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Add constants BOM_UTF8, BOM_UTF16, BOM_UTF16_LE, BOM_UTF16_BE,

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BOM_UTF32, BOM_UTF32_LE and BOM_UTF32_BE that represent the Byte
Order Mark in UTF-8, UTF-16 and UTF-32 encodings for little and
big endian systems.

The old names BOM32_* and BOM64_* were off by a factor of 2.

This closes SF bug http://www.python.org/sf/555360
This commit is contained in:
Walter Dörwald 2002-06-04 15:16:29 +00:00
parent bc48826dc2
commit 474458da48
3 changed files with 53 additions and 27 deletions
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25
Doc/lib/libcodecs.tex
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@ -142,16 +142,21 @@ for reading and writing to platform dependent files:
\begin{datadesc}{BOM}
\dataline{BOM_BE}
\dataline{BOM_LE}
\dataline{BOM32_BE}
\dataline{BOM32_LE}
\dataline{BOM64_BE}
\dataline{BOM64_LE}
These constants define the byte order marks (BOM) used in data
streams to indicate the byte order used in the stream or file.
\constant{BOM} is either \constant{BOM_BE} or \constant{BOM_LE}
depending on the platform's native byte order, while the others
represent big endian (\samp{_BE} suffix) and little endian
(\samp{_LE} suffix) byte order using 32-bit and 64-bit encodings.
\dataline{BOM_UTF8}
\dataline{BOM_UTF16}
\dataline{BOM_UTF16_BE}
\dataline{BOM_UTF16_LE}
\dataline{BOM_UTF32}
\dataline{BOM_UTF32_BE}
\dataline{BOM_UTF32_LE}
These constants define various encodings of the Unicode byte order mark
(BOM) used in UTF-16 and UTF-32 data streams to indicate the byte order
used in the stream or file and in UTF-8 as a Unicode signature.
\constant{BOM_UTF16} is either \constant{BOM_UTF16_BE} or
\constant{BOM_UTF16_LE} depending on the platform's native byte order,
\constant{BOM} is an alias for \constant{BOM_UTF16}, \constant{BOM_LE}
for \constant{BOM_UTF16_LE} and \constant{BOM_BE} for \constant{BOM_UTF16_BE}.
The others represent the BOM in UTF-8 and UTF-32 encodings.
\end{datadesc}