Command.ps1
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function Get-CommandsPattern() { (Get-Command * | ForEach-Object { $CommandUnsafe = $_ | Select-Object -ExpandProperty 'Name' $Command = [Regex]::Escape($CommandUnsafe) # check if it has a file extensions if ($CommandUnsafe -match "(?<cmd>[^.\s]+)\.(?<ext>[^.\s]+)$") { $CommandWithoutExtension = [Regex]::Escape($matches['cmd']) return $Command, $CommandWithoutExtension } else { return $Command } }) -Join '|' } $global:AliasTipCommandsPattern = Get-CommandsPattern # THANKS TO csc027 for the original code https://github.com/csc027 # Taken from: https://github.com/dahlbyk/posh-git/blob/ad8278e90ad8180c18e336676e490d921615e506/src/GitTabExpansion.ps1#L73-L87 # # The regular expression here is roughly follows this pattern: # # <begin anchor><whitespace>*<command>(<whitespace><parameter>)*<whitespace>+<$args><whitespace>*<end anchor> # # The delimiters inside the parameter list and between some of the elements are non-newline whitespace characters ([^\S\r\n]). # In those instances, newlines are only allowed if they preceded by a non-newline whitespace character. # # Begin anchor (^|[;`n]) # Whitespace (\s*) # Any Command (?<cmd>) # Parameters (?<params>(([^\S\r\n]|[^\S\r\n]``\r?\n)+\S+)*) # $args Anchor (([^\S\r\n]|[^\S\r\n]``\r?\n)+\`$args) # Whitespace (\s|``\r?\n)* # End Anchor ($|[|;`n]) $ProxyFunctionRegex = "(^|[;`n])(\s*)(?<cmd>($AliasTipCommandsPattern))(?<params>(([^\S\r\n]|[^\S\r\n]``\r?\n)+\S+)*)(([^\S\r\n]|[^\S\r\n]``\r?\n)+\`$args)(\s|``\r?\n)*($|[|;`n])" $ProxyFunctionRegexNoArgs = "(^|[;`n])(\s*)(?<cmd>($AliasTipCommandsPattern))(?<params>(([^\S\r\n]|[^\S\r\n]``\r?\n)+\S+)*)(\s|``\r?\n)*($|[|;`n])" function Format-CleanCommand() { param( [Parameter(Mandatory, ValueFromPipeline = $true)][string]${Command} ) return ($Command -replace '`\r?\n', ' ' -replace '\s+', ' ').Trim() } # Returns a regex to match with function Get-CommandMatcher() { param( [Parameter(Mandatory, ValueFromPipeline = $true)][string]${Command}, [Parameter()][switch]${Simple} ) if ($Simple) { $CleanCommand = $Command | Format-CleanCommand return "(" + ([Regex]::Escape($CleanCommand) -split " " -join "|") + ")" } # The parse is a bit naive... if ($Command -match $ProxyFunctionRegexNoArgs) { # Clean up the command by removing extra delimiting whitespace and backtick preceding newlines $CommandString = ("$($matches['cmd'].TrimStart())") | Format-CleanCommand $ReqParams = $($matches['params']) -split " " # $ReqParamLength = $ReqParams.Count $ReqParamRegex = "(" + ($ReqParams.ForEach({ "$([Regex]::Escape($_.Trim()))(\s|``\r?\n)*" }) -join '|') + ")*" # Enable sensitive case (?-i) # Begin anchor (^|[;`n]) # Whitespace (\s*) # Any Command (?<cmd>$CommandString) # Whitespace (\s|``\r?\n)* # Req Parameters (?<params>$ReqParamRegex) # Req Param Length {$ReqParamLength,} # Whitespace (\s|``\r?\n)* # End Anchor ($|[|;`n]) #$Regex = "(^|[;`n])(\s*)(?<cmd>$CommandString)(?<params>$ReqParamRegex{$ReqParamLength,})(\s|``\r?\n)*($|[|;`n])" $Regex = "(?-i)(^|[;`n])(\s*)(?<cmd>$CommandString)(\s|``\r?\n)*(?<params>$ReqParamRegex)(\s|``\r?\n)*($|[|;`n])" return $Regex } return "" } |