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#!/bin/bash -e
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# Translates a MySQL DB export to PostgreSQL
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# The export must be created with:
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# `--compatible=postgresql --add-locks=false --set-charset`
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# Usage: self {input...|<input} >translated
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if false; then #### whenever this script is changed:
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(slash=/; for my in inputs/{.,}*/_MySQL/*.schema.sql; do
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pg="${my/_MySQL$slash/}"
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make "$pg"-remake
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done)
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fi ####
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. "$(dirname "$(readlink -f "${BASH_SOURCE[0]}")")"/../lib/sh/util.sh
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sed \
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-e 's/`/"/g' \
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-e 's! UNIQUE KEY ("[^"]*")! /*CONSTRAINT \1 */UNIQUE!g' \
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-e 's/ UNIQUE KEY/ UNIQUE/g' \
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-e 's!^ ((CONSTRAINT "[^"]*" )?((FULLTEXT|FOREIGN) )?KEY .*[^,])(,?)$! /*\1*/CHECK (true)\5!' \
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-e "s!/\*.* (SET NAMES )([0-9A-Za-z_]+) \*/;!\1'\2';!" \
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-e 's/ (CHARACTER SET|COLLATE) [0-9A-Za-z_]+//g' \
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-e "s! (COMMENT '.*')! /*\1*/!g
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# COMMENTs never span multiple lines because newlines are encoded as \n" \
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-e 's!^\) (.*);$!) /*\1*/;!g
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# comment out table options' \
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${sql_ascii:+-e 's/ varbinary/ text/g' }\
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-e 's/ (binary|blob|varbinary)/ bytea/g' \
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-e 's/ (tinytext|mediumtext|longtext)/ text/g' \
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-e 's/ (int|mediumint|smallint|tinyint)([ (])/ integer\2/g' \
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-e 's/ double/ double precision/g' \
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-e 's/ (integer|bigint|bytea|double precision|float|text)(\([^)]*\))?( unsigned)?/ \1/g' \
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-e 's/ (char)\(0\)/ \1/g' \
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-e 's! (date|datetime|time|timestamp)! text/*\1*/!g' \
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-e 's/ ("[^"]*") enum(\([^()]*\))/ \1 text CHECK (\1 in \2)/g' \
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-e "s/ set\('([^()]*)'\)/ \1/g" \
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"$@"\
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|"$top_dir/my2pg.data"
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