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-rw-r--r--src/test/regress/sql/conversion.sql365
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diff --git a/src/test/regress/sql/conversion.sql b/src/test/regress/sql/conversion.sql
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+--
+-- create user defined conversion
+--
+
+-- directory paths and dlsuffix are passed to us in environment variables
+\getenv libdir PG_LIBDIR
+\getenv dlsuffix PG_DLSUFFIX
+
+\set regresslib :libdir '/regress' :dlsuffix
+
+CREATE FUNCTION test_enc_conversion(bytea, name, name, bool, validlen OUT int, result OUT bytea)
+ AS :'regresslib', 'test_enc_conversion'
+ LANGUAGE C STRICT;
+
+CREATE USER regress_conversion_user WITH NOCREATEDB NOCREATEROLE;
+SET SESSION AUTHORIZATION regress_conversion_user;
+CREATE CONVERSION myconv FOR 'LATIN1' TO 'UTF8' FROM iso8859_1_to_utf8;
+--
+-- cannot make same name conversion in same schema
+--
+CREATE CONVERSION myconv FOR 'LATIN1' TO 'UTF8' FROM iso8859_1_to_utf8;
+--
+-- create default conversion with qualified name
+--
+CREATE DEFAULT CONVERSION public.mydef FOR 'LATIN1' TO 'UTF8' FROM iso8859_1_to_utf8;
+--
+-- cannot make default conversion with same schema/for_encoding/to_encoding
+--
+CREATE DEFAULT CONVERSION public.mydef2 FOR 'LATIN1' TO 'UTF8' FROM iso8859_1_to_utf8;
+-- test comments
+COMMENT ON CONVERSION myconv_bad IS 'foo';
+COMMENT ON CONVERSION myconv IS 'bar';
+COMMENT ON CONVERSION myconv IS NULL;
+--
+-- drop user defined conversion
+--
+DROP CONVERSION myconv;
+DROP CONVERSION mydef;
+--
+-- Note: the built-in conversions are exercised in opr_sanity.sql,
+-- so there's no need to do that here.
+--
+--
+-- return to the superuser
+--
+RESET SESSION AUTHORIZATION;
+DROP USER regress_conversion_user;
+
+--
+-- Test built-in conversion functions.
+--
+
+-- Helper function to test a conversion. Uses the test_enc_conversion function
+-- that was created in the create_function_0 test.
+create or replace function test_conv(
+ input IN bytea,
+ src_encoding IN text,
+ dst_encoding IN text,
+
+ result OUT bytea,
+ errorat OUT bytea,
+ error OUT text)
+language plpgsql as
+$$
+declare
+ validlen int;
+begin
+ -- First try to perform the conversion with noError = false. If that errors out,
+ -- capture the error message, and try again with noError = true. The second call
+ -- should succeed and return the position of the error, return that too.
+ begin
+ select * into validlen, result from test_enc_conversion(input, src_encoding, dst_encoding, false);
+ errorat = NULL;
+ error := NULL;
+ exception when others then
+ error := sqlerrm;
+ select * into validlen, result from test_enc_conversion(input, src_encoding, dst_encoding, true);
+ errorat = substr(input, validlen + 1);
+ end;
+ return;
+end;
+$$;
+
+
+--
+-- UTF-8
+--
+-- The description column must be unique.
+CREATE TABLE utf8_verification_inputs (inbytes bytea, description text PRIMARY KEY);
+insert into utf8_verification_inputs values
+ ('\x66006f', 'NUL byte'),
+ ('\xaf', 'bare continuation'),
+ ('\xc5', 'missing second byte in 2-byte char'),
+ ('\xc080', 'smallest 2-byte overlong'),
+ ('\xc1bf', 'largest 2-byte overlong'),
+ ('\xc280', 'next 2-byte after overlongs'),
+ ('\xdfbf', 'largest 2-byte'),
+ ('\xe9af', 'missing third byte in 3-byte char'),
+ ('\xe08080', 'smallest 3-byte overlong'),
+ ('\xe09fbf', 'largest 3-byte overlong'),
+ ('\xe0a080', 'next 3-byte after overlong'),
+ ('\xed9fbf', 'last before surrogates'),
+ ('\xeda080', 'smallest surrogate'),
+ ('\xedbfbf', 'largest surrogate'),
+ ('\xee8080', 'next after surrogates'),
+ ('\xefbfbf', 'largest 3-byte'),
+ ('\xf1afbf', 'missing fourth byte in 4-byte char'),
+ ('\xf0808080', 'smallest 4-byte overlong'),
+ ('\xf08fbfbf', 'largest 4-byte overlong'),
+ ('\xf0908080', 'next 4-byte after overlong'),
+ ('\xf48fbfbf', 'largest 4-byte'),
+ ('\xf4908080', 'smallest too large'),
+ ('\xfa9a9a8a8a', '5-byte');
+
+-- Test UTF-8 verification slow path
+select description, (test_conv(inbytes, 'utf8', 'utf8')).* from utf8_verification_inputs;
+
+-- Test UTF-8 verification with ASCII padding appended to provide
+-- coverage for algorithms that work on multiple bytes at a time.
