1 files changed, 92 insertions, 0 deletions
diff --git a/sql/gstream.h b/sql/gstream.h
new file mode 100644
index 00000000..c5c71539
--- /dev/null
+++ b/sql/gstream.h
@@ -0,0 +1,92 @@
+#ifndef GSTREAM_INCLUDED
+#define GSTREAM_INCLUDED
+
+/* Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335  USA */
+
+
+#include <my_sys.h>                             /* MY_ALLOW_ZERO_PTR */
+#include "m_ctype.h"           /* my_charset_latin1, my_charset_bin */
+
+class Gis_read_stream
+{
+public:
+  enum enum_tok_types
+  {
+    unknown,
+    eostream,
+    word,
+    numeric,
+    l_bra,
+    r_bra,
+    comma
+  };
+
+  Gis_read_stream(CHARSET_INFO *charset, const char *buffer, int size)
+    :m_cur(buffer), m_limit(buffer + size), m_err_msg(NULL), m_charset(charset)
+  {}
+  Gis_read_stream(): m_cur(NullS), m_limit(NullS), m_err_msg(NullS)
+  {}
+  ~Gis_read_stream()
+  {
+    my_free(m_err_msg);
+  }
+
+  enum enum_tok_types get_next_toc_type();
+  bool lookup_next_word(LEX_STRING *res);
+  bool get_next_word(LEX_STRING *);
+  bool get_next_number(double *);
+  bool check_next_symbol(char);
+
+  inline void skip_space()
+  {
+    while ((m_cur < m_limit) && my_isspace(&my_charset_latin1, *m_cur))
+      m_cur++;
+  }
+  /* Skip next character, if match. Return 1 if no match */
+  inline bool skip_char(char skip)
+  {
+    skip_space();
+    if ((m_cur >= m_limit) || *m_cur != skip)
+      return 1;					/* Didn't find char */
+    m_cur++;
+    return 0;
+  }
+  /* Returns the next notempty character. */
+  char next_symbol() 
+  {
+    skip_space();
+    if (m_cur >= m_limit)
+      return 0;                                 /* EOL meet. */
+    return *m_cur;
+  }
+  void set_error_msg(const char *msg);
+
+  // caller should free this pointer
+  char *get_error_msg()
+  {
+    char *err_msg = m_err_msg;
+    m_err_msg= NullS;
+    return err_msg;
+  }
+
+protected:
+  const char *m_cur;
+  const char *m_limit;
+  char *m_err_msg;
+  CHARSET_INFO *m_charset;
+};
+
+#endif /* GSTREAM_INCLUDED */