How can i find a pattern in the AssemblyFile for a c# app using Powershell?-CodePudding

The powershell script is as follows:

   $verNumber ="123"

# Replace last digit of AssemblyVersion

    $assemblyInfo = $assemblyInfo -replace "^\[assembly: AssemblyVersion\(`"([0-9] )\. 
  ([0-9] )\.([0-9] )\.[0-9] `"\)]", 
   ('[assembly: AssemblyVersion("$1.$2.$3.'   $verNumber   '")]')

    
   # Replace last digit of AssemblyFileVersion

   $assemblyInfo = $assemblyInfo -replace 
    "^\[assembly: AssemblyFileVersion\(`"([0-9] )\.([0-9] )\.([0-9] )\.[0-9] `"\)]", 
    ('[assembly: AssemblyFileVersion("$1.$2.$3.'   $verNumber   '")]')

This is what is in my file.

// [assembly: AssemblyVersion("1.1.0.0")]
[assembly: AssemblyVersion("1.1.0.123")]
[assembly: AssemblyFileVersion("1.1.0.123")]

line 2 and 3 get updated but I am trying to update 1 , How can i get that pattern in the regex ?

CodePudding user response：

This should be a simplified version of the regex you wanted to accomplish. See this regex101 link for details.

$verNumber = 123
$assemblyinfo = @'
// [assembly: AssemblyVersion("1.1.0.0")]
[assembly: AssemblyVersion("1.1.0.123")]
[assembly: AssemblyFileVersion("1.1.0.123")]
'@

$assemblyinfo -replace '(?<=(^//\s*\[assembly: AssemblyVersion\("(\d \.){3}))\d ', $verNumber

CodePudding user response：

You could do all 3 replacements using 2 capture groups in a single replacement and an optional part in the pattern for the leading slashes and another optional part for the File

(?m)^((?:// )?\[assembly: Assembly(?:File)?Version\("(?:\d \.){3})[0-9] ("\)])$

The pattern matches:

(?m) Inline modifier for multiline
^ Start of string
( Capture group 1
- (?:// )? Optionally match //
\[assembly: Assembly(?:File)?Version Match [assembly: AssemblyVersion or [assembly: AssemblyFileVersion
\(" Match ("
(?:\d \.){3} Match 3 repetitions of 1 digits 0-9 and a dot
) Close group 1
[0-9] Match 1 digits that should be replaced
("\)]) Capture group 2, match )]
$ End of string

Regex demo

For example, reading a file.txt that contains the example strings:

$verNumber ="123"
$assemblyInfo = Get-Content -Raw file.txt
$assemblyInfo = $assemblyInfo -replace "(?m)^((?:// )?\[assembly: Assembly(?:File)?Version\(`"(?:\d \.){3})[0-9] (`"\)])$", "`${1}$verNumber`${2}"
Write-Output $assemblyInfo

Output

// [assembly: AssemblyVersion("1.1.0.123")]
[assembly: AssemblyVersion("1.1.0.123")]
[assembly: AssemblyFileVersion("1.1.0.123")]