strict, std::string const& filename = "") :
strict_(strict),
filename_(filename),
font_library_(),
font_file_mapping_(map.get_font_file_mapping()),
font_name_cache_(),
file_sources_(),
fontsets_(),
xml_base_path_() {}
void parse_map(Map & map, xml_node const& node, std::string const& base_path);
private:
void parse_map_include(Map & map, xml_node const& node);
void parse_style(Map & map, xml_node const& node);
void parse_layer(Map & map, xml_node const& node);
void parse_symbolizer_base(symbolizer_base &sym, xml_node const& node);
void parse_fontset(Map & map, xml_node const & node);
bool parse_font(font_set & fset, xml_node const& f);
void parse_rule(feature_type_style & style, xml_node const & node);
void parse_symbolizers(rule & rule, xml_node const & node);
void parse_point_symbolizer(rule & rule, xml_node const& node);
void parse_line_pattern_symbolizer(rule & rule, xml_node const& node);
void parse_polygon_pattern_symbolizer(rule & rule, xml_node const& node);
void parse_text_symbolizer(rule & rule, xml_node const& node);
void parse_shield_symbolizer(rule & rule, xml_node const& node);
void parse_line_symbolizer(rule & rule, xml_node const& node);
void parse_polygon_symbolizer(rule & rule, xml_node const& node);
void parse_building_symbolizer(rule & rule, xml_node const& node);
void parse_raster_symbolizer(rule & rule, xml_node const& node);
void parse_markers_symbolizer(rule & rule, xml_node const& node);
void parse_group_symbolizer(rule &rule, xml_node const& node);
void parse_debug_symbolizer(rule & rule, xml_node const& node);
void parse_dot_symbolizer(rule & rule, xml_node const& node);
void parse_group_rule(group_symbolizer_properties &prop, xml_node const& node);
void parse_simple_layout(group_symbolizer_properties &prop, xml_node const& node);
void parse_pair_layout(group_symbolizer_properties &prop, xml_node const& node);
bool parse_raster_colorizer(raster_colorizer_ptr const& rc, xml_node const& node);
void parse_stroke(symbolizer_base & symbol, xml_node const& node);
void ensure_font_face(std::string const& face_name);
void find_unused_nodes(xml_node const& root);
void find_unused_nodes_recursive(xml_node const& node, std::string & error_text);
std::string ensure_relative_to_xml(boost::optional<std::string> const& opt_path);
void ensure_exists(std::string const& file_path);
void check_styles(Map const & map) const throw (config_error);
boost::optional<color> get_opt_color_attr(boost::property_tree::ptree const& node,
std::string const& name);
bool strict_;
std::string filename_;
std::map<std::string,parameters> datasource_templates_;
font_library font_library_;
freetype_engine::font_file_mapping_type & font_file_mapping_;
std::map<std::string,bool> font_name_cache_;
std::map<std::string,std::string> file_sources_;
std::map<std::string,font_set> fontsets_;
std::string xml_base_path_;
};
void load_map(Map & map, std::string const& filename, bool strict, std::string base_path)
{
xml_tree tree;
tree.set_filename(filename);
read_xml(filename, tree.root());
map_parser parser(map, strict, filename);
parser.parse_map(map, tree.root(), base_path);
}
void load_map_string(Map & map, std::string const& str, bool strict, std::string base_path)
{
xml_tree tree;
if (!base_path.empty())
{
read_xml_string(str, tree.root(), base_path); // accept base_path passed into function
}
else
{
read_xml_string(str, tree.root(), map.base_path()); // FIXME - this value is not fully known yet
}
map_parser parser(map, strict, base_path);
parser.parse_map(map, tree.root(), base_path);
}
void map_parser::parse_map(Map & map, xml_node const& node, std::string const& base_path)
{
try
{
xml_node const& map_node = node.get_child("Map");
try
{
optional<std::string> base_path_from_xml = map_node.get_opt_attr<std::string>("base");
if (!base_path.empty())
{
map.set_base_path(base_path);
}
else if (base_path_from_xml)
{
map.set_base_path(*base_path_from_xml);
}
else if (!filename_.empty())
{
map.set_base_path(mapnik::util::dirname(filename_));
}
xml_base_path_ = map.base_path();
