Mercurial > repos > IBDev-IBBoard.WarFoundry.API
annotate api/Factories/Xml/WarFoundryXmlFactory.cs @ 41:422ddd5fedd1
Re #48 - Require schemas to validate
* Restructure schema caching so that it warns instead of exceptioning - allows a missing schema to not kill an unrelated file load
* Fix exception handling for GameSystems while working out where exceptions were being caught
Current situation: Missing Race/System schema stops file loading but missing cat/core schema doesn't
| author | IBBoard <dev@ibboard.co.uk> |
|---|---|
| date | Sat, 21 Mar 2009 20:52:26 +0000 |
| parents | 3664eee50390 |
| children | d0d44434b557 |
| rev | line source |
|---|---|
| 15 | 1 // This file (WarFoundryXmlFactory.cs) is a part of the IBBoard.WarFoundry.API project and is copyright 2009 IBBoard. |
| 0 | 2 // |
| 15 | 3 // The file and the library/program it is in are licensed under the GNU LGPL license, either version 3 of the License or (at your option) any later version. Please see COPYING.LGPL for more information and the full license. |
| 0 | 4 |
| 5 using System; | |
| 6 using System.IO; | |
| 7 using System.Xml; | |
| 8 using System.Xml.Schema; | |
| 34 | 9 using System.Xml.XPath; |
| 0 | 10 using System.Collections.Generic; |
| 11 using System.Text; | |
| 12 using IBBoard; | |
| 13 using IBBoard.IO; | |
| 14 using IBBoard.Lang; | |
| 15 using IBBoard.Logging; | |
| 16 using IBBoard.Xml; | |
| 17 using IBBoard.WarFoundry.API.Requirements; | |
| 18 using IBBoard.WarFoundry.API.Objects; | |
| 19 using ICSharpCode.SharpZipLib.Zip; | |
| 20 | |
| 21 namespace IBBoard.WarFoundry.API.Factories.Xml | |
| 22 { | |
| 23 /// <summary> | |
| 10 | 24 /// The WarFoundryXmlFactory loads WarFoundry classes from the native "XML in a zip" file format. Files are validated using the schema for the file type, so structurally invalid files should be identified at initial load. |
| 0 | 25 /// </summary> |
| 26 public class WarFoundryXmlFactory : AbstractNativeWarFoundryFactory | |
| 27 { | |
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28 private static WarFoundryXmlFactory factory; |
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29 private XmlReaderSettings settings; |
| 0 | 30 private Dictionary<IWarFoundryObject, XmlDocument> extraData = new Dictionary<IWarFoundryObject, XmlDocument>(); |
| 31 | |
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32 public static AbstractNativeWarFoundryFactory GetFactory() |
| 0 | 33 { |
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34 if (factory == null) |
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35 { |
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36 factory = new WarFoundryXmlFactory(); |
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37 } |
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38 |
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39 return factory; |
| 0 | 40 } |
| 41 | |
| 42 protected WarFoundryXmlFactory() : base() | |
| 43 { | |
| 37 | 44 //Hide constructor |
| 0 | 45 } |
| 46 | |
| 47 protected override bool CheckCanFindArmyFileContent(ZipFile file) | |
| 48 { | |
| 49 return file.FindEntry("data.armyx", true) > -1; | |
| 50 } | |
| 51 | |
| 52 protected override bool CheckCanFindSystemFileContent(ZipFile file) | |
| 53 { | |
| 54 return file.FindEntry("data.systemx", true) > -1; | |
| 55 } | |
| 56 | |
| 57 protected override bool CheckCanFindRaceFileContent(ZipFile file) | |
| 58 { | |
| 59 return file.FindEntry("data.racex", true) > -1; | |
| 60 } | |
| 61 | |
| 62 protected XmlElement GetRootElementFromStream(Stream stream, WarFoundryXmlElementName elementName) | |
| 63 { | |
| 64 XmlDocument doc = CreateXmlDocumentFromStream(stream); | |
| 65 XmlElement elem = (XmlElement)doc.LastChild; | |
| 66 | |
| 67 if (!elem.Name.Equals(elementName.Value)) | |
| 68 { | |
| 69 throw new InvalidFileException(String.Format("Root element of XML was not valid. Expected {0} but got {1}", elementName.Value, elem.Name)); | |
| 70 } | |
| 71 | |
| 72 return elem; | |
| 73 } | |
| 74 | |
| 75 protected override Stream GetArmyDataStream(ZipFile file) | |
| 76 { | |
| 77 return file.GetInputStream(file.FindEntry("data.armyx", true)); | |
| 78 } | |
| 79 | |
| 80 protected override Army CreateArmyFromStream (ZipFile file, Stream dataStream) | |
| 81 { | |
| 82 XmlElement elem = GetRootElementFromStream(dataStream, WarFoundryXmlElementName.ARMY_ELEMENT); | |
| 83 return CreateArmyFromElement(file, elem); | |
| 84 } | |
| 85 | |
| 86 private Army CreateArmyFromElement(ZipFile file, XmlElement elem) | |
| 87 { | |
| 88 string name = elem.GetAttribute("name"); | |
| 89 string systemID = elem.GetAttribute("gameSystem"); | |
| 90 GameSystem system = WarFoundryLoader.GetDefault().GetGameSystem(systemID); | |
| 91 string raceID = elem.GetAttribute("race"); | |
