Avoid possible NPE, fixes #214

gnodet · gnodet · commit 3ba11e9d324f · 2021-07-23T09:54:38.000+02:00
diff --git a/src/main/java/org/fusesource/jansi/AnsiPrintStream.java b/src/main/java/org/fusesource/jansi/AnsiPrintStream.java
@@ -76,7 +76,11 @@ public void install() throws IOException {
     }
 
     public void uninstall() throws IOException {
-        getOut().uninstall();
+        // If the system output stream has been closed, out should be null, so avoid a NPE
+        AnsiOutputStream out = getOut();
+        if (out != null) {
+            out.uninstall();
+        }
     }
 
     @Override

Original file line number	Diff line number	Diff line change
`@@ -76,7 +76,11 @@ public void install() throws IOException {`
`76`	`76`	`}`
`77`	`77`
`78`	`78`	`public void uninstall() throws IOException {`
`79`		`- getOut().uninstall();`
	`79`	`+ // If the system output stream has been closed, out should be null, so avoid a NPE`
	`80`	`+ AnsiOutputStream out = getOut();`
	`81`	`+ if (out != null) {`
	`82`	`+ out.uninstall();`
	`83`	`+ }`
`80`	`84`	`}`
`81`	`85`
`82`	`86`	`@Override`