详细描述

SystemCodePage

• SystemCodePage encodes characters from Utf32Char to the active system code page (UChar).
• SystemCodePage decodes characters from the active systemcodepage (UChar) to Utf32Char

Details:

• this encoder/decoder uses system functions for the encoding. Under windows [ http://msdn.microsoft.com/en-us/library/windows/desktop/dd319072(v=vs.85).aspx ]MultiByteToWideChar and [ http://msdn.microsoft.com/en-us/library/windows/desktop/dd374130(v=vs.85).aspx ]WideCharToMultiByte are used.

Errors:
Returns an error if the system functions return errors.

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Bit8

• encodes characters from Utf32Char to UChar
• decodes characters from UChar to Utf32Char

Details:

• characters in the range 0..255 are encoded as single byte values

Errors:
Returns an error if character codes outside the valid range are used.

---

Bit7Hex

• encodes characters from UniChar to UChar
• decodes characters from UChar to UniChar

Details:

• characters in the range 0..127 are encoded as single byte values
• characters above 127 are encoded into a sequence of bytes with the format \uhhhh where each hhhh is the hex value representing the character in Unicode space.

Errors:
Returns an error if character codes outside the valid range are used.

---

UTF-8

• encodes characters from Utf32Char to UChar
• decodes characters from UChar to Utf32Char

Details:
UTF-8 (UCS Transformation Format-8-bit) is a variable-width encoding that can represent every character in the Unicode character set. Depending on the number range a UniCode character is encoded in either a single byte or multiple bytes where the byte sequence starts with a leading byte followed by one or more continuation bytes. Currently the 32bit UniCode range below 0x10000 is supported (resulting in up to 4 byte sequences)

Errors:
Returns an error if byte code sequences (unicode >=0x10000) with more then 4 bytes are used for decoding.

注意

UTF-8 was designed for backward compatibility with ASCII and to avoid the complications of endianness and byte order marks in UTF-16 and UTF-32. UTF-8 has become the dominant character encoding for the World Wide Web, accounting for more than half of all Web pages. The Internet Mail Consortium (IMC) recommends that all e-mail programs be able to display and create mail using UTF-8. UTF-8 is also increasingly being used as the default character encoding in operating systems, programming languages, APIs, and software applications. More details can be found here: http://en.wikipedia.org/wiki/UTF-8

---

UTF-16

• encodes characters from Utf32Char to UTF-16
• decodes characters from UTF-16 to Utf32Char

Details:
UTF-16 is a variable-width encoding that can represent every character in the Unicode character set. Depending on the number range a UniCode character is encoded in either a single or two 16-bit values.

Errors:
Returns an error if an illegal code sequence is detected during decoding.

More details can be found here: http://en.wikipedia.org/wiki/UTF-16

Url

• Url encodes characters from Utf32Char to UChar
• Url decodes characters from UChar to Utf32Char

Details:

• only characters in the range 0..255 are accepted
• all characters which are not Unreserved Characters are encoded using percent encoding- for example the space character " " is encoded as "%20" More details can be found here: http://www.ietf.org/rfc/rfc3986.txt

Errors:
Returns an error if character codes outside the valid range are used.

Url

• Url encodes characters from Utf32Char to UChar
• Url decodes characters from UChar to Utf32Char Details:
  
• only characters in the range 0..255 are accepted
• all characters which are not Unreserved Characters are encoded using percent encoding- for example the space character " " is encoded as "%20" More details can be found here: http://www.ietf.org/rfc/rfc3986.txt
• additionally the backslash '\' is a reserved character and hence ignored for encoding

Errors:
Returns an error if character codes outside the valid range are used.

Url

• Url encodes characters from Utf32Char to UChar
• Url decodes characters from UChar to Utf32Char

Details:

• only characters in the range 0..255 are accepted
• all characters which are not Unreserved Characters are encoded using percent encoding- for example the space character " " is encoded as "%20" More details can be found here: http://www.ietf.org/rfc/rfc3986.txt
• additionally the characters '&', '=', '$', '+', ',', ':', ';' and '@' are reserved characters and hence ignored for encoding

Errors:
Returns an error if character codes outside the valid range are used.

Url

• Url encodes characters from Utf32Char to UChar
• Url decodes characters from UChar to Utf32Char

Details:

• only characters in the range 0..255 are accepted
• all characters which are not Unreserved Characters are encoded using percent encoding- for example the space character " " is encoded as "%20" More details can be found here: http://www.ietf.org/rfc/rfc3986.txt
• all characters will be encoded.

Errors:
Returns an error if character codes outside the valid range are used.

---

CodePage437

• encodes characters from Utf32Char to UChar
• decodes characters from UChar to Utf32Char

Details:

• characters in the range 0..255 are encoded using the codepage 437. more details see: http://en.wikipedia.org/wiki/Codepage_437

Errors:
Returns an error if character codes outside the valid range are used.

函数
	MAXON_DECLARATION (maxon::StringEncodingRef, SystemCodePage, "net.maxon.stringencoding." "systemcodepage")
	MAXON_DECLARATION (maxon::StringEncodingRef, Bit8, "net.maxon.stringencoding." "bit8")
	MAXON_DECLARATION (maxon::StringEncodingRef, Bit7Hex, "net.maxon.stringencoding." "hex7")
	MAXON_DECLARATION (maxon::StringEncodingRef, Utf8, "net.maxon.stringencoding." "utf8")
	MAXON_DECLARATION (maxon::StringEncodingRef, Utf16, "net.maxon.stringencoding." "utf16")
	MAXON_DECLARATION (maxon::StringEncodingRef, Url , "net.maxon.stringencoding." "url")
	MAXON_DECLARATION (maxon::StringEncodingRef, Url32, "net.maxon.stringencoding." "url32")
	MAXON_DECLARATION (maxon::StringEncodingRef, UrlPath, "net.maxon.stringencoding." "urlpath")
	MAXON_DECLARATION (maxon::StringEncodingRef, UrlQuery, "net.maxon.stringencoding." "urlquery")
	MAXON_DECLARATION (maxon::StringEncodingRef, UrlQueryParameter, "net.maxon.stringencoding." "urlqueryparam")
	MAXON_DECLARATION (maxon::StringEncodingRef, CodePage437, "net.maxon.stringencoding." "codepage437")

Function Documentation

◆  MAXON_DECLARATION() [1/11]

maxon::StringEncodings::MAXON_DECLARATION	(	maxon::StringEncodingRef	,
		SystemCodePage	,
		"net.maxon.stringencoding." "systemcodepage"
	)