1. C++ / Говнокод #6415

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    TagsTree ParseXML(const char file_name[])
{
	ifstream input_file(file_name, std::ios::in);
	string content;
	if(!input_file.good())
	{
		throw "can't open xml";
	}
	while(!input_file.eof())
	{
		char buffer[256];
		input_file.read(buffer, 256);
		streamsize read_count = input_file.gcount();
		content.append(buffer, buffer+read_count);
	}
	input_file.close();
	auto Cleanup = [&content](const string& what_to_del) -> void
	{
		string::size_type pos = content.find(what_to_del);
		while(pos != string::npos)
		{
			content.erase(pos, what_to_del.size());
			pos = content.find(what_to_del, pos);
		}
	};
	Cleanup("\n");
	Cleanup("\t");
	Cleanup(" ");
	string::size_type comment_begin = 0;
	string::size_type comment_end = 0;
	for(;;)
	{
		string::size_type comment_begin = content.find("<!--", comment_end);
		if(comment_begin == string::npos)
		{
			break;
		}
		string::size_type comment_end = content.find(">", comment_begin+3);
		if(comment_end == string::npos)
		{
			throw "invalid xml: no comment closing brace";
		}
		content.erase(comment_begin, comment_end-comment_begin+1);
		comment_end = comment_begin;
	}
	string::size_type header_begin = content.find("<?xml");
	if(header_begin == string::npos)
	{
		throw "invalid xml: no header";
	}
	string::size_type header_end = content.find(">", header_begin+4);
	if(header_end == string::npos)
	{
		throw "invalid xml: no header closing brace";
	}
	content.erase(comment_begin, header_end-header_begin+1);
	auto CutTagAndContent = [](string& from, string& tag, string& content) -> void
	{
		string::size_type position = from.find('>');
		if(position == string::npos)
		{
			throw "invalid xml: no tag closing brace";
		}
		tag = from.substr(1, position-1);
		position = from.find("</"+tag+'>', position);
		if(position == string::npos)
		{
			throw "invalid xml: no closing tag";
		}
		content = from.substr(tag.size()+2, position-tag.size()-2);
		from.erase(0, position+tag.size()+3);
	};
	if(content[0] != '<')
	{
		throw "invalid xml: to root tag";
	}
	TagsTree result;
	CutTagAndContent(content, result.Node.name, result.Node.content);
	TagsTree::children_vectorT children;
	children.push_back(&result);
	do
	{
		for(auto i = children.begin(); i!= children.end(); i++)
		{
			while(!(**i).Node.content.empty())
			{
				if((**i).Node.content[0]!='<')
				{
					break;
				}
				TAG temporary;
				CutTagAndContent((**i).Node.content, temporary.name, temporary.content);
				(**i).Push(temporary);
			}
		}
		children = EnlistChildren(children);
	}
	while(!children.empty());
	return result;
}

    Говнонедопарсер недоговноXML. Дерево тэгов - отдельная кучка.

    Запостил: Xom94ok, 20 Апреля 2011

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