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The Apache PDFBox library is an open source Java tool for working with PDF documents.
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache 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.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.pdfbox.cos;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Calendar;
import java.util.Collection;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.apache.pdfbox.io.IOUtils;
import org.apache.pdfbox.pdmodel.common.COSObjectable;
import org.apache.pdfbox.util.DateConverter;
/**
* This class represents a dictionary where name/value pairs reside.
*
* @author Ben Litchfield
*
*/
public class COSDictionary extends COSBase implements COSUpdateInfo
{
private static final String PATH_SEPARATOR = "/";
private boolean needToBeUpdated;
/**
* The name-value pairs of this dictionary. The pairs are kept in the order they were added to the dictionary.
*/
protected Map items = new LinkedHashMap();
/**
* Constructor.
*/
public COSDictionary()
{
// default constructor
}
/**
* Copy Constructor. This will make a shallow copy of this dictionary.
*
* @param dict The dictionary to copy.
*/
public COSDictionary(COSDictionary dict)
{
items.putAll(dict.items);
}
/**
* @see java.util.Map#containsValue(java.lang.Object)
*
* @param value The value to find in the map.
*
* @return true if the map contains this value.
*/
public boolean containsValue(Object value)
{
boolean contains = items.containsValue(value);
if (!contains && value instanceof COSObject)
{
contains = items.containsValue(((COSObject) value).getObject());
}
return contains;
}
/**
* Search in the map for the value that matches the parameter and return the first key that maps to that value.
*
* @param value The value to search for in the map.
* @return The key for the value in the map or null if it does not exist.
*/
public COSName getKeyForValue(Object value)
{
for (Map.Entry entry : items.entrySet())
{
Object nextValue = entry.getValue();
if (nextValue.equals(value)
|| (nextValue instanceof COSObject && ((COSObject) nextValue).getObject()
.equals(value)))
{
return entry.getKey();
}
}
return null;
}
/**
* This will return the number of elements in this dictionary.
*
* @return The number of elements in the dictionary.
*/
public int size()
{
return items.size();
}
/**
* This will clear all items in the map.
*/
public void clear()
{
items.clear();
}
/**
* This will get an object from this dictionary. If the object is a reference then it will dereference it and get it
* from the document. If the object is COSNull then null will be returned.
*
* @param key The key to the object that we are getting.
*
* @return The object that matches the key.
*/
public COSBase getDictionaryObject(String key)
{
return getDictionaryObject(COSName.getPDFName(key));
}
/**
* This is a special case of getDictionaryObject that takes multiple keys, it will handle the situation where
* multiple keys could get the same value, ie if either CS or ColorSpace is used to get the colorspace. This will
* get an object from this dictionary. If the object is a reference then it will dereference it and get it from the
* document. If the object is COSNull then null will be returned.
*
* @param firstKey The first key to try.
* @param secondKey The second key to try.
*
* @return The object that matches the key.
*/
public COSBase getDictionaryObject(COSName firstKey, COSName secondKey)
{
COSBase retval = getDictionaryObject(firstKey);
if (retval == null && secondKey != null)
{
retval = getDictionaryObject(secondKey);
}
return retval;
}
/**
* This is a special case of getDictionaryObject that takes multiple keys, it will handle the situation where
* multiple keys could get the same value, ie if either CS or ColorSpace is used to get the colorspace. This will
* get an object from this dictionary. If the object is a reference then it will dereference it and get it from the
* document. If the object is COSNull then null will be returned.
*
* @param keyList The list of keys to find a value.
*
* @return The object that matches the key.
*/
public COSBase getDictionaryObject(String[] keyList)
{
COSBase retval = null;
for (int i = 0; i < keyList.length && retval == null; i++)
{
retval = getDictionaryObject(COSName.getPDFName(keyList[i]));
}
return retval;
}
/**
* This will get an object from this dictionary. If the object is a reference then it will dereference it and get it
* from the document. If the object is COSNull then null will be returned.
*
* @param key The key to the object that we are getting.
*
* @return The object that matches the key.
*/
public COSBase getDictionaryObject(COSName key)
{
COSBase retval = items.get(key);
if (retval instanceof COSObject)
{
retval = ((COSObject) retval).getObject();
}
if (retval instanceof COSNull)
{
retval = null;
}
return retval;
}
/**
* This will set an item in the dictionary. If value is null then the result will be the same as removeItem( key ).
*
* @param key The key to the dictionary object.
* @param value The value to the dictionary object.
*/
public void setItem(COSName key, COSBase value)
{
if (value == null)
{
removeItem(key);
}
else
{
items.put(key, value);
}
}
/**
* This will set an item in the dictionary. If value is null then the result will be the same as removeItem( key ).
*
* @param key The key to the dictionary object.
* @param value The value to the dictionary object.
*/
public void setItem(COSName key, COSObjectable value)
{
COSBase base = null;
if (value != null)
{
base = value.getCOSObject();
}
setItem(key, base);
}
/**
* This will set an item in the dictionary. If value is null then the result will be the same as removeItem( key ).
*
* @param key The key to the dictionary object.
* @param value The value to the dictionary object.
*/
public void setItem(String key, COSObjectable value)
{
setItem(COSName.getPDFName(key), value);
}
/**
* This will set an item in the dictionary.
*
* @param key The key to the dictionary object.
* @param value The value to the dictionary object.
*/
public void setBoolean(String key, boolean value)
{
setItem(COSName.getPDFName(key), COSBoolean.getBoolean(value));
}
/**
* This will set an item in the dictionary.
*
* @param key The key to the dictionary object.
* @param value The value to the dictionary object.
*/
public void setBoolean(COSName key, boolean value)
{
setItem(key, COSBoolean.getBoolean(value));
}
/**
* This will set an item in the dictionary. If value is null then the result will be the same as removeItem( key ).
*
* @param key The key to the dictionary object.
* @param value The value to the dictionary object.
*/
public void setItem(String key, COSBase value)
{
setItem(COSName.getPDFName(key), value);
}
/**
* This is a convenience method that will convert the value to a COSName object. If it is null then the object will
* be removed.
*
* @param key The key to the object,
* @param value The string value for the name.
*/
public void setName(String key, String value)
{
setName(COSName.getPDFName(key), value);
}
/**
* This is a convenience method that will convert the value to a COSName object. If it is null then the object will
* be removed.
*
* @param key The key to the object,
* @param value The string value for the name.
*/
public void setName(COSName key, String value)
{
COSName name = null;
if (value != null)
{
name = COSName.getPDFName(value);
}
setItem(key, name);
}
/**
* Set the value of a date entry in the dictionary.
*
* @param key The key to the date value.
* @param date The date value.
*/
public void setDate(String key, Calendar date)
{
setDate(COSName.getPDFName(key), date);
}
/**
* Set the date object.
*
* @param key The