/** flo_to_s */
@JRubyMethod(name = "to_s")
@Override
public IRubyObject to_s() {
Ruby runtime = getRuntime();
if (Double.isInfinite(value))
return RubyString.newString(runtime, value < 0 ? "-Infinity" : "Infinity");
if (Double.isNaN(value)) return RubyString.newString(runtime, "NaN");
ByteList buf = new ByteList();
// Under 1.9, use full-precision float formatting (JRUBY-4846).
// Double-precision can represent around 16 decimal digits;
// we use 20 to ensure full representation.
Sprintf.sprintf(buf, Locale.US, "%#.20g", this);
int e = buf.indexOf('e');
if (e == -1) e = buf.getRealSize();
ASCIIEncoding ascii = ASCIIEncoding.INSTANCE;
if (!ascii.isDigit(buf.get(e - 1))) {
buf.setRealSize(0);
Sprintf.sprintf(buf, Locale.US, "%#.14e", this);
e = buf.indexOf('e');
if (e == -1) e = buf.getRealSize();
}
int p = e;
while (buf.get(p - 1) == '0' && ascii.isDigit(buf.get(p - 2))) p--;
System.arraycopy(buf.getUnsafeBytes(), e, buf.getUnsafeBytes(), p, buf.getRealSize() - e);
buf.setRealSize(p + buf.getRealSize() - e);
buf.setEncoding(USASCIIEncoding.INSTANCE);
return runtime.newString(buf);
}
public synchronized int writenonblock(ByteList buf) throws IOException, BadDescriptorException {
checkWritable();
ensureWrite();
// Ruby ignores empty syswrites
if (buf == null || buf.length() == 0) return 0;
if (buffer.position() != 0 && !flushWrite(false)) return 0;
if (descriptor.getChannel() instanceof SelectableChannel) {
SelectableChannel selectableChannel = (SelectableChannel) descriptor.getChannel();
synchronized (selectableChannel.blockingLock()) {
boolean oldBlocking = selectableChannel.isBlocking();
try {
if (oldBlocking) {
selectableChannel.configureBlocking(false);
}
return descriptor.write(ByteBuffer.wrap(buf.getUnsafeBytes(), buf.begin(), buf.length()));
} finally {
if (oldBlocking) {
selectableChannel.configureBlocking(oldBlocking);
}
}
}
} else {
// can't set nonblocking, so go ahead with it...not much else we can do
return descriptor.write(ByteBuffer.wrap(buf.getUnsafeBytes(), buf.begin(), buf.length()));
}
}
@JRubyMethod
public IRubyObject convert(ThreadContext context, IRubyObject srcBuffer) {
if (!(srcBuffer instanceof RubyString)) {
throw context.runtime.newTypeError(srcBuffer, context.runtime.getString());
}
RubyString srcString = (RubyString) srcBuffer;
ByteList srcBL = srcString.getByteList();
if (srcBL.getRealSize() == 0) return context.runtime.newSymbol("source_buffer_empty");
ByteBuffer srcBB = ByteBuffer.wrap(srcBL.getUnsafeBytes(), srcBL.begin(), srcBL.getRealSize());
try {
CharBuffer srcCB =
CharBuffer.allocate((int) (srcDecoder.maxCharsPerByte() * srcBL.getRealSize()) + 1);
CoderResult decodeResult = srcDecoder.decode(srcBB, srcCB, true);
srcCB.flip();
ByteBuffer destBB =
ByteBuffer.allocate((int) (destEncoder.maxBytesPerChar() * srcCB.limit()) + 1);
CoderResult encodeResult = destEncoder.encode(srcCB, destBB, true);
destBB.flip();
byte[] destBytes = new byte[destBB.limit()];
destBB.get(destBytes);
srcDecoder.reset();
destEncoder.reset();
return context.runtime.newString(new ByteList(destBytes, destEncoding.getEncoding(), false));
} catch (Exception e) {
throw context.runtime.newRuntimeError(e.getLocalizedMessage());
}
}
private int nameToBackrefNumber(RubyString str) {
ByteList value = str.getByteList();
try {
return pattern.nameToBackrefNumber(
value.getUnsafeBytes(), value.getBegin(), value.getBegin() + value.getRealSize(), regs);
} catch (JOniException je) {
throw getRuntime().newIndexError(je.getMessage());
}
}
