jruby/core/src/main/java/org/jruby/util/Sprintf.java at master · jruby/jruby · GitHub

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/***** BEGIN LICENSE BLOCK *****

* Version: EPL 2.0/GPL 2.0/LGPL 2.1

* The contents of this file are subject to the Eclipse Public

* License Version 2.0 (the "License"); you may not use this file

* except in compliance with the License. You may obtain a copy of

* the License at http://www.eclipse.org/legal/epl-v20.html

* Software distributed under the License is distributed on an "AS

* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or

* implied. See the License for the specific language governing

* rights and limitations under the License.

* Alternatively, the contents of this file may be used under the terms of

* either of the GNU General Public License Version 2 or later (the "GPL"),

* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),

* in which case the provisions of the GPL or the LGPL are applicable instead

* of those above. If you wish to allow use of your version of this file only

* under the terms of either the GPL or the LGPL, and not to allow others to

* use your version of this file under the terms of the EPL, indicate your

* decision by deleting the provisions above and replace them with the notice

* and other provisions required by the GPL or the LGPL. If you do not delete

* the provisions above, a recipient may use your version of this file under

* the terms of any one of the EPL, the GPL or the LGPL.

***** END LICENSE BLOCK *****/

package org.jruby.util;

import java.math.BigInteger;

import java.text.DecimalFormatSymbols;

import java.text.NumberFormat;

import java.util.HashMap;

import java.util.Locale;

import java.util.Map;

import org.jcodings.Encoding;

import org.jcodings.exception.EncodingException;

import org.jcodings.specific.UTF8Encoding;

import org.jruby.*;

import org.jruby.api.Warn;

import org.jruby.common.IRubyWarnings.ID;

import org.jruby.runtime.ThreadContext;

import org.jruby.runtime.builtin.IRubyObject;

import org.jruby.util.io.EncodingUtils;

import static org.jruby.api.Access.fixnumClass;

import static org.jruby.api.Access.integerClass;

import static org.jruby.api.Access.stringClass;

import static org.jruby.api.Convert.asFixnum;

import static org.jruby.api.Convert.asInteger;

import static org.jruby.api.Convert.toLong;

import static org.jruby.api.Create.newString;

import static org.jruby.api.Error.argumentError;

import static org.jruby.api.Error.typeError;

import static org.jruby.api.Warn.warn;

import static org.jruby.runtime.Helpers.arrayOf;

public class Sprintf {

private static final int FLAG_NONE = 0;

private static final int FLAG_SPACE = 1;

private static final int FLAG_ZERO = 1 << 1;

private static final int FLAG_PLUS = 1 << 2;

private static final int FLAG_MINUS = 1 << 3;

private static final int FLAG_SHARP = 1 << 4;

private static final int FLAG_WIDTH = 1 << 5;

private static final int FLAG_PRECISION = 1 << 6;

private static final byte[] PREFIX_OCTAL = {'0'};

private static final byte[] PREFIX_HEX_LC = {'0','x'};

private static final byte[] PREFIX_HEX_UC = {'0','X'};

private static final byte[] PREFIX_BINARY_LC = {'0','b'};

private static final byte[] PREFIX_BINARY_UC = {'0','B'};

private static final byte[] PREFIX_NEGATIVE = {'.','.'};

private static final byte[] NAN_VALUE = {'N','a','N'};

private static final byte[] INFINITY_VALUE = {'I','n','f'};

private static final BigInteger BIG_32 = BigInteger.valueOf(((long)Integer.MAX_VALUE + 1L) << 1);

private static final BigInteger BIG_64 = BIG_32.shiftLeft(32);

private static final BigInteger BIG_MINUS_32 = BigInteger.valueOf((long)Integer.MIN_VALUE << 1);

private static final BigInteger BIG_MINUS_64 = BIG_MINUS_32.shiftLeft(32);

private static final String ERR_MALFORMED_FORMAT = "malformed format string";

private static final String ERR_MALFORMED_NUM = "malformed format string - %[0-9]";

private static final String ERR_MALFORMED_DOT_NUM = "malformed format string - %.[0-9]";

private static final String ERR_MALFORMED_STAR_NUM = "malformed format string - %*[0-9]";

