430 lines
13 KiB
C#
Executable File
430 lines
13 KiB
C#
Executable File
#region Copyright & License Information
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/*
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* Copyright 2007-2011 The OpenRA Developers (see AUTHORS)
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation. For more information,
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* see COPYING.
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*/
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#endregion
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using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.Globalization;
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using System.Linq;
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using System.Reflection;
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namespace OpenRA.FileFormats
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{
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public static class FieldLoader
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{
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public static Func<string, Type, string, object> InvalidValueAction = (s, t, f) =>
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{
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throw new InvalidOperationException("FieldLoader: Cannot parse `{0}` into `{1}.{2}` ".F(s, f, t));
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};
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public static Action<string, Type> UnknownFieldAction = (s, f) =>
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{
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throw new NotImplementedException("FieldLoader: Missing field `{0}` on `{1}`".F(s, f.Name));
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};
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public static void Load(object self, MiniYaml my)
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{
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var loadDict = typeLoadInfo[self.GetType()];
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foreach (var kv in loadDict)
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{
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object val;
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if (kv.Value != null)
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val = kv.Value(kv.Key.Name, kv.Key.FieldType, my);
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else if (!TryGetValueFromYaml(kv.Key.Name, kv.Key.FieldType, my, out val))
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continue;
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kv.Key.SetValue(self, val);
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}
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}
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static bool TryGetValueFromYaml(string fieldName, Type fieldType, MiniYaml yaml, out object ret)
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{
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ret = null;
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var n = yaml.Nodes.Where(x => x.Key == fieldName).ToList();
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if (n.Count == 0)
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return false;
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if (n.Count == 1 && n[0].Value.Nodes.Count == 0)
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{
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ret = GetValue(fieldName, fieldType, n[0].Value.Value);
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return true;
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}
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else if (n.Count > 1)
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{
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throw new InvalidOperationException("The field {0} has multiple definitions:\n{1}"
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.F(fieldName, n.Select(m => "\t- " + m.Location).JoinWith("\n")));
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}
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throw new InvalidOperationException("TryGetValueFromYaml: unable to load field {0} (of type {1})".F(fieldName, fieldType));
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}
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public static T Load<T>(MiniYaml y) where T : new()
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{
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var t = new T();
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Load(t, y);
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return t;
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}
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static readonly object[] NoIndexes = { };
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public static void LoadField(object self, string key, string value)
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{
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var field = self.GetType().GetField(key.Trim());
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if (field != null)
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{
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if (!field.HasAttribute<FieldFromYamlKeyAttribute>())
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field.SetValue(self, GetValue(field.Name, field.FieldType, value));
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return;
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}
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var prop = self.GetType().GetProperty(key.Trim());
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if (prop != null)
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{
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if (!prop.HasAttribute<FieldFromYamlKeyAttribute>())
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prop.SetValue(self, GetValue(prop.Name, prop.PropertyType, value), NoIndexes);
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return;
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}
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UnknownFieldAction(key.Trim(), self.GetType());
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}
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public static T GetValue<T>(string field, string value)
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{
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return (T)GetValue(field, typeof(T), value);
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}
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public static object GetValue(string field, Type fieldType, string x)
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{
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if (x != null) x = x.Trim();
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if (fieldType == typeof(int))
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{
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int res;
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if (int.TryParse(x, out res))
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return res;
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return InvalidValueAction(x, fieldType, field);
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}
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else if (fieldType == typeof(ushort))
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{
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ushort res;
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if (ushort.TryParse(x, out res))
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return res;
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return InvalidValueAction(x, fieldType, field);
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}
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else if (fieldType == typeof(float))
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{
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float res;
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if (float.TryParse(x.Replace("%", ""), NumberStyles.Any, NumberFormatInfo.InvariantInfo, out res))
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return res * (x.Contains('%') ? 0.01f : 1f);
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return InvalidValueAction(x, fieldType, field);
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}
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else if (fieldType == typeof(decimal))
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{
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decimal res;
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if (decimal.TryParse(x.Replace("%", ""), NumberStyles.Any, NumberFormatInfo.InvariantInfo, out res))
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return res * (x.Contains('%') ? 0.01m : 1m);
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return InvalidValueAction(x, fieldType, field);
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}
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else if (fieldType == typeof(string))
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return x;
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else if (fieldType == typeof(Color))
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{
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var parts = x.Split(',');
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if (parts.Length == 3)
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return Color.FromArgb(int.Parse(parts[0]).Clamp(0, 255), int.Parse(parts[1]).Clamp(0, 255), int.Parse(parts[2]).Clamp(0, 255));
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if (parts.Length == 4)
