Mercurial > cgi-bin > hgweb.cgi > PassMan

annotate src/main/kotlin/name/blackcap/passman/Console.kt @ 21:ea65ab890f66

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More work to support interactive feature.
author David Barts <n5jrn@me.com>
date Tue, 02 Jul 2024 11:27:39 -0700
parents a6cfdffcaa94
children
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0
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1 package name.blackcap.passman
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2
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3 fun readLine(prompt: String): String =
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4 doConsoleIo({ System.console()?.readLine(prompt) }, "unable to read line")
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5
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6 fun getPassword(prompt: String, verify: Boolean = false): CharArray {
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7 while (true) {
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8 val pw1 = _getPassword(prompt)
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9 if (!verify) {
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10 return pw1
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11 }
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12 val pw2 = _getPassword("Verification: ")
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13 if (pw1 contentEquals pw2) {
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14 return pw1
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15 }
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16 error("mismatch, try again")
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17 }
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18 }
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19
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20 fun mustReadLine(prompt: String): String = must({ readLine(prompt) }, { it.isNotEmpty() })
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21
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22 fun mustGetPassword(prompt: String, verify: Boolean = false): CharArray =
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23 must({ getPassword(prompt, verify) }, { it.isNotEmpty() })
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24
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25 fun printPassword(password: CharArray) {
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26 print("Password: ")
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27 password.forEach { print(it) }
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28 println()
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29 }
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30
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31 private fun _getPassword(prompt: String): CharArray =
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32 doConsoleIo({ System.console()?.readPassword(prompt) }, "unable to read password")
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33
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34 private fun <T> must(getter: () -> T, checker: (T) -> Boolean): T {
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35 while (true) {
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36 val got = getter()
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37 if (checker(got)) {
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38 return got
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39 }
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40 error("entry must not be empty, try again")
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41 }
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42 }
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43
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44 private fun <T> doConsoleIo(getter: () -> T?, message: String): T {
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45 val ret = getter() ?: throw ConsoleException(message)
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46 return ret
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47 }
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48
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49 class ConsoleException(message: String, cause: Throwable? = null) : MessagedException(message, cause)