public static int getBackrefNumber(DynamicObject matchData, ByteList value) {
assert RubyGuards.isRubyMatchData(matchData);
return Layouts.REGEXP
.getRegex(Layouts.MATCH_DATA.getFields(matchData).regexp)
.nameToBackrefNumber(
value.getUnsafeBytes(),
value.getBegin(),
value.getBegin() + value.getRealSize(),
Layouts.MATCH_DATA.getFields(matchData).region);
}
@JRubyMethod(name = "ruby=", required = 1)
public IRubyObject ruby_set(final ThreadContext ctx, IRubyObject arg) {
RubyString string;
try {
string = arg.convertToString();
} catch (RaiseException re) {
throw newTypeError(ctx.runtime, arg.getMetaClass(), "String");
}
ByteList bytes = string.getByteList();
value.set(bytes.getUnsafeBytes(), bytes.getBegin(), bytes.getRealSize());
return arg;
}
public final void marshal(
ThreadContext context, InvocationBuffer buffer, IRubyObject parameter) {
if (parameter instanceof RubyString) {
Util.checkStringSafety(context.getRuntime(), parameter);
ByteList bl = ((RubyString) parameter).getByteList();
buffer.putArray(
bl.getUnsafeBytes(), bl.begin(), bl.length(), ArrayFlags.IN | ArrayFlags.NULTERMINATE);
} else if (parameter.isNil()) {
buffer.putAddress(0);
} else {
throw context.getRuntime().newArgumentError("Invalid string parameter");
}
}
/**
* Perform a low-level read of the specified number of bytes into the specified byte list. The
* incoming bytes will be appended to the byte list. This is equivalent to the read(2) POSIX
* function, and like that function it ignores read and write buffers defined elsewhere.
*
* @param number the number of bytes to read
* @param byteList the byte list on which to append the incoming bytes
* @return the number of bytes actually read
* @throws java.io.IOException if there is an exception during IO
* @throws org.jruby.util.io.BadDescriptorException if the associated channel is already closed.
* @see org.jruby.util.ByteList
*/
public int read(int number, ByteList byteList) throws IOException, BadDescriptorException {
checkOpen();
byteList.ensure(byteList.length() + number);
int bytesRead =
read(
ByteBuffer.wrap(
byteList.getUnsafeBytes(), byteList.begin() + byteList.length(), number));
if (bytesRead > 0) {
byteList.length(byteList.length() + bytesRead);
}
return bytesRead;
}
private RubyString strioSubstr(Ruby runtime, int pos, int len) {
RubyString str = ptr.string;
ByteList strByteList = str.getByteList();
byte[] strBytes = strByteList.getUnsafeBytes();
Encoding enc = str.getEncoding();
int rlen = str.size() - pos;
if (len > rlen) len = rlen;
if (len < 0) len = 0;
if (len == 0) return RubyString.newEmptyString(runtime);
return RubyString.newStringShared(runtime, strBytes, strByteList.getBegin() + pos, len, enc);
}
public final void marshal(
ThreadContext context, InvocationBuffer buffer, IRubyObject parameter) {
if (parameter instanceof Buffer) {
addBufferParameter(buffer, parameter, flags);
} else if (parameter instanceof Pointer) {
buffer.putAddress(getAddress((Pointer) parameter));
} else if (parameter instanceof Struct) {
IRubyObject memory = ((Struct) parameter).getMemory();
if (memory instanceof Buffer) {
addBufferParameter(buffer, memory, flags);
} else if (memory instanceof Pointer) {
buffer.putAddress(getAddress((Pointer) memory));
} else if (memory == null || memory.isNil()) {
buffer.putAddress(0L);
} else {
throw context.getRuntime().newArgumentError("Invalid Struct memory");
}
} else if (parameter.isNil()) {
buffer.putAddress(0L);
} else if (parameter instanceof RubyString) {
ByteList bl = ((RubyString) parameter).getByteList();
buffer.putArray(
