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88 lines
2.7 KiB
88 lines
2.7 KiB
5 months ago
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#ifndef GSTREAM_INCLUDED
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#define GSTREAM_INCLUDED
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/* Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#include <stddef.h>
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#include "lex_string.h"
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#include "m_ctype.h" /* my_charset_latin1, my_charset_bin */
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#include "m_string.h"
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#include "mysql/service_mysql_alloc.h"
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class THD;
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class Gis_read_stream {
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public:
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enum enum_tok_types { unknown, eostream, word, numeric, l_bra, r_bra, comma };
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Gis_read_stream(THD *thd, const CHARSET_INFO *charset, const char *buffer,
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int size)
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: m_cur(buffer),
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m_limit(buffer + size),
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m_err_msg(NULL),
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m_charset(charset),
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m_thd(thd) {}
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Gis_read_stream() : m_cur(NullS), m_limit(NullS), m_err_msg(NullS) {}
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~Gis_read_stream() { my_free(m_err_msg); }
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enum enum_tok_types get_next_toc_type();
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bool get_next_word(LEX_CSTRING *);
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bool get_next_number(double *);
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bool check_next_symbol(char);
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bool is_end_of_stream() { return get_next_toc_type() == eostream; }
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inline void skip_space() {
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while ((m_cur < m_limit) && my_isspace(&my_charset_latin1, *m_cur)) m_cur++;
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}
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/* Skip next character, if match. Return 1 if no match */
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inline bool skip_char(char skip) {
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skip_space();
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if ((m_cur >= m_limit) || *m_cur != skip) return 1; /* Didn't find char */
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m_cur++;
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return 0;
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}
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void set_error_msg(const char *msg);
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// caller should free this pointer
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char *get_error_msg() {
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char *err_msg = m_err_msg;
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m_err_msg = NullS;
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return err_msg;
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}
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THD *thd() { return m_thd; }
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protected:
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const char *m_cur;
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const char *m_limit;
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char *m_err_msg;
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const CHARSET_INFO *m_charset;
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private:
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THD *m_thd;
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};
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#endif /* GSTREAM_INCLUDED */
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