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CANopenNode/301/CO_fifo.c
Janez c1a30b8a03 Some style corrections 
- add CO_fifo_st enumerator for use in CO_fifo_cpyTok2xx functions.
- 309/CO_gateway_ascii: add x8 to x64 nonstandard data types
- example compiles now
- Fix "unused argument" warnings in socketCAN
2020-05-15 15:52:22 +02:00

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/*
* FIFO circular buffer
*
* @file CO_fifo.c
* @ingroup CO_CANopen_309_fifo
* @author Janez Paternoster
* @copyright 2020 Janez Paternoster
*
* This file is part of CANopenNode, an opensource CANopen Stack.
* Project home page is <https://github.com/CANopenNode/CANopenNode>.
* For more information on CANopen see <http://www.can-cia.org/>.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "301/CO_fifo.h"
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#if CO_CONFIG_FIFO_ASCII_COMMANDS == 1
#include <stdio.h>
#include <inttypes.h>
/* Non-graphical character for command delimiter */
#define DELIM_COMMAND '\n'
/* Graphical character for comment delimiter */
#define DELIM_COMMENT '#'
#endif /* CO_CONFIG_FIFO_ASCII_COMMANDS == 1 */
/******************************************************************************/
void CO_fifo_init(CO_fifo_t *fifo, char *buf, size_t bufSize) {
if (fifo == NULL || buf == NULL || bufSize < 2) {
return;
}
fifo->readPtr = 0;
fifo->writePtr = 0;
fifo->buf = buf;
fifo->bufSize = bufSize;
return;
}
#if CO_CONFIG_FIFO_CRC16_CCITT == 1
/* CRC calculation algorithm
* Author of the original crc16 ccitt C code is Lammert Bies.
*
* CRC table is calculated by the following algorithm:
*
* void CO_fifo_crc16_ccitt_table_init(void) {
* uint16_t i, j;
* for (i = 0; i < 256; i++) {
* uint16_t crc = 0;
* uint16_t c = i << 8;
* for(j = 0; j < 8; j++) {
* if((crc ^ c) & 0x8000) crc = (crc << 1) ^ 0x1021;
* else crc = crc << 1;
* c = c << 1;
* }
* CO_fifo_crc16_ccitt_table[i] = crc;
* }
* } */
static const uint16_t CO_fifo_crc16_ccitt_table[256] = {
0x0000U, 0x1021U, 0x2042U, 0x3063U, 0x4084U, 0x50A5U, 0x60C6U, 0x70E7U,
0x8108U, 0x9129U, 0xA14AU, 0xB16BU, 0xC18CU, 0xD1ADU, 0xE1CEU, 0xF1EFU,
0x1231U, 0x0210U, 0x3273U, 0x2252U, 0x52B5U, 0x4294U, 0x72F7U, 0x62D6U,
0x9339U, 0x8318U, 0xB37BU, 0xA35AU, 0xD3BDU, 0xC39CU, 0xF3FFU, 0xE3DEU,
0x2462U, 0x3443U, 0x0420U, 0x1401U, 0x64E6U, 0x74C7U, 0x44A4U, 0x5485U,
0xA56AU, 0xB54BU, 0x8528U, 0x9509U, 0xE5EEU, 0xF5CFU, 0xC5ACU, 0xD58DU,
0x3653U, 0x2672U, 0x1611U, 0x0630U, 0x76D7U, 0x66F6U, 0x5695U, 0x46B4U,
0xB75BU, 0xA77AU, 0x9719U, 0x8738U, 0xF7DFU, 0xE7FEU, 0xD79DU, 0xC7BCU,
0x48C4U, 0x58E5U, 0x6886U, 0x78A7U, 0x0840U, 0x1861U, 0x2802U, 0x3823U,
0xC9CCU, 0xD9EDU, 0xE98EU, 0xF9AFU, 0x8948U, 0x9969U, 0xA90AU, 0xB92BU,
0x5AF5U, 0x4AD4U, 0x7AB7U, 0x6A96U, 0x1A71U, 0x0A50U, 0x3A33U, 0x2A12U,
0xDBFDU, 0xCBDCU, 0xFBBFU, 0xEB9EU, 0x9B79U, 0x8B58U, 0xBB3BU, 0xAB1AU,
0x6CA6U, 0x7C87U, 0x4CE4U, 0x5CC5U, 0x2C22U, 0x3C03U, 0x0C60U, 0x1C41U,
0xEDAEU, 0xFD8FU, 0xCDECU, 0xDDCDU, 0xAD2AU, 0xBD0BU, 0x8D68U, 0x9D49U,
0x7E97U, 0x6EB6U, 0x5ED5U, 0x4EF4U, 0x3E13U, 0x2E32U, 0x1E51U, 0x0E70U,
0xFF9FU, 0xEFBEU, 0xDFDDU, 0xCFFCU, 0xBF1BU, 0xAF3AU, 0x9F59U, 0x8F78U,
0x9188U, 0x81A9U, 0xB1CAU, 0xA1EBU, 0xD10CU, 0xC12DU, 0xF14EU, 0xE16FU,
0x1080U, 0x00A1U, 0x30C2U, 0x20E3U, 0x5004U, 0x4025U, 0x7046U, 0x6067U,
0x83B9U, 0x9398U, 0xA3FBU, 0xB3DAU, 0xC33DU, 0xD31CU, 0xE37FU, 0xF35EU,
0x02B1U, 0x1290U, 0x22F3U, 0x32D2U, 0x4235U, 0x5214U, 0x6277U, 0x7256U,
0xB5EAU, 0xA5CBU, 0x95A8U, 0x8589U, 0xF56EU, 0xE54FU, 0xD52CU, 0xC50DU,
0x34E2U, 0x24C3U, 0x14A0U, 0x0481U, 0x7466U, 0x6447U, 0x5424U, 0x4405U,
0xA7DBU, 0xB7FAU, 0x8799U, 0x97B8U, 0xE75FU, 0xF77EU, 0xC71DU, 0xD73CU,
