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Commit 72f36713 authored by bar@bar.mysql.r18.ru's avatar bar@bar.mysql.r18.ru
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Copy from /sql directory

parent 41554da7
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Showing with 76 additions and 268 deletions
client/sql_string.cc
View file @ 72f36713
......@@ -93,18 +93,36 @@ bool String::realloc(uint32 alloc_length)
bool String::set(longlong num, CHARSET_INFO *cs)
{
if (alloc(21))
uint l=20*cs->mbmaxlen+1;
if (alloc(l))
return TRUE;
str_length=(uint32) (longlong10_to_str(num,Ptr,-10)-Ptr);
if (cs->snprintf == my_snprintf_8bit)
{
str_length=(uint32) (longlong10_to_str(num,Ptr,-10)-Ptr);
}
else
{
str_length=cs->snprintf(cs,Ptr,l,"%d",num);
}
str_charset=cs;
return FALSE;
}
bool String::set(ulonglong num, CHARSET_INFO *cs)
{
if (alloc(21))
uint l=20*cs->mbmaxlen+1;
if (alloc(l))
return TRUE;
str_length=(uint32) (longlong10_to_str(num,Ptr,10)-Ptr);
if (cs->snprintf == my_snprintf_8bit)
{
str_length=(uint32) (longlong10_to_str(num,Ptr,10)-Ptr);
}
else
{
str_length=cs->snprintf(cs,Ptr,l,"%d",num);
}
str_charset=cs;
return FALSE;
}
......@@ -117,14 +135,14 @@ bool String::set(double num,uint decimals, CHARSET_INFO *cs)
if (decimals >= NOT_FIXED_DEC)
{
sprintf(buff,"%.14g",num); // Enough for a DATETIME
return copy(buff, (uint32) strlen(buff), my_charset_latin1);
return copy(buff, (uint32) strlen(buff), my_charset_latin1, cs);
}
#ifdef HAVE_FCONVERT
int decpt,sign;
char *pos,*to;
VOID(fconvert(num,(int) decimals,&decpt,&sign,buff+1));
if (!my_isdigit(system_charset_info, buff[1]))
if (!my_isdigit(my_charset_latin1, buff[1]))
{ // Nan or Inf
pos=buff+1;
if (sign)
......@@ -132,7 +150,7 @@ bool String::set(double num,uint decimals, CHARSET_INFO *cs)
buff[0]='-';
pos=buff;
}
return copy(pos,(uint32) strlen(pos));
return copy(pos,(uint32) strlen(pos), my_charset_latin1, cs);
}
if (alloc((uint32) ((uint32) decpt+3+decimals)))
return TRUE;
......@@ -182,7 +200,7 @@ bool String::set(double num,uint decimals, CHARSET_INFO *cs)
#else
sprintf(buff,"%.*f",(int) decimals,num);
#endif
return copy(buff,(uint32) strlen(buff), my_charset_latin1);
return copy(buff,(uint32) strlen(buff), my_charset_latin1, cs);
#endif
}
......@@ -219,6 +237,55 @@ bool String::copy(const char *str,uint32 arg_length, CHARSET_INFO *cs)
return FALSE;
}
/* Copy with charset convertion */
bool String::copy(const char *str,uint32 arg_length, CHARSET_INFO *from, CHARSET_INFO *to)
{
uint32 new_length=to->mbmaxlen*arg_length;
int cnvres;
my_wc_t wc;
const uchar *s=(const uchar *)str;
const uchar *se=s+arg_length;
uchar *d, *de;
if (alloc(new_length))
return TRUE;
d=(uchar *)Ptr;
de=d+new_length;
for (str_length=new_length ; s < se && d < de ; )
{
if ((cnvres=from->mb_wc(from,&wc,s,se)) > 0 )
{
s+=cnvres;
}
else if (cnvres==MY_CS_ILSEQ)
{
s++;
wc='?';
}
else
break;
outp:
if((cnvres=to->wc_mb(to,wc,d,de)) >0 )
{
d+=cnvres;
}
else if (cnvres==MY_CS_ILUNI && wc!='?')
