Mercurial > cgi-bin > hgweb.cgi > PassMan
annotate src/main/kotlin/name/blackcap/passman/Arguments.kt @ 21:ea65ab890f66
More work to support interactive feature.
| author | David Barts <n5jrn@me.com> |
|---|---|
| date | Tue, 02 Jul 2024 11:27:39 -0700 |
| parents | 7a74ae668665 |
| children | 3a3067ba673b |
| rev | line source |
|---|---|
| 16 | 1 package name.blackcap.passman |
| 2 | |
| 3 import org.apache.commons.cli.* | |
| 4 import kotlin.reflect.KCallable | |
| 5 import kotlin.reflect.KMutableProperty | |
| 6 import kotlin.reflect.full.findAnnotation | |
| 7 import kotlin.reflect.full.hasAnnotation | |
| 8 import kotlin.reflect.full.isSubtypeOf | |
| 9 import kotlin.reflect.typeOf | |
| 10 import kotlin.system.exitProcess | |
| 11 | |
| 12 @Target(AnnotationTarget.FIELD, AnnotationTarget.PROPERTY) | |
| 13 annotation class Argument( | |
| 14 val shortName: Char = AnnotationArgumentInfo.UNSPEC_SHORT, | |
| 15 val longName: String = AnnotationArgumentInfo.UNSPEC_LONG, | |
| 16 val description: String); | |
| 17 | |
| 18 private class AnnotationArgumentInfo(val property: KMutableProperty<*>) { | |
| 19 companion object { | |
| 20 const val UNSPEC_SHORT: Char = '\u0000' | |
| 21 const val UNSPEC_LONG: String = "" | |
| 22 } | |
| 23 val type = property.returnType | |
| 24 val annotation = property.findAnnotation<Argument>()!! | |
| 25 val longName = if (annotation.longName == UNSPEC_LONG) { property.name } else { annotation.longName } | |
| 26 val shortName = if (annotation.shortName == UNSPEC_SHORT) { longName.first() } else { annotation.shortName } | |
| 27 } | |
| 28 | |
| 29 private class AnnotationArgumentParser(val name: String, val args: Array<String>, val into: Any) { | |
| 30 private companion object { | |
| 31 val BOOLEAN_TYPE = typeOf<Boolean>() | |
| 32 val STRING_TYPE = typeOf<String>() | |
| 33 val CHAR_TYPE = typeOf<Char>() | |
| 34 } | |
| 35 | |
| 36 val annotated = into::class.members.filter { it is KMutableProperty<*> && it.hasAnnotation<Argument>() } | |
| 37 val options = Options() | |
| 38 lateinit var commandLine: CommandLine | |
| 39 | |
| 40 fun parse(): Array<String> { | |
| 41 build() | |
| 42 doParse() | |
| 43 return extract() | |
| 44 } | |
| 45 | |
| 46 private fun build() { | |
| 47 annotated.iterate { _, info -> | |
| 48 when { | |
| 49 info.type.isSubtypeOf(BOOLEAN_TYPE) -> | |
| 50 options.addOption(info.shortName.toString(), info.longName, false, info.annotation.description) | |
| 51 | |
| 52 info.type.isSubtypeOf(STRING_TYPE) || info.type.isSubtypeOf(CHAR_TYPE) -> | |
| 53 options.addOption(info.shortName.toString(), info.longName, true, info.annotation.description) | |
| 54 } | |
| 55 } | |
| 56 } | |
| 57 | |
| 58 private fun doParse() { | |
| 59 commandLine = try { | |
| 60 DefaultParser().parse(options, args) | |
| 61 } catch (e: ParseException) { | |
|
21
ea65ab890f66
More work to support interactive feature.
David Barts <n5jrn@me.com>
parents:
16
diff
changeset
|
62 throw SubcommandException(message = e.message ?: "syntax error", status = 2) |
| 16 | 63 } |
| 64 if (commandLine.hasOption("help")) { | |
| 65 HelpFormatter().printHelp("$SHORTNAME $name [options] csv_file", options) | |
|
21
ea65ab890f66
More work to support interactive feature.
David Barts <n5jrn@me.com>
parents:
16
diff
changeset
|
66 throw SubcommandException(status = 0) |
| 16 | 67 } |
| 68 } | |
| 69 | |
| 70 private fun extract(): Array<String> { | |
| 71 annotated.iterate { annotated, info -> | |
| 72 if (commandLine.hasOption(info.longName)) { | |
| 73 when { | |
| 74 info.type.isSubtypeOf(BOOLEAN_TYPE) -> | |
| 75 annotated.setter.call(true) | |
| 76 info.type.isSubtypeOf(STRING_TYPE) -> | |
| 77 annotated.setter.call(commandLine.getOptionValue(info.longName)) | |
| 78 info.type.isSubtypeOf(CHAR_TYPE) -> | |
| 79 annotated.setter.call(commandLine.getCharOptionValue(info.longName)) | |
| 80 } | |
| 81 } | |
| 82 } | |
| 83 return commandLine.args | |
| 84 } | |
| 85 | |
| 86 private fun Collection<KCallable<*>>.iterate(block: (KMutableProperty<*>, AnnotationArgumentInfo) -> Unit) = | |
| 87 forEach { | |
| 88 block(it as KMutableProperty<*>, AnnotationArgumentInfo(it)) | |
| 89 } | |
| 90 | |
| 91 private fun CommandLine.getCharOptionValue(name: String): Char { | |
| 92 val optionValue = getOptionValue(name) | |
| 93 when (optionValue.length) { | |
|
21
ea65ab890f66
More work to support interactive feature.
David Barts <n5jrn@me.com>
parents:
16
diff
changeset
|
94 0 -> throw SubcommandException(message = "--$name value must not be empty") |
| 16 | 95 1 -> return optionValue[0] |
|
21
ea65ab890f66
More work to support interactive feature.
David Barts <n5jrn@me.com>
parents:
16
diff
changeset
|
96 else -> throw SubcommandException(message = "--$name value must be a single character") |
| 16 | 97 } |
| 98 } | |
| 99 } | |
| 100 | |
| 101 fun parseInto(name: String, args: Array<String>, into: Any): Array<String> = | |
| 102 AnnotationArgumentParser(name, args, into).parse() |