Current File : //proc/thread-self/root/usr/include/mysql/server/private/gstream.h
#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 */
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