RegEx/REST/Variable.regex.txt
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# Matches URL segments and query strings containing variables.
# Variables can be enclosed in brackets or curly braces, or preceeded by a $ or : (?> # A variable can be in a URL segment or subdomain (?<Start>[/\.]) # Match the <Start>ing slash|dot ... (?<IsOptional>\?)? # ... an optional ? (to indicate optional) ... (?: \{(?<Variable>\w+)\}| # ... A <Variable> name in {} OR \[(?<Variable>\w+)\]| # A <Variable> name in [] OR \<(?<Variable>\w+)\>| # A <Variable> name in <> OR `\$(?<Variable>\w+) | # A `$ followed by a <Variable> OR \:(?<Variable>\w+) # A : followed by a <Variable> ) | (?<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 ] | # 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) ... (?: \{(?<Variable>\w+)\}| # ... A <Variable> name in {} OR \[(?<Variable>\w+)\]| # A <Variable> name in [] OR \<(?<Variable>\w+)\>| # A <Variable> name in <> OR `\$(?<Variable>\w+) | # A $ followed by a <Variable> OR \:(?<Variable>\w+) # A : followed by a <Variable> ) ) |