Base62

Base62EncodePipe(ostream)

Return a new write-only I/O stream, which converts any bytes written to it into base62-encoded ASCII bytes written to ostream. Calling close on the Base62EncodePipe stream is necessary to complete the encoding (but does not close ostream).

Base62 uses the lexicographic alphabet 0-9A-Za-z (62 alphanumeric characters). Note that value 0 maps to '0', not 'A' as in Base64.

Examples

julia> io = IOBuffer();

julia> iob62_encode = Base62EncodePipe(io);

julia> write(iob62_encode, "Hello!")
6

julia> close(iob62_encode);

julia> str = String(take!(io))
"0MbPS3UBt"

julia> String(base62decode(str))
"Hello!"

base62encode(writefunc, args...; context=nothing)
base62encode(args...; context=nothing)

Given a write-like function writefunc, which takes an I/O stream as its first argument, base62encode(writefunc, args...) calls writefunc to write args... to a base62-encoded string, and returns the string. base62encode(args...) is equivalent to base62encode(write, args...): it converts its arguments into bytes using the standard write functions and returns the base62-encoded string.

The optional keyword argument context can be set to a :key=>value pair or an IO or IOContext object whose attributes are used for the I/O stream passed to writefunc or write.

Base62 uses the lexicographic alphabet 0-9A-Za-z (62 alphanumeric characters). Note that value 0 maps to '0', not 'A' as in Base64.

See also base62decode.

Examples

julia> base62encode("Hello!")
"0MbPS3UBt"

julia> base62encode(UInt8[0x01, 0x02, 0x03])
"00HBL"

julia> base62encode(io -> print(io, "Hello!"))
"0MbPS3UBt"

Base62DecodePipe(istream)

Return a new read-only I/O stream, which decodes base62-encoded data read from istream.

Base62 uses the lexicographic alphabet 0-9A-Za-z (62 alphanumeric characters). Note that value 0 maps to '0', not 'A' as in Base64.

Examples

julia> io = IOBuffer("0MbPS3UBt");

julia> iob62_decode = Base62DecodePipe(io);

julia> String(read(iob62_decode))
"Hello!"

base62decode(string)

Decode the base62-encoded string and return a Vector{UInt8} of the decoded bytes.

Base62 uses the lexicographic alphabet 0-9A-Za-z (62 alphanumeric characters). Note that value 0 maps to '0', not 'A' as in Base64.

See also base62encode.

Examples

julia> b = base62decode("0MbPS3UBt")
6-element Vector{UInt8}:
 0x48
 0x65
 0x6c
 0x6c
 0x6f
 0x21

julia> String(b)
"Hello!"