| 92 Race race = WarFoundryLoader.GetDefault().GetRace(system, raceID); | |
| 93 string pointsString = elem.GetAttribute("maxPoints"); | |
| 94 int points = 0; | |
| 95 | |
| 96 try | |
| 97 { | |
| 98 points = int.Parse(pointsString); | |
| 99 } | |
| 100 catch(FormatException) | |
| 101 { | |
| 102 throw new FormatException("Attribute 'maxPoints' of army '"+name+"' was not a valid number"); | |
| 103 } | |
| 104 | |
| 10 | 105 Army army = new Army(race, name, points, file); |
| 0 | 106 extraData[army] = elem.OwnerDocument; |
| 107 return army; | |
| 108 } | |
| 109 | |
| 110 protected override Stream GetGameSystemDataStream (ZipFile file) | |
| 111 { | |
| 112 return file.GetInputStream(file.FindEntry("data.systemx", true)); | |
| 113 } | |
| 114 | |
| 115 protected override GameSystem CreateGameSystemFromStream (ZipFile file, Stream dataStream) | |
| 116 { | |
| 117 XmlElement elem = GetRootElementFromStream(dataStream, WarFoundryXmlElementName.SYSTEM_ELEMENT); | |
| 118 LogNotifier.Debug(GetType(), "Create GameSystem"); | |
| 119 return CreateSystemFromElement(file, elem); | |
| 120 } | |
| 121 | |
| 122 private GameSystem CreateSystemFromElement(ZipFile file, XmlElement elem) | |
| 123 { | |
| 124 string id = elem.GetAttribute("id"); | |
| 125 string name = elem.GetAttribute("name"); | |
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126 GameSystem system = new GameSystem(id, name, this); |
| 0 | 127 extraData[system] = elem.OwnerDocument; |
| 128 return system; | |
| 129 } | |
| 130 | |
| 131 protected override Stream GetRaceDataStream (ZipFile file) | |
| 132 { | |
| 133 return file.GetInputStream(file.FindEntry("data.racex", true)); | |
| 134 } | |
| 135 | |
| 136 protected override Race CreateRaceFromStream (ZipFile file, Stream dataStream) | |
| 137 { | |
| 138 XmlElement elem = GetRootElementFromStream(dataStream, WarFoundryXmlElementName.RACE_ELEMENT); | |
| 139 LogNotifier.Debug(GetType(), "Create Race"); | |
| 140 return CreateRaceFromElement(file, elem); | |
| 141 } | |
| 142 | |
| 143 private Race CreateRaceFromElement(ZipFile file, XmlElement elem) | |
| 144 { | |
| 145 string id = elem.GetAttribute("id"); | |
| 146 string subid = elem.GetAttribute("subid"); | |
| 147 string systemID = elem.GetAttribute("system"); | |
| 148 string name = elem.GetAttribute("name"); | |
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149 Race race = new Race(id, subid, name, systemID, this); |
| 0 | 150 extraData[race] = elem.OwnerDocument; |
| 151 return race; | |
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152 } |
| 0 | 153 |
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154 public override void CompleteLoading(IWarFoundryStagedLoadObject obj) |
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155 { |
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156 LogNotifier.DebugFormat(GetType(), "Complete loading of {0} with ID {1}", obj.GetType().Name, obj.ID); |
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157 |
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158 if (obj is GameSystem) |
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159 { |
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160 CompleteLoading((GameSystem)obj); |
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161 } |
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162 else if (obj is Race) |
| 0 | 163 { |
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164 CompleteLoading((Race)obj); |
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165 } |
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166 } |
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167 |
| 10 | 168 public XmlNode GetExtraData(IWarFoundryObject obj) |
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169 { |
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170 XmlDocument extra = null; |
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171 extraData.TryGetValue(obj, out extra); |
| 10 | 172 XmlNode node = null; |
| 173 | |
| 174 if (extra !=null) | |
| 175 { | |
| 176 node = extra.LastChild; | |
| 177 } | |
| 178 | |
| 179 return node; | |
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180 } |
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181 |
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182 public void CompleteLoading(GameSystem system) |
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183 { |
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184 if (system.IsFullyLoaded) |
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185 { |
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186 LogNotifier.DebugFormat(GetType(), "Object of type GameSystem with ID {0} is already fully loaded", system.ID); |
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187 return; |