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return Color.FromArgb(int.Parse(parts[0]).Clamp(0, 255), int.Parse(parts[1]).Clamp(0, 255), int.Parse(parts[2]).Clamp(0, 255), int.Parse(parts[3]).Clamp(0, 255));
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return InvalidValueAction(x, fieldType, field);
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}
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else if (fieldType == typeof(HSLColor))
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{
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var parts = x.Split(',');
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// Allow old ColorRamp format to be parsed as HSLColor
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if (parts.Length == 3 || parts.Length == 4)
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return new HSLColor(
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(byte)int.Parse(parts[0]).Clamp(0, 255),
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(byte)int.Parse(parts[1]).Clamp(0, 255),
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(byte)int.Parse(parts[2]).Clamp(0, 255));
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return InvalidValueAction(x, fieldType, field);
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}
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else if (fieldType == typeof(WRange))
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{
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WRange res;
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if (WRange.TryParse(x, out res))
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return res;
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return InvalidValueAction(x, fieldType, field);
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}
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else if (fieldType == typeof(WVec))
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{
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var parts = x.Split(',');
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if (parts.Length == 3)
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{
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WRange rx, ry, rz;
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if (WRange.TryParse(parts[0], out rx) && WRange.TryParse(parts[1], out ry) && WRange.TryParse(parts[2], out rz))
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return new WVec(rx, ry, rz);
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}
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return InvalidValueAction(x, fieldType, field);
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}
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else if (fieldType == typeof(WPos))
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{
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var parts = x.Split(',');
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if (parts.Length == 3)
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{
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WRange rx, ry, rz;
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if (WRange.TryParse(parts[0], out rx) && WRange.TryParse(parts[1], out ry) && WRange.TryParse(parts[2], out rz))
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return new WPos(rx, ry, rz);
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}
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return InvalidValueAction(x, fieldType, field);
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}
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else if (fieldType == typeof(WAngle))
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{
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int res;
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if (int.TryParse(x, out res))
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return new WAngle(res);
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return InvalidValueAction(x, fieldType, field);
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}
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else if (fieldType == typeof(WRot))
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{
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var parts = x.Split(',');
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if (parts.Length == 3)
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{
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int rr, rp, ry;
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if (int.TryParse(x, out rr) && int.TryParse(x, out rp) && int.TryParse(x, out ry))
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return new WRot(new WAngle(rr), new WAngle(rp), new WAngle(ry));
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}
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return InvalidValueAction(x, fieldType, field);
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}
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else if (fieldType.IsEnum)
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{
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if (!Enum.GetNames(fieldType).Select(a => a.ToLower()).Contains(x.ToLower()))
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return InvalidValueAction(x, fieldType, field);
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return Enum.Parse(fieldType, x, true);
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}
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else if (fieldType == typeof(bool))
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return ParseYesNo(x, fieldType, field);
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else if (fieldType.IsArray)
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{
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if (x == null)
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return Array.CreateInstance(fieldType.GetElementType(), 0);
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var parts = x.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
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var ret = Array.CreateInstance(fieldType.GetElementType(), parts.Length);
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for (int i = 0; i < parts.Length; i++)
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ret.SetValue(GetValue(field, fieldType.GetElementType(), parts[i].Trim()), i);
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return ret;
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}
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else if (fieldType == typeof(int2))
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{
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var parts = x.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
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return new int2(int.Parse(parts[0]), int.Parse(parts[1]));
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}
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else if (fieldType == typeof(float2))
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{
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var parts = x.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
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float xx = 0;
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float yy = 0;
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float res;
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if (float.TryParse(parts[0].Replace("%", ""), out res))
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xx = res * (parts[0].Contains('%') ? 0.01f : 1f);
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if (float.TryParse(parts[1].Replace("%", ""), out res))
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yy = res * (parts[1].Contains('%') ? 0.01f : 1f);
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return new float2(xx, yy);
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}
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else if (fieldType == typeof(Rectangle))
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{
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var parts = x.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
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return new Rectangle(int.Parse(parts[0]), int.Parse(parts[1]), int.Parse(parts[2]), int.Parse(parts[3]));
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}
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else if (fieldType.IsGenericType && fieldType.GetGenericTypeDefinition() == typeof(Bits<>))
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{
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var parts = x.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
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var argTypes = new Type[] { typeof(string[]) };
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var argValues = new object[] { parts };
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return fieldType.GetConstructor(argTypes).Invoke(argValues);
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}
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else if (fieldType.IsGenericType && fieldType.GetGenericTypeDefinition() == typeof(Nullable<>))
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{
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var innerType = fieldType.GetGenericArguments().First();
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var innerValue = GetValue("Nullable<T>", innerType, x);
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return fieldType.GetConstructor(new []{ innerType }).Invoke(new []{ innerValue });
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}
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UnknownFieldAction("[Type] {0}".F(x), fieldType);
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return null;
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}
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static object ParseYesNo(string p, System.Type fieldType, string field)
