policies_ex

type AdaptiveDeflator struct {
	// If not zero, this variable declares, how small a BLOB may be at least and how big it may be at most,
	// in order to archieve proper compression.
	CompressibleSize format.Range

	// The Maximum DELATE-Ratio, that might be used to compress the data.
	// This option is meant to limit the performance impact of large BLOBs.
	MaxRatio int

	// If true, the function will use HuffmanOnly instead of NoCompression for
	// non-compressible BLOBs.
	UseHuffmanInCase bool

	// If the data is compressible, add BoostRatio but don't exceed BoostMaxRatio
	BoostRatio, BoostMaxRatio int

	// If ZopfliMinSize <= len(data) <= ZopfliMaxSize AND len(data)!=0, then
	// the Zopfli Compression algorithm will be used instead of the regular
	// Deflate routines, thus resulting in much higher compression ratio.
	ZopfliMinSize, ZopfliMaxSize int

	// If the estimated compressibility is < ZopfliMinCompressibility, then
	// the Zopfli algorithm will not kick in.
	ZopfliMinCompressibility float64
}

type AdaptiveDeflatorConfig struct {
	CompressibleSize format.Range `inn:"size"`
	MaxRatio         int          `inn:"ratio"`
	UseHuffmanInCase bool         `inn:"nc-use-huffman"`
	BoostRatio       format.Range `inn:"boost"`
	Zopfli           struct {
		Size               format.Range `inn:"size"`
		MinCompressibility float64      `inn:"compressible"`
	} `inn:"zopfli!"`
}

type Layer struct {
	Inner      policies.PostingPolicy
	Element    []LayerElement
	PerformAll bool
}

type LayerElement struct {
	Xover, Head, Body policies.DeflateFunction

	ExpireDays int

	Criteria *Matcher
}

type Matcher struct {
	Newsgroups, Except, Exclude *regexp.Regexp

	SizeMin, SizeMax, LinesMin, LinesMax int64
}

type MatcherConfig struct {
	Newsgroups string         `inn:"newsgroups"`
	Except     string         `inn:"except"`
	Exclude    string         `inn:"exclude"`
	Size       format.Range64 `inn:"size"`
	Lines      format.Range64 `inn:"lines"`
}