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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 18:07:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 18:07:14 +0000 |
commit | a175314c3e5827eb193872241446f2f8f5c9d33c (patch) | |
tree | cd3d60ca99ae00829c52a6ca79150a5b6e62528b /sql/lex_string.h | |
parent | Initial commit. (diff) | |
download | mariadb-10.5-upstream/1%10.5.12.tar.xz mariadb-10.5-upstream/1%10.5.12.zip |
Adding upstream version 1:10.5.12.upstream/1%10.5.12upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | sql/lex_string.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/sql/lex_string.h b/sql/lex_string.h new file mode 100644 index 00000000..e7a73234 --- /dev/null +++ b/sql/lex_string.h @@ -0,0 +1,111 @@ +/* + Copyright (c) 2018, MariaDB Corporation. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; version 2 of the License. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ + + +#ifndef LEX_STRING_INCLUDED +#define LEX_STRING_INCLUDED + + +typedef struct st_mysql_const_lex_string LEX_CSTRING; + + +class Lex_cstring : public LEX_CSTRING +{ + public: + Lex_cstring() + { + str= NULL; + length= 0; + } + Lex_cstring(const LEX_CSTRING &str) + { + LEX_CSTRING::operator=(str); + } + Lex_cstring(const char *_str, size_t _len) + { + str= _str; + length= _len; + } + Lex_cstring(const char *start, const char *end) + { + DBUG_ASSERT(start <= end); + str= start; + length= end - start; + } + void set(const char *_str, size_t _len) + { + str= _str; + length= _len; + } +}; + + +class Lex_cstring_strlen: public Lex_cstring +{ +public: + Lex_cstring_strlen(const char *from) + :Lex_cstring(from, from ? strlen(from) : 0) + { } +}; + + +/* Functions to compare if two lex strings are equal */ + +static inline bool lex_string_cmp(CHARSET_INFO *charset, const LEX_CSTRING *a, + const LEX_CSTRING *b) +{ + return my_strcasecmp(charset, a->str, b->str); +} + +/* + Compare to LEX_CSTRING's and return 0 if equal +*/ + +static inline bool cmp(const LEX_CSTRING *a, const LEX_CSTRING *b) +{ + return a->length != b->length || + (a->length && memcmp(a->str, b->str, a->length)); +} +static inline bool cmp(const LEX_CSTRING a, const LEX_CSTRING b) +{ + return a.length != b.length || (a.length && memcmp(a.str, b.str, a.length)); +} + +/* + Compare if two LEX_CSTRING are equal. Assumption is that + character set is ASCII (like for plugin names) +*/ + +static inline bool lex_string_eq(const LEX_CSTRING *a, const LEX_CSTRING *b) +{ + if (a->length != b->length) + return 0; /* Different */ + return strcasecmp(a->str, b->str) == 0; +} + +/* + To be used when calling lex_string_eq with STRING_WITH_LEN() as second + argument +*/ + +static inline bool lex_string_eq(const LEX_CSTRING *a, const char *b, size_t b_length) +{ + if (a->length != b_length) + return 0; /* Different */ + return strcasecmp(a->str, b) == 0; +} + +#endif /* LEX_STRING_INCLUDED */ |