Examples of org.jruby.util.ByteList

org.jruby.util.ByteList


        // we limit to int because ByteBuffer can only allocate int sizes
        if (len > 0 && Integer.MAX_VALUE / len < value.length()) {
            throw context.getRuntime().newArgumentError("argument too big");
        }
        ByteList newBytes = new ByteList(value.length() * (int)len);


        for (int i = 0; i < len; i++) {
            newBytes.append(value);
        }


        RubyString newString = new RubyString(context.getRuntime(), getMetaClass(), newBytes);
        newString.setTaint(isTaint());
        return newString;

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    @JRubyMethod(name = "reverse")
    public RubyString reverse(ThreadContext context) {
        if (value.length() <= 1) return strDup(context.getRuntime());


        ByteList buf = new ByteList(value.length()+2);
        buf.realSize = value.length();
        int src = value.length() - 1;
        int dst = 0;
        
        while (src >= 0) buf.set(dst++, value.get(src--));


        RubyString rev = new RubyString(context.getRuntime(), getMetaClass(), buf);
        rev.infectBy(this);
        return rev;
    }

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    @JRubyMethod
    public IRubyObject insert(ThreadContext context, IRubyObject indexArg, IRubyObject stringArg) {
        // MRI behavior: first check for ability to convert to String...
        RubyString s = (RubyString)stringArg.convertToString();
        ByteList insert = s.value;


        // ... and then the index
        int index = (int) indexArg.convertToInteger().getLongValue();
        if (index < 0) index += value.length() + 1;

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    private ByteList inspectIntoByteList(boolean ignoreKCode) {
        Ruby runtime = getRuntime();
        Encoding enc = runtime.getKCode().getEncoding();
        final int length = value.length();
        ByteList sb = new ByteList(length + 2 + length / 100);


        sb.append('\"');


        for (int i = 0; i < length; i++) {
            int c = value.get(i) & 0xFF;
            
            if (!ignoreKCode) {
                int seqLength = enc.length((byte)c);
                
                if (seqLength > 1 && (i + seqLength -1 < length)) {
                    // don't escape multi-byte characters, leave them as bytes
                    sb.append(value, i, seqLength);
                    i += seqLength - 1;
                    continue;
                }
            } 
            
            if (isAlnum(c)) {
                sb.append((char)c);
            } else if (c == '\"' || c == '\\') {
                sb.append('\\').append((char)c);
            } else if (c == '#' && isEVStr(i, length)) {
                sb.append('\\').append((char)c);
            } else if (isPrint(c)) {
                sb.append((char)c);
            } else if (c == '\n') {
                sb.append('\\').append('n');
            } else if (c == '\r') {
                sb.append('\\').append('r');
            } else if (c == '\t') {
                sb.append('\\').append('t');
            } else if (c == '\f') {
                sb.append('\\').append('f');
            } else if (c == '\u000B') {
                sb.append('\\').append('v');
            } else if (c == '\u0007') {
                sb.append('\\').append('a');
            } else if (c == '\u0008') {
                sb.append('\\').append('b');
            } else if (c == '\u001B') {
                sb.append('\\').append('e');
            } else {
                sb.append(ByteList.plain(Sprintf.sprintf(runtime,"\\%03o",c)));
            }
        }


        sb.append('\"');
        return sb;
    }

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    /** rb_str_crypt
     *
     */
    @JRubyMethod(name = "crypt")
    public RubyString crypt(ThreadContext context, IRubyObject other) {
        ByteList salt = stringValue(other).getByteList();
        if (salt.realSize < 2) {
            throw context.getRuntime().newArgumentError("salt too short(need >=2 bytes)");
        }


        salt = salt.makeShared(0, 2);
        RubyString s = RubyString.newStringShared(context.getRuntime(), JavaCrypt.crypt(salt, this.getByteList()));
        s.infectBy(this);
        s.infectBy(other);
        return s;
    }

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                Region region = matcher.getRegion();
                beg = region.beg[0];
                plen = region.end[0] - beg;
            }


            ByteList replValue = repl.value;
            if (replValue.realSize > plen) {
                modify(value.realSize + replValue.realSize - plen);
            } else {
                modify();
            }

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            frame.setBackRef(context.getRuntime().getNil());
            return bang ? context.getRuntime().getNil() : strDup(context.getRuntime()); /* bang: true, no match, no substitution */
        }


        int blen = value.realSize + 30; /* len + margin */
        ByteList dest = new ByteList(blen);
        dest.realSize = blen;
        int buf = 0;
        int bp = 0;
        int cp = begin;


        int offset = 0;
        RubyString val;


        RubyMatchData match = null;
        while (beg >= 0) {
            final int begz;
            final int endz;
            if (iter) {
                byte[] bytes = value.bytes;
                int size = value.realSize;
                match = rubyRegex.updateBackRef(context, this, frame, matcher);
                match.use();
                if (regex.numberOfCaptures() == 0) {
                    begz = matcher.getBegin();
                    endz = matcher.getEnd();
                    val = objAsString(context, block.yield(context, substr(context.getRuntime(), begz, endz - begz)));
                } else {
                    Region region = matcher.getRegion();
                    begz = region.beg[0];
                    endz = region.end[0];
                    val = objAsString(context, block.yield(context, substr(context.getRuntime(), begz, endz - begz)));
                }
                modifyCheck(bytes, size);
                if (bang) {
                    frozenCheck();
                }
            } else {
                val = rubyRegex.regsub((RubyString) repl, this, matcher);
                if (regex.numberOfCaptures() == 0) {
                    begz = matcher.getBegin();
                    endz = matcher.getEnd();
                } else {
                    Region region = matcher.getRegion();
                    begz = region.beg[0];
                    endz = region.end[0];
                }
            }


            if (val.isTaint()) {
                tainted = true;
            }
            ByteList vbuf = val.value;
            int len = (bp - buf) + (beg - offset) + vbuf.realSize + 3;
            if (blen < len) {
                while (blen < len) {
                    blen <<= 1;
                }

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        return pos == -1 ? context.getRuntime().getNil() : RubyFixnum.newFixnum(context.getRuntime(), pos);
    }
    
    private int strIndex(RubyString sub, int offset) {
        ByteList byteList = value;
        if (offset < 0) {
            offset += byteList.realSize;
            if (offset < 0) return -1;
        }
        
        ByteList other = sub.value;
        if (sizeIsSmaller(byteList, offset, other)) return -1;
        if (other.realSize == 0) return offset;
        return byteList.indexOf(other, offset);
    }

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                    return context.getRuntime().getTrue();
                }
            }
            return context.getRuntime().getFalse();
        }
        ByteList str = stringValue(obj).value;
        return context.getRuntime().newBoolean(value.indexOf(str) != -1);
    }

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        byte[]fbuf;
        
        IRubyObject pad;


        pad = arg1.convertToString();
        ByteList fList = ((RubyString)pad).value;
        f = fList.begin;
        flen = fList.realSize;


        if (flen == 0) throw runtime.newArgumentError("zero width padding");

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