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Copyright 2014 James Saryerwinnie
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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# jmespath.js
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[](https://travis-ci.org/jmespath/jmespath.js)
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jmespath.js is a javascript implementation of JMESPath,
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which is a query language for JSON. It will take a JSON
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document and transform it into another JSON document
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through a JMESPath expression.
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Using jmespath.js is really easy. There's a single function
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you use, `jmespath.search`:
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```
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> var jmespath = require('jmespath');
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> jmespath.search({foo: {bar: {baz: [0, 1, 2, 3, 4]}}}, "foo.bar.baz[2]")
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2
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```
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In the example we gave the ``search`` function input data of
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`{foo: {bar: {baz: [0, 1, 2, 3, 4]}}}` as well as the JMESPath
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expression `foo.bar.baz[2]`, and the `search` function evaluated
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the expression against the input data to produce the result ``2``.
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The JMESPath language can do a lot more than select an element
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from a list. Here are a few more examples:
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```
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> jmespath.search({foo: {bar: {baz: [0, 1, 2, 3, 4]}}}, "foo.bar")
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{ baz: [ 0, 1, 2, 3, 4 ] }
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> jmespath.search({"foo": [{"first": "a", "last": "b"},
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{"first": "c", "last": "d"}]},
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"foo[*].first")
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[ 'a', 'c' ]
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> jmespath.search({"foo": [{"age": 20}, {"age": 25},
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{"age": 30}, {"age": 35},
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{"age": 40}]},
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"foo[?age > `30`]")
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[ { age: 35 }, { age: 40 } ]
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```
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## More Resources
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The example above only show a small amount of what
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a JMESPath expression can do. If you want to take a
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tour of the language, the *best* place to go is the
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[JMESPath Tutorial](http://jmespath.org/tutorial.html).
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One of the best things about JMESPath is that it is
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implemented in many different programming languages including
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python, ruby, php, lua, etc. To see a complete list of libraries,
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check out the [JMESPath libraries page](http://jmespath.org/libraries.html).
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And finally, the full JMESPath specification can be found
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on the [JMESPath site](http://jmespath.org/specification.html).
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/*! jmespath 2016-03-22 */
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!function(a){"use strict";function b(a){return null!==a?"[object Array]"===Object.prototype.toString.call(a):!1}function c(a){return null!==a?"[object Object]"===Object.prototype.toString.call(a):!1}function d(a,e){if(a===e)return!0;var f=Object.prototype.toString.call(a);if(f!==Object.prototype.toString.call(e))return!1;if(b(a)===!0){if(a.length!==e.length)return!1;for(var g=0;g<a.length;g++)if(d(a[g],e[g])===!1)return!1;return!0}if(c(a)===!0){var h={};for(var i in a)if(hasOwnProperty.call(a,i)){if(d(a[i],e[i])===!1)return!1;h[i]=!0}for(var j in e)if(hasOwnProperty.call(e,j)&&h[j]!==!0)return!1;return!0}return!1}function e(a){if(""===a||a===!1||null===a)return!0;if(b(a)&&0===a.length)return!0;if(c(a)){for(var d in a)if(a.hasOwnProperty(d))return!1;return!0}return!1}function f(a){for(var b=Object.keys(a),c=[],d=0;d<b.length;d++)c.push(a[b[d]]);return c}function g(a){return a>="a"&&"z">=a||a>="A"&&"Z">=a||"_"===a}function h(a){return a>="0"&&"9">=a||"-"===a}function i(a){return 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m(a){this.a=a,this.functionTable={abs:{b:this.c,d:[{types:[r]}]},avg:{b:this.e,d:[{types:[z]}]},ceil:{b:this.f,d:[{types:[r]}]},contains:{b:this.g,d:[{types:[t,u]},{types:[s]}]},ends_with:{b:this.h,d:[{types:[t]},{types:[t]}]},floor:{b:this.i,d:[{types:[r]}]},length:{b:this.j,d:[{types:[t,u,v]}]},map:{b:this.k,d:[{types:[x]},{types:[u]}]},max:{b:this.l,d:[{types:[z,A]}]},merge:{b:this.m,d:[{types:[v],variadic:!0}]},max_by:{b:this.n,d:[{types:[u]},{types:[x]}]},sum:{b:this.o,d:[{types:[z]}]},starts_with:{b:this.p,d:[{types:[t]},{types:[t]}]},min:{b:this.q,d:[{types:[z,A]}]},min_by:{b:this.r,d:[{types:[u]},{types:[x]}]},type:{b:this.s,d:[{types:[s]}]},keys:{b:this.t,d:[{types:[v]}]},values:{b:this.u,d:[{types:[v]}]},sort:{b:this.v,d:[{types:[A,z]}]},sort_by:{b:this.w,d:[{types:[u]},{types:[x]}]},join:{b:this.x,d:[{types:[t]},{types:[A]}]},reverse:{b:this.y,d:[{types:[t,u]}]},to_array:{b:this.z,d:[{types:[s]}]},to_string:{b:this.A,d:[{types:[s]}]},to_number:{b:this.B,d:[{types:[s]}]},not_null:{b:this.C,d:[{types:[s],variadic:!0}]}}}function n(a){var b=new k,c=b.parse(a);return c}function o(a){var b=new j;return b.tokenize(a)}function p(a,b){var c=new k,d=new m,e=new l(d);d.a=e;var f=c.parse(b);return e.search(f,a)}var q;q="function"==typeof String.prototype.trimLeft?function(a){return a.trimLeft()}:function(a){return a.match(/^\s*(.*)/)[1]};var r=0,s=1,t=2,u=3,v=4,w=5,x=6,y=7,z=8,A=9,B="EOF",C="UnquotedIdentifier",D="QuotedIdentifier",E="Rbracket",F="Rparen",G="Comma",H="Colon",I="Rbrace",J="Number",K="Current",L="Expref",M="Pipe",N="Or",O="And",P="EQ",Q="GT",R="LT",S="GTE",T="LTE",U="NE",V="Flatten",W="Star",X="Filter",Y="Dot",Z="Not",$="Lbrace",_="Lbracket",aa="Lparen",ba="Literal",ca={".":Y,"*":W,",":G,":":H,"{":$,"}":I,"]":E,"(":aa,")":F,"@":K},da={"<":!0,">":!0,"=":!0,"!":!0},ea={" ":!0," ":!0,"\n":!0};j.prototype={tokenize:function(a){var b=[];this.D=0;for(var c,d,e;this.D<a.length;)if(g(a[this.D]))c=this.D,d=this.E(a),b.push({type:C,value:d,start:c});else if(void 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{
