1base64(n)            Text encoding & decoding binary data            base64(n)
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NAME

8       base64 - base64-encode/decode binary data
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SYNOPSIS

11       package require Tcl  8
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13       package require base64  ?2.3.2?
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15       ::base64::encode ?-maxlen maxlen? ?-wrapchar wrapchar? string
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17       ::base64::decode string
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DESCRIPTION

22       This  package provides procedures to encode binary data into base64 and
23       back.
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25       ::base64::encode ?-maxlen maxlen? ?-wrapchar wrapchar? string
26              Base64 encodes the given binary string and returns  the  encoded
27              result.  Inserts  the character wrapchar every maxlen characters
28              of output. wrapchar defaults to newline. maxlen defaults to 60.
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30              Note well: If your string is not simple ascii you should fix the
31              string encoding before doing base64 encoding. See the examples.
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33       ::base64::decode string
34              Base64  decodes  the  given  string and returns the binary data.
35              The decoder ignores whitespace in the string.
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EXAMPLES

38       % base64::encode "Hello, world"
39       SGVsbG8sIHdvcmxk
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42       % base64::encode [string repeat xyz 20]
43       eHl6eHl6eHl6eHl6eHl6eHl6eHl6eHl6eHl6eHl6eHl6eHl6eHl6eHl6eHl6
44       eHl6eHl6eHl6
45       % base64::encode -wrapchar "" [string repeat xyz 20]
46       eHl6eHl6eHl6eHl6eHl6eHl6eHl6eHl6eHl6eHl6eHl6eHl6eHl6eHl6eHl6eHl6eHl6eHl6
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49       # NOTE: base64 encodes BINARY strings.
50       % set chemical [encoding convertto utf-8 "C\u2088H\u2081\u2080N\u2084O\u2082"]
51       % set encoded [base64::encode $chemical]
52       Q+KCiEjigoHigoBO4oKET+KCgg==
53       % set caffeine [encoding convertfrom utf-8 [base64::decode $encoded]]
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KEYWORDS

57       base64, encoding
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60       Copyright (c) 2000, Eric Melski
61       Copyright (c) 2001, Miguel Sofer
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66base64                               2.3.2                           base64(n)
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