RegEx/Mustache/Tag.regex.ps1
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param( [string] $Tag, [ValidateSet('Comment','Escaped','SectionStart','SectionEnd', 'Partial', 'Unescaped')] [string[]] $TagType ) if (-not $tag) { $tag = @" (?:.|\s){0,}?(?=\z| # Now we match everything until (?(IsEscaped)(\}{3})|(\}{2})) # 3 Brackets (if escaped) 2 (if not) ) "@ } $mustBeType = $true $tagTypeRegex = [Ordered]@{ "Escaped" = "\{", "# One more curly bracket marks it as escaped." "SectionStart" = "\#", "# Starting with a number sign makes it a section start." "SectionEnd" = "\/", "# Starting with a slash makes it a section end." "Comment" = "\!", "# Starting with an exclamation point makes it a comment." "Partial" = "\>", "# Starting with greater than makes it a partial" "Unescaped" = "\&", "# Unescaped variables start with ampersands." } if (-not $TagType) { $TagType = $TagTypeRegex.Keys $mustBeType = $false } $ValidTagTypes = @(foreach ($tt in $tagTypeRegex.GetEnumerator()) { @( $tt.Value[1] "(?><Is$($tt.Key)>$($tt.Value[0]))" ) -join [Environment]::NewLine }) -join ([Environment]::NewLine + '|' + [Environment]::NewLine) $ValidTagTypes = "(?> $ValidTagTypes )$(if (-not $mustBeType) { '?' })" " \{{2} # Two curly brackets start a tag $ValidTagTypes \s{0,} (?<Variable> $tag ) # Once more, to be sure we're not at the end of the document. (?(IsEscaped)(\}{3})|(\}{2})) # 3 Brackets (if escaped) 2 (if not) " |