void VMMain(int argc, char *argv[]){
int FileDescriptor, Length, Offset;
char Buffer[1024];
VMPrint("VMMain opening longtest.txt\n");
VMFileOpen("longtest.txt", O_CREAT | O_TRUNC | O_RDWR, 0644, &FileDescriptor);
VMPrint("VMMain VMFileOpen returned %d\n", FileDescriptor);
Offset = ((int)'~' - (int)' ') + 1;
for(Length = 0; Length < sizeof(Buffer); Length++){
Buffer[Length] = ' ' + (Length % Offset);
}
VMPrint("VMMain writing file\n");
Length = sizeof(Buffer);
VMFileWrite(FileDescriptor,Buffer,&Length);
VMPrint("VMMain VMFileWrite returned %d\n", Length);
VMPrint("VMMain seeking file\n");
VMFileSeek(FileDescriptor, 448, 0, &Offset);
VMPrint("VMMain VMFileSeek offset at %d\n",Offset);
VMPrint("VMMain reading file\n");
Length = 128;
VMFileRead(FileDescriptor,Buffer,&Length);
VMPrint("VMMain VMFileRead returned %d\n", Length);
if(0 <= Length){
Buffer[Length] = '\0';
VMPrint("VMMain read in \"%s\"\n", Buffer);
}
VMPrint("VMMain closing file\n");
VMFileClose(FileDescriptor);
VMPrint("Goodbye\n");
}
void VMMain(int argc, char *argv[]){
int DirDescriptor, FileDescriptor, Length;
char LineBuffer[1024];
char DirectoryName[VM_FILE_SYSTEM_MAX_PATH];
SVMDirectoryEntry DirectoryEntry;
int CharactersIn = 0;
int Mil, Kil, One;
while(1){
VMDirectoryCurrent(DirectoryName);
VMPrint("%s> ",DirectoryName);
CharactersIn = 0;
while(1){
Length = 1;
VMFileRead(0, LineBuffer + CharactersIn, &Length);
if('\n' == LineBuffer[CharactersIn]){
LineBuffer[CharactersIn] = '\0';
break;
}
if((0 == CharactersIn)&&(' ' == LineBuffer[CharactersIn])){
continue;
}
CharactersIn++;
}
while(0 < CharactersIn){
CharactersIn--;
if(' ' != LineBuffer[CharactersIn]){
CharactersIn++;
break;
}
LineBuffer[CharactersIn] = '\0';
}
if(StringMatch(LineBuffer,"exit")){
break;
}
else if(StringMatch(LineBuffer,"ls")){
if(VM_STATUS_SUCCESS == VMDirectoryOpen(DirectoryName, &DirDescriptor)){
VMPrint(" DATE | TIME | TYPE | SIZE | SFN | LFN\n");
while(VM_STATUS_SUCCESS == VMDirectoryRead(DirDescriptor, &DirectoryEntry)){
VMPrint("%04d/%02d/%02d %02d:%02d %s ",DirectoryEntry.DModify.DYear, DirectoryEntry.DModify.DMonth, DirectoryEntry.DModify.DDay, (DirectoryEntry.DModify.DHour % 12) ? (DirectoryEntry.DModify.DHour % 12) : 12 , DirectoryEntry.DModify.DMinute, DirectoryEntry.DModify.DHour >= 12 ? "PM" : "AM");
VMPrint("%s ", DirectoryEntry.DAttributes & VM_FILE_SYSTEM_ATTR_DIRECTORY ? "<DIR> " : "<FILE>");
Mil = DirectoryEntry.DSize / 1000000;
Kil = (DirectoryEntry.DSize / 1000) % 1000;
One = DirectoryEntry.DSize % 1000;
if(Mil){
VMPrint("%3d,%03d,%03d ",Mil, Kil, One);
}
else if(Kil){
VMPrint(" %3d,%03d ", Kil, One);
}
else if(0 == (DirectoryEntry.DAttributes & VM_FILE_SYSTEM_ATTR_DIRECTORY)){
VMPrint(" %3d ",One);
}
else{
VMPrint(" ");
}
VMPrint("%-13s %s\n",DirectoryEntry.DShortFileName, DirectoryEntry.DLongFileName);
}
VMDirectoryClose(DirDescriptor);
}
else{
VMPrint("Failed to open directory %s!\n", DirectoryName);
}
}
else if(StringMatchN(LineBuffer,"cd ",3)){
CharactersIn = 2;
while(' ' == LineBuffer[CharactersIn]){
CharactersIn++;
}
if('\0' == LineBuffer[CharactersIn]){
CharactersIn--;
LineBuffer[CharactersIn] = '/';
}
if(VM_STATUS_SUCCESS != VMDirectoryChange(LineBuffer + CharactersIn)){
VMPrint("Failed to change directory to %s!\n", LineBuffer + CharactersIn);
}
}
else if(StringMatchN(LineBuffer,"rm ",3)){
CharactersIn = 2;
while(' ' == LineBuffer[CharactersIn]){
CharactersIn++;
}
if('\0' == LineBuffer[CharactersIn]){
CharactersIn--;
LineBuffer[CharactersIn] = '/';
}
if(VM_STATUS_SUCCESS != VMDirectoryUnlink(LineBuffer + CharactersIn)){
VMPrint("Failed to remove node %s!\n", LineBuffer + CharactersIn);
}
}
else if(StringMatchN(LineBuffer,"mkdir ",6)){
CharactersIn = 5;
while(' ' == LineBuffer[CharactersIn]){
CharactersIn++;
}
if('\0' == LineBuffer[CharactersIn]){
CharactersIn--;
LineBuffer[CharactersIn] = '/';
}
if(VM_STATUS_SUCCESS != VMDirectoryCreate(LineBuffer + CharactersIn)){
VMPrint("Failed to create directory %s!\n", LineBuffer + CharactersIn);
}
}
else if(StringMatchN(LineBuffer,"cat ",4)){
CharactersIn = 3;
while(' ' == LineBuffer[CharactersIn]){
CharactersIn++;
}
if(VM_STATUS_SUCCESS == VMFileOpen(LineBuffer + CharactersIn, O_RDONLY, 0644, &FileDescriptor)){
Length = sizeof(LineBuffer);
while(VM_STATUS_SUCCESS == VMFileRead(FileDescriptor, LineBuffer, &Length)){
if(Length){
VMFileWrite(1,LineBuffer,&Length);
}
if(Length < sizeof(LineBuffer)){
break;
}
Length = sizeof(LineBuffer);
}
VMFileClose(FileDescriptor);
}
else{
VMPrint("Failed to open file %s!\n", LineBuffer + CharactersIn);
}
}
}
}
