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pgsql: Fix mapping of PostgreSQL encodings to Python encodings.

Heikki Linnakangas <heikki.linnakangas@iki.fi>

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From: Heikki Linnakangas <heikki.linnakangas@iki.fi>
To: pgsql-committers@postgresql.org
Date: 2012-07-05T19:33:38Z
Lists: pgsql-hackers 
Fix mapping of PostgreSQL encodings to Python encodings.

Windows encodings, "win1252" and so forth, are named differently in Python,
like "cp1252". Also, if the PyUnicode_AsEncodedString() function call fails
for some reason, use a plain ereport(), not a PLy_elog(), to report that
error. That avoids recursion and crash, if PLy_elog() tries to call
PLyUnicode_Bytes() again.

This fixes bug reported by Asif Naeem. Backpatch down to 9.0, before that
plpython didn't even try these conversions.

Jan Urbański, with minor comment improvements by me.

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/b66de4c6d7208d9ec420b912758377a3533c7a7d

Modified Files
--------------
src/pl/plpython/plpy_util.c |   69 ++++++++++++++++++++++++++++++++++++++----
1 files changed, 62 insertions(+), 7 deletions(-)

Commits

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  1. Fix mapping of PostgreSQL encodings to Python encodings.