optional<color> bgcolor = map_node.get_opt_attr<color>("background-color");
if (bgcolor)
{
map.set_background(*bgcolor);
}
optional<std::string> image_filename = map_node.get_opt_attr<std::string>("background-image");
if (image_filename)
{
map.set_background_image(ensure_relative_to_xml(image_filename));
}
optional<std::string> comp_op_name = map_node.get_opt_attr<std::string>("background-image-comp-op");
if (comp_op_name)
{
optional<composite_mode_e> comp_op = comp_op_from_string(*comp_op_name);
if (comp_op)
{
map.set_background_image_comp_op(*comp_op);
}
else
{
throw config_error("failed to parse background-image-comp-op: '" + *comp_op_name + "'");
}
}
optional<double> opacity = map_node.get_opt_attr<double>("background-image-opacity");
if (opacity)
{
map.set_background_image_opacity(*opacity);
}
std::string srs = map_node.get_attr("srs", map.srs());
try
{
// create throwaway projection object here to ensure it is valid
projection proj(srs,true);
}
catch (std::exception const& ex)
{
throw mapnik::config_error(ex.what());
}
map.set_srs(srs);
optional<int> buffer_size = map_node.get_opt_attr<int>("buffer-size");
if (buffer_size)
{
map.set_buffer_size(*buffer_size);
}
optional<std::string> maximum_extent = map_node.get_opt_attr<std::string>("maximum-extent");
if (maximum_extent)
{
box2d<double> box;
if (box.from_string(*maximum_extent))
{
map.set_maximum_extent(box);
}
else
{
std::string s_err("failed to parse Map maximum-extent '");
s_err += *maximum_extent + "'";
if (strict_)
{
throw config_error(s_err);
}
else
{
MAPNIK_LOG_ERROR(load_map) << "map_parser: " << s_err;
}
}
}
optional<std::string> font_directory = map_node.get_opt_attr<std::string>("font-directory");
if (font_directory)
{
map.set_font_directory(*font_directory);
if (!map.register_fonts(ensure_relative_to_xml(font_directory), false))
{
if (strict_)
{
throw config_error(std::string("Failed to load fonts from: ") + *font_directory);
}
}
}
optional<std::string> min_version_string = map_node.get_opt_attr<std::string>("minimum-version");
if (min_version_string)
{
boost::char_separator<char> sep(".");
boost::tokenizer<boost::char_separator<char> > tokens(*min_version_string, sep);
unsigned i = 0;
bool success = false;
int n[3];
for (auto const& beg : tokens)
{
std::string item = mapnik::util::trim_copy(beg);
if (!mapnik::util::string2int(item,n[i]))
{
throw config_error(std::string("Invalid version string encountered: '")
+ beg + "' in '" + *min_version_string + "'");
}
if (i==2)
{
success = true;
break;
}
++i;
}
if (success)
{
int min_version = (n[0] * 100000) + (n[1] * 100) + (n[2]);
if (min_version > MAPNIK_VERSION)
{
throw config_error(std::string("This map uses features only present in Mapnik version ") + *min_version_string + " and newer");
}
}
}
}
catch (config_error const& ex)
{
ex.append_context(map_node);
throw;
}
parse_map_include(map, map_node);
}
catch (node_not_found const&)
{
throw config_error("Not a map file. Node 'Map' not found.");
}
find_unused_nodes(node);
if (strict_)
{
check_styles(map);
}
}
void map_parser::parse_map_include(Map & map, xml_node const& node)
{
try
{
for (auto const& n : node)
{
if (n.is_text()) continue;
if (n.is("Include"))
{
parse_map_include(map, n);
}
else if (n.is("Style"))
{
parse_style(map, n);
}
else if (n.is("Layer"))
{
parse_layer(map, n);
}
else if (n.is("FontSet"))
{
parse_fontset(map, n);
}
else if (n.is("FileSource"))
{
file_sources_[n.get_attr<std::string>("name")] = n.get_text();
}
else if (n.is("Datasource"))
{
std::string name = n.get_attr("name", std::string("Unnamed"));
parameters params;
for (auto const& p: n)
{
if (p.is("Parameter"))
{
params[p.get_attr<std::string>("name")] = p.get_text();
}
}
datasource_templates_[std::move(name)] = std::move(params);
}
else if (n.is("Parameters"))
{
parameters & params = map.get_extra_parameters();
for (auto const& p: n)
{
if (p.is("Parameter"))
{
std::string val = p.get_text();
std::string key = p.get_attr<std::string>("name");
mapnik::value_bool b;
mapnik::value_integer i;
mapnik::value_double d;
if (mapnik::util::string2int(val,i)) params[key] = i;
