diff options
author | Mathias <mathias@spray.cc> | 2012-10-12 14:15:12 +0200 |
---|---|---|
committer | Mathias <mathias@spray.cc> | 2012-10-12 14:15:12 +0200 |
commit | e5a7de26dfc8a4bb4410b7ee500624e30bf66650 (patch) | |
tree | 70d2133716f04df15b93350a36b8dd1aad28704c /src/main/scala/spray/json/PrettyPrinter.scala | |
parent | 5354b7b2b1af66049328eed150e036a314878559 (diff) | |
download | spray-json-e5a7de26dfc8a4bb4410b7ee500624e30bf66650.tar.gz spray-json-e5a7de26dfc8a4bb4410b7ee500624e30bf66650.tar.bz2 spray-json-e5a7de26dfc8a4bb4410b7ee500624e30bf66650.zip |
Remove obsolete /cc/ package directories
Diffstat (limited to 'src/main/scala/spray/json/PrettyPrinter.scala')
-rw-r--r-- | src/main/scala/spray/json/PrettyPrinter.scala | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/src/main/scala/spray/json/PrettyPrinter.scala b/src/main/scala/spray/json/PrettyPrinter.scala new file mode 100644 index 0000000..0daaf71 --- /dev/null +++ b/src/main/scala/spray/json/PrettyPrinter.scala @@ -0,0 +1,68 @@ +/* + * 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 +import annotation.tailrec + +/** + * A JsonPrinter that produces a nicely readable JSON source. + */ +trait PrettyPrinter extends JsonPrinter { + val Indent = 2 + + def print(x: JsValue, sb: StringBuilder) { + print(x, sb, 0) + } + + private def print(x: JsValue, sb: StringBuilder, indent: Int) { + x match { + case JsObject(x) => printObject(x, sb, indent) + case JsArray(x) => printArray(x, sb, indent) + case _ => printLeaf(x, sb) + } + } + + private def printObject(members: Map[String, JsValue], sb: StringBuilder, indent: Int) { + sb.append("{\n") + printSeq(members, sb.append(",\n")) { m => + printIndent(sb, indent + Indent) + printString(m._1, sb) + sb.append(": ") + print(m._2, sb, indent + Indent) + } + sb.append('\n') + printIndent(sb, indent) + sb.append("}") + } + + private def printArray(elements: List[JsValue], sb: StringBuilder, indent: Int) { + sb.append('[') + printSeq(elements, sb.append(", "))(print(_, sb, indent)) + sb.append(']') + } + + @tailrec + private def printIndent(sb: StringBuilder, indent: Int) { + if (indent > 0) { + sb.append(' ') + printIndent(sb, indent - 1) + } + } +} + +object PrettyPrinter extends PrettyPrinter
\ No newline at end of file |