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Save some alloc on base64 using encodeSize (#16465)

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Juan Carlos 2020-12-27 08:02:10 -03:00 • committed by GitHub
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lib/pure/base64.nim
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@ -193,6 +193,7 @@ proc encodeMime*(s: string, lineLen = 75, newLine = "\r\n"): string =
## * `decode proc<#decode,string>`_ for decoding a string ## * `decode proc<#decode,string>`_ for decoding a string
runnableExamples: runnableExamples:
assert encodeMime("Hello World", 4, "\n") == "SGVs\nbG8g\nV29y\nbGQ=" assert encodeMime("Hello World", 4, "\n") == "SGVs\nbG8g\nV29y\nbGQ="
result = newStringOfCap(encodeSize(s.len))
for i, c in encode(s): for i, c in encode(s):
if i != 0 and (i mod lineLen == 0): if i != 0 and (i mod lineLen == 0):
result.add(newLine) result.add(newLine)