Examples of org.pdf4j.saxon.om.FastStringBuffer

org.pdf4j.saxon.om.FastStringBuffer
A simple implementation of a class similar to StringBuffer. Unlike StringBuffer it is not synchronized. It also offers the capability to remove unused space. (This class could possibly be replaced by StringBuilder in JDK 1.5, but using our own class gives more control.)

        it = iter.next();
        if (it==null) {
            return StringValue.makeStringValue(first);
        }


        FastStringBuffer sb = new FastStringBuffer(1024);
        sb.append(first);


        // Type checking ensures that the separator is not an empty sequence
        CharSequence sep = argument[1].evaluateItem(c).getStringValueCS();
        sb.append(sep);
        sb.append(it.getStringValueCS());


        while (true) {
            it = iter.next();
            if (it == null) {
                return StringValue.makeStringValue(sb.condense());
            }
            sb.append(sep);
            sb.append(it.getStringValueCS());
        }
    }

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                if (eq > 0 && eq < (tok.length()-1)) {
                    String keyword = tok.substring(0, eq);
                    String value = tok.substring(eq+1);


                    if (keyword.equals("select")) {
                        FastStringBuffer sb = new FastStringBuffer(value.length() + 6);
                        sb.append('^');
                        for (int i=0; i<value.length(); i++) {
                            char c = value.charAt(i);
                            if (c == '.') {
                                // replace "." with "\."
                                sb.append("\\.");
                            } else if (c == '*') {
                                // replace "*" with ".*"
                                sb.append(".*");
                            } else {
                                sb.append(c);
                            }
                        }
                        sb.append('$');
                        String s = sb.toString();
                        Pattern pattern = Pattern.compile(s);
                        filter = new RegexFilter(pattern);
                    } else if (keyword.equals("recurse")) {
                        recurse = Boolean.valueOf("yes".equals(value));
                    } else if (keyword.equals("validation")) {

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     *         that is it uses the timezone contained within the value itself.
     */


    public CharSequence getStringValueCS() {


        FastStringBuffer sb = new FastStringBuffer(30);
        int yr = year;
        if (year <= 0) {
            sb.append('-');
            yr = -yr + 1;    // no year zero in lexical space
        }
        appendString(sb, yr, (yr > 9999 ? (yr + "").length() : 4));
        sb.append('-');
        appendTwoDigits(sb, month);
        sb.append('-');
        appendTwoDigits(sb, day);
        sb.append('T');
        appendTwoDigits(sb, hour);
        sb.append(':');
        appendTwoDigits(sb, minute);
        sb.append(':');
        appendTwoDigits(sb, second);
        if (microsecond != 0) {
            sb.append('.');
            int ms = microsecond;
            int div = 100000;
            while (ms > 0) {
                int d = ms / div;
                sb.append((char)(d + '0'));
                ms = ms % div;
                div /= 10;
            }
        }

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            return TinyTextImpl.getStringValue(tree, next);
        }


        // now handle the general case


        FastStringBuffer sb = null;
        while (next < tree.numberOfNodes && tree.depth[next] > level) {
            final byte kind = tree.nodeKind[next];
            if (kind==Type.TEXT) {
//                int length = tree.beta[next];
//                int start = tree.alpha[next];
                if (sb==null) {
                    sb = new FastStringBuffer(1024);
                }
                //sb.append(tree.charBuffer, start, length);
                //sb.append(tree.charBuffer.subSequence(start, start+length));
                sb.append(TinyTextImpl.getStringValue(tree, next));
            } else if (kind==Type.WHITESPACE_TEXT) {
                if (sb==null) {
                    sb = new FastStringBuffer(1024);
                }
                WhitespaceTextImpl.appendStringValue(tree, next, sb);
            }
            next++;
        }
        if (sb==null) return "";
        return sb.condense();
    }

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        }
    }


    public CharSequence getStringValueCS() {


        FastStringBuffer sb = new FastStringBuffer(16);


        sb.append("---");
        appendTwoDigits(sb, day);


        if (hasTimezone()) {
            appendTimezone(sb);
        }

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    public static CharSequence applyWhitespaceNormalization(int action, CharSequence value) {
        switch (action) {
            case PRESERVE:
                return value;
            case REPLACE:
                FastStringBuffer sb = new FastStringBuffer(value.length());
                for (int i=0; i<value.length(); i++) {
                    char c = value.charAt(i);
                    switch (c) {
                        case '\n':
                        case '\r':
                        case '\t':
                            sb.append(' ');
                            break;
                        default:
                            sb.append(c);
                    }
                }
                return sb;
            case COLLAPSE:
                return collapseWhitespace(value);

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     * if it contained no whitespace
     */


    public static CharSequence removeAllWhitespace(CharSequence value) {
        if (containsWhitespace(value)) {
            FastStringBuffer sb = new FastStringBuffer(value.length());
            for (int i=0; i<value.length(); i++) {
                char c = value.charAt(i);
                if (c > 32 || !C0WHITE[c]) {
                    sb.append(c);
                }
            }
            return sb;
        } else {
            return value;

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     * @return a copy of the string in which any whitespace character is replaced by
     * a single space character
    */


    public static CharSequence normalizeWhitespace(CharSequence in) {
        FastStringBuffer sb = new FastStringBuffer(in.length());
        for (int i=0; i<in.length(); i++) {
            char c = in.charAt(i);
            switch (c) {
                case '\n':
                case '\r':
                case '\t':
                    sb.append(' ');
                    break;
                default:
                    sb.append(c);
                    break;
            }
        }
        return sb;
    }

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        int len = in.length();
        if (len==0 || !containsWhitespace(in)) {
            return in;
        }


        FastStringBuffer sb = new FastStringBuffer(len);
        boolean inWhitespace = true;
        int i = 0;
        for (; i<len; i++) {
            char c = in.charAt(i);
            switch (c) {
                case '\n':
                case '\r':
                case '\t':
                case ' ':
                    if (inWhitespace) {
                        // remove the whitespace
                    } else {
                        sb.append(' ');
                        inWhitespace = true;
                    }
                    break;
                default:
                    sb.append(c);
                    inWhitespace = false;
                    break;
            }
        }
        int nlen = sb.length();
        if (nlen>0 && sb.charAt(nlen-1)==' ') {
            sb.setLength(nlen-1);
        }
        return sb;
    }

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        }
    }


    public CharSequence getStringValueCS() {


        FastStringBuffer sb = new FastStringBuffer(16);


        sb.append("--");
        appendTwoDigits(sb, month);
        sb.append('-');
        appendTwoDigits(sb, day);


        if (hasTimezone()) {
            appendTimezone(sb);
        }

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