bl.getUnsafeBytes(), bl.begin(), bl.length(), flags | ArrayFlags.NULTERMINATE);
} else if (parameter.respondsTo("to_ptr")) {
final int MAXRECURSE = 4;
for (int depth = 0; depth < MAXRECURSE; ++depth) {
IRubyObject ptr = parameter.callMethod(context, "to_ptr");
if (ptr instanceof Pointer) {
buffer.putAddress(getAddress((Pointer) ptr));
} else if (ptr instanceof Buffer) {
addBufferParameter(buffer, ptr, flags);
} else if (ptr.isNil()) {
buffer.putAddress(0L);
} else if (depth < MAXRECURSE && ptr.respondsTo("to_ptr")) {
parameter = ptr;
continue;
} else {
throw context.getRuntime().newArgumentError("to_ptr returned an invalid pointer");
}
break;
}
} else if (parameter instanceof RubyInteger && acceptIntegerValues) {
buffer.putAddress(((RubyInteger) parameter).getLongValue());
} else {
throw context.getRuntime().newArgumentError("Invalid buffer/pointer parameter");
}
}
@JRubyMethod(name = "chr", compat = CompatVersion.RUBY1_9)
public RubyString chr19(ThreadContext context, IRubyObject arg) {
Ruby runtime = context.getRuntime();
long value = getLongValue();
Encoding enc = arg.convertToString().toEncoding(runtime);
int n;
if (value < 0 || (n = StringSupport.codeLength(runtime, enc, (int) value)) <= 0) {
throw runtime.newRangeError(this.toString() + " out of char range");
}
ByteList bytes = new ByteList(n);
enc.codeToMbc((int) value, bytes.getUnsafeBytes(), 0);
bytes.setRealSize(n);
return RubyString.newStringNoCopy(runtime, bytes, enc, 0);
}
private ByteList fromEncodedBytes(Ruby runtime, Encoding enc, int value) {
int n;
try {
n = value < 0 ? 0 : enc.codeToMbcLength(value);
} catch (EncodingException ee) {
n = 0;
}
if (n <= 0) throw runtime.newRangeError(this.toString() + " out of char range");
ByteList bytes = new ByteList(n);
enc.codeToMbc(value, bytes.getUnsafeBytes(), 0);
bytes.setRealSize(n);
return bytes;
}
/**
* @throws IOException
* @throws BadDescriptorException
*/
private int bufferedWrite(ByteList buf) throws IOException, BadDescriptorException {
checkWritable();
ensureWrite();
// Ruby ignores empty syswrites
if (buf == null || buf.length() == 0) return 0;
if (buf.length() > buffer.capacity()) { // Doesn't fit in buffer. Write immediately.
flushWrite(); // ensure nothing left to write
int n = descriptor.write(ByteBuffer.wrap(buf.getUnsafeBytes(), buf.begin(), buf.length()));
if (n != buf.length()) {
// TODO: check the return value here
}
} else {
if (buf.length() > buffer.remaining()) flushWrite();
buffer.put(buf.getUnsafeBytes(), buf.begin(), buf.length());
}
if (isSync()) flushWrite();
return buf.getRealSize();
}
private void updatePairs(ByteList value, Encoding encoding, Pair[] pairs) {
Arrays.sort(pairs);
int length = pairs.length;
byte[] bytes = value.getUnsafeBytes();
int p = value.getBegin();
int s = p;
int c = 0;
for (int i = 0; i < length; i++) {
int q = s + pairs[i].bytePos;
c += StringSupport.strLength(encoding, bytes, p, q);
pairs[i].charPos = c;
p = q;
}
}
@JRubyMethod(name = "truncate", required = 1)
public IRubyObject truncate(IRubyObject len) {
checkWritable();
int l = RubyFixnum.fix2int(len);
int plen = ptr.string.size();
if (l < 0) {
throw getRuntime().newErrnoEINVALError("negative legnth");
}
ptr.string.resize(l);
ByteList buf = ptr.string.getByteList();
if (plen < l) {
// zero the gap
Arrays.fill(buf.getUnsafeBytes(), buf.getBegin() + plen, buf.getBegin() + l, (byte) 0);
}
return len;
}
@JRubyMethod(name = "ruby=")
public IRubyObject ruby_set(final ThreadContext ctx, IRubyObject arg) {
RubyString string;
try {
