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Topic: UTF-16

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UTF : Java Glossary UTF strings are interconverted to ordinary Strings during I/O by readUTF and writeUTF or by using Readers and Writers with an encoding. The resulting pair of 16 bit characters are in the so-called so-called high-half zone or high surrogate area (0xdc800-0xdbff) and low-half zone or low surrogate area (0xdcff-0xdfff). There are two different standards, Unicode which assigns glyphs to numbers, and UTF which describes how you encode these number in a file. mindprod.com /jgloss/utf.html   (729 words)

FAQ - UTF and BOM Each UTF is reversible, thus every UTF supports lossless round tripping: mapping from any Unicode coded character sequence S to a sequence of bytes and back will produce S again. The SCSU compression method, even though it is reversible, is not a UTF because the same string can map to very many different byte sequences, depending on the particular SCSU compressor. A: A Unicode transformation format (UTF) is an algorithmic mapping from every Unicode code point (except surrogate code points) to a unique byte sequence. www.unicode.org /faq/utf_bom.html#22   (4895 words)

Info: (recode.info) UTF-16 Universal Transformation Format, 16 bits ======================================== Another external surface of `UCS' is also variable length, each character using either two or four bytes. www.cims.nyu.edu /cgi-comment/info2html?(recode.info)UTF-16   (149 words)

ongoing · Characters vs. Bytes Past the BMP, planes 1 through 16 are sometimes humorously called the “astral planes” and are used for exotic, rare, and historically important characters. Many people assumed that 16 bits of address space is all you'd ever need, then repeated the error with 32 bits. UTF Along with the characters, Unicode also defines methods for storing them in byte sequences in a computer. www.tbray.org /ongoing/When/200x/2003/04/26/UTF   (2663 words)

UTF-8 - Wikipedia, the free encyclopedia In Java a character is 16 bits long; therefore some Unicode characters require two Java characters in order to be represented. This aspect of the language predates the supplementary planes of Unicode; however, it is important for performance as well as backwards compatibility, and is unlikely to change. The reason for this modification is more subtle. en.wikipedia.org /wiki/UTF-8   (2173 words)

Extended UCS-2 Encoding Form (UTF-16) As is clear by the above example, UTF-16 is essentially a variable length encoding technique that supports the characters in the BMP and the 16 planes immediately following the BMP. These codes are then mapped from/onto 16 planes (1-10) of group 0. The introduction of a variable length encoding brings up a number of important issues for implementations which are similar to the issues encountered in common double byte character systems, in which single byte and double byte characters are mixed together. www.terena.nl /library/multiling/unicode/utf16.html   (905 words)

UTF-16 - Wikipédia UTF-16 est un codage des caractères définis par Unicode où chaque caractère est codé sur une suite de un ou deux mots de 16 bits. fr.wikipedia.org /wiki/UTF-16   (48 words)

Unicode Transformation Formats Besides the incompatibilities there is also the argument that it is wasteful to have one character occupy 16 or 32 bits instead of 8 bits because that would double or quadruple file sizes and memory images. Besides that, the UTF representation of Latin1's accented letters contains the original code prefixed by a pound sign (£) which means that it readability is remained in Latin1 applications. A fixed length of 16 bits has the problem that only 2^16 == 65'536 characters can be encoded. czyborra.com /utf   (5676 words)

unicode.html When such ASCII strings are encoded in the UTF -32 and 16 formats, they become interspersed with bytes of the form 00, which represent the NULL control character. Also there is the general possiblity of UTF-16/32 bytes being interpreted as 7-bit ASCII when this was not the intention, which could cause major problems. It thus requires 21 binary bits to represent the largest value, and might be called a "21 bit charset." In earlier versions Unicode had a smaller codespace and 16 bits was sufficient. homepage.mac.com /thgewecke/unicode.html   (338 words)

UTF-16 - Wikipédia Dado o código UTF-16 (seja com 16, seja com 32 bits), este há de ser "serializado", isto é, seus bits colocados em alguma ordem bem definida. pt.wikipedia.org /wiki/UTF-16   (661 words)