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188 } |
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189 |
| 34 | 190 if (system.IsLoading) |
| 191 { | |
| 192 LogNotifier.WarnFormat(GetType(), "Object of type GameSystem with ID {0} is already being loaded", system.ID); | |
| 193 return; | |
| 194 } | |
| 195 | |
| 196 system.SetAsLoading(); | |
| 197 | |
| 10 | 198 XmlNode elem = GetExtraData(system); |
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199 XmlNode catsElem = elem.FirstChild; |
| 10 | 200 LoadCategoriesForSystem(system, elem); |
| 201 | |
| 202 XmlElement statsElem = (XmlElement)catsElem.NextSibling; | |
| 203 LoadSystemStatsFromElement(statsElem, system); | |
| 204 string defaultStatsID = statsElem.GetAttribute("defaultStats"); | |
| 205 | |
| 206 LogNotifier.DebugFormat(GetType(), "Completed loading of GameSystem with ID {0}", system.Name); | |
| 207 system.StandardSystemStatsID = defaultStatsID; | |
| 208 system.SetAsFullyLoaded(); | |
| 209 } | |
| 210 | |
| 211 private void LoadCategoriesForSystem(GameSystem system, XmlNode elem) | |
| 212 { | |
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213 WarFoundryObject tempObj; |
| 10 | 214 |
| 215 foreach (XmlElement cat in elem.SelectNodes("//"+WarFoundryXmlElementName.CATEGORY_ELEMENT.Value)) | |
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216 { |
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217 tempObj = CreateObjectFromElement(cat); |
| 0 | 218 |
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219 if (tempObj is Category) |
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220 { |
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221 system.AddCategory((Category)tempObj); |
| 0 | 222 } |
| 223 else | |
| 224 { | |
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225 LogNotifier.WarnFormat(GetType(), "Object for string {0} was not of type Category", cat.OuterXml); |
| 0 | 226 } |
| 227 } | |
| 228 } | |
| 229 | |
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230 public void CompleteLoading(Race race) |
| 0 | 231 { |
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232 if (race.IsFullyLoaded) |
| 0 | 233 { |
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234 LogNotifier.DebugFormat(GetType(), "Object of type Race with ID {0} is already fully loaded", race.ID); |
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235 return; |
| 0 | 236 } |
| 237 | |
| 34 | 238 if (race.IsLoading) |
| 239 { | |
| 240 LogNotifier.WarnFormat(GetType(), "Object of type Race with ID {0} is already being loaded", race.ID); | |
| 241 return; | |
| 242 } | |
| 243 | |
| 244 race.SetAsLoading(); | |
| 245 | |
| 10 | 246 XmlNode elem = GetExtraData(race); |
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247 XmlNode colNode = elem.FirstChild; |
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248 |
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249 foreach (XmlElement node in colNode.ChildNodes) |
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250 { |
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251 UnitType type = CreateUnitTypeFromElement(node, race, race.GameSystem); |
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252 race.AddUnitType(type); |
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253 } |
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254 |
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255 colNode = colNode.NextSibling; |
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256 |
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257 if (colNode!=null && colNode.Name == WarFoundryXmlElementName.CATEGORIES_ELEMENT.Value) |
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258 { |
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259 foreach (XmlElement node in colNode.ChildNodes) |
| 0 | 260 { |
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261 race.AddCategory(CreateCategoryFromElement(node)); |
| 0 | 262 } |
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263 |
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264 colNode = colNode.NextSibling; |
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265 } |
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266 |
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267 if (colNode!=null && colNode.Name == WarFoundryXmlElementName.RACE_EQUIPMENT_ITEMS_ELEMENT.Value) |
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268 { |
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269 foreach (XmlElement node in colNode.ChildNodes) |
| 0 | 270 { |
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271 EquipmentItem item = CreateEquipmentItemFromElement(node, race); |
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272 race.AddEquipmentItem(item); |
| 0 | 273 } |
| 274 } | |
