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use static initialization for output string in RenderCurrentFolder

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The dynamic sized variable outputString may not be properly initialized.
Second issue, we fill the line for directories beyond fileNameLength, so
the initialization is not always sufficient.

We now initialize outputString statically with the maximum printable
size which should resolve both.

Also clean up some variable declarations.
This commit is contained in:
Stefan Kalscheuer
2023-06-24 12:21:56 +02:00
parent 4d5ba3899b
commit a9c018f18c
1 changed files with 15 additions and 19 deletions
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34
Marlin/src/lcd/extui/knutwurst/anycubic_touchscreen.cpp
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@@ -830,7 +830,6 @@ void AnycubicTouchscreenClass::RenderSpecialMenu(uint16_t selectedNumber) {
void AnycubicTouchscreenClass::RenderCurrentFolder(uint16_t selectedNumber) {
FileList currentFileList;
uint16_t count = selectedNumber;
uint16_t max_files;
uint16_t filesOnSDCard = currentFileList.count();
@@ -850,7 +849,7 @@ void AnycubicTouchscreenClass::RenderCurrentFolder(uint16_t selectedNumber) {
selectedNumber = 0;
}
for (count = selectedNumber; count <= max_files; count++) {
for (uint16_t count = selectedNumber; count <= max_files; count++) {
if (count == 0) { // Special Entry
if (currentFileList.isAtRootDir()) {
SENDLINE_PGM(SM_SPECIAL_MENU_S);
@@ -876,25 +875,22 @@ void AnycubicTouchscreenClass::RenderCurrentFolder(uint16_t selectedNumber) {
SERIAL_ECHOLN(currentFileList.filename());
#endif
const char* fileName = currentFileList.filename();
int fileNameLen = strlen(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;
}
char outputString[MAX_PRINTABLE_FILENAME_LEN] = {'\0'};
#else
char outputString[fileNameLen] = {'\0'};
#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;
}
#endif
// Bugfix for non-printable special characters
// which are now replaced by underscores.
for (unsigned char i = 0; i <= fileNameLen; i++) {
// 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];
} else {