string = arg.convertToString();
} catch (RaiseException re) {
throw newTypeError(ctx.runtime, arg.getMetaClass(), "String");
}
if (string.getEncoding() == UTF8Encoding.INSTANCE
|| string.getEncoding() == USASCIIEncoding.INSTANCE) {
ByteList bytes = string.getByteList();
value.set(bytes.getUnsafeBytes(), bytes.getBegin(), bytes.getRealSize());
} else {
value.set(string.toString());
}
return arg;
}
@JRubyMethod(
name = {"write"},
required = 1)
public IRubyObject write(ThreadContext context, IRubyObject arg) {
checkWritable();
Ruby runtime = context.runtime;
RubyString str = arg.asString();
int len, olen;
Encoding enc, enc2;
enc = ptr.string.getEncoding();
enc2 = str.getEncoding();
if (enc != enc2
&& enc != EncodingUtils.ascii8bitEncoding(runtime)
// this is a hack because we don't seem to handle incoming ASCII-8BIT properly in transcoder
&& enc2 != ASCIIEncoding.INSTANCE) {
str = runtime.newString(Transcoder.strConvEnc(context, str.getByteList(), enc2, enc));
}
len = str.size();
if (len == 0) return RubyFixnum.zero(runtime);
checkModifiable();
olen = ptr.string.size();
if ((ptr.flags & OpenFile.APPEND) != 0) {
ptr.pos = olen;
}
if (ptr.pos == olen
// this is a hack because we don't seem to handle incoming ASCII-8BIT properly in transcoder
&& enc2 != ASCIIEncoding.INSTANCE) {
EncodingUtils.encStrBufCat(runtime, ptr.string, str.getByteList(), enc);
} else {
strioExtend(ptr.pos, len);
ByteList ptrByteList = ptr.string.getByteList();
System.arraycopy(
str.getByteList().getUnsafeBytes(),
str.getByteList().getBegin(),
ptrByteList.getUnsafeBytes(),
ptrByteList.begin + ptr.pos,
len);
ptr.string.infectBy(str);
}
ptr.string.infectBy(this);
ptr.pos += len;
return RubyFixnum.newFixnum(runtime, len);
}
public void put(
ThreadContext context,
StructLayout.Storage cache,
Member m,
IRubyObject ptr,
IRubyObject value) {
if (isCharArray() && value instanceof RubyString) {
ByteList bl = value.convertToString().getByteList();
m.getMemoryIO(ptr)
.putZeroTerminatedByteArray(
m.offset,
bl.getUnsafeBytes(),
bl.begin(),
Math.min(bl.length(), arrayType.length() - 1));
} else if (false) {
RubyArray ary = value.convertToArray();
int count = ary.size();
if (count > arrayType.length()) {
throw context.getRuntime().newIndexError("array too big");
}
AbstractMemory memory = (AbstractMemory) ptr;
// Clear any elements that will not be filled by the array
if (count < arrayType.length()) {
memory
.getMemoryIO()
.setMemory(
m.offset + (count * arrayType.getComponentType().getNativeSize()),
(arrayType.length() - count) * arrayType.getComponentType().getNativeSize(),
(byte) 0);
}
for (int i = 0; i < count; ++i) {
op.put(
context.getRuntime(),
memory,
m.offset + (i * arrayType.getComponentType().getNativeSize()),
ary.entry(i));
}
} else {
throw context.getRuntime().newNotImplementedError("cannot set array field");
}
}
@JRubyMethod(name = "truncate", required = 1)
@Override
public IRubyObject truncate(IRubyObject arg) {
checkWritable();
int len = RubyFixnum.fix2int(arg);
if (len < 0) {
throw getRuntime().newErrnoEINVALError("negative legnth");
}
data.internal.modify();
ByteList buf = data.internal.getByteList();
if (len < buf.length()) {
Arrays.fill(buf.getUnsafeBytes(), len, buf.length(), (byte) 0);
}
buf.length(len);
return arg;
}
@JRubyMethod(frame = true)
public IRubyObject marshal_load(ThreadContext context, IRubyObject str) {
try {
ByteList byteList = str.convertToString().getByteList();
ByteArrayInputStream bais =
new ByteArrayInputStream(
byteList.getUnsafeBytes(), byteList.getBegin(), byteList.getRealSize());
