diff options
Diffstat (limited to 'lib/pure/base64.nim')
| -rw-r--r-- | lib/pure/base64.nim | 18 |
1 files changed, 5 insertions, 13 deletions
diff --git a/lib/pure/base64.nim b/lib/pure/base64.nim index 795820433..591d22cc0 100644 --- a/lib/pure/base64.nim +++ b/lib/pure/base64.nim @@ -66,15 +66,11 @@ template cbBase(a, b): untyped = [ 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', a, b] -let +const cb64 = cbBase('+', '/') cb64safe = cbBase('-', '_') const - cb64VM = cbBase('+', '/') - cb64safeVM = cbBase('-', '_') - -const invalidChar = 255 template encodeSize(size: int): int = (size * 4 div 3) + 6 @@ -134,14 +130,10 @@ template encodeInternal(s, alphabet: typed): untyped = result.setLen(outputIndex) template encodeImpl() {.dirty.} = - when nimvm: - block: - let lookupTableVM = if safe: cb64safeVM else: cb64VM - encodeInternal(s, lookupTableVM) + if safe: + encodeInternal(s, cb64safe) else: - block: - let lookupTable = if safe: unsafeAddr(cb64safe) else: unsafeAddr(cb64) - encodeInternal(s, lookupTable) + encodeInternal(s, cb64) proc encode*[T: byte|char](s: openArray[T], safe = false): string = ## Encodes `s` into base64 representation. @@ -252,7 +244,7 @@ proc decode*(s: string): string = inputLen = s.len inputEnds = 0 # strip trailing characters - while s[inputLen - 1] in {'\n', '\r', ' ', '='}: + while inputLen > 0 and s[inputLen - 1] in {'\n', '\r', ' ', '='}: dec inputLen # hot loop: read 4 characters at at time inputEnds = inputLen - 4 |