From 8a2c8a9ad3f6f0bd8f4c529ba9fb440a7bf39f84 Mon Sep 17 00:00:00 2001
From: Jan Bliznicenko <jan.bliznicenko@fit.cvut.cz>
Date: Tue, 9 Jun 2020 15:55:39 +0200
Subject: [PATCH] writing line breaks

---
 repository/OP-XMI/OPXMIWriterVisitor.class.st |  5 ++--
 ...PXMLPrettyPrintingWriterFormatter.class.st | 27 +++++++++++++++++++
 2 files changed, 30 insertions(+), 2 deletions(-)
 create mode 100644 repository/OP-XMI/OPXMLPrettyPrintingWriterFormatter.class.st

diff --git a/repository/OP-XMI/OPXMIWriterVisitor.class.st b/repository/OP-XMI/OPXMIWriterVisitor.class.st
index 7f1367b..18518db 100644
--- a/repository/OP-XMI/OPXMIWriterVisitor.class.st
+++ b/repository/OP-XMI/OPXMIWriterVisitor.class.st
@@ -4,7 +4,7 @@ Class {
 	#instVars : [
 		'writer'
 	],
-	#category : 'OP-XMI-Writer'
+	#category : #'OP-XMI-Writer'
 }
 
 { #category : #accessing }
@@ -16,7 +16,8 @@ OPXMIWriterVisitor >> contents [
 OPXMIWriterVisitor >> initialize [
 	super initialize.
 	writer := XMLWriter new.
-	writer enablePrettyPrinting.
+	writer formatter: OPXMLPrettyPrintingWriterFormatter new.
+	writer lineBreak: '&#10;'.
 	writer xml encoding: 'UTF-8'
 ]
 
diff --git a/repository/OP-XMI/OPXMLPrettyPrintingWriterFormatter.class.st b/repository/OP-XMI/OPXMLPrettyPrintingWriterFormatter.class.st
new file mode 100644
index 0000000..ec0ae3f
--- /dev/null
+++ b/repository/OP-XMI/OPXMLPrettyPrintingWriterFormatter.class.st
@@ -0,0 +1,27 @@
+Class {
+	#name : #OPXMLPrettyPrintingWriterFormatter,
+	#superclass : #XMLPrettyPrintingWriterFormatter,
+	#instVars : [
+		'lineBreak'
+	],
+	#category : #'OP-XMI-Writer'
+}
+
+{ #category : #writing }
+OPXMLPrettyPrintingWriterFormatter >> lineBreak: aCharacterOrString [
+	lineBreak := aCharacterOrString asString
+]
+
+{ #category : #writing }
+OPXMLPrettyPrintingWriterFormatter >> writeLineBreak [
+	self writer atBeginning
+		ifFalse: [ self writer nextPutAll: lineBreak.
+			(self currentIndentLevel > 0 and: [ self indentString size > 0 ])
+				ifTrue: [ self writeIndent ] ]
+]
+
+{ #category : #writing }
+OPXMLPrettyPrintingWriterFormatter >> writer: aWriter [
+	super writer: aWriter.
+	lineBreak ifNil: [ lineBreak := aWriter lineBreak ]
+]