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Conversions between EUC_TW and Big5 were previously implemented by converting the whole input to MIC first, and then from MIC to the target encoding. Implement functions to convert directly between the two. The reason to do this now is that I'm working on a patch that will change the conversion function signature so that if the input is invalid, we convert as much as we can and return the number of bytes successfully converted. That's not possible if we use an intermediary format, because if an error happens in the intermediary -> final conversion, we lose track of the location of the invalid character in the original input. Avoiding the intermediate step makes the conversions faster, too. Reviewed-by: John Naylor Discussion: https://www.postgresql.org/message-id/b9e3167f-f84b-7aa4-5738-be578a4db924%40iki.fi |
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PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download/ See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.