{
wc='?';
goto outp;
}
else
break;
}
Ptr[new_length]=0;
length((uint32) (d-(uchar *)Ptr));
str_charset=to;
return FALSE;
}
/* This is used by mysql.cc */
bool String::fill(uint32 max_length,char fill_char)
......@@ -604,261 +671,5 @@ String *copy_if_not_alloced(String *to,String *from,uint32 from_length)
return to;
}
/* Make it easier to handle different charactersets */
#ifdef USE_MB
#define INC_PTR(cs,A,B) A+=((use_mb_flag && \
my_ismbchar(cs,A,B)) ? my_ismbchar(cs,A,B) : 1)
#else
#define INC_PTR(cs,A,B) A++
#endif
/*
** Compare string against string with wildcard
** 0 if matched
** -1 if not matched with wildcard
** 1 if matched with wildcard
*/
#ifdef LIKE_CMP_TOUPPER
#define likeconv(s,A) (uchar) my_toupper(s,A)
#else
#define likeconv(s,A) (uchar) (s)->sort_order[(uchar) (A)]
#endif
int wild_case_compare(CHARSET_INFO *cs, const char *str,const char *str_end,
const char *wildstr,const char *wildend,
char escape)
{
int result= -1; // Not found, using wildcards
#ifdef USE_MB
bool use_mb_flag=use_mb(cs);
#endif
while (wildstr != wildend)
{
while (*wildstr != wild_many && *wildstr != wild_one)
{
if (*wildstr == escape && wildstr+1 != wildend)
wildstr++;
#ifdef USE_MB
int l;
if (use_mb_flag &&
(l = my_ismbchar(cs, wildstr, wildend)))
{
if (str+l > str_end || memcmp(str, wildstr, l) != 0)
return 1;
str += l;
wildstr += l;
}
else
#endif
if (str == str_end || likeconv(cs,*wildstr++) != likeconv(cs,*str++))
return(1); // No match
if (wildstr == wildend)
return (str != str_end); // Match if both are at end
result=1; // Found an anchor char
}
if (*wildstr == wild_one)
{
do
{
if (str == str_end) // Skip one char if possible
return (result);
INC_PTR(cs,str,str_end);
} while (++wildstr < wildend && *wildstr == wild_one);
if (wildstr == wildend)
break;
}
if (*wildstr == wild_many)
{ // Found wild_many
wildstr++;
/* Remove any '%' and '_' from the wild search string */
for (; wildstr != wildend ; wildstr++)
{
if (*wildstr == wild_many)
continue;
if (*wildstr == wild_one)
{
if (str == str_end)
return (-1);
INC_PTR(cs,str,str_end);
continue;
}
break; // Not a wild character
}
if (wildstr == wildend)
return(0); // Ok if wild_many is last
if (str == str_end)
return -1;
uchar cmp;
if ((cmp= *wildstr) == escape && wildstr+1 != wildend)
cmp= *++wildstr;
#ifdef USE_MB
const char* mb = wildstr;
int mblen;
LINT_INIT(mblen);
if (use_mb_flag)
mblen = my_ismbchar(cs, wildstr, wildend);
#endif
INC_PTR(cs,wildstr,wildend); // This is compared trough cmp
cmp=likeconv(cs,cmp);
do
{
#ifdef USE_MB
if (use_mb_flag)
{
for (;;)
{
if (str >= str_end)
return -1;
if (mblen)
{
if (str+mblen <= str_end && memcmp(str, mb, mblen) == 0)
{
str += mblen;
break;
}
}
else if (!my_ismbchar(cs, str, str_end) &&
likeconv(cs,*str) == cmp)
{
str++;
break;
}
INC_PTR(cs,str, str_end);
}
}
else
{
#endif /* USE_MB */
while (str != str_end && likeconv(cs,*str) != cmp)
str++;
if (str++ == str_end) return (-1);
#ifdef USE_MB
}
#endif
{
int tmp=wild_case_compare(cs,str,str_end,wildstr,wildend,escape);
if (tmp <= 0)
return (tmp);
}
} while (str != str_end && wildstr[0] != wild_many);
return(-1);
}
}
return (str != str_end ? 1 : 0);
}
int wild_case_compare(String &match,String &wild, char escape)
{
DBUG_ENTER("wild_case_compare");
DBUG_PRINT("enter",("match='%s', wild='%s', escape='%c'"
,match.ptr(),wild.ptr(),escape));
DBUG_RETURN(wild_case_compare(match.str_charset,match.ptr(),match.ptr()+match.length(),
