396 lines
15 KiB
C#
396 lines
15 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Text;
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using UnityEngine;
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namespace FairyGUI.Utils
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{
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/// <summary>
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///
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/// </summary>
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public class HtmlParser
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{
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public static HtmlParser inst = new HtmlParser();
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protected class TextFormat2 : TextFormat
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{
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public bool colorChanged;
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}
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protected List<TextFormat2> _textFormatStack;
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protected int _textFormatStackTop;
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protected TextFormat2 _format;
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protected List<HtmlElement> _elements;
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protected HtmlParseOptions _defaultOptions;
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static List<string> sHelperList1 = new List<string>();
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static List<string> sHelperList2 = new List<string>();
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#if UNITY_2019_3_OR_NEWER
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[RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.SubsystemRegistration)]
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static void InitializeOnLoad()
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{
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inst = new HtmlParser();
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}
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#endif
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public HtmlParser()
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{
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_textFormatStack = new List<TextFormat2>();
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_format = new TextFormat2();
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_defaultOptions = new HtmlParseOptions();
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}
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virtual public void Parse(string aSource, TextFormat defaultFormat, List<HtmlElement> elements, HtmlParseOptions parseOptions)
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{
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if (parseOptions == null)
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parseOptions = _defaultOptions;
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_elements = elements;
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_textFormatStackTop = 0;
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_format.CopyFrom(defaultFormat);
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_format.colorChanged = false;
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int skipText = 0;
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bool ignoreWhiteSpace = parseOptions.ignoreWhiteSpace;
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bool skipNextCR = false;
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string text;
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XMLIterator.Begin(aSource, true);
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while (XMLIterator.NextTag())
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{
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if (skipText == 0)
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{
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text = XMLIterator.GetText(ignoreWhiteSpace);
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if (text.Length > 0)
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{
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if (skipNextCR && text[0] == '\n')
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text = text.Substring(1);
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AppendText(text);
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}
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}
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skipNextCR = false;
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switch (XMLIterator.tagName)
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{
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case "b":
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if (XMLIterator.tagType == XMLTagType.Start)
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{
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PushTextFormat();
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_format.bold = true;
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}
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else
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PopTextFormat();
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break;
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case "i":
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if (XMLIterator.tagType == XMLTagType.Start)
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{
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PushTextFormat();
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_format.italic = true;
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}
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else
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PopTextFormat();
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break;
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case "u":
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if (XMLIterator.tagType == XMLTagType.Start)
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{
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PushTextFormat();
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_format.underline = true;
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}
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else
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PopTextFormat();
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break;
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case "strike":
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if (XMLIterator.tagType == XMLTagType.Start)
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{
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PushTextFormat();
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_format.strikethrough = true;
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}
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else
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PopTextFormat();
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break;
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case "sub":
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{
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if (XMLIterator.tagType == XMLTagType.Start)
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{
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PushTextFormat();
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_format.specialStyle = TextFormat.SpecialStyle.Subscript;
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}
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else
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PopTextFormat();
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}
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break;
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case "sup":
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{
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if (XMLIterator.tagType == XMLTagType.Start)
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{
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PushTextFormat();
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_format.specialStyle = TextFormat.SpecialStyle.Superscript;
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}
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else
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PopTextFormat();
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}
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break;
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case "font":
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if (XMLIterator.tagType == XMLTagType.Start)
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{
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PushTextFormat();
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_format.size = XMLIterator.GetAttributeInt("size", _format.size);
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string color = XMLIterator.GetAttribute("color");
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if (color != null)
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{
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string[] parts = color.Split(',');
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if (parts.Length == 1)
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{
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_format.color = ToolSet.ConvertFromHtmlColor(color);
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_format.gradientColor = null;
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_format.colorChanged = true;
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}
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else
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{
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if (_format.gradientColor == null)
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_format.gradientColor = new Color32[4];
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_format.gradientColor[0] = ToolSet.ConvertFromHtmlColor(parts[0]);
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_format.gradientColor[1] = ToolSet.ConvertFromHtmlColor(parts[1]);
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if (parts.Length > 2)
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{
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_format.gradientColor[2] = ToolSet.ConvertFromHtmlColor(parts[2]);
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if (parts.Length > 3)
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_format.gradientColor[3] = ToolSet.ConvertFromHtmlColor(parts[3]);
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else
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_format.gradientColor[3] = _format.gradientColor[2];
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}
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else
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{
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_format.gradientColor[2] = _format.gradientColor[0];
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_format.gradientColor[3] = _format.gradientColor[1];
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}
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}
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}
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}
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else if (XMLIterator.tagType == XMLTagType.End)
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PopTextFormat();
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break;
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case "br":
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AppendText("\n");
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break;
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case "img":
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if (XMLIterator.tagType == XMLTagType.Start || XMLIterator.tagType == XMLTagType.Void)
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{
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HtmlElement element = HtmlElement.GetElement(HtmlElementType.Image);
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element.FetchAttributes();
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element.name = element.GetString("name");
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element.format.align = _format.align;
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_elements.Add(element);
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}
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break;
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case "a":
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if (XMLIterator.tagType == XMLTagType.Start)
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{
