Method ReadDir

Kernel/src/fs/fat32.cpp:173–236

    }

    int Fat32Volume::ReadDir(Fat32Node* node, DirectoryEntry* dirent, uint32_t index){
        unsigned lfnCount = 0;
        unsigned entryCount = 0;

        uint32_t cluster = node->inode;
        int clusterCount = 0;
        
        fat_entry_t* dirEntries = (fat_entry_t*)ReadClusterChain(cluster, &clusterCount);

        fat_entry_t* dirEntry;
        int dirEntryIndex = -1;

        fat_lfn_entry_t** lfnEntries;

        for(unsigned i = 0; i < static_cast<unsigned>(clusterCount) * clusterSizeBytes; i++){
            if(dirEntries[i].filename[0] == 0) continue; // No Directory Entry at index
            else if (dirEntries[i].filename[0] == 0xE5) {
                lfnCount = 0;
                continue; // Unused Entry
            }
            else if (dirEntries[i].attributes == 0x0F) lfnCount++; // Long File Name Entry
            else if (dirEntries[i].attributes & 0x08 /*Volume ID*/){
                lfnCount = 0;
                continue;
            } else {
                if(entryCount == index){
                    dirEntry = &dirEntries[i];
                    dirEntryIndex = i;
                    break;
                }

                entryCount++;
                lfnCount = 0;
            }
        }

        if(dirEntryIndex == -1){
            return 0;
        }

        lfnEntries = (fat_lfn_entry_t**)kmalloc(sizeof(fat_lfn_entry_t*) * lfnCount);

        for(unsigned i = 0; i < lfnCount; i++){
            fat_lfn_entry_t* lfnEntry = (fat_lfn_entry_t*)(&dirEntries[dirEntryIndex -  i - 1]);

            lfnEntries[i] = lfnEntry; 
        }

        if(lfnCount){
            GetLongFilename(dirent->name, lfnEntries, lfnCount);
        } else {
            strncpy(dirent->name, (char*)dirEntry->filename, 8);
            while(strchr(dirent->name, ' ')) *strchr(dirent->name, ' ') = 0; // Remove Spaces
            if(strchr((char*)dirEntry->ext, ' ') != (char*)dirEntry->ext){
                strncpy(dirent->name + strlen(dirent->name), ".", 1);
                strncpy(dirent->name + strlen(dirent->name), (char*)dirEntry->ext, 3);
            }
        }