package com.wutka.dtd;import java.io.*;import java.net.*;/** Represents an Entity defined in a DTD * * @author Mark Wutka * @version $Revision: 1.18 $ $Date: 2002/07/31 00:19:10 $ by $Author: wutka $ */public class DTDEntity implements DTDOutput{    public String name;    public boolean isParsed;    public String value;    public DTDExternalID externalID;    public String ndata;    public Object defaultLocation;    public DTDEntity()    {    }    public DTDEntity(String aName)    {        name = aName;    }    public DTDEntity(String aName, Object aDefaultLocation)    {        name = aName;        defaultLocation = aDefaultLocation;    }/** Writes out an entity declaration for this entity */    public void write(PrintWriter out)        throws IOException    {        out.print("<!ENTITY ");        if (isParsed)        {            out.print(" % ");        }        out.print(name);        if (value != null)        {            char quoteChar = '"';            if (value.indexOf(quoteChar) >= 0) quoteChar='\'';            out.print(quoteChar);            out.print(value);            out.print(quoteChar);        }        else        {            externalID.write(out);            if (ndata != null)            {                out.print(" NDATA ");                out.print(ndata);            }        }        out.println(">");    }    public String getExternalId()    {        return(externalID.system);    }    public Reader getReader()        throws IOException    {        // MAW Ver 1.19 - Added check for externalID == null        if (externalID == null)        {            return null;        }        Reader rd = getReader(externalID.system);        return rd;    }    public Reader getReader(String entityName)    {        try        {            if (defaultLocation != null)            {                if (defaultLocation instanceof File)                {                    File loc = (File) defaultLocation;                    BufferedReader in = new BufferedReader(                        new FileReader(new File(loc, entityName)));                    return in;                }                else if (defaultLocation instanceof URL)                {                    // MAW Version 1.17                    // Changed to construct new URL based on default                    // location plus the entity name just like is done                    // with the File-based name. This allows parsing of                    // a URL-based DTD file that references other files either                    // relatively or absolutely.                    URL url = new URL((URL) defaultLocation, entityName);                    BufferedReader in = new BufferedReader(                        new InputStreamReader(url.openStream()));                    return in;                }            }            BufferedReader in = new BufferedReader(                new FileReader(entityName));            return in;        }        catch (Exception ignore)        {        }        try        {            URL url = new URL(entityName);            InputStream inStream = url.openStream();            BufferedReader in = new BufferedReader(                new InputStreamReader(inStream));            return in;        }        catch (Exception ignore)        {        }        return null;    }    public boolean equals(Object ob)    {        if (ob == this) return true;        if (!(ob instanceof DTDEntity)) return false;        DTDEntity other = (DTDEntity) ob;        if (name == null)        {            if (other.name != null) return false;        }        else        {            if (!name.equals(other.name)) return false;        }        if (isParsed != other.isParsed) return false;        if (value == null)        {            if (other.value != null) return false;        }        else        {            if (!value.equals(other.value)) return false;        }        if (externalID == null)        {            if (other.externalID != null) return false;        }        else        {            if (!externalID.equals(other.externalID)) return false;        }        if (ndata == null)        {            if (other.ndata != null) return false;        }        else        {            if (!ndata.equals(other.ndata)) return false;        }        return true;    }/** Sets the name of this entity */    public void setName(String aName)    {        name = aName;    }/** Returns the name of this entity */    public String getName()    {        return name;    }/** Sets the isParsed flag */    public void setIsParsed(boolean flag)    {        isParsed = flag;    }/** Returns the isParsed flag */    public boolean isParsed()    {        return isParsed;    }/** Sets the entity value */    public void setValue(String aValue)    {        value = aValue;    }/** Returns the entity value */    public String getValue()    {        return value;    }/** Sets the external ID for the entity */    public void setExternalID(DTDExternalID anExternalID)    {        externalID = anExternalID;    }/** Returns the external ID for the entity */    public DTDExternalID getExternalID()    {        return externalID;    }/** Sets the entity ndata */    public void setNdata(String anNdata)    {        ndata = anNdata;    }/** Returns the entity ndata */    public String getNdata()    {        return ndata;    }}