private static final String ERR_ILLEGAL_FORMAT_CHAR = "illegal format character - %";

private static final String ERR_INCOMPLETE_FORMAT_SPEC = "incomplete format specifier; use %% (double %) instead";

private static final String ERR_MALFORMED_NAME = "malformed name - unmatched parenthesis";

private static final ThreadLocal<Map<Locale, NumberFormat>> LOCALE_NUMBER_FORMATS = new ThreadLocal<Map<Locale, NumberFormat>>();

private static final ThreadLocal<Map<Locale, DecimalFormatSymbols>> LOCALE_DECIMAL_FORMATS = new ThreadLocal<Map<Locale, DecimalFormatSymbols>>();

private static final class Args {

private final Ruby runtime;

private final Locale locale;

private final IRubyObject rubyObject;

private final RubyArray rubyArray;

private final RubyHash rubyHash;

private final int length;

private int positionIndex; // last index (+1) accessed by next()

private int nextIndex;

private IRubyObject nextObject;

Args(Locale locale, IRubyObject rubyObject) {

if (rubyObject == null) throw new IllegalArgumentException("null IRubyObject passed to sprintf");

this.locale = locale == null ? Locale.getDefault() : locale;

this.rubyObject = rubyObject;

if (rubyObject instanceof RubyArray) {

this.rubyArray = (RubyArray)rubyObject;

if (rubyArray.last(rubyArray.getRuntime().getCurrentContext()) instanceof RubyHash) {

this.rubyHash = (RubyHash) rubyArray.pop(rubyArray.getRuntime().getCurrentContext());

} else {

this.rubyHash = null;

}

this.length = rubyArray.size();

} else if (rubyObject instanceof RubyHash) {

// allow a hash for args if in 1.9 mode

this.rubyHash = (RubyHash)rubyObject;

this.rubyArray = null;

this.length = 1;

} else {

this.length = 1;

this.rubyArray = null;

this.rubyHash = null;

}

positionIndex = 0;

nextIndex = 1;

this.runtime = rubyObject.getRuntime();

}

Args(IRubyObject rubyObject) {

this(Locale.getDefault(),rubyObject);

}

// temporary hack to handle non-Ruby values

// will come up with better solution shortly

Args(Ruby runtime, long value) {

this(RubyFixnum.newFixnum(runtime, value));

}

void raiseArgumentError(String message) {

throw argumentError(runtime.getCurrentContext(), message);

}

void raiseKeyError(String message, IRubyObject recv, IRubyObject key) {

throw runtime.newKeyError(message, recv, key);

}

void warn(ID id, String message) {

runtime.getWarnings().warn(id, message);

}

private IRubyObject getHashValue(ByteList name, char startDelim, char endDelim) {

// FIXME: get_hash does hash conversion of argv and arity check...this is a bit complicated with

// our version. Implement it.

if (rubyHash == null) {

raiseArgumentError("one hash required");

}

checkNameArg(name, startDelim, endDelim);

RubySymbol nameSym = runtime.newSymbol(name);

IRubyObject object = rubyHash.fastARef(nameSym);

// if not found, try dispatching to pick up default hash value

// MRI: spliced together bits from rb_hash_default_value

if (object == null) {

object = rubyHash.getIfNone();

if (object == RubyBasicObject.UNDEF) {

RubyString nameStr = newString(runtime.getCurrentContext(), name);

raiseKeyError("key" + startDelim + nameStr + endDelim + " not found", rubyHash, nameSym);

} else if (rubyHash.hasDefaultProc()) {

object = object.callMethod(runtime.getCurrentContext(), "call", arrayOf(rubyHash, nameSym));

}

if (object.isNil()) throw runtime.newKeyError("key" + startDelim + nameSym + endDelim + " not found", rubyHash, nameSym);

}

return object;

}

private IRubyObject getNthArg(int index) {

if (index > length) {

if (index == length + 1 && rubyHash != null) {

return rubyHash;

}

raiseArgumentError("too few arguments");

}

return rubyArray == null ? rubyObject : rubyArray.eltInternal(index - 1);

