google Translator
2011-08-16 12:56 symphony2010 阅读(1207) 评论(0) 编辑 收藏 举报总算找到一个小巧的google 翻译器。在google translator 中最终要的类
WebResourceProvider
codeproject有详细的描述,大家可以参考
WebResourceProvider 使用
You use WebResourceProvider by deriving your own resource provider class from it, and overriding any of these virtual methods (shown in red in the diagram on the right):
initconstructUrlisPost()-
getPostData() parseContent()moreAvailable()
WebResourceProvider provides an assortment of methods to help parse downloaded content. They are:
Method
Purpose
at
Checks whether current location is at a string
atExact
Case sensitive version of at()
skipTo
Advances current location to next occurence of a string
skipToExact
Case sensitive version of skipTo()
skipBackTo
Retreats current location to previous occurence of a string
skipBackToExact
Case sensitive version of skipBackTo()
extractTo
Extracts text from current location to the start of a string
extractToExact
Case sensitive version of extractTo()
extractToEnd
Extracts text from current location to end of content
getIndex
Returns current location
getLinks
Returns HREF and IMG links in content
resetIndex
Sets current location to start of content
replaceEvery
Replaces every occurence of a string in content with another
removeComments
Removes comments from content
removeScripts
Removes scripts from content
removeEnclosingAnchorTag
Removes anchor tag enclosing a string
removeEnclosingQuotes
Removes quotes enclosing a string
removeHtml
Removes HTML from a string
trim
Removes leading and trailing whitespace from a string
实现原理
看看google translator 里面是怎么用呢
下面是WebResourceProvider类
#region Assembly WebResourceProvider.dll, v1.1.4322 // C:\Documents and Settings\Administrator\桌面\GoogleTranslator\WebResourceProvider.dll #endregion using System; namespace RavSoft { public abstract class WebResourceProvider { public WebResourceProvider(); public string Agent { get; set; } public string Content { get; } public string ErrorMsg { get; } public DateTime FetchTime { get; } public int Pause { get; set; } public string Referer { get; set; } public int Timeout { get; set; } protected virtual bool continueFetching(); public void fetchResource(); protected abstract string getFetchUrl(); protected virtual string getPostData(); protected virtual bool init(); protected virtual void parseContent(); public void reset(); } }
Translator 实现对 WebResourceProvider的继承
// Copyright (c) 2010 Ravi Bhavnani
// License: Code Project Open License
// http://www.codeproject.com/info/cpol10.aspx
using System;
using System.Collections.Generic;
namespace RavSoft.GoogleTranslator
{
/// <summary>
/// Translates text using Google's online language tools.
/// </summary>
public class Translator : RavSoft.WebResourceProvider
{
#region Constructor
/// <summary>
/// Initializes a new instance of the <see cref="Translator"/> class.
/// </summary>
public Translator()
{
this.SourceLanguage = "English";
this.TargetLanguage = "French";
this.Referer = "http://www.google.com";
}
{
#endregion
#region Properties
/// <summary>
/// Gets or sets the source "
/// </summary>
/// <value>The source "</value>
public string SourceLanguage {
get;
set;
}
/// <summary>
/// Gets or sets the target "
/// </summary>
/// <value>The target "</value>
public string TargetLanguage {
get;
set;
}
/// <summary>
/// Gets or sets the source text.
/// </summary>
/// <value>The source text.</value>
public string SourceText {
get;
set;
}
/// <summary>
/// Gets the translation.
/// </summary>
/// <value>The translated text.</value>
public string Translation {
get;
private set;
}
/// <summary>
/// Gets the reverse translation.
/// </summary>
/// <value>The reverse translated text.</value>
public string ReverseTranslation {
get;
private set;
}
#endregion
#region Public methods
/// <summary>
/// Attempts to translate the text.
/// </summary>
public void Translate()
{
// Validate source and target languages
if (string.IsNullOrEmpty (this.SourceLanguage) ||
string.IsNullOrEmpty (this.TargetLanguage) ||
this.SourceLanguage.Trim().Equals (this.TargetLanguage.Trim())) {
throw new Exception ("An invalid source or target language was specified.");
}
// Delegate to base class
this.fetchResource();
}
#endregion
#region WebResourceProvider implementation
/// <summary>
/// Returns the url to be fetched.
/// </summary>
/// <returns>The url to be fetched.</returns>
protected override string getFetchUrl()
{
return "http://translate.google.com/translate_t";
}
/// <summary>
/// Retrieves the POST data (if any) to be sent to the url to be fetched.
/// The data is returned as a string of the form "arg=val[&arg=val]...".
/// </summary>
/// <returns>A string containing the POST data or null if none.</returns>
protected override string getPostData()
{
// Set translation mode
string strPostData = string.Format ("hl=en&ie=UTF8&oe=UTF8submit=Translate&langpair={0}|{1}",
Translator.LanguageEnumToIdentifier (this.SourceLanguage),
Translator.LanguageEnumToIdentifier (this.TargetLanguage));
// Set text to be translated
strPostData += "&text=\"" + this.SourceText + "\"";
return strPostData;
}
/// <summary>
/// Parses the fetched content.
