Merge zim.(none):/home/brian/mysql/dep-5.0

into  zim.(none):/home/brian/mysql/dep-5.1


client/mysql.cc:
  Auto merged
mysql-test/r/grant.result:
  Auto merged
mysql-test/r/grant2.result:
  Auto merged
mysql-test/r/heap_btree.result:
  Auto merged
mysql-test/t/grant.test:
  Auto merged
mysql-test/t/grant2.test:
  Auto merged
mysql-test/t/mysqlbinlog.test:
  Auto merged
mysql-test/t/repair.test:
  Auto merged
scripts/fill_func_tables.sh:
  Auto merged
scripts/mysql_install_db.sh:
  Auto merged
sql/field.cc:
  Auto merged
sql/field.h:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/set_var.cc:
  Auto merged
sql/sql_update.cc:
  Auto merged
storage/heap/hp_delete.c:
  Auto merged
storage/myisam/mi_update.c:
  Auto merged
storage/myisam/sort.c:
  Auto merged
mysql-test/r/mysqldump.result:
  Fixing Result
mysql-test/r/repair.result:
  Fixing result
mysql-test/t/mysqldump.test:
  Merging change
storage/archive/ha_archive.cc:
  Merging in change

1 files changed, 22 insertions, 0 deletions

diff --git a/storage/archive/ha_archive.cc b/storage/archive/ha_archive.cc
index 6c0796e3bdc..de8b50fd2f3 100644
--- a/storage/archive/ha_archive.cc
+++ b/storage/archive/ha_archive.cc
@@ -901,6 +901,28 @@ int ha_archive::write_row(byte *buf)
     if (init_archive_writer())
       DBUG_RETURN(HA_ERR_CRASHED_ON_USAGE);
 
+  /*
+    Varchar structures are constant in size but are not cleaned up request
+    to request. The following sets all unused space to null to improve
+    compression.
+  */
+  for (Field **field=table->field ; *field ; field++)
+  {
+    DBUG_PRINT("archive",("Pack is %d\n", (*field)->pack_length()));
+    DBUG_PRINT("archive",("MyPack is %d\n", (*field)->data_length((char*) buf + (*field)->offset())));
+    if ((*field)->real_type() == MYSQL_TYPE_VARCHAR) 
+    {
+      uint actual_length= (*field)->data_length((char*) buf + (*field)->offset());
+      uint offset= (*field)->offset() + actual_length + 
+        (actual_length > 255 ? 2 : 1);
+      DBUG_PRINT("archive",("Offset is %d -> %d\n", actual_length, offset));
+      /*
+      if ((*field)->pack_length() + (*field)->offset() != offset)
+        bzero(buf + offset, (size_t)((*field)->pack_length() + (actual_length > 255 ? 2 : 1) - (*field)->data_length));
+    */
+    }
+  }
+
   share->rows_recorded++;
   rc= real_write_row(buf, &(share->archive_write));
 error: