I have a string variable in PowerShell which contains the value:
NFP|8dc3b47a-48eb-4696-abe2-48729beb63c8
I am attempting to get the beginning portion of that string into it's own variable by identifying the index of the "|" character and using a substring function to extract the first portion of the string, in this case "NFP". I am not sure how to escape the "|" so I can use it properly. It doesn't seem to recognize it at all. My latest attempt is as follows:
$PolicyManual = $Item["PolicyManual"]
write-host $PolicyManual #Displays NFP|8dc3b47a-48eb-4696-abe2-48729beb63c8
if ($PolicyManual.Contains([regex]::escape("|"))) {
$PolcyManual = $PolicyManual.Substring(0, $PolicyManual.IndexOf([regex]::escape("|")))
}
I'm sure this is simple, but I can't figure out how to make it work. Can anyone offer assistance to a PowerShell novice?
Thanks.
The problem is that .contains method doesn't know about regex and you are never entering the if condition because of this. When you do [regex]::escape("|"), the method is looking for a literal \|.
Try this instead:
$PolicyManual = "NFP|8dc3b47a-48eb-4696-abe2-48729beb63c8"
if ($PolicyManual.Contains('|')) {
$element0, $element1 = $PolicyManual.Split('|')
$element0 #=> NFP
$element1 #=> 8dc3b47a-48eb-4696-abe2-48729beb63c8
}
Related
if (($signmail.IndexOf('#')) -ne $null)
{
$signname = $signmail.Remove($signmail.IndexOf('#'))
}
Else{
$signname = $signmail
}
Hi, basicaly, I try to see if the user enter his mail address completely, or just the first part. I try here to ask If the value after a # in the mail address is not empty, to erase it and put it in the new variable. If not, the variable give directly his name to the other variable. But it not work. I always receive the StartIndex can't be below 0 error.
Anyone think of a way to make this code work for that part ?
Thanks
From the String.IndexOf() documentation:
Reports the zero-based index of the first occurrence of a specified Unicode character or string within this instance. The method returns -1 if the character or string is not found in this instance.
So you'll want to test whether the return value is 0 or greater:
if ($signmail.IndexOf('#') -ge 0) {
$signname = $signmail.Remove($signmail.IndexOf('#'))
}
else {
$signname = $signmail
}
I have this string: "C:\Procesos\rrhh\CorteDocumentos\Cortados\10001662-1_20060301_29_1_20190301.pdf" and im trying to get this part : "20190301". The problem is the lenght is not always the same. It would be:
"9001662-1_20060301_4_1_20190301".
I've tried this: item.ToString.Substring(66,8), but it doesn't work sometimes.
What can I do?.
This is a code example of what I said in my comment.
Sub Main()
Dim strFileName As String = ""
Dim di As New DirectoryInfo("C:\Users\Maniac\Desktop\test")
Dim aryFi As FileInfo() = di.GetFiles("*.pdf")
Dim fi As FileInfo
For Each fi In aryFi
Dim arrname() As String
arrname = Split(Path.GetFileNameWithoutExtension(fi.Name), "_")
strFileName = arrname(arrname.Count - 1)
Console.WriteLine(strFileName)
Next
End Sub
You could achieve this using a simple regular expressions, which has the added benefit of including pattern validation.
If you need to get exactly eight numbers from the end of file name (and after an underscore), you can use this pattern:
_(\d{8})\.pdf
And then this VB.NET line:
Regex.Match(fileName, "_(\d{8})\.pdf").Groups(1).Value
It's important to mention that Regex is by default case sensitive, so to prevent from being in a situations where "pdf" is matched and "PDF" is not, the patter can be adjusted like this:
(?i)_(\d{8})\.pdf
You can than use it directly in any expression window:
PS: You should also ensure that System.Text.RegularExpressions reference is in the Imports:
You can achieve it by this way as well :)
Path.GetFileNameWithoutExtension(Str1).Split("_"c).Last
Path.GetFileNameWithoutExtension
Returns the file name of the specified path string without the extension.
so with your String it will return to you - 10001662-1_20060301_29_1_20190301
then Split above String i.e. 10001662-1_20060301_29_1_20190301 based on _ and will return an array of string.
Last
It will return you the last element of an array returned by Split..
Regards..!!
AKsh
I'm hoping this is an easy question, and that I'm just not seeing the forest due to all the trees.
I have a string in flutter than came from a REST API that looks like this:
"What\u0027s this?"
The \u is causing a problem.
I can't do a string.replaceAll("\", "\") on it as the single slash means it's looking for a character after it, which is not what I need.
I tried doing a string.replaceAll(String.fromCharCode(0x92), "") to remove it - That didn't work.
I then tried using a regex to remove it like string.replaceAll("/(?:\)/", "") and the same single slash remains.
