Develop Reference

unable to run a batch file if I place the code inside any if conditions

I am trying to create a batch file which will be placed inside the if else statement i.e., if the condition is true it should create a batch file and run that batch file and if the condition is false the else part should create another batch file.
The below code is not working i.e., it is not creating the batch file.
function saveFilePP() {
loc_ip = document.getElementById("ip").value;
var Path = document.getElementById("path").value;
var username = "hduser1";
if (Type1 == "DIRECTORY") {
var blob = new Blob(["C:\\Users\\Nandini\\Desktop\\Plink\\plink.exe " +
username + "#" + loc_ip + " -pw 123 hadoop fs -rm -r /" + Path + ""
], {
type: "text/plain;charset=ANSI"
});
saveAs(blob, "delete.bat");
} else {
var blob = new Blob(["C:\\Users\\Nandini\\Desktop\\Plink\\plink.exe " +
username + "#" + loc_ip + " -pw 123 hadoop fs -rm /" + Path + ""
], {
type: "text/plain;charset=ANSI"
});
saveAs(blob, "delete.bat");
}
}

Use variable from callback as global variable

I made a block in which the request to the specified URL occurs.
Inside this block, I can work with the data from response, but outside this block I can not get this data because of asynchrony.
Is it possible to simulate a synchronous request in blockly or in some other way, save the received data to a global variable?
code of the created block:
Blockly.Blocks['request'] =
'<block type="request">'
+ ' <value name="URL">'
+ ' <shadow type="text">'
+ ' <field name="TEXT">text</field>'
+ ' </shadow>'
+ ' </value>'
+ ' <value name="LOG">'
+ ' </value>'
+ ' <value name="WITH_STATEMENT">'
+ ' </value>'
+ ' <mutation with_statement="false"></mutation>'
+ '</block>';
Blockly.Blocks['request'] = {
init: function() {
this.appendDummyInput('TEXT')
.appendField('request');
this.appendValueInput('URL')
.appendField('URL');
this.appendDummyInput('WITH_STATEMENT')
.appendField('with results')
.appendField(new Blockly.FieldCheckbox('FALSE', function (option) {
var delayInput = (option == true);
this.sourceBlock_.updateShape_(delayInput);
}), 'WITH_STATEMENT');
this.appendDummyInput('LOG')
.appendField('log level')
.appendField(new Blockly.FieldDropdown([
['none', ''],
['info', 'log'],
['debug', 'debug'],
['warning', 'warn'],
['error', 'error']
]), 'LOG');
this.setInputsInline(false);
this.setPreviousStatement(true, null);
this.setNextStatement(true, null);
this.setColour(230);
this.setTooltip('Request URL');
this.setHelpUrl('https://github.com/request/request');
},
mutationToDom: function() {
var container = document.createElement('mutation');
container.setAttribute('with_statement', this.getFieldValue('WITH_STATEMENT') === 'TRUE');
return container;
},
domToMutation: function(xmlElement) {
this.updateShape_(xmlElement.getAttribute('with_statement') == 'true');
},
updateShape_: function(withStatement) {
// Add or remove a statement Input.
var inputExists = this.getInput('STATEMENT');
if (withStatement) {
if (!inputExists) {
this.appendStatementInput('STATEMENT');
}
} else if (inputExists) {
this.removeInput('STATEMENT');
}
}};
Blockly.JavaScript['request'] = function(block) {
var logLevel = block.getFieldValue('LOG');
var URL = Blockly.JavaScript.valueToCode(block, 'URL', Blockly.JavaScript.ORDER_ATOMIC);
var withStatement = block.getFieldValue('WITH_STATEMENT');
var logText;
if (logLevel) {
logText = 'console.' + logLevel + '("request: " + ' + URL + ');\n'
} else {
logText = '';
}
if (withStatement === 'TRUE') {
var statement = Blockly.JavaScript.statementToCode(block, 'STATEMENT');
if (statement) {
var xmlhttp = "var xmlHttp = new XMLHttpRequest();";
var xmlopen = "xmlHttp.open('POST', " + URL + ", true);";
var xmlheaders = "xmlHttp.setRequestHeader('Content-type', 'application/json');\n" +
"xmlHttp.setRequestHeader('Authorization', 'Bearer psokmCxKjfhk7qHLeYd1');";
var xmlonload = "xmlHttp.onload = function() {\n" +
" console.log('recieved:' + this.response);\n" +
" var response = this.response;\n" +
" var brightness = 'brightness: ' + JSON.parse(this.response).payload.devices[0].brightness;\n" +
" " + statement + "\n" +
"}";
var json = JSON.stringify({
"requestId": "ff36a3cc-ec34-11e6-b1a0-64510650abcf",
"inputs": [{
"intent": "action.devices.QUERY",
"payload": {
"devices": [{
"id": "0",
"customData": {
"smartHomeProviderId": "FkldJVJCmDNSaoLkoq0txiz8Byf2Hr"
}
}]
}
}]
});
var xmlsend = "xmlHttp.send('" + json + "');";
var code = xmlhttp + '\n' + xmlopen + '\n' + xmlheaders + '\n' + xmlonload + '\n' + xmlsend;
return code;
} else {
var xmlhttp = "var xmlHttp = new XMLHttpRequest();";
var xmlopen = "xmlHttp.open('POST', " + URL + ", true);";
var xmlheaders = "xmlHttp.setRequestHeader('Content-type', 'application/json');\n" +
"xmlHttp.setRequestHeader('Authorization', 'Bearer psokmCxKjfhk7qHLeYd1');";
var xmlonload = "xmlHttp.onload = function() {\n" +
" console.log('recieved:' + this.response);\n" +
"}";
var json = JSON.stringify({
"requestId": "ff36a3cc-ec34-11e6-b1a0-64510650abcf",
"inputs": [{
"intent": "action.devices.QUERY",
"payload": {
"devices": [{
"id": "0",
"customData": {
"smartHomeProviderId": "FkldJVJCmDNSaoLkoq0txiz8Byf2Hr"
}
}]
}
}]
});
var xmlsend = "xmlHttp.send('" + json + "');";
var code = xmlhttp + '\n' + xmlopen + '\n' + xmlheaders + '\n' + xmlonload + '\n' + xmlsend;
return code;
}
} else {
var xmlhttp = "var xmlHttp = new XMLHttpRequest();";
var xmlopen = "xmlHttp.open('POST', " + URL + ", true);";
var xmlheaders = "xmlHttp.setRequestHeader('Content-type', 'application/json');\n" +
"xmlHttp.setRequestHeader('Authorization', 'Bearer psokmCxKjfhk7qHLeYd1');";
var xmlonload = "xmlHttp.onload = function() {\n" +
" console.log('recieved:' + this.response);\n" +
"}";
var json = JSON.stringify({
"requestId": "ff36a3cc-ec34-11e6-b1a0-64510650abcf",
"inputs": [{
"intent": "action.devices.QUERY",
"payload": {
"devices": [{
"id": "0",
"customData": {
"smartHomeProviderId": "FkldJVJCmDNSaoLkoq0txiz8Byf2Hr"
}
}]
}
}]
});
var xmlsend = "xmlHttp.send('" + json + "');";
var code = xmlhttp + '\n' + xmlopen + '\n' + xmlheaders + '\n' + xmlonload + '\n' + xmlsend;
return code;
}};