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"name": "jmespath.js",
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"main": "jmespath.js",
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"version": "0.11.0",
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"homepage": "https://github.com/jmespath/jmespath.js",
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"authors": [
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"James Saryerwinnie <js@jamesls.com>"
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],
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"description": "JMESPath implementation in javascript",
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"moduleType": [
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"node"
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],
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"keywords": [
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"jmespath"
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],
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"license": "MIT",
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"ignore": [
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"**/.*",
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"node_modules",
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"bower_components",
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"test",
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"tests"
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]
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}
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#!/usr/bin/env node
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jmespath = require('./jmespath');
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process.stdin.setEncoding('utf-8');
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if (process.argv.length < 2) {
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console.log("Must provide a jmespath expression.");
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process.exit(1);
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}
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var inputJSON = "";
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process.stdin.on('readable', function() {
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var chunk = process.stdin.read();
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if (chunk !== null) {
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inputJSON += chunk;
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}
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});
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process.stdin.on('end', function() {
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var parsedInput = JSON.parse(inputJSON);
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console.log(JSON.stringify(jmespath.search(parsedInput, process.argv[2])));
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});
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{
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"name": "jmespath",
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"description": "JMESPath implementation in javascript",
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"version": "0.16.0",
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"author": {
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"name": "James Saryerwinnie",
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"email": "js@jamesls.com",
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"url": "http://jamesls.com/"
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},
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"homepage": "https://github.com/jmespath/jmespath.js",
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"contributors": [],
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"devDependencies": {
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"grunt": "^0.4.5",
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"grunt-contrib-jshint": "^0.11.0",
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"grunt-contrib-uglify": "^0.11.1",
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"grunt-eslint": "^17.3.1",
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"mocha": "^2.1.0"
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},
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"dependencies": {},
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"main": "jmespath.js",
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"directories": {
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"test": "test"
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},
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"engines": {
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"node": ">= 0.6.0"
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},
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"repository": {
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"type": "git",
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"url": "git://github.com/jmespath/jmespath.js"
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},
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"bugs": {
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"url": "http://github.com/jmespath/jmespath.js/issues",
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"mail": ""
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},
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"license": "Apache-2.0",
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"keywords": [
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"jmespath",
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"jsonpath",
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"json",
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"xpath"
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],
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"scripts": {
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"test": "mocha test/"
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}
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}
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