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PasswordBuilder: use runCatching to replace exception handling

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Signed-off-by: Harsh Shandilya <me@msfjarvis.dev>
This commit is contained in:
Harsh Shandilya 2020-09-05 05:11:25 +05:30
parent 85d1ef1ad1
commit 9bc1d59dd2
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GPG Key ID: 366D7BBAD1031E80
2 changed files with 40 additions and 43 deletions
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32
app/src/main/java/com/zeapo/pwdstore/pwgenxkpwd/PasswordBuilder.kt
View File

@ -5,12 +5,13 @@
package com.zeapo.pwdstore.pwgenxkpwd
import android.content.Context
import com.github.michaelbull.result.Result
import com.github.michaelbull.result.runCatching
import com.zeapo.pwdstore.R
import com.zeapo.pwdstore.pwgen.PasswordGenerator.PasswordGeneratorException
import com.zeapo.pwdstore.pwgen.secureRandomCharacter
import com.zeapo.pwdstore.pwgen.secureRandomElement
import com.zeapo.pwdstore.pwgen.secureRandomNumber
import java.io.IOException
import java.util.Locale
class PasswordBuilder(ctx: Context) {
@ -83,8 +84,7 @@ class PasswordBuilder(ctx: Context) {
}
@OptIn(ExperimentalStdlibApi::class)
@Throws(PasswordGeneratorException::class)
fun create(): String {
fun create(): Result<String, Throwable> {
val wordBank = mutableListOf<String>()
val password = StringBuilder()
@ -94,7 +94,7 @@ class PasswordBuilder(ctx: Context) {
password.append(separator)
}
}
try {
return runCatching {
val dictionary = XkpwdDictionary(context)
val words = dictionary.words
for (wordLength in minWordLength..maxWordLength) {
@ -119,22 +119,20 @@ class PasswordBuilder(ctx: Context) {
password.append(separator)
}
}
} catch (e: IOException) {
throw PasswordGeneratorException("Failed generating password!")
}
if (numDigits != 0) {
if (isAppendNumberSeparator) {
password.append(separator)
if (numDigits != 0) {
if (isAppendNumberSeparator) {
password.append(separator)
}
password.append(generateRandomNumberSequence(numDigits))
}
password.append(generateRandomNumberSequence(numDigits))
}
if (numSymbols != 0) {
if (isAppendSymbolsSeparator) {
password.append(separator)
if (numSymbols != 0) {
if (isAppendSymbolsSeparator) {
password.append(separator)
}
password.append(generateRandomSymbolSequence(numSymbols))
}
password.append(generateRandomSymbolSequence(numSymbols))
password.toString()
}
return password.toString()
}
companion object {

51
app/src/main/java/com/zeapo/pwdstore/ui/dialogs/XkPasswordGeneratorDialogFragment.kt
View File

@ -16,12 +16,15 @@ import androidx.appcompat.widget.AppCompatTextView
import androidx.core.content.edit
import androidx.fragment.app.DialogFragment
import com.github.ajalt.timberkt.Timber.tag
import com.github.michaelbull.result.fold
import com.github.michaelbull.result.getOr
import com.github.michaelbull.result.runCatching
import com.google.android.material.dialog.MaterialAlertDialogBuilder
import com.zeapo.pwdstore.R
import com.zeapo.pwdstore.databinding.FragmentXkpwgenBinding
import com.zeapo.pwdstore.pwgen.PasswordGenerator
import com.zeapo.pwdstore.pwgenxkpwd.CapsType
import com.zeapo.pwdstore.pwgenxkpwd.PasswordBuilder
import com.zeapo.pwdstore.utils.getString
/** A placeholder fragment containing a simple view. */
class XkPasswordGeneratorDialogFragment : DialogFragment() {
@ -41,19 +44,13 @@ class XkPasswordGeneratorDialogFragment : DialogFragment() {
prefs = callingActivity.getSharedPreferences("PasswordGenerator", Context.MODE_PRIVATE)
val previousStoredCapStyle: String = try {
prefs.getString(PREF_KEY_CAPITALS_STYLE, DEFAULT_CAPS_STYLE)!!
} catch (e: Exception) {
tag("xkpw").e(e)
DEFAULT_CAPS_STYLE
}
val previousStoredCapStyle: String = runCatching {
prefs.getString(PREF_KEY_CAPITALS_STYLE)!!
}.getOr(DEFAULT_CAPS_STYLE)
val lastCapitalsStyleIndex: Int = try {
val lastCapitalsStyleIndex: Int = runCatching {
CapsType.valueOf(previousStoredCapStyle).ordinal
} catch (e: Exception) {
tag("xkpw").e(e)
DEFAULT_CAPS_INDEX
}
}.getOr(DEFAULT_CAPS_INDEX)
binding.xkCapType.setSelection(lastCapitalsStyleIndex)
binding.xkNumWords.setText(prefs.getString(PREF_KEY_NUM_WORDS, DEFAULT_NUMBER_OF_WORDS))
@ -87,20 +84,22 @@ class XkPasswordGeneratorDialogFragment : DialogFragment() {
}
private fun makeAndSetPassword(passwordText: AppCompatTextView) {
try {
passwordText.text = PasswordBuilder(requireContext())
.setNumberOfWords(Integer.valueOf(binding.xkNumWords.text.toString()))
.setMinimumWordLength(DEFAULT_MIN_WORD_LENGTH)
.setMaximumWordLength(DEFAULT_MAX_WORD_LENGTH)
.setSeparator(binding.xkSeparator.text.toString())
.appendNumbers(binding.xkNumberSymbolMask.text!!.count { c -> c == EXTRA_CHAR_PLACEHOLDER_DIGIT })
.appendSymbols(binding.xkNumberSymbolMask.text!!.count { c -> c == EXTRA_CHAR_PLACEHOLDER_SYMBOL })
.setCapitalization(CapsType.valueOf(binding.xkCapType.selectedItem.toString())).create()
} catch (e: PasswordGenerator.PasswordGeneratorException) {
Toast.makeText(requireActivity(), e.message, Toast.LENGTH_SHORT).show()
tag("xkpw").e(e, "failure generating xkpasswd")
passwordText.text = FALLBACK_ERROR_PASS
}
PasswordBuilder(requireContext())
.setNumberOfWords(Integer.valueOf(binding.xkNumWords.text.toString()))
.setMinimumWordLength(DEFAULT_MIN_WORD_LENGTH)
.setMaximumWordLength(DEFAULT_MAX_WORD_LENGTH)
.setSeparator(binding.xkSeparator.text.toString())
.appendNumbers(binding.xkNumberSymbolMask.text!!.count { c -> c == EXTRA_CHAR_PLACEHOLDER_DIGIT })
.appendSymbols(binding.xkNumberSymbolMask.text!!.count { c -> c == EXTRA_CHAR_PLACEHOLDER_SYMBOL })
.setCapitalization(CapsType.valueOf(binding.xkCapType.selectedItem.toString())).create()
.fold(
success = { passwordText.text = it },
failure = { e ->
Toast.makeText(requireActivity(), e.message, Toast.LENGTH_SHORT).show()
tag("xkpw").e(e, "failure generating xkpasswd")
passwordText.text = FALLBACK_ERROR_PASS
},
)
}
private fun setPreferences() {