ObjectInputStream ois = new JRubyObjectInputStream(context.getRuntime(), bais);
object = ois.readObject();
return this;
} catch (IOException ioe) {
throw context.getRuntime().newIOErrorFromException(ioe);
} catch (ClassNotFoundException cnfe) {
throw context
.getRuntime()
.newTypeError("Class not found unmarshaling Java type: " + cnfe.getLocalizedMessage());
}
}
private void strioExtend(int pos, int len) {
int olen;
checkModifiable();
olen = ptr.string.size();
if (pos + len > olen) {
ptr.string.resize(pos + len);
if (pos > olen) {
ByteList ptrByteList = ptr.string.getByteList();
// zero the gap
Arrays.fill(
ptrByteList.getUnsafeBytes(),
ptrByteList.getBegin() + olen,
ptrByteList.getBegin() + pos,
(byte) 0);
}
} else {
ptr.string.modify19();
}
}
public void put(
ThreadContext context,
StructLayout.Storage cache,
Member m,
IRubyObject ptr,
IRubyObject value) {
ByteList bl = value.convertToString().getByteList();
MemoryPointer mem = MemoryPointer.allocate(context.getRuntime(), 1, bl.length() + 1, false);
//
// Keep a reference to the temporary memory in the cache so it does
// not get freed by the GC until the struct is freed
//
cache.putReference(m, mem);
MemoryIO io = mem.getMemoryIO();
io.put(0, bl.getUnsafeBytes(), bl.begin(), bl.length());
io.putByte(bl.length(), (byte) 0);
m.getMemoryIO(ptr).putMemoryIO(m.getOffset(ptr), io);
}
private void updatePairs(ByteList value, Encoding encoding, Pair[] pairs) {
Arrays.sort(pairs);
int length = pairs.length;
byte[] bytes = value.getUnsafeBytes();
int p = value.getBegin();
int s = p;
int c = 0;
for (int i = 0; i < length; i++) {
int q = s + pairs[i].bytePos;
c += StringSupport.strLength(encoding, bytes, p, q);
pairs[i].charPos = c;
p = q;
}
Pair key = new Pair();
key.bytePos = begin;
charOffsets.beg[0] = pairs[Arrays.binarySearch(pairs, key)].charPos;
key.bytePos = end;
charOffsets.end[0] = pairs[Arrays.binarySearch(pairs, key)].charPos;
}
@Override
public IRubyObject each_charInternal(final ThreadContext context, final Block block) {
checkReadable();
Ruby runtime = context.runtime;
ByteList bytes = data.internal.getByteList();
int len = bytes.getRealSize();
int end = bytes.getBegin() + len;
Encoding enc = runtime.is1_9() ? bytes.getEncoding() : runtime.getKCode().getEncoding();
while (data.pos < len) {
int pos = (int) data.pos;
int n = StringSupport.length(enc, bytes.getUnsafeBytes(), pos, end);
if (len < pos + n) n = len - pos;
data.pos += n;
block.yield(context, data.internal.makeShared19(runtime, pos, n));
}
return this;
}
// strio_getline
private IRubyObject getline(ThreadContext context, IRubyObject[] args) {
Ruby runtime = context.runtime;
IRubyObject str = context.nil;
;
int n, limit = -1;
switch (args.length) {
case 0:
str = runtime.getGlobalVariables().get("$/");
break;
case 1:
{
str = args[0];
if (!str.isNil() && !(str instanceof RubyString)) {
IRubyObject tmp = str.checkStringType19();
if (tmp.isNil()) {
limit = RubyNumeric.num2int(str);
if (limit == 0) return runtime.newString();
str = runtime.getGlobalVariables().get("$/");
} else {
str = tmp;
}
}
break;
}
case 2:
if (!args[0].isNil()) str = args[0].convertToString();
// 2.0 ignores double nil, 1.9 raises
if (runtime.is2_0()) {
if (!args[1].isNil()) {
limit = RubyNumeric.num2int(args[1]);
}
} else {
limit = RubyNumeric.num2int(args[1]);
}
break;
}
if (isEndOfString()) {
return context.nil;
}
ByteList dataByteList = ptr.string.getByteList();
byte[] dataBytes = dataByteList.getUnsafeBytes();
int begin = dataByteList.getBegin();
