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77 lines
2.5 KiB
Nim
77 lines
2.5 KiB
Nim
#
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#
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# Nim's Runtime Library
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# (c) Copyright 2012 Andreas Rumpf
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#
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# See the file "copying.txt", included in this
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# distribution, for details about the copyright.
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#
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## This module implements helper procs for parsing Cookies.
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import strtabs, times
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proc parseCookies*(s: string): StringTableRef =
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## parses cookies into a string table.
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##
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## The proc is meant to parse the Cookie header set by a client, not the
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## "Set-Cookie" header set by servers.
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##
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## Example:
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##
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## .. code-block::Nim
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## doAssert parseCookies("a=1; foo=bar") == {"a": 1, "foo": "bar"}.newStringTable
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result = newStringTable(modeCaseInsensitive)
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var i = 0
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while true:
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while i < s.len and (s[i] == ' ' or s[i] == '\t'): inc(i)
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var keystart = i
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while i < s.len and s[i] != '=': inc(i)
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var keyend = i-1
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if i >= s.len: break
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inc(i) # skip '='
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var valstart = i
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while i < s.len and s[i] != ';': inc(i)
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result[substr(s, keystart, keyend)] = substr(s, valstart, i-1)
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if i >= s.len: break
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inc(i) # skip ';'
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proc setCookie*(key, value: string, domain = "", path = "",
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expires = "", noName = false,
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secure = false, httpOnly = false): string =
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## Creates a command in the format of
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## ``Set-Cookie: key=value; Domain=...; ...``
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result = ""
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if not noName: result.add("Set-Cookie: ")
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result.add key & "=" & value
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if domain != "": result.add("; Domain=" & domain)
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if path != "": result.add("; Path=" & path)
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if expires != "": result.add("; Expires=" & expires)
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if secure: result.add("; Secure")
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if httpOnly: result.add("; HttpOnly")
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proc setCookie*(key, value: string, expires: DateTime|Time,
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domain = "", path = "", noName = false,
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secure = false, httpOnly = false): string =
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## Creates a command in the format of
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## ``Set-Cookie: key=value; Domain=...; ...``
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return setCookie(key, value, domain, path,
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format(expires.utc, "ddd',' dd MMM yyyy HH:mm:ss 'GMT'"),
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noname, secure, httpOnly)
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when isMainModule:
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let expire = fromUnix(0) + 1.seconds
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let cookies = [
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setCookie("test", "value", expire),
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setCookie("test", "value", expire.local),
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setCookie("test", "value", expire.utc)
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]
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let expected = "Set-Cookie: test=value; Expires=Thu, 01 Jan 1970 00:00:01 GMT"
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doAssert cookies == [expected, expected, expected]
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let table = parseCookies("uid=1; kp=2")
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doAssert table["uid"] == "1"
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doAssert table["kp"] == "2"
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