1 files changed, 70 insertions, 0 deletions
diff --git a/src/main/kotlin/moe/nea/firmament/util/textutil.kt b/src/main/kotlin/moe/nea/firmament/util/textutil.kt
new file mode 100644
index 0000000..b12d6c4
--- /dev/null
+++ b/src/main/kotlin/moe/nea/firmament/util/textutil.kt
@@ -0,0 +1,70 @@
+package moe.nea.firmament.util
+
+import net.minecraft.text.LiteralTextContent
+import net.minecraft.text.Text
+import net.minecraft.text.TextContent
+import moe.nea.firmament.Firmament
+
+
+class TextMatcher(text: Text) {
+    data class State(
+        var iterator: MutableList<Text>,
+        var currentText: Text?,
+        var offset: Int,
+        var textContent: String,
+    )
+
+    var state = State(
+        mutableListOf(text),
+        null,
+        0,
+        ""
+    )
+
+    fun pollChunk(): Boolean {
+        val firstOrNull = state.iterator.removeFirstOrNull() ?: return false
+        state.offset = 0
+        state.currentText = firstOrNull
+        state.textContent = when (val content = firstOrNull.content) {
+            is LiteralTextContent -> content.string
+            TextContent.EMPTY -> ""
+            else -> {
+                Firmament.logger.warn("TextContent of type ${content.javaClass} not understood.")
+                return false
+            }
+        }
+        state.iterator.addAll(0, firstOrNull.siblings)
+        return true
+    }
+
+    fun pollChunks(): Boolean {
+        while (state.offset !in state.textContent.indices) {
+            if (!pollChunk()) {
+                return false
+            }
+        }
+        return true
+    }
+
+    fun pollChar(): Char? {
+        if (!pollChunks()) return null
+        return state.textContent[state.offset++]
+    }
+
+
+    fun expectString(string: String): Boolean {
+        var found = ""
+        while (found.length < string.length) {
+            if (!pollChunks()) return false
+            val takeable = state.textContent.drop(state.offset).take(string.length - found.length)
+            state.offset += takeable.length
+            found += takeable
+        }
+        return found == string
+    }
+}
+
+
+val Text.unformattedString
+    get() = string.replace("§.".toRegex(), "")
+