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Diffstat (limited to 'src/main/scala/spray/json/CompactPrinter.scala')
-rw-r--r-- | src/main/scala/spray/json/CompactPrinter.scala | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/src/main/scala/spray/json/CompactPrinter.scala b/src/main/scala/spray/json/CompactPrinter.scala new file mode 100644 index 0000000..b7d2856 --- /dev/null +++ b/src/main/scala/spray/json/CompactPrinter.scala @@ -0,0 +1,51 @@ +/* + * Copyright (C) 2009-2011 Mathias Doenitz + * + * 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. + */ + +package spray.json + +import java.lang.StringBuilder + +/** + * A JsonPrinter that produces compact JSON source without any superfluous whitespace. + */ +trait CompactPrinter extends JsonPrinter { + + def print(x: JsValue, sb: StringBuilder) { + x match { + case JsObject(x) => printObject(x, sb) + case JsArray(x) => printArray(x, sb) + case _ => printLeaf(x, sb) + } + } + + private def printObject(members: Map[String, JsValue], sb: StringBuilder) { + sb.append('{') + printSeq(members, sb.append(',')) { m => + printString(m._1, sb) + sb.append(':') + print(m._2, sb) + } + sb.append('}') + } + + private def printArray(elements: List[JsValue], sb: StringBuilder) { + sb.append('[') + printSeq(elements, sb.append(','))(print(_, sb)) + sb.append(']') + } +} + +object CompactPrinter extends CompactPrinter
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