private IRubyObject internalGets(ThreadContext context, IRubyObject[] args) {
Ruby runtime = context.runtime;
if (!isEndOfString() && !data.eof) {
boolean isParagraph = false;
boolean is19 = runtime.is1_9();
ByteList sep = ((RubyString) runtime.getGlobalVariables().get("$/")).getByteList();
IRubyObject sepArg;
int limit = -1;
if (is19) {
IRubyObject limitArg =
(args.length > 1
? args[1]
: (args.length > 0 && args[0] instanceof RubyFixnum ? args[0] : null));
if (limitArg != null) {
limit = RubyNumeric.fix2int(limitArg);
}
sepArg = (args.length > 0 && !(args[0] instanceof RubyFixnum) ? args[0] : null);
} else {
sepArg = (args.length > 0 ? args[0] : null);
}
if (sepArg != null) {
if (sepArg.isNil()) {
int bytesAvailable = data.internal.getByteList().getRealSize() - (int) data.pos;
int bytesToUse = (limit < 0 || limit >= bytesAvailable ? bytesAvailable : limit);
ByteList buf = data.internal.getByteList().makeShared((int) data.pos, bytesToUse);
data.pos += buf.getRealSize();
return makeString(runtime, buf);
}
sep = sepArg.convertToString().getByteList();
if (sep.getRealSize() == 0) {
isParagraph = true;
sep = Stream.PARAGRAPH_SEPARATOR;
}
}
ByteList ss = data.internal.getByteList();
if (isParagraph) {
swallowLF(ss);
if (data.pos == ss.getRealSize()) {
return runtime.getNil();
}
}
int ix = ss.indexOf(sep, (int) data.pos);
ByteList add;
if (-1 == ix) {
ix = data.internal.getByteList().getRealSize();
add = ByteList.EMPTY_BYTELIST;
} else {
add = sep;
}
int bytes = ix - (int) data.pos;
int bytesToUse = (limit < 0 || limit >= bytes ? bytes : limit);
int bytesWithSep = ix - (int) data.pos + add.getRealSize();
int bytesToUseWithSep = (limit < 0 || limit >= bytesWithSep ? bytesWithSep : limit);
ByteList line = new ByteList(bytesToUseWithSep);
if (is19) line.setEncoding(data.internal.getByteList().getEncoding());
line.append(data.internal.getByteList(), (int) data.pos, bytesToUse);
data.pos += bytesToUse;
int sepBytesToUse = bytesToUseWithSep - bytesToUse;
line.append(add, 0, sepBytesToUse);
data.pos += sepBytesToUse;
if (sepBytesToUse >= add.getRealSize()) {
data.lineno++;
}
return makeString(runtime, line);
}
return runtime.getNil();
}
