75 lines
2.2 KiB
C++
75 lines
2.2 KiB
C++
/* Copyright (c) 2015, 2016, 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 as published by
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the Free Software Foundation; version 2 of the License.
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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 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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#ifndef BOOTSTRAP_IMPL_H
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#define BOOTSTRAP_IMPL_H 1
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#include <string>
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#include "sql_bootstrap.h" // MAX_BOOTSTRAP_QUERY_SIZE
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/** abstract interface to reading bootstrap commands */
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class Command_iterator
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{
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public:
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/** start processing the iterator */
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virtual void begin(void) {}
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/**
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Get the next query string.
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@param[out] query return the query
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@param[out] read_error return the read error code
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@param[out] query_source return the source of the query
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(if it is from a file or a compiled one).
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@return one of the READ_BOOTSTRAP
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*/
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virtual int next(std::string &query, int *read_error, int *query_source)= 0;
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/** end processing the iterator */
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virtual void end(void) {}
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/** The current bootstrap command reader */
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static Command_iterator *current_iterator;
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protected:
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/** needed because of the virtual functions */
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virtual ~Command_iterator() {}
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};
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/** File bootstrap command reader */
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class File_command_iterator : public Command_iterator
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{
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public:
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File_command_iterator(fgets_input_t input, fgets_fn_t fgets_fn)
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: m_input(input), m_fgets_fn(fgets_fn), is_allocated(false)
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{}
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File_command_iterator(const char *file_name);
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virtual ~File_command_iterator();
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int next(std::string &query, int *read_error, int *query_source);
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void end(void);
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bool has_file()
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{
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return m_input != 0;
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}
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protected:
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fgets_input_t m_input;
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fgets_fn_t m_fgets_fn;
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bool is_allocated;
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};
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#endif /* BOOTSTRAP_IMPL_H */
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