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-rw-r--r--src/eu/siacs/conversations/xml/TagWriter.java9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/eu/siacs/conversations/xml/TagWriter.java b/src/eu/siacs/conversations/xml/TagWriter.java
index d945b47b..40d5b328 100644
--- a/src/eu/siacs/conversations/xml/TagWriter.java
+++ b/src/eu/siacs/conversations/xml/TagWriter.java
@@ -47,18 +47,27 @@ public class TagWriter {
}
public TagWriter beginDocument() throws IOException {
+ if (outputStream==null) {
+ throw new IOException("output stream was null");
+ }
outputStream.write("<?xml version='1.0'?>");
outputStream.flush();
return this;
}
public TagWriter writeTag(Tag tag) throws IOException {
+ if (outputStream==null) {
+ throw new IOException("output stream was null");
+ }
outputStream.write(tag.toString());
outputStream.flush();
return this;
}
public TagWriter writeElement(Element element) throws IOException {
+ if (outputStream==null) {
+ throw new IOException("output stream was null");
+ }
outputStream.write(element.toString());
outputStream.flush();
return this;