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using System;
using System.Xml;
using Microsoft.Build.Utilities;
using Xamarin.Forms.Xaml;
namespace Xamarin.Forms.Build.Tasks
{
public class Logger {
public TaskLoggingHelper Helper { get; }
public int Verbosity { get; }
public Logger(TaskLoggingHelper helper, int verbosity)
{
Verbosity = verbosity;
Helper = helper;
}
string buffer = "";
public void LogException(string subcategory, string errorCode, string helpKeyword, string file, Exception e)
{
var xpe = e as XamlParseException;
var xe = e as XmlException;
if (xpe != null)
LogError(subcategory, errorCode, helpKeyword, file, xpe.XmlInfo.LineNumber, xpe.XmlInfo.LinePosition, 0, 0, xpe.Message, xpe.HelpLink, xpe.Source);
else if (xe != null)
LogError(subcategory, errorCode, helpKeyword, file, xe.LineNumber, xe.LinePosition, 0, 0, xe.Message, xe.HelpLink, xe.Source);
else
LogError(subcategory, errorCode, helpKeyword, file, 0, 0, 0, 0, e.Message, e.HelpLink, e.Source);
}
public void LogError(string subcategory, string errorCode, string helpKeyword, string file, int lineNumber,
int columnNumber, int endLineNumber, int endColumnNumber, string message, params object [] messageArgs)
{
if (!string.IsNullOrEmpty(buffer))
LogLine(-1, null, null);
if (Helper != null) {
Helper.LogError(subcategory, errorCode, helpKeyword, file, lineNumber, columnNumber, endLineNumber,
endColumnNumber, message, messageArgs);
} else
Console.Error.WriteLine($"{file} ({lineNumber}:{columnNumber}) : {message}");
}
public void LogLine(int level, string format, params object [] arg)
{
if (!string.IsNullOrEmpty(buffer)) {
format = buffer + format;
buffer = "";
}
if (level < 0) {
if (Helper != null)
Helper.LogError(format, arg);
else
Console.Error.WriteLine(format, arg);
} else if (level <= Verbosity) {
if (Helper != null)
Helper.LogMessage(format, arg);
else
Console.WriteLine(format, arg);
}
}
public void LogString(int level, string format, params object [] arg)
{
if (level <= 0)
Console.Error.Write(format, arg);
else if (level <= Verbosity) {
if (Helper != null)
buffer += String.Format(format, arg);
else
Console.Write(format, arg);
}
}
}
}
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