/** 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);
}
private IRubyObject internalGets(ThreadContext context, IRubyObject[] args) {
Ruby runtime = context.getRuntime();
if (pos < internal.getByteList().realSize && !eof) {
boolean isParagraph = false;
ByteList sep;
if (args.length > 0) {
if (args[0].isNil()) {
ByteList buf =
internal
.getByteList()
.makeShared((int) pos, internal.getByteList().realSize - (int) pos);
pos += buf.realSize;
return RubyString.newString(runtime, buf);
}
sep = args[0].convertToString().getByteList();
if (sep.realSize == 0) {
isParagraph = true;
sep = Stream.PARAGRAPH_SEPARATOR;
}
} else {
sep = ((RubyString) runtime.getGlobalVariables().get("$/")).getByteList();
}
ByteList ss = internal.getByteList();
if (isParagraph) {
swallowLF(ss);
if (pos == ss.realSize) {
return runtime.getNil();
}
}
int ix = ss.indexOf(sep, (int) pos);
ByteList add;
if (-1 == ix) {
ix = internal.getByteList().realSize;
add = ByteList.EMPTY_BYTELIST;
} else {
add = isParagraph ? NEWLINE : sep;
}
ByteList line = new ByteList(ix - (int) pos + add.length());
line.append(internal.getByteList(), (int) pos, ix - (int) pos);
line.append(add);
pos = ix + add.realSize;
lineno++;
return RubyString.newString(runtime, line);
}
return runtime.getNil();
}
private IRubyObject internalSepGets(ByteList sep) throws IOException {
ByteList result = new ByteList();
int ce = io.read();
while (ce != -1 && sep.indexOf(ce) == -1) {
result.append((byte) ce);
ce = io.read();
}
// io.available() only returns 0 after EOF is encountered
// so we need to differentiate between the empty string and EOF
if (0 == result.length() && -1 == ce) {
return getRuntime().getNil();
}
line++;
result.append(sep);
return RubyString.newString(getRuntime(), result);
}
private IRubyObject internalGets(ThreadContext context, IRubyObject[] args) {
Ruby runtime = context.runtime;
if (!isEndOfString() && !data.eof) {
boolean isParagraph = false;
boolean is19 = runtime.is1_9();
ByteList sep = ((RubyString) runtime.getGlobalVariables().get("$/")).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();
}
