remove append_escaped(), use String::append_for_single_quote() instead

sql/sql_analyse.cc

@@ -1080,7 +1080,7 @@ int collect_string(String *element,
   else
     info->found = 1;
   info->str->append('\'');
-  if (append_escaped(info->str, element))
+  if (info->str->append_for_single_quote(element))
     return 1;
   info->str->append('\'');
   return 0;
@@ -1239,56 +1239,3 @@ uint check_ulonglong(const char *str, uint length)
   return ((uchar) str[-1] <= (uchar) cmp[-1]) ? smaller : bigger;
 } /* check_ulonlong */
 
-
-/*
-  Quote special characters in a string.
-
-  SYNOPSIS
-   append_escaped(to_str, from_str)
-   to_str (in) A pointer to a String.
-   from_str (to) A pointer to an allocated string
-
-  DESCRIPTION
-    append_escaped() takes a String type variable, where it appends
-    escaped the second argument. Only characters that require escaping
-    will be escaped.
-
-  RETURN VALUES
-    0 Success
-    1 Out of memory
-*/
-
-bool append_escaped(String *to_str, String *from_str)
-{
-  char *from, *end, c;
-
-  if (to_str->realloc(to_str->length() + from_str->length()))
-    return 1;
-
-  from= (char*) from_str->ptr();
-  end= from + from_str->length();
-  for (; from < end; from++)
-  {
-    c= *from;
-    switch (c) {
-    case '\0':
-      c= '0';
-      break;
-    case '\032':
-      c= 'Z';
-      break;
-    case '\\':
-    case '\'':
-      break;
-    default:
-      goto normal_character;
-    }
-    if (to_str->append('\\'))
-      return 1;
-
-  normal_character:
-    if (to_str->append(c))
-      return 1;
-  }
-  return 0;
-}

sql/sql_analyse.h

@@ -365,6 +365,4 @@ public:
 				      List<Item> &field_list);
 };
 
-bool append_escaped(String *to_str, String *from_str);
-
 #endif /* SQL_ANALYSE_INCLUDED */

sql/sql_partition.cc

@@ -67,7 +67,6 @@
                                         // table_to_filename
                                         // mysql_*_alter_copy_data
 #include "opt_range.h"                  // store_key_image_to_rec
-#include "sql_analyse.h"                // append_escaped
 #include "sql_alter.h"                  // Alter_table_ctx
 
 #include <algorithm>
@@ -1935,10 +1934,9 @@ static int add_uint(File fptr, ulonglong number)
 */
 static int add_quoted_string(File fptr, const char *quotestr)
 {
-  String orgstr(quotestr, system_charset_info);
   String escapedstr;
   int err= add_string(fptr, "'");
-  err+= append_escaped(&escapedstr, &orgstr);
+  err+= escapedstr.append_for_single_quote(quotestr);
   err+= add_string(fptr, escapedstr.c_ptr_safe());
   return err + add_string(fptr, "'");
 }

sql/sql_string.h

@@ -496,7 +496,16 @@ public:
     return FALSE;
   }
   void print(String *print);
+
   bool append_for_single_quote(const char *st, uint len);
+  bool append_for_single_quote(const String *s)
+  {
+    return append_for_single_quote(s->ptr(), s->length());
+  }
+  bool append_for_single_quote(const char *st)
+  {
+    return append_for_single_quote(st, strlen(st));
+  }
 
   /* Swap two string objects. Efficient way to exchange data without memcpy. */
   void swap(String &s);

storage/federated/ha_federated.cc

@@ -1004,7 +1004,7 @@ static bool emit_key_part_element(String *to, KEY_PART_INFO *part,
     uint blob_length= uint2korr(ptr);
     blob.set_quick((char*) ptr+HA_KEY_BLOB_LENGTH,
                    blob_length, &my_charset_bin);
-    if (append_escaped(to, &blob))
+    if (to->append_for_single_quote(&blob))
       DBUG_RETURN(1);
   }
   else if (part->key_part_flag & HA_VAR_LENGTH_PART)
@@ -1013,7 +1013,7 @@ static bool emit_key_part_element(String *to, KEY_PART_INFO *part,
     uint var_length= uint2korr(ptr);
     varchar.set_quick((char*) ptr+HA_KEY_BLOB_LENGTH,
                       var_length, &my_charset_bin);
-    if (append_escaped(to, &varchar))
+    if (to->append_for_single_quote(&varchar))
       DBUG_RETURN(1);
   }
   else
@@ -1025,7 +1025,7 @@ static bool emit_key_part_element(String *to, KEY_PART_INFO *part,
 
     if (field->result_type() == STRING_RESULT)
     {
-      if (append_escaped(to, res))
+      if (to->append_for_single_quote(res))
         DBUG_RETURN(1);
     }
     else if (to->append(res->ptr(), res->length()))

