1 /* 2 * This file is part of the MicroPython project, http://micropython.org/ 3 * 4 * The MIT License (MIT) 5 * 6 * Copyright (c) 2013-2016 Damien P. George 7 * 8 * Permission is hereby granted, free of charge, to any person obtaining a copy 9 * of this software and associated documentation files (the "Software"), to deal 10 * in the Software without restriction, including without limitation the rights 11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 12 * copies of the Software, and to permit persons to whom the Software is 13 * furnished to do so, subject to the following conditions: 14 * 15 * The above copyright notice and this permission notice shall be included in 16 * all copies or substantial portions of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 24 * THE SOFTWARE. 25 */ 26 #ifndef MICROPY_INCLUDED_PY_READER_H 27 #define MICROPY_INCLUDED_PY_READER_H 28 29 #include "py/obj.h" 30 31 // the readbyte function must return the next byte in the input stream 32 // it must return MP_READER_EOF if end of stream 33 // it can be called again after returning MP_READER_EOF, and in that case must return MP_READER_EOF 34 #define MP_READER_EOF ((mp_uint_t)(-1)) 35 36 typedef struct _mp_reader_t { 37 void *data; 38 mp_uint_t (*readbyte)(void *data); 39 void (*close)(void *data); 40 } mp_reader_t; 41 42 void mp_reader_new_mem(mp_reader_t *reader, const byte *buf, size_t len, size_t free_len); 43 void mp_reader_new_file(mp_reader_t *reader, const char *filename); 44 void mp_reader_new_file_from_fd(mp_reader_t *reader, int fd, bool close_fd); 45 46 #endif // MICROPY_INCLUDED_PY_READER_H 47