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275 |
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276 Dictionary<string, Ability> raceAbilities = new Dictionary<string, Ability>(); |
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277 //TODO: Load abilities |
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278 race.SetAbilities(raceAbilities); |
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279 race.SetAsFullyLoaded(); |
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280 LogNotifier.DebugFormat(GetType(), "Completed loading of Race with ID {0}", race.Name); |
| 0 | 281 } |
| 282 | |
| 283 protected XmlDocument CreateXmlDocumentFromStream(Stream stream) | |
| 284 { | |
| 285 XmlDocument doc = new XmlDocument(); | |
|
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286 XmlReader reader = XmlReader.Create(stream, GetReaderSettings()); |
| 0 | 287 |
| 288 try | |
| 289 { | |
| 290 doc.Load(reader); | |
| 291 } | |
| 292 //Don't catch XMLSchemaExceptions - let them get thrown out | |
| 293 finally | |
| 294 { | |
| 295 reader.Close(); | |
| 296 } | |
| 297 | |
| 298 return doc; | |
|
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299 } |
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300 |
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301 /// <summary> |
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302 /// Lazy-getter for XML reader settings. May throw a <see cref="InvalidDataException"/> if there is a problem with the translation schema. |
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303 /// </summary> |
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304 /// <returns> |
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305 /// A <see cref="XmlReaderSettings"/> with the default values for validating the translation document against the translation schema |
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306 /// </returns> |
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307 private XmlReaderSettings GetReaderSettings() |
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308 { |
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309 if (settings == null) |
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310 { |
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311 settings = new XmlReaderSettings(); |
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312 settings.ValidationType = ValidationType.Schema; |
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313 settings.ValidationFlags = XmlSchemaValidationFlags.ReportValidationWarnings; |
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314 settings.ProhibitDtd = true; |
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315 settings.ValidationEventHandler+= new ValidationEventHandler(ValidationEventMethod); |
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316 XmlSchemaSet cache = new XmlSchemaSet(); |
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317 string path = IBBoard.Constants.ExecutablePath + "/dtds/"; |
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318 string nsBase = "http://ibboard.co.uk/warfoundry/"; |
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319 AddSchemaToCache(cache, nsBase + "core", path + "warfoundry-core.xsd"); |
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320 AddSchemaToCache(cache, nsBase + "cats", path + "warfoundry-cats.xsd"); |
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321 AddSchemaToCache(cache, nsBase + "race", path + "race.xsd"); |
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322 AddSchemaToCache(cache, nsBase + "system", path + "system.xsd"); |
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323 settings.Schemas.Add(cache); |
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324 } |
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325 |
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326 return settings; |
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327 } |
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328 |
|
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329 private void AddSchemaToCache(XmlSchemaSet cache, string xmlNamespace, string schemaLocation) |
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330 { |
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331 try |
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332 { |
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333 cache.Add(xmlNamespace, schemaLocation); |
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334 } |
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335 catch (IOException ex) |
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336 { |
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337 LogNotifier.Warn(GetType(), "Problem reading schema: " + ex.Message, ex); |
