X-Git-Url: http://git.nikiroo.be/?a=blobdiff_plain;f=src%2Fbe%2Fnikiroo%2Futils%2Fserial%2FImporter.java;h=80a8684bd92f97433faf9d6ece457e0b41fa29be;hb=a6a73de36765b85947ac885529da82d3e7189269;hp=84fb5aae5742f49bcf68cd915906a2b7322a399b;hpb=a359464fcf59af8abc6f69ae0e88e42adc6018df;p=nikiroo-utils.git

diff --git a/src/be/nikiroo/utils/serial/Importer.java b/src/be/nikiroo/utils/serial/Importer.java
index 84fb5aa..80a8684 100644
--- a/src/be/nikiroo/utils/serial/Importer.java
+++ b/src/be/nikiroo/utils/serial/Importer.java
@@ -1,12 +1,16 @@
 package be.nikiroo.utils.serial;
 
 import java.io.IOException;
+import java.io.InputStream;
 import java.lang.reflect.Field;
 import java.util.HashMap;
 import java.util.Map;
-import java.util.Scanner;
+import java.util.zip.GZIPInputStream;
 
-import be.nikiroo.utils.StringUtils;
+import be.nikiroo.utils.IOUtils;
+import be.nikiroo.utils.streams.Base64InputStream;
+import be.nikiroo.utils.streams.NextableInputStream;
+import be.nikiroo.utils.streams.NextableInputStreamStep;
 
 /**
  * A simple class that can accept the output of {@link Exporter} to recreate
@@ -43,7 +47,7 @@ public class Importer {
 	 * content, or a number of lines of it (any given line <b>MUST</b> be
 	 * complete though) and accumulate it with the already present data.
 	 * 
-	 * @param data
+	 * @param in
 	 *            the data to parse
 	 * 
 	 * @return itself so it can be chained
@@ -58,40 +62,55 @@ public class Importer {
 	 *             if a class described in the serialised data cannot be found
 	 * @throws IOException
 	 *             if the content cannot be read (for instance, corrupt data)
+	 * @throws NullPointerException
+	 *             if the stream is empty
 	 */
-	public Importer read(String data) throws NoSuchFieldException,
-			NoSuchMethodException, ClassNotFoundException, IOException {
+	public Importer read(InputStream in) throws NoSuchFieldException,
+			NoSuchMethodException, ClassNotFoundException, IOException,
+			NullPointerException {
+
+		NextableInputStream stream = new NextableInputStream(in,
+				new NextableInputStreamStep('\n'));
 
-		Scanner scan = new Scanner(data);
 		try {
-			scan.useDelimiter("\n");
-			while (scan.hasNext()) {
-				String line = scan.next();
+			if (in == null) {
+				throw new NullPointerException("InputStream is null");
+			}
 
-				if (line.startsWith("ZIP:")) {
-					try {
-						line = StringUtils.unbase64s(
-								line.substring("ZIP:".length()), true);
-					} catch (IOException e) {
-						throw new IOException(
-								"Internal error when decoding ZIP content: input may be corrupt");
+			boolean first = true;
+			while (stream.next()) {
+				if (stream.eof()) {
+					if (first) {
+						throw new NullPointerException(
+								"InputStream empty, normal termination");
 					}
-					read(line);
-				} else if (line.startsWith("B64:")) {
+					return this;
+				}
+				first = false;
+
+				boolean zip = stream.startsWiths("ZIP:");
+				boolean b64 = stream.startsWiths("B64:");
+
+				if (zip || b64) {
+					stream.skip("XXX:".length());
+
+					InputStream decoded = stream.open();
+					if (zip) {
+						decoded = new GZIPInputStream(decoded);
+					}
+					decoded = new Base64InputStream(decoded, false);
+
 					try {
-						line = StringUtils.unbase64s(
-								line.substring("B64:".length()), false);
-					} catch (IOException e) {
-						throw new IOException(
-								"Internal error when decoding B64 content: input may be corrupt");
+						read(decoded);
+					} finally {
+						decoded.close();
 					}
-					read(line);
 				} else {
-					processLine(line);
+					processLine(stream);
 				}
 			}
 		} finally {
-			scan.close();
+			stream.close(false);
 		}
 
 		return this;
@@ -101,7 +120,7 @@ public class Importer {
 	 * Read a single (whole) line of serialised data into this {@link Importer}
 	 * and accumulate it with the already present data.
 	 * 
-	 * @param line
+	 * @param in
 	 *            the line to parse
 	 * 
 	 * @return TRUE if we are just done with one object or sub-object
@@ -117,11 +136,12 @@ public class Importer {
 	 * @throws IOException
 	 *             if the content cannot be read (for instance, corrupt data)
 	 */
-	private boolean processLine(String line) throws NoSuchFieldException,
+	private boolean processLine(InputStream in) throws NoSuchFieldException,
 			NoSuchMethodException, ClassNotFoundException, IOException {
+
 		// Defer to latest child if any
 		if (child != null) {
-			if (child.processLine(line)) {
+			if (child.processLine(in)) {
 				if (currentFieldName != null) {
 					setField(currentFieldName, child.getValue());
 					currentFieldName = null;
@@ -132,6 +152,13 @@ public class Importer {
 			return false;
 		}
 
+		// TODO use the stream, Luke
+		String line = IOUtils.readSmallStream(in);
+
+		if (line.isEmpty()) {
+			return false;
+		}
+
 		if (line.equals("{")) { // START: new child if needed
 			if (link != null) {
 				child = new Importer(map);