// Enumerate and possibly display the animated GIF filenames in GIFS directory
int enumerateGIFFiles(const char *directoryName, boolean displayFilenames) {
numberOfFiles = 0;
File directory = SD.open(directoryName);
if (!directory) {
return -1;
}
File file = directory.openNextFile();
while (file) {
if (isAnimationFile(file.name())) {
numberOfFiles++;
if (displayFilenames) {
Serial.println(file.name());
}
}
file.close();
file = directory.openNextFile();
}
file.close();
directory.close();
return numberOfFiles;
}
// Get the full path/filename of the GIF file with specified index
void getGIFFilenameByIndex(const char *directoryName, int index, char *pnBuffer) {
char fname[30];
// Make sure index is in range
if ((index < 0) || (index >= numberOfFiles))
return;
File directory = sd.open(directoryName);
if (!directory)
return;
File file = directory.openNextFile();
while (file && (index >= 0)) {
file.getName(fname, sizeof(fname));
if (isAnimationFile(fname)) {
index--;
// Copy the directory name into the pathname buffer
strcpy(pnBuffer, directoryName);
// Append the filename to the pathname
strcat(pnBuffer, fname);
}
file.close();
file = directory.openNextFile();
}
file.close();
directory.close();
}
// Get the full path/filename of the GIF file with specified index
void getGIFFilenameByIndex(const char *directoryName, int index, char *pnBuffer) {
char* filename;
// Make sure index is in range
if ((index < 0) || (index >= numberOfFiles))
return;
File directory = SD.open(directoryName);
if (!directory)
return;
File file = directory.openNextFile();
while (file && (index >= 0)) {
filename = (char*)file.name();
if (isAnimationFile(file.name())) {
index--;
#if !defined(ESP32)
// Copy the directory name into the pathname buffer - ESP32 SD Library includes the full path name in the filename, so no need to add the directory name
strcpy(pnBuffer, directoryName);
// Append the filename to the pathname
strcat(pnBuffer, filename);
#else
strcpy(pnBuffer, filename);
#endif
}
file.close();
file = directory.openNextFile();
}
file.close();
directory.close();
}
