# name       : error_pad.patch
# introduced : 12
# maintainer : Oleg
#
#!!! notice !!!
# Any small change to this file in the main branch
# should be done or reviewed by the maintainer!
--- a/extra/comp_err.c
+++ b/extra/comp_err.c
@@ -32,11 +32,12 @@
 #include <assert.h>
 #include <my_dir.h>
 
-#define MAX_ROWS  1000
+#define MAX_ROWS  5000
 #define HEADER_LENGTH 32                /* Length of header in errmsg.sys */
 #define DEFAULT_CHARSET_DIR "../sql/share/charsets"
 #define ER_PREFIX "ER_"
 #define WARN_PREFIX "WARN_"
+#define PADD_PREFIX "PADD_"
 static char *OUTFILE= (char*) "errmsg.sys";
 static char *HEADERFILE= (char*) "mysqld_error.h";
 static char *NAMEFILE= (char*) "mysqld_ername.h";
@@ -91,6 +92,7 @@
   const char *sql_code1;		/* sql state */
   const char *sql_code2;		/* ODBC state */
   struct errors *next_error;            /* Pointer to next error */
+  my_bool is_padding;                   /* If true - padd this er_name while er_code != d_code*/
   DYNAMIC_ARRAY msg;                    /* All language texts for this error */
 };
 
@@ -129,6 +131,7 @@
 
 
 static struct languages *parse_charset_string(char *str);
+static struct errors *parse_padd_string(char *ptr, int er_count);
 static struct errors *parse_error_string(char *ptr, int er_count);
 static struct message *parse_message_string(struct message *new_message,
 					    char *str);
@@ -253,6 +256,11 @@
 
   for (tmp_error= error_head; tmp_error; tmp_error= tmp_error->next_error)
   {
+    if (tmp_error->is_padding)
+    {
+      er_last= tmp_error->d_code;
+      continue;
+    }
     /*
        generating mysqld_error.h
        fprintf() will automatically add \r on windows
@@ -345,12 +353,29 @@
 		"language\n", tmp_error->er_name, tmp_lang->lang_short_name);
 	goto err;
       }
-      if (copy_rows(to, tmp->text, row_nr, start_pos))
+      if (tmp_error->is_padding)
       {
-	fprintf(stderr, "Failed to copy rows to %s\n", outfile);
-	goto err;
+        uint padd_to= tmp_error->d_code;
+        char* padd_message= tmp->text;
+        while ((row_nr+er_offset) < padd_to)
+        {
+          if (copy_rows(to, padd_message,row_nr,start_pos))
+          {
+            fprintf(stderr, "Failed to copy rows to %s\n", outfile);
+            goto err;
+          }
+          row_nr++;
+        }
+      }
+      else
+      {
+        if (copy_rows(to, tmp->text, row_nr, start_pos))
+        {
+          fprintf(stderr, "Failed to copy rows to %s\n", outfile);
+          goto err;
+        }
+        row_nr++;
       }
-      row_nr++;
     }
 
     /* continue with header of the errmsg.sys file */
@@ -501,14 +526,26 @@
 	DBUG_RETURN(0);
       continue;
     }
-    if (is_prefix(str, ER_PREFIX) || is_prefix(str, WARN_PREFIX))
+    if (is_prefix(str, ER_PREFIX) || is_prefix(str, WARN_PREFIX) || is_prefix(str, PADD_PREFIX))
     {
-      if (!(current_error= parse_error_string(str, rcount)))
+      if (is_prefix(str, PADD_PREFIX))
       {
-	fprintf(stderr, "Failed to parse the error name string\n");
-	DBUG_RETURN(0);
+        if (!(current_error= parse_padd_string(str, rcount)))
+        {
+          fprintf(stderr, "Failed to parse the error pad string\n");
+          DBUG_RETURN(0);
+        }
+        rcount= current_error->d_code - er_offset;  /* Count number of unique errors */
+      }
+      else
+      {
+        if (!(current_error= parse_error_string(str, rcount)))
+        {
+          fprintf(stderr, "Failed to parse the error name string\n");
+          DBUG_RETURN(0);
+        }
+        rcount++;                         /* Count number of unique errors */
       }
-      rcount++;                         /* Count number of unique errors */
 
       /* add error to the list */
       *tail_error= current_error;
@@ -849,78 +886,122 @@
   DBUG_RETURN(new_message);
 }
 
