86 lines
3.5 KiB
C
86 lines
3.5 KiB
C
/* Copyright 2021 Nick Brassel (@tzarc)
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*
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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, either version 2 of the License, or
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* (at your option) any later version.
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*
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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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*
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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, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <stdbool.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include "qp_internal.h"
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// Stream API
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typedef struct qp_stream_t qp_stream_t;
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#define qp_stream_get(stream_ptr) (((qp_stream_t *)(stream_ptr))->get((qp_stream_t *)(stream_ptr)))
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#define qp_stream_put(stream_ptr, c) (((qp_stream_t *)(stream_ptr))->put((qp_stream_t *)(stream_ptr), (c)))
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#define qp_stream_seek(stream_ptr, offset, origin) (((qp_stream_t *)(stream_ptr))->seek((qp_stream_t *)(stream_ptr), (offset), (origin)))
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#define qp_stream_tell(stream_ptr) (((qp_stream_t *)(stream_ptr))->tell((qp_stream_t *)(stream_ptr)))
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#define qp_stream_eof(stream_ptr) (((qp_stream_t *)(stream_ptr))->is_eof((qp_stream_t *)(stream_ptr)))
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#define qp_stream_setpos(stream_ptr, offset) qp_stream_seek((stream_ptr), (offset), SEEK_SET)
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#define qp_stream_getpos(stream_ptr) qp_stream_tell((stream_ptr))
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#define qp_stream_read(output_buf, member_size, num_members, stream_ptr) qp_stream_read_impl((output_buf), (member_size), (num_members), (qp_stream_t *)(stream_ptr))
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#define qp_stream_write(input_buf, member_size, num_members, stream_ptr) qp_stream_write_impl((input_buf), (member_size), (num_members), (qp_stream_t *)(stream_ptr))
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uint32_t qp_stream_read_impl(void *output_buf, uint32_t member_size, uint32_t num_members, qp_stream_t *stream);
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uint32_t qp_stream_write_impl(const void *input_buf, uint32_t member_size, uint32_t num_members, qp_stream_t *stream);
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#define qp_stream_close(stream_ptr) (((qp_stream_t *)(stream_ptr))->close((qp_stream_t *)(stream_ptr)))
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#define STREAM_EOF ((int16_t)(-1))
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// Stream definition
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struct qp_stream_t {
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int16_t (*get)(qp_stream_t *stream);
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bool (*put)(qp_stream_t *stream, uint8_t c);
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int (*seek)(qp_stream_t *stream, int32_t offset, int origin);
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int32_t (*tell)(qp_stream_t *stream);
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bool (*is_eof)(qp_stream_t *stream);
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void (*close)(qp_stream_t *stream);
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// Memory streams
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typedef struct qp_memory_stream_t {
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qp_stream_t base;
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uint8_t * buffer;
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int32_t length;
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int32_t position;
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bool is_eof;
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} qp_memory_stream_t;
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qp_memory_stream_t qp_make_memory_stream(void *buffer, int32_t length);
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// FILE streams
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#ifdef QP_STREAM_HAS_FILE_IO
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typedef struct qp_file_stream_t {
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qp_stream_t base;
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FILE * file;
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} qp_file_stream_t;
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qp_file_stream_t qp_make_file_stream(FILE *f);
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#endif // QP_STREAM_HAS_FILE_IO
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