We actually use Promises extensively in our Blockly environment. My suggestion would be to Promisify this and then use a generator function. For example, we use the co library to wrap our generated code, then use yield statements for asynchronous values to make them behave synchronously. For example:
For a block setup similar to this --
The generated code would be something like this (simplified) --
co(function* () {
var getUsername;
// getFieldValue makes an asynchronous call to our database
getUsername = (yield getFieldValue("username", "my user record Id", "users"));
Promise.all(inputPromises)
let inputPromises = [];
inputPromises.push('User name is');
inputPromises.push(getUsername);
yield new Promise(function(resolve, reject) {
Promise.all(inputPromises).then(function(inputResults) {
let [TITLE, MESSAGE] = inputResults;
let activity = "toastMessage";
let LEVEL = "success";
try {
var params = {message: MESSAGE, title: TITLE, level: LEVEL};
interface.notification(params);
return resolve();
} catch(err) {
return reject(err);
}
}).catch(reject);
});
return true;
}
As you may have noticed, though, this isn't always as easy as just sticking a "yield" before the block. Depending on your setup, you may have to get more creative using Promise.all to get values in your block, etc. (We actually wound up editing a bunch of the Blockly core blocks to append 'yield' in front of inputs which had a "promise" type set amongst their output types in order to make this work, but based on your setup, this may be overkill.)
Obviously, you would need to make sure this was either transpiled or run in an environment which supports ES6.
Of course, once you enter an asynchronous setup, there's not really any going back -- co functions themselves return a Promise, so you will need to deal with that appropriately. But in general, we've found this to be a pretty robust solution, and I'm happy to help you figure it out in more detail.

You can have blocks that execute asynchronously without Promises, async functions, or callbacks by using the JS Interpreter (docs, GitHub), conveniently written by the same guy that created Blockly. JS Interpreter is a JavaScript-in-JavaScript implementation. This does mean there needs to be a lot of code to connect the functions/commands of the main JS VM to the interpreter's embedded implementation.
Blockly has a few demonstrations of doing this (src). In particular, you'll want to investigate async-execution.html and the wait block implementation. You can find the wait block running live here.
Conveniently, the interpreter's doc's section on External API happens to use XMLHttpRequest as its example implementation. This should should be a good starting point for your request block's implementation.

