public static IEnumerable <CodeValuePair> EnumerateStdSourceParams(ISourceRef source)
{
if ((source != null) && !string.IsNullOrEmpty(source.SourcePath))
{
string tmp = source.SourcePath;
yield return(new CodeValuePair()
{
Code = TemplParams.FilePath, Value = tmp
});
yield return(new CodeValuePair()
{
Code = TemplParams.DirPath, Value = TemplParams.GetDirPath(tmp)
});
yield return(new CodeValuePair()
{
Code = TemplParams.FileName, Value = TemplParams.GetFileName(tmp)
});
yield return(new CodeValuePair()
{
Code = TemplParams.FileExt, Value = TemplParams.GetFileExt(tmp)
});
}
}
/// <summary>
/// Execute external command. <paramref name="srf"/> must implement <see cref="ISourceRef"/>.
/// </summary>
/// <param name="srf">Target media file. Must implement <see cref="ISourceRef"/></param>
public virtual void Execute(ISourceRef srf, Func <string, string> getValue = null)
{
if (srf != null)
{
this.Execute(TemplParams.EnumerateStdSourceParams(srf), getValue);
}
}
/// <summary>
/// Checks if this command can be applied to the target media file.
/// <paramref name="srf"/> must implement <see cref="ISourceRef"/>.
/// </summary>
/// <param name="srf">Must implement <see cref="ISourceRef"/></param>
/// <returns></returns>
public virtual bool CanExecute(ISourceRef srf)
{
if (srf == null)
{
return(false);
}
if (this.ApplicableFileExtensions != null)
{
if (!this.ApplicableFileExtensions.Contains(TemplParams.GetFileExt(srf.SourcePath)))
{
return(false);
}
}
return(true);
}
public void Process(MediaTrackSource msrc)
{
this.Status.Clear();
ExternalCommand xcmd;
if (msrc.Targets.Count > 0)
{
List <CodeValuePair> srcPrms = new List <CodeValuePair>(TemplParams.EnumerateStdSourceParams(msrc));
foreach (var t in msrc.Targets)
{
t.Source = msrc;
xcmd = t.XCmd;
if ((xcmd != null) && xcmd.CanExecute(msrc))
{
var pQ = srcPrms.Union(EnumerateTrgParams(t));
xcmd.Execute(pQ);
}
}
}
}