}

// MRI: GETARG

private IRubyObject getArg() {

final IRubyObject nextObject = this.nextObject;

if (nextObject != null) {

// This is different in MRI. The do a retry and avoid part of the for loop

// which resets nextvalue. We do not do that so we null out here since we

// cannot get same value twice.

this.nextObject = null;

return nextObject;

}

return getNextArg();

}

// MRI: GETNEXTARG

private IRubyObject getNextArg() {

checkNextArg();

positionIndex = nextIndex++;

return getNthArg(positionIndex);

}

// MRI: GETPOSARG

private IRubyObject getPositionArg(int index) {

checkPositionArg(index);

positionIndex = -1;

return getNthArg(index);

}

// MRI: check_next_arg

private void checkNextArg() {

if (positionIndex == -1) raiseArgumentError("unnumbered(" + nextIndex + ") mixed with numbered");

if (positionIndex == -2) raiseArgumentError("unnumbered(" + nextIndex + ") mixed with named");

}

// MRI: check_pos_arg

private void checkPositionArg(int nthArg) {

if (positionIndex > 0) raiseArgumentError("numbered(" + nthArg + ") after unnumbered(" + positionIndex + ")");

if (positionIndex == -2) raiseArgumentError("numbered(" + nthArg + ") after named");

if (nthArg < 1) raiseArgumentError("invalid index - " + nthArg + "$");

}

// MRI: check_name_arg, CHECKNAMEARG

private void checkNameArg(ByteList name, char startDelim, char endDelim) {

if (positionIndex > 0) raiseArgumentError("named" + startDelim + RubyString.newString(runtime, name) + endDelim + " after unnumbered(" + positionIndex + ")");

if (positionIndex == -1) raiseArgumentError("named" + startDelim + RubyString.newString(runtime, name) + endDelim + " after numbered");

positionIndex = -2;

}

int intValue(ThreadContext context, IRubyObject obj) {

if (obj instanceof RubyNumeric num) return num.asInt(context);

// basically just forcing a TypeError here to match MRI

obj = TypeConverter.convertToType(obj, fixnumClass(context), "to_int", true);

return ((RubyFixnum)obj).asInt(context);

}

byte getDecimalSeparator() {

return (byte)getDecimalFormat(locale).getDecimalSeparator();

}

} // Args

// static methods only

private Sprintf () {}

// Special form of sprintf that returns a RubyString.

public static boolean sprintf(ByteList to, Locale locale, CharSequence format, IRubyObject args) {

rubySprintfToBuffer(to, format, new Args(locale, args));

return false;

}

// Special form of sprintf that returns a RubyString. Version for 1.9.

public static boolean sprintf1_9(ByteList to, Locale locale, CharSequence format, IRubyObject args) {

rubySprintfToBuffer(to, format, new Args(locale, args), false);

return false;

}

public static boolean sprintf(ByteList to, CharSequence format, IRubyObject args) {

rubySprintf(to, format, new Args(args));

return false;

}

public static ByteList sprintf(Encoding encoding, CharSequence format, IRubyObject args) {

ByteList to = new ByteList(16, encoding);

rubySprintfToBuffer(to, format, new Args(args), false);

return to;

}

public static boolean sprintf(Ruby runtime, ByteList to, CharSequence format, int arg) {

rubySprintf(to, format, new Args(runtime, (long)arg));

return false;

}

public static boolean sprintf(Ruby runtime, ByteList to, CharSequence format, long arg) {

rubySprintf(to, format, new Args(runtime, arg));

return false;

}

public static boolean sprintf(ByteList to, RubyString format, IRubyObject args) {

rubySprintf(to, format.getByteList(), new Args(args));

return false;

}

private static void rubySprintf(ByteList to, CharSequence charFormat, Args args) {

rubySprintfToBuffer(to, charFormat, args);

}

private static void rubySprintfToBuffer(ByteList buf, CharSequence charFormat, Args args) {

rubySprintfToBuffer(buf, charFormat, args, true);

}

private static void rubySprintfToBuffer(final ByteList buf, final CharSequence charFormat,

final Args args, final boolean usePrefixForZero) {

ThreadContext context = args.runtime.getCurrentContext();

final byte[] format;

Encoding encoding;

int offset, length;

if (charFormat instanceof ByteList) {

ByteList list = (ByteList)charFormat;

format = list.getUnsafeBytes();

int begin = list.begin();

offset = begin;

length = begin + list.length();

encoding = list.getEncoding();

