diff options
Diffstat (limited to 'cadi/core/src/main/java/org/onap/ccsdk/apps/cadi/util/JsonOutputStream.java')
-rw-r--r-- | cadi/core/src/main/java/org/onap/ccsdk/apps/cadi/util/JsonOutputStream.java | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/cadi/core/src/main/java/org/onap/ccsdk/apps/cadi/util/JsonOutputStream.java b/cadi/core/src/main/java/org/onap/ccsdk/apps/cadi/util/JsonOutputStream.java new file mode 100644 index 00000000..933877d3 --- /dev/null +++ b/cadi/core/src/main/java/org/onap/ccsdk/apps/cadi/util/JsonOutputStream.java @@ -0,0 +1,89 @@ +/** + * ============LICENSE_START==================================================== + * org.onap.ccsdk + * =========================================================================== + * Copyright (c) 2023 AT&T Intellectual Property. All rights reserved. + * =========================================================================== + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * ============LICENSE_END==================================================== + * + */ + +package org.onap.ccsdk.apps.cadi.util; + +import java.io.IOException; +import java.io.OutputStream; + +public class JsonOutputStream extends OutputStream { + private static final byte[] TWO_SPACE = " ".getBytes(); + private OutputStream os; + private boolean closeable; + private int indent = 0; + private int prev,ret=0; + + public JsonOutputStream(OutputStream os) { + // Don't close these, or dire consequences. + closeable = !os.equals(System.out) && !os.equals(System.err); + this.os = os; + } + + @Override + public void write(int b) throws IOException { + if (ret=='\n') { + ret = 0; + if (prev!=',' || (b!='{' && b!='[')) { + os.write('\n'); + for (int i=0;i<indent;++i) { + os.write(TWO_SPACE); + } + } + } + switch(b) { + case '{': + case '[': + ret = '\n'; + ++indent; + break; + case '}': + case ']': + --indent; + os.write('\n'); + for (int i=0;i<indent;++i) { + os.write(TWO_SPACE); + } + break; + case ',': + ret = '\n'; + break; + + } + os.write(b); + prev = b; + } + public void resetIndent() { + indent = 1; + } + + @Override + public void flush() throws IOException { + os.flush(); + } + + @Override + public void close() throws IOException { + if (closeable) { + os.close(); + } + } + +} |