private void SetFilter(WinForms.FileDialog dialog)
{
if (AllowedFileTypes != null)
{
var f = string.Join("; ", AllowedFileTypes.Select(s => "*." + s));
dialog.Filter = f + '|' + f;
}
}
/// <summary>
/// Create a set of rules to limit invalid parse transactions (and reduce parsing costs).
/// </summary>
/// <param name="maxBatchSize">
/// The maximum amount of files allowed in a batch parse. If a directory contains more valid files, an error is thrown.
/// This is important to keep users from unknowingly consuming large numbers of parsing credits.
/// </param>
/// <param name="disallowedFileTypes">
/// File types to skip. Use the <see cref="DefaultDisallowedFileTypes"/> unless you have a specific use case.
/// </param>
/// <param name="allowedFileTypes">
/// File types to exclusively allow. ANY value in here will mean the <see cref="DisallowedFileTypes"/>
/// property is ignored and only types in this list are allowed.
/// </param>
/// <param name="shouldProcessFn">
/// A custom function to decide whether or not a file should be parsed. It should return <see langword="true"/> to parse the file.
/// This could be used, for example, to check if you have already parsed a particular
/// file in your system before spending credits to parse it again.
/// NOTE: If defined, this will be called only AFTER a file passes the other 'file type' checks.
/// </param>
public BatchParsingRules(int maxBatchSize,
IEnumerable <string> disallowedFileTypes = null,
IEnumerable <string> allowedFileTypes = null,
Func <string, bool> shouldProcessFn = null)
{
MaxBatchSize = maxBatchSize;
DisallowedFileTypes = disallowedFileTypes ?? DefaultDisallowedFileTypes;
ShouldProcessFile = shouldProcessFn;
AllowedFileTypes = allowedFileTypes ?? new List <string>();
//remove any leading periods
DisallowedFileTypes = DisallowedFileTypes.Select(s => s.TrimStart('.'));
AllowedFileTypes = AllowedFileTypes.Select(s => s.TrimStart('.'));
}