From 4dc7c1aa46c4980833dd0f20bdc0650d9bd669c0 Mon Sep 17 00:00:00 2001 From: unknown Date: Mon, 12 Feb 2007 14:31:44 +0100 Subject: [PATCH] Bug#24660: "enum" field type definition problem ENUMs weren't allowed to have character 0xff, a perfectly good character in some locales. This was circumvented by mapping 0xff in ENUMs to ',', thereby prevent actual commas from being used. Now if 0xff makes an appearance, we find a character not used in the enum and use that as a separator. If no such character exists, we throw an error. Any solution would have broken some sort of existing behaviour. This solution should serve both fractions (those with 0xff and those with ',' in their enums), but WILL REQUIRE A DUMP/RESTORE CYCLE FROM THOSE WITH 0xff IN THEIR ENUMS. :-/ That is, mysqldump with their current server, and restore when upgrading to one with this patch. mysql-test/r/type_enum.result: Bug#24660: "enum" field type definition problem Show that enums can now contain NAMES_SEP_CHAR (0xff, which is a perfectly respectable char in some locales), or ',', or both. mysql-test/t/type_enum.test: Bug#24660: "enum" field type definition problem Show that enums can now contain NAMES_SEP_CHAR (0xff, which is a perfectly respectable char in some locales), or ',', or both. sql/table.cc: Bug#24660: "enum" field type definition problem Revert fix for Bug#20922. sql/unireg.cc: Bug#24660: "enum" field type definition problem Use a field-separator for ENUM-values that is not part of those values. If impossible, throw error. --- mysql-test/r/type_enum.result | 25 ++++++++++++++ mysql-test/t/type_enum.test | 22 ++++++++++++- sql/table.cc | 11 ------- sql/unireg.cc | 61 +++++++++++++++++++++++------------ 4 files changed, 86 insertions(+), 33 deletions(-) diff --git a/mysql-test/r/type_enum.result b/mysql-test/r/type_enum.result index 0fe3f674fba..b5ec72ffe5a 100644 --- a/mysql-test/r/type_enum.result +++ b/mysql-test/r/type_enum.result @@ -1754,3 +1754,28 @@ t1 CREATE TABLE `t1` ( `f2` enum('') default NULL ) ENGINE=MyISAM DEFAULT CHARSET=latin1 drop table t1; +create table t1(russian enum('E','F','EF','FE') NOT NULL DEFAULT'E'); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `russian` enum('E','F','EF','FE') NOT NULL default 'E' +) ENGINE=MyISAM DEFAULT CHARSET=latin1 +drop table t1; +create table t1(denormal enum('E','F','E,F','F,E') NOT NULL DEFAULT'E'); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `denormal` enum('E','F','E,F','F,E') NOT NULL default 'E' +) ENGINE=MyISAM DEFAULT CHARSET=latin1 +drop table t1; +create table t1(russian_deviant enum('E','F','EF','F,E') NOT NULL DEFAULT'E'); +show create table t1; +Table Create Table +t1 CREATE TABLE `t1` ( + `russian_deviant` enum('E','F','EF','F,E') NOT NULL default 'E' +) ENGINE=MyISAM DEFAULT CHARSET=latin1 +drop table t1; +create table t1(exhausting_charset enum('ABCDEFGHIJKLMNOPQRSTUVWXYZ',' +  !"','#$%&\'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~','xx\','yy\','zz')); +ERROR 42000: Field separator argument is not what is expected; check the manual +End of 4.1 tests diff --git a/mysql-test/t/type_enum.test b/mysql-test/t/type_enum.test index 68f5664c36d..4b3429d9ea0 100644 --- a/mysql-test/t/type_enum.test +++ b/mysql-test/t/type_enum.test @@ -136,4 +136,24 @@ alter table t1 add f2 enum(0xFFFF); show create table t1; drop table t1; -# End of 4.1 tests +# +# Bug#24660 "enum" field type definition problem +# +create table t1(russian enum('E','F','EF','FE') NOT NULL DEFAULT'E'); +show create table t1; +drop table t1; + +create table t1(denormal enum('E','F','E,F','F,E') NOT NULL DEFAULT'E'); +show create table t1; +drop table t1; + +create table t1(russian_deviant enum('E','F','EF','F,E') NOT NULL DEFAULT'E'); +show create table t1; +drop table t1; + +# ER_WRONG_FIELD_TERMINATORS +--error 1083 +create table t1(exhausting_charset enum('ABCDEFGHIJKLMNOPQRSTUVWXYZ',' +  !"','#$%&\'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~','xx\','yy\','zz')); + +--echo End of 4.1 tests diff --git a/sql/table.cc b/sql/table.cc index aff1e6d11f6..9ff4ec29914 100644 --- a/sql/table.cc +++ b/sql/table.cc @@ -391,17 +391,6 @@ int openfrm(const char *name, const char *alias, uint db_stat, uint prgflag, { char *val= (char*) interval->type_names[count]; interval->type_lengths[count]= strlen(val); - /* - Replace all ',' symbols with NAMES_SEP_CHAR. - See the comment in unireg.cc, pack_fields() function - for details. - */ - for (uint cnt= 0 ; cnt < interval->type_lengths[count] ; cnt++) - { - char c= val[cnt]; - if (c == ',') - val[cnt]= NAMES_SEP_CHAR; - } } interval->type_lengths[count]= 0; } diff --git a/sql/unireg.cc b/sql/unireg.cc index 4e1a68ae90f..e5ee0222f20 100644 --- a/sql/unireg.cc +++ b/sql/unireg.cc @@ -657,29 +657,48 @@ static bool pack_fields(File file, List &create_fields, { if (field->interval_id > int_count) { - int_count=field->interval_id; - tmp.append(NAMES_SEP_CHAR); - for (const char **pos=field->interval->type_names ; *pos ; pos++) - { - char *val= (char*) *pos; - uint str_len= strlen(val); - /* - Note, hack: in old frm NAMES_SEP_CHAR is used to separate - names in the interval (ENUM/SET). To allow names to contain - NAMES_SEP_CHAR, we replace it with a comma before writing frm. - Backward conversion is done during frm file opening, - See table.cc, openfrm() function - */ - for (uint cnt= 0 ; cnt < str_len ; cnt++) + unsigned char sep= 0; + unsigned char occ[256]; + uint i; + unsigned char *val= NULL; + + bzero(occ, sizeof(occ)); + + for (i=0; (val= (unsigned char*) field->interval->type_names[i]); i++) + for (uint j = 0; j < field->interval->type_lengths[i]; j++) + occ[(unsigned int) (val[j])]= 1; + + if (!occ[(unsigned char)NAMES_SEP_CHAR]) + sep= (unsigned char) NAMES_SEP_CHAR; + else if (!occ[(unsigned int)',']) + sep= ','; + else + { + for (uint i=1; i<256; i++) { - char c= val[cnt]; - if (c == NAMES_SEP_CHAR) - val[cnt]= ','; + if(!occ[i]) + { + sep= i; + break; + } } - tmp.append(*pos); - tmp.append(NAMES_SEP_CHAR); - } - tmp.append('\0'); // End of intervall + + if(!sep) /* disaster, enum uses all characters, none left as separator */ + { + my_message(ER_WRONG_FIELD_TERMINATORS,ER(ER_WRONG_FIELD_TERMINATORS), + MYF(0)); + DBUG_RETURN(1); + } + } + + int_count= field->interval_id; + tmp.append(sep); + for (const char **pos=field->interval->type_names ; *pos ; pos++) + { + tmp.append(*pos); + tmp.append(sep); + } + tmp.append('\0'); // End of intervall } } if (my_write(file,(byte*) tmp.ptr(),tmp.length(),MYF_RW))