/**
* primWrite: id from: byteArray startingAt: startIndex count: count "Write into the receiver's
* file from the given area of storage, starting at the given index, as many as count bytes;
* return the number of bytes actually written. 2/12/96 sw"
*
* <p><primitive: 158>
*
* <p>closed ifTrue: [^ self halt: 'Write error: File not open']. rwmode ifFalse: [^ self halt:
* 'Error-attempt to write to a read-only file.']. self halt: 'File write error'! !
*/
Object fileWrite(int argCount) {
if (argCount != 4) throw fHandler.primitiveFailed();
RandomAccessFile file = lookupFile(3);
SqueakObject byteArray = fHandler.stackNonInteger(2);
int startIndex = fHandler.stackInteger(1) - 1; // zero based
int count = fHandler.stackInteger(0);
try {
int written = 0;
for (int index = startIndex; index < startIndex + count; index++) {
file.write(byteArray.getByte(index));
written++;
}
return fHandler.pos32BitIntFor(written);
} catch (IOException e) {
e.printStackTrace();
}
throw fHandler.primitiveFailed();
}
/**
* primRead: id into: byteArray startingAt: startIndex count: count "read from the receiver's file
* into the given area of storage, starting at the given index, as many as count bytes; return the
* number of bytes actually read. 2/12/96 sw"
*
* <p><primitive: 154>
*
* <p>self halt: 'error reading file'!
*/
Object readIntoStartingAtCount(int argCount) {
if (argCount != 4) throw fHandler.primitiveFailed();
SqueakObject byteArray = fHandler.stackNonInteger(2);
int startIndex = fHandler.stackInteger(1) - 1;
int count = fHandler.stackInteger(0);
RandomAccessFile file = lookupFile(3);
byte[] buffer = new byte[count];
try {
int read = file.read(buffer, 0, count);
for (int index = 0; index < read; index++) {
byteArray.setByte(startIndex + index, buffer[index]); // FIXME: this code cheats!
}
return fHandler.pos32BitIntFor(read);
} catch (IOException e) {
e.printStackTrace();
}
throw fHandler.primitiveFailed();
}
/**
* lookupEntryIn: pathName index: index "Look up the index-th entry of the directory with the
* given path (starting from the root of the file hierarchy) and return an array containing:
*
* <p><name> <creationTime> <modificationTime> <dirFlag> <fileSize>
*
* <p>The creation and modification times are in seconds since the start of the Smalltalk time
* epoch. DirFlag is true if the entry is a directory. FileSize the file size in bytes or zero for
* directories. The primitive returns nil when index is past the end of the directory. It fails if
* the given pathName is bad."
*
* <p><primitive: 162> self primitiveFailed.!
*/
Object lookupEntryInIndex(int argCount) {
if (argCount != 2) throw fHandler.primitiveFailed();
SqueakObject fullPath = fHandler.stackNonInteger(1);
int index = fHandler.stackInteger(0) - 1;
if (index < 0) throw fHandler.primitiveFailed();
String filename = fullPath.asString();
if (filename.trim().length() == 0) filename = "/";
File directory = new File(fullPath.asString());
if (!directory.exists()) throw fHandler.primitiveFailed();
File[] paths = directory.listFiles();
if (index < paths.length) return makeDirectoryEntryArray(paths[index]);
return fHandler.squeakNil();
}
