From 00fcd0550fcdda621c2e4662f6ddd55ce673b931 Mon Sep 17 00:00:00 2001
From: Gegy
Date: Thu, 24 Jan 2019 14:48:32 +0200
Subject: [WIP] Mapping rework (#91)

* Move packages

* Mapping & entry refactor: first pass

* Fix deobf -> obf tree remapping

* Resolve various issues

* Give all entries the potential for parents and treat inner classes as children

* Deobf UI tree elements

* Tests pass

* Sort mapping output

* Fix delta tracking

* Index separation and first pass for #97

* Keep track of remapped jar index

* Fix child entries not being remapped

* Drop non-root entries

* Track dropped mappings

* Fix enigma mapping ordering

* EntryTreeNode interface

* Small tweaks

* Naive full index remap on rename

* Entries can resolve to more than one root entry

* Support alternative resolution strategies

* Bridge method resolution

* Tests pass

* Fix mappings being used where there are none

* Fix methods with different descriptors being considered unique. closes #89
---
 .../enigma/translation/SignatureUpdater.java       | 92 ++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 src/main/java/cuchaz/enigma/translation/SignatureUpdater.java

(limited to 'src/main/java/cuchaz/enigma/translation/SignatureUpdater.java')

diff --git a/src/main/java/cuchaz/enigma/translation/SignatureUpdater.java b/src/main/java/cuchaz/enigma/translation/SignatureUpdater.java
new file mode 100644
index 0000000..3783053
--- /dev/null
+++ b/src/main/java/cuchaz/enigma/translation/SignatureUpdater.java
@@ -0,0 +1,92 @@
+/*******************************************************************************
+ * Copyright (c) 2015 Jeff Martin.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the GNU Lesser General Public
+ * License v3.0 which accompanies this distribution, and is available at
+ * http://www.gnu.org/licenses/lgpl.html
+ * <p>
+ * Contributors:
+ * Jeff Martin - initial API and implementation
+ ******************************************************************************/
+
+package cuchaz.enigma.translation;
+
+import com.google.common.collect.Lists;
+
+import java.io.IOException;
+import java.io.StringReader;
+import java.util.List;
+
+public class SignatureUpdater {
+
+	public static String update(String signature, ClassNameUpdater updater) {
+		try {
+			StringBuilder buf = new StringBuilder();
+
+			// read the signature character-by-character
+			StringReader reader = new StringReader(signature);
+			int i;
+			while ((i = reader.read()) != -1) {
+				char c = (char) i;
+
+				// does this character start a class name?
+				if (c == 'L') {
+					// update the class name and add it to the buffer
+					buf.append('L');
+					String className = readClass(reader);
+					if (className == null) {
+						throw new IllegalArgumentException("Malformed signature: " + signature);
+					}
+					buf.append(updater.update(className));
+					buf.append(';');
+				} else {
+					// copy the character into the buffer
+					buf.append(c);
+				}
+			}
+
+			return buf.toString();
+		} catch (IOException ex) {
+			// I'm pretty sure a StringReader will never throw one of these
+			throw new Error(ex);
+		}
+	}
+
+	private static String readClass(StringReader reader) throws IOException {
+		// read all the characters in the buffer until we hit a ';'
+		// remember to treat generics correctly
+		StringBuilder buf = new StringBuilder();
+		int depth = 0;
+		int i;
+		while ((i = reader.read()) != -1) {
+			char c = (char) i;
+
+			if (c == '<') {
+				depth++;
+			} else if (c == '>') {
+				depth--;
+			} else if (depth == 0) {
+				if (c == ';') {
+					return buf.toString();
+				} else {
+					buf.append(c);
+				}
+			}
+		}
+
+		return null;
+	}
+
+	public static List<String> getClasses(String signature) {
+		final List<String> classNames = Lists.newArrayList();
+		update(signature, className -> {
+			classNames.add(className);
+			return className;
+		});
+		return classNames;
+	}
+
+	public interface ClassNameUpdater {
+		String update(String className);
+	}
+}
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