diff options
Diffstat (limited to 'sql/sql_class.h')
| -rw-r--r-- | sql/sql_class.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/sql/sql_class.h b/sql/sql_class.h index 0049b971f48..47426693d3b 100644 --- a/sql/sql_class.h +++ b/sql/sql_class.h @@ -3106,9 +3106,49 @@ public: return make_lex_string(lex_str, str, length); } + // Allocate LEX_STRING for character set conversion + bool alloc_lex_string(LEX_STRING *dst, uint length) + { + if ((dst->str= (char*) alloc(length))) + return false; + dst->length= 0; // Safety + return true; // EOM + } bool convert_string(LEX_STRING *to, CHARSET_INFO *to_cs, const char *from, uint from_length, CHARSET_INFO *from_cs); + /* + Convert a strings between character sets. + Uses my_convert_fix(), which uses an mb_wc .. mc_mb loop internally. + dstcs and srccs cannot be &my_charset_bin. + */ + bool convert_fix(CHARSET_INFO *dstcs, LEX_STRING *dst, + CHARSET_INFO *srccs, const char *src, uint src_length, + String_copier *status); + + /* + Same as above, but additionally sends ER_INVALID_CHARACTER_STRING + in case of bad byte sequences or Unicode conversion problems. + */ + bool convert_with_error(CHARSET_INFO *dstcs, LEX_STRING *dst, + CHARSET_INFO *srccs, + const char *src, uint src_length); + + /* + If either "dstcs" or "srccs" is &my_charset_bin, + then performs native copying using cs->cset->copy_fix(). + Otherwise, performs Unicode conversion using convert_fix(). + */ + bool copy_fix(CHARSET_INFO *dstcs, LEX_STRING *dst, + CHARSET_INFO *srccs, const char *src, uint src_length, + String_copier *status); + + /* + Same as above, but additionally sends ER_INVALID_CHARACTER_STRING + in case of bad byte sequences or Unicode conversion problems. + */ + bool copy_with_error(CHARSET_INFO *dstcs, LEX_STRING *dst, + CHARSET_INFO *srccs, const char *src, uint src_length); bool convert_string(String *s, CHARSET_INFO *from_cs, CHARSET_INFO *to_cs); |