refactor: encapsulate all registry reading operations under CCRegistry

Author: lppedd

src/main/kotlin/com/github/lppedd/cc/CCRegistry.kt

@@ -18,4 +18,10 @@ internal object CCRegistry {
       else -> Locale.getDefault()
     }
   }
+
+  /**
+   * Returns whether support for inspecting the VCS log is enabled.
+   */
+  fun isVcsSupportEnabled(): Boolean =
+    Registry.`is`(CC.Registry.VcsEnabled, false)
 }

src/main/kotlin/com/github/lppedd/cc/vcs/InternalRecentCommitsService.kt

@@ -1,14 +1,13 @@
 package com.github.lppedd.cc.vcs
 
-import com.github.lppedd.cc.CC
+import com.github.lppedd.cc.CCRegistry
 import com.github.lppedd.cc.filterNotBlank
 import com.github.lppedd.cc.parser.CCParser
 import com.github.lppedd.cc.parser.FooterTokens
 import com.github.lppedd.cc.parser.ValidToken
 import com.github.lppedd.cc.trim
 import com.intellij.openapi.components.service
 import com.intellij.openapi.project.Project
-import com.intellij.openapi.util.registry.Registry
 import com.intellij.openapi.vcs.VcsConfiguration
 import com.intellij.vcs.log.VcsCommitMetadata
 import kotlin.math.max
@@ -74,7 +73,7 @@ internal class InternalRecentCommitsService(private val project: Project) : Rece
   }
 
   private fun getOrderedVcsCommitMessages(): Collection<String> {
-    if (!Registry.`is`(CC.Registry.VcsEnabled, false)) {
+    if (!CCRegistry.isVcsSupportEnabled()) {
       return emptyList()
     }
 

src/main/kotlin/com/github/lppedd/cc/vcs/VcsCommitTokenProvider.kt

@@ -1,17 +1,13 @@
 package com.github.lppedd.cc.vcs
 
-import com.github.lppedd.cc.CC
+import com.github.lppedd.cc.*
 import com.github.lppedd.cc.api.*
-import com.github.lppedd.cc.filterNotBlank
-import com.github.lppedd.cc.filterNotEmpty
 import com.github.lppedd.cc.parser.CCParser
 import com.github.lppedd.cc.parser.CommitTokens
 import com.github.lppedd.cc.parser.FooterTokens
 import com.github.lppedd.cc.parser.ValidToken
-import com.github.lppedd.cc.trim
 import com.intellij.openapi.components.service
 import com.intellij.openapi.project.Project
-import com.intellij.openapi.util.registry.Registry
 import javax.swing.Icon
 import kotlin.text.RegexOption.MULTILINE
 
@@ -129,7 +125,7 @@ internal class VcsCommitTokenProvider(project: Project)
       .filterNotEmpty()
 
   private fun getOrderedVcsCommitMessages(): Sequence<String> {
-    if (!Registry.`is`(CC.Registry.VcsEnabled, false)) {
+    if (!CCRegistry.isVcsSupportEnabled()) {
       return emptySequence()
     }
 

src/main/kotlin/com/github/lppedd/cc/vcs/VcsStartupActivity.kt

@@ -1,12 +1,11 @@
 package com.github.lppedd.cc.vcs
 
-import com.github.lppedd.cc.CC
+import com.github.lppedd.cc.CCRegistry
 import com.intellij.openapi.application.ApplicationManager
 import com.intellij.openapi.components.service
 import com.intellij.openapi.project.DumbAware
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.startup.ProjectActivity
-import com.intellij.openapi.util.registry.Registry
 import com.intellij.openapi.vcs.ProjectLevelVcsManager
 import com.intellij.openapi.vcs.VcsListener
 
@@ -16,7 +15,7 @@ import com.intellij.openapi.vcs.VcsListener
 internal class VcsStartupActivity : ProjectActivity, DumbAware {
   override suspend fun execute(project: Project) {
     val vcsConfigListener = VcsListener {
-      if (Registry.`is`(CC.Registry.VcsEnabled, false)) {
+      if (CCRegistry.isVcsSupportEnabled()) {
         ApplicationManager.getApplication().executeOnPooledThread {
           val vcsHandler = project.service<VcsService>()
           vcsHandler.refresh()