fix: Improve line endings in the output files

https://github.com/plantuml/plantuml/pull/1183

src/net/sourceforge/plantuml/AbstractPSystem.java

@@ -105,14 +105,14 @@ public abstract class AbstractPSystem implements Diagram {
 	}
 
 	final public String getMetadata() {
-		if (source == null) {
+		if (source == null) 
 			return getVersion();
-		}
-		final String rawString = source.getRawString();
-		final String plainString = source.getPlainString();
-		if (rawString != null && rawString.equals(plainString)) {
+		
+		final String rawString = source.getRawString("\n");
+		final String plainString = source.getPlainString("\n");
+		if (rawString != null && rawString.equals(plainString)) 
 			return rawString + BackSlash.NEWLINE + getVersion();
-		}
+		
 		return rawString + BackSlash.NEWLINE + plainString + BackSlash.NEWLINE + getVersion();
 	}
 
@@ -121,9 +121,9 @@ public abstract class AbstractPSystem implements Diagram {
 	}
 
 	final public long seed() {
-		if (source == null) {
+		if (source == null) 
 			return 42;
-		}
+		
 		return getSource().seed();
 	}
 
@@ -150,9 +150,9 @@ public abstract class AbstractPSystem implements Diagram {
 	}
 
 	public DisplayPositionned getTitle() {
-		if (source == null) {
+		if (source == null) 
 			return DisplayPositioned.single(Display.empty(), HorizontalAlignment.CENTER, VerticalAlignment.TOP);
-		}
+		
 		return DisplayPositioned.single(source.getTitle(), HorizontalAlignment.CENTER, VerticalAlignment.TOP);
 	}
 

src/net/sourceforge/plantuml/BlockUml.java

@@ -89,7 +89,7 @@ public class BlockUml {
 	// ::comment when __CORE__
 	public String getEncodedUrl() throws IOException {
 		final Transcoder transcoder = TranscoderUtil.getDefaultTranscoder();
-		final String source = getDiagram().getSource().getPlainString();
+		final String source = getDiagram().getSource().getPlainString("\n");
 		final String encoded = transcoder.encode(source);
 		return encoded;
 	}

src/net/sourceforge/plantuml/UmlDiagram.java

@@ -223,7 +223,7 @@ public abstract class UmlDiagram extends TitledDiagram implements Diagram, Annot
 		if (source == null)
 			return "";
 
-		return source.getPlainString();
+		return source.getPlainString("\n");
 	}
 
 	static private List<String> getFailureText1(Throwable exception, String graphvizVersion, String textDiagram) {

src/net/sourceforge/plantuml/core/UmlSource.java

@@ -160,32 +160,30 @@ final public class UmlSource {
 //	}
 
 	/**
-	 * Return the source as a single String with <code>\n</code> as line separator.
+	 * Return the source as a single String.
 	 *
 	 * @return the whole diagram source
 	 */
-	public String getPlainString() {
+	public String getPlainString(String separator) {
 		final StringBuilder sb = new StringBuilder();
 		for (StringLocated s : source) {
 			sb.append(s.getString());
-			sb.append('\r');
-			sb.append(BackSlash.CHAR_NEWLINE);
+			sb.append(separator);
 		}
 		return sb.toString();
 	}
 
-	public String getRawString() {
+	public String getRawString(String separator) {
 		final StringBuilder sb = new StringBuilder();
 		for (StringLocated s : rawSource) {
 			sb.append(s.getString());
-			sb.append('\r');
-			sb.append(BackSlash.CHAR_NEWLINE);
+			sb.append(separator);
 		}
 		return sb.toString();
 	}
 
 	public long seed() {
-		return StringUtils.seed(getPlainString());
+		return StringUtils.seed(getPlainString("\n"));
 	}
 
 	public String getLine(LineLocation n) {

src/net/sourceforge/plantuml/ditaa/PSystemDitaa.java

@@ -109,7 +109,7 @@ public class PSystemDitaa extends AbstractPSystem {
 	final protected ImageData exportDiagramNow(OutputStream os, int num, FileFormatOption fileFormat)
 			throws IOException {
 		if (fileFormat.getFileFormat() == FileFormat.ATXT) {
-			os.write(getSource().getPlainString().getBytes());
+			os.write(getSource().getPlainString(BackSlash.lineSeparator()).getBytes());
 			return ImageDataSimple.ok();
 		}
 