else if (mapnik::util::string2bool(val,b)) params[key] = b;
else if (mapnik::util::string2double(val,d)) params[key] = d;
else params[key] = val;
}
}
}
}
}
catch (config_error const& ex)
{
ex.append_context(node);
throw;
}
}
void map_parser::parse_style(Map & map, xml_node const& node)
{
std::string name("<missing name>");
try
{
name = node.get_attr<std::string>("name");
feature_type_style style;
filter_mode_e filter_mode = node.get_attr<filter_mode_e>("filter-mode", FILTER_ALL);
style.set_filter_mode(filter_mode);
// compositing
optional<std::string> comp_op_name = node.get_opt_attr<std::string>("comp-op");
if (comp_op_name)
{
optional<composite_mode_e> comp_op = comp_op_from_string(*comp_op_name);
if (comp_op)
{
style.set_comp_op(*comp_op);
}
else
{
throw config_error("failed to parse comp-op: '" + *comp_op_name + "'");
}
}
optional<double> opacity = node.get_opt_attr<double>("opacity");
if (opacity) style.set_opacity(*opacity);
optional<mapnik::boolean_type> image_filters_inflate = node.get_opt_attr<mapnik::boolean_type>("image-filters-inflate");
if (image_filters_inflate)
{
style.set_image_filters_inflate(*image_filters_inflate);
}
// image filters
optional<std::string> filters = node.get_opt_attr<std::string>("image-filters");
if (filters)
{
if (!parse_image_filters(*filters, style.image_filters())) {
throw config_error("failed to parse image-filters: '" + *filters + "'");
}
}
// direct image filters (applied directly on main image buffer
// TODO : consider creating a separate XML node e.g
// <ImageFilter name="myfilter" op="blur emboss"/>
//
optional<std::string> direct_filters = node.get_opt_attr<std::string>("direct-image-filters");
if (direct_filters)
{
if (!parse_image_filters(*direct_filters, style.direct_image_filters())) {
throw config_error("failed to parse direct-image-filters: '" + *direct_filters + "'");
}
}
style.reserve(node.size());
// rules
for (auto const& rule_ : node)
{
if (rule_.is("Rule"))
{
parse_rule(style, rule_);
}
}
map.insert_style(name, std::move(style));
}
catch (config_error const& ex)
{
ex.append_context(std::string("in style '") + name + "'", node);
throw;
}
}
void map_parser::parse_fontset(Map & map, xml_node const& node)
{
std::string name("<missing name>");
try
{
name = node.get_attr<std::string>("name");
font_set fontset(name);
bool success = false;
for (auto const& n: node)
{
if (n.is("Font"))
{
if (parse_font(fontset, n))
{
success = true;
}
else
{
// https://github.com/mapnik/mapnik/issues/1791
MAPNIK_LOG_ERROR(fontset) << "warning: unable to find face-name '"
<< n.get_attr<std::string>("face-name","")
<< "' in FontSet '" << fontset.get_name() << "'";
}
}
}
// if not at least one face-name is valid
if (!success)
{
throw mapnik::config_error("no valid fonts could be loaded");
}
// XXX Hack because map object isn't accessible by text_symbolizer
// when it's parsed
fontsets_.emplace(name, fontset);
map.insert_fontset(name, std::move(fontset));
}
catch (config_error const& ex)
{
ex.append_context(std::string("in FontSet '") + name + "'", node);
throw;
}
}
bool map_parser::parse_font(font_set & fset, xml_node const& f)
{
optional<std::string> has_face_name = f.get_opt_attr<std::string>("face-name");
if (has_face_name)
{
std::string face_name = *has_face_name;
bool found = false;
auto itr = font_name_cache_.find(face_name);
if (itr != font_name_cache_.end())
{
found = itr->second;
}
else
{
found = freetype_engine::can_open(face_name,
font_library_,
font_file_mapping_,
freetype_engine::get_mapping());
font_name_cache_.emplace(face_name,found);
}
if (found)
{
fset.add_face_name(face_name);
return true;
}
else if (strict_)
{
throw config_error("Failed to find font face '" + face_name + "'");
}
}
else
{
throw config_error("Must have 'face-name' set", f);
}
return false;
}
void map_parser::parse_layer(Map & map, xml_node const& node)
{
std::string name;
try
{
optional<mapnik::boolean_type> status = node.get_opt_attr<mapnik::boolean_type>("status");
// return early is status is off
if (status && !(*status)){
node.set_ignore(true);
return;
}