[darcs-users] UTF-16 (was: Default binary masks) Anywhere you process UTF-16, you are dealing with 16 bit codepoints. Ruby, C, and Java byte stream accessors all return > single bytes (although Java returns the bytes as ints, which are 16 > bit, the ints only contain 8 significant bits). If your underlying file access is on an octet basis (as it would be in most of the systems in this discussion), then you read, write and move 2 octets at a time on that level. abridgegame.org /pipermail/darcs-users/2003/000734.html   (936 words)

UTF-16 16 bits per codepoint, almost fixed width (but surrogates) Must often decide by hand if a char is a character or a byte pipin.tmd.ns.ac.yu /unicode/www.unicode.org/iuc/iuc15/b11/sld006.htm   (23 words)

PEP 100 -- Python Unicode Integration The Unicode API should provide interface routines from to the compiler's wchar_t which can be 16 or 32 bit depending on the compiler/libc/platform being used. The internal format for Unicode objects should use a Python specific fixed format implemented as 'unsigned short' (or another unsigned numeric type having 16 bits). 1.6: Changed to since this is the name used in the implementation. www.python.org /peps/pep-0100.html   (4012 words)

Unicode Data Transfer Formats A UTF-16 mapping takes valid Unicode code point values and translates them into one or two 16 bit values. An encoder will simply write the 16 bit values in sequential order, and a decoder will read the 16 bit values one at a time and try to fit them to a reverse mapping. Each 16 bit value is encoded as a pair of octets. www.azillionmonkeys.com /qed/unicode.html   (1887 words)

UTF-16 - Wikipedia UTF-16 (16-bit Unicode Transformation Format), es un código de caracteres que proporciona una forma de representar caracteres unicode e ISO/IEC 10646 como una serie de palabras de 16 bits susceptibles de ser almacenados o transmitidos a través de redes de datos. es.wikipedia.org /wiki/UTF-16   (146 words)

UCS Transformation Format 16 (UTF-16) A UCS Transformation Format (UTF-16) is specified in Annex O which can be used to represent characters from 16 planes, additional to the BMP, in a form that is compatible with the two-octet BMP form. When the escape sequences from ISO 2022 are used, the identification of the return from UTF-16 to the coding system of ISO 2022 shall be by the escape sequence ESC 02/05 04/00. In addition, the coded representation of any character from a single contiguous block of 16 Planes in Group 00 (1,048,576 code positions) is transformed to pairs of two-octet sequences, where each sequence corresponds to a cell in a single contiguous block of 8 Rows in the BMP (2,048 code positions). www.uazone.org /multiling/unicode/wg2n1035.html   (1901 words)

UTF-8: What is It and Why is It Important In other words, UTF-16 or UTF-32 require 16 or 32 bits of storage for most characters instead of a single byte required by the series of ISO-8859 encodings. When a string of 16 or 32 bit values are processed as a series of byte values, the value This complicates and confuses existing text processing algorithms, leading to miscalculated string lengths, oddly concatenated strings, and search failures. www.joconner.com /javai18n/articles/UTF8.html   (1579 words)

jGuru: which utf encoding provide support for multiple language? Kindly assist me in telling which 'utf encoding' would be better (utf-16 or utf-8 or any other)? If by 'support' you mean integration with other systems with different character sets, then UTF-16 is the way to go. These are the following observations I found after struggling on net for utf-16 & utf-8... www.jguru.com /forums/view.jsp?EID=1227908   (580 words)

Glossary The Unicode encoding form which assigns each Unicode scalar value in the ranges U+0000..U+D7FF and U+E000..U+FFFF to a single unsigned 16-bit code unit with the same numeric value as the Unicode scalar value, and which assigns each Unicode scalar value in the range U+10000..U+10FFFF to a surrogate pair, according to Table 3-4, UTF-16 Bit Distribution. Planes are numbered from 0 to 16, with the number being the first code point of the plane divided by 65,536. (3) “Transformation format for 16 planes of Group 00,” defined in Annex C of ISO/IEC 10646:2003, technically equivalent to the definitions in the Unicode Standard. www.unicode.org /glossary   (7489 words)

10065 7) I've converted some large Java text processing apps to C++, and converted the Java 16 bit char's to using UTF-8. 5) 16 bit accesses on Intel CPUs can be pretty slow compared to byte or dword accesses (varies by CPU type). www.digitalmars.com /drn-bin/wwwnews?D/10065   (1083 words)