+-- The error message for a sequence starting with a 4-byte lead
+-- will contain all 4 bytes if they are present, so various
+-- expressions below add 3 ASCII bytes to the end to ensure
+-- consistent error messages.
+-- The number 64 below needs to be at least the value of STRIDE_LENGTH in wchar.c.
+
+-- Test multibyte verification in fast path
+with test_bytes as (
+ select
+ inbytes,
+ description,
+ (test_conv(inbytes || repeat('.', 3)::bytea, 'utf8', 'utf8')).error
+ from utf8_verification_inputs
+), test_padded as (
+ select
+ description,
+ (test_conv(inbytes || repeat('.', 64)::bytea, 'utf8', 'utf8')).error
+ from test_bytes
+)
+select
+ description,
+ b.error as orig_error,
+ p.error as error_after_padding
+from test_padded p
+join test_bytes b
+using (description)
+where p.error is distinct from b.error
+order by description;
+
+-- Test ASCII verification in fast path where incomplete
+-- UTF-8 sequences fall at the end of the preceding chunk.
+with test_bytes as (
+ select
+ inbytes,
+ description,
+ (test_conv(inbytes || repeat('.', 3)::bytea, 'utf8', 'utf8')).error
+ from utf8_verification_inputs
+), test_padded as (
+ select
+ description,
+ (test_conv(repeat('.', 64 - length(inbytes))::bytea || inbytes || repeat('.', 64)::bytea, 'utf8', 'utf8')).error
+ from test_bytes
+)
+select
+ description,
+ b.error as orig_error,
+ p.error as error_after_padding
+from test_padded p
+join test_bytes b
+using (description)
+where p.error is distinct from b.error
+order by description;
+
+-- Test cases where UTF-8 sequences within short text
+-- come after the fast path returns.
+with test_bytes as (
+ select
+ inbytes,
+ description,
+ (test_conv(inbytes || repeat('.', 3)::bytea, 'utf8', 'utf8')).error
+ from utf8_verification_inputs
+), test_padded as (
+ select
+ description,
+ (test_conv(repeat('.', 64)::bytea || inbytes || repeat('.', 3)::bytea, 'utf8', 'utf8')).error
+ from test_bytes
+)
+select
+ description,
+ b.error as orig_error,
+ p.error as error_after_padding
+from test_padded p
+join test_bytes b
+using (description)
+where p.error is distinct from b.error
+order by description;
+
+-- Test cases where incomplete UTF-8 sequences fall at the
+-- end of the part checked by the fast path.
