I need to send a custom email message to every User of a list ( List < User > ) I have. (I'm using C# .NET)
What I would need to do is to replace all the expressions (that start with "[?&=" have "variableName" in the middle and then ends with "]") with the actual User property value.
So for example if I have a text like this:
"Hello, [?&=Name]. A gift will be sent to [?&=Address], [?&=Zipcode], [?&=Country].
If [?&=Email] is not your email address, please contact us."
I would like to get this for the user:
"Hello, Mary. A gift will be sent to Boulevard Spain 918, 11300, Uruguay.
If marytech#gmail.com is not your email address, please contact us."
Is there a practical and clean way to do this with Regex?
This is a good place to apply regex.
The regular expression you want looks like this /\[\?&=(\w*)\]/ example
You will need to do a replace on the input string using a method that allows you to use a custom function for replacement values. Then inside that function use the first capture value as the Key so to say and pull the correct corresponding value.
Since you did not specify what language you are using I will be nice and give you an example in C# and JS that I made for my own projects just recently.
Pseudo-Code
Loop through matches
Key is in first capture group
Check if replacements dict/obj/db/... has value for the Key
if Yes, return Value
else return ""
C#
email = Regex.Replace(email, #"\[\?&=(\w*)\]",
match => //match contains a Key & Replacements dict has value for that key
match?.Groups[1].Value != null
&& replacements.ContainsKey(match.Groups[1].Value)
? replacements[match.Groups[1].Value]
: "");
JS
var content = text.replace(/\[\?&=(\w*)\]/g,
function (match, p1) {
return replacements[p1] || "";
});
Related
I have a textfield controller which matches a RegExp whenever the user type it in. For example the typed in string may be "#jack and #jill went up the hill". The following code will match the taghandles and list them.
Firstly the TextField:
TextField(
controller: myController,
)
Which listens for each input into the text field and passes it to a function:
myController.addListener(_matchTextToRegexp);
The function then matches taghandles ie. '#jack' '#jill'
_matchTextToRegexp() {
String value = myController.text;
RegExp regExpTaghandle = RegExp(r"\B#+([\w]+)\b");
Iterable matches = regExpTaghandle.allMatches(value);
matches.forEach((match) {
tagHandle = value.substring(match.start, match.end);
_callToAction(tagHandle);
}
}
The issue is that i want to call a function _callToAction() and pass it the taghandle (for example it could pass the substring/taghandle to a typeahead suggestion dropdown menu as the user types it in - similar functionality to a tweet mention). This code works for one taghandle, but if the users continues inputting text (or adds multiple taghandles) into the form it will keep matching the first taghandle even though the user has typed passed the first taghandle.
So how do you distinguish between multiple taghandles as they are dynamically typed in?
I have a JSON object something like below from which i wanted to strip out sensitive information like password, mobile no, etc. using Regular Expressions,
Example JSON
{
"username":"abc",
"password":"xyz123",
"Security":{
"SecurityQuestion":"what is your first pet name",
"SecurityAnswer": "snoopy"
}
}
From the above JSON object, I wanted to strip out sensitive information like "password" and "SecurityAnswer". I tried various regular expression patterns but it was removing only either any one of the item.
I need help or guidance on how to construct a regular expression, in which i can include any names in the expression and then those fields will be stripped out of the JSON.
Expected Output:
{
"username":"abc",
"Security":{
"SecurityQuestion":"what is your first pet name"
}
}
Note: If a password is the last property, then the expression should be able to remove the comma (,) also from the previous property.
I tried the expression from Regex remove json property with various combinations but none were working as per my requirement.
If you want to get values from JSON, you don't need to use regex and make a very complex regular expression.
var data = {
"username":"abc",
"password":"xyz123",
"Security":{
"SecurityQuestion":"what is your first pet name",
"SecurityAnswer": "snoopy"
}
}
That is your object, now if you want to retrieve the data simply treat it like a json.
function retrieveData( Obj ) {
return {
username: Obj.username,
Security:{
SecurityQuestion: Obj.Security.SecurityQuestion
}
}
}
var extractedData = retrieveData(data);
I have integrated oAuth2 (Facebook, LinkedIn, etc) with my XPages app to allow for authentication to easily add comments (response docs). When a user authenticates, it has to redirect to the facebook/linkedin page, then return to complete the document creation. I use the state variable to do this, and pass it in the querystring of the url. When the page reloads and sees the state variable, it calls a "beforePageLoad" event and creates the response document if the user authenticated and has the correct state document.
