pdfname.java

iText是一个能够快速产生PDF文件的java类库。iText的java类对于那些要产生包含文本

    public static final PdfName TITLE = new PdfName("Title");
    /** A name */
    public static final PdfName TK = new PdfName("TK");
    /** A name */
    public static final PdfName TM = new PdfName("TM");
    /** A name */
    public static final PdfName TOGGLE = new PdfName("Toggle");
    /** A name */
    public static final PdfName TOUNICODE = new PdfName("ToUnicode");
    /** A name */
    public static final PdfName TP = new PdfName("TP");
    /** A name */
    public static final PdfName TRANS = new PdfName("Trans");
    /** A name */
    public static final PdfName TRANSFORMPARAMS = new PdfName("TransformParams");
    /** A name */
    public static final PdfName TRANSFORMMETHOD = new PdfName("TransformMethod");
    /** A name */
    public static final PdfName TRANSPARENCY = new PdfName("Transparency");
    /** A name */
    public static final PdfName TRAPPED = new PdfName("Trapped");
    /** A name */
    public static final PdfName TRIMBOX = new PdfName("TrimBox");
    /** A name */
    public static final PdfName TRUETYPE = new PdfName("TrueType");
    /** A name */
    public static final PdfName TU = new PdfName("TU");
    /** A name */
    public static final PdfName TWOCOLUMNLEFT = new PdfName("TwoColumnLeft");
    /** A name */
    public static final PdfName TWOCOLUMNRIGHT = new PdfName("TwoColumnRight");
    /** A name */
    public static final PdfName TWOPAGELEFT = new PdfName("TwoPageLeft");
    /** A name */
    public static final PdfName TWOPAGERIGHT = new PdfName("TwoPageRight");
    /** A name */
    public static final PdfName TX = new PdfName("Tx");
    /** A name */
    public static final PdfName TYPE = new PdfName("Type");
    /** A name */
    public static final PdfName TYPE0 = new PdfName("Type0");
    /** A name */
    public static final PdfName TYPE1 = new PdfName("Type1");
    /** A name of an attribute. */
    public static final PdfName TYPE3 = new PdfName("Type3");
    /** A name of an attribute. */
    public static final PdfName U = new PdfName("U");
    /** A name of an attribute. */
    public static final PdfName UF = new PdfName("UF");
    /** A name of an attribute. */
    public static final PdfName UHC = new PdfName("UHC");
    /** A name of an attribute. */
    public static final PdfName UNDERLINE = new PdfName("Underline");
    /** A name */
    public static final PdfName UR = new PdfName("UR");
    /** A name */
    public static final PdfName UR3 = new PdfName("UR3");
    /** A name */
    public static final PdfName URI = new PdfName("URI");
    /** A name */
    public static final PdfName URL = new PdfName("URL");
    /** A name */
    public static final PdfName USAGE = new PdfName("Usage");
    /** A name */
    public static final PdfName USEATTACHMENTS = new PdfName("UseAttachments");
    /** A name */
    public static final PdfName USENONE = new PdfName("UseNone");
    /** A name */
    public static final PdfName USEOC = new PdfName("UseOC");
    /** A name */
    public static final PdfName USEOUTLINES = new PdfName("UseOutlines");
    /** A name */
    public static final PdfName USER = new PdfName("User");
    /** A name */
    public static final PdfName USERPROPERTIES = new PdfName("UserProperties");
    /** A name */
    public static final PdfName USERUNIT = new PdfName("UserUnit");
    /** A name */
    public static final PdfName USETHUMBS = new PdfName("UseThumbs");
    /** A name */
    public static final PdfName V = new PdfName("V");
    /** A name */
    public static final PdfName V2 = new PdfName("V2");
    /** A name */
    public static final PdfName VERISIGN_PPKVS = new PdfName("VeriSign.PPKVS");
    /** A name */
	public static final PdfName VERSION = new PdfName("Version");
    /** A name */
    public static final PdfName VIEW = new PdfName("View");
    /** A name */
    public static final PdfName VIEWAREA = new PdfName("ViewArea");
    /** A name */
    public static final PdfName VIEWCLIP = new PdfName("ViewClip");
    /** A name */
    public static final PdfName VIEWERPREFERENCES = new PdfName("ViewerPreferences");
    /** A name */
    public static final PdfName VIEWSTATE = new PdfName("ViewState");
    /** A name */
    public static final PdfName VISIBLEPAGES = new PdfName("VisiblePages");
    /** A name of an attribute. */
    public static final PdfName W = new PdfName("W");
    /** A name of an attribute. */
    public static final PdfName W2 = new PdfName("W2");
    /** A name of an attribute. */
    public static final PdfName WC = new PdfName("WC");
    /** A name of an attribute. */
    public static final PdfName WIDGET = new PdfName("Widget");
    /** A name of an attribute. */
    public static final PdfName WIDTH = new PdfName("Width");
    /** A name */
    public static final PdfName WIDTHS = new PdfName("Widths");
    /** A name of an encoding */
    public static final PdfName WIN = new PdfName("Win");
    /** A name of an encoding */
    public static final PdfName WIN_ANSI_ENCODING = new PdfName("WinAnsiEncoding");
    /** A name of an encoding */
    public static final PdfName WIPE = new PdfName("Wipe");
    /** A name */
    public static final PdfName WHITEPOINT = new PdfName("WhitePoint");
    /** A name */
    public static final PdfName WP = new PdfName("WP");
    /** A name of an encoding */
    public static final PdfName WS = new PdfName("WS");
    /** A name */
    public static final PdfName X = new PdfName("X");
    /** A name */
    public static final PdfName XFA = new PdfName("XFA");
    /** A name */
    public static final PdfName XML = new PdfName("XML");
    /** A name */
    public static final PdfName XOBJECT = new PdfName("XObject");
    /** A name */
    public static final PdfName XSTEP = new PdfName("XStep");
    /** A name */
    public static final PdfName XREF = new PdfName("XRef");
    /** A name */
    public static final PdfName XREFSTM = new PdfName("XRefStm");
    /** A name */
    public static final PdfName XYZ = new PdfName("XYZ");
    /** A name */
    public static final PdfName YSTEP = new PdfName("YStep");
    /** A name */
    public static final PdfName ZADB = new PdfName("ZaDb");
    /** A name of a base 14 type 1 font */
    public static final PdfName ZAPFDINGBATS = new PdfName("ZapfDingbats");
    /** A name */
    public static final PdfName ZOOM = new PdfName("Zoom");
    