So, the question is how to remove that single slash, so I can add in a double slash, or replace it with a double slash?
Cheers
Jase
I found the issue. I was looking for hex 92 (0x92) and it should have been decimal 92.
I ended up solving the issue like this...
String removeUnicodeApostrophes(String strInput) {
// First remove the single slash.
String strModified = strInput.replaceAll(String.fromCharCode(92), "");
// Now, we can replace the rest of the unicode with a proper apostrophe.
return strModified.replaceAll("u0027", "\'");
}
When the string is read, I assume what's happening is that it's being interpreted as literal rather than as what it should be (code points) i.e. each character of \0027 is a separate character. You may actually be able to fix this depending on how you access the API - see the dart convert library. If you use utf8.decode on the raw data you may be able to avoid this entire problem.
However, if that's not an option there's an easy enough solution for you.
What's happening when you're writing out your regex or replace is that you're not escaping the backslash, so it's essentially becoming nothing. If you use a double slash, that solve the problem as it escapes the escape character. "\\" => "\".
The other option is to use a raw string like r"\" which ignores the escape character.
Paste this into https://dartpad.dartlang.org:
String withapostraphe = "What\u0027s this?";
String withapostraphe1 = withapostraphe.replaceAll('\u0027', '');
String withapostraphe2 = withapostraphe.replaceAll(String.fromCharCode(0x27), '');
print("Original encoded properly: $withapostraphe");
print("Replaced with nothing: $withapostraphe1");
print("Using char code for ': $withapostraphe2");
String unicodeNotDecoded = "What\\u0027s this?";
String unicodeWithApostraphe = unicodeNotDecoded.replaceAll('\\u0027', '\'');
String unicodeNoApostraphe = unicodeNotDecoded.replaceAll('\\u0027', '');
String unicodeRaw = unicodeNotDecoded.replaceAll(r"\u0027", "'");
print("Data as read with escaped unicode: $unicodeNotDecoded");
print("Data replaced with apostraphe: $unicodeWithApostraphe");
print("Data replaced with nothing: $unicodeNoApostraphe");
print("Data replaced using raw string: $unicodeRaw");
To see the result:
Original encoded properly: What's this?
Replaced with nothing: Whats this?
Using char code for ': Whats this?
Data as read with escaped unicode: What\u0027s this?
Data replaced with apostraphe: What's this?
Data replaced with nothing: Whats this?
Data replaced using raw string: What's this?
I've got a really simple yet infuriating PowerShell question here. I'm trying to remove a newline character from a string. I have the following code:
param(
[parameter(mandatory=$false)]$Dmn = [System.DirectoryServices.ActiveDirectory.Domain]::GetCurrentDomain()
)
function getPDC{
$Domain = $Dmn.Name.Split('.')[0]
$PDC = (nltest /dcname:$Domain).Replace("PDC for Domain ","").Replace($Domain, "").Replace(" is \\","").Replace("The command completed successfully","").Replace("`n","")
$PDC + "hodor"
}
Which, if it would work how I understand it to, should return
PDCVALUEhodor
But instead it returns:
PDCVALUE
hodor
What is the dumb mistake I'm making here?
I tried casting $PDC as a string like so:
[String]$PDC = [String](nltest /dcname:$Domain).Replace("PDC for Domain ","").Replace($Domain, "").Replace(" is \\","").Replace("The command completed successfully","").Replace(" ", "")
And the line breaks disappeared (weird!), giving me
PDCVALUE hodor
which is closer to what I want, but I can't seem to remove that space. I tried calling Replace(" ", "") and Trim() on the string, both of which didn't work.
Instead of .Replace() try .TrimEnd()
$PDC.TrimEnd("`r?`n") + "hodor"
OK, apparently replacing the line
$PDC+"hodor"
with
($PDC+"hodor").Replace(" ", "")
worked. I had to use the Replace function on the entire string ($PDC + "hodor"), not just $PDC for some reason. Also, the Trim function didn't seem to do anything.
for a user creation scrip in powershell i'm using textbox object to fill the information of the new user (family name, first name)
I return a value like that:
$TextlabelUsername.text = $Textbox1.text.ToString().Substring(0,5)
Which apply on a button click.
But using that methode if one of my string value is less then 5 caracters the script return an error that the string is not enough long.
Is there a way to select 5 or less caracters or an other method to process ?
Try this:
$str = $Textbox1.text.ToString()
$TextlabelUsername.text = $str.Substring(0, [math]::Min(5, $str.Length))
There is nothing wrong with Ansgar Wiecher's method. Here is an alternative though:
$TextLabelUserName.Text = $Textbox1.Text.ToString() -replace '(.{0,5}).*', '$1'