} else {

format = stringToBytes(charFormat);

offset = 0;

length = charFormat.length();

encoding = UTF8Encoding.INSTANCE;

}

while (offset < length) {

ByteList name = null;

final int start = offset;

for ( ; offset < length && format[offset] != '%'; offset++) {}

if (offset > start) {

buf.append(format, start, offset - start);

// start = offset;

}

if (offset++ >= length) break;

IRubyObject arg;

int flags = 0;

int width = 0;

int precision = 0;

int number;

byte fchar;

boolean incomplete = true;

for ( ; incomplete && offset < length ; ) {

switch (fchar = format[offset]) {

default:

if (isPrintable(fchar)) {

raiseArgumentError(args, "malformed format string - %" + (char)fchar);

} else {

raiseArgumentError(args, ERR_MALFORMED_FORMAT);

}

break;

case ' ':

flags |= FLAG_SPACE;

offset++;

break;

case '+':

flags |= FLAG_PLUS;

offset++;

break;

case '-':

flags |= FLAG_MINUS;

offset++;

break;

case '#':

flags |= FLAG_SHARP;

offset++;

break;

case '0':

flags |= FLAG_ZERO;

offset++;

break;

case '1': case '2': case '3': case '4':

case '5': case '6': case '7': case '8': case '9':

// MRI doesn't flag it as an error if width is given multiple

// times as a number (but it does for *)

number = 0;

// GETNUM(n, width) :

for (; offset < length && isDigit(fchar = format[offset]); offset++) {

number = extendWidth(args, number, fchar, "width too big");

}

checkOffset(args, offset, length, ERR_MALFORMED_NUM);

if (fchar == '$') {

if (args.nextObject != null) {

raiseArgumentError(args,"value given twice - " + number + "$");

}

args.nextObject = args.getPositionArg(number);

offset++;

break;

}

if ((flags & FLAG_WIDTH) != 0) raiseArgumentError(args,"width given twice");

width = number;

flags |= FLAG_WIDTH;

break;

case '<': {

int nameStart = ++offset;

int nameEnd = nameStart;

for ( ; offset < length ; offset++) {

if (format[offset] == '>') {

nameEnd = offset;

offset++;

break;

}

if (nameEnd == nameStart) raiseArgumentError(args, ERR_MALFORMED_NAME);

ByteList newName = new ByteList(format, nameStart, nameEnd - nameStart, encoding, false);

if (name != null) raiseArgumentError(args, "named<" + newString(context, newName) + "> after <" + newString(context, name) + ">");

name = newName;

// we retrieve value from hash so we can generate argument error as side-effect.

args.nextObject = args.getHashValue(name, '<', '>');

break;

}

case '{': {

int nameStart = ++offset;

int nameEnd = nameStart;

for ( ; offset < length ; offset++) {

if (format[offset] == '}') {

nameEnd = offset;

offset++;

break;

}

if (nameEnd == nameStart) raiseArgumentError(args, ERR_MALFORMED_NAME);

ByteList localName = new ByteList(format, nameStart, nameEnd - nameStart, encoding, false);

IRubyObject value = args.getHashValue(localName, '{', '}');

RubyString str = (RubyString) TypeConverter.convertToType(value, stringClass(context), "to_s");

ByteList bytes = str.getByteList();

// peek to see if it has a format specifier. If not we need to handle it now.

if (offset < length && !isFormatSpecifier(format[offset]) || offset == length) {

int len = bytes.length();

Encoding enc = RubyString.checkEncoding(context.runtime, buf, bytes);

if ((flags & (FLAG_PRECISION|FLAG_WIDTH)) != 0) {

int strLen = str.strLength();

if ((flags & FLAG_PRECISION) != 0 && precision < strLen) {

strLen = precision;

len = StringSupport.nth(enc, bytes.getUnsafeBytes(), bytes.begin(), bytes.begin() + bytes.getRealSize(), precision);

if (len == -1) len = 0; // we might return -1 but MRI's rb_enc_nth does 0 for not-found

len = len - bytes.begin();

