diff options
Diffstat (limited to 'ext/mysql/libmysql/mf_wcomp.c')
| -rw-r--r-- | ext/mysql/libmysql/mf_wcomp.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/ext/mysql/libmysql/mf_wcomp.c b/ext/mysql/libmysql/mf_wcomp.c new file mode 100644 index 0000000000..8c9d43a01c --- /dev/null +++ b/ext/mysql/libmysql/mf_wcomp.c @@ -0,0 +1,54 @@ +/* Copyright Abandoned 1996 TCX DataKonsult AB & Monty Program KB & Detron HB + This file is public domain and comes with NO WARRANTY of any kind */ + +/* Funktions for comparing with wild-cards */ + +#include "mysys_priv.h" + + /* Test if a string is "comparable" to a wild-card string */ + /* returns 0 if the strings are "comparable" */ + +char wild_many='*'; +char wild_one='?'; +char wild_prefix=0; + +int wild_compare(register const char *str, register const char *wildstr) +{ + reg3 int flag; + DBUG_ENTER("wild_compare"); + + while (*wildstr) + { + while (*wildstr && *wildstr != wild_many && *wildstr != wild_one) + { + if (*wildstr == wild_prefix && wildstr[1]) + wildstr++; + if (*wildstr++ != *str++) DBUG_RETURN(1); + } + if (! *wildstr ) DBUG_RETURN (*str != 0); + if (*wildstr++ == wild_one) + { + if (! *str++) DBUG_RETURN (1); /* One char; skipp */ + } + else + { /* Found '*' */ + if (!*wildstr) DBUG_RETURN(0); /* '*' as last char: OK */ + flag=(*wildstr != wild_many && *wildstr != wild_one); + do + { + if (flag) + { + char cmp; + if ((cmp= *wildstr) == wild_prefix && wildstr[1]) + cmp=wildstr[1]; + while (*str && *str != cmp) + str++; + if (!*str) DBUG_RETURN (1); + } + if (wild_compare(str,wildstr) == 0) DBUG_RETURN (0); + } while (*str++ && wildstr[0] != wild_many); + DBUG_RETURN(1); + } + } + DBUG_RETURN (*str != '\0'); +} /* wild_compare */ |