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author | Matthew Livesey <matt@mjlivesey.co.uk> | 2015-09-13 17:04:27 +0100 |
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committer | Matthew Livesey <matt@mjlivesey.co.uk> | 2015-09-13 17:04:27 +0100 |
commit | dd62833aca49ee5aa6a1dbb6b6d274d44c7b52dc (patch) | |
tree | f7309a7bba38e61cf65c1cfd4d7de46ba839592f /src/main/scala/spray | |
parent | f185c5fb1d53f5399dbbb7229d7f7ae02971be20 (diff) | |
download | spray-json-dd62833aca49ee5aa6a1dbb6b6d274d44c7b52dc.tar.gz spray-json-dd62833aca49ee5aa6a1dbb6b6d274d44c7b52dc.tar.bz2 spray-json-dd62833aca49ee5aa6a1dbb6b6d274d44c7b52dc.zip |
Added method for sorted print
This method prints in the same format
as PrettyPrinter but sorts the keys
of each object lexicographically.
The impetus for this change was this
question:
http://stackoverflow.com/questions/31418626/sort-fields-in-rendered-json
In general it is useful to be able to have more deterministic
control over the ordering of output, if diff tools
are to be used.
Diffstat (limited to 'src/main/scala/spray')
-rw-r--r-- | src/main/scala/spray/json/JsValue.scala | 1 | ||||
-rw-r--r-- | src/main/scala/spray/json/PrettyPrinter.scala | 4 | ||||
-rw-r--r-- | src/main/scala/spray/json/SortedPrinter.scala | 9 |
3 files changed, 13 insertions, 1 deletions
diff --git a/src/main/scala/spray/json/JsValue.scala b/src/main/scala/spray/json/JsValue.scala index b21672d..a269475 100644 --- a/src/main/scala/spray/json/JsValue.scala +++ b/src/main/scala/spray/json/JsValue.scala @@ -28,6 +28,7 @@ sealed abstract class JsValue { def toString(printer: (JsValue => String)) = printer(this) def compactPrint = CompactPrinter(this) def prettyPrint = PrettyPrinter(this) + def sortedPrint = SortedPrinter(this) def convertTo[T :JsonReader]: T = jsonReader[T].read(this) /** diff --git a/src/main/scala/spray/json/PrettyPrinter.scala b/src/main/scala/spray/json/PrettyPrinter.scala index 57cf35e..6af5443 100644 --- a/src/main/scala/spray/json/PrettyPrinter.scala +++ b/src/main/scala/spray/json/PrettyPrinter.scala @@ -37,9 +37,11 @@ trait PrettyPrinter extends JsonPrinter { } } + protected def organiseMembers(members: Map[String, JsValue]): Seq[(String, JsValue)] = members.toSeq + protected def printObject(members: Map[String, JsValue], sb: StringBuilder, indent: Int) { sb.append("{\n") - printSeq(members, sb.append(",\n")) { m => + printSeq(organiseMembers(members), sb.append(",\n")) { m => printIndent(sb, indent + Indent) printString(m._1, sb) sb.append(": ") diff --git a/src/main/scala/spray/json/SortedPrinter.scala b/src/main/scala/spray/json/SortedPrinter.scala new file mode 100644 index 0000000..070d36c --- /dev/null +++ b/src/main/scala/spray/json/SortedPrinter.scala @@ -0,0 +1,9 @@ +package spray.json + +trait SortedPrinter extends PrettyPrinter { + + override protected def organiseMembers(members: Map[String, JsValue]): Seq[(String, JsValue)] = + members.toSeq.sortBy(_._1) +} + +object SortedPrinter extends SortedPrinter |