0x26D3U, 0x36F2U, 0x0691U, 0x16B0U, 0x6657U, 0x7676U, 0x4615U, 0x5634U,
0xD94CU, 0xC96DU, 0xF90EU, 0xE92FU, 0x99C8U, 0x89E9U, 0xB98AU, 0xA9ABU,
0x5844U, 0x4865U, 0x7806U, 0x6827U, 0x18C0U, 0x08E1U, 0x3882U, 0x28A3U,
0xCB7DU, 0xDB5CU, 0xEB3FU, 0xFB1EU, 0x8BF9U, 0x9BD8U, 0xABBBU, 0xBB9AU,
0x4A75U, 0x5A54U, 0x6A37U, 0x7A16U, 0x0AF1U, 0x1AD0U, 0x2AB3U, 0x3A92U,
0xFD2EU, 0xED0FU, 0xDD6CU, 0xCD4DU, 0xBDAAU, 0xAD8BU, 0x9DE8U, 0x8DC9U,
0x7C26U, 0x6C07U, 0x5C64U, 0x4C45U, 0x3CA2U, 0x2C83U, 0x1CE0U, 0x0CC1U,
0xEF1FU, 0xFF3EU, 0xCF5DU, 0xDF7CU, 0xAF9BU, 0xBFBAU, 0x8FD9U, 0x9FF8U,
0x6E17U, 0x7E36U, 0x4E55U, 0x5E74U, 0x2E93U, 0x3EB2U, 0x0ED1U, 0x1EF0U
};
/*
* Update crc16_ccitt variable with one data byte
*
* This function updates crc variable for one data byte using crc16 ccitt
* algorithm. Function is used inside CO_fifo_write() and CO_fifo_altRead().
* User can also provide own function for crc calculation.
*
* @param [in,out] crc Externally defined variable for CRC checksum
* @param chr One byte of data
*/
static inline void CO_fifo_crc16_ccitt(uint16_t *crc, const char chr) {
uint8_t tmp = (uint8_t)(*crc >> 8) ^ (uint8_t)chr;
*crc = (*crc << 8) ^ CO_fifo_crc16_ccitt_table[tmp];
}
#endif /* CO_CONFIG_FIFO_CRC16_CCITT == 1 */
/* Circular FIFO buffer example for fifo->bufSize = 7 (usable size = 6): ******
* *
* 0 * * * * *
* 1 rp==wp readPtr writePtr * *
* 2 * * * * *
* 3 * * * writePtr *
* 4 * writePtr readPtr readPtr *
* 5 * * * * *
* 6 * * * * *
* *
* empty 3 bytes 4 bytes buffer *
* buffer in buff in buff full *
******************************************************************************/
size_t CO_fifo_write(CO_fifo_t *fifo,
const char *buf,
size_t count,
uint16_t *crc)
{
size_t i;
char *bufDest;
if (fifo == NULL || buf == NULL) {
return 0;
}
bufDest = &fifo->buf[fifo->writePtr];
for (i = count; i > 0; i--) {
size_t writePtrNext = fifo->writePtr + 1;
/* is circular buffer full */
if (writePtrNext == fifo->readPtr ||
(writePtrNext == fifo->bufSize && fifo->readPtr == 0)) {
break;
}
*bufDest = *buf;
#if CO_CONFIG_FIFO_CRC16_CCITT > 0
if (crc != NULL) {
CO_fifo_crc16_ccitt(crc, *buf);
}
#endif
/* increment variables */
if (writePtrNext == fifo->bufSize) {
fifo->writePtr = 0;
bufDest = &fifo->buf[0];
}
else {
fifo->writePtr++;
bufDest++;
}
buf++;
}
return count - i;
}
/******************************************************************************/
size_t CO_fifo_read(CO_fifo_t *fifo, char *buf, size_t count, bool_t *eof) {
size_t i;
const char *bufSrc;
if (eof != NULL) {
*eof = false;
}
if (fifo == NULL || buf == NULL || fifo->readPtr == fifo->writePtr) {
return 0;
}
bufSrc = &fifo->buf[fifo->readPtr];
for (i = count; i > 0; ) {
const char c = *bufSrc;
/* is circular buffer empty */
if (fifo->readPtr == fifo->writePtr) {
break;
}
*(buf++) = c;
/* increment variables */
if (++fifo->readPtr == fifo->bufSize) {
fifo->readPtr = 0;
bufSrc = &fifo->buf[0];
}
else {
bufSrc++;
}
i--;
#if CO_CONFIG_FIFO_ASCII_COMMANDS == 1
/* is delimiter? */
if (eof != NULL && c == DELIM_COMMAND) {
*eof = true;
break;
}
#endif
}
return count - i;
}
#if CO_CONFIG_FIFO_ALT_READ == 1
/******************************************************************************/
size_t CO_fifo_altBegin(CO_fifo_t *fifo, size_t offset) {
size_t i;
if (fifo == NULL) {
return 0;
}
fifo->altReadPtr = fifo->readPtr;
for (i = offset; i > 0; i--) {
/* is circular buffer empty */
if (fifo->altReadPtr == fifo->writePtr) {
break;
}
/* increment variable */
if (++fifo->altReadPtr == fifo->bufSize) {
fifo->altReadPtr = 0;
}
}
return offset - i;
}
void CO_fifo_altFinish(CO_fifo_t *fifo, uint16_t *crc) {
if (fifo == NULL) {
return;
}
if (crc == NULL) {