+static struct errors* create_new_error(my_bool is_padding, char *er_name, int d_code, const char *sql_code1, const char *sql_code2)
+{
+  struct errors *new_error;
+  DBUG_ENTER("create_new_error");
+  /* create a new element */
+  new_error= (struct errors *) my_malloc(sizeof(*new_error), MYF(MY_WME));
+  if (my_init_dynamic_array(&new_error->msg, sizeof(struct message), 0, 0))
+    DBUG_RETURN(0);				/* OOM: Fatal error */
+  new_error->is_padding= is_padding;
+  DBUG_PRINT("info", ("is_padding: %s", (is_padding ? "true" : "false")));
+  new_error->er_name= er_name;
+  DBUG_PRINT("info", ("er_name: %s", er_name));
+  new_error->d_code= d_code;
+  DBUG_PRINT("info", ("d_code: %d", d_code));
+  new_error->sql_code1= sql_code1;
+  DBUG_PRINT("info", ("sql_code1: %s", sql_code1));
+  new_error->sql_code2= sql_code2;
+  DBUG_PRINT("info", ("sql_code2: %s", sql_code2));
+  DBUG_RETURN(new_error);
+}
 
 /*
-  Parsing the string with error name and codes; returns the pointer to
+  Parsing the string with padd syntax (name + error to pad); returns the pointer to
   the errors struct
 */
 
-static struct errors *parse_error_string(char *str, int er_count)
+static struct errors *parse_padd_string(char* str, int er_count)
 {
-  struct errors *new_error;
+  char *er_name;
+  uint d_code;
+  char *start;
   DBUG_ENTER("parse_error_string");
   DBUG_PRINT("enter", ("str: %s", str));
 
-  /* create a new element */
-  new_error= (struct errors *) my_malloc(sizeof(*new_error), MYF(MY_WME));
+  start= str;
+  str= skip_delimiters(str);
 
-  if (my_init_dynamic_array(&new_error->msg, sizeof(struct message), 0, 0))
+  /* getting the error name */
+
+  if (!(er_name= get_word(&str)))
     DBUG_RETURN(0);				/* OOM: Fatal error */
 
-  /* getting the error name */
   str= skip_delimiters(str);
 
-  if (!(new_error->er_name= get_word(&str)))
+  if (!(d_code= parse_error_offset(start)))
+  {
+    fprintf(stderr, "Failed to parse the error pad string '%s' '%s' (d_code doesn't parse)!\n",er_name,str);
+    DBUG_RETURN(0);
+  }
+  if (d_code < (uint)(er_offset + er_count))
+  {
+    fprintf(stderr, "Error to padding less current error number!\n");
+    DBUG_RETURN(0);
+  }
+  DBUG_RETURN(create_new_error(TRUE,er_name,d_code,empty_string,empty_string));
+}
+
+/*
+  Parsing the string with error name and codes; returns the pointer to
+  the errors struct
+*/
+
+static struct errors *parse_error_string(char *str, int er_count)
+{
+  char *er_name;
+  int d_code;
+  const char *sql_code1= empty_string;
+  const char *sql_code2= empty_string;
+  DBUG_ENTER("parse_error_string");
+  DBUG_PRINT("enter", ("str: %s", str));
+
+  str= skip_delimiters(str);
+
+  /* getting the error name */
+
+  if (!(er_name= get_word(&str)))
     DBUG_RETURN(0);				/* OOM: Fatal error */
-  DBUG_PRINT("info", ("er_name: %s", new_error->er_name));
 
   str= skip_delimiters(str);
 
   /* getting the code1 */
-
-  new_error->d_code= er_offset + er_count;
-  DBUG_PRINT("info", ("d_code: %d", new_error->d_code));
+  d_code= er_offset + er_count;
 
   str= skip_delimiters(str);
 
   /* if we reached EOL => no more codes, but this can happen */
   if (!*str)
   {
-    new_error->sql_code1= empty_string;
-    new_error->sql_code2= empty_string;
     DBUG_PRINT("info", ("str: %s", str));
-    DBUG_RETURN(new_error);
+    goto complete_create;
   }
-
   /* getting the sql_code 1 */
-
-  if (!(new_error->sql_code1= get_word(&str)))
+  if (!(sql_code1= get_word(&str)))
     DBUG_RETURN(0);				/* OOM: Fatal error */
-  DBUG_PRINT("info", ("sql_code1: %s", new_error->sql_code1));
 
   str= skip_delimiters(str);
 
   /* if we reached EOL => no more codes, but this can happen */
   if (!*str)
   {
-    new_error->sql_code2= empty_string;
     DBUG_PRINT("info", ("str: %s", str));
-    DBUG_RETURN(new_error);
+    goto complete_create;
   }
-
   /* getting the sql_code 2 */
-  if (!(new_error->sql_code2= get_word(&str)))
+  if (!(sql_code2= get_word(&str)))
     DBUG_RETURN(0);				/* OOM: Fatal error */
-  DBUG_PRINT("info", ("sql_code2: %s", new_error->sql_code2));
 
   str= skip_delimiters(str);
+
   if (*str)
   {
     fprintf(stderr, "The error line did not end with sql/odbc code!");
     DBUG_RETURN(0);
   }
-
-  DBUG_RETURN(new_error);
+complete_create:
+  DBUG_RETURN(create_new_error(FALSE,er_name,d_code,sql_code1,sql_code2));
 }