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Add a new filter to output a unicode codepoint #121

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Add a new filter to output a unicode codepoint #121

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1 change: 1 addition & 0 deletions Sources/StencilSwiftKit/Environment.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -42,6 +42,7 @@ public extension Extension {
registerFilter("snakeToCamelCase", filter: Filters.Strings.snakeToCamelCase)
registerFilter("swiftIdentifier", filter: Filters.Strings.swiftIdentifier)
registerFilter("titlecase", filter: Filters.Strings.upperFirstLetter)
registerFilter("unicodeCase", filter: Filters.Strings.unicodeCase)
registerFilter("upperFirstLetter", filter: Filters.Strings.upperFirstLetter)
registerFilter("contains", filter: Filters.Strings.contains)
registerFilter("hasPrefix", filter: Filters.Strings.hasPrefix)
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8 changes: 8 additions & 0 deletions Sources/StencilSwiftKit/Filters+Strings.swift
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Expand Up @@ -179,6 +179,14 @@ extension Filters.Strings {
return result
}

static func unicodeCase(value: Any?) throws -> Any? {
guard let string = value as? String else { throw Filters.Error.invalidInputType }
let escapingCharacterSet = CharacterSet(charactersIn: "\\")
let unicode = string.trimmingCharacters(in: escapingCharacterSet)

return "\\u{" + unicode + "}"
}

// MARK: Private

private static func containsAnyLowercasedChar(_ string: String) throws -> Bool {
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