internal static async Task ExportFontsAsZipAsync(List <FontVariant> fonts, string name)
{
if (await PickFileAsync(name, "ZIP", new[] { ".zip" }) is StorageFile file)
{
await Task.Run(async() =>
{
ExportNamingScheme scheme = ResourceHelper.AppSettings.ExportNamingScheme;
using var i = await file.OpenStreamForWriteAsync();
i.SetLength(0);
using ZipArchive z = new ZipArchive(i, ZipArchiveMode.Create);
foreach (var font in fonts)
{
if (DirectWrite.IsFontLocal(font.FontFace))
{
string fileName = GetFileName(font, scheme);
ZipArchiveEntry entry = z.CreateEntry(fileName);
using IOutputStream s = entry.Open().AsOutputStream();
await DirectWrite.WriteToStreamAsync(font.FontFace, s);
}
}
});
Messenger.Default.Send(new AppNotificationMessage(true, new ExportFontFileResult(true, file)));
}
}
private static async Task <bool> TryWriteToFileAsync(FontVariant font, StorageFile file)
{
try
{
using IRandomAccessStream s = await file.OpenAsync(FileAccessMode.ReadWrite);
s.Size = 0;
using IOutputStream o = s.GetOutputStreamAt(0);
await DirectWrite.WriteToStreamAsync(font.FontFace, o);
return(true);
}
catch { }
return(false);
}
private static async Task <bool> TryWriteToFileAsync(FontVariant font, StorageFile file)
{
try
{
using IRandomAccessStream s = await file.OpenAsync(FileAccessMode.ReadWrite).AsTask().ConfigureAwait(false);
s.Size = 0;
using IOutputStream o = s.GetOutputStreamAt(0);
await DirectWrite.WriteToStreamAsync(font.FontFace, o).AsTask().ConfigureAwait(false);
await s.FlushAsync(); // using statements force synchronous flushes
return(true);
}
catch { }
return(false);
}