TinyXmlReader
TinyXmlReader
You can use Mono's System.Xml for handling XML files but this requires including the System.Xml dll into your Unity program which increases its file size by about 1 MB. Not to mention the lack of documentation for using System.Xml on UnityScript.
I found rolling my own XML parser was easier. Note however that this is a really simple XML parser, it doesn't recognize attributes (I did not implement it simply because I don't use XML attributes).
TinyXmlReader.cs
using UnityEngine; using System.Collections; public class TinyXmlReader { private string xmlString = ""; private int idx = 0; public TinyXmlReader(string newXmlString) { xmlString = newXmlString; } public string tagName = ""; public bool isOpeningTag = false; public string content = ""; // properly looks for the next index of _c, without stopping at line endings, allowing tags to be break lines int IndexOf(char _c, int _i) { int i = _i; while (i < xmlString.Length) { if (xmlString[i] == _c) return i; ++i; } return -1; } public bool Read() { if (idx > -1) idx = xmlString.IndexOf("<", idx); if (idx == -1) { return false; } ++idx; // skip attributes, don't include them in the name! int endOfTag = IndexOf('>', idx); int endOfName = IndexOf(' ', idx); if ((endOfName == -1) || (endOfTag < endOfName)) { endOfName = endOfTag; } if (endOfTag == -1) { return false; } tagName = xmlString.Substring(idx, endOfName - idx); idx = endOfTag; // check if a closing tag if (tagName.StartsWith("/")) { isOpeningTag = false; tagName = tagName.Remove(0, 1); // remove the slash } else { isOpeningTag = true; } // if an opening tag, get the content if (isOpeningTag) { int startOfCloseTag = xmlString.IndexOf("<", idx); if (startOfCloseTag == -1) { return false; } content = xmlString.Substring(idx+1, startOfCloseTag-idx-1); content = content.Trim(); } return true; } // returns false when the endingTag is encountered public bool Read(string endingTag) { bool retVal = Read(); if (tagName == endingTag && !isOpeningTag) { retVal = false; } return retVal; } }
TinyXmlReader.js
class TinyXmlReader { private var xmlString = ""; private var idx = 0; function TinyXmlReader(aXmlString : String) { xmlString = aXmlString; } var tagName = ""; var isOpeningTag = false; var content = ""; function Read() : boolean { idx = xmlString.IndexOf("<", idx); if (idx == -1) { return false; } ++idx; var endOfTag = xmlString.IndexOf(">", idx); if (endOfTag == -1) { return false; } tagName = xmlString.Substring(idx, endOfTag-idx); idx = endOfTag; // check if a closing tag if (tagName.StartsWith("/")) { isOpeningTag = false; tagName = tagName.Remove(0, 1); // remove the slash } else { isOpeningTag = true; } // if an opening tag, get the content if (isOpeningTag) { var startOfCloseTag = xmlString.IndexOf("<", idx); content = xmlString.Substring(idx+1, startOfCloseTag-idx-1); content = content.Trim(); } return true; } // returns false when the endingTag is encountered function Read(endingTag : String) : boolean { var retVal = Read(); if (tagName == endingTag && !isOpeningTag) { retVal = false; } return retVal; } }
Usage
Here I provide example code on how to use the TinyXmlReader.
private var text : String; var skin : GUISkin; function OnGUI() { GUILayout.Label(text, skin.label); } function Start() { var xmlText = System.IO.File.ReadAllText(Application.dataPath + "/Rifleman.xml"); var reader = TinyXmlReader(xmlText); while (reader.Read()) { if (reader.isOpeningTag) { text += (reader.tagName + " \"" + reader.content + "\"\n"); } if (reader.tagName == "Skills" && reader.isOpeningTag) { while(reader.Read("Skills")) // read as long as not encountering the closing tag for Skills { if (reader.isOpeningTag) { text += ("Skill: " + reader.tagName + " \"" + reader.content + "\"\n"); } } } } }
Plus, here's the XML file used for the example code: <xml> <?xml version="1.0" encoding="UTF-8"?> <Unit> <Type>Rifleman</Type> <Label>ライフル銃兵 é (для Windows тоже!)</Label> <MaxHP>100</MaxHP> <SightRange>10</SightRange> <Skills> <UnitMovement> <Label>Move</Label> <Animation>move</Animation> <Range>10</Range> <Speed>6</Speed> </UnitMovement> <SimpleAttack> <Label>Attack</Label> <Animation>shoot</Animation> <Range>10</Range> <Damage>20</Damage> <AttackTime>0.348</AttackTime> <AttackType>Ranged</AttackType> </SimpleAttack> <Grenade> <Label>Throw Grenade</Label> <Animation>shoot</Animation> <Range>10</Range> <Damage>20</Damage> <AttackTime>0.348</AttackTime> <ExplosionRadius>5</ExplosionRadius> <NoOfUses>3</NoOfUses> </Grenade> </Skills> <Pahabol>oompa loompa doompity doo, we wouldn't hit that and neither should you</Pahabol> </Unit> </xml>
It produces this output:
