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bugfix: indexOf() returns -1 if string not found

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... so we must use `int` instead of `unsigned`
This commit is contained in:
Frank 2025-01-07 20:18:42 +01:00 committed by Damian Schneider
parent 703f84e5e1
commit 7be868db12
1 changed files with 4 additions and 4 deletions
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8
wled00/util.cpp
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@ -265,16 +265,16 @@ uint8_t extractModeSlider(uint8_t mode, uint8_t slider, char *dest, uint8_t maxL
if (mode < strip.getModeCount()) {
String lineBuffer = FPSTR(strip.getModeData(mode));
if (lineBuffer.length() > 0) {
unsigned start = lineBuffer.indexOf('@');
unsigned stop = lineBuffer.indexOf(';', start);
int start = lineBuffer.indexOf('@'); // String::indexOf() returns an int, not an unsigned; -1 means "not found"
int stop = lineBuffer.indexOf(';', start);
if (start>0 && stop>0) {
String names = lineBuffer.substring(start, stop); // include @
unsigned nameBegin = 1, nameEnd, nameDefault;
int nameBegin = 1, nameEnd, nameDefault;
if (slider < 10) {
for (size_t i=0; i<=slider; i++) {
const char *tmpstr;
dest[0] = '\0'; //clear dest buffer
if (nameBegin == 0) break; // there are no more names
if (nameBegin <= 0) break; // there are no more names
nameEnd = names.indexOf(',', nameBegin);
if (i == slider) {
nameDefault = names.indexOf('=', nameBegin); // find default value