int s = begin + ptr.pos;
int e = begin + dataByteList.getRealSize();
int p;
if (limit > 0 && s + limit < e) {
e = dataByteList.getEncoding().rightAdjustCharHead(dataBytes, s, s + limit, e);
}
if (str.isNil()) {
str = strioSubstr(runtime, ptr.pos, e - s);
} else if ((n = ((RubyString) str).size()) == 0) {
// this is not an exact port; the original confused me
p = s;
// remove leading \n
while (dataBytes[p] == '\n') {
if (++p == e) {
return context.nil;
}
}
s = p;
// find next \n or end; if followed by \n, include it too
p = memchr(dataBytes, p, '\n', e - p);
if (p != -1) {
if (++p < e && dataBytes[p] == '\n') {
e = p + 1;
} else {
e = p;
}
}
str = strioSubstr(runtime, s - begin, e - s);
} else if (n == 1) {
RubyString strStr = (RubyString) str;
ByteList strByteList = strStr.getByteList();
if ((p = memchr(dataBytes, s, strByteList.get(0), e - s)) != -1) {
e = p + 1;
}
str = strioSubstr(runtime, ptr.pos, e - s);
} else {
if (n < e - s) {
RubyString strStr = (RubyString) str;
ByteList strByteList = strStr.getByteList();
byte[] strBytes = strByteList.getUnsafeBytes();
int[] skip = new int[1 << CHAR_BIT];
int pos;
p = strByteList.getBegin();
bm_init_skip(skip, strBytes, p, n);
if ((pos = bm_search(strBytes, p, n, dataBytes, s, e - s, skip)) >= 0) {
e = s + pos + n;
}
}
str = strioSubstr(runtime, ptr.pos, e - s);
}
ptr.pos = e - begin;
ptr.lineno++;
return str;
}
/**
* @deprecated readall do busy loop for the IO which has NONBLOCK bit. You should implement the
* logic by yourself with fread().
*/
@Deprecated
public synchronized ByteList readall() throws IOException, BadDescriptorException {
final long fileSize =
descriptor.isSeekable() && descriptor.getChannel() instanceof FileChannel
? ((FileChannel) descriptor.getChannel()).size()
: 0;
//
// Check file size - special files in /proc have zero size and need to be
// handled by the generic read path.
//
if (fileSize > 0) {
ensureRead();
FileChannel channel = (FileChannel) descriptor.getChannel();
final long left = fileSize - channel.position() + bufferedInputBytesRemaining();
if (left <= 0) {
eof = true;
return null;
}
if (left > Integer.MAX_VALUE) {
if (getRuntime() != null) {
throw getRuntime().newIOError("File too large");
} else {
throw new IOException("File too large");
}
}
ByteList result = new ByteList((int) left);
ByteBuffer buf = ByteBuffer.wrap(result.getUnsafeBytes(), result.begin(), (int) left);
//
// Copy any buffered data (including ungetc byte)
//
copyBufferedBytes(buf);
//
// Now read unbuffered directly from the file
//
while (buf.hasRemaining()) {
final int MAX_READ_CHUNK = 1 * 1024 * 1024;
//
// When reading into a heap buffer, the jvm allocates a temporary
// direct ByteBuffer of the requested size. To avoid allocating
// a huge direct buffer when doing ludicrous reads (e.g. 1G or more)
// we split the read up into chunks of no more than 1M
//
ByteBuffer tmp = buf.duplicate();
if (tmp.remaining() > MAX_READ_CHUNK) {
tmp.limit(tmp.position() + MAX_READ_CHUNK);
}
int n = channel.read(tmp);
if (n <= 0) {
break;
}
buf.position(tmp.position());
}
eof = true;
result.length(buf.position());
return result;
} else if (descriptor.isNull()) {
return new ByteList(0);
} else {
checkReadable();
ByteList byteList = new ByteList();
ByteList read = fread(BUFSIZE);
if (read == null) {
eof = true;
return byteList;
}
while (read != null) {
byteList.append(read);
read = fread(BUFSIZE);
}
return byteList;
}
}
public synchronized ByteList fgets(ByteList separatorString)
throws IOException, BadDescriptorException {
