feat: emoji-ktを追加

build.gradle.kts

@@ -142,6 +142,15 @@ repositories {
             password = project.findProperty("gpr.key") as String? ?: System.getenv("TOKEN")
         }
     }
+    maven {
+        name = "GitHubPackages2"
+        url = uri("https://maven.pkg.github.com/multim-dev/emoji-kt")
+        credentials {
+
+            username = project.findProperty("gpr.user") as String? ?: System.getenv("USERNAME")
+            password = project.findProperty("gpr.key") as String? ?: System.getenv("TOKEN")
+        }
+    }
 }
 
 kotlin {
@@ -205,6 +214,8 @@ dependencies {
     implementation("org.bytedeco:javacv-platform:1.5.9")
     implementation("org.flywaydb:flyway-core")
 
+    implementation("dev.usbharu:emoji-kt:2.0.0")
+
     implementation("io.ktor:ktor-client-logging-jvm:$ktor_version")
 
     testImplementation("org.jetbrains.kotlin:kotlin-test-junit:$kotlin_version")

src/main/kotlin/dev/usbharu/hideout/util/EmojiUtil.kt

@@ -0,0 +1,18 @@
+package dev.usbharu.hideout.util
+
+import Emojis
+
+object EmojiUtil {
+
+
+    val emojiMap by lazy {
+        Emojis.allEmojis
+            .associate { it.code.replace(" ", "-") to it.char }
+            .filterValues { it != "™" }
+
+    }
+
+    fun isEmoji(string: String): Boolean {
+        return emojiMap.any { it.value == string }
+    }
+}

src/test/kotlin/dev/usbharu/hideout/util/EmojiUtilTest.kt

@@ -0,0 +1,41 @@
+package dev.usbharu.hideout.util
+
+import org.assertj.core.api.Assertions.assertThat
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.params.ParameterizedTest
+import org.junit.jupiter.params.provider.ValueSource
+
+class EmojiUtilTest {
+
+    @Test
+    fun 絵文字を判定できる() {
+        val emoji = "❤"
+        val actual = EmojiUtil.isEmoji(emoji)
+
+        assertThat(actual).isTrue()
+    }
+
+    @Test
+    fun ただの文字を判定できる() {
+        val moji = "blobblinkhyper"
+        val actual = EmojiUtil.isEmoji(moji)
+
+        assertThat(actual).isFalse()
+    }
+
+    @ParameterizedTest
+    @ValueSource(strings = ["❤", "🌄", "🤗", "⛺", "🧑‍🤝‍🧑", "🖐🏿"])
+    fun `絵文字判定`(s: String) {
+        val actual = EmojiUtil.isEmoji(s)
+
+        assertThat(actual).isTrue()
+    }
+
+    @ParameterizedTest
+    @ValueSource(strings = ["™", "㍂", "㌠"])
+    fun `文字判定`(s: String) {
+        val actual = EmojiUtil.isEmoji(s)
+
+        assertThat(actual).isFalse()
+    }
+}