mirror of
https://github.com/node-red/node-red.git
synced 2023-10-10 13:36:53 +02:00
284 lines
8.9 KiB
JavaScript
284 lines
8.9 KiB
JavaScript
/**
|
|
* Copyright 2013, 2014 IBM Corp.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
**/
|
|
|
|
var fs = require('fs');
|
|
var when = require('when');
|
|
var nodeFn = require('when/node/function');
|
|
var keys = require('when/keys');
|
|
var util = require('util');
|
|
var fspath = require("path");
|
|
var mkdirp = require("mkdirp");
|
|
|
|
var promiseDir = nodeFn.lift(mkdirp);
|
|
|
|
var settings;
|
|
var flowsFile;
|
|
var flowsFullPath;
|
|
var flowsPrev;
|
|
var credentialsFile;
|
|
var oldCredentialsFile;
|
|
var userDir;
|
|
var libDir;
|
|
var libFlowsDir;
|
|
|
|
function listFiles(dir) {
|
|
var dirs = {};
|
|
var files = [];
|
|
var dirCount = 0;
|
|
return nodeFn.call(fs.readdir, dir).then(function (contents) {
|
|
contents.sort().forEach(function(fn) {
|
|
var stats = fs.lstatSync(dir+"/"+fn);
|
|
if (stats.isDirectory()) {
|
|
dirCount += 1;
|
|
dirs[fn] = listFiles(dir+"/"+fn)
|
|
} else {
|
|
files.push(fn.split(".")[0]);
|
|
}
|
|
})
|
|
var result = {};
|
|
if (dirCount > 0) { result.d = keys.all(dirs); }
|
|
if (files.length > 0) { result.f = when.resolve(files); }
|
|
return keys.all(result);
|
|
})
|
|
}
|
|
|
|
function getFileMeta(root,path) {
|
|
var fn = fspath.join(root,path);
|
|
var fd = fs.openSync(fn,"r");
|
|
var size = fs.fstatSync(fd).size;
|
|
var meta = {};
|
|
var read = 0;
|
|
var length = 10;
|
|
var remaining = "";
|
|
var buffer = Buffer(length);
|
|
while(read < size) {
|
|
read+=fs.readSync(fd,buffer,0,length);
|
|
var data = remaining+buffer.toString();
|
|
var parts = data.split("\n");
|
|
remaining = parts.splice(-1);
|
|
for (var i=0;i<parts.length;i+=1) {
|
|
var match = /^\/\/ (\w+): (.*)/.exec(parts[i]);
|
|
if (match) {
|
|
meta[match[1]] = match[2];
|
|
} else {
|
|
read = size;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
fs.closeSync(fd);
|
|
return meta;
|
|
}
|
|
|
|
function getFileBody(root,path) {
|
|
var body = "";
|
|
var fn = fspath.join(root,path);
|
|
var fd = fs.openSync(fn,"r");
|
|
var size = fs.fstatSync(fd).size;
|
|
var scanning = true;
|
|
var read = 0;
|
|
var length = 50;
|
|
var remaining = "";
|
|
var buffer = Buffer(length);
|
|
while(read < size) {
|
|
var thisRead = fs.readSync(fd,buffer,0,length);
|
|
read += thisRead;
|
|
if (scanning) {
|
|
var data = remaining+buffer.slice(0,thisRead).toString();
|
|
var parts = data.split("\n");
|
|
remaining = parts.splice(-1)[0];
|
|
for (var i=0;i<parts.length;i+=1) {
|
|
if (! /^\/\/ \w+: /.test(parts[i])) {
|
|
scanning = false;
|
|
body += parts[i]+"\n";
|
|
}
|
|
}
|
|
if (! /^\/\/ \w+: /.test(remaining)) {
|
|
scanning = false;
|
|
}
|
|
if (!scanning) {
|
|
body += remaining;
|
|
}
|
|
} else {
|
|
body += buffer.slice(0,thisRead).toString();
|
|
}
|
|
}
|
|
fs.closeSync(fd);
|
|
return body;
|
|
}
|
|
|
|
var localfilesystem = {
|
|
init: function(_settings) {
|
|
settings = _settings;
|
|
userDir = settings.userDir || process.env.NODE_RED_HOME;
|
|
|
|
if (settings.flowFile) {
|
|
flowsFile = settings.flowFile;
|
|
flowsFullPath = flowsFile;
|
|
} else {
|
|
flowsFile = 'flows_'+require('os').hostname()+'.json';
|
|
flowsFullPath = fspath.join(userDir,flowsFile);
|
|
}
|
|
var fsext = fspath.extname(flowsFile);
|
|
credentialsFile = fspath.join(userDir,fspath.basename(flowsFile,fsext)+"_cred"+fsext);
|
|
oldCredentialsFile = fspath.join(userDir,"credentials.json");
|
|
flowsPrev = fspath.join(userDir,"flows.backup");
|
|
|
|
libDir = fspath.join(userDir,"lib");
|
|
libFlowsDir = fspath.join(libDir,"flows");
|
|
|
|