fifo->readPtr = fifo->altReadPtr;
}
else {
const char *bufSrc = &fifo->buf[fifo->readPtr];
while (fifo->readPtr != fifo->altReadPtr) {
#if CO_CONFIG_FIFO_CRC16_CCITT > 0
CO_fifo_crc16_ccitt(crc, *bufSrc);
#endif
/* increment variable */
if (++fifo->readPtr == fifo->bufSize) {
fifo->readPtr = 0;
bufSrc = &fifo->buf[0];
}
else {
bufSrc++;
}
}
}
}
size_t CO_fifo_altRead(CO_fifo_t *fifo, char *buf, size_t count) {
size_t i;
const char *bufSrc;
bufSrc = &fifo->buf[fifo->altReadPtr];
for (i = count; i > 0; i--) {
const char c = *bufSrc;
/* is there no more data */
if (fifo->altReadPtr == fifo->writePtr) {
break;
}
*(buf++) = c;
/* increment variables */
if (++fifo->altReadPtr == fifo->bufSize) {
fifo->altReadPtr = 0;
bufSrc = &fifo->buf[0];
}
else {
bufSrc++;
}
}
return count - i;
}
#endif /* CO_CONFIG_FIFO_ALT_READ == 1 */
#if CO_CONFIG_FIFO_ASCII_COMMANDS == 1
/******************************************************************************/
bool_t CO_fifo_CommSearch(CO_fifo_t *fifo, bool_t clear) {
bool_t newCommand = false;
size_t count;
char *commandEnd;
if (fifo == NULL || fifo->readPtr == fifo->writePtr) {
return 0;
}
/* search delimiter until writePtr or until end of buffer */
if (fifo->readPtr < fifo->writePtr) {
count = fifo->writePtr - fifo->readPtr;
} else {
count = fifo->bufSize - fifo->readPtr;
}
commandEnd = (char *)memchr((const void *)&fifo->buf[fifo->readPtr],
DELIM_COMMAND,
count);
if (commandEnd != NULL) {
newCommand = true;
}
else if (fifo->readPtr > fifo->writePtr) {
/* not found, search in the beginning of the circular buffer */
commandEnd = (char *)memchr((const void *)&fifo->buf[0],
DELIM_COMMAND,
fifo->writePtr);
if (commandEnd != NULL || fifo->readPtr == (fifo->writePtr + 1)) {
/* command delimiter found or buffer full */
newCommand = true;
}
}
else if (fifo->readPtr == 0 && fifo->writePtr == (fifo->bufSize - 1)) {
/* buffer full */
newCommand = true;
}
/* Clear buffer if set so */
if (clear) {
if (commandEnd != NULL) {
fifo->readPtr = (int)(commandEnd - fifo->buf) + 1;
if (fifo->readPtr == fifo->bufSize) {
fifo->readPtr = 0;
}
}
else {
fifo->readPtr = fifo->writePtr;
}
}
return newCommand;
}
/******************************************************************************/
bool_t CO_fifo_trimSpaces(CO_fifo_t *fifo) {
bool_t delimCommandFound = false;
if (fifo != NULL) {
while (fifo->readPtr != fifo->writePtr) {
char c = fifo->buf[fifo->readPtr];
if (c == DELIM_COMMENT) {
/* comment found, clear all until next DELIM_COMMAND */
while (fifo->readPtr != fifo->writePtr) {
if (++fifo->readPtr == fifo->bufSize) {
fifo->readPtr = 0;
}
if (c == DELIM_COMMAND) {
delimCommandFound = true;
break;
}
}
break;
}
else if (isgraph(c) != 0) {
break;
}
if (++fifo->readPtr == fifo->bufSize) {
fifo->readPtr = 0;
}
if (c == DELIM_COMMAND) {
delimCommandFound = true;
break;
}
}
}
return delimCommandFound;
}
/******************************************************************************/
size_t CO_fifo_readToken(CO_fifo_t *fifo,
char *buf,
size_t count,
char *closed,
bool_t *err)
{
bool_t delimCommandFound = false;
bool_t delimCommentFound = false;
size_t tokenSize = 0;
if (fifo != NULL && buf != NULL && count > 1 && (err == NULL || *err == 0)
&& fifo->readPtr != fifo->writePtr
) {
bool_t finished = false;
char step = 0;
size_t ptr = fifo->readPtr; /* current pointer (integer, 0 based) */
char *c = &fifo->buf[ptr]; /* current char */
do {
switch (step) {
case 0: /* skip leading empty characters, stop on delimiter */
if (isgraph(*c) != 0) {
if (*c == DELIM_COMMENT) {
delimCommentFound = true;
} else {
buf[tokenSize++] = *c;
step++;
}
}
else if (*c == DELIM_COMMAND) {
delimCommandFound = true;
}
break;
