toLzmaLevel
Map CompressionLevel / numericLevel to an LZMA preset (0..9).
When opts.numericLevel >= 0, the numeric value is used directly as the LZMA preset (valid range: 0 to 9). Negative numericLevel values are treated as "not set" because the default sentinel is -1.
Parameters
opts | Compression options to extract the level from. |
Returns
The integer LZMA preset level.