return promiseDir(libFlowsDir);
|
|
},
|
|
|
|
getFlows: function() {
|
|
var defer = when.defer();
|
|
fs.exists(flowsFullPath, function(exists) {
|
|
if (exists) {
|
|
util.log("[red] Loading flows : "+flowsFile);
|
|
defer.resolve(nodeFn.call(fs.readFile,flowsFullPath,'utf8').then(function(data) {
|
|
return JSON.parse(data);
|
|
}));
|
|
} else {
|
|
util.log("[red] Flows file not found : "+flowsFile );
|
|
defer.resolve([]);
|
|
}
|
|
});
|
|
return defer.promise;
|
|
},
|
|
|
|
saveFlows: function(flows) {
|
|
if (fs.existsSync(flowsFullPath)) {
|
|
fs.renameSync(flowsFullPath,flowsPrev);
|
|
}
|
|
|
|
var flowData;
|
|
|
|
if (settings.flowFilePretty) {
|
|
flowData = JSON.stringify(flows,null,4);
|
|
} else {
|
|
flowData = JSON.stringify(flows);
|
|
}
|
|
|
|
return nodeFn.call(fs.writeFile, flowsFullPath, flowData);
|
|
},
|
|
|
|
getCredentials: function() {
|
|
var defer = when.defer();
|
|
fs.exists(credentialsFile, function(exists) {
|
|
if (exists) {
|
|
defer.resolve(nodeFn.call(fs.readFile, credentialsFile, 'utf8').then(function(data) {
|
|
return JSON.parse(data)
|
|
}));
|
|
} else {
|
|
fs.exists(oldCredentialsFile, function(exists) {
|
|
if (exists) {
|
|
defer.resolve(nodeFn.call(fs.readFile, oldCredentialsFile, 'utf8').then(function(data) {
|
|
return JSON.parse(data)
|
|
}));
|
|
} else {
|
|
defer.resolve({});
|
|
}
|
|
});
|
|
}
|
|
});
|
|
return defer.promise;
|
|
},
|
|
|
|
saveCredentials: function(credentials) {
|
|
var credentialData;
|
|
if (settings.flowFilePretty) {
|
|
credentialData = JSON.stringify(credentials,null,4);
|
|
} else {
|
|
credentialData = JSON.stringify(credentials);
|
|
}
|
|
|
|
return nodeFn.call(fs.writeFile, credentialsFile, credentialData)
|
|
},
|
|
|
|
getAllFlows: function() {
|
|
return listFiles(libFlowsDir);
|
|
},
|
|
|
|
getFlow: function(fn) {
|
|
var defer = when.defer();
|
|
var file = fspath.join(libFlowsDir,fn+".json");
|
|
fs.exists(file, function(exists) {
|
|
if (exists) {
|
|
defer.resolve(nodeFn.call(fs.readFile,file,'utf8'));
|
|
} else {
|
|
defer.reject();
|
|
}
|
|
});
|
|
return defer.promise;
|
|
},
|
|
|
|
saveFlow: function(fn,data) {
|
|
var file = fspath.join(libFlowsDir,fn+".json");
|
|
return promiseDir(fspath.dirname(file)).then(function () {
|
|
return nodeFn.call(fs.writeFile, file, data);
|
|
});
|
|
},
|
|
|
|
getLibraryEntry: function(type,path) {
|
|
var root = fspath.join(libDir,type);
|
|
var rootPath = fspath.join(libDir,type,path);
|
|
return promiseDir(root).then(function () {
|
|
return nodeFn.call(fs.lstat, rootPath).then(function(stats) {
|
|
if (stats.isFile()) {
|
|
return getFileBody(root,path);
|
|
}
|
|
if (path.substr(-1) == '/') {
|
|
path = path.substr(0,path.length-1);
|
|
}
|
|
return nodeFn.call(fs.readdir, rootPath).then(function(fns) {
|
|
var dirs = [];
|
|
var files = [];
|
|
fns.sort().filter(function(fn) {
|
|
var fullPath = fspath.join(path,fn);
|
|
var absoluteFullPath = fspath.join(root,fullPath);
|
|
if (fn[0] != ".") {
|
|
var stats = fs.lstatSync(absoluteFullPath);
|
|
if (stats.isDirectory()) {
|
|
dirs.push(fn);
|
|
} else {
|
|
var meta = getFileMeta(root,fullPath);
|
|
meta.fn = fn;
|
|
files.push(meta);
|
|
}
|
|
}
|
|
});
|
|
return dirs.concat(files);
|
|
});
|
|
});
|
|
});
|
|
},
|
|
|
|
saveLibraryEntry: function(type,path,meta,body) {
|
|
var fn = fspath.join(libDir, type, path);
|
|
var headers = "";
|
|
for (var i in meta) {
|
|
if (meta.hasOwnProperty(i)) {
|
|
headers += "// "+i+": "+meta[i]+"\n";
|
|
}
|
|
}
|
|
return promiseDir(fspath.dirname(fn)).then(function () {
|
|
nodeFn.call(fs.writeFile, fn, headers+body);
|
|
});
|
|
}
|
|
};
|
|
|
|
module.exports = localfilesystem;
|