case 1: /* search for end of the token */
if (isgraph(*c) != 0) {
if (*c == DELIM_COMMENT) {
delimCommentFound = true;
} else if (tokenSize < count) {
buf[tokenSize++] = *c;
}
}
else {
if (*c == DELIM_COMMAND) {
delimCommandFound = true;
}
step++;
}
break;
case 2: /* skip trailing empty characters */
if (isgraph(*c) != 0) {
if (*c == DELIM_COMMENT) {
delimCommentFound = true;
} else {
fifo->readPtr = ptr;
finished = true;
}
}
else if (*c == DELIM_COMMAND) {
delimCommandFound = true;
}
break;
}
if (delimCommentFound == true) {
/* Comment delimiter found, clear all till end of the line. */
fifo->readPtr = ptr;
delimCommandFound = CO_fifo_CommSearch(fifo, true);
finished = true;
}
else if (delimCommandFound) {
/* command delimiter found, set readPtr behind it. */
if (++ptr == fifo->bufSize) ptr = 0;
fifo->readPtr = ptr;
finished = true;
}
else if (!finished) {
/* find next character in the circular buffer */
if (++ptr == fifo->bufSize) {
ptr = 0;
c = &fifo->buf[ptr];
}
else {
c++;
}
/* end, if buffer is now empty */
if (ptr == fifo->writePtr) {
if (step == 2) {
fifo->readPtr = ptr;
}
else {
tokenSize = 0;
}
finished = true;
}
}
} while (!finished);
}
/* set 'err' return value */
if (err != NULL && *err == false) {
if (tokenSize == count || (closed != NULL &&
((*closed == 1 && (!delimCommandFound || tokenSize == 0)) ||
(*closed == 0 && (delimCommandFound || tokenSize == 0)))
)) {
*err = true;
}
}
/* set 'closed' return value */
if (closed != NULL) {
*closed = delimCommandFound ? 1 : 0;
}
/* token was larger then size of the buffer, all was cleaned, return '' */
if (tokenSize == count) {
tokenSize = 0;
}
/* write string terminator character */
if (buf != NULL && count > tokenSize) {
buf[tokenSize] = '\0';
}
return tokenSize;
}
/******************************************************************************/
size_t CO_fifo_readU82a(CO_fifo_t *fifo, char *buf, size_t count, bool_t end) {
uint8_t n;
if (fifo != NULL && count >= 6 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (char *)&n, sizeof(n), NULL);
return sprintf(buf, "%"PRIu8, n);
}
else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t CO_fifo_readU162a(CO_fifo_t *fifo, char *buf, size_t count, bool_t end) {
uint16_t n;
if (fifo != NULL && count >= 8 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (char *)&n, sizeof(n), NULL);
return sprintf(buf, "%"PRIu16, CO_SWAP_16(n));
}
else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t CO_fifo_readU322a(CO_fifo_t *fifo, char *buf, size_t count, bool_t end) {
uint32_t n;
if (fifo != NULL && count >= 12 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (char *)&n, sizeof(n), NULL);
return sprintf(buf, "%"PRIu32, CO_SWAP_32(n));
}
else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t CO_fifo_readU642a(CO_fifo_t *fifo, char *buf, size_t count, bool_t end) {
uint64_t n;
if (fifo != NULL && count >= 20 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (char *)&n, sizeof(n), NULL);
return sprintf(buf, "%"PRIu64, CO_SWAP_64(n));
}
else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t CO_fifo_readX82a(CO_fifo_t *fifo, char *buf, size_t count, bool_t end) {
uint8_t n;
if (fifo != NULL && count >= 6 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (char *)&n, sizeof(n), NULL);
return sprintf(buf, "0x%02"PRIX8, n);
}
else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t CO_fifo_readX162a(CO_fifo_t *fifo, char *buf, size_t count, bool_t end) {
uint16_t n;
if (fifo != NULL && count >= 8 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (char *)&n, sizeof(n), NULL);
return sprintf(buf, "0x%04"PRIX16, CO_SWAP_16(n));
}
