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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 <[url]https://github.com/CANopenNode/CANopenNode>.[/url]
* For more information on CANopen see <[url]http://www.can-cia.org/>.[/url]
*
* 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
*
* [url]http://www.apache.org/licenses/LICENSE-2.0[/url]
*
* 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"
#if (CO_CONFIG_FIFO) & CO_CONFIG_FIFO_ENABLE
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#include "crc16-ccitt.h"
#if (CO_CONFIG_FIFO) & CO_CONFIG_FIFO_ASCII_COMMANDS
#include <stdio.h>
#include <inttypes.h>
/* Non-graphical character for command delimiter */
#define DELIM_COMMAND ((uint8_t)'\n')
/* Graphical character for comment delimiter */
#define DELIM_COMMENT ((uint8_t)'#')
/* Graphical character for double quotes */
#define DELIM_DQUOTE ((uint8_t)'"')
#endif /* (CO_CONFIG_FIFO) & CO_CONFIG_FIFO_ASCII_COMMANDS */
/* verify configuration */
#if (CO_CONFIG_FIFO) & CO_CONFIG_FIFO_CRC16_CCITT
#if !((CO_CONFIG_CRC16) & CO_CONFIG_CRC16_ENABLE)
#error CO_CONFIG_CRC16_ENABLE must be enabled.
#endif
#endif
/******************************************************************************/
void CO_fifo_init(CO_fifo_t *fifo, uint8_t *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;
}
/* 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 uint8_t *buf,
size_t count,
uint16_t *crc)
{
size_t i;
uint8_t *bufDest;
if (fifo == NULL || fifo->buf == 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) & CO_CONFIG_FIFO_CRC16_CCITT
if (crc != NULL) {
crc16_ccitt_single(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, uint8_t *buf, size_t count, bool_t *eof) {
size_t i;
const uint8_t *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 uint8_t 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) & CO_CONFIG_FIFO_ASCII_COMMANDS
/* is delimiter? */
if (eof != NULL && c == DELIM_COMMAND) {
*eof = true;
break;
}
#endif
}
return count - i;
}
#if (CO_CONFIG_FIFO) & CO_CONFIG_FIFO_ALT_READ
/******************************************************************************/
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 uint8_t *bufSrc = &fifo->buf[fifo->readPtr];
while (fifo->readPtr != fifo->altReadPtr) {
#if (CO_CONFIG_FIFO) & CO_CONFIG_FIFO_CRC16_CCITT
crc16_ccitt_single(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, uint8_t *buf, size_t count) {
size_t i;
const uint8_t *bufSrc;
bufSrc = &fifo->buf[fifo->altReadPtr];
for (i = count; i > 0; i--) {
const uint8_t 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) & CO_CONFIG_FIFO_ALT_READ */
#if (CO_CONFIG_FIFO) & CO_CONFIG_FIFO_ASCII_COMMANDS
/******************************************************************************/
bool_t CO_fifo_CommSearch(CO_fifo_t *fifo, bool_t clear) {
bool_t newCommand = false;
size_t count;
uint8_t *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 = (uint8_t *)memchr((const void *)&fifo->buf[fifo->readPtr],
(int)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 = (uint8_t *)memchr((const void *)&fifo->buf[0],
(int)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 = (size_t)(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 *insideComment) {
bool_t delimCommandFound = false;
if (fifo != NULL && insideComment != NULL) {
while (fifo->readPtr != fifo->writePtr) {
uint8_t c = fifo->buf[fifo->readPtr];
if (c == DELIM_COMMENT) {
*insideComment = true;
}
else if (isgraph((int)c) != 0 && !(*insideComment)) {
break;
}
if (++fifo->readPtr == fifo->bufSize) {
fifo->readPtr = 0;
}
if (c == DELIM_COMMAND) {
delimCommandFound = true;
*insideComment = false;
break;
}
}
}
return delimCommandFound;
}
/******************************************************************************/
size_t CO_fifo_readToken(CO_fifo_t *fifo,
