X-Git-Url: https://git.argeo.org/?a=blobdiff_plain;f=org.argeo.cms%2Fsrc%2Forg%2Fargeo%2Fcms%2Futil%2FStreamUtils.java;fp=org.argeo.cms%2Fsrc%2Forg%2Fargeo%2Fcms%2Futil%2FStreamUtils.java;h=a589e739af389b3bf0ef22b5cc1f811acd124a62;hb=54df376a9c2dd458a82eaa09bfbb718fe699dd0d;hp=0000000000000000000000000000000000000000;hpb=3c1cdc594d954520b14646102b366290bdad58c7;p=lgpl%2Fargeo-commons.git

diff --git a/org.argeo.cms/src/org/argeo/cms/util/StreamUtils.java b/org.argeo.cms/src/org/argeo/cms/util/StreamUtils.java
new file mode 100644
index 000000000..a589e739a
--- /dev/null
+++ b/org.argeo.cms/src/org/argeo/cms/util/StreamUtils.java
@@ -0,0 +1,98 @@
+package org.argeo.cms.util;
+
+import java.io.BufferedReader;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.Reader;
+import java.io.Writer;
+import java.util.StringJoiner;
+
+/** Stream utilities to be used when Apache Commons IO is not available. */
+public class StreamUtils {
+	private static final int DEFAULT_BUFFER_SIZE = 1024 * 4;
+
+	/*
+	 * APACHE COMMONS IO (inspired)
+	 */
+
+	/** @return the number of bytes */
+	public static Long copy(InputStream in, OutputStream out) throws IOException {
+		Long count = 0l;
+		byte[] buf = new byte[DEFAULT_BUFFER_SIZE];
+		while (true) {
+			int length = in.read(buf);
+			if (length < 0)
+				break;
+			out.write(buf, 0, length);
+			count = count + length;
+		}
+		return count;
+	}
+
+	/** @return the number of chars */
+	public static Long copy(Reader in, Writer out) throws IOException {
+		Long count = 0l;
+		char[] buf = new char[DEFAULT_BUFFER_SIZE];
+		while (true) {
+			int length = in.read(buf);
+			if (length < 0)
+				break;
+			out.write(buf, 0, length);
+			count = count + length;
+		}
+		return count;
+	}
+
+	public static byte[] toByteArray(InputStream in) throws IOException {
+		try (ByteArrayOutputStream out = new ByteArrayOutputStream()) {
+			copy(in, out);
+			return out.toByteArray();
+		}
+	}
+
+	public static void closeQuietly(InputStream in) {
+		if (in != null)
+			try {
+				in.close();
+			} catch (Exception e) {
+				//
+			}
+	}
+
+	public static void closeQuietly(OutputStream out) {
+		if (out != null)
+			try {
+				out.close();
+			} catch (Exception e) {
+				//
+			}
+	}
+
+	public static void closeQuietly(Reader in) {
+		if (in != null)
+			try {
+				in.close();
+			} catch (Exception e) {
+				//
+			}
+	}
+
+	public static void closeQuietly(Writer out) {
+		if (out != null)
+			try {
+				out.close();
+			} catch (Exception e) {
+				//
+			}
+	}
+
+	public static String toString(BufferedReader reader) throws IOException {
+		StringJoiner sn = new StringJoiner("\n");
+		String line = null;
+		while ((line = reader.readLine()) != null)
+			sn.add(line);
+		return sn.toString();
+	}
+}