else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t CO_fifo_readX322a(CO_fifo_t *fifo, char *buf, size_t count, bool_t end) {
uint32_t n;
if (fifo != NULL && count >= 12 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (char *)&n, sizeof(n), NULL);
return sprintf(buf, "0x%08"PRIX32, CO_SWAP_32(n));
}
else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t CO_fifo_readX642a(CO_fifo_t *fifo, char *buf, size_t count, bool_t end) {
uint64_t n;
if (fifo != NULL && count >= 20 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (char *)&n, sizeof(n), NULL);
return sprintf(buf, "0x%016"PRIX64, CO_SWAP_64(n));
}
else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t CO_fifo_readI82a(CO_fifo_t *fifo, char *buf, size_t count, bool_t end) {
int8_t n;
if (fifo != NULL && count >= 6 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (char *)&n, sizeof(n), NULL);
return sprintf(buf, "%"PRId8, n);
}
else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t CO_fifo_readI162a(CO_fifo_t *fifo, char *buf, size_t count, bool_t end) {
int16_t n;
if (fifo != NULL && count >= 8 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (char *)&n, sizeof(n), NULL);
return sprintf(buf, "%"PRId16, CO_SWAP_16(n));
}
else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t CO_fifo_readI322a(CO_fifo_t *fifo, char *buf, size_t count, bool_t end) {
int32_t n;
if (fifo != NULL && count >= 13 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (char *)&n, sizeof(n), NULL);
return sprintf(buf, "%"PRId32, CO_SWAP_32(n));
}
else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t CO_fifo_readI642a(CO_fifo_t *fifo, char *buf, size_t count, bool_t end) {
int64_t n;
if (fifo != NULL && count >= 23 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (char *)&n, sizeof(n), NULL);
return sprintf(buf, "%"PRId64, CO_SWAP_64(n));
}
else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t CO_fifo_readR322a(CO_fifo_t *fifo, char *buf, size_t count, bool_t end) {
float32_t n;
if (fifo != NULL && count >= 20 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (char *)&n, sizeof(n), NULL);
return sprintf(buf, "%g", CO_SWAP_32(n));
}
else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t CO_fifo_readR642a(CO_fifo_t *fifo, char *buf, size_t count, bool_t end) {
float64_t n;
if (fifo != NULL && count >= 30 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (char *)&n, sizeof(n), NULL);
return sprintf(buf, "%g", CO_SWAP_64(n));
}
else {
return CO_fifo_readHex2a(fifo, buf, count, end);
}
}
size_t CO_fifo_readHex2a(CO_fifo_t *fifo, char *buf, size_t count, bool_t end) {
(void)end; /* unused */
size_t len = 0;
if (fifo != NULL && count > 3) {
/* Very first write is without leading space */
if (!fifo->started) {
char c;
if(CO_fifo_getc(fifo, &c)) {
len = sprintf(&buf[0], "%02"PRIX8, (uint8_t)c);
fifo->started = true;
}
}
while ((len + 3) < count) {
char c;
if(!CO_fifo_getc(fifo, &c)) {
break;
}
len += sprintf(&buf[len], " %02"PRIX8, (uint8_t)c);
}
}
return len;
}
size_t CO_fifo_readVs2a(CO_fifo_t *fifo, char *buf, size_t count, bool_t end) {
size_t len = 0;
if (fifo != NULL && count > 3) {
/* Start with '"' */
if (!fifo->started) {
buf[len++] = '"';
fifo->started = true;
}
while ((len + 2) < count) {
char c;
if(!CO_fifo_getc(fifo, &c)) {
if (end) {
buf[len++] = '"';
}
break;
}
if (c == '"') {
buf[len++] = '"';
}
buf[len++] = c;
}
}
return len;
}
/******************************************************************************/
size_t CO_fifo_cpyTok2U8(CO_fifo_t *dest, CO_fifo_t *src, CO_fifo_st *status) {
char buf[15];
char closed = -1;
bool_t err = 0;
size_t nWr = 0;
size_t nRd = CO_fifo_readToken(src, buf, sizeof(buf), &closed, &err);
CO_fifo_st st = (uint8_t)closed;