char *buf,
size_t count,
int8_t *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;
uint8_t step = 0;
size_t ptr = fifo->readPtr; /* current pointer (integer, 0 based) */
uint8_t *c = &fifo->buf[ptr]; /* current character */
do {
switch (step) {
case 0: /* skip leading empty characters, stop on delimiter */
if (isgraph((int)*c) != 0) {
if (*c == DELIM_COMMENT) {
delimCommentFound = true;
} else {
buf[tokenSize++] = (char)*c;
step++;
}
}
else if (*c == DELIM_COMMAND) {
delimCommandFound = true;
}
break;
case 1: /* search for end of the token */
if (isgraph((int)*c) != 0) {
if (*c == DELIM_COMMENT) {
delimCommentFound = true;
} else if (tokenSize < count) {
buf[tokenSize++] = (char)*c;
}
}
else {
if (*c == DELIM_COMMAND) {
delimCommandFound = true;
}
step++;
}
break;
case 2: /* skip trailing empty characters */
if (isgraph((int)*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 empty*/
if (tokenSize == count) {
tokenSize = 0;
}
/* write string terminator character */
if (buf != NULL && count > tokenSize) {
buf[tokenSize] = '\0';
}
return tokenSize;
}
#endif /* (CO_CONFIG_FIFO) & CO_CONFIG_FIFO_ASCII_COMMANDS */
#if (CO_CONFIG_FIFO) & CO_CONFIG_FIFO_ASCII_DATATYPES
/******************************************************************************/
/* Tables for mime-base64 encoding, as specified in RFC 2045, (without CR-LF,
* but one long string). Base64 is used for encoding binary data into easy
* transferable printable characters. In general, each three bytes of binary
* data are translated into four characters, where characters are selected from
* 64 characters long table. See [url]https://en.wikipedia.org/wiki/Base64[/url] */
static const char base64EncTable[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
static const uint8_t base64DecTable[] = {
255,255,255,255,255,255,255,255,255,103,101,255,255,102,255,255,
255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,
103,255,255,255,255,255,255,255,255,255,255, 62,255,255,255, 63,
52, 53, 54, 55, 56, 57, 58, 59, 60, 61,255,255,255,100,255,255,
255, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,255,255,255,255,255,
255, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51,255,255,255,255,255};
size_t CO_fifo_readU82a(CO_fifo_t *fifo, char *buf, size_t count, bool_t end) {
uint8_t n=0;
if (fifo != NULL && count >= 6 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, &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=0;
if (fifo != NULL && count >= 8 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (uint8_t *)&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=0;
if (fifo != NULL && count >= 12 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (uint8_t *)&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=0;
if (fifo != NULL && count >= 20 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (uint8_t *)&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=0;
if (fifo != NULL && count >= 6 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (uint8_t *)&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=0;
if (fifo != NULL && count >= 8 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (uint8_t *)&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=0;
if (fifo != NULL && count >= 12 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (uint8_t *)&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=0;
if (fifo != NULL && count >= 20 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (uint8_t *)&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=0;
if (fifo != NULL && count >= 6 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (uint8_t *)&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=0;
if (fifo != NULL && count >= 8 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (uint8_t *)&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=0;
