103 lines
3.4 KiB
C#
103 lines
3.4 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Reflection;
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using System.Xml;
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using Gallery.Util;
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using Xamarin.Forms;
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using Xamarin.Forms.Xaml;
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namespace Gallery.Resources
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{
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public class Helper
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{
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private static readonly Dictionary<string, LanguageResource> dict = new();
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public static string GetResource(string name, params object[] args)
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{
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if (!dict.TryGetValue(App.CurrentCulture.PlatformString, out LanguageResource lang))
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{
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lang = new LanguageResource(App.CurrentCulture);
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dict.Add(App.CurrentCulture.PlatformString, lang);
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}
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if (args == null || args.Length == 0)
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{
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return lang[name];
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}
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return string.Format(lang[name], args);
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}
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private class LanguageResource
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{
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private readonly Dictionary<string, string> strings;
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public string this[string key]
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{
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get
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{
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if (strings != null && strings.TryGetValue(key, out string val))
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{
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return val;
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}
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return key;
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}
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}
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public LanguageResource(PlatformCulture lang)
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{
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try
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{
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const string PROJECT = "Gallery";
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const string PLATFORM =
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#if __IOS__
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"iOS";
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#elif __ANDROID__
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"Droid";
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#endif
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var langId = $"{PROJECT}.{PLATFORM}.Resources.Languages.{lang.Language}.xml";
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var langCodeId = $"{PROJECT}.{PLATFORM}.Resources.Languages.{lang.LanguageCode}.xml";
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var assembly = IntrospectionExtensions.GetTypeInfo(typeof(LanguageResource)).Assembly;
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var names = assembly.GetManifestResourceNames();
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var name = names.FirstOrDefault(n =>
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string.Equals(n, langId, StringComparison.OrdinalIgnoreCase) ||
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string.Equals(n, langCodeId, StringComparison.OrdinalIgnoreCase));
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if (name == null)
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{
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name = $"{PROJECT}.{PLATFORM}.Resources.Languages.zh-CN.xml";
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}
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var xml = new XmlDocument();
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using (var stream = assembly.GetManifestResourceStream(name))
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{
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xml.Load(stream);
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}
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strings = new Dictionary<string, string>();
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foreach (XmlElement ele in xml.DocumentElement)
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{
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strings[ele.Name] = ele.InnerText;
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}
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}
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catch (Exception ex)
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{
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// load failed
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Log.Error("language.ctor", $"failed to load xml resource: {ex.Message}");
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}
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}
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}
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}
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[ContentProperty(nameof(Text))]
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public class TextExtension : IMarkupExtension
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{
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public string Text { get; set; }
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public object ProvideValue(IServiceProvider serviceProvider)
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{
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if (Text == null)
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{
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return string.Empty;
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}
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return Helper.GetResource(Text);
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}
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}
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}
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