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#include "xmlutils.h"
#include <cassert>
#include <utility>
#include <wx/ffile.h>
#include <wx/intl.h>
#include <wx/log.h>
namespace
{
class CompactPrinter : public tinyxml2::XMLPrinter
{
public:
CompactPrinter(std::FILE* file = nullptr, bool compact = false, int depth = 0) :
tinyxml2::XMLPrinter(file, compact, depth)
{
}
protected:
void PrintSpace(int depth) override
{
for (int i = 0; i < depth; ++i) {
Write(" ");
}
}
};
const std::pair<wxUniChar, wxString> entities[] = {
{'&', "&"}, {'<', "<"}, {'>', ">"}, {'\'', "'"}, {'"', """}, {'\n', "
"},
};
wxString encodeEntities(const wxString& input)
{
if (input.find_first_of("&<>'\"\n") == wxString::npos) {
return input;
}
wxString output;
output.reserve(input.size() * 1.2);
auto isEntity = false;
for (const auto& c : input) {
for (const auto& [ch, entity] : entities) {
if (c == ch) {
output.append(entity);
isEntity = true;
break;
}
}
if (!isEntity) {
output.Append(c);
} else {
isEntity = false;
}
}
return output;
}
wxString decodeEntities(const wxString& input)
{
if (input.find_first_of("&") == wxString::npos) {
return input;
}
wxString output;
output.reserve(input.size());
wxString sequence;
sequence.reserve(8);
enum class State {
SEARCH,
BUILD,
};
State state = State::SEARCH;
for (const auto& c : input) {
switch (state) {
case State::SEARCH:
if (c.GetValue() == '&') {
sequence = c;
state = State::BUILD;
} else {
output.Append(c);
}
break;
case State::BUILD:
sequence.Append(c);
if (c.GetValue() == ';') {
auto isEntity = false;
for (const auto& [ch, entity] : entities) {
if (sequence == entity) {
output.Append(ch);
isEntity = true;
break;
}
}
if (!isEntity) {
auto isNumeric = false;
if (sequence[1] == '#') {
unsigned long value = 0;
if (sequence[2] == 'x') {
if ((isNumeric = sequence.substr(3, sequence.length() - 3 - 1).ToCULong(&value, 16))) {
output.Append(wxUniChar(value));
}
} else {
if ((isNumeric = sequence.substr(2, sequence.length() - 2 - 1).ToCULong(&value, 10))) {
output.Append(wxUniChar(value));
}
}
}
if (!isNumeric) {
output.append(sequence);
}
}
sequence.clear();
state = State::SEARCH;
}
break;
}
}
if (!sequence.empty()) {
output.append(sequence);
}
return output;
}
} // namespace
namespace XMLUtils
{
std::unique_ptr<tinyxml2::XMLDocument> LoadXMLFile(const wxString& path, bool collapseWhitespace)
{
wxLogDebug("Loading XML file: %s", path);
// Use wxFFile to get full unicode support for path on Windows
wxFFile file;
if (wxLogNull noLog; !file.Open(path, "rb")) {
return std::unique_ptr<tinyxml2::XMLDocument>();
}
auto doc = std::make_unique<tinyxml2::XMLDocument>(
false, collapseWhitespace ? tinyxml2::COLLAPSE_WHITESPACE : tinyxml2::PRESERVE_WHITESPACE);
doc->LoadFile(file.fp());
return doc;
}
bool SaveXMLFile(const wxString& path, const tinyxml2::XMLDocument& document, bool compact)
{
assert(!document.ProcessEntities());
// Use wxFFile to get full unicode support for path on Windows
wxFFile file;
if (wxLogNull noLog; !file.Open(path, "w")) {
return false;
}
CompactPrinter printer(file.fp(), compact);
document.Print(&printer);
return true;
}
wxString SaveXMLString(const tinyxml2::XMLDocument& document, bool compact)
{
assert(!document.ProcessEntities());
CompactPrinter printer(nullptr, compact);
document.Print(&printer);
return wxString(printer.CStr(), wxConvUTF8);
}
wxString StringAttribute(const tinyxml2::XMLElement* element, const wxString& name, const wxString& defaultValue)
{
const auto* value = element->Attribute(name.utf8_str());
return (value ? decodeEntities(wxString(value, wxConvUTF8)) : defaultValue);
}
void SetAttribute(tinyxml2::XMLElement* element, const wxString& name, const wxString& value)
{
element->SetAttribute(name.utf8_str(), encodeEntities(value).utf8_str());
}
wxString GetText(const tinyxml2::XMLElement* element, const wxString& defaultValue, bool deepSearch)
{
const char* value = nullptr;
if (!deepSearch) {
value = element->GetText();
} else {
for (const auto* node = element->FirstChild(); node; node = node->NextSibling()) {
if (node->ToText()) {
value = node->Value();
break;
}
}
}
return (value ? decodeEntities(wxString(value, wxConvUTF8)) : defaultValue);
}
void SetText(tinyxml2::XMLElement* element, const wxString& value, bool insertElement)
{
if (!insertElement) {
element->SetText(encodeEntities(value).utf8_str());
} else {
element->InsertNewText(encodeEntities(value).utf8_str());
}
}
} // namespace XMLUtils
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