}

/* need to adjust multi-byte string pos */

if ((flags & FLAG_WIDTH) != 0 && width > strLen) {

width -= strLen;

if ((flags & FLAG_MINUS) == 0) {

buf.fill(' ', width);

width = 0;

}

buf.append(bytes.getUnsafeBytes(), bytes.begin(), len);

if ((flags & FLAG_MINUS) != 0) {

buf.fill(' ', width);

}

buf.setEncoding(enc);

offset++;

incomplete = false;

break;

}

} else {

buf.append(bytes);

incomplete = false;

}

} else {

buf.append(bytes);

incomplete = false;

}

break;

}

case '*':

if ((flags & FLAG_WIDTH) != 0) raiseArgumentError(args,"width given twice");

flags |= FLAG_WIDTH;

int[] p_width = GETASTER(context, args, format, offset, length, true);

offset = p_width[0]; width = p_width[1];

if (width < 0) {

flags |= FLAG_MINUS;

width = -width;

if (width < 0) throw argumentError(context, "width too big");

}

break;

case '.':

if ((flags & FLAG_PRECISION) != 0) {

raiseArgumentError(args,"precision given twice");

}

flags |= FLAG_PRECISION;

checkOffset(args, ++offset, length, ERR_MALFORMED_DOT_NUM);

fchar = format[offset];

if (fchar == '*') {

int[] p_prec = GETASTER(context, args, format, offset, length, false);

offset = p_prec[0]; precision = p_prec[1];

if (precision < 0) {

flags &= ~FLAG_PRECISION;

}

break;

}

// GETNUM(prec, precision) :

number = 0;

for ( ; offset < length && isDigit(fchar = format[offset]); offset++) {

number = extendWidth(args, number, fchar, "width too big");

}

checkOffset(args, offset, length, ERR_MALFORMED_DOT_NUM);

precision = number;

break;

case '%':

if (flags != FLAG_NONE) {

raiseArgumentError(args, ERR_ILLEGAL_FORMAT_CHAR);

}

buf.append('%');

offset++;

incomplete = false;

break;

case 'c': {

arg = args.getArg();

int c; int n;

IRubyObject tmp = arg.checkStringType();

if (!tmp.isNil()) {

if (((RubyString) tmp).strLength() == 0) {

c = 0;

n = 0;

} else {

ByteList bl = ((RubyString) tmp).getByteList();

c = StringSupport.codePoint(context, encoding, bl.unsafeBytes(), bl.begin(), bl.begin() + bl.realSize());

n = StringSupport.codeLength(bl.getEncoding(), c);

}

} else {

c = (int) toLong(context, arg) & 0xFFFFFFFF;

if (c >= 0) {

try {

n = StringSupport.codeLength(encoding, c);

} catch (EncodingException e) {

n = -1;

}

} else {

n = -1;

}

if (n <= 0) throw argumentError(context, "invalid character");

Encoding appendableEncoding = EncodingUtils.rbAscii8bitAppendableEncodingIndex(context, encoding, c);

if (appendableEncoding != null && appendableEncoding != encoding) {

buf.setEncoding(appendableEncoding);

encoding = appendableEncoding;

}

if ((flags & FLAG_WIDTH) == 0) {

buf.ensure(buf.length() + n);

EncodingUtils.encMbcput(context, c, buf.unsafeBytes(), buf.begin() + buf.realSize(), encoding);

buf.realSize(buf.realSize() + n);

} else if ((flags & FLAG_MINUS) != 0) {

buf.ensure(buf.length() + n);

EncodingUtils.encMbcput(context, c, buf.unsafeBytes(), buf.begin() + buf.realSize(), encoding);

buf.realSize(buf.realSize() + n);

buf.fill(' ', width - n);

} else {

buf.fill(' ', width - n);

buf.ensure(buf.length() + n);

EncodingUtils.encMbcput(context, c, buf.unsafeBytes(), buf.begin() + buf.realSize(), encoding);

buf.realSize(buf.realSize() + n);

}

offset++;

incomplete = false;

break;

}

case 'a':

case 'A': {

arg = args.getArg();