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PushTextFormat();
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_format.underline = _format.underline || parseOptions.linkUnderline;
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if (!_format.colorChanged && parseOptions.linkColor.a != 0)
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_format.color = parseOptions.linkColor;
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HtmlElement element = HtmlElement.GetElement(HtmlElementType.Link);
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element.FetchAttributes();
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element.name = element.GetString("name");
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element.format.align = _format.align;
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_elements.Add(element);
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}
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else if (XMLIterator.tagType == XMLTagType.End)
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{
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PopTextFormat();
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HtmlElement element = HtmlElement.GetElement(HtmlElementType.LinkEnd);
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_elements.Add(element);
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}
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break;
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case "input":
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{
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HtmlElement element = HtmlElement.GetElement(HtmlElementType.Input);
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element.FetchAttributes();
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element.name = element.GetString("name");
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element.format.CopyFrom(_format);
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_elements.Add(element);
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}
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break;
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case "select":
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{
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if (XMLIterator.tagType == XMLTagType.Start || XMLIterator.tagType == XMLTagType.Void)
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{
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HtmlElement element = HtmlElement.GetElement(HtmlElementType.Select);
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element.FetchAttributes();
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if (XMLIterator.tagType == XMLTagType.Start)
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{
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sHelperList1.Clear();
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sHelperList2.Clear();
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while (XMLIterator.NextTag())
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{
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if (XMLIterator.tagName == "select")
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break;
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if (XMLIterator.tagName == "option")
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{
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if (XMLIterator.tagType == XMLTagType.Start || XMLIterator.tagType == XMLTagType.Void)
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sHelperList2.Add(XMLIterator.GetAttribute("value", string.Empty));
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else
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sHelperList1.Add(XMLIterator.GetText());
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}
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}
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element.Set("items", sHelperList1.ToArray());
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element.Set("values", sHelperList2.ToArray());
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}
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element.name = element.GetString("name");
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element.format.CopyFrom(_format);
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_elements.Add(element);
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}
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}
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break;
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case "p":
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if (XMLIterator.tagType == XMLTagType.Start)
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{
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PushTextFormat();
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string align = XMLIterator.GetAttribute("align");
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switch (align)
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{
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case "center":
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_format.align = AlignType.Center;
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break;
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case "right":
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_format.align = AlignType.Right;
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break;
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}
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if (!IsNewLine())
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AppendText("\n");
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}
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else if (XMLIterator.tagType == XMLTagType.End)
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{
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AppendText("\n");
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skipNextCR = true;
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PopTextFormat();
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}
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break;
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case "ui":
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case "div":
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case "li":
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if (XMLIterator.tagType == XMLTagType.Start)
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{
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if (!IsNewLine())
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AppendText("\n");
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}
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else
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{
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AppendText("\n");
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skipNextCR = true;
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}
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break;
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case "html":
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case "body":
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//full html
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ignoreWhiteSpace = true;
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break;
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case "head":
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case "style":
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case "script":
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case "form":
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if (XMLIterator.tagType == XMLTagType.Start)
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skipText++;
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else if (XMLIterator.tagType == XMLTagType.End)
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skipText--;
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break;
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}
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}
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if (skipText == 0)
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{
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text = XMLIterator.GetText(ignoreWhiteSpace);
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if (text.Length > 0)
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{
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if (skipNextCR && text[0] == '\n')
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text = text.Substring(1);
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AppendText(text);
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}
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}
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_elements = null;
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}
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protected void PushTextFormat()
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{
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TextFormat2 tf;
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if (_textFormatStack.Count <= _textFormatStackTop)
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{
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tf = new TextFormat2();
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_textFormatStack.Add(tf);
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}
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else
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tf = _textFormatStack[_textFormatStackTop];
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tf.CopyFrom(_format);
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tf.colorChanged = _format.colorChanged;
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_textFormatStackTop++;
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}
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protected void PopTextFormat()
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{
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if (_textFormatStackTop > 0)
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{
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TextFormat2 tf = _textFormatStack[_textFormatStackTop - 1];
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_format.CopyFrom(tf);
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_format.colorChanged = tf.colorChanged;
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_textFormatStackTop--;
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}
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}
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protected bool IsNewLine()
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{
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if (_elements.Count > 0)
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{
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HtmlElement element = _elements[_elements.Count - 1];
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if (element != null && element.type == HtmlElementType.Text)
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return element.text.EndsWith("\n");
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else
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return false;
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}
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return true;
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}
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protected void AppendText(string text)
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{
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HtmlElement element;
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if (_elements.Count > 0)
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{
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element = _elements[_elements.Count - 1];
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if (element.type == HtmlElementType.Text && element.format.EqualStyle(_format))
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{
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element.text += text;
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return;
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}
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}
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element = HtmlElement.GetElement(HtmlElementType.Text);
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element.text = text;
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element.format.CopyFrom(_format);
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_elements.Add(element);
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}
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}
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}
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