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338 } |
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339 catch (XmlSchemaException ex) |
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340 { |
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341 LogNotifier.Warn(GetType(), "Problem validating schema for WarFoundry data: " + ex.Message, ex); |
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342 } |
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343 catch (XmlException ex) |
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344 { |
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345 LogNotifier.Warn(GetType(), "Problem reading data for schema: " + ex.Message, ex); |
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346 } |
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347 } |
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348 |
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349 private void ValidationEventMethod(object sender, ValidationEventArgs e) |
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350 { |
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351 throw new InvalidDataException("Problem validating against schema for WarFoundry data: " + e.Exception.Message, e.Exception); |
| 0 | 352 } |
| 353 | |
| 354 private WarFoundryObject CreateObjectFromElement(XmlElement elem) | |
| 355 { | |
| 356 WarFoundryObject obj = null; | |
| 357 LogNotifier.DebugFormat(GetType(), "Create object for <{0}>", elem.Name); | |
| 358 | |
| 359 if (elem.Name.Equals(WarFoundryXmlElementName.CATEGORY_ELEMENT.Value)) | |
| 360 { | |
| 361 LogNotifier.Debug(GetType(), "Create Category"); | |
| 362 obj = CreateCategoryFromElement(elem); | |
| 363 } | |
| 364 else | |
| 365 { | |
| 366 LogNotifier.Debug(GetType(), "No match"); | |
| 367 } | |
| 368 | |
| 369 return obj; | |
| 370 } | |
| 371 | |
| 372 private Category CreateCategoryFromElement(XmlElement elem) | |
| 373 { | |
| 374 string id = elem.GetAttribute("id"); | |
| 375 string name = elem.GetAttribute("name"); | |
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376 int minPc, maxPc, minPts, maxPts, minChoices, maxChoices, baseValue, incValue, incAmount; |
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377 minPc = GetIntValueFromAttribute(elem, "minPercentage"); |
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378 maxPc = GetIntValueFromAttribute(elem, "maxPercentage"); |
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379 minPts = GetIntValueFromAttribute(elem, "minPoints"); |
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380 maxPts = GetIntValueFromAttribute(elem, "maxPoints"); |
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381 minChoices = GetIntValueFromAttribute(elem, "minChoices"); |
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382 maxChoices = GetIntValueFromAttribute(elem, "maxChoices"); |
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383 baseValue = GetIntValueFromAttribute(elem, "baseValue"); |
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384 incValue = GetIntValueFromAttribute(elem, "incValue"); |
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385 incAmount = GetIntValueFromAttribute(elem, "incAmount"); |
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386 |
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387 return new Category(id, name, minPts, maxPts, minPc, maxPc, minChoices, maxChoices, baseValue, incValue, incAmount); |
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388 } |
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389 |
| 10 | 390 private int GetIntValueFromAttribute(XmlElement elem, string attributeName) |
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391 { |
|
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392 try |
| 39 | 393 { |
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394 return int.Parse(elem.GetAttribute(attributeName)); |
| 39 | 395 } |
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396 catch(FormatException) |
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397 { |
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398 throw new FormatException(String.Format("Attribute '{0}' of {1} with ID {2} was not a valid number", attributeName, elem.Name, elem.GetAttribute("id"))); |
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399 } |
| 0 | 400 } |
| 401 | |
| 402 private UnitType CreateUnitTypeFromElement(XmlElement elem, Race parentRace, GameSystem system) | |
| 403 { | |
| 404 string id = elem.GetAttribute("id"); | |
| 405 string name = elem.GetAttribute("typeName"); | |
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406 UnitType type = new UnitType(id, name, parentRace); |
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407 type.MinNumber = GetIntValueFromAttribute(elem, "minNum"); |
