Fixes for fault about String::copy()

client/mysql.cc

@@ -952,7 +952,7 @@ static bool add_line(String &buffer,char *line,char *in_string)
       }
       if ((com=find_command(NullS,(char) inchar)))
       {
-	const String tmp(line,(uint) (out-line));
+	const String tmp(line,(uint) (out-line), system_charset_info);
 	buffer.append(tmp);
 	if ((*com->func)(&buffer,pos-1) > 0)
 	  return 1;				// Quit
@@ -1709,7 +1709,7 @@ print_table_data(MYSQL_RES *result)
     print_field_types(result);
     mysql_field_seek(result,0);
   }
-  separator.copy("+",1);
+  separator.copy("+",1,system_charset_info);
   while ((field = mysql_fetch_field(result)))
   {
     uint length= column_names ? (uint) strlen(field->name) : 0;

client/sql_string.cc

@@ -40,19 +40,16 @@ extern void sql_element_free(void *ptr);
 bool String::real_alloc(uint32 arg_length)
 {
   arg_length=ALIGN_SIZE(arg_length+1);
+  str_length=0;
   if (Alloced_length < arg_length)
   {
     free();
     if (!(Ptr=(char*) my_malloc(arg_length,MYF(MY_WME))))
-    {
-      str_length=0;
       return TRUE;
-    }
     Alloced_length=arg_length;
     alloced=1;
   }
   Ptr[0]=0;
-  str_length=0;
   return FALSE;
 }
 
@@ -94,36 +91,40 @@ bool String::realloc(uint32 alloc_length)
   return FALSE;
 }
 
-bool String::set(longlong num)
+bool String::set(longlong num, CHARSET_INFO *cs)
 {
   if (alloc(21))
     return TRUE;
   str_length=(uint32) (longlong10_to_str(num,Ptr,-10)-Ptr);
+  str_charset=cs;
   return FALSE;
 }
 
-bool String::set(ulonglong num)
+bool String::set(ulonglong num, CHARSET_INFO *cs)
 {
   if (alloc(21))
     return TRUE;
   str_length=(uint32) (longlong10_to_str(num,Ptr,10)-Ptr);
+  str_charset=cs;
   return FALSE;
 }
 
-bool String::set(double num,uint decimals)
+bool String::set(double num,uint decimals, CHARSET_INFO *cs)
 {
   char buff[331];
+
+  str_charset=cs;
   if (decimals >= NOT_FIXED_DEC)
   {
     sprintf(buff,"%.14g",num);			// Enough for a DATETIME
-    return copy(buff, (uint32) strlen(buff));
+    return copy(buff, (uint32) strlen(buff), my_charset_latin1);
   }
 #ifdef HAVE_FCONVERT
   int decpt,sign;
   char *pos,*to;
 
   VOID(fconvert(num,(int) decimals,&decpt,&sign,buff+1));
-  if (!isdigit(buff[1]))
+  if (!my_isdigit(system_charset_info, buff[1]))
   {						// Nan or Inf
     pos=buff+1;
     if (sign)
@@ -181,7 +182,7 @@ end:
 #else
   sprintf(buff,"%.*f",(int) decimals,num);
 #endif
-  return copy(buff,(uint32) strlen(buff));
+  return copy(buff,(uint32) strlen(buff), my_charset_latin1);
 #endif
 }
 
@@ -203,16 +204,18 @@ bool String::copy(const String &str)
   str_length=str.str_length;
   bmove(Ptr,str.Ptr,str_length);		// May be overlapping
   Ptr[str_length]=0;
+  str_charset=str.str_charset;
   return FALSE;
 }
 
-bool String::copy(const char *str,uint32 arg_length)
+bool String::copy(const char *str,uint32 arg_length, CHARSET_INFO *cs)
 {
   if (alloc(arg_length))
     return TRUE;
   if ((str_length=arg_length))
     memcpy(Ptr,str,arg_length);
   Ptr[arg_length]=0;
+  str_charset=cs;
   return FALSE;
 }
 
@@ -489,7 +492,7 @@ void String::qs_append(double d)
 void String::qs_append(double *d)
 {
   double ld;
-  float8get(ld, d);
+  float8get(ld, (char*) d);
   qs_append(ld);
 }
 
@@ -523,12 +526,23 @@ int sortcmp(const String *x,const String *y)
 #endif /* USE_STRCOLL */
     x_len-=len;					// For easy end space test
     y_len-=len;
-    while (len--)
+    if (x->str_charset->sort_order)
     {
-      if (x->str_charset->sort_order[(uchar) *s++] != 
+      while (len--)
+      {
+        if (x->str_charset->sort_order[(uchar) *s++] != 
           x->str_charset->sort_order[(uchar) *t++])
-        return ((int) x->str_charset->sort_order[(uchar) s[-1]] -
+            return ((int) x->str_charset->sort_order[(uchar) s[-1]] -
-                (int) x->str_charset->sort_order[(uchar) t[-1]]);
+                  (int) x->str_charset->sort_order[(uchar) t[-1]]);
+      }
+    }
+    else
+    {
+      while (len--)
+      {
+        if (*s++ != *t++)
+            return ((int) s[-1] - (int) t[-1]);
+      }
     }
 #ifndef CMP_ENDSPACE
     /* Don't compare end space in strings */
@@ -586,6 +600,7 @@ String *copy_if_not_alloced(String *to,String *from,uint32 from_length)
     return from;				// Actually an error
   if ((to->str_length=min(from->str_length,from_length)))
     memcpy(to->Ptr,from->Ptr,to->str_length);
+  to->str_charset=from->str_charset;
   return to;
 }
 
