I want to search number with specific format from string and increment the last number by 1 using powershell. The string is taken from large txt file.
Example:
$str = "Android version 4.4.2, Alfa = 1.2.0400, Beta = 2.0.0200, Prod 3.4.0104"
I want to increase beta version by 1 (2.0.0200 ==> 2.0.0201),
After run powershell command:
$str = "Android version 4.4.2, Alfa = 1.2.0400, Beta = 2.0.0201, Prod 3.4.0104"
This is a bit clunky, but seems to work:
$str = "Android version 4.4.2, Alfa = 1.2.0400, Beta = 2.0.0201, Prod 3.4.0104"
if($str -match "(?<=Beta = \d+\.\d+\.)(?<bv>\d+)")
{
$str -replace "(?<=Beta = \d+\.\d+\.)(\d+)", ("{0:0000}" -f (([int]::Parse($matches.bv)+1)))
}
There might be a way to get it to work in one line with just the -Replace, but it eludes me for the moment.
-replace allows you to reference matches ($1, ${name}, etc), which would be much neater without obfuscation - I just couldn't make it work :-(
There is a version type in powershell you can take advantage of like so. The following will output a the beta version string incremented.
$originalString = "Android version 4.4.2, Alfa = 1.2.0400, Beta = 2.0.0200,
Prod 3.4.0104"
$parsedString = $originalString.Split(' ')
$betaVersionStr = $parsedString[8].TrimEnd(',')
$betaVersion = [version]$betaVersionStr
# you can always condense those lines above if you want
# $betaVersion = [version]$originalString.Split(' ')[8].TrimEnd(',')
"{0}.{1}.{2:d4}" -f $betaVersion.Major, $betaVersion.Minor, ($betaVersion.Build + 1)
Well, the answer will depend a lot on how representative your example is of the rest of your actual data, but for the example you gave:
$str = "Android version 4.4.2, Alfa = 1.2.0400, Beta = 2.0.0200, Prod 3.4.0104"
$str -match ('^(.+), (Beta = )(.+),(.+)$')
$ver = $matches[3].split('.')
$ver[2] = '{0:0000}' -f ([int]$ver[2] + 1)
$newVerStr = $ver -join '.'
$newStr = '{0}, {1}{2},{3}' -f $matches[1], $matches[2], $newVerStr, $matches[4]
$newStr
The code snippet using the method Replace of System.Text.RegularExpressions.Regex:
$str = "Android version 4.4.2, Alfa = 1.2.0400, Beta = 2.0.0200, Prod 3.4.0104"
[regex]::Replace($str, '(?<Head>.+\.)(?<Beta>\d+)(?<Tail>,[^,]+)$',
{ param( [System.Text.RegularExpressions.Match]$m )
$bv = 1 + $m.Groups['Beta'].Value
'{0}{1:0000}{2}' -f $m.Groups['Head'].Value,$bv,$m.Groups['Tail'].Value
}
)
The output:
Android version 4.4.2, Alfa = 1.2.0400, Beta = 2.0.0201, Prod 3.4.0104