+with test_bytes as (
+ select
+ inbytes,
+ description,
+ (test_conv(inbytes || repeat('.', 3)::bytea, 'utf8', 'utf8')).error
+ from utf8_verification_inputs
+), test_padded as (
+ select
+ description,
+ (test_conv(repeat('.', 64 - length(inbytes))::bytea || inbytes || repeat('.', 3)::bytea, 'utf8', 'utf8')).error
+ from test_bytes
+)
+select
+ description,
+ b.error as orig_error,
+ p.error as error_after_padding
+from test_padded p
+join test_bytes b
+using (description)
+where p.error is distinct from b.error
+order by description;
+
+CREATE TABLE utf8_inputs (inbytes bytea, description text);
+insert into utf8_inputs values
+ ('\x666f6f', 'valid, pure ASCII'),
+ ('\xc3a4c3b6', 'valid, extra latin chars'),
+ ('\xd184d0bed0be', 'valid, cyrillic'),
+ ('\x666f6fe8b1a1', 'valid, kanji/Chinese'),
+ ('\xe382abe3829a', 'valid, two chars that combine to one in EUC_JIS_2004'),
+ ('\xe382ab', 'only first half of combined char in EUC_JIS_2004'),
+ ('\xe382abe382', 'incomplete combination when converted EUC_JIS_2004'),
+ ('\xecbd94eb81bceba6ac', 'valid, Hangul, Korean'),
+ ('\x666f6fefa8aa', 'valid, needs mapping function to convert to GB18030'),
+ ('\x66e8b1ff6f6f', 'invalid byte sequence'),
+ ('\x66006f', 'invalid, NUL byte'),
+ ('\x666f6fe8b100', 'invalid, NUL byte'),
+ ('\x666f6fe8b1', 'incomplete character at end');
+
+-- Test UTF-8 verification
+select description, (test_conv(inbytes, 'utf8', 'utf8')).* from utf8_inputs;
+-- Test conversions from UTF-8
+select description, inbytes, (test_conv(inbytes, 'utf8', 'euc_jis_2004')).* from utf8_inputs;
+select description, inbytes, (test_conv(inbytes, 'utf8', 'latin1')).* from utf8_inputs;
+select description, inbytes, (test_conv(inbytes, 'utf8', 'latin2')).* from utf8_inputs;
+select description, inbytes, (test_conv(inbytes, 'utf8', 'latin5')).* from utf8_inputs;
+select description, inbytes, (test_conv(inbytes, 'utf8', 'koi8r')).* from utf8_inputs;
+select description, inbytes, (test_conv(inbytes, 'utf8', 'gb18030')).* from utf8_inputs;
+
+--
+-- EUC_JIS_2004
+--
+CREATE TABLE euc_jis_2004_inputs (inbytes bytea, description text);
+insert into euc_jis_2004_inputs values
+ ('\x666f6f', 'valid, pure ASCII'),
+ ('\x666f6fbedd', 'valid'),
+ ('\xa5f7', 'valid, translates to two UTF-8 chars '),
+ ('\xbeddbe', 'incomplete char '),
+ ('\x666f6f00bedd', 'invalid, NUL byte'),
+ ('\x666f6fbe00dd', 'invalid, NUL byte'),
+ ('\x666f6fbedd00', 'invalid, NUL byte'),
+ ('\xbe04', 'invalid byte sequence');
+
+-- Test EUC_JIS_2004 verification
+select description, inbytes, (test_conv(inbytes, 'euc_jis_2004', 'euc_jis_2004')).* from euc_jis_2004_inputs;
+-- Test conversions from EUC_JIS_2004
+select description, inbytes, (test_conv(inbytes, 'euc_jis_2004', 'utf8')).* from euc_jis_2004_inputs;
+
+--
+-- SHIFT-JIS-2004
+--
+CREATE TABLE shiftjis2004_inputs (inbytes bytea, description text);
+insert into shiftjis2004_inputs values
+ ('\x666f6f', 'valid, pure ASCII'),
+ ('\x666f6f8fdb', 'valid'),
+ ('\x666f6f81c0', 'valid, no translation to UTF-8'),
+ ('\x666f6f82f5', 'valid, translates to two UTF-8 chars '),
+ ('\x666f6f8fdb8f', 'incomplete char '),
+ ('\x666f6f820a', 'incomplete char, followed by newline '),
+ ('\x666f6f008fdb', 'invalid, NUL byte'),
+ ('\x666f6f8f00db', 'invalid, NUL byte'),
+ ('\x666f6f8fdb00', 'invalid, NUL byte');
+
+-- Test SHIFT-JIS-2004 verification
+select description, inbytes, (test_conv(inbytes, 'shiftjis2004', 'shiftjis2004')).* from shiftjis2004_inputs;
+-- Test conversions from SHIFT-JIS-2004
+select description, inbytes, (test_conv(inbytes, 'shiftjis2004', 'utf8')).* from shiftjis2004_inputs;
