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MySQL 5.1: mysql/src/5.1-dbg/sql/sql_string.h File Reference

mysql/src/5.1-dbg/sql/sql_string.h File Reference

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Classes

class  String

Defines

#define NOT_FIXED_DEC   31

Functions

int sortcmp (const String *a, const String *b, CHARSET_INFO *cs)
String * copy_if_not_alloced (String *a, String *b, uint32 arg_length)
uint32 copy_and_convert (char *to, uint32 to_length, CHARSET_INFO *to_cs, const char *from, uint32 from_length, CHARSET_INFO *from_cs, uint *errors)

Define Documentation

#define NOT_FIXED_DEC   31

Definition at line 24 of file sql_string.h.

Function Documentation

uint32 copy_and_convert ( char *  to,
uint32  to_length,
CHARSET_INFO *  to_cs,
const char *  from,
uint32  from_length,
CHARSET_INFO *  from_cs,
uint *  errors 
)

Definition at line 796 of file sql_string.cc.

References charset_info_st::cset, e, int(), my_charset_handler_st::mb_wc, MY_CS_ILSEQ, MY_CS_ILUNI, MY_CS_TOOSMALL, my_wc_t, and my_charset_handler_st::wc_mb.

00799 {
00800   int         cnvres;
00801   my_wc_t     wc;
00802   const uchar *from_end= (const uchar*) from+from_length;
00803   char *to_start= to;
00804   uchar *to_end= (uchar*) to+to_length;
00805   int (*mb_wc)(struct charset_info_st *, my_wc_t *, const uchar *,
00806                const uchar *) = from_cs->cset->mb_wc;
00807   int (*wc_mb)(struct charset_info_st *, my_wc_t, uchar *s, uchar *e)=
00808     to_cs->cset->wc_mb;
00809   uint error_count= 0;
00810 
00811   while (1)
00812   {
00813     if ((cnvres= (*mb_wc)(from_cs, &wc, (uchar*) from,
00814                                       from_end)) > 0)
00815       from+= cnvres;
00816     else if (cnvres == MY_CS_ILSEQ)
00817     {
00818       error_count++;
00819       from++;
00820       wc= '?';
00821     }
00822     else
00823       break;                                    // Impossible char.
00824 
00825 outp:
00826     if ((cnvres= (*wc_mb)(to_cs, wc, (uchar*) to, to_end)) > 0)
00827       to+= cnvres;
00828     else if (cnvres == MY_CS_ILUNI && wc != '?')
00829     {
00830       error_count++;
00831       wc= '?';
00832       goto outp;
00833     }
00834     else
00835       break;
00836   }
00837   *errors= error_count;
00838   return (uint32) (to - to_start);
00839 }

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String* copy_if_not_alloced ( String *  a,
String *  b,
uint32  arg_length 
)

Definition at line 754 of file sql_string.cc.

References from, memcpy, min, and to.

00755 {
00756   if (from->Alloced_length >= from_length)
00757     return from;
00758   if (from->alloced || !to || from == to)
00759   {
00760     (void) from->realloc(from_length);
00761     return from;
00762   }
00763   if (to->realloc(from_length))
00764     return from;                                // Actually an error
00765   if ((to->str_length=min(from->str_length,from_length)))
00766     memcpy(to->Ptr,from->Ptr,to->str_length);
00767   to->str_charset=from->str_charset;
00768   return to;
00769 }

int sortcmp ( const String *  a,
const String *  b,
CHARSET_INFO *  cs 
)

Definition at line 720 of file sql_string.cc.

References charset_info_st::coll, String::length(), String::ptr(), and my_collation_handler_st::strnncollsp.

00721 {
00722  return cs->coll->strnncollsp(cs,
00723                               (unsigned char *) s->ptr(),s->length(),
00724                               (unsigned char *) t->ptr(),t->length(), 0);
00725 }

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Generated on Sat Sep 9 01:01:53 2006 for MySQL 5.1 by  doxygen 1.4.7