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oappend() debug message when buffer is full

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oappend() silently discards strings when the buffer is full, leading to strange effects like half-working UI pages.

The new debug message will help developers to understand what could be wrong.
This commit is contained in:
Frank 2023-08-27 23:01:55 +02:00
parent fc1dd2daac
commit bb45bee7f8
1 changed files with 7 additions and 1 deletions
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8
wled00/util.cpp
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@ -148,8 +148,14 @@ bool oappendi(int i)
bool oappend(const char* txt) bool oappend(const char* txt)
{ {
uint16_t len = strlen(txt); uint16_t len = strlen(txt);
if (olen + len >= SETTINGS_STACK_BUF_SIZE) if (olen + len >= SETTINGS_STACK_BUF_SIZE) {
#ifdef WLED_DEBUG
DEBUG_PRINT(F("oappend() buffer overflow. Cannnot append "));
DEBUG_PRINT(len); DEBUG_PRINT(F(" bytes \t\""));
DEBUG_PRINT(txt); DEBUG_PRINTLN(F("\""));
#endif
return false; // buffer full return false; // buffer full
}
strcpy(obuf + olen, txt); strcpy(obuf + olen, txt);
olen += len; olen += len;
return true; return true;