+select description, inbytes, (test_conv(inbytes, 'shiftjis2004', 'euc_jis_2004')).* from shiftjis2004_inputs;
+
+--
+-- GB18030
+--
+CREATE TABLE gb18030_inputs (inbytes bytea, description text);
+insert into gb18030_inputs values
+ ('\x666f6f', 'valid, pure ASCII'),
+ ('\x666f6fcff3', 'valid'),
+ ('\x666f6f8431a530', 'valid, no translation to UTF-8'),
+ ('\x666f6f84309c38', 'valid, translates to UTF-8 by mapping function'),
+ ('\x666f6f84309c', 'incomplete char '),
+ ('\x666f6f84309c0a', 'incomplete char, followed by newline '),
+ ('\x666f6f84309c3800', 'invalid, NUL byte'),
+ ('\x666f6f84309c0038', 'invalid, NUL byte');
+
+-- Test GB18030 verification
+select description, inbytes, (test_conv(inbytes, 'gb18030', 'gb18030')).* from gb18030_inputs;
+-- Test conversions from GB18030
+select description, inbytes, (test_conv(inbytes, 'gb18030', 'utf8')).* from gb18030_inputs;
+
+
+--
+-- ISO-8859-5
+--
+CREATE TABLE iso8859_5_inputs (inbytes bytea, description text);
+insert into iso8859_5_inputs values
+ ('\x666f6f', 'valid, pure ASCII'),
+ ('\xe4dede', 'valid'),
+ ('\x00', 'invalid, NUL byte'),
+ ('\xe400dede', 'invalid, NUL byte'),
+ ('\xe4dede00', 'invalid, NUL byte');
+
+-- Test ISO-8859-5 verification
+select description, inbytes, (test_conv(inbytes, 'iso8859-5', 'iso8859-5')).* from iso8859_5_inputs;
+-- Test conversions from ISO-8859-5
+select description, inbytes, (test_conv(inbytes, 'iso8859-5', 'utf8')).* from iso8859_5_inputs;
+select description, inbytes, (test_conv(inbytes, 'iso8859-5', 'koi8r')).* from iso8859_5_inputs;
+select description, inbytes, (test_conv(inbytes, 'iso8859_5', 'mule_internal')).* from iso8859_5_inputs;
+
+--
+-- Big5
+--
+CREATE TABLE big5_inputs (inbytes bytea, description text);
+insert into big5_inputs values
+ ('\x666f6f', 'valid, pure ASCII'),
+ ('\x666f6fb648', 'valid'),
+ ('\x666f6fa27f', 'valid, no translation to UTF-8'),
+ ('\x666f6fb60048', 'invalid, NUL byte'),
+ ('\x666f6fb64800', 'invalid, NUL byte');
+
+-- Test Big5 verification
+select description, inbytes, (test_conv(inbytes, 'big5', 'big5')).* from big5_inputs;
+-- Test conversions from Big5
+select description, inbytes, (test_conv(inbytes, 'big5', 'utf8')).* from big5_inputs;
+select description, inbytes, (test_conv(inbytes, 'big5', 'mule_internal')).* from big5_inputs;
+
+--
+-- MULE_INTERNAL
+--
+CREATE TABLE mic_inputs (inbytes bytea, description text);
+insert into mic_inputs values
+ ('\x666f6f', 'valid, pure ASCII'),
+ ('\x8bc68bcf8bcf', 'valid (in KOI8R)'),
+ ('\x8bc68bcf8b', 'invalid,incomplete char'),
+ ('\x92bedd', 'valid (in SHIFT_JIS)'),
+ ('\x92be', 'invalid, incomplete char)'),
+ ('\x666f6f95a3c1', 'valid (in Big5)'),
+ ('\x666f6f95a3', 'invalid, incomplete char'),
+ ('\x9200bedd', 'invalid, NUL byte'),
+ ('\x92bedd00', 'invalid, NUL byte'),
+ ('\x8b00c68bcf8bcf', 'invalid, NUL byte');
+
+-- Test MULE_INTERNAL verification
+select description, inbytes, (test_conv(inbytes, 'mule_internal', 'mule_internal')).* from mic_inputs;
+-- Test conversions from MULE_INTERNAL
+select description, inbytes, (test_conv(inbytes, 'mule_internal', 'koi8r')).* from mic_inputs;
+select description, inbytes, (test_conv(inbytes, 'mule_internal', 'iso8859-5')).* from mic_inputs;
+select description, inbytes, (test_conv(inbytes, 'mule_internal', 'sjis')).* from mic_inputs;
+select description, inbytes, (test_conv(inbytes, 'mule_internal', 'big5')).* from mic_inputs;
+select description, inbytes, (test_conv(inbytes, 'mule_internal', 'euc_jp')).* from mic_inputs;