skarg
146 lines
5.8 KiB
C
146 lines
5.8 KiB
C
/*####COPYRIGHTBEGIN####
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-------------------------------------------
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Copyright (C) 2005 Steve Karg
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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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:
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The Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA.
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As a special exception, if other files instantiate templates or
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use macros or inline functions from this file, or you compile
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this file and link it with other works to produce a work based
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on this file, this file does not by itself cause the resulting
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work to be covered by the GNU General Public License. However
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the source code for this file must still be made available in
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accordance with section (3) of the GNU General Public License.
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This exception does not invalidate any other reasons why a work
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based on this file might be covered by the GNU General Public
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License.
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-------------------------------------------
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####COPYRIGHTEND####*/
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#ifndef BACSTR_H
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#define BACSTR_H
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#include <stdint.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include "bacdef.h"
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/* bit strings
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They could be as large as 256/8=32 octets */
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#define MAX_BITSTRING_BYTES 15
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typedef struct BACnet_Bit_String {
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uint8_t bits_used;
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uint8_t value[MAX_BITSTRING_BYTES];
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} BACNET_BIT_STRING;
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#define MAX_CHARACTER_STRING_BYTES (MAX_APDU-6)
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typedef struct BACnet_Character_String {
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size_t length;
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uint8_t encoding;
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/* limit - 6 octets is the most our tag and type could be */
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char value[MAX_CHARACTER_STRING_BYTES];
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} BACNET_CHARACTER_STRING;
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/* FIXME: convert the bacdcode library to use BACNET_OCTET_STRING
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for APDU buffer to prevent buffer overflows */
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typedef struct BACnet_Octet_String {
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size_t length;
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/* limit - 6 octets is the most our tag and type could be */
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uint8_t value[MAX_APDU - 6];
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} BACNET_OCTET_STRING;
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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void bitstring_init(BACNET_BIT_STRING * bit_string);
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void bitstring_set_bit(BACNET_BIT_STRING * bit_string, uint8_t bit_number,
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bool value);
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bool bitstring_bit(BACNET_BIT_STRING * bit_string, uint8_t bit_number);
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uint8_t bitstring_bits_used(BACNET_BIT_STRING * bit_string);
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/* returns the number of bytes that a bit string is using */
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int bitstring_bytes_used(BACNET_BIT_STRING * bit_string);
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uint8_t bitstring_bits_capacity(BACNET_BIT_STRING * bit_string);
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/* used for encoding and decoding from the APDU */
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uint8_t bitstring_octet(BACNET_BIT_STRING * bit_string,
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uint8_t octet_index);
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bool bitstring_set_octet(BACNET_BIT_STRING * bit_string, uint8_t index,
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uint8_t octet);
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bool bitstring_set_bits_used(BACNET_BIT_STRING * bit_string,
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uint8_t bytes_used, uint8_t unused_bits);
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bool bitstring_copy(
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BACNET_BIT_STRING * dest,
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BACNET_BIT_STRING * src);
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/* returns false if the string exceeds capacity
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initialize by using length=0 */
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bool characterstring_init(BACNET_CHARACTER_STRING * char_string,
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uint8_t encoding, char *value, size_t length);
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/* used for ANSI C-Strings */
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bool characterstring_init_ansi(BACNET_CHARACTER_STRING * char_string,
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char *value);
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bool characterstring_copy(BACNET_CHARACTER_STRING * dest,
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BACNET_CHARACTER_STRING * src);
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/* returns true if the strings are the same length, encoding, value */
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bool characterstring_same(BACNET_CHARACTER_STRING * dest,
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BACNET_CHARACTER_STRING * src);
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bool characterstring_ansi_same(BACNET_CHARACTER_STRING * dest,
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const char *src);
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/* returns false if the string exceeds capacity */
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bool characterstring_append(BACNET_CHARACTER_STRING * char_string,
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char *value, size_t length);
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/* This function sets a new length without changing the value.
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If length exceeds capacity, no modification happens and
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function returns false. */
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bool characterstring_truncate(BACNET_CHARACTER_STRING * char_string,
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size_t length);
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bool characterstring_set_encoding(BACNET_CHARACTER_STRING *
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char_string, uint8_t encoding);
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/* Returns the value */
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char *characterstring_value(BACNET_CHARACTER_STRING * char_string);
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/* returns the length */
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size_t characterstring_length(BACNET_CHARACTER_STRING * char_string);
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uint8_t characterstring_encoding(BACNET_CHARACTER_STRING *
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char_string);
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size_t characterstring_capacity(BACNET_CHARACTER_STRING * char_string);
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/* returns false if the string exceeds capacity
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initialize by using length=0 */
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bool octetstring_init(BACNET_OCTET_STRING * octet_string,
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uint8_t * value, size_t length);
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bool octetstring_copy(BACNET_OCTET_STRING * dest,
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BACNET_OCTET_STRING * src);
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/* returns false if the string exceeds capacity */
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bool octetstring_append(BACNET_OCTET_STRING * octet_string,
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uint8_t * value, size_t length);
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/* This function sets a new length without changing the value.
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If length exceeds capacity, no modification happens and
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function returns false. */
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bool octetstring_truncate(BACNET_OCTET_STRING * octet_string,
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size_t length);
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/* Returns the value */
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uint8_t *octetstring_value(BACNET_OCTET_STRING * octet_string);
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/* Returns the length.*/
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size_t octetstring_length(BACNET_OCTET_STRING * octet_string);
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size_t octetstring_capacity(BACNET_OCTET_STRING * octet_string);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif
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