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408 type.MaxNumber = GetIntValueFromAttribute(elem, "maxNum"); |
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409 type.MinSize = GetIntValueFromAttribute(elem, "minSize"); |
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410 type.MaxSize = GetIntValueFromAttribute(elem, "maxSize"); |
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411 //TODO: Add base size |
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412 type.CostPerTrooper = GetIntValueFromAttribute(elem, "points"); |
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413 type.BaseUnitCost = GetIntValueFromAttribute(elem, "unitPoints"); |
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414 string mainCatID = elem.GetAttribute("cat"); |
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415 type.MainCategory = parentRace.GetCategory(mainCatID); |
| 34 | 416 XmlNodeList nodes = elem.SelectNodes("stats"); |
| 417 XmlNode node = nodes.Item(0); | |
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418 type.UnitStats = ParseUnitStats((XmlElement)node, system); |
| 0 | 419 //TODO: Add unit requirements |
| 34 | 420 LogNotifier.Debug(GetType(), "Loaded "+type.Name); |
| 0 | 421 return type; |
| 422 } | |
| 423 | |
| 424 private Stats ParseUnitStats(XmlElement elem, GameSystem system) | |
| 425 { | |
| 426 List<Stat> statsList = new List<Stat>(); | |
| 427 String statsID = elem.GetAttribute("statSet"); | |
| 428 SystemStats statsSet; | |
| 429 | |
| 430 if (statsID == "") | |
| 431 { | |
| 432 statsSet = system.StandardSystemStats; | |
| 433 } | |
| 434 else | |
| 435 { | |
| 6 | 436 statsSet = system.GetSystemStatsForID(statsID); |
| 0 | 437 } |
| 438 | |
| 439 Stats stats = new Stats(statsSet); | |
| 440 | |
| 441 foreach (XmlElement stat in elem.ChildNodes) | |
| 442 { | |
| 443 String statID = stat.GetAttribute("name"); | |
| 444 StatSlot slot = statsSet[statID]; | |
| 445 | |
| 446 if (slot!=null) | |
| 447 { | |
| 448 statsList.Add(new Stat(slot, stat.InnerText)); | |
| 449 } | |
| 450 else | |
| 451 { | |
| 452 throw new InvalidFileException("The stat "+statID+" was not found in stats set "+statsID); | |
| 453 } | |
| 454 } | |
| 455 | |
| 456 stats.SetStats(statsList); | |
| 457 | |
| 458 return stats; | |
| 459 } | |
| 460 | |
| 6 | 461 private void LoadSystemStatsFromElement(XmlElement elem, GameSystem system) |
| 0 | 462 { |
| 463 foreach (XmlElement stats in elem.ChildNodes) | |
| 464 { | |
| 465 SystemStats sysStats = CreateSystemStatsFromElement(stats); | |
| 6 | 466 system.AddSystemStats(sysStats); |
| 0 | 467 } |
| 468 } | |
| 469 | |
| 470 private SystemStats CreateSystemStatsFromElement(XmlElement elem) | |
| 471 { | |
| 472 List<StatSlot> slots = new List<StatSlot>(); | |
| 473 string id = elem.GetAttribute("id"); | |
| 474 | |
| 475 foreach (XmlElement slot in elem.ChildNodes) | |
| 476 { | |
| 477 StatSlot statSlot = new StatSlot(slot.GetAttribute("name")); | |
| 478 slots.Add(statSlot); | |
| 479 } | |
| 480 | |
| 481 return new SystemStats(id, slots.ToArray()); | |
| 482 } | |
| 483 | |
| 484 private EquipmentItem CreateEquipmentItemFromElement(XmlElement elem, Race race) | |
| 485 { | |
| 486 string id = elem.GetAttribute("id"); | |
| 487 string name = elem.GetAttribute("name"); | |
| 488 float cost = 0, min = 0, max = 0; | |
| 489 ArmourType armourType; | |
| 490 | |
| 491 try | |
| 492 { | |
| 493 cost = float.Parse(elem.GetAttribute("cost")); | |
| 494 } | |
| 495 catch(FormatException) | |
| 496 { | |
| 497 throw new FormatException("Attribute 'cost' of equipment item "+id+" was not a valid number"); | |
| 498 } | |
| 499 | |
| 500 try | |
| 501 { | |
| 502 min = float.Parse(elem.GetAttribute("min")); | |
| 503 } | |
| 504 catch(FormatException) | |
| 505 { | |
| 506 throw new FormatException("Attribute 'min' of equipment item "+id+" was not a valid number"); | |
| 507 } | |
| 508 | |
| 509 try | |
| 510 { | |
| 511 max = float.Parse(elem.GetAttribute("max")); | |
| 512 } | |
| 513 catch(FormatException) | |
| 514 { | |
| 515 throw new FormatException("Attribute 'max' of equipment item "+id+" was not a valid number"); | |
| 516 } | |
| 517 | |
| 518 try | |
| 519 { | |
| 520 armourType = (ArmourType)Enum.Parse(typeof(ArmourType), elem.GetAttribute("armourType")); | |
| 521 } | |
| 522 catch(FormatException) | |
| 523 { | |
| 524 throw new InvalidFileException("Attribute 'armourType' of equipment "+id+" was not a valid value from the enumeration"); | |
| 525 } | |
| 526 | |
| 527 if (elem.ChildNodes.Count>0) | |
| 528 { | |
| 529 //It has stats! | |
| 530 //TODO: Parse equipment stats | |
| 531 } | |
| 532 | |
| 533 return new EquipmentItem(id, name, cost, min, max, armourType, race); | |
| 534 } | |
| 535 } | |
| 536 } |