ByteList bytes = new ByteList();

final boolean positive = isPositive(context, arg);

double fval = RubyKernel.new_float(context, arg).asDouble(context);

boolean negative = fval < 0.0d || (fval == 0.0d && Double.doubleToLongBits(fval) == Double.doubleToLongBits(-0.0));

boolean isnan = Double.isNaN(fval);

boolean isinf = fval == Double.POSITIVE_INFINITY || fval == Double.NEGATIVE_INFINITY;

if (isnan || isinf) {

printSpecialValue(buf, flags, width, isnan, negative);

offset++;

incomplete = false;

break;

}

if ((flags & FLAG_MINUS) != 0) {

if (!positive) {

bytes.append('-');

} else if ((flags & FLAG_PLUS) != 0) {

bytes.append('+');

} else if ((flags & FLAG_SPACE) != 0) {

bytes.append(' ');

}

bytes.append('0');

bytes.append(fchar == 'a' ? 'x' : 'X');

}

precision = generateBinaryFloat(context, flags, precision, fchar, bytes, arg);

int bytesLength = bytes.length(); // We know numbers will be 7 bit ascii.

if ((flags & FLAG_MINUS) == 0) {

if (!positive) {

buf.append('-');

} else if ((flags & FLAG_PLUS) != 0) {

buf.append('+');

} else if ((flags & FLAG_SPACE) != 0) {

buf.append(' ');

}

if ((flags & FLAG_MINUS) == 0 && width <= bytesLength) {

buf.append('0');

buf.append(fchar == 'a' ? 'x' : 'X');

} else if (width > bytesLength) {

if ((flags & FLAG_ZERO) != 0) {

buf.append('0');

buf.append(fchar == 'a' ? 'x' : 'X');

buf.fill('0', width - bytesLength - 2);

} else if ((flags & FLAG_MINUS) == 0) {

buf.fill(' ', width - bytesLength - 2);

buf.append('0');

buf.append(fchar == 'a' ? 'x' : 'X');

}

buf.append(bytes);

if (width > bytesLength && ((flags & FLAG_MINUS) != 0)) {

buf.fill(' ', width - bytesLength);

}

offset++;

incomplete = false;

break;

}

case 'p':

case 's': { // format_s:

arg = args.getArg();

if (fchar == 'p') {

arg = arg.callMethod(context, "inspect");

}

RubyString str = arg.asString();

ByteList bytes = str.getByteList();

int len = bytes.length();

Encoding enc = RubyString.checkEncoding(context.runtime, buf, bytes);

if ((flags & (FLAG_PRECISION|FLAG_WIDTH)) != 0) {

int strLen = str.strLength();

if ((flags & FLAG_PRECISION) != 0 && precision < strLen) {

strLen = precision;

len = StringSupport.nth(enc, bytes.getUnsafeBytes(), bytes.begin(), bytes.begin() + bytes.getRealSize(), precision);

if (len == -1) len = 0; // we might return -1 but MRI's rb_enc_nth does 0 for not-found

len = len - bytes.begin();

}

/* need to adjust multi-byte string pos */

if ((flags & FLAG_WIDTH) != 0 && width > strLen) {

width -= strLen;

if ((flags & FLAG_MINUS) == 0) {

buf.fill(' ', width);

width = 0;

}

buf.append(bytes.getUnsafeBytes(), bytes.begin(), len);

if ((flags & FLAG_MINUS) != 0) {

buf.fill(' ', width);

}

buf.setEncoding(enc);

offset++;

incomplete = false;

break;

}

buf.append(bytes.getUnsafeBytes(), bytes.begin(), len);

buf.setEncoding(enc);

offset++;

incomplete = false;

break;

}

case 'd':

case 'i':

case 'o':

case 'x':

case 'X':

case 'b':

case 'B':

case 'u': {

arg = args.getArg();

switch (arg.getMetaClass().getClassIndex()) {

case INTEGER: // no-op

break;

case FLOAT:

arg = asInteger(context, ((RubyFloat) arg).asDouble(context));

break;

case STRING:

arg = ((RubyString) arg).stringToInum(0, true);

break;

default:

arg = TypeConverter.convertToInteger(context, arg, 0);

if (!(arg instanceof RubyInteger)) throw typeError(context, arg, integerClass(context));

break;