storage/federatedx/ha_federatedx.cc

@@ -925,7 +925,7 @@ static bool emit_key_part_element(String *to, KEY_PART_INFO *part,
     uint blob_length= uint2korr(ptr);
     blob.set_quick((char*) ptr+HA_KEY_BLOB_LENGTH,
                    blob_length, &my_charset_bin);
-    if (append_escaped(to, &blob))
+    if (to->append_for_single_quote(&blob))
       DBUG_RETURN(1);
   }
   else if (part->key_part_flag & HA_VAR_LENGTH_PART)
@@ -934,7 +934,7 @@ static bool emit_key_part_element(String *to, KEY_PART_INFO *part,
     uint var_length= uint2korr(ptr);
     varchar.set_quick((char*) ptr+HA_KEY_BLOB_LENGTH,
                       var_length, &my_charset_bin);
-    if (append_escaped(to, &varchar))
+    if (to->append_for_single_quote(&varchar))
       DBUG_RETURN(1);
   }
   else
@@ -946,7 +946,7 @@ static bool emit_key_part_element(String *to, KEY_PART_INFO *part,
 
     if (field->result_type() == STRING_RESULT)
     {
-      if (append_escaped(to, res))
+      if (to->append_for_single_quote(res))
         DBUG_RETURN(1);
     }
     else if (to->append(res->ptr(), res->length()))

storage/spider/spd_db_conn.cc

@@ -7909,7 +7909,7 @@ int spider_db_open_item_string(
     tmp_str.mem_calc();
     str->q_append(SPIDER_SQL_VALUE_QUOTE_STR, SPIDER_SQL_VALUE_QUOTE_LEN);
     if (
-      append_escaped(str->get_str(), tmp_str2) ||
+      str->get_str()->append_for_single_quote(tmp_str2) ||
       str->reserve(SPIDER_SQL_VALUE_QUOTE_LEN)
     )
       DBUG_RETURN(HA_ERR_OUT_OF_MEM);
@@ -9029,7 +9029,7 @@ int spider_db_udf_ping_table_append_mon_next(
   str->q_append(SPIDER_SQL_SELECT_STR, SPIDER_SQL_SELECT_LEN);
   str->q_append(SPIDER_SQL_PING_TABLE_STR, SPIDER_SQL_PING_TABLE_LEN);
   str->q_append(SPIDER_SQL_VALUE_QUOTE_STR, SPIDER_SQL_VALUE_QUOTE_LEN);
-  append_escaped(str->get_str(), child_table_name_str.get_str());
+  str->get_str()->append_for_single_quote(child_table_name_str.get_str());
   str->mem_calc();
   str->q_append(SPIDER_SQL_VALUE_QUOTE_STR, SPIDER_SQL_VALUE_QUOTE_LEN);
   str->q_append(SPIDER_SQL_COMMA_STR, SPIDER_SQL_COMMA_LEN);
@@ -9040,7 +9040,7 @@ int spider_db_udf_ping_table_append_mon_next(
   str->q_append(limit_str, limit_str_length);
   str->q_append(SPIDER_SQL_COMMA_STR, SPIDER_SQL_COMMA_LEN);
   str->q_append(SPIDER_SQL_VALUE_QUOTE_STR, SPIDER_SQL_VALUE_QUOTE_LEN);
-  append_escaped(str->get_str(), where_clause_str.get_str());
+  str->get_str()->append_for_single_quote(where_clause_str.get_str());
   str->mem_calc();
   str->q_append(SPIDER_SQL_VALUE_QUOTE_STR, SPIDER_SQL_VALUE_QUOTE_LEN);
   str->q_append(SPIDER_SQL_COMMA_STR, SPIDER_SQL_COMMA_LEN);
@@ -9093,7 +9093,7 @@ int spider_db_udf_ping_table_append_select(
   ))
     DBUG_RETURN(HA_ERR_OUT_OF_MEM);
   if (use_where)
-    append_escaped(str->get_str(), where_str->get_str());
+    str->get_str()->append_for_single_quote(where_str->get_str());
   str->mem_calc();
   str->q_append(SPIDER_SQL_LIMIT_STR, SPIDER_SQL_LIMIT_LEN);
   str->q_append(limit_str, limit_str_length);

storage/spider/spd_db_mysql.cc

@@ -3717,7 +3717,7 @@ int spider_db_mysql_util::append_escaped_util(
 ) {
   DBUG_ENTER("spider_db_mysql_util::append_escaped_util");
   DBUG_PRINT("info",("spider this=%p", this));
-  append_escaped(to->get_str(), from);
+  to->get_str()->append_for_single_quote(from);
   to->mem_calc();
   DBUG_RETURN(0);
 }