Sven/MakeColors
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Improve usage message and add to README

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Sven Weidauer 2020-12-31 19:44:26 +01:00
parent abc0ef910d
commit 13f985c0a4
2 changed files with 44 additions and 5 deletions
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29
Sources/LibMakeColors/MakeColors.swift
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@ -28,17 +28,36 @@ enum Errors: Error {
case cannotReadStdin
}
enum HelpTexts {
static let input = ArgumentHelp(
"The color list to process.",
discussion: """
Use - to process the standard input.
"""
)
static let output = ArgumentHelp(
"Output file to write.",
discussion: """
Use - for standard output.
Default is the input file name with the appropriate file extension. \
If the input is - the default is standard output.
Note that asset catalogs cannot be written to standard output.
"""
)
}
public final class MakeColors: ParsableCommand, Context {
@Argument(help: "The color list to proces")
@Argument(help: HelpTexts.input)
var input: String
@Flag(help: "The formatter to use")
@Flag(help: "The formatter to use.")
private var formatter = GeneratorOption.allCases[0]
@Option(help: "Prefix for color names")
@Option(help: "Prefix for color names.")
var prefix: String?
@Option(help: "Output file")
@Option(help: HelpTexts.output)
var output: String?
public init() {}
@ -103,7 +122,7 @@ public final class MakeColors: ParsableCommand, Context {
}
}
var shouldWriteToStdout: Bool { input == "-" && output == nil }
var shouldWriteToStdout: Bool { output == "-" || (input == "-" && output == nil) }
func outputURL(extension: String) -> URL {
if let output = output {