if (fifo != NULL && count >= 13 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (uint8_t *)&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=0;
if (fifo != NULL && count >= 23 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (uint8_t *)&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=0;
if (fifo != NULL && count >= 20 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (uint8_t *)&n, sizeof(n), NULL);
return sprintf(buf, "%g", (double)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=0;
if (fifo != NULL && count >= 30 && CO_fifo_getOccupied(fifo) == sizeof(n)) {
CO_fifo_read(fifo, (uint8_t *)&n, sizeof(n), NULL);
return sprintf(buf, "%g", (double)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) {
uint8_t c;
if(CO_fifo_getc(fifo, &c)) {
len = sprintf(&buf[0], "%02"PRIX8, c);
fifo->started = true;
}
}
while ((len + 3) < count) {
uint8_t c;
if(!CO_fifo_getc(fifo, &c)) {
break;
}
len += sprintf(&buf[len], " %02"PRIX8, 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) {
uint8_t c;
if(!CO_fifo_getc(fifo, &c)) {
if (end) {
buf[len++] = '"';
}
break;
}
else if (c != 0 && c != (uint8_t)'\r') {
/* skip null and CR inside string */
buf[len++] = (char)c;
if (c == DELIM_DQUOTE) {
buf[len++] = '"';
}
}
}
}
return len;
}
size_t CO_fifo_readB642a(CO_fifo_t *fifo, char *buf, size_t count, bool_t end) {
/* mime-base64 encoding, see description above base64EncTable */
size_t len = 0;
if (fifo != NULL && count >= 4) {
uint8_t step;
uint16_t word;
if (!fifo->started) {
fifo->started = true;
step = 0;
word = 0;
}
else {
/* get memorized variables from previous function calls */
step = (uint8_t)(fifo->aux >> 16);
word = (uint16_t)fifo->aux;
}
while ((len + 3) <= count) {
uint8_t c;
if(!CO_fifo_getc(fifo, &c)) {
/* buffer is empty, is also SDO communication finished? */
if (end) {
/* add padding if necessary */
switch (step) {
case 1:
buf[len++] = base64EncTable[(word >> 4) & 0x3F];
buf[len++] = '=';
buf[len++] = '=';
break;
case 2:
buf[len++] = base64EncTable[(word >> 6) & 0x3F];
buf[len++] = '=';
break;
}
}
break;
}
word |= c;
switch (step++) {
case 0:
buf[len++] = base64EncTable[(word >> 2) & 0x3F];
break;
case 1:
buf[len++] = base64EncTable[(word >> 4) & 0x3F];
break;
default:
buf[len++] = base64EncTable[(word >> 6) & 0x3F];
buf[len++] = base64EncTable[word & 0x3F];
step = 0;
break;
}
word <<= 8;
}
/* memorize variables for next iteration */
fifo->aux = (uint32_t)step << 16 | word;
}
return len;
}
/******************************************************************************/
size_t CO_fifo_cpyTok2U8(CO_fifo_t *dest, CO_fifo_t *src, CO_fifo_st *status) {
char buf[15];
int8_t 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, &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];
int8_t 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, (uint8_t *)&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];
int8_t 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, (uint8_t *)&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];
int8_t 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, (uint8_t *)&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];
int8_t 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, (uint8_t *)&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];
int8_t 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, (uint8_t *)&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];
int8_t 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, (uint8_t *)&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];
int8_t 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, (uint8_t *)&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];
