Add json-p3

Author: jg-rp

implementations/JavaScript_json-p3/.gitignore

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+/node_modules

implementations/JavaScript_json-p3/LINK

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+https://github.com/jg-rp/json-p3

implementations/JavaScript_json-p3/build.ninja

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+root = implementations/JavaScript_json-p3
+builddir = $root/build
+
+rule install
+  command = (cd $root && npm install) && echo > $out
+
+build $builddir/node_modules_installed: install | $root/package.json $root/package-lock.json
+
+build $root/install: phony $builddir/node_modules_installed

implementations/JavaScript_json-p3/index.js

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+#!/usr/bin/env node
+
+const {jsonpath} = require('json-p3');
+
+const selector = process.argv[2];
+
+const stdin = process.stdin,
+      stdout = process.stdout,
+      inputChunks = [];
+
+stdin.resume();
+stdin.setEncoding('utf8');
+
+stdin.on('data', function (chunk) {
+    inputChunks.push(chunk);
+});
+
+stdin.on('end', function () {
+    const input = inputChunks.join(),
+          json = JSON.parse(input);
+
+    try {
+        const result = jsonpath.query(selector, json).values();
+        if (result === undefined) {
+            console.error(result);
+            process.exit(1);
+        }
+        stdout.write(JSON.stringify(result));
+    } catch (e) {
+        console.error(e.message);
+        process.exit(1);
+    }
+});

implementations/JavaScript_json-p3/package-lock.json

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+{
+  "name": "javascript_json-p3",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "json-p3": "^1.0.0"
+  }
+}

implementations/JavaScript_json-p3/package.json

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+#!/bin/bash
+set -euo pipefail
+
+readonly script_dir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+cd "$script_dir"
+
+readonly tmp_stdout="/tmp/node_json-p3.stdout.$$"
+readonly tmp_stderr="/tmp/node_json-p3.stderr.$$"
+
+output_and_cleanup() {
+    local filter_syntax_error_in_vm="evalmachine.<anonymous>:1"
+    if ! grep "$filter_syntax_error_in_vm" < "$tmp_stdout"; then
+        cat "$tmp_stdout"
+        >&2 cat "$tmp_stderr"
+    fi
+    rm "$tmp_stdout"
+    rm "$tmp_stderr"
+}
+
+trap output_and_cleanup EXIT
+
+./index.js "$@" > "$tmp_stdout" 2> "$tmp_stderr"

implementations/JavaScript_json-p3/run.sh

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+#!/bin/bash
+set -euo pipefail
+
+readonly script_dir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+cd "$script_dir"
+
+npm i json-p3@latest