mirror of https://github.com/node-red/node-red.git
103 lines
2.9 KiB
JavaScript
103 lines
2.9 KiB
JavaScript
/**
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* Copyright JS Foundation and other contributors, http://js.foundation
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*
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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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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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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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**/
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var fs = require('fs');
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var fspath = require('path');
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var when = require('when');
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var runtime;
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var exampleRoots = {};
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var exampleFlows = null;
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function getFlowsFromPath(path) {
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return when.promise(function(resolve,reject) {
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var result = {};
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fs.readdir(path,function(err,files) {
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var promises = [];
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var validFiles = [];
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files.forEach(function(file) {
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var fullPath = fspath.join(path,file);
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var stats = fs.lstatSync(fullPath);
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if (stats.isDirectory()) {
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validFiles.push(file);
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promises.push(getFlowsFromPath(fullPath));
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} else if (/\.json$/.test(file)){
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validFiles.push(file);
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promises.push(when.resolve(file.split(".")[0]))
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}
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})
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var i=0;
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when.all(promises).then(function(results) {
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results.forEach(function(r) {
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if (typeof r === 'string') {
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result.f = result.f||[];
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result.f.push(r);
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} else {
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result.d = result.d||{};
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result.d[validFiles[i]] = r;
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}
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i++;
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})
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resolve(result);
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})
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});
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})
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}
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function addNodeExamplesDir(module,path) {
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exampleRoots[module] = path;
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return getFlowsFromPath(path).then(function(result) {
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exampleFlows = exampleFlows||{d:{}};
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exampleFlows.d[module] = result;
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});
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}
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function removeNodeExamplesDir(module) {
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delete exampleRoots[module];
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if (exampleFlows && exampleFlows.d) {
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delete exampleFlows.d[module];
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}
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if (exampleFlows && Object.keys(exampleFlows.d).length === 0) {
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exampleFlows = null;
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}
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}
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function init() {
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exampleRoots = {};
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exampleFlows = null;
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}
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function getExampleFlows() {
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return exampleFlows;
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}
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function getExampleFlowPath(module,path) {
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if (exampleRoots[module]) {
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return fspath.join(exampleRoots[module],path)+".json";
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}
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return null;
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}
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module.exports = {
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init: init,
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addExamplesDir: addNodeExamplesDir,
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removeExamplesDir: removeNodeExamplesDir,
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getExampleFlows: getExampleFlows,
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getExampleFlowPath: getExampleFlowPath
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}
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