if (nRd == 0 || err) st |= CO_fifo_st_errTok;
else {
char *sRet;
uint32_t u32 = strtoul(buf, &sRet, 0);
if (sRet != strchr(buf, '\0') || u32 > UINT8_MAX) st |= CO_fifo_st_errVal;
else {
uint8_t num = (uint8_t) u32;
nWr = CO_fifo_write(dest, (const char *)&num, sizeof(num), NULL);
if (nWr != sizeof(num)) st |= CO_fifo_st_errBuf;
}
}
if (status != NULL) *status = st;
return nWr;
}
size_t CO_fifo_cpyTok2U16(CO_fifo_t *dest, CO_fifo_t *src, CO_fifo_st *status) {
char buf[15];
char closed = -1;
bool_t err = 0;
size_t nWr = 0;
size_t nRd = CO_fifo_readToken(src, buf, sizeof(buf), &closed, &err);
CO_fifo_st st = (uint8_t)closed;
if (nRd == 0 || err) st |= CO_fifo_st_errTok;
else {
char *sRet;
uint32_t u32 = strtoul(buf, &sRet, 0);
if (sRet != strchr(buf, '\0') || u32 > UINT16_MAX) st |= CO_fifo_st_errVal;
else {
uint16_t num = CO_SWAP_16((uint16_t) u32);
nWr = CO_fifo_write(dest, (const char *)&num, sizeof(num), NULL);
if (nWr != sizeof(num)) st |= CO_fifo_st_errBuf;
}
}
if (status != NULL) *status = st;
return nWr;
}
size_t CO_fifo_cpyTok2U32(CO_fifo_t *dest, CO_fifo_t *src, CO_fifo_st *status) {
char buf[15];
char closed = -1;
bool_t err = 0;
size_t nWr = 0;
size_t nRd = CO_fifo_readToken(src, buf, sizeof(buf), &closed, &err);
CO_fifo_st st = (uint8_t)closed;
if (nRd == 0 || err) st |= CO_fifo_st_errTok;
else {
char *sRet;
uint32_t u32 = strtoul(buf, &sRet, 0);
if (sRet != strchr(buf, '\0')) st |= CO_fifo_st_errVal;
else {
uint32_t num = CO_SWAP_32(u32);
nWr = CO_fifo_write(dest, (const char *)&num, sizeof(num), NULL);
if (nWr != sizeof(num)) st |= CO_fifo_st_errBuf;
}
}
if (status != NULL) *status = st;
return nWr;
}
size_t CO_fifo_cpyTok2U64(CO_fifo_t *dest, CO_fifo_t *src, CO_fifo_st *status) {
char buf[25];
char closed = -1;
bool_t err = 0;
size_t nWr = 0;
size_t nRd = CO_fifo_readToken(src, buf, sizeof(buf), &closed, &err);
CO_fifo_st st = (uint8_t)closed;
if (nRd == 0 || err) st |= CO_fifo_st_errTok;
else {
char *sRet;
uint64_t u64 = strtoull(buf, &sRet, 0);
if (sRet != strchr(buf, '\0')) st |= CO_fifo_st_errVal;
else {
uint64_t num = CO_SWAP_64(u64);
nWr = CO_fifo_write(dest, (const char *)&num, sizeof(num), NULL);
if (nWr != sizeof(num)) st |= CO_fifo_st_errBuf;
}
}
if (status != NULL) *status = (uint8_t) st;
return nWr;
}
size_t CO_fifo_cpyTok2I8(CO_fifo_t *dest, CO_fifo_t *src, CO_fifo_st *status) {
char buf[15];
char closed = -1;
bool_t err = 0;
size_t nWr = 0;
size_t nRd = CO_fifo_readToken(src, buf, sizeof(buf), &closed, &err);
CO_fifo_st st = (uint8_t)closed;
if (nRd == 0 || err) st |= CO_fifo_st_errTok;
else {
char *sRet;
int32_t i32 = strtol(buf, &sRet, 0);
if (sRet != strchr(buf, '\0') || i32 < INT8_MIN || i32 > INT8_MAX) {
st |= CO_fifo_st_errVal;
} else {
int8_t num = (int8_t) i32;
nWr = CO_fifo_write(dest, (const char *)&num, sizeof(num), NULL);
if (nWr != sizeof(num)) st |= CO_fifo_st_errBuf;
}
}
if (status != NULL) *status = st;
return nWr;
}
size_t CO_fifo_cpyTok2I16(CO_fifo_t *dest, CO_fifo_t *src, CO_fifo_st *status) {
char buf[15];
char closed = -1;
bool_t err = 0;
size_t nWr = 0;
size_t nRd = CO_fifo_readToken(src, buf, sizeof(buf), &closed, &err);
CO_fifo_st st = (uint8_t)closed;
if (nRd == 0 || err) st |= CO_fifo_st_errTok;
else {
char *sRet;
int32_t i32 = strtol(buf, &sRet, 0);
if (sRet != strchr(buf, '\0') || i32 < INT16_MIN || i32 > INT16_MAX) {
st |= CO_fifo_st_errVal;
} else {
int16_t num = CO_SWAP_16((int16_t) i32);
nWr = CO_fifo_write(dest, (const char *)&num, sizeof(num), NULL);
if (nWr != sizeof(num)) st |= CO_fifo_st_errBuf;
}
}
if (status != NULL) *status = st;
return nWr;
}
size_t CO_fifo_cpyTok2I32(CO_fifo_t *dest, CO_fifo_t *src, CO_fifo_st *status) {
