-using System;
-using System.IO;
-using System.Data;
-using System.Text.RegularExpressions;
-using HtmlHelp;
-using HtmlHelp.ChmDecoding;
-
-namespace TechBot.Library
-{
- [Command("api", Help = "!api <apiname>")]
- public class ApiCommand : Command
- {
- private const bool IsVerbose = false;
-
- private HtmlHelpSystem chm;
- private string chmPath;
- private string mainChm;
-
- public ApiCommand()
- {
- Run();
- }
-
- private void WriteIfVerbose(MessageContext context,
- string message)
- {
- if (IsVerbose)
- TechBot.ServiceOutput.WriteLine(context,
- message);
- }
-
- private void Run()
- {
- string CHMFilename = Path.Combine(chmPath, mainChm);
- chm = new HtmlHelpSystem();
- chm.OpenFile(CHMFilename, null);
-
- Console.WriteLine(String.Format("Loaded main CHM: {0}",
- Path.GetFileName(CHMFilename)));
- foreach (string filename in Directory.GetFiles(chmPath))
- {
- if (!Path.GetExtension(filename).ToLower().Equals(".chm"))
- continue;
- if (Path.GetFileName(filename).ToLower().Equals(mainChm))
- continue;
-
- Console.WriteLine(String.Format("Loading CHM: {0}",
- Path.GetFileName(filename)));
- try
- {
- chm.MergeFile(filename);
- }
- catch (Exception ex)
- {
- Console.WriteLine(String.Format("Could not load CHM: {0}. Exception {1}",
- Path.GetFileName(filename),
- ex));
- }
- }
- Console.WriteLine(String.Format("Loaded {0} CHMs",
- chm.FileList.Length));
- }
-
- public override void Handle(MessageContext context)
- {
- if (parameters.Trim().Equals(String.Empty))
- DisplayNoKeyword(context);
- else
- Search(context,
- parameters);
- }
-
- private bool SearchIndex(MessageContext context,
- string keyword)
- {
- if (chm.HasIndex)
- {
- IndexItem item = chm.Index.SearchIndex(keyword,
- IndexType.KeywordLinks);
- if (item != null && item.Topics.Count > 0)
- {
- WriteIfVerbose(context,
- String.Format("Keyword {0} found in index",
- item.KeyWord));
- IndexTopic indexTopic = item.Topics[0] as IndexTopic;
- return DisplayResult(context,
- keyword,
- indexTopic);
- }
- else
- {
- WriteIfVerbose(context,
- String.Format("Keyword {0} not found in index",
- keyword));
- return false;
- }
- }
- else
- return false;
- }
-
- private void SearchFullText(MessageContext context,
- string keyword)
- {
- string sort = "Rating ASC";
- WriteIfVerbose(context,
- String.Format("Searching fulltext database for {0}",
- keyword));
-
- bool partialMatches = false;
- bool titlesOnly = true;
- int maxResults = 100;
- DataTable results = chm.PerformSearch(keyword,
- maxResults,
- partialMatches,
- titlesOnly);
- WriteIfVerbose(context,
- String.Format("results.Rows.Count = {0}",
- results != null ?
- results.Rows.Count.ToString() : "(none)"));
- if (results != null && results.Rows.Count > 0)
- {
- results.DefaultView.Sort = sort;
- if (!DisplayResult(context,
- keyword,
- results))
- {
- DisplayNoResult(context,
- keyword);
- }
- }
- else
- {
- DisplayNoResult(context,
- keyword);
- }
- }
-
- private void Search(MessageContext context,
- string keyword)
- {
- if (!SearchIndex(context,
- keyword))
- SearchFullText(context,
- keyword);
- }
-
- private bool DisplayResult(MessageContext context,
- string keyword,
- IndexTopic indexTopic)
- {
- keyword = keyword.Trim().ToLower();
- string url = indexTopic.URL;
- WriteIfVerbose(context,
- String.Format("URL from index search {0}",
- url));
- string prototype = ExtractPrototype(context,
- url);
- if (prototype == null || prototype.Trim().Equals(String.Empty))
- return false;
- string formattedPrototype = FormatPrototype(prototype);
- TechBot.ServiceOutput.WriteLine(context,
- formattedPrototype);
- return true;
- }
-
- private bool DisplayResult(MessageContext context,
- string keyword,
- DataTable results)
- {
- keyword = keyword.Trim().ToLower();
- for (int i = 0; i < results.DefaultView.Count; i++)
- {
- DataRowView row = results.DefaultView[i];
- string title = row["Title"].ToString();
- WriteIfVerbose(context,
- String.Format("Examining {0}", title));
- if (title.Trim().ToLower().Equals(keyword))
- {
- string location = row["Location"].ToString();
- string rating = row["Rating"].ToString();
- string url = row["Url"].ToString();
- string prototype = ExtractPrototype(context,
- url);
- if (prototype == null || prototype.Trim().Equals(String.Empty))
- continue;
- string formattedPrototype = FormatPrototype(prototype);
- TechBot.ServiceOutput.WriteLine(context,
- formattedPrototype);
- return true;
- }
- }
- return false;
- }
-
- private void DisplayNoResult(MessageContext context,
- string keyword)
- {
- TechBot.ServiceOutput.WriteLine(context,
- String.Format("I don't know about keyword {0}",
- keyword));
- }
-
- private void DisplayNoKeyword(MessageContext context)
- {
- TechBot.ServiceOutput.WriteLine(context,
- "Please give me a keyword.");
- }
-
- private string ReplaceComments(string s)
- {
- return Regex.Replace(s, "//(.+)\r\n", "");
- }
-
- private string ReplaceLineEndings(string s)
- {
- return Regex.Replace(s, "(\r\n)+", " ");
- }
-
- private string ReplaceSpaces(string s)
- {
- return Regex.Replace(s, @" +", " ");
- }
-
- private string ReplaceSpacesBeforeLeftParenthesis(string s)
- {
- return Regex.Replace(s, @"\( ", @"(");
- }
-
- private string ReplaceSpacesBeforeRightParenthesis(string s)
- {
- return Regex.Replace(s, @" \)", @")");
- }
-
- private string ReplaceSemicolon(string s)
- {
- return Regex.Replace(s, @";", @"");
- }
-
- private string FormatPrototype(string prototype)
- {
- string s = ReplaceComments(prototype);
- s = ReplaceLineEndings(s);
- s = ReplaceSpaces(s);
- s = ReplaceSpacesBeforeLeftParenthesis(s);
- s = ReplaceSpacesBeforeRightParenthesis(s);
- s = ReplaceSemicolon(s);
- return s;
- }
-
- private string ExtractPrototype(MessageContext context,
- string url)
- {
- string page = GetPage(context,
- url);
- Match match = Regex.Match(page,
- "<PRE class=\"?syntax\"?>(.+)</PRE>",
- RegexOptions.Multiline |
- RegexOptions.Singleline);
- if (match.Groups.Count > 1)
- {
- string prototype = match.Groups[1].ToString();
- return StripHtml(StripAfterSlashPre(prototype));
- }
-
- return "";
- }
-
- private string StripAfterSlashPre(string html)
- {
- int index = html.IndexOf("</PRE>");
- if (index != -1)
- {
- return html.Substring(0, index);
- }
- else
- return html;
- }
-
- private string StripHtml(string html)
- {
- return Regex.Replace(html, @"<(.|\n)*?>", String.Empty);
- }
-
- private string GetPage(MessageContext context,
- string url)
- {
- string CHMFileName = "";
- string topicName = "";
- string anchor = "";
- CHMStream.CHMStream baseStream;
- if (!chm.BaseStream.GetCHMParts(url, ref CHMFileName, ref topicName, ref anchor))
- {
- baseStream = chm.BaseStream;
- CHMFileName = baseStream.CHMFileName;
- topicName = url;
- anchor = "";
- }
- else
- {
- baseStream = GetBaseStreamFromCHMFileName(context,
- CHMFileName);
- }
-
- if ((topicName == "") || (CHMFileName == "") || (baseStream == null))
- {
- return "";
- }
-
- return baseStream.ExtractTextFile(topicName);
- }
-
- private CHMStream.CHMStream GetBaseStreamFromCHMFileName(MessageContext context,
- string CHMFileName)
- {
- foreach (CHMFile file in chm.FileList)
- {
- WriteIfVerbose(context,
- String.Format("Compare: {0} <> {1}",
- file.ChmFilePath,
- CHMFileName));
- if (file.ChmFilePath.ToLower().Equals(CHMFileName.ToLower()))
- {
- return file.BaseStream;
- }
- }
- WriteIfVerbose(context,
- String.Format("Could not find loaded CHM file in list: {0}",
- CHMFileName));
- return null;
- }
- }
-}
projects / reactos.git / commitdiff