@@ -658,7 +673,7 @@ int wild_case_compare(CHARSET_INFO *cs, const char *str,const char *str_end,
     {						// Found wild_many
       wildstr++;
       /* Remove any '%' and '_' from the wild search string */
-      for ( ; wildstr != wildend ; wildstr++)
+      for (; wildstr != wildend ; wildstr++)
       {
 	if (*wildstr == wild_many)
 	  continue;
@@ -787,7 +802,7 @@ int wild_compare(const char *str,const char *str_end,
     {						// Found wild_many
       wildstr++;
       /* Remove any '%' and '_' from the wild search string */
-      for ( ; wildstr != wildend ; wildstr++)
+      for (; wildstr != wildend ; wildstr++)
       {
 	if (*wildstr == wild_many)
 	  continue;

client/sql_string.h

@@ -46,22 +46,22 @@ public:
   String(uint32 length_arg)
   { 
     alloced=0; Alloced_length=0; (void) real_alloc(length_arg); 
-    str_charset=default_charset_info;  
+    str_charset=default_charset_info;
   }
-  String(const char *str)
+  String(const char *str, CHARSET_INFO *cs)
   { 
     Ptr=(char*) str; str_length=(uint) strlen(str); Alloced_length=0; alloced=0;
-    str_charset=default_charset_info;
+    str_charset=cs;
   }
-  String(const char *str,uint32 len)
+  String(const char *str,uint32 len, CHARSET_INFO *cs)
   { 
     Ptr=(char*) str; str_length=len; Alloced_length=0; alloced=0;
-    str_charset=default_charset_info;  
+    str_charset=cs;
   }
-  String(char *str,uint32 len)
+  String(char *str,uint32 len, CHARSET_INFO *cs)
   { 
     Ptr=(char*) str; Alloced_length=str_length=len; alloced=0;
-    str_charset=default_charset_info;
+    str_charset=cs;
   }
   String(const String &str)
   { 
@@ -74,6 +74,7 @@ public:
     { sql_element_free(ptr_arg); }
   ~String() { free(); }
 
+  inline void set_charset(CHARSET_INFO *charset) { str_charset=charset; }
   inline CHARSET_INFO *charset() const { return str_charset; }
   inline uint32 length() const { return str_length;}
   inline uint32 alloced_length() const { return Alloced_length;}
@@ -102,28 +103,31 @@ public:
       Alloced_length=str.Alloced_length-offset;
     else
       Alloced_length=0;
+    str_charset=str.str_charset;
   }
-  inline void set(char *str,uint32 arg_length)
+  inline void set(char *str,uint32 arg_length, CHARSET_INFO *cs)
   {
     free();
     Ptr=(char*) str; str_length=Alloced_length=arg_length ; alloced=0;
+    str_charset=cs;
   }
-  inline void set(const char *str,uint32 arg_length)
+  inline void set(const char *str,uint32 arg_length, CHARSET_INFO *cs)
   {
     free();
     Ptr=(char*) str; str_length=arg_length; Alloced_length=0 ; alloced=0;
+    str_charset=cs;
   }
-  inline void set_quick(char *str,uint32 arg_length)
+  inline void set_quick(char *str,uint32 arg_length, CHARSET_INFO *cs)
   {
     if (!alloced)
     {
       Ptr=(char*) str; str_length=Alloced_length=arg_length;
     }
+    str_charset=cs;
   }
-  bool set(longlong num);
+  bool set(longlong num, CHARSET_INFO *cs);
-  /* bool set(long num); */
+  bool set(ulonglong num, CHARSET_INFO *cs);
-  bool set(ulonglong num);
+  bool set(double num,uint decimals, CHARSET_INFO *cs);
-  bool set(double num,uint decimals=2);
   inline void free()
   {
     if (alloced)
@@ -174,7 +178,7 @@ public:
 
   bool copy();					// Alloc string if not alloced
   bool copy(const String &s);			// Allocate new string
-  bool copy(const char *s,uint32 arg_length);	// Allocate new string
+  bool copy(const char *s,uint32 arg_length, CHARSET_INFO *cs);	// Allocate new string
   bool append(const String &s);
   bool append(const char *s,uint32 arg_length=0);
   bool append(IO_CACHE* file, uint32 arg_length);
@@ -208,16 +212,17 @@ public:
   uint32 numchars();
   int charpos(int i,uint32 offset=0);
 
-// added by Holyfoot for "geometry" needs
   int reserve(uint32 space_needed)
   {
     return realloc(str_length + space_needed);
   }
   int reserve(uint32 space_needed, uint32 grow_by);
 
-// these append operations do NOT check alloced memory
+  /*
-// q_*** methods writes values of parameters itself
+    The following append operations do NOT check alloced memory
-// qs_*** methods writes string representation of value
+    q_*** methods writes values of parameters itself
+    qs_*** methods writes string representation of value
+  */
   void q_append(const char &c)
   {
     Ptr[str_length++] = c;