public async Task RunExifToolWithThreeCommands()
{
// arrange
var sut = new AsyncExifTool(AsyncExifToolConfigurationFactory.Create());
sut.Initialize();
// act
var task1 = sut.ExecuteAsync(image);
var task2 = sut.ExecuteAsync(image);
var task3 = sut.ExecuteAsync(image);
// assert
var result3 = await task3.ConfigureAwait(false);
result3.Should().NotBeNullOrEmpty();
var result2 = await task2.ConfigureAwait(false);
result2.Should().NotBeNullOrEmpty();
var result1 = await task1.ConfigureAwait(false);
result1.Should().NotBeNullOrEmpty();
await sut.DisposeAsync().ConfigureAwait(false);
}
public async Task WriteCustomXmpTagsToImageTest()
{
// arrange
#if NETCOREAPP3_0
await using var sut = new AsyncExifTool(AsyncExifToolConfigurationFactory.CreateWithCustomConfig());
#else
using var sut = new AsyncExifTool(AsyncExifToolConfigurationFactory.CreateWithCustomConfig());
#endif
sut.Initialize();
// act
var @params = new[] { "-XMP-CoenmAsyncExifTool:MyCustomId=test123", "-XMP-CoenmAsyncExifTool:MyCustomTimestamp=2020:05:08 12:00:45+02:00", "-XMP-CoenmAsyncExifTool:MyCustomTags+=holidays", "-XMP-CoenmAsyncExifTool:MyCustomTags+=summer", image, };
var readResultBefore = await sut.ExecuteAsync(image).ConfigureAwait(false);
var writeResult = await sut.ExecuteAsync(@params).ConfigureAwait(false);
var readResultAfter = await sut.ExecuteAsync(image).ConfigureAwait(false);
// assert
writeResult.Trim().Should().Be("1 image files updated");
readResultBefore.Should().NotContain("My Custom Id : test123");
readResultBefore.Should().NotContain("My Custom Tags : holidays, summer");
readResultBefore.Should().NotContain("My Custom Timestamp : 2020:05:08 12:00:45");
readResultAfter.Should().Contain("My Custom Id : test123");
readResultAfter.Should().Contain("My Custom Tags : holidays, summer");
readResultAfter.Should().Contain("My Custom Timestamp : 2020:05:08 12:00:45+02:00");
// just for fun
output.WriteLine(readResultAfter);
}
public async Task WriteXmpSubjectsToImageTest()
{
// arrange
#if NETCOREAPP3_0
await using var sut = new AsyncExifTool(AsyncExifToolConfigurationFactory.Create());
#else
using var sut = new AsyncExifTool(AsyncExifToolConfigurationFactory.Create());
#endif
sut.Initialize();
// act
var @params = new[] { "-XMP-dc:Subject+=def", "-XMP-dc:Subject+=abc", "-XMP-dc:Subject=xyz", image, };
var readResultBefore = await sut.ExecuteAsync(image).ConfigureAwait(false);
var writeResult = await sut.ExecuteAsync(@params).ConfigureAwait(false);
var readResultAfter = await sut.ExecuteAsync(image).ConfigureAwait(false);
// assert
readResultBefore.Should().Contain("Subject : dog, new york, puppy");
readResultBefore.Should().NotContain("Subject : dog, new york, puppy, def, abc, xyz");
writeResult.Should().Be(" 1 image files updated" + Environment.NewLine);
readResultAfter.Should().Contain("Subject : dog, new york, puppy, def, abc, xyz" + Environment.NewLine);
// just for fun
output.WriteLine(readResultAfter);
}
private static void ParseImageFile(string path, AsyncExifTool asyncExifTool, Dictionary <string, Dictionary <string, ExifData> > data)
{
Console.WriteLine("Processing {0}...", path);
var fileData = new Dictionary <string, ExifData>();
data.Add(path, fileData);
ParseFileData(asyncExifTool.ExecuteAsync(new[] { "-a", "-g", "-sort", path }).ConfigureAwait(false).GetAwaiter().GetResult(), fileData, true);
ParseFileData(asyncExifTool.ExecuteAsync(new[] { "-a", "-g", "-n", "-sort", path }).ConfigureAwait(false).GetAwaiter().GetResult(), fileData, false);
}
public async Task RunExiftoolGetImageSizeAndExposureTime()
{
// arrange
var sut = new AsyncExifTool(AsyncExifToolConfigurationFactory.Create());
sut.Initialize();
// act
var result = await sut.ExecuteAsync(
new[]
{
"-s",
"-ImageSize",
"-ExposureTime",
image,
})
.ConfigureAwait(false);
// assert
result.Should().Be("ImageSize : 1712x2288" + Environment.NewLine);
await sut.DisposeAsync().ConfigureAwait(false);
// just for fun
output.WriteLine(image);
output.WriteLine(result);
}
public async Task RunExiftool_ShouldReturnEmpty_WhenQueriedTagDoesNotExist()
{
// arrange
var sut = new AsyncExifTool(AsyncExifToolConfigurationFactory.Create());
sut.Initialize();
// act
var result = await sut.ExecuteAsync(
new[]
{
"-ExposureTime",
image,
})
.ConfigureAwait(false);
// assert
result.Should().Be(string.Empty);
await sut.DisposeAsync().ConfigureAwait(false);
// just for fun
output.WriteLine(image);
output.WriteLine(result);
}
public async Task <int> GetImageRotationDegreesAsync(string filename)
{
var result = await asyncExifTool.ExecuteAsync(new[] { "-Orientation", "-n", filename });
if (result == null)
{
return(0);
}
result = result.ToLower();
result = result.Replace("orientation", string.Empty);
result = result.Replace(":", string.Empty);
result = result.Trim();
if (!int.TryParse(result, NumberStyles.None, new NumberFormatInfo(), out var intResult))
{
return(0);
}
return(intResult switch
{
1 => 0,
3 => 180,
6 => 90,
8 => 270,
_ => 0
});
/// <summary>
/// Execute single command on ExifTool instance.