My problem is when there is already a state parameter in the querystring. I want to replace the value, not add it to the end. I use a solution here from stackOverflow by ellemayo called updateQueryStringParameter. When I call it from my beforePageLoads it runs, but never replaces the parameter, it only appends it to the end. I end up with ...&state=E5A&state=E5F
I have a feeling that it is in the line,
return uri.replace(re, '$1' + key + "=" + value + '$2');
I can write the code using #ReplaceSubstring(), etc, but want to know if there are problems running regex in XPages SSJS. I read on Lotus.com that
A Regular Expression can be specified as Server-side, which uses the
Java (java.util.regex) API or Client-side, which uses the browser
JavaScript Regular Expression Engine. Client-side and Server-side
Regular Expression syntax is similar, but there are differences that a
user must be aware of.
Should I avoid regex in XPages SSJS ? I have it working extensively in client and in some field validations on the XPage itself.
Here is the call to the function:
if(#Contains( qString,"state=")){
qString=updateQueryStringParameter(qString, "state", linkDoc.getNoteID() );
}else{
qString="?"+qString+"&state=" + linkDoc.getNoteID()
}
the function:
function updateQueryStringParameter(uri, key, value) {
var re = new RegExp("([?&])" + key + "=.*?(&|$)", "i");
var separator = uri.indexOf('?') !== -1 ? "&" : "?";
if (uri.match(re)) {
// I also tried --> if (re.test(uri)) {
return uri.replace(re, '$1' + key + "=" + value + '$2');
}
else {
return uri + separator + key + "=" + value;
}
}
It was not an XPage or Regex problem. I was using the querystring provided by Domino the excludes the "?" as part of the querystring. when I send "?" + qString to the function, it works. Regex needed to know where to start looking, thus it never found the start of the query string.
Let's start by saying I have a very large project, part of this project is to grab a user recovery action status, and a user email, and send it through a service layer back to the front end of the application. The catch is, the email needs to be altered on the back end so it doesn't get sent plain text. What I mean by this is, when the value gets populated on the back end, I need to have some code to modify it so it will have a format like this: j*****e#domain.com. This absolutely needs to be done in the method that I'm working on(which honestly isn't very big). Here is the method I have that will grab the status from another method within the same class, as well as grabbing the email of the user:
public CredentialRecoveryResponse RecoveryResponse(CredentialRecoveryRequest request)
{
CredentialRecoveryResponse response = new CredentialRecoveryResponse();
response.Status = RecoverCredentials(request);
if (response.Status == UserRecoveryActionStatus.Success)
{
User usr = UserRepository.GetByID(request.UserID);
response.Email = usr.EmailAddress;
}
return response;
}
Somehow, inside this method, I need to take that usr.EmailAddress and modify it do "block" or change the values to "*" for all characters except the first and last characters before the "#domain.com" portion. Is there a quick and easy way to do this within the method that way the whole email address isn't getting sent back through the wire?
Here's one take:
private static string ObfuscateEmail(string email)
{
return Regex.Replace(email, "^(?<name>[^#]+)", m => {
string match = m.Groups["name"].Value;
return match[0] + new String('*', match.Length - 1);
});
}
What is this doing?
The method uses Regex.Replace and passes a lambda function to do the actual replacement
The regex pattern simply says match everything to the left of the # sign and create a named group called 'name'.
The lambda function then takes the first character of the match and appends to it a series of asterisks, using an overload of the String method (char, int) which repeats that char N number of times. It's N-1 here since the first char is unobfuscated.
I'm using selenium RC and I would like, for example, to get all the links elements with attribute href that match:
http://[^/]*\d+com
I would like to use:
sel.get_attribute( '//a[regx:match(#href, "http://[^/]*\d+.com")]/#name' )
which would return a list of the name attribute of all the links that match the regex.
(or something like it)
thanks
The answer above is probably the right way to find ALL of the links that match a regex, but I thought it'd also be helpful to answer the other part of the question, how to use regex in Xpath locators. You need to use the regex matches() function, like this:
xpath=//div[matches(#id,'che.*boxes')]
(this, of course, would click the div with 'id=checkboxes', or 'id=cheANYTHINGHEREboxes')
Be aware, though, that the matches function is not supported by all native browser implementations of Xpath (most conspicuously, using this in FF3 will throw an error: invalid xpath[2]).
