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77 lines
2.1 KiB
77 lines
2.1 KiB
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Web;
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using Web.Core;
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namespace FLocal.Common.BBCodes {
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class UrlProcessor {
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public struct UrlInfo {
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public readonly bool isLocal;
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private readonly string rawRelativeUrl;
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public string relativeUrl {
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get {
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return this.rawRelativeUrl;
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//return HttpUtility.UrlEncode(this.rawRelativeUrl);
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}
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}
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public UrlInfo(bool isLocal, string relativeUrl) {
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this.isLocal = isLocal;
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this.rawRelativeUrl = relativeUrl;
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}
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}
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private static string Safe(string str) {
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return System.Web.HttpUtility.HtmlEncode(str);
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}
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public static UrlInfo Process(string url) {
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if (url.StartsWith("/")) {
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return new UrlInfo(true, url);
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}
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Uri uri;
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try {
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uri = new Uri(url);
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} catch(UriFormatException) {
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throw new Web.Core.FLocalException("wrong url: " + url);
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}
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if (Config.instance.AdditionalHosts.Contains(uri.Host.ToLower()) || uri.Host.ToLower().EndsWith(Config.instance.BaseHost)) {
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return new UrlInfo(true, uri.PathAndQuery);
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} else {
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return new UrlInfo(false, uri.ToString());
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}
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}
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public static string ProcessLink(string link, string title, bool shortenRelative) {
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bool isExternal = true;
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string url;
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if(shortenRelative) {
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var urlInfo = UrlProcessor.Process(link);
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url = urlInfo.relativeUrl;
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isExternal = !urlInfo.isLocal;
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} else {
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var urlInfo = new Uri(link);
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url = urlInfo.ToString();
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}
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if(isExternal) {
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if(title == null) {
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title = Safe(url);
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}
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} else {
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var linkInfo = URL.UrlManager.Parse(url, new System.Collections.Specialized.NameValueCollection(), true);
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if(linkInfo == null) {
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throw new FLocalException("Unable to parse link: " + url);
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}
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url = linkInfo.canonicalFull;
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if(title == null) {
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title = Safe(linkInfo.title);
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}
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}
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string result = String.Format("<a href=\"{0}\"{1}>{2}</a>", url, (isExternal ? " class=\"external\"" : ""), title);
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return result;
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}
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}
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}
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