checkReadable();
ensureRead();
if (separatorString == null) {
return readall();
}
final ByteList separator =
(separatorString == PARAGRAPH_DELIMETER) ? PARAGRAPH_SEPARATOR : separatorString;
descriptor.checkOpen();
if (feof()) {
return null;
}
int c = read();
if (c == -1) {
return null;
}
// unread back
buffer.position(buffer.position() - 1);
ByteList buf = new ByteList(40);
byte first = separator.getUnsafeBytes()[separator.getBegin()];
LineLoop:
while (true) {
ReadLoop:
while (true) {
byte[] bytes = buffer.array();
int offset = buffer.position();
int max = buffer.limit();
// iterate over remainder of buffer until we find a match
for (int i = offset; i < max; i++) {
c = bytes[i];
if (c == first) {
// terminate and advance buffer when we find our char
buf.append(bytes, offset, i - offset);
if (i >= max) {
buffer.clear();
} else {
buffer.position(i + 1);
}
break ReadLoop;
}
}
// no match, append remainder of buffer and continue with next block
buf.append(bytes, offset, buffer.remaining());
int read = refillBuffer();
if (read == -1) break LineLoop;
}
// found a match above, check if remaining separator characters match, appending as we go
for (int i = 0; i < separator.getRealSize(); i++) {
if (c == -1) {
break LineLoop;
} else if (c != separator.getUnsafeBytes()[separator.getBegin() + i]) {
buf.append(c);
continue LineLoop;
}
buf.append(c);
if (i < separator.getRealSize() - 1) {
c = read();
}
}
break;
}
if (separatorString == PARAGRAPH_DELIMETER) {
while (c == separator.getUnsafeBytes()[separator.getBegin()]) {
c = read();
}
ungetc(c);
}
return buf;
}
@JRubyMethod(name = "read", optional = 2)
public IRubyObject read(ThreadContext context, IRubyObject[] args) {
checkReadable();
Ruby runtime = context.runtime;
IRubyObject str = runtime.getNil();
int len;
boolean binary = false;
switch (args.length) {
case 2:
str = args[1];
if (!str.isNil()) {
str = str.convertToString();
((RubyString) str).modify();
}
case 1:
if (!args[0].isNil()) {
len = RubyNumeric.fix2int(args[0]);
if (len < 0) {
throw getRuntime().newArgumentError("negative length " + len + " given");
}
if (len > 0 && isEndOfString()) {
if (!str.isNil()) ((RubyString) str).resize(0);
return getRuntime().getNil();
}
binary = true;
break;
}
case 0:
len = ptr.string.size();
if (len <= ptr.pos) {
if (str.isNil()) {
str = runtime.newString();
} else {
((RubyString) str).resize(0);
}
return str;
} else {
len -= ptr.pos;
}
break;
default:
throw getRuntime().newArgumentError(args.length, 0);
}
if (str.isNil()) {
str = strioSubstr(runtime, ptr.pos, len);
if (binary) ((RubyString) str).setEncoding(ASCIIEncoding.INSTANCE);
} else {
int rest = ptr.string.size() - ptr.pos;
if (len > rest) len = rest;
((RubyString) str).resize(len);
ByteList strByteList = ((RubyString) str).getByteList();
byte[] strBytes = strByteList.getUnsafeBytes();
ByteList dataByteList = ptr.string.getByteList();
byte[] dataBytes = dataByteList.getUnsafeBytes();
System.arraycopy(
dataBytes, dataByteList.getBegin() + ptr.pos, strBytes, strByteList.getBegin(), len);
if (binary) {
((RubyString) str).setEncoding(ASCIIEncoding.INSTANCE);
} else {
((RubyString) str).setEncoding(ptr.string.getEncoding());
}
}
ptr.pos += ((RubyString) str).size();
return str;
}
public Entry findAliasEntry(ByteList bytes) {
return aliases.get(
bytes.getUnsafeBytes(), bytes.getBegin(), bytes.getBegin() + bytes.getRealSize());
}
public Entry findEncodingEntry(ByteList bytes) {
return encodings.get(
bytes.getUnsafeBytes(), bytes.getBegin(), bytes.getBegin() + bytes.getRealSize());
}