name = node.get_attr("name", std::string("Unnamed"));
// If no projection is given inherit from map
std::string srs = node.get_attr("srs", map.srs());
try
{
// create throwaway projection object here to ensure it is valid
projection proj(srs,true);
}
catch (std::exception const& ex)
{
throw mapnik::config_error(ex.what());
}
layer lyr(name, srs);
if (status)
{
lyr.set_active(* status);
}
optional<double> minimum_scale_denom = node.get_opt_attr<double>("minimum-scale-denominator");
if (minimum_scale_denom)
{
lyr.set_minimum_scale_denominator(* minimum_scale_denom);
}
else // back compatibility: remove at Mapnik 4.x
{
optional<double> min_zoom = node.get_opt_attr<double>("minzoom");
if (min_zoom)
{
MAPNIK_LOG_ERROR(markers_symbolizer) << "'minzoom' is deprecated and will be removed in Mapnik 4.x, use 'minimum-scale-denominator' instead (encountered in layer " << name << ")";
lyr.set_minimum_scale_denominator(* min_zoom);
}
}
optional<double> maximum_scale_denom = node.get_opt_attr<double>("maximum-scale-denominator");
if (maximum_scale_denom)
{
lyr.set_maximum_scale_denominator(* maximum_scale_denom);
}
else // back compatibility: remove at Mapnik 4.x
{
optional<double> max_zoom = node.get_opt_attr<double>("maxzoom");
if (max_zoom)
{
MAPNIK_LOG_ERROR(markers_symbolizer) << "'maxzoom' is deprecated and will be removed in Mapnik 4.x, use 'maximum-scale-denominator' instead (encountered in layer " << name << ")";
lyr.set_maximum_scale_denominator(* max_zoom);
}
}
optional<mapnik::boolean_type> queryable = node.get_opt_attr<mapnik::boolean_type>("queryable");
if (queryable)
{
lyr.set_queryable(* queryable);
}
optional<mapnik::boolean_type> clear_cache =
node.get_opt_attr<mapnik::boolean_type>("clear-label-cache");
if (clear_cache)
{
lyr.set_clear_label_cache(* clear_cache);
}
optional<mapnik::boolean_type> cache_features =
node.get_opt_attr<mapnik::boolean_type>("cache-features");
if (cache_features)
{
lyr.set_cache_features(* cache_features);
}
optional<std::string> group_by =
node.get_opt_attr<std::string>("group-by");
if (group_by)
{
lyr.set_group_by(* group_by);
}
optional<int> buffer_size = node.get_opt_attr<int>("buffer-size");
if (buffer_size)
{
lyr.set_buffer_size(*buffer_size);
}
optional<std::string> maximum_extent = node.get_opt_attr<std::string>("maximum-extent");
if (maximum_extent)
{
box2d<double> box;
if (box.from_string(*maximum_extent))
{
lyr.set_maximum_extent(box);
}
else
{
std::string s_err("failed to parse Layer maximum-extent '");
s_err += *maximum_extent + "' for '" + name + "'";
if (strict_)
{
throw config_error(s_err);
}
else
{
MAPNIK_LOG_ERROR(load_map) << "map_parser: " << s_err;
}
}
}
for (auto const& child: node)
{
if (child.is("StyleName"))
{
std::string const& style_name = child.get_text();
if (style_name.empty())
{
std::string ss("StyleName is empty in Layer: '");
ss += lyr.name() + "'";
if (strict_)
{
throw config_error(ss);
}
else
{
MAPNIK_LOG_WARN(load_map) << "map_parser: " << ss;
}
}
else
{
lyr.add_style(style_name);
}
}
else if (child.is("Datasource"))
{
parameters params;
optional<std::string> base = child.get_opt_attr<std::string>("base");
if(base)
{
std::map<std::string,parameters>::const_iterator base_itr = datasource_templates_.find(*base);
if (base_itr != datasource_templates_.end())
{
params = base_itr->second;
}
else
{
MAPNIK_LOG_ERROR(datasource) << "Datasource template '" << *base
<< "' not found for layer '" << name << "'";
}
}
for (auto const& n : child)
{
if (n.is("Parameter"))
{
params[n.get_attr<std::string>("name")] = n.get_text();
}
}
boost::optional<std::string> base_param = params.get<std::string>("base");
boost::optional<std::string> file_param = params.get<std::string>("file");
if (base_param)
{
params["base"] = ensure_relative_to_xml(base_param);
}
else if (file_param)
{
params["file"] = ensure_relative_to_xml(file_param);
}
//now we are ready to create datasource
try
{
std::shared_ptr<datasource> ds =
datasource_cache::instance().create(params);
lyr.set_datasource(ds);
}
catch (std::exception const& ex)
{
throw config_error(ex.what());
}
catch (...)
