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refactoring, code more understandable

This commit is contained in:
Robin Müller 2021-09-30 16:49:30 +02:00
parent f76f462022
commit afb472996c
1 changed files with 25 additions and 23 deletions
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48
src/fsfw/globalfunctions/DleEncoder.cpp
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@ -165,11 +165,9 @@ ReturnValue_t DleEncoder::decodeStreamEscaped(const uint8_t *sourceStream, size_
if (sourceStream[encodedIndex++] != STX_CHAR) {
return DECODING_ERROR;
}
while ((encodedIndex < sourceStreamLen - 1)
and (decodedIndex < maxDestStreamlen)
and (sourceStream[encodedIndex] != ETX_CHAR)
and (sourceStream[encodedIndex] != STX_CHAR)) {
if (sourceStream[encodedIndex] == DLE_CHAR) {
while ((encodedIndex < sourceStreamLen) and (decodedIndex < maxDestStreamlen)) {
switch(sourceStream[encodedIndex]) {
case(DLE_CHAR): {
if(encodedIndex + 1 >= sourceStreamLen) {
//reached the end of the sourceStream
*readLen = sourceStreamLen;
@ -197,29 +195,33 @@ ReturnValue_t DleEncoder::decodeStreamEscaped(const uint8_t *sourceStream, size_
}
}
++encodedIndex;
break;
}
else {
destStream[decodedIndex] = sourceStream[encodedIndex];
}
++encodedIndex;
++decodedIndex;
}
if (sourceStream[encodedIndex] != ETX_CHAR) {
if(decodedIndex == maxDestStreamlen) {
//so far we did not find anything wrong here, so let user try again
*readLen = 0;
return STREAM_TOO_SHORT;
}
else {
case(STX_CHAR): {
*readLen = ++encodedIndex;
return DECODING_ERROR;
}
case(ETX_CHAR): {
*readLen = ++encodedIndex;
*decodedLen = decodedIndex;
return RETURN_OK;
}
default: {
destStream[decodedIndex] = sourceStream[encodedIndex];
break;
}
}
++encodedIndex;
++decodedIndex;
}
else {
*readLen = ++encodedIndex;
*decodedLen = decodedIndex;
return RETURN_OK;
if(decodedIndex == maxDestStreamlen) {
//so far we did not find anything wrong here, so let user try again
*readLen = 0;
return STREAM_TOO_SHORT;
} else {
*readLen = encodedIndex;
return DECODING_ERROR;
}
}