src/net/sourceforge/plantuml/project/GanttDiagram.java

@@ -113,6 +113,7 @@ import net.sourceforge.plantuml.style.SName;
 import net.sourceforge.plantuml.style.Style;
 import net.sourceforge.plantuml.style.StyleSignatureBasic;
 import net.sourceforge.plantuml.svek.GraphvizCrash;
+import net.sourceforge.plantuml.text.BackSlash;
 
 public class GanttDiagram extends TitledDiagram implements ToTaskDraw, WithSprite {
 
@@ -256,7 +257,8 @@ public class GanttDiagram extends TitledDiagram implements ToTaskDraw, WithSprit
 
 				} catch (Throwable t) {
 					Logme.error(t);
-					final UDrawable crash = new GraphvizCrash(getSource().getPlainString(), false, t);
+					final UDrawable crash = new GraphvizCrash(getSource().getPlainString(BackSlash.lineSeparator()),
+							false, t);
 					crash.drawU(ug);
 
 				}

src/net/sourceforge/plantuml/svek/GeneralImageBuilder.java

@@ -122,6 +122,7 @@ import net.sourceforge.plantuml.svek.image.EntityImageStateEmptyDescription;
 import net.sourceforge.plantuml.svek.image.EntityImageSynchroBar;
 import net.sourceforge.plantuml.svek.image.EntityImageTips;
 import net.sourceforge.plantuml.svek.image.EntityImageUseCase;
+import net.sourceforge.plantuml.text.BackSlash;
 import net.sourceforge.plantuml.text.Guillemet;
 import net.sourceforge.plantuml.utils.Log;
 
@@ -455,11 +456,12 @@ public final class GeneralImageBuilder {
 		try {
 			svg = dotStringFactory.getSvg(basefile, dotStrings);
 		} catch (IOException e) {
-			return new GraphvizCrash(source.getPlainString(), GraphvizUtils.graphviz244onWindows(), e);
+			return new GraphvizCrash(source.getPlainString(BackSlash.lineSeparator()),
+					GraphvizUtils.graphviz244onWindows(), e);
 		}
 		if (svg.length() == 0)
-			return new GraphvizCrash(source.getPlainString(), GraphvizUtils.graphviz244onWindows(),
-					new EmptySvgException());
+			return new GraphvizCrash(source.getPlainString(BackSlash.lineSeparator()),
+					GraphvizUtils.graphviz244onWindows(), new EmptySvgException());
 
 		final String graphvizVersion = extractGraphvizVersion(svg);
 		try {
@@ -469,7 +471,8 @@ public final class GeneralImageBuilder {
 			return result;
 		} catch (Exception e) {
 			Log.error("Exception " + e);
-			throw new UnparsableGraphvizException(e, graphvizVersion, svg, source.getPlainString());
+			throw new UnparsableGraphvizException(e, graphvizVersion, svg,
+					source.getPlainString(BackSlash.lineSeparator()));
 		}
 		// ::done
 		// ::uncomment when __CORE__

src/net/sourceforge/plantuml/text/BackSlash.java

@@ -47,6 +47,10 @@ public class BackSlash {
 	public static final String BS_BS_N = "\\n";
 	public static final String NEWLINE = "\n";
 	public static final char CHAR_NEWLINE = '\n';
+	
+	public static final String lineSeparator() {
+		return System.lineSeparator();
+	}
 
 	public static char hiddenNewLine() {
 		return StringUtils.PRIVATE_BLOCK + BackSlash.CHAR_NEWLINE;
@@ -67,9 +71,9 @@ public class BackSlash {
 	}
 
 	public static List<String> getWithNewlines(CharSequence s) {
-		if (s == null) {
+		if (s == null) 
 			return null;
-		}
+		
 		final List<String> result = new ArrayList<>();
 		final StringBuilder current = new StringBuilder();
 		for (int i = 0; i < s.length(); i++) {
@@ -94,9 +98,9 @@ public class BackSlash {
 	}
 
