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fix Stream's parseFloat() #8785

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merged 1 commit into from
Jan 3, 2023
Merged

fix Stream's parseFloat() #8785

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16 changes: 8 additions & 8 deletions cores/esp8266/Stream.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -58,16 +58,16 @@ int Stream::timedPeek() {

// returns peek of the next digit in the stream or -1 if timeout
// discards non-numeric characters
int Stream::peekNextDigit() {
int Stream::peekNextDigit(bool detectDecimal) {
int c;
while(1) {
c = timedPeek();
if(c < 0)
return c; // timeout
if(c == '-')
return c;
if(c >= '0' && c <= '9')
if( c < 0 || // timeout
c == '-' ||
( c >= '0' && c <= '9' ) ||
( detectDecimal && c == '.' ) ) {
return c;
}
read(); // discard non-numeric
}
}
Expand Down Expand Up @@ -141,7 +141,7 @@ long Stream::parseInt(char skipChar) {
long value = 0;
int c;

c = peekNextDigit();
c = peekNextDigit(false);
// ignore non numeric leading characters
if(c < 0)
return 0; // zero returned if timeout
Expand Down Expand Up @@ -176,7 +176,7 @@ float Stream::parseFloat(char skipChar) {
int c;
float fraction = 1.0f;

c = peekNextDigit();
c = peekNextDigit(true);
// ignore non numeric leading characters
if(c < 0)
return 0; // zero returned if timeout
Expand Down
2 changes: 1 addition & 1 deletion cores/esp8266/Stream.h
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Expand Up @@ -53,7 +53,7 @@ class Stream: public Print {
unsigned long _startMillis; // used for timeout measurement
int timedRead(); // private method to read stream with timeout
int timedPeek(); // private method to peek stream with timeout
int peekNextDigit(); // returns the next numeric digit in the stream or -1 if timeout
int peekNextDigit(bool detectDecimal = false); // returns the next numeric digit in the stream or -1 if timeout

public:
virtual int available() = 0;
Expand Down