/// </summary>
/// <param name="this">Instance of <see cref="AsyncExifTool"/> to use to execute this command. Cannot be <c>null</c>.</param>
/// <param name="singleArg">The command to run on exiftool. For instance `-ver`. See the ExifTool website for all options.</param>
/// <param name="ct">Cancellation token. Optional. Defaults to <see cref="CancellationToken.None"/>.</param>
/// <returns>ExifTool result containing the version information.</returns>
/// <exception cref="ArgumentNullException">Thrown when <paramref name="this"/> is <c>null</c>.</exception>
public static Task <string> ExecuteAsync([NotNull] this AsyncExifTool @this, string singleArg, CancellationToken ct = default)
{
if (@this == null)
{
throw new ArgumentNullException(nameof(@this));
}
return(@this.ExecuteAsync(new[] { singleArg }, ct));
}
public async Task RunExiftoolForVersionAndImageErrorTest()
{
// arrange
var sut = new AsyncExifTool(AsyncExifToolConfigurationFactory.Create());
sut.Initialize();
// act
var getMetadataNonExistingImageTask = sut.ExecuteAsync(image + "does not exist");
Func <Task> act = async() => await getMetadataNonExistingImageTask;
var version = await sut.GetVersionAsync().ConfigureAwait(false);
// assert
act.Should().Throw <Exception>();
version.Should().NotBeNullOrEmpty();
await sut.DisposeAsync().ConfigureAwait(false);
}
public async Task RunExiftoolForVersionAndImageTest()
{
// arrange
var sut = new AsyncExifTool(AsyncExifToolConfigurationFactory.Create());
sut.Initialize();
// act
var version = await sut.GetVersionAsync().ConfigureAwait(false);
var result = await sut.ExecuteAsync(image).ConfigureAwait(false);
// assert
version.Should().NotBeNullOrEmpty();
result.Should().NotBeNullOrEmpty();
await sut.DisposeAsync().ConfigureAwait(false);
// just for fun
output.WriteLine(version);
output.WriteLine(result);
}
public static async Task Main()
{
ConfigureNLog();
var nlogLogger = LogManager.GetCurrentClassLogger(typeof(AsyncExifTool));
Console.WriteLine("Sample application using AsyncExifTool in combination with NLog");
// AsyncExifTool configuration. Please make sure exiftool.exe is accessible.
var commonArgs = new List <string>();
var asyncExifToolConfiguration = new AsyncExifToolConfiguration(
"exiftool.exe",
Encoding.UTF8,
commonArgs);
// Create a logger for AsyncExifTool. AsyncExifTool does not require any logging framework. You have to write your own adapter.
var logger = new AsyncExifToolToNLogAdapter(nlogLogger);
// Create AsyncExifTool instance. You can also do this without a logger.
// ie:
// await using var exiftool = new AsyncExifTool(asyncExifToolConfiguration);
await using var exiftool = new AsyncExifTool(asyncExifToolConfiguration, logger);
try
{
// initialize. At this point the exiftool process is started.
// this call might throw an exception.
exiftool.Initialize();
}
catch (AsyncExifToolInitialisationException e)
{
Console.WriteLine(e);
Console.WriteLine("press enter to exit");
Console.ReadKey();
return;
}
// Just some calls to ExifTool (using an extension method)
for (int i = 0; i < 100; i++)
{
Console.WriteLine(await exiftool.GetVersionAsync());
}
try
{
var result = await exiftool.ExecuteAsync("dummy command");
Console.WriteLine("dummy command result: " + result);
}
catch (Exception e)
{
Console.WriteLine("dummy command result exception: " + e.Message);
}
var file = @"1.jpg";
try
{
Console.WriteLine("Add person to existing image.");
var result = await exiftool.ExecuteAsync(new[] { "-Xmp:PersonInImage+=\"Test person\"", file });
Console.WriteLine($"RESULT: {result}");
}
catch (Exception e)
{
Console.WriteLine($"ERROR MSG: {e.Message}");
}
Console.WriteLine(string.Empty);
try
{
Console.WriteLine("Add person to NON existing image.");
var result = await exiftool.ExecuteAsync(new[] { "-Xmp:PersonInImage+=\"Test person\"", file + @"xxx" });
Console.WriteLine($"RESULT: {result}");
}
catch (Exception e)
{
Console.WriteLine($"ERROR MSG: {e.Message}");
}
Console.WriteLine(string.Empty);
try
{
Console.WriteLine("Get person information from image.");
var result = await exiftool.ExecuteAsync(new[] { "-Xmp:PersonInImage", file });
Console.WriteLine($"RESULT: {result}");
}
catch (Exception e)
{
Console.WriteLine($"ERROR MSG: {e.Message}");
}
Console.WriteLine(string.Empty);
// we are done
Console.WriteLine("press enter to exit");
Console.ReadLine();
}