}

byte[] bytes;

int first = 0;

final boolean sign, negative;

byte signChar = 0;

byte leadChar = 0;

switch (fchar) {

case 'd':

case 'i':

fchar = 'd'; // 'd' and 'i' are the same

sign = true; break;

case 'u':

if ((flags & (FLAG_PLUS|FLAG_SPACE)) != 0) fchar = 'd';

sign = true; break;

case 'o': case 'x': case 'X': case 'b': case 'B':

sign = (flags & (FLAG_PLUS|FLAG_SPACE)) != 0; break;

default:

sign = false; break;

}

final int base;

switch (fchar) {

case 'o':

base = 8; break;

case 'x': case 'X':

base = 16; break;

case 'b': case 'B':

base = 2; break;

// case 'u': case 'd': case 'i':

default:

base = 10; break;

}

// We depart here from strict adherence to MRI code, as MRI

// uses C-sprintf, in part, to format numeric output, while

// we'll use Java's numeric formatting code (and our own).

boolean zero;

if (arg instanceof RubyFixnum fixnum) {

final long v = fixnum.getValue();

negative = v < 0;

zero = v == 0;

if (negative && fchar == 'u') {

bytes = getUnsignedNegativeBytes(v);

} else {

bytes = getFixnumBytes(v, base, sign, fchar == 'X');

}

} else {

final BigInteger v = ((RubyBignum) arg).getValue();

negative = v.signum() < 0;

zero = v.signum() == 0;

if (negative && fchar == 'u' && usePrefixForZero) {

bytes = getUnsignedNegativeBytes(v);

} else {

bytes = getBignumBytes(v, base, sign, fchar == 'X');

}

byte[] prefix = null;

if ((flags & FLAG_SHARP) != 0) {

if (!zero || usePrefixForZero) {

switch (fchar) {

case 'o': if (!negative) prefix = PREFIX_OCTAL; break;

case 'x': prefix = PREFIX_HEX_LC; break;

case 'X': prefix = PREFIX_HEX_UC; break;

case 'b': prefix = PREFIX_BINARY_LC; break;

case 'B': prefix = PREFIX_BINARY_UC; break;

}

if (prefix != null) width -= prefix.length;

}

int len = 0;

if (sign) {

if (negative) {

signChar = '-';

width--;

first = 1; // skip '-' in bytes, will add where appropriate

} else if ((flags & FLAG_PLUS) != 0) {

signChar = '+';

width--;

} else if ((flags & FLAG_SPACE) != 0) {

signChar = ' ';

width--;

}

} else if (negative) {

if (base == 10) {

Warn.warning(context, "negative number for %u specifier");

leadChar = '.';

len += 2;

} else {

if ((flags & (FLAG_PRECISION | FLAG_ZERO)) == 0) len += 2; // ..

first = skipSignBits(bytes, base);

switch(fchar) {

case 'b':

case 'B':

leadChar = '1';

break;

case 'o':

leadChar = '7';

break;

case 'x':

leadChar = 'f';

break;

case 'X':

leadChar = 'F';

break;

}

if (leadChar != 0) len++;

}

int numlen = bytes.length - first;

switch (fchar) {

case 'd': case 'i': case 'u':

// If the precision is 0 and the value is 0, nothing is written.

if ((flags & FLAG_PRECISION) != 0 && precision == 0 && zero) {

numlen = 0;

}

len += numlen;

if ((flags & (FLAG_ZERO|FLAG_PRECISION)) == FLAG_ZERO) {

precision = width;

width = 0;

} else {

if (precision < len) precision = len;

width -= precision;

}

if ((flags & FLAG_MINUS) == 0) {

buf.fill(' ', width);

width = 0;

}

if (signChar != 0) buf.append(signChar);

if (prefix != null) buf.append(prefix);

if (len < precision) {

if (leadChar == 0) {

if (fchar != 'd' || usePrefixForZero || !negative ||

(flags & FLAG_PRECISION) != 0 ||

((flags & FLAG_ZERO) != 0 && (flags & FLAG_MINUS) == 0)) {

buf.fill('0', precision - len);

}

} else if (leadChar == '.') {

buf.fill(leadChar, precision - len);

buf.append(PREFIX_NEGATIVE);