 	public static String translateBackSlashes(CharSequence s) {
-		if (s == null) {
+		if (s == null) 
 			return null;
-		}
+		
 		// final String tmps = s.toString();
 		// if (tmps.indexOf('\\') == -1) {
 		// return tmps;
@@ -121,24 +125,24 @@ public class BackSlash {
 	}
 
 	public static String untranslateBackSlashes(CharSequence s) {
-		if (s == null) {
+		if (s == null) 
 			return null;
-		}
+		
 		final StringBuilder result = new StringBuilder();
 		for (int i = 0; i < s.length(); i++) {
 			char c = s.charAt(i);
-			if (c > StringUtils.PRIVATE_BLOCK && c < '\uE07F') {
+			if (c > StringUtils.PRIVATE_BLOCK && c < '\uE07F') 
 				c = (char) (c - StringUtils.PRIVATE_BLOCK);
-			}
+			
 			result.append(c);
 		}
 		return result.toString();
 	}
 
 	private static char translateChar(char c) {
-		if (c > 128) {
+		if (c > 128) 
 			throw new IllegalArgumentException();
-		}
+		
 		return (char) (StringUtils.PRIVATE_BLOCK + c);
 	}
 

test/nonreg/simple/A0000_TestResult.java

@@ -7,7 +7,7 @@ public class A0000_TestResult {
 DPI: 96
 dimension: [ 185.5185 ; 113.0000 ]
 scaleFactor: 1.0000
-seed: 5605069588648637213
+seed: 7067927655347766828
 svgLinkTarget: _top
 hoverPathColorRGB: null
 preserveAspectRatio: none

test/nonreg/simple/A0001_TestResult.java

@@ -7,7 +7,7 @@ public class A0001_TestResult {
 DPI: 96
 dimension: [ 296.7331 ; 285.0000 ]
 scaleFactor: 1.0000
-seed: -1212656935193060805
+seed: 1230863714434809965
 svgLinkTarget: _top
 hoverPathColorRGB: null
 preserveAspectRatio: none

test/nonreg/simple/A0002_TestResult.java

@@ -7,7 +7,7 @@ public class A0002_TestResult {
 DPI: 96
 dimension: [ 660.1096 ; 994.5000 ]
 scaleFactor: 1.0000
-seed: -9181376250803721714
+seed: -2543044357581316352
 svgLinkTarget: _top
 hoverPathColorRGB: null
 preserveAspectRatio: none

test/nonreg/simple/A0003_TestResult.java

@@ -7,7 +7,7 @@ public class A0003_TestResult {
 DPI: 96
 dimension: [ 367.7447 ; 76.0000 ]
 scaleFactor: 2.0000
-seed: -6040919743496430850
+seed: 2061842952546013393
 svgLinkTarget: _top
 hoverPathColorRGB: null
 preserveAspectRatio: none

test/nonreg/simple/A0004_TestResult.java

@@ -7,7 +7,7 @@ public class A0004_TestResult {
 DPI: 96
 dimension: [ 550.6156 ; 680.0000 ]
 scaleFactor: 1.0000
-seed: 6985134683589840646
+seed: -1093380870564056548
 svgLinkTarget: _top
 hoverPathColorRGB: null
 preserveAspectRatio: none

test/nonreg/simple/A0005_TestResult.java

@@ -7,7 +7,7 @@ public class A0005_TestResult {
 DPI: 96
 dimension: [ 134.0935 ; 286.0000 ]
 scaleFactor: 1.0000
-seed: 1145907385572836867
+seed: -2035695693520640443
 svgLinkTarget: _top
 hoverPathColorRGB: null
 preserveAspectRatio: none

test/nonreg/simple/A0006_TestResult.java

@@ -7,7 +7,7 @@ public class A0006_TestResult {
 DPI: 96
 dimension: [ 149.3989 ; 231.0000 ]
 scaleFactor: 1.0000
-seed: -2375783792654745998
+seed: -967197275408610478
 svgLinkTarget: _top
 hoverPathColorRGB: null
 preserveAspectRatio: none