/// <summary>
/// 将XML文档以问题形式读取。
/// </summary>
/// <param name="xdoc">XML文档</param>
/// <param name="web">是否读取网页端需要的数据</param>
/// <param name="judge">是否读取评测端需要的数据</param>
/// <returns>问题</returns>
public static ProblemSet ToProblem(this XDocument xdoc, bool web, bool judge)
{
var doc = xdoc.Root;
var prob = new ProblemSet();
prob.Title = doc.Element("title").Value;
prob.ProblemId = int.Parse(doc.Element("id").Value);
prob.MemoryLimit = int.Parse(doc.Element("memory_limit").Value);
prob.ExecuteTimeLimit = int.Parse(doc.Element("time_limit").Value);
prob.RunScript = doc.Element("run_script").Value;
prob.CompareScript = doc.Element("compare_script").Value;
if (web)
{
prob.Description = doc.Element("description").Value;
prob.InputHint = doc.Element("input").Value;
prob.OutputHint = doc.Element("output").Value;
prob.Author = doc.Element("author").Value;
prob.HintAndNote = doc.Element("hint").Value;
// 读取所有测试用例
var tc = doc.Element("samples");
foreach (XElement group in tc.Elements())
prob.Samples.Add(new TestCase(group));
}
if (judge)
{
var tc = doc.Element("test_cases");
foreach (XElement group in tc.Elements())
prob.TestCases.Add(new TestCase(group));
}
return prob;
}
/// <summary>
/// 将问题以XML文档形式保存。
/// </summary>
/// <param name="problem">问题</param>
/// <returns>XML文档</returns>
public static XDocument ToXml(this ProblemSet problem)
{
var doc = new XDocument();
doc.Add(new XElement("problem"));
var root = doc.Root;
root.Add(new XElement("id", problem.ProblemId));
root.Add(new XElement("title", new XCData(problem.Title)));
root.Add(new XElement("description", new XCData(problem.Description)));
root.Add(new XElement("input", new XCData(problem.InputHint)));
root.Add(new XElement("output", new XCData(problem.OutputHint)));
root.Add(new XElement("author", new XCData(problem.Author)));
root.Add(new XElement("time_limit", problem.ExecuteTimeLimit));
root.Add(new XElement("memory_limit", problem.MemoryLimit));
root.Add(new XElement("run_script", problem.RunScript));
root.Add(new XElement("compare_script", problem.CompareScript));
root.Add(new XElement("samples"));
var samples = root.Element("samples");
foreach (var tc in problem.Samples)
samples.Add(tc.ToXml());
root.Add(new XElement("test_cases"));
var test_cases = root.Element("test_cases");
foreach (var tc in problem.TestCases)
test_cases.Add(tc.ToXml());
root.Add(new XElement("hint", new XCData(problem.HintAndNote)));
return doc;
}
