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partially revert static outputString in RenderCurrentFolder

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The optimization only applies to targets with DGUS2_TFT set. On other
targets the fixed-size array may be of insufficient size.

However, remove the potentially problematic initialization with a single
nullpointer (empty string), as this will be overwritten in the very next
line anyway.

Fixes: a9c018f18c
This commit is contained in:
Stefan Kalscheuer
2023-06-25 15:42:12 +02:00
parent e169b0e627
commit f10f396cc1
1 changed files with 14 additions and 12 deletions
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26
Marlin/src/lcd/extui/knutwurst/anycubic_touchscreen.cpp
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@@ -874,21 +874,23 @@ void AnycubicTouchscreenClass::RenderCurrentFolder(uint16_t selectedNumber) {
SERIAL_ECHOLN(currentFileList.filename());
#endif
const char* fileName = currentFileList.filename();
const char* fileName = currentFileList.filename();
unsigned int fileNameLen = strlen(fileName);
// Cut off too long filenames.
// They don't fit on the screen anyway.
#if ENABLED(KNUTWURST_DGUS2_TFT)
bool fileNameWasCut = false;
if (fileNameLen >= MAX_PRINTABLE_FILENAME_LEN) {
fileNameWasCut = true;
fileNameLen = MAX_PRINTABLE_FILENAME_LEN;
}
#endif
// Cut off too long filenames.
// They don't fit on the screen anyway.
#if ENABLED(KNUTWURST_DGUS2_TFT)
bool fileNameWasCut = false;
if (fileNameLen >= MAX_PRINTABLE_FILENAME_LEN) {
fileNameWasCut = true;
fileNameLen = MAX_PRINTABLE_FILENAME_LEN;
}
static char outputString[MAX_PRINTABLE_FILENAME_LEN];
#else
char outputString[fileNameLen];
#endif
// Bugfix for non-printable special characters which are now replaced by underscores.
static char outputString[MAX_PRINTABLE_FILENAME_LEN] = {'\0'};
for (unsigned int i = 0; i <= fileNameLen; i++) {
if (isPrintable(fileName[i])) {
outputString[i] = fileName[i];
@@ -929,7 +931,7 @@ void AnycubicTouchscreenClass::RenderCurrentFolder(uint16_t selectedNumber) {
outputString[MAX_PRINTABLE_FILENAME_LEN] = '\0';
}
#else
outputString[fileNameLen] = '\0';
outputString[fileNameLen] = '\0';
#endif