int8_t 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, (uint8_t *)&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];
int8_t 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, (uint8_t *)&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;
uint8_t step;
uint8_t firstChar;
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) {
bool_t insideComment = false;
if (CO_fifo_trimSpaces(src, &insideComment) || insideComment) {
/* command delimiter found without string, this is an error */
st |= CO_fifo_st_errTok;
}
dest->started = true;
step = 0;
firstChar = 0;
}
else {
/* get memorized variables from previous function calls */
step = (uint8_t)(dest->aux >> 8);
firstChar = (uint8_t)(dest->aux & 0xFF);
}
/* 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) {
uint8_t c;
if (!CO_fifo_getc(src, &c)) {
break;
}
if (step == 6) {
/* command is inside comment, waiting for command delimiter */
bool_t insideComment = true;
if (c == DELIM_COMMAND || CO_fifo_trimSpaces(src, &insideComment)) {
st |= CO_fifo_st_closed;
finished = true;
}
continue;
}
if (isxdigit((int)c) != 0) {
/* first or second hex digit */
if (step == 0) {
firstChar = c;
step = 1;
}
else {
/* write the byte */
uint8_t s[3];
int32_t num;
s[0] = firstChar; s[1] = c; s[2] = 0;
num = strtol((char *)&s[0], NULL, 16);
CO_fifo_putc(dest, (uint8_t) num);
destSpace--;
step = 0;
}
}
else if (isgraph((int)c) != 0) {
/* printable character, not hex digit */
if (c == DELIM_COMMENT) /* comment start */
step = 6;
else /* syntax error */
st |= CO_fifo_st_errTok;
}
else {
/* this is space or delimiter */
if (step == 1) {
/* write the byte */
uint8_t s[2];
int32_t num;
s[0] = firstChar; s[1] = 0;
num = strtol((char *)&s[0], NULL, 16);
CO_fifo_putc(dest, (uint8_t) num);
destSpace--;
step = 0;
}
bool_t insideComment = false;
if (c == DELIM_COMMAND || CO_fifo_trimSpaces(src, &insideComment)) {
/* newline found, finish */
st |= CO_fifo_st_closed;
finished = true;
}
else if (insideComment) {
step = 6;
}
}
} /* while ... */
if (!finished) {
st |= CO_fifo_st_partial;
/* memorize variables for next iteration */
dest->aux = (uint32_t)step << 8 | firstChar;
}
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;
uint8_t step;
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) {
bool_t insideComment = false;
if (CO_fifo_trimSpaces(src, &insideComment) || insideComment) {
/* command delimiter found without string, this is an error */
st |= CO_fifo_st_errTok;
}
dest->started = true;
step = 0;
}
else {
/* get memorized variables from previous function calls */
step = (uint8_t)dest->aux;
}
/* 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) {
uint8_t c;
if (!CO_fifo_getc(src, &c)) {
break;
}
switch (step) {
case 0: /* beginning of the string, first write into dest */
if (c == DELIM_DQUOTE) {
/* Indicated beginning of the string, skip this character. */
step = 1;
}
else {
/* this must be a single word string without '"' */
/* copy the character */
CO_fifo_putc(dest, c);
destSpace--;
step = 2;
}
break;
case 1: /* inside string, quoted string */
case 2: /* inside string, single word, no quotes */
if (c == DELIM_DQUOTE) {
/* double quote found, this may be end of the string or escaped
* double quote (with two double quotes) */
step += 2;
}
else if (isgraph((int)c) == 0 && step == 2) {
/* end of single word string */
bool_t insideComment = false;
if (c == DELIM_COMMAND
|| CO_fifo_trimSpaces(src, &insideComment)
) {
st |= CO_fifo_st_closed;
finished = true;
}
else {
step = insideComment ? 6 : 5;
}
}
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 == DELIM_DQUOTE) {
/* escaped double quote, copy the character and continue */
CO_fifo_putc(dest, c);
destSpace--;
step -= 2;
}
else {
/* previous character was closing double quote */
if (step == 4) {
/* no opening double quote, syntax error */
st |= CO_fifo_st_errTok;