Production First Software Encyclopedia of Typography and Electronic Communication : U An encoding transformation form which conforms to Unicode character semantics, extended with surrogate code points, so as to be able to reference the first group of 17 planes (planes 0 through 16) of ISO/IEC/10646. An encoding transformation form which conforms to Unicode character semantics, able to reference the first group of 17 planes (planes 0 through 16) of ISO/IEC/10646 directly using 32-bit code points instead of surrogate code points. A fixed-width, double-byte (16 bit) encoding standard covering many language alphabets and scripts. ourworld.compuserve.com /homepages/profirst/u.htm   (2351 words)

RFC 2044 (rfc2044) This situation has led to the development of so-called UCS transformation formats (UTF), each with different characteristics. Abstract The Unicode Standard, version 1.1, and ISO/IEC 10646-1:1993 jointly define a 16 bit character set which encompasses most of the world's writing systems. UTF-8, the object of this memo, has the characteristic of preserving the full US-ASCII range: US-ASCII characters are encoded in one octet having the usual US-ASCII value, and any octet with such a value can only be an US-ASCII character. www.cse.ohio-state.edu /cgi-bin/rfc/rfc2044.html   (1426 words)

XML/encoding.h - annotate - 1.22 15: * 16: * See Copyright for the status of this software. dev.w3.org /cvsweb/XML/encoding.h?annotate=1.22   (488 words)

RLG DigiNews Volume , Number 2 Computer circuitry operates most efficiently when processing bytes that are 8, 16, 32 or 64 bits wide. A character encoding scheme also controls the order of the 8-bit sequences—important because computers may treat 16-bit numbers as pairs of 8-bit numbers, transmitting data one byte at a time (sometimes the lower half first, sometimes the higher half first). the algorithm (or logical description of the process) used to convert 16- and 32-bit code values to a sequence of one or more 8-bit values. www.rlg.org /en/newsletters/rlgdiginews_extras/v8_n2_glossary.html   (2697 words)

RFC 2781 - UTF-16, an encoding of ISO 10646. P. Hoffman, F. Yergeau. RFC 2781 UTF-16, an encoding of ISO 10646 February 2000 The term "network byte order" has been used in many RFCs to indicate big-endian serialization, although that term has yet to be formally defined in a standards-track document. The following C code fragment demonstrates a way to write 16- bit quantities to a file in big-endian order, irrespective of the hardware's native byte order. void write_be(unsigned short u, FILE f) /* assume short is 16 bits */ { putc(u >> 8, f); /* output high-order byte */ putc(u and 0xFF, f); /* then low-order */ } Hoffman and Yergeau Informational [Page 4] rfc.sunsite.dk /rfc/rfc2781.html   (3669 words)

Sorting It All Out : UCS-2 vs. UTF-16 (not quite Kramer vs. Kramer) Now when Windows 2000 first shipped, there were not any actual defined supplementary characters (other than the Plane 14 language tags that no one liked or the Plane 15 and 16 private use characters that no one used). And here is where the issue of surrogate pairs gets interesting.... beta.blogs.msdn.com /michkap/archive/2005/05/11/416552.aspx   (1018 words)

UTF 16 not 8 from soap if the response is UTF 16 from soap then it appears as if lcresult is empty www.west-wind.com /wwthreads/Message1MN0TD7YA.wwt   (65 words)

UTN #12: UTF-16 for Processing Another potential problem is that while conversion between UTFs is lossless, conversion between 8/16/32-bit Unicode strings which are not well-formed UTF-8/16/32 strings is not defined. Conversion among UTFs is fast and reliable, but still takes some time and code. Conversion also needs to extend beyond the string representation itself to string indexes, offsets and lengths, which can be visible across a protocol (e.g., SQL) or a software boundary (e.g., Java/JNI). www.unicode.org /notes/tn12   (1711 words)

ApacheCon 2002, Las Vegas, NV: XML and I18N by Sander van Zoest These three forms, formally known as UTF-8, UTF-16 and UTF-32, provide developers with three ways to use Unicode. The Consortium has defined three encoding forms (mappings from a character set definition to the actual code units used to represent the data) that allow the data to be transmitted in 8, 16 and 32-bits. Unicode Frequently Asked Questions: UTF and BOM . sander.vanzoest.com /talks/2002/xml_and_i18n   (2204 words)

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