B4X

MIME Header Q and B Encoding and Decoding

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Demonstrates how to Q and B encode/decode. B4X

Dim success As Boolean = False

Dim sb As ChilkatStringBuilder
sb.Initialize

sb.Append("This is a test")

Log(sb.GetEncoded("B", "utf-8"))
'  output is:
'  =?utf-8?B?VGhpcyBpcyBhIHRlc3Q=?=

Log(sb.GetEncoded("Q", "iso-8859-1"))
'  output is:
'  =?utf-8?Q?This_is_a_test?=

Dim sb2 As ChilkatStringBuilder
sb2.Initialize

sb2.Append("=?utf-8?B?VGhpcyBpcyBhIHRlc3Q=?=")
sb2.Decode("B", "utf-8")
Log(sb2.GetAsString)

'  output is:
'  This is a test

sb2.Clear
sb2.Append("=?utf-8?Q?This_is_a_test?=")
sb2.Decode("Q", "utf-8")
Log(sb2.GetAsString)

'  output is:
'  This is a test

'  "B" or "Q" will decode both B and Q.
sb2.Clear
sb2.Append("=?utf-8?Q?This_is_a_test?= 123 =?utf-8?B?VGhpcyBpcyBhIHRlc3Q=?=")
sb2.Decode("Q", "utf-8")
Log(sb2.GetAsString)

'  output is:
'  This is a test 123 This is a test