    private int hash = 0;
    
    // constructors
    

    /**
     * Constructs a new <CODE>PdfName</CODE>. The name length will be checked.
     * @param name the new name
     */
    public PdfName(String name) {
        this(name, true);
    }
    
    /**
     * Constructs a new <CODE>PdfName</CODE>.
     * @param name the new name
     * @param lengthCheck if <CODE>true</CODE> check the lenght validity, if <CODE>false</CODE> the name can
     * have any length
     */
    
    public PdfName(String name, boolean lengthCheck) {
        super(PdfObject.NAME);
        // The minimum number of characters in a name is 0, the maximum is 127 (the '/' not included)
        int length = name.length();
        if (lengthCheck && length > 127) {
            throw new IllegalArgumentException("The name '" + name + "' is too long (" + length + " characters).");
        }
        // The name has to be checked for illegal characters
        // every special character has to be substituted
        ByteBuffer pdfName = new ByteBuffer(length + 20);
        pdfName.append('/');
        char character;
        char chars[] = name.toCharArray();
        // loop over all the characters
        for (int index = 0; index < length; index++) {
            character = (char)(chars[index] & 0xff);
            // special characters are escaped (reference manual p.39)
            switch (character) {
                case ' ':
                case '%':
                case '(':
                case ')':
                case '<':
                case '>':
                case '[':
                case ']':
                case '{':
                case '}':
                case '/':
                case '#':
                    pdfName.append('#');
                    pdfName.append(Integer.toString((int) character, 16));
                    break;
                default:
                    if (character > 126 || character < 32) {
                        pdfName.append('#');
                        if (character < 16)
                            pdfName.append('0');
                        pdfName.append(Integer.toString((int) character, 16));
                    }
                    else
                        pdfName.append(character);
                    break;
            }
        }
        bytes = pdfName.toByteArray();
    }
    
    /**
     * Constructs a PdfName.
     * @param bytes the byte representation of the name
     */
    public PdfName(byte bytes[]) {
        super(PdfObject.NAME, bytes);
    }
    // methods
    
    /**
     * Compares this object with the specified object for order.  Returns a
     * negative integer, zero, or a positive integer as this object is less
     * than, equal to, or greater than the specified object.<p>
     * @param object the Object to be compared.
     * @return a negative integer, zero, or a positive integer as this object
     * 		is less than, equal to, or greater than the specified object.
     * @throws ClassCastException if the specified object's type prevents it
     *         from being compared to this Object.
     */
    public int compareTo(Object object) {
        PdfName name = (PdfName) object;
        
        byte myBytes[] = bytes;
        byte objBytes[] = name.bytes;
        int len = Math.min(myBytes.length, objBytes.length);
        for(int i=0; i<len; i++) {
            if(myBytes[i] > objBytes[i])
                return 1;
            
            if(myBytes[i] < objBytes[i])
                return -1;
        }
        if (myBytes.length < objBytes.length)
            return -1;
        if (myBytes.length > objBytes.length)
            return 1;
        return 0;
    }
    
    /**
     * Indicates whether some other object is "equal to" this one.
     *
     * @param   obj   the reference object with which to compare.
     * @return  <code>true</code> if this object is the same as the obj
     *          argument; <code>false</code> otherwise.
     */
    public boolean equals(Object obj) {
        if (this == obj)
            return true;
        if (obj instanceof PdfName)
            return compareTo(obj) == 0;
        return false;
    }
    
    /**
     * Returns a hash code value for the object. This method is
     * supported for the benefit of hashtables such as those provided by
     * <code>java.util.Hashtable</code>.
     *
     * @return  a hash code value for this object.
     */
    public int hashCode() {
        int h = hash;
        if (h == 0) {
            int ptr = 0;
            int len = bytes.length;
            
            for (int i = 0; i < len; i++)
                h = 31*h + (bytes[ptr++] & 0xff);
            hash = h;
        }
        return h;
    }
    
    /** Decodes an escaped name in the form "/AB#20CD" into "AB CD".
     * @param name the name to decode
     * @return the decoded name
     */
    public static String decodeName(String name) {
        StringBuffer buf = new StringBuffer();
        try {
            int len = name.length();
            for (int k = 1; k < len; ++k) {
                char c = name.charAt(k);
                if (c == '#') {
                    c = (char)((PRTokeniser.getHex(name.charAt(k + 1)) << 4) + PRTokeniser.getHex(name.charAt(k + 2)));
                    k += 2;
                }
                buf.append(c);
            }
        }
        catch (IndexOutOfBoundsException e) {
            // empty on purpose
        }
        return buf.toString();
    }
}