wild.ptr(), wild.ptr()+wild.length(),escape));
}
/*
** The following is used when using LIKE on binary strings
*/
int wild_compare(const char *str,const char *str_end,
const char *wildstr,const char *wildend,char escape)
{
DBUG_ENTER("wild_compare");
DBUG_PRINT("enter",("str='%s', str_end='%s', wildstr='%s', wildend='%s', escape='%c'"
,str,str_end,wildstr,wildend,escape));
int result= -1; // Not found, using wildcards
while (wildstr != wildend)
{
while (*wildstr != wild_many && *wildstr != wild_one)
{
if (*wildstr == escape && wildstr+1 != wildend)
wildstr++;
if (str == str_end || *wildstr++ != *str++)
{
DBUG_RETURN(1);
}
if (wildstr == wildend)
{
DBUG_RETURN(str != str_end); // Match if both are at end
}
result=1; // Found an anchor char
}
if (*wildstr == wild_one)
{
do
{
if (str == str_end) // Skip one char if possible
DBUG_RETURN(result);
str++;
} while (*++wildstr == wild_one && wildstr != wildend);
if (wildstr == wildend)
break;
}
if (*wildstr == wild_many)
{ // Found wild_many
wildstr++;
/* Remove any '%' and '_' from the wild search string */
for (; wildstr != wildend ; wildstr++)
{
if (*wildstr == wild_many)
continue;
if (*wildstr == wild_one)
{
if (str == str_end)
{
DBUG_RETURN(-1);
}
str++;
continue;
}
break; // Not a wild character
}
if (wildstr == wildend)
{
DBUG_RETURN(0); // Ok if wild_many is last
}
if (str == str_end)
{
DBUG_RETURN(-1);
}
char cmp;
if ((cmp= *wildstr) == escape && wildstr+1 != wildend)
cmp= *++wildstr;
wildstr++; // This is compared trough cmp
do
{
while (str != str_end && *str != cmp)
str++;
if (str++ == str_end)
{
DBUG_RETURN(-1);
}
{
int tmp=wild_compare(str,str_end,wildstr,wildend,escape);
if (tmp <= 0)
{
DBUG_RETURN(tmp);
}
}
} while (str != str_end && wildstr[0] != wild_many);
DBUG_RETURN(-1);
}
}
DBUG_RETURN(str != str_end ? 1 : 0);
}
int wild_compare(String &match,String &wild, char escape)
{
DBUG_ENTER("wild_compare");
DBUG_PRINT("enter",("match='%s', wild='%s', escape='%c'"
,match.ptr(),wild.ptr(),escape));
DBUG_RETURN(wild_compare(match.ptr(),match.ptr()+match.length(),
wild.ptr(), wild.ptr()+wild.length(),escape));
}
client/sql_string.h
View file @ 72f36713
......@@ -28,8 +28,6 @@ class String;
int sortcmp(const String *a,const String *b);
int stringcmp(const String *a,const String *b);
String *copy_if_not_alloced(String *a,String *b,uint32 arg_length);
int wild_case_compare(String &match,String &wild,char escape);
int wild_compare(String &match,String &wild,char escape);
class String
{
......@@ -179,6 +177,7 @@ class String
bool copy(); // Alloc string if not alloced
bool copy(const String &s); // Allocate new string
bool copy(const char *s,uint32 arg_length, CHARSET_INFO *cs); // Allocate new string
bool copy(const char*s,uint32 arg_length, CHARSET_INFO *csfrom, CHARSET_INFO *csto);
bool append(const String &s);
bool append(const char *s,uint32 arg_length=0);
bool append(IO_CACHE* file, uint32 arg_length);
......@@ -207,8 +206,6 @@ class String
friend int sortcmp(const String *a,const String *b);
friend int stringcmp(const String *a,const String *b);
friend String *copy_if_not_alloced(String *a,String *b,uint32 arg_length);
friend int wild_case_compare(String &match,String &wild,char escape);
friend int wild_compare(String &match,String &wild,char escape);
uint32 numchars();
int charpos(int i,uint32 offset=0);
......
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