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