Url.Interpolate

Url.Interpolate provides a single function, interpolate, which takes a URI Template string and a Dict of variables, and expands the input string according to the rules in IETF RFC 6570, up to Level 3 (Level 4 compliance is not provided or planned).

interpolate : String -> Dict String String -> String

Example URI template interpolation:

interpolate "<http://example.com/{path}{?x,y,empty}"> <|
Dict.fromList [("path", "hello"), ("x", "1024"), ("y", "768")]


-- "<http://example.com/hello?x=1024&y=768&empty=">

Internal note: I was surprised to find that the baseline %-encode rules for URI templates are slightly different than the built-in encodeURIComponent. For instance, '!' is escaped for the template operations that use the "unrestricted set" of unescaped characters, while the built-in does not escape it. Thus, we rely on the Hex library rather than Url.percentEncode.

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Url.Interpolate

ericgj/elm-uri-template/1.0.1

Url.Interpolate

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