From 728191e896c89ded34228a0985af09eec0a83288 Mon Sep 17 00:00:00 2001
From: Niki Roo <niki@nikiroo.be>
Date: Wed, 3 Jun 2020 15:52:26 +0200
Subject: [PATCH] Scanner hasNext checks

---
 .../fanfix/supported/BasicSupport.java        |  3 ++
 src/be/nikiroo/fanfix/supported/Text.java     | 28 +++++++++++++------
 2 files changed, 22 insertions(+), 9 deletions(-)

diff --git a/src/be/nikiroo/fanfix/supported/BasicSupport.java b/src/be/nikiroo/fanfix/supported/BasicSupport.java
index ff9ecaf..9b56f88 100644
--- a/src/be/nikiroo/fanfix/supported/BasicSupport.java
+++ b/src/be/nikiroo/fanfix/supported/BasicSupport.java
@@ -354,6 +354,9 @@ public abstract class BasicSupport {
 			Scanner scan = new Scanner(in);
 			scan.useDelimiter("\0");
 			try {
+				if(!scan.hasNext())
+					throw new IOException("The given input was empty");
+				
 				return new JSONObject(scan.next());
 			} catch (JSONException e) {
 				throw new IOException(e);
diff --git a/src/be/nikiroo/fanfix/supported/Text.java b/src/be/nikiroo/fanfix/supported/Text.java
index 45d970a..45b761a 100644
--- a/src/be/nikiroo/fanfix/supported/Text.java
+++ b/src/be/nikiroo/fanfix/supported/Text.java
@@ -100,10 +100,12 @@ class Text extends BasicSupport {
 		@SuppressWarnings("resource") // cannot close, or we loose getInput()!
 		Scanner scan = new Scanner(getInput(), "UTF-8");
 		scan.useDelimiter("\\n");
-		scan.next(); // Title
-		scan.next(); // Author (Date)
-		String chapter0 = scan.next(); // empty or Chapter 0
-		while (chapter0.isEmpty()) {
+		if (scan.hasNext())
+			scan.next(); // Title
+		if (scan.hasNext())
+			scan.next(); // Author (Date)
+		String chapter0 = "";
+		while (scan.hasNext() && chapter0.isEmpty()) {
 			chapter0 = scan.next();
 		}
 
@@ -126,15 +128,20 @@ class Text extends BasicSupport {
 		@SuppressWarnings("resource") // cannot close, or we loose getInput()!
 		Scanner scan = new Scanner(getInput(), "UTF-8");
 		scan.useDelimiter("\\n");
-		return scan.next();
+		if (scan.hasNext())
+			return scan.next();
+		return "";
 	}
 
 	private String getAuthor() {
 		@SuppressWarnings("resource") // cannot close, or we loose getInput()!
 		Scanner scan = new Scanner(getInput(), "UTF-8");
 		scan.useDelimiter("\\n");
-		scan.next();
-		String authorDate = scan.next();
+		if (scan.hasNext())
+			scan.next();
+		String authorDate = "";
+		if (scan.hasNext())
+			authorDate = scan.next();
 
 		String author = authorDate;
 		int pos = authorDate.indexOf('(');
@@ -149,8 +156,11 @@ class Text extends BasicSupport {
 		@SuppressWarnings("resource") // cannot close, or we loose getInput()!
 		Scanner scan = new Scanner(getInput(), "UTF-8");
 		scan.useDelimiter("\\n");
-		scan.next();
-		String authorDate = scan.next();
+		if (scan.hasNext())
+			scan.next();
+		String authorDate = "";
+		if (scan.hasNext())
+			authorDate = scan.next();
 
 		String date = "";
 		int pos = authorDate.indexOf('(');
-- 
2.27.0