106 lines
3.3 KiB
C#
106 lines
3.3 KiB
C#
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/*
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Copyright (C) 2014-2019 de4dot@gmail.com
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This file is part of dnSpy
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dnSpy is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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dnSpy is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with dnSpy. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System;
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using System.Net;
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using System.Text;
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namespace dnSpy.Contracts.Text.Formatting {
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sealed class HtmlClipboardFormatWriter {
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readonly StringBuilder sb;
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public int TabSize { get; set; }
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public HtmlClipboardFormatWriter() {
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sb = new StringBuilder();
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TabSize = 4;
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}
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public void WriteRaw(string s) => sb.Append(s);
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public void WriteBr() => sb.Append("<br/>");
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public void WriteSpan(string cssText, string spanText) =>
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WriteSpan(cssText, spanText, 0, spanText.Length);
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public void WriteSpan(string cssText, string spanText, int index, int length) {
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sb.Append("<span");
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if (cssText.Length > 0)
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sb.Append($" style=\"{WebUtility.HtmlEncode(cssText)}\"");
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sb.Append('>');
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WriteString(spanText, index, length);
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sb.Append("</span>");
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}
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static readonly char[] whitespace = new char[] { '\r', '\n', '\u0085', '\u2028', '\u2029', '\t', ' ' };
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void WriteString(string text, int index, int length) {
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for (int i = 0; i < length;) {
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int wsi = text.IndexOfAny(whitespace, index + i, length - i);
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if (wsi < 0) {
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sb.Append(WebUtility.HtmlEncode(text.Substring(index + i, length - i)));
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break;
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}
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if (wsi != index + i)
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sb.Append(WebUtility.HtmlEncode(text.Substring(index + i, wsi - (index + i))));
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switch (text[wsi]) {
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case ' ':
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sb.Append(" ");
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break;
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case '\t':
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for (int j = 0; j < TabSize; j++)
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sb.Append(" ");
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break;
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case '\r':
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break;
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case '\n':
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case '\u0085':
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case '\u2028':
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case '\u2029':
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WriteBr();
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break;
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default:
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throw new InvalidOperationException();
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}
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i = wsi + 1 - index;
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}
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}
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static string GetHeader(int startHtml, int endHtml, int startFragment, int endFragment) => string.Format(
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"Version:0.9" + Environment.NewLine +
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"StartHTML:{0:D10}" + Environment.NewLine +
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"EndHTML:{1:D10}" + Environment.NewLine +
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"StartFragment:{2:D10}" + Environment.NewLine +
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"EndFragment:{3:D10}" + Environment.NewLine,
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startHtml, endHtml, startFragment, endFragment);
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public override string ToString() {
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var header = GetHeader(0, 0, 0, 0);
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var prefix = "<html>" + Environment.NewLine + "<body>" + Environment.NewLine + "<!--StartFragment-->";
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var html = sb.ToString();
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var suffix = "<!--EndFragment-->" + Environment.NewLine + "</body>" + Environment.NewLine + "</html>";
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int startHtml = header.Length;
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int startFragment = startHtml + prefix.Length;
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int endFragment = startFragment + Encoding.UTF8.GetByteCount(html);
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int endHtml = endFragment + suffix.Length;
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return GetHeader(startHtml, endHtml, startFragment, endFragment) + prefix + html + suffix;
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}
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}
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}
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