PowerToys/Plugins/Wox.Plugin.Calculator/Main.cs

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C#
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using System.Collections.Generic;
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using System.Runtime.InteropServices;
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using System.Text.RegularExpressions;
using System.Windows;
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using YAMP;
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namespace Wox.Plugin.Caculator
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{
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public class Main : IPlugin, IPluginI18n
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{
private static Regex regValidExpressChar = new Regex(
@"^(" +
@"ceil|floor|exp|pi|e|max|min|det|abs|log|ln" +
@"sin|cos|tan|arcsin|arccos|arctan|" +
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@"eigval|eigvec|eig|sum|polar|plot|round|sort|real|zeta|" +
@"bin2dec|hex2dec|oct2dec|" +
@"==|~=|&&|\|\||" +
@"[ei]|[0-9]|[\+\-\*\/\^\., ""]|[\(\)\|\!\[\]]" +
@")+$", RegexOptions.Compiled);
private static Regex regBrackets = new Regex(@"[\(\)\[\]]", RegexOptions.Compiled);
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private static ParseContext yampContext;
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private PluginInitContext context { get; set; }
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static Main()
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{
yampContext = Parser.PrimaryContext;
Parser.InteractiveMode = false;
Parser.UseScripting = false;
}
public List<Result> Query(Query query)
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{
if (query.Search.Length <= 2 // don't affect when user only input "e" or "i" keyword
|| !regValidExpressChar.IsMatch(query.Search)
|| !IsBracketComplete(query.Search)) return new List<Result>();
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try
{
var result = yampContext.Run(query.Search);
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if (result.Output != null && !string.IsNullOrEmpty(result.Result))
{
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return new List<Result>
{ new Result
{
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Title = result.Result,
IcoPath = "Images/calculator.png",
Score = 300,
SubTitle = "Copy this number to the clipboard",
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Action = c =>
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{
try
{
Clipboard.SetText(result.Result);
return true;
}
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catch (ExternalException e)
{
MessageBox.Show("Copy failed, please try later");
return false;
}
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}
} };
}
}
catch
{}
return new List<Result>();
}
private bool IsBracketComplete(string query)
{
var matchs = regBrackets.Matches(query);
var leftBracketCount = 0;
foreach (Match match in matchs)
{
if (match.Value == "(" || match.Value == "[")
{
leftBracketCount++;
}
else
{
leftBracketCount--;
}
}
return leftBracketCount == 0;
}
public void Init(PluginInitContext context)
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{
this.context = context;
}
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public string GetTranslatedPluginTitle()
{
return context.API.GetTranslation("wox_plugin_caculator_plugin_name");
}
public string GetTranslatedPluginDescription()
{
return context.API.GetTranslation("wox_plugin_caculator_plugin_description");
}
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}
}