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SVG CSS: add basic parsing of <style> [C]DATA

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This commit is contained in:
Artem Pavlenko 2020-02-04 11:41:22 +00:00
parent 4d54e81889
commit b6e567d87c
1 changed files with 33 additions and 3 deletions
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36
src/svg/svg_parser.cpp
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@ -58,6 +58,25 @@
namespace mapnik { namespace svg {
namespace {
void print_css(mapnik::css_data & data)
{
for (auto const& kv : data)
{
std::cerr << std::get<0>(kv) << " {" << std::endl;
for (auto const& def : std::get<1>(kv))
{
std::cerr << " " << std::get<0>(def) << ":";
mapnik::util::apply_visitor([](auto const& val){
std::cerr << val << std::endl;
}, std::get<1>(def));
}
std::cerr << "}" << std::endl;
}
}
}
using util::name_to_int;
using util::operator"" _case;
@ -445,14 +464,25 @@ void traverse_tree(svg_parser & parser, rapidxml::xml_node<char> const* node)
if ("style"_case == name)
{
// <style> element shouldn't have nested elements
// only CDATA
// we only interested in DATA or CDATA
for (auto const* child = node->first_node();
child; child = child->next_sibling())
{
if (child->type() == rapidxml::node_cdata)
if (child->type() == rapidxml::node_data ||
child->type() == rapidxml::node_cdata)
{
std::cerr << "======================== STYLE " << std::endl;
std::cerr << "CDATA:" << child->value() << std::endl;
mapnik::css_data css;
auto const grammar = mapnik::grammar();
auto const skipper = mapnik::skipper();
char const* first = child->value();
char const* last = first + child->value_size();
std::vector<std::string> classes;
bool result = boost::spirit::x3::phrase_parse(first, last, grammar, skipper, css);
if (result)
{
print_css(css);
}
}
}
}