{
throw config_error("Unknown exception occured attempting to create datasoure for layer '" + lyr.name() + "'");
}
}
}
map.add_layer(std::move(lyr));
}
catch (config_error const& ex)
{
if (!name.empty())
{
ex.append_context(std::string(" encountered during parsing of layer '") + name + "'", node);
}
throw;
}
}
void map_parser::parse_rule(feature_type_style & style, xml_node const& node)
{
std::string name;
try
{
name = node.get_attr("name", std::string());
rule rule(name);
xml_node const* child = node.get_opt_child("Filter");
if (child)
{
rule.set_filter(child->get_value<expression_ptr>());
}
if (node.has_child("ElseFilter"))
{
rule.set_else(true);
}
if (node.has_child("AlsoFilter"))
{
rule.set_also(true);
}
child = node.get_opt_child("MinScaleDenominator");
if (child)
{
rule.set_min_scale(child->get_value<double>());
}
child = node.get_opt_child("MaxScaleDenominator");
if (child)
{
rule.set_max_scale(child->get_value<double>());
}
parse_symbolizers(rule, node);
style.add_rule(std::move(rule));
}
catch (config_error const& ex)
{
if (!name.empty())
{
ex.append_context(std::string("in rule '") + name + "'", node);
}
throw;
}
}
void map_parser::parse_symbolizers(rule & rule, xml_node const & node)
{
rule.reserve(node.size());
for (auto const& sym_node : node)
{
switch (name2int(sym_node.name().c_str()))
{
case name2int("PointSymbolizer"):
parse_point_symbolizer(rule, sym_node);
sym_node.set_processed(true);
break;
case name2int("LinePatternSymbolizer"):
parse_line_pattern_symbolizer(rule, sym_node);
sym_node.set_processed(true);
break;
case name2int("PolygonPatternSymbolizer"):
parse_polygon_pattern_symbolizer(rule, sym_node);
sym_node.set_processed(true);
break;
case name2int("TextSymbolizer"):
parse_text_symbolizer(rule, sym_node);
sym_node.set_processed(true);
break;
case name2int("ShieldSymbolizer"):
parse_shield_symbolizer(rule, sym_node);
sym_node.set_processed(true);
break;
case name2int("LineSymbolizer"):
parse_line_symbolizer(rule, sym_node);
sym_node.set_processed(true);
break;
case name2int("PolygonSymbolizer"):
parse_polygon_symbolizer(rule, sym_node);
sym_node.set_processed(true);
break;
case name2int("BuildingSymbolizer"):
parse_building_symbolizer(rule, sym_node);
sym_node.set_processed(true);
break;
case name2int("RasterSymbolizer"):
parse_raster_symbolizer(rule, sym_node);
sym_node.set_processed(true);
break;
case name2int("MarkersSymbolizer"):
parse_markers_symbolizer(rule, sym_node);
sym_node.set_processed(true);
break;
case name2int("GroupSymbolizer"):
parse_group_symbolizer(rule, sym_node);
sym_node.set_processed(true);
break;
case name2int("DebugSymbolizer"):
parse_debug_symbolizer(rule, sym_node);
sym_node.set_processed(true);
break;
case name2int("DotSymbolizer"):
parse_dot_symbolizer(rule, sym_node);
sym_node.set_processed(true);
break;
default:
break;
}
}
}
void map_parser::parse_symbolizer_base(symbolizer_base &sym, xml_node const& node)
{
set_symbolizer_property<symbolizer_base,double>(sym, keys::simplify_tolerance, node);
set_symbolizer_property<symbolizer_base,double>(sym, keys::smooth, node);
set_symbolizer_property<symbolizer_base,boolean_type>(sym, keys::clip, node);
set_symbolizer_property<symbolizer_base,composite_mode_e>(sym, keys::comp_op, node);