char buf[15];
char closed = -1;
bool_t err = 0;
size_t nWr = 0;
size_t nRd = CO_fifo_readToken(src, buf, sizeof(buf), &closed, &err);
CO_fifo_st st = (uint8_t)closed;
if (nRd == 0 || err) st |= CO_fifo_st_errTok;
else {
char *sRet;
int32_t i32 = strtol(buf, &sRet, 0);
if (sRet != strchr(buf, '\0')) st |= CO_fifo_st_errVal;
else {
int32_t num = CO_SWAP_32(i32);
nWr = CO_fifo_write(dest, (const char *)&num, sizeof(num), NULL);
if (nWr != sizeof(num)) st |= CO_fifo_st_errBuf;
}
}
if (status != NULL) *status = st;
return nWr;
}
size_t CO_fifo_cpyTok2I64(CO_fifo_t *dest, CO_fifo_t *src, CO_fifo_st *status) {
char buf[25];
char closed = -1;
bool_t err = 0;
size_t nWr = 0;
size_t nRd = CO_fifo_readToken(src, buf, sizeof(buf), &closed, &err);
CO_fifo_st st = (uint8_t)closed;
if (nRd == 0 || err) st |= CO_fifo_st_errTok;
else {
char *sRet;
int64_t i64 = strtoll(buf, &sRet, 0);
if (sRet != strchr(buf, '\0')) st |= CO_fifo_st_errVal;
else {
int64_t num = CO_SWAP_64(i64);
nWr = CO_fifo_write(dest, (const char *)&num, sizeof(num), NULL);
if (nWr != sizeof(num)) st |= CO_fifo_st_errBuf;
}
}
if (status != NULL) *status = (uint8_t) st;
return nWr;
}
size_t CO_fifo_cpyTok2R32(CO_fifo_t *dest, CO_fifo_t *src, CO_fifo_st *status) {
char buf[30];
char closed = -1;
bool_t err = 0;
size_t nWr = 0;
size_t nRd = CO_fifo_readToken(src, buf, sizeof(buf), &closed, &err);
CO_fifo_st st = (uint8_t)closed;
if (nRd == 0 || err) st |= CO_fifo_st_errTok;
else {
char *sRet;
float32_t f32 = strtof(buf, &sRet);
if (sRet != strchr(buf, '\0')) st |= CO_fifo_st_errVal;
else {
float32_t num = CO_SWAP_32(f32);
nWr = CO_fifo_write(dest, (const char *)&num, sizeof(num), NULL);
if (nWr != sizeof(num)) st |= CO_fifo_st_errBuf;
}
}
if (status != NULL) *status = st;
return nWr;
}
size_t CO_fifo_cpyTok2R64(CO_fifo_t *dest, CO_fifo_t *src, CO_fifo_st *status) {
char buf[40];
char closed = -1;
bool_t err = 0;
size_t nWr = 0;
size_t nRd = CO_fifo_readToken(src, buf, sizeof(buf), &closed, &err);
CO_fifo_st st = (uint8_t)closed;
if (nRd == 0 || err) st |= CO_fifo_st_errTok;
else {
char *sRet;
float64_t f64 = strtof(buf, &sRet);
if (sRet != strchr(buf, '\0')) st |= CO_fifo_st_errVal;
else {
float64_t num = CO_SWAP_64(f64);
nWr = CO_fifo_write(dest, (const char *)&num, sizeof(num), NULL);
if (nWr != sizeof(num)) st |= CO_fifo_st_errBuf;
}
}
if (status != NULL) *status = st;
return nWr;
}
size_t CO_fifo_cpyTok2Hex(CO_fifo_t *dest, CO_fifo_t *src, CO_fifo_st *status) {
size_t destSpace, destSpaceStart;
bool_t finished = false;
CO_fifo_st st = 0;
if (dest == NULL || src == NULL) {
return 0;
}
/* get free space of the dest fifo */
destSpaceStart = destSpace = CO_fifo_getSpace(dest);
/* repeat until destination space available and no error and not finished
* and source characters available */
while (destSpace > 0 && (st & CO_fifo_st_errMask) == 0 && !finished) {
char c;
if (!CO_fifo_getc(src, &c)) {
break;
}
if (dest->started == false) {
/* search for first of two hex digits in token */
if (isxdigit(c) != 0) {
/* first hex digit is known */
dest->aux = c;
dest->started = true;
}
else if (c == DELIM_COMMAND) {
/* newline found, finish */
st |= CO_fifo_st_closed;
finished = true;
}
else if (c == DELIM_COMMENT) {
/* comment found, clear line and finish */
while (CO_fifo_getc(src, &c)) {
if (c == DELIM_COMMAND) {
st |= CO_fifo_st_closed;
break;
}
}
finished = true;
}
else if (isgraph(c) != 0) {
/* printable character, not hex digit, error */
st |= CO_fifo_st_errTok;
}
/* else just skip empty space */
}
else {
/* one hex digit is known, what is next */
if (isxdigit(c) != 0) {
/* two hex digits are known */
char s[3];
int32_t num;