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{
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p = p.ToLowerInvariant();
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if (p == "yes") return true;
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if (p == "true") return true;
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if (p == "no") return false;
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if (p == "false") return false;
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return InvalidValueAction(p, fieldType, field);
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}
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static Cache<Type, Dictionary<FieldInfo, Func<string, Type, MiniYaml, object>>> typeLoadInfo = new Cache<Type, Dictionary<FieldInfo, Func<string, Type, MiniYaml, object>>>(GetTypeLoadInfo);
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static Dictionary<FieldInfo, Func<string, Type, MiniYaml, object>> GetTypeLoadInfo(Type type)
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{
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var ret = new Dictionary<FieldInfo, Func<string, Type, MiniYaml, object>>();
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foreach (var ff in type.GetFields())
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{
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var field = ff;
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var ignore = field.GetCustomAttributes<IgnoreAttribute>(false);
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var loadUsing = field.GetCustomAttributes<LoadUsingAttribute>(false);
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var fromYamlKey = field.GetCustomAttributes<FieldFromYamlKeyAttribute>(false);
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if (loadUsing.Length != 0)
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ret[field] = (_1, fieldType, yaml) => loadUsing[0].LoaderFunc(field)(yaml);
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else if (fromYamlKey.Length != 0)
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ret[field] = (f, ft, yaml) => GetValue(f, ft, yaml.Value);
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else if (ignore.Length == 0)
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ret[field] = null;
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}
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return ret;
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}
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[AttributeUsage(AttributeTargets.Field)]
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public class IgnoreAttribute : Attribute { }
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[AttributeUsage(AttributeTargets.Field)]
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public class LoadUsingAttribute : Attribute
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{
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Func<MiniYaml, object> loaderFuncCache;
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public readonly string Loader;
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public LoadUsingAttribute(string loader)
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{
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Loader = loader;
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}
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internal Func<MiniYaml, object> LoaderFunc(FieldInfo field)
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{
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const BindingFlags BindingFlag = BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static;
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if (loaderFuncCache == null)
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loaderFuncCache = (Func<MiniYaml, object>)Delegate.CreateDelegate(typeof(Func<MiniYaml, object>), field.DeclaringType.GetMethod(Loader, BindingFlag));
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return loaderFuncCache;
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}
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}
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}
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public static class FieldSaver
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{
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public static MiniYaml Save(object o)
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{
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var nodes = new List<MiniYamlNode>();
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string root = null;
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foreach (var f in o.GetType().GetFields(BindingFlags.Public | BindingFlags.Instance))
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{
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if (f.HasAttribute<FieldFromYamlKeyAttribute>())
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root = FormatValue(o, f);
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else
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nodes.Add(new MiniYamlNode(f.Name, FormatValue(o, f)));
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}
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return new MiniYaml(root, nodes);
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}
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public static MiniYaml SaveDifferences(object o, object from)
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{
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if (o.GetType() != from.GetType())
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throw new InvalidOperationException("FieldLoader: can't diff objects of different types");
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var fields = o.GetType().GetFields(BindingFlags.Public | BindingFlags.Instance)
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.Where(f => FormatValue(o, f) != FormatValue(from, f));
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return new MiniYaml(null, fields.Select(f => new MiniYamlNode(f.Name, FormatValue(o, f))).ToList());
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}
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public static MiniYamlNode SaveField(object o, string field)
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{
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return new MiniYamlNode(field, FieldSaver.FormatValue(o, o.GetType().GetField(field)));
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}
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public static string FormatValue(object v, Type t)
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{
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if (v == null)
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return "";
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// Color.ToString() does the wrong thing; force it to format as an array
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if (t == typeof(Color))
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{
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var c = (Color)v;
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return "{0},{1},{2},{3}".F(((int)c.A).Clamp(0, 255),
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((int)c.R).Clamp(0, 255),
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((int)c.G).Clamp(0, 255),
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((int)c.B).Clamp(0, 255));
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}
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// Don't save floats in settings.yaml using country-specific decimal separators which can be misunderstood as group seperators.
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if (t == typeof(float))
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return ((float)v).ToString(CultureInfo.InvariantCulture);
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if (t == typeof(Rectangle))
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{
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var r = (Rectangle)v;
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return "{0},{1},{2},{3}".F(r.X, r.Y, r.Width, r.Height);
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}
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if (t.IsArray)
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{
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var elems = ((Array)v).OfType<object>();
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return elems.JoinWith(",");
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}
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return v.ToString();
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}
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public static string FormatValue(object o, FieldInfo f)
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{
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return FormatValue(f.GetValue(o), f.FieldType);
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}
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}
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public class FieldFromYamlKeyAttribute : Attribute { }
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// mirrors DescriptionAttribute from System.ComponentModel but we dont want to have to use that everywhere.
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public class DescAttribute : Attribute
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{
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public readonly string[] Lines;
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public DescAttribute(params string[] lines) { Lines = lines; }
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}
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}
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