f554af0a9f
Hi, here are patches I promised (against 6.3.2):
* character_length(), position(), substring() are now aware of
multi-byte characters
* add octet_length()
* add --with-mb option to configure
* new regression tests for EUC_KR
(contributed by "Soonmyung. Hong" <hong@lunaris.hanmesoft.co.kr>)
* add some test cases to the EUC_JP regression test
* fix problem in regress/regress.sh in case of System V
* fix toupper(), tolower() to handle 8bit chars
note that:
o patches for both configure.in and configure are
included. maybe the one for configure is not necessary.
o pg_proc.h was modified to add octet_length(). I used OIDs
(1374-1379) for that. Please let me know if these numbers are not
appropriate.
88 lines
2.3 KiB
Plaintext
88 lines
2.3 KiB
Plaintext
postgresql 6.3 multi-byte (MB) support README April 21 1998
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Tatsuo Ishii
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t-ishii@sra.co.jp
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http://www.sra.co.jp/people/t-ishii/PostgreSQL/
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Introduction
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The MB support is intended for allowing PostgreSQL to handle
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multi-byte character sets such as EUC(Extended Unix Code), Unicode and
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Mule internal code. With the MB enabled you can use multi-byte
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character sets in regexp ,LIKE and some functions. The encoding system
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chosen is determined at the compile time.
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MB also fixes some problems concerning with 8-bit single byte
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character sets including ISO8859. (I would not say all of problems
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have been fixed. I just confirmed that the regression test ran fine
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and a few French characters could be used with the patch. Please let
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me know if you find any problem while using 8-bit characters)
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How to use
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create src/Makefile.custom with a line including:
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MB=encoding_system
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or run configure with the mb option:
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% configure --with-mb=encoding_system
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where encoding_system is one of:
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EUC_JP Japanese EUC
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EUC_CN Chinese EUC
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EUC_KR Korean EUC
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EUC_TW Taiwan EUC
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UNICODE Unicode(UTF-8)
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MULE_INTERNAL Mule internal
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Example:
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% cat Makefile.custom
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MB=EUC_JP
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or
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% configure --with-mb=EUC_JP
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If MB is disabled, nothing is changed except better supporting for
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8-bit single byte character sets.
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References
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These are good sources to start learning various kind of encoding
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systems.
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ftp://ftp.ora.com/pub/examples/nutshell/ujip/doc/cjk.inf
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Detailed explanations of EUC_JP, EUC_CN, EUC_KR, EUC_TW
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appear in section 3.2.
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Unicode: http://www.unicode.org/
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The homepage of UNICODE.
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RFC 2044
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UTF-8 is defined here.
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History
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April 21, 1998 some enhancements/fixes
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* character_length(), position(), substring() are now aware of
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multi-byte characters
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* add octet_length()
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* add --with-mb option to configure
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* new regression tests for EUC_KR
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(contributed by "Soonmyung. Hong" <hong@lunaris.hanmesoft.co.kr>)
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* add some test cases to the EUC_JP regression test
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* fix problem in regress/regress.sh in case of System V
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* fix toupper(), tolower() to handle 8bit chars
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Mar 25, 1998 MB PL2 is incorporated into PostgreSQL 6.3.1
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Mar 10, 1998 PL2 released
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* add regression test for EUC_JP, EUC_CN and MULE_INTERNAL
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* add an English document (this file)
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* fix problems concerning 8-bit single byte characters
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Mar 1, 1998 PL1 released
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