} else if (!usePrefixForZero) {

buf.append(PREFIX_NEGATIVE);

buf.fill(leadChar, precision - len - 1);

} else {

buf.fill(leadChar, precision - len + 1); // the 1 is for the stripped sign char

}

} else if (leadChar != 0) {

if (((flags & (FLAG_PRECISION | FLAG_ZERO)) == 0 && usePrefixForZero) ||

(!usePrefixForZero && "xXbBo".indexOf(fchar) != -1)) {

buf.append(PREFIX_NEGATIVE);

}

if (leadChar != '.') buf.append(leadChar);

}

buf.append(bytes, first, numlen);

if (width > 0) buf.fill(' ',width);

if (len < precision && fchar == 'd' && negative &&

!usePrefixForZero && (flags & FLAG_MINUS) != 0) {

buf.fill(' ', precision - len);

}

offset++;

incomplete = false;

break;

}

case 'f': {

arg = args.getArg();

RubyInteger num, den;

byte sign = (flags & FLAG_PLUS) != 0 ? (byte) 1 : (byte) 0; int zero = 0;

if (arg instanceof RubyInteger) {

den = asFixnum(context, 1);

num = (RubyInteger) arg;

}

else if (arg instanceof RubyRational) {

den = ((RubyRational) arg).getDenominator();

num = ((RubyRational) arg).getNumerator();

}

else {

args.nextObject = arg;

// goto float_value;

num = null; den = null;

}

if (num != null) { // else -> goto float_value;

if ((flags & FLAG_PRECISION) == 0) precision = 6; // default_float_precision;

if (num.isNegativeNumber(context)) {

num = (RubyInteger) num.op_uminus(context);

sign = -1;

}

if (!(den instanceof RubyFixnum fixnum) || fixnum.getValue() != 1) {

num = (RubyInteger) num.op_mul(context, Numeric.int_pow(context, 10, precision));

num = (RubyInteger) num.op_plus(context, den.idiv(context, 2));

num = (RubyInteger) num.idiv(context, den);

}

else if (precision >= 0) {

zero = precision;

}

RubyString val = num.to_s(context);

int len = val.length() + zero;

if (precision >= len) len = precision + 1; // integer part 0

if (sign != 0 || (flags & FLAG_SPACE) != 0) ++len;

if (precision > 0) ++len; // period

int fill = width > len ? width - len : 0;

// CHECK(fill + len)

buf.ensure(buf.length() + fill + len);

if (fill > 0 && (flags & (FLAG_MINUS|FLAG_ZERO)) == 0) {

buf.fill(' ', fill);

}

if (sign != 0 || (flags & FLAG_SPACE) != 0) {

buf.append(sign > 0 ? '+' : sign < 0 ? '-' : ' ');

}

if (fill > 0 && (flags & (FLAG_MINUS|FLAG_ZERO)) == FLAG_ZERO) {

buf.fill('0', fill);

}

len = val.length() + zero;

// t = RSTRING_PTR(val);

if (len > precision) {

// PUSH_(t, len - prec) :

buf.append(val.getByteList(), 0, len - precision);

}

else {

buf.append('0');

}

if (precision > 0) {

buf.append('.');

}

if (zero > 0) {

buf.fill('0', zero);

}

else if (precision > len) {

buf.fill('0', precision - len);

// PUSH_(t, len) :

buf.append(val.getByteList(), 0, len);

}

else if (precision > 0) {

// PUSH_(t + len - prec, prec) :

buf.append(val.getByteList(), len - precision, precision);

}

if (fill > 0 && (flags & FLAG_MINUS) != 0) {

buf.fill(' ', fill);

}

offset++;

incomplete = false;

break;

}

case 'E':

case 'e':

case 'G':

case 'g':

float_value: {

arg = args.getArg();

double fval = RubyKernel.new_float(context, arg).asDouble(context);

boolean isnan = Double.isNaN(fval);

boolean isinf = fval == Double.POSITIVE_INFINITY || fval == Double.NEGATIVE_INFINITY;

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jruby/core/src/main/java/org/jruby/util/Sprintf.java at master · jruby/jruby · GitHub

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jruby/core/src/main/java/org/jruby/util/Sprintf.java at master · jruby/jruby · GitHub

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