(JavaScript) Demonstrate the Global.AutoQBDecode property
The Global.AutoQBDecode property can be set to true to cause Q/B encoded string arguments passed to any Chilkat method to be automatically decoded before being used.
Note: This example requires Chilkat v10.0.0 or later.
// Turn on auto Q/B decoding for all strings passed to any Chilkat method in any Chilkat class.
var glob = new CkGlobal();
glob.AutoQBDecode = true;
// ---------------------------------------------------------------------------------------------------------------------------------------------
// "Q" Encoding
// Quoted-Printable encoding is primarily used for text that is mostly ASCII with some non-ASCII characters.
// It encodes these characters in a way that remains mostly readable and compatible with ASCII-only systems.
// How It Works with UTF-8:
// - ASCII characters (except special characters like `=`) are encoded as themselves.
// - Non-ASCII characters are represented by their UTF-8 byte values, each byte encoded as `=` followed by two hexadecimal digits.
// For example, the UTF-8 character "é" (U+00E9) is encoded as `=C3=A9`.
// For example, consider the text "Café" encoded in UTF-8. The UTF-8 bytes for "é" are `C3 A9`, so in Quoted-Printable, it looks like this: Caf=C3=A9
// The "Q" encoding has this syntax: "=?charset?q?encoded_text?="
// For example: "=?UTF-8?Q?Caf=C3=A9_announcement?="
// ------
// "B" Encoding
// Base64 encoding is used to encode non-ASCII text, making it more suitable for text with a high density of non-ASCII characters, such as those found in non-Western European languages.
// For example, consider the text "こんにちは" ("Hello" in Japanese).
// The "B" encoded string would be "=?UTF-8?B?44GT44KT44Gr44Gh44Gv?="
// ------
// Q encoding is suitable for text that is mostly ASCII.
// B Encoding is best for text that is densely packed with non-us-ascii chars, such as non-Latin (Asian) languages.
// ---------------------------------------------------------------------------------------------------------------------------------------------
// You can use Chilkat's online tool at Online Binary Encoder to pre-encode your literal strings before
// inserting them into your source code.
// When using the online tool, choose either "MIME header Q Encoding" or "MIME Header B Encoding".
// For example:
var s_cafe = "=?utf-8?Q?Caf=C3=A9?=";
var s1 = new CkStringBuilder();
s1.Append(s_cafe);
console.log(s1.GetAsString());
// Output is Café
var s_hello = "=?UTF-8?B?44GT44KT44Gr44Gh44Gv?=";
var s2 = new CkStringBuilder();
s2.Append(s_hello);
console.log(s2.GetAsString());
// Output is こんにちは
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