set_symbolizer_property<symbolizer_base,transform_type>(sym, keys::geometry_transform, node);
set_symbolizer_property<symbolizer_base,simplify_algorithm_e>(sym, keys::simplify_algorithm, node);
}
void map_parser::parse_point_symbolizer(rule & rule, xml_node const & node)
{
try
{
optional<std::string> file = node.get_opt_attr<std::string>("file");
optional<std::string> base = node.get_opt_attr<std::string>("base");
point_symbolizer sym;
parse_symbolizer_base(sym, node);
set_symbolizer_property<symbolizer_base,double>(sym, keys::opacity, node);
set_symbolizer_property<symbolizer_base,boolean_type>(sym, keys::allow_overlap, node);
set_symbolizer_property<symbolizer_base,boolean_type>(sym, keys::ignore_placement, node);
set_symbolizer_property<symbolizer_base,point_placement_enum>(sym, keys::point_placement_type, node);
set_symbolizer_property<symbolizer_base,transform_type>(sym, keys::image_transform, node);
if (file && !file->empty())
{
if(base)
{
std::map<std::string,std::string>::const_iterator itr = file_sources_.find(*base);
if (itr!=file_sources_.end())
{
*file = itr->second + "/" + *file;
}
}
*file = ensure_relative_to_xml(file);
std::string filename = *file;
ensure_exists(filename);
put(sym, keys::file, parse_path(filename));
}
rule.append(std::move(sym));
}
catch (config_error const& ex)
{
ex.append_context(node);
throw;
}
}
void map_parser::parse_dot_symbolizer(rule & rule, xml_node const & node)
{
try
{
dot_symbolizer sym;
set_symbolizer_property<symbolizer_base,color>(sym, keys::fill, node);
set_symbolizer_property<symbolizer_base,double>(sym, keys::opacity, node);
set_symbolizer_property<symbolizer_base,double>(sym, keys::width, node);
set_symbolizer_property<symbolizer_base,double>(sym, keys::height, node);
set_symbolizer_property<symbolizer_base,composite_mode_e>(sym, keys::comp_op, node);
rule.append(std::move(sym));
}
catch (config_error const& ex)
{
ex.append_context(node);
throw;
}
}
void map_parser::parse_markers_symbolizer(rule & rule, xml_node const& node)
{
try
{
std::string filename("");
optional<std::string> file = node.get_opt_attr<std::string>("file");
optional<std::string> base = node.get_opt_attr<std::string>("base");
if (file && !file->empty())
{
if (base)
{
std::map<std::string,std::string>::const_iterator itr = file_sources_.find(*base);
if (itr!=file_sources_.end())
{
*file = itr->second + "/" + *file;
}
}
filename = ensure_relative_to_xml(file);
}
optional<std::string> marker_type = node.get_opt_attr<std::string>("marker-type");
if (marker_type)
{
// TODO - revisit whether to officially deprecate marker-type
// https://github.com/mapnik/mapnik/issues/1427
//MAPNIK_LOG_WARN(markers_symbolizer) << "'marker-type' is deprecated and will be removed in Mapnik 3.x, use file='shape://<type>' to specify known svg shapes";
// back compatibility with Mapnik 2.0.0
if (!marker_type->empty() && filename.empty())
{
if (*marker_type == "ellipse")
{
filename = marker_cache::instance().known_svg_prefix_ + "ellipse";
}
else if (*marker_type == "arrow")
{
filename = marker_cache::instance().known_svg_prefix_ + "arrow";
}
}
}
markers_symbolizer sym;
parse_symbolizer_base(sym, node);
if (!filename.empty())
{
ensure_exists(filename);