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// Copyright 2000-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
package com.intellij.configurationStore
import com.intellij.openapi.extensions.AbstractExtensionPointBean
import com.intellij.openapi.options.*
import com.intellij.openapi.project.Project
import com.intellij.openapi.util.io.FileUtil
import com.intellij.project.isDirectoryBased
import com.intellij.util.SmartList
import com.intellij.util.io.sanitizeFileName
import com.intellij.util.isEmpty
import com.intellij.util.lang.CompoundRuntimeException
import com.intellij.util.xmlb.annotations.Attribute
import org.jdom.Element
import java.io.OutputStream
import java.security.MessageDigest
import java.util.concurrent.atomic.AtomicReference
import java.util.function.Function
interface SchemeNameToFileName {
fun schemeNameToFileName(name: String): String
}
val OLD_NAME_CONVERTER: SchemeNameToFileName = object : SchemeNameToFileName {
override fun schemeNameToFileName(name: String) = FileUtil.sanitizeFileName(name, true)
}
val CURRENT_NAME_CONVERTER: SchemeNameToFileName = object : SchemeNameToFileName {
override fun schemeNameToFileName(name: String) = FileUtil.sanitizeFileName(name, false)
}
val MODERN_NAME_CONVERTER: SchemeNameToFileName = object : SchemeNameToFileName {
override fun schemeNameToFileName(name: String) = sanitizeFileName(name)
}
interface SchemeDataHolder<in T> {
/**
* You should call updateDigest() after read on init.
*/
fun read(): Element
fun updateDigest(scheme: T)
fun updateDigest(data: Element?)
}
/**
* A scheme processor can implement this interface to provide a file extension different from default .xml.
* @see SchemeProcessor
*/
interface SchemeExtensionProvider {
/**
* @return The scheme file extension **with a leading dot**, for example ".ext".
*/
val schemeExtension: String
}
// applicable only for LazySchemeProcessor
interface SchemeContentChangedHandler<MUTABLE_SCHEME> {
fun schemeContentChanged(scheme: MUTABLE_SCHEME, name: String, dataHolder: SchemeDataHolder<MUTABLE_SCHEME>)
}
abstract class LazySchemeProcessor<SCHEME, MUTABLE_SCHEME : SCHEME>(private val nameAttribute: String = "name") : SchemeProcessor<SCHEME, MUTABLE_SCHEME>() {
open fun getSchemeKey(attributeProvider: Function<String, String?>, fileNameWithoutExtension: String): String? {
return attributeProvider.apply(nameAttribute)
}
abstract fun createScheme(dataHolder: SchemeDataHolder<MUTABLE_SCHEME>,
name: String,
attributeProvider: Function<in String, String?>,
isBundled: Boolean = false): MUTABLE_SCHEME
override fun writeScheme(scheme: MUTABLE_SCHEME): Element? = (scheme as SerializableScheme).writeScheme()
open fun isSchemeFile(name: CharSequence): Boolean = true
open fun isSchemeDefault(scheme: MUTABLE_SCHEME, digest: ByteArray): Boolean = false
open fun isSchemeEqualToBundled(scheme: MUTABLE_SCHEME): Boolean = false
}
class DigestOutputStream(val digest: MessageDigest) : OutputStream() {
override fun write(b: Int) {
digest.update(b.toByte())
}
override fun write(b: ByteArray, off: Int, len: Int) {
digest.update(b, off, len)
}
override fun toString(): String = "[Digest Output Stream] $digest"
}
fun Element.digest(): ByteArray {
// sha-1 is enough, sha-256 is slower, see https://www.nayuki.io/page/native-hash-functions-for-java
val digest = MessageDigest.getInstance("SHA-1")
serializeElementToBinary(this, DigestOutputStream(digest))
return digest.digest()
}
abstract class SchemeWrapper<out T>(name: String) : ExternalizableSchemeAdapter(), SerializableScheme {
protected abstract val lazyScheme: Lazy<T>
val scheme: T
get() = lazyScheme.value
override fun getSchemeState(): SchemeState = if (lazyScheme.isInitialized()) SchemeState.POSSIBLY_CHANGED else SchemeState.UNCHANGED
init {
this.name = name
}
}
abstract class LazySchemeWrapper<T>(name: String, dataHolder: SchemeDataHolder<SchemeWrapper<T>>, protected val writer: (scheme: T) -> Element) : SchemeWrapper<T>(name) {
protected val dataHolder: AtomicReference<SchemeDataHolder<SchemeWrapper<T>>> = AtomicReference(dataHolder)
final override fun writeScheme(): Element {
val dataHolder = dataHolder.get()
@Suppress("IfThenToElvis")
return if (dataHolder == null) writer(scheme) else dataHolder.read()
}
}
class InitializedSchemeWrapper<out T : Scheme>(scheme: T, private val writer: (scheme: T) -> Element) : SchemeWrapper<T>(scheme.name) {
override val lazyScheme: Lazy<T> = lazyOf(scheme)
override fun writeScheme(): Element = writer(scheme)
}
fun unwrapState(element: Element, project: Project, iprAdapter: SchemeManagerIprProvider?, schemeManager: SchemeManager<*>): Element? {
val data = if (project.isDirectoryBased) element.getChild("settings") else element
iprAdapter?.let {
it.load(data)
schemeManager.reload()
}
return data
}
fun wrapState(element: Element, project: Project): Element {
if (element.isEmpty() || !project.isDirectoryBased) {
element.name = "state"
return element
}
val wrapper = Element("state")
wrapper.addContent(element)
return wrapper
}
class BundledSchemeEP : AbstractExtensionPointBean() {
@Attribute("path")
var path: String? = null
}
fun SchemeManager<*>.save() {
val errors = SmartList<Throwable>()
save(errors)
CompoundRuntimeException.throwIfNotEmpty(errors)
}
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