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#pragma once
#include "xml-document-decl.h"
#include "libxml-guards.h"
#include <util/stream/str.h>
#include <util/string/cast.h>
namespace NXml {
#define THROW(x, y) ythrow yexception() << #x << ": " << y
// libxml defines unsigned char -> xmlChar,
// and all functions use xmlChar.
inline static const char* CAST2CHAR(const xmlChar* x) {
return reinterpret_cast<const char*>(x);
}
inline static const xmlChar* XMLCHAR(const char* x) {
return reinterpret_cast<const xmlChar*>(x);
}
template <class T>
void TNode::AttrInternal(TCharPtr& value, T& res, TStringBuf errContext) const {
try {
res = FromString<T>(CAST2CHAR(value.Get()));
} catch (TFromStringException&) {
THROW(XmlException, "Failed to convert string " << TString{TStringBuf(CAST2CHAR(value.Get())).substr(0, 50)}.Quote() << " from '" << errContext << "' to requested type");
}
}
template <>
inline void TNode::AttrInternal(TCharPtr& value, TString& res, TStringBuf /*errContext*/) const {
TString tmp(CAST2CHAR(value.Get()));
res.swap(tmp);
}
template <class T>
T TNode::Attr(TZtStringBuf name) const {
TCharPtr value(xmlGetProp(NodePointer, XMLCHAR(name.c_str())));
if (!value) {
THROW(AttributeNotFound, Path() << "@" << name);
}
T t;
AttrInternal(value, t, name);
return t;
}
template <class T>
T TNode::Attr(TZtStringBuf name, const T& defvalue) const {
TCharPtr attr(xmlGetProp(NodePointer, XMLCHAR(name.c_str())));
if (!attr) {
return defvalue;
}
T t;
AttrInternal(attr, t, name);
return t;
}
template <class T>
void TNode::Attr(TZtStringBuf name, T& value) const {
TCharPtr attr(xmlGetProp(NodePointer, XMLCHAR(name.c_str())));
if (!attr) {
THROW(AttributeNotFound, Path() << name);
}
AttrInternal(attr, value, name);
}
template <class T>
void TNode::Attr(TZtStringBuf name, T& value, const T& defvalue) const {
TCharPtr attr(xmlGetProp(NodePointer, XMLCHAR(name.c_str())));
if (!attr) {
value = defvalue;
} else {
AttrInternal(attr, value, name);
}
}
template <class T>
T TNode::Value() const {
if (!NodePointer || xmlIsBlankNode(NodePointer)) {
THROW(NodeIsBlank, Path());
}
TCharPtr val(xmlNodeGetContent(NodePointer));
T t;
AttrInternal(val, t, this->Name());
return t;
}
template <class T>
T TNode::Value(const T& defvalue) const {
if (!NodePointer || xmlIsBlankNode(NodePointer)) {
return defvalue;
}
TCharPtr val(xmlNodeGetContent(NodePointer));
T t;
AttrInternal(val, t, this->Name());
return t;
}
template <class T>
typename std::enable_if<!std::is_convertible_v<T, TStringBuf>, void>::type
TNode::SetValue(const T& value) {
TStringStream ss;
ss << value;
SetValue(ss.Str());
}
inline void TNode::SetValue(TStringBuf value) {
xmlNodeSetContent(NodePointer, XMLCHAR(""));
xmlNodeAddContentLen(NodePointer, XMLCHAR(value.data()), value.Size());
}
inline void TNode::SetAttr(TZtStringBuf name, TZtStringBuf value) {
xmlAttr* attr = xmlSetProp(NodePointer, XMLCHAR(name.c_str()), XMLCHAR(value.c_str()));
if (!attr) {
THROW(XmlException, "Can't set node attribute <"
<< name
<< "> to <"
<< value
<< ">");
}
}
template <class T>
typename std::enable_if<!std::is_convertible_v<T, TZtStringBuf>, void>::type
TNode::SetAttr(TZtStringBuf name, const T& value) {
TStringStream ss;
ss << value;
SetAttr(name, TZtStringBuf(ss.Str()));
}
inline void TNode::SetAttr(TZtStringBuf name) {
xmlAttr* attr = xmlSetProp(NodePointer, XMLCHAR(name.c_str()), nullptr);
if (!attr) {
THROW(XmlException, "Can't set node empty attribute <"
<< name
<< ">");
}
}
inline void TNode::DelAttr(TZtStringBuf name) {
if (xmlUnsetProp(NodePointer, XMLCHAR(name.c_str())) < 0)
THROW(XmlException, "Can't delete node attribute <"
<< name
<< ">");
}
template <class T>
typename std::enable_if<!std::is_convertible_v<T, TZtStringBuf>, TNode>::type
TNode::AddChild(TZtStringBuf name, const T& value) {
TStringStream ss;
ss << value;
return AddChild(name, TZtStringBuf(ss.Str()));
}
inline TNode TNode::AddChild(TZtStringBuf name, TZtStringBuf value) {
if (IsNull()) {
THROW(XmlException, "addChild [name=" << name << ", value=" << value
<< "]: can't add child to null node");
}
xmlNode* child = nullptr;
if (value.empty()) {
child = xmlNewTextChild(NodePointer, nullptr, XMLCHAR(name.c_str()), nullptr);
} else {
child = xmlNewTextChild(
NodePointer, nullptr, XMLCHAR(name.c_str()), XMLCHAR(value.c_str()));
}
if (!child) {
THROW(XmlException, "addChild [name=" << name << ", value=" << value
<< "]: xmlNewTextChild returned NULL");
}
return TNode(DocPointer, child);
}
template <class T>
typename std::enable_if<!std::is_convertible_v<T, TStringBuf>, TNode>::type
TNode::AddText(const T& value) {
TStringStream ss;
ss << value;
return AddText(ss.Str());
}
inline TNode TNode::AddText(TStringBuf value) {
if (IsNull()) {
THROW(XmlException, "addChild [value=" << value
<< "]: can't add child to null node");
}
xmlNode* child = xmlNewTextLen((xmlChar*)value.data(), value.size());
child = xmlAddChild(NodePointer, child);
if (!child) {
THROW(XmlException, "addChild [value=" << value
<< "]: xmlNewTextChild returned NULL");
}
return TNode(DocPointer, child);
}
}
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