}
else {
if (isgraph((int)c) == 0) {
/* end of quoted string */
bool_t insideComment = false;
if (c == DELIM_COMMAND
|| CO_fifo_trimSpaces(src, &insideComment)
) {
st |= CO_fifo_st_closed;
finished = true;
}
else {
step = insideComment ? 6 : 5;
}
}
else {
/* space must follow closing double quote, error */
st |= CO_fifo_st_errTok;
}
}
}
break;
case 5: { /* String token is finished, waiting for command delimiter */
bool_t insideComment = false;
if (c == DELIM_COMMAND || CO_fifo_trimSpaces(src, &insideComment)) {
st |= CO_fifo_st_closed;
finished = true;
}
else if (insideComment) {
step = 6;
}
else if (isgraph((int)c) != 0) {
if (c == DELIM_COMMENT) /* comment start */
step = 6;
else /* syntax error */
st |= CO_fifo_st_errTok;
}
break;
}
case 6: { /* String token is finished, waiting for command delimiter */
bool_t insideComment = true;
if (c == DELIM_COMMAND || CO_fifo_trimSpaces(src, &insideComment)) {
st |= CO_fifo_st_closed;
finished = true;
}
break;
}
default: /* internal error */
st |= CO_fifo_st_errInt;
break;
}
}
if (!finished) {
st |= CO_fifo_st_partial;
/* memorize variables for next iteration */
dest->aux = step;
}
if (status != NULL) *status = st;
return destSpaceStart - destSpace;
}
size_t CO_fifo_cpyTok2B64(CO_fifo_t *dest, CO_fifo_t *src, CO_fifo_st *status) {
/* mime-base64 decoding, see description above base64EncTable */
size_t destSpace, destSpaceStart;
bool_t finished = false;
uint8_t step;
uint32_t dword;
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) {
bool_t insideComment = false;
if (CO_fifo_trimSpaces(src, &insideComment) || insideComment) {
/* command delimiter found without string, this is an error */
st |= CO_fifo_st_errTok;
}
dest->started = true;
step = 0;
dword = 0;
}
else {
/* get memorized variables from previous function calls */
step = (uint8_t)(dest->aux >> 24);
dword = dest->aux & 0xFFFFFF;
}
/* repeat until destination space available and no error and not finished
* and source characters available */
while (destSpace >= 3 && (st & CO_fifo_st_errMask) == 0 && !finished) {
uint8_t c;
if (!CO_fifo_getc(src, &c)) {
break;
}
if (step >= 5) {
/* String token is finished, waiting for command delimiter */
bool_t insideComment = step > 5;
if (c == DELIM_COMMAND || CO_fifo_trimSpaces(src, &insideComment)) {
st |= CO_fifo_st_closed;
finished = true;
}
else if (insideComment) {
step = 6;
}
else if (isgraph((int)c) != 0 && c != (uint8_t)'=') {
if (c == DELIM_COMMENT) /* comment start */
step = 6;
else /* syntax error */
st |= CO_fifo_st_errTok;
}
continue;
}
uint8_t code = base64DecTable[c & 0x7F];
if ((c & 0x80) != 0 || (code & 0x80) != 0) {
st |= CO_fifo_st_errTok;
}
else if (code >= 64 /* '=' (pad) or DELIM_COMMAND or space */) {
/* base64 string finished, write remaining bytes */
switch (step) {
case 2:
CO_fifo_putc(dest, (uint8_t)(dword >> 4));
destSpace --;
break;
case 3:
CO_fifo_putc(dest, (uint8_t)(dword >> 10));
CO_fifo_putc(dest, (uint8_t)(dword >> 2));
destSpace -= 2;
break;
}
bool_t insideComment = false;
if (c == DELIM_COMMAND || CO_fifo_trimSpaces(src, &insideComment)) {
st |= CO_fifo_st_closed;
finished = true;
}
else {
step = insideComment ? 6 : 5;
}
}
else {
dword = (dword << 6) | code;
if (step++ == 3) {
CO_fifo_putc(dest, (uint8_t)((dword >> 16) & 0xFF));
CO_fifo_putc(dest, (uint8_t)((dword >> 8) & 0xFF));
CO_fifo_putc(dest, (uint8_t)(dword & 0xFF));
destSpace -= 3;
dword = 0;
step = 0;
}
}
} /* while ... */
if (!finished) {
st |= CO_fifo_st_partial;
/* memorize variables for next iteration */
dest->aux = (uint32_t)step << 24 | (dword & 0xFFFFFF);
}
if (status != NULL) *status = st;
return destSpaceStart - destSpace;
}
#endif /* (CO_CONFIG_FIFO) & CO_CONFIG_FIFO_ASCII_DATATYPES */
#endif /* (CO_CONFIG_FIFO) & CO_CONFIG_FIFO_ENABLE */
发表于 2023-10-12 10:09:39
