RegEx/REST/Variable.regex.ps1
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<# .Synopsis Matches a REST variable .Description Matches variables within a RESTful URL. Variables can take several forms: #> param( # The variable formats. [ValidateSet('Braces', 'Brackets','Tags','TickDollar','ColonStart')] [string[]] $VariableFormat = @('Braces', 'Brackets', 'Tags', 'TickDollar', 'ColonStart'), [switch] $NotInQuery ) process { $varForms = foreach ($vf in $VariableFormat) { if ($vf -eq 'Braces') {@' \{(?<Variable>\w+)\}| # ... A <Variable> name in {} OR '@ } if ($vf -eq 'Brackets') {@' \[(?<Variable>\w+)\]| # A <Variable> name in [] OR '@ } if ($vf -eq 'Tags') {@' \<(?<Variable>\w+)\>| # A <Variable> name in <> OR '@ } if ($vf -eq 'TickDollar') { @' `\$(?<Variable>\w+) | # A `$ followed by a <Variable> OR '@ } if ($vf -eq 'ColonStart') { @' \:(?<Variable>\w+) # A : followed by a <Variable> '@ } } @" (?> # A variable can be in a URL segment or subdomain (?<Start>[/\.]) # Match the <Start>ing slash|dot ... (?<IsOptional>\?)? # ... an optional ? (to indicate optional) ... (?:$([Environment]::NewLine + @($varForms -join [Environment]::newline)) ) | (?<IsOptional> # If it's optional it can also be [{\[](?<Start>/) # a bracket or brace, followed by a slash ) (?<Variable>\w+)[}\]] # then a <Variable> name followed by } or ] $(if (-not $NotInQuery) { @" | # OR it can be in a query parameter: (?<Start>[\?\&]) # Match The <Start>ing ? or & ... (?<Query>[\$\w\-]+) # ... the <Query> parameter name ... = # ... an equals ... (?<IsOptional>\?)? # ... an optional ? (to indicate optional) ... (?:$([Environment]::NewLine + @($varForms -join [Environment]::newline)) ) "@}) ) "@ } |