How to hide the console when using app.system(...) in ExtendScript ? (Photoshop)

Everything is in the question. I just want to execute another process from a Photoshop Script (coded in ExtendScript) without the console appearing, or at least finding a way to put back in the front the Photoshop application.
Thx for your help !
function Main()
{
if (app.documents.length == 0)
{
return;
}
var tmpFolder = $.getenv("TEMP");
var exeFile = "convertor.exe";
/** Save a temporary copy of the current document. **/
var tmpPng = new File(tmpFolder + "\\" + app.activeDocument.name + ".png");
var saveOpts = new PNGSaveOptions;
app.activeDocument.saveAs(tmpPng, saveOpts, true, Extension.LOWERCASE);
/** Convert the file to a MP4 video. **/
var tmpMp4 = new File(tmpFolder + "\\" + app.activeDocument.name + ".mp4");
var conversionLog = new File(logFolder + "\\" + "conversion.log");
var command = exeFile + " -inputPng=\"" + tmpPng.fsName + "\" -outputMp4=\"\" -logPath=\"" + conversionLog.fsName + "\"";
app.system(command);
tmpPng.remove();
}
Main();

String becomes undefined

bot.addListener('message', function (from, channel, message) {
IRClog.write("[" + (new Date()).toJSON() + "] [" + channel + "] <" + from + ">" + message + "\n");
// ============= PLAYER COMMANDS ============= //
if (logMessages){
util.log("[" + channel + "] <" + from + ">" + message);
}
console.log(message)// the message is logged
bot.whois(from,function(WHOIS){
if(typeof WHOIS.account == 'undefined'){
var isAuthed = false;
} else {
var isAuthed = true;
}
if (message.indexOf("!") === 0){//now the message is undefined
...
As described in the code, the var message is a string, and then, I don't know why, it becomes an undefined variable. Why is that happening? I didn't assign it to another value.

Depending on the execution context the function that the bot.whois executes may not have message defined in scope. You can use a closure to ensure the scope by passing in the message.
(function (msg) {
console.log(msg)// the message is logged
bot.whois(from, function(WHOIS){
var isAuthed = typeof WHOIS.account !== 'undefined';
if (msg.indexOf("!") === 0) {
...
}
})(message);

Your code is incomplete, obviously, and the actual bug probably resides somewhere below your cutoff point as you've put in your question:
bot.addListener('message', function (from, channel, message) {
IRClog.write("[" + (new Date()).toJSON() + "] [" + channel + "] <" + from + ">" + message + "\n");
// ============= PLAYER COMMANDS ============= //
if (logMessages){
util.log("[" + channel + "] <" + from + ">" + message);
}
console.log(message)// the message is logged
bot.whois(from,function(WHOIS){
if(typeof WHOIS.account == 'undefined'){
var isAuthed = false;
} else {
var isAuthed = true;
}
if (message.indexOf("!") === 0){//now the message is undefined
...
}); // end of the whois block, which is asynchronous
/* somewhere down here, message probably gets set to undefined
like this:
message = undefined; // this would run before bot.whois(from, cb); finishes
*/
}); // end of addListener
You either need to make sure that you're not messing with the message below your whois call, or you need to create a copy that you don't mess with, or you need to follow #Romoku's advice and wrap your whois call in a properly formatted closure (like the following) and pass message in to a strictly local scope:
bot.addListener('message', function (from, channel, message) {
IRClog.write("[" + (new Date()).toJSON() + "] [" + channel + "] <" + from + ">" + message + "\n");
// ============= PLAYER COMMANDS ============= //
if (logMessages){
util.log("[" + channel + "] <" + from + ">" + message);
}
console.log(message)// the message is logged
(function (msg) {
bot.whois(from,function(WHOIS){
if(typeof WHOIS.account == 'undefined'){
var isAuthed = false;
} else {
var isAuthed = true;
}
if (msg.indexOf("!") === 0){//now the message is undefined
...
}); // end of the whois block, which is asynchronous
})(message);
/* now you can do whatever you want to the message variable and bot.whois will
be able to operate on its independent, unmolested copy
*/
}); // end of addListener
Please note how in my example, and #Romoku's, message has been explicitly renamed (to msg and m, respectively), to make it clear that you're working with in a different scope with a different copy of the data.