s[0] = (char) dest->aux; s[1] = c, s[2] = 0;
num = strtol(s, NULL, 16);
/* copy the character */
CO_fifo_putc(dest, (char) num);
destSpace--;
}
else if (isgraph(c) != 0 && c != DELIM_COMMENT) {
/* printable character, not hex digit, error */
st |= CO_fifo_st_errTok;
}
else {
/* this is space or comment, single hex digit is known */
char s[2];
int32_t num;
s[0] = (char) dest->aux; s[1] = 0;
num = strtol(s, NULL, 16);
/* copy the character */
CO_fifo_putc(dest, (char) num);
destSpace--;
if (c == DELIM_COMMAND) {
/* newline found, finish */
st |= CO_fifo_st_closed;
finished = true;
}
else if (c == DELIM_COMMENT) {
/* comment found, clear line and finish */
while (CO_fifo_getc(src, &c)) {
if (c == DELIM_COMMAND) {
st |= CO_fifo_st_closed;
break;
}
}
finished = true;
}
}
dest->started = false;
}
}
if (!finished) {
st |= CO_fifo_st_partial;
}
if (status != NULL) *status = st;
return destSpaceStart - destSpace;
}
size_t CO_fifo_cpyTok2Vs(CO_fifo_t *dest, CO_fifo_t *src, CO_fifo_st *status) {
size_t destSpace, destSpaceStart;
bool_t finished = false;
CO_fifo_st st = 0;
if (dest == NULL || src == NULL) {
return 0;
}
/* get free space of the dest fifo */
destSpaceStart = destSpace = CO_fifo_getSpace(dest);
/* is this the first write into dest? */
if (!dest->started) {
/* aux variable is used as state here */
dest->aux = 0;
dest->started = true;
}
/* repeat until destination space available and no error and not finished
* and source characters available */
while (destSpace > 0 && (st & CO_fifo_st_errMask) == 0 && !finished) {
char c;
if (!CO_fifo_getc(src, &c)) {
break;
}
switch (dest->aux) {
case 0: /* beginning of the string, first write into dest */
if (isgraph(c) == 0 || c == DELIM_COMMENT) {
if (CO_fifo_trimSpaces(src)) {
/* newline found without string, this is an error */
st |= CO_fifo_st_errTok;
}
}
else if (c == '"') {
/* Indicated beginning of the string, skip this character. */
dest->aux = 1;
}
else {
/* this must be a single word string without '"' */
/* copy the character */
CO_fifo_putc(dest, c);
destSpace--;
dest->aux = 2;
}
break;
case 1: /* inside string, quoted string */
case 2: /* inside string, single word, no quotes */
if (c == '"') {
/* double qoute found, this may be end of the string or escaped
* double quote (with two double quotes) */
dest->aux += 2;
}
else if (isgraph(c) == 0 && dest->aux == 2) {
/* end of single word string */
if (c == DELIM_COMMAND) {
st |= CO_fifo_st_closed;
}
else if (CO_fifo_trimSpaces(src)) {
st |= CO_fifo_st_closed;
}
finished = true;
}
else if (c == DELIM_COMMAND) {
/* no closing quote, error */
st |= CO_fifo_st_errTok;
}
else {
/* copy the character */
CO_fifo_putc(dest, c);
destSpace--;
}
break;
case 3: /* previous was double quote, parsing quoted string */
case 4: /* previous was double quote, parsing no quoted word */
if (c == '"') {
/* escaped double quote, copy the character and continue */
CO_fifo_putc(dest, c);
destSpace--;
dest->aux -= 2;
}
else {
/* previous character was closing double quote */
if (dest->aux == 4) {
/* no opening double quote, syntax error */
st |= CO_fifo_st_errTok;
}
else {
if (isgraph(c) == 0) {
/* string finished */
if (c == DELIM_COMMAND) {
st |= CO_fifo_st_closed;
}
else if (CO_fifo_trimSpaces(src)) {
st |= CO_fifo_st_closed;
}
finished = true;
}
else {
/* space must follow closing double quote, error */
st |= CO_fifo_st_errTok;
}
}
}
break;
default: /* internal error */
st |= CO_fifo_st_errInt;
break;
}
}
if (!finished) {
st |= CO_fifo_st_partial;
}
if (status != NULL) *status = st;
return destSpaceStart - destSpace;
}
#endif /* CO_CONFIG_FIFO_ASCII_COMMANDS == 1 */
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