From 1b53ec56aef90b38423a2c3c8445df8495ea94c5 Mon Sep 17 00:00:00 2001
From: Devan-Kerman <dev.sel20@gmail.com>
Date: Thu, 16 Jun 2022 22:49:21 -0500
Subject: [PATCH] allow adding single files to input

---
 .../fabricmc/tinyremapper/TinyRemapper.java   | 40 +++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/src/main/java/net/fabricmc/tinyremapper/TinyRemapper.java b/src/main/java/net/fabricmc/tinyremapper/TinyRemapper.java
index a7f0c090..c3a9429f 100644
--- a/src/main/java/net/fabricmc/tinyremapper/TinyRemapper.java
+++ b/src/main/java/net/fabricmc/tinyremapper/TinyRemapper.java
@@ -379,6 +379,22 @@ public CompletableFuture<?> readClassPathAsync(final Path... inputs) {
 
 		return ret;
 	}
+	
+	public void readClassPathFile(Path file) {
+		readSingleClass(false, null, file);
+	}
+	
+	public void readClasspathFile(InputTag tag, Path file) {
+		readSingleClass(false, tag, file);
+	}
+	
+	public void readInputFile(Path file) {
+		readSingleClass(true, null, file);
+	}
+	
+	public void readInputFile(InputTag tag, Path file) {
+		readSingleClass(true, tag, file);
+	}
 
 	private CompletableFuture<List<ClassInstance>> read(Path[] inputs, boolean isInput, InputTag tag) {
 		InputTag[] tags = singleInputTags.get().get(tag);
@@ -426,6 +442,30 @@ private CompletableFuture<List<ClassInstance>> read(Path[] inputs, boolean isInp
 			assert dirty;
 		});
 	}
+	
+	private void readSingleClass(boolean isInput, InputTag tag, Path file) {
+		try {
+			InputTag[] tags = singleInputTags.get().get(tag);
+			List<FileSystemReference> references = new ArrayList<>();
+			List<ClassInstance> instance = readFile(file, isInput, tags, file.getRoot(), references);
+			for(FileSystemReference reference : references) {
+				reference.close();
+			}
+			
+			if (!dirty) {
+				dirty = true;
+				for (MrjState state : mrjStates.values()) {
+					state.dirty = true;
+				}
+			}
+			
+			for(ClassInstance inst : instance) {
+				addClass(inst, readClasses, true);
+			}
+		} catch (IOException | URISyntaxException e) {
+			throw new RuntimeException(e);
+		}
+	}
 
 	private static void addClass(ClassInstance cls, Map<String, ClassInstance> out, boolean isVersionAware) {
 		// two different MRJ version will not cause warning if isVersionAware is true