Using casperjs and phantomjs to scrape multiple pages

I'm trying to scrape a number of pages that have a standard format. I've been able to use Phantomjs to successfully scrape a single page, but when I try to iterate over multiple ones, the asynchronous processing makes things hang up. What's the proper way to tell Casper/Phantom to wait?
var page = require('webpage').create();
var fs = require('fs');
page.onConsoleMessage = function(msg) {
phantom.outputEncoding = "utf-8";
console.log(msg);
};
// this overwrites the previous output file
f = fs.open("lat_long.txt", "w");
f.write("--");
f.close();
// this is the unique identifier for the locations. For now, I just have three datapoints
var EPAID = ["KYD980501076","ME8170022018", "MEN000103584"];
/// this code will be used to loop through the different locations. For now, set to look at only one.
for (q= 0; q < 1; q++) {
var processing = false;
//we construct the target url
var url = "http://iaspub.epa.gov/enviro/efsystemquery.cerclis?fac_search=site_epa_id&fac_value=" + EPAID[0] + "&fac_search_type=Beginning+With&postal_code=&location_address=&add_search_type=Beginning+With&city_name=&county_name=&state_code=&program_search=1&report=2&page_no=1&output_sql_switch=TRUE&database_type=CERCLIS" ;
page.open(url);
page.onLoadFinished = function(status) {
if ( status === "success" ) {
page.includeJs("http://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js", function() {
var str = page.evaluate(function() {
$value = [];
$Object = $(".result tr");
for (i =0 ; i < 10; i++) {
$value.push($Object.find('td').html(),$Object.find('td').next().next().html() );
$Object = $Object.next();
}
$string = "{ EPAID: "+ $value[0] + ", " +
"Name: "+ $value[1] + ", " +
"City: "+ $value[4] + ", " +
"State: "+ $value[6] + ", " +
"ZipCode: "+ $value[8] + ", " +
"Latitude: "+ $value[14] + ", " +
"Longitude: "+ $value[16] + " }" ;
return $string;
});
f = fs.open("lat_long.txt", "a");
f.write(str);
f.close();
processing = true;
console.log("writing to file");
phantom.exit();
});
}
// right here it should delay until the previous page is completed
// while (!processing) {
// setTimeout(function(){ console.log("waiting....");},1000);
// }
};
}
console.log("finished all pages");

If you switched to using casperJS, it is as simple as changing your page.open() into page.thenOpen(). (This CasperJS - How to open up all links in an array of links question looks very similar to yours?)
If you wanted to stick with PhantomJS you need to start the next page load in the onSuccess callback of the previous load. This is tedious, and needs care to avoid large memory usage. (I did it once or twice, but now simply use CasperJS.)
An alternative approach is to create the page object inside the loop. However that is not quite answering your question, as then they will run in parallel. But you could use setTimeout to stagger each once to avoid a burst of activity if you have hundreds of URLs!

Here is the code that ultimately works (using the timeout approach since I wasn't able to get the success callback to work better).
With casperjs installed, I named this file "process.js" and was able to run it from the command line as "casperjs process.js"
var page = require('webpage').create();
var fs = require('fs');
page.onConsoleMessage = function(msg) {
phantom.outputEncoding = "utf-8";
console.log(msg);
};
// this overwrites the previous output f
// this is the unique identifier for the locations.
var EPAID = ["NED981713837",... , "FLD049985302", "NJD986643153"];
f = fs.open("lat_long.txt", "w");
f.write("-<>-");
f.close();
var count = 0;
var target = 1400;
var written = [];
function yourFunction(){
if (count < target) {
process(count);
count++;
setTimeout(yourFunction, 5000);
} else {
console.log("exiting");
phantom.exit();
return;
}
}
function process(counter){
var processing = false;
console.log("Beginning record #" + counter);
//we construct the target url
var url = "http://iaspub.epa.gov/enviro/efsystemquery.cerclis?fac_search=site_epa_id&fac_value=" + EPAID[counter] + "&fac_search_type=Beginning+With&postal_code=&location_address=&add_search_type=Beginning+With&city_name=&county_name=&state_code=&program_search=1&report=2&page_no=1&output_sql_switch=TRUE&database_type=CERCLIS" ;
page.open(url);
page.onLoadFinished = function(status) {
if ( status === "success" ) {
page.includeJs("http://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js", function() {
var str = page.evaluate(function() {
$value = [];
$Object = $(".result tr");
for (i =0 ; i < 10; i++) {
$value.push($Object.find('td').html(),$Object.find('td').next().next().html() );
$Object = $Object.next();
}
$string = "{ \"EPAID\": \""+ $value[0] + "\", " +
"\"Name\": \""+ $value[1] + "\", " +
"\"City\": \""+ $value[4] + "\", " +
"\"State\": \""+ $value[6] + "\", " +
"\"ZipCode\": \""+ $value[8] + "\", " +
"\"Latitude\": "+ $value[14] + ", " +
"\"Longitude\": "+ $value[16] + " }," ;
return $string;
});
if (written[counter] === undefined) {
f = fs.open("lat_long.txt", "a");
f.write(str);
f.close();
written[counter] = true;
console.log("Writing to file #"+ counter);
}
});
}
};
}
console.log("Start...");
yourFunction();