Support case insensitive parsing of quantities

[angularsen]

Motivation

Make it easier to define unit abbreviations in order for Parse() to work for all variations of upper/lowercase in the unit abbreviation.

This was already supported for UnitParser and even though QuantityParser builds on top of UnitParser, it failed due to a regex it computes based on the list of unit abbreviations.

Design

• Case insensitive parsing should "just work" if it matches exactly one abbreviation
• If case insensitive parsing matches multiple units, then only an exact match on casing will succeed. Otherwise it already throws UnitNotFoundException in UnitParser.

Examples

• Volume.Parse("1 L") currently fails, because only lowercase l is defined in JSON. There are no other volume units with the same lowercase abbreviation.

Changes

• Add ignore case flag to regex in QuantityParser
• Add tests for happy and sad cases

[angularsen]

Release UnitsNet/4.59.0 · angularsen/UnitsNet