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JsonPath.scala
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JsonPath.scala
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/*
* Copyright (c) 2021 Typelevel
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package fabric
import fabric.define.DefType
import fabric.rw.RW
/**
* Path is a convenience wrapper to represent paths for lookups or changes in
* Json
*/
case class JsonPath(entries: List[JsonPathEntry]) extends AnyVal {
/**
* Convenience DSL to build paths
*/
def \(entry: JsonPathEntry): JsonPath = new JsonPath(entries ::: List(entry))
def \\(that: JsonPath): JsonPath = new JsonPath(entries ::: that.entries)
def isEmpty: Boolean = entries.isEmpty
def nonEmpty: Boolean = entries.nonEmpty
/**
* Retrieves the head path element
*/
def apply(): JsonPathEntry = entries.head
/**
* Returns a new Path with the tail of this path
*/
def next(): JsonPath = new JsonPath(entries.tail)
override def toString: String =
if (entries.isEmpty) {
"<empty>"
} else {
entries.mkString("JsonPath(", " \\ ", ")")
}
}
object JsonPath {
implicit val rw: RW[JsonPath] = RW.from[JsonPath](
r = path =>
obj(
"entries" -> path.entries.map { entry =>
JsonPathEntry.rw.read(entry)
}
),
w = json => JsonPath(json("entries").asVector.toList.map(JsonPathEntry.rw.write)),
d = DefType.Obj(
"entries" -> DefType.Arr(JsonPathEntry.rw.definition)
)
)
lazy val empty: JsonPath = new JsonPath(Nil)
def apply(entries: JsonPathEntry*): JsonPath = new JsonPath(entries.toList)
/**
* Simple splitting functionality to separate a string into a path by
* separation character.
*
* The separation character defaults to '.'
*/
def parse(path: String, sep: Char = '.'): JsonPath = new JsonPath(
path.split(sep).map(_.trim).filter(_ != "").map(JsonPathEntry.Named.apply).toList
)
}