If you have trouble with your particular browser (as I did with FF3), try using Selenium's allowNativeXpath("false") to switch over to the JavaScript Xpath interpreter. It'll be slower, but it does seem to work with more Xpath functions, including 'matches' and 'ends-with'. :)
You can use the Selenium command getAllLinks to get an array of the ids of links on the page, which you could then loop through and check the href using the getAttribute, which takes the locator followed by an # and the attribute name. For example in Java this might be:
String[] allLinks = session().getAllLinks();
List<String> matchingLinks = new ArrayList<String>();
for (String linkId : allLinks) {
String linkHref = selenium.getAttribute("id=" + linkId + "#href");
if (linkHref.matches("http://[^/]*\\d+.com")) {
matchingLinks.add(link);
}
}
A possible solution is to use sel.get_eval() and write a JS script that returns a list of the links. something like the following answer:
selenium: Is it possible to use the regexp in selenium locators
Here's some alternate methods as well for Selenium RC. These aren't pure Selenium solutions, they allow interaction with your programming language data structures and Selenium.
You can also get get HTML page source, then regular expression the source to return a match set of links. Use regex grouping to separate out URLs, link text/ID, etc. and you can then pass them back to selenium to click on or navigate to.
Another method is get HTML page source or innerHTML (via DOM locators) of a parent/root element then convert the HTML to XML as DOM object in your programming language. You can then traverse the DOM with desired XPath (with regular expression or not), and obtain a nodeset of only the links of interest. From their parse out the link text/ID or URL and you can pass back to selenium to click on or navigate to.
Upon request, I'm providing examples below. It's mixed languages since the post didn't appear to be language specific anyways. I'm just using what I had available to hack together for examples. They aren't fully tested or tested at all, but I've worked with bits of the code before in other projects, so these are proof of concept code examples of how you'd implement the solutions I just mentioned.
//Example of element attribute processing by page source and regex (in PHP)
$pgSrc = $sel->getPageSource();
//simple hyperlink extraction via regex below, replace with better regex pattern as desired
preg_match_all("/<a.+href=\"(.+)\"/",$pgSrc,$matches,PREG_PATTERN_ORDER);
//$matches is a 2D array, $matches[0] is array of whole string matched, $matches[1] is array of what's in parenthesis
//you either get an array of all matched link URL values in parenthesis capture group or an empty array
$links = count($matches) >= 2 ? $matches[1] : array();
//now do as you wish, iterating over all link URLs
//NOTE: these are URLs only, not actual hyperlink elements
//Example of XML DOM parsing with Selenium RC (in Java)
String locator = "id=someElement";
String htmlSrcSubset = sel.getEval("this.browserbot.findElement(\""+locator+"\").innerHTML");
//using JSoup XML parser library for Java, see jsoup.org
Document doc = Jsoup.parse(htmlSrcSubset);
/* once you have this document object, can then manipulate & traverse
it as an XML/HTML node tree. I'm not going to go into details on this
as you'd need to know XML DOM traversal and XPath (not just for finding locators).
But this tutorial URL will give you some ideas:
http://jsoup.org/cookbook/extracting-data/dom-navigation
the example there seems to indicate first getting the element/node defined
by content tag within the "document" or source, then from there get all
hyperlink elements/nodes and then traverse that as a list/array, doing
whatever you want with an object oriented approach for each element in
the array. Each element is an XML node with properties. If you study it,
you'd find this approach gives you the power/access that WebDriver/Selenium 2
now gives you with WebElements but the example here is what you can do in
Selenium RC to get similar WebElement kind of capability
*/
Selenium's By.Id and By.CssSelector methods do not support Regex and By.XPath only does where XPath 2.0 is enabled. If you want to use Regex, you can do something like this:
void MyCallingMethod(IWebDriver driver)
{
//Search by ID:
string attrName = "id";
//Regex = 'a number that is 1-10 digits long'
string attrRegex= "[0-9]{1,10}";
SearchByAttribute(driver, attrName, attrRegex);
}
IEnumerable<IWebElement> SearchByAttribute(IWebDriver driver, string attrName, string attrRegex)
{
List<IWebElement> elements = new List<IWebElement>();
//Allows spaces around equal sign. Ex: id = 55
string searchString = attrName +"\\s*=\\s*\"" + attrRegex +"\"";
//Search page source
MatchCollection matches = Regex.Matches(driver.PageSource, searchString, RegexOptions.IgnoreCase);
//iterate over matches
foreach (Match match in matches)
{
//Get exact attribute value
Match innerMatch = Regex.Match(match.Value, attrRegex);
cssSelector = "[" + attrName + "=" + attrRegex + "]";
//Find element by exact attribute value
elements.Add(driver.FindElement(By.CssSelector(cssSelector)));
}
return elements;
}
Note: this code is untested. Also, you can optimize this method by figuring out a way to eliminate the second search.