/// </summary>
protected override void parseContent()
{
// Initialize the scraper
this.Translation = string.Empty;
string strContent = this.Content;
RavSoft.StringParser parser = new RavSoft.StringParser (strContent);
// Scrape the translation
string strTranslation = string.Empty;
if (parser.skipToEndOf ("<span id=result_box")) {
if (parser.skipToEndOf ("onmouseout=\"this.style.backgroundColor='#fff'\">")) {
if (parser.extractTo("</span>", ref strTranslation)) {
strTranslation = StringParser.removeHtml (strTranslation);
}
}
}
#region Fix up the translation
int startClean = 0;
int endClean = 0;
int i=0;
while (i < strTranslation.Length) {
if (Char.IsLetterOrDigit (strTranslation[i])) {
startClean = i;
break;
}
i++;
}
i = strTranslation.Length - 1;
while (i > 0) {
char ch = strTranslation[i];
if (Char.IsLetterOrDigit (ch) ||
(Char.IsPunctuation (ch) && (ch != '\"'))) {
endClean = i;
break;
}
i--;
}
this.Translation = strTranslation.Substring (startClean, endClean - startClean + 1).Replace ("\"", "");
#endregion
}
#endregion
#region Private methods
/// <summary>
/// Converts a language to its identifier.
/// </summary>
/// <param name="language">The language."</param>
/// <returns>The identifier or <see cref="string.Empty"/> if none.</returns>
private static string LanguageEnumToIdentifier
(string language)
{
if (Translator._languageModeMap == null) {
Translator._languageModeMap = new Dictionary<string,string>();
Translator._languageModeMap.Add ("Afrikaans", "af");
Translator._languageModeMap.Add ("Albanian", "sq");
Translator._languageModeMap.Add ("Arabic", "ar");
Translator._languageModeMap.Add ("Belarusian", "be");
Translator._languageModeMap.Add ("Bulgarian", "bg");
Translator._languageModeMap.Add ("Catalan", "ca");
Translator._languageModeMap.Add ("Chinese", "zh-CN");
Translator._languageModeMap.Add ("Croatian", "hr");
Translator._languageModeMap.Add ("Czech", "cs");
Translator._languageModeMap.Add ("Danish", "da");
Translator._languageModeMap.Add ("Dutch", "nl");
Translator._languageModeMap.Add ("English", "en");
Translator._languageModeMap.Add ("Estonian", "et");
Translator._languageModeMap.Add ("Filipino", "tl");
Translator._languageModeMap.Add ("Finnish", "fi");
Translator._languageModeMap.Add ("French", "fr");
Translator._languageModeMap.Add ("Galician", "gl");
Translator._languageModeMap.Add ("German", "de");
Translator._languageModeMap.Add ("Greek", "el");
Translator._languageModeMap.Add ("Haitian Creole ALPHA", "ht");
Translator._languageModeMap.Add ("Hebrew", "iw");
Translator._languageModeMap.Add ("Hindi", "hi");
Translator._languageModeMap.Add ("Hungarian", "hu");
Translator._languageModeMap.Add ("Icelandic", "is");
Translator._languageModeMap.Add ("Indonesian", "id");
Translator._languageModeMap.Add ("Irish", "ga");
Translator._languageModeMap.Add ("Italian", "it");
Translator._languageModeMap.Add ("Japanese", "ja");
Translator._languageModeMap.Add ("Korean", "ko");
Translator._languageModeMap.Add ("Latvian", "lv");
Translator._languageModeMap.Add ("Lithuanian", "lt");
Translator._languageModeMap.Add ("Macedonian", "mk");
Translator._languageModeMap.Add ("Malay", "ms");
Translator._languageModeMap.Add ("Maltese", "mt");
Translator._languageModeMap.Add ("Norwegian", "no");
Translator._languageModeMap.Add ("Persian", "fa");
Translator._languageModeMap.Add ("Polish", "pl");
Translator._languageModeMap.Add ("Portuguese", "pt");
Translator._languageModeMap.Add ("Romanian", "ro");
Translator._languageModeMap.Add ("Russian", "ru");
Translator._languageModeMap.Add ("Serbian", "sr");
Translator._languageModeMap.Add ("Slovak", "sk");
Translator._languageModeMap.Add ("Slovenian", "sl");
Translator._languageModeMap.Add ("Spanish", "es");
Translator._languageModeMap.Add ("Swahili", "sw");
Translator._languageModeMap.Add ("Swedish", "sv");
Translator._languageModeMap.Add ("Thai", "th");
Translator._languageModeMap.Add ("Turkish", "tr");
Translator._languageModeMap.Add ("Ukrainian", "uk");
Translator._languageModeMap.Add ("Vietnamese", "vi");
Translator._languageModeMap.Add ("Welsh", "cy");
Translator._languageModeMap.Add ("Yiddish", "yi");
}
string mode = string.Empty;
Translator._languageModeMap.TryGetValue (language, out mode);
return mode;
}
#endregion
#region Fields
/// <summary>
/// The language to translation mode map.
/// </summary>
private static Dictionary<string, string> _languageModeMap;
#endregion
}
}
有了上面的基础，现在想实现一个 特别简单的功能，就是简单的一个空白窗体，当enter 后显示英文的翻译
static void Main(string[] args) { PrintAllIme(); GT.Translator t = new GT.Translator(); Console.WriteLine("请输入你要翻译的内容：(q键退出）"); while ( (t.SourceText = Console.ReadLine())!="q") { t.SourceLanguage = "English"; t.TargetLanguage = "Chinese"; t.Translate(); Console.WriteLine(t.Translation.Substring(0,t.Translation.Length-1)); } }
是不是So easy？（qq1265474050）
