private async Task <DocumentContent> GetContent(IFileInfo fileInfo, IDocumentLanguage lang)
{
var stream = fileInfo.CreateReadStream();
var reader = new StreamReader(stream);
if (await reader.ReadLineAsync() != "---")
{
throw new FormatException(fileInfo.Name + "文件格式错误，属性解释失败。");
}
Dictionary <string, string> attribute = new Dictionary <string, string>();
while (!reader.EndOfStream)
{
var value = await reader.ReadLineAsync();
if (value == "---")
{
break;
}
var data = value.Split(':');
if (data.Length != 2)
{
throw new FormatException(fileInfo.Name + "文件格式错误，属性解释失败。");
}
attribute.Add(data[0].Trim(), data[1].Trim());
}
var title = await reader.ReadLineAsync();
if (title.StartsWith("#"))
{
var i = title.IndexOf(' ');
title = title.Substring(i + 1);
}
var content = await reader.ReadToEndAsync();
return(new DocumentContent(
title,
attribute.ContainsKey("keywords") ? attribute["keywords"].Split(',').ToList() : new List <string>(),
attribute.ContainsKey("authors") ? attribute["authors"].Split(',').Select(t => GetAuthor(t)).ToList() : new List <IDocumentAuthor>(),
fileInfo.LastModified.DateTime,
fileInfo.LastModified.DateTime,
content,
lang));
}
public IDocumentContent GetContent(string path, IDocumentLanguage lang, out IDocumentPage page)
{
if (!IsLoaded)
{
throw new InvalidOperationException("未加载内容。");
}
if (lang == null)
{
throw new ArgumentNullException(nameof(lang));
}
if (!string.IsNullOrEmpty(path))
{
path = path.ToLower();
if (!_Pages.TryGetValue(path, out page))
{
return(null);
}
}
else
{
page = Provider.Pages.First();
}
var content = page.GetContent(lang);
if (content == null)
{
foreach (var prefer in PreferredLanguage)
{
content = page.GetContent(prefer);
if (content != null)
{
break;
}
}
}
return(content);
}
public IDocumentContent GetContent(IDocumentLanguage lang)
{
return(Contents.SingleOrDefault(t => t.Language == lang));
}
public DocumentContent(string title, IList <string> keywords, IList <IDocumentAuthor> authors, DateTime createDate, DateTime editDate, string content, IDocumentLanguage language)
{
if (keywords == null)
{
throw new ArgumentNullException(nameof(keywords));
}
if (authors == null)
{
throw new ArgumentNullException(nameof(authors));
}
Title = title ?? throw new ArgumentNullException(nameof(title));
Keywords = new ReadOnlyCollection <string>(keywords);
Authors = new ReadOnlyCollection <IDocumentAuthor>(authors);
CreateDate = createDate;
EditDate = editDate;
Content = content ?? throw new ArgumentNullException(nameof(content));
Language = language ?? throw new ArgumentNullException(nameof(language));
}
public async Task LoadAsync()
{
_Client = new HttpClient();
_Client.BaseAddress = new Uri("https://api.github.com");
var message = await _Client.GetAsync("/repos/" + Owner + "/" + Repository + "/contents/" + "topic.md");
if (message.StatusCode != System.Net.HttpStatusCode.OK)
{
throw new NotSupportedException("找不到topic.md文件。");
}
var stream = await message.Content.ReadAsStreamAsync();
var reader = new StreamReader(stream);
Title = await reader.ReadLineAsync();
if (!Title.StartsWith("# "))
{
throw new FormatException("topic.md文件格式错误，标题解释失败。");
}
List <IDocumentLanguage> languages = new List <IDocumentLanguage>();
while (true)
{
var value = await reader.ReadLineAsync();
if (string.IsNullOrEmpty(value))
{
break;
}
var data = value.Split(':');
if (data.Length != 2)
{
throw new FormatException("topic.md文件格式错误，语言解释失败。");
}
data[0] = data[0].Trim();
data[1] = data[1].Trim();
if (!data[0].StartsWith("[") || !data[0].EndsWith("]"))
{
throw new FormatException("topic.md文件格式错误，语言解释失败。");
}
languages.Add(new DocumentLanguage(data[1], data[0].Substring(1, data[0].Length - 2)));
}
Languages = new ReadOnlyCollection <IDocumentLanguage>(languages);
DefaultLanguage = languages[0];
int current = 0;
int space, start, end;
Stack <List <IDocumentPage> > childrenStack = new Stack <List <IDocumentPage> >();
var root = new List <IDocumentPage>();
Pages = new ReadOnlyCollection <IDocumentPage>(root);
childrenStack.Push(root);
while (!reader.EndOfStream)
{
var value = await reader.ReadLineAsync();
if (string.IsNullOrEmpty(value))
{
continue;
}
if (!value.StartsWith("#"))
{
throw new FormatException("topic.md文件格式错误，目录解释失败。");
}
space = value.IndexOf(' ');
if (space == -1 || space > ++current)
{
throw new FormatException("topic.md文件格式错误，目录解释失败。");
}
if (space != current)
{
var skip = current - space;
for (int i = 0; i < skip; i++)
{
childrenStack.Pop();
current--;
}
}
start = value.IndexOf('[', space + 1);
if (start == -1)
{
throw new FormatException("topic.md文件格式错误，目录解释失败。");
}
end = value.IndexOf(']', start + 1);
if (end == -1)
{
throw new FormatException("topic.md文件格式错误，目录解释失败。");
}
string name = value.Substring(start + 1, end - start - 1);
start = value.IndexOf('(', end + 1);
if (start == -1)
{
throw new FormatException("topic.md文件格式错误，目录解释失败。");
}
end = value.IndexOf(')', start + 1);
if (end == -1)
{
throw new FormatException("topic.md文件格式错误，目录解释失败。");
}
string path = value.Substring(start + 1, end - start - 1);
if (!path.EndsWith(".md"))
{
throw new FormatException("topic.md文件格式错误，目录解释失败。");
}
List <IDocumentContent> contents = await GetContents(path);
List <IDocumentPage> children = new List <IDocumentPage>();
DocumentPage page = new DocumentPage(name, contents, children);
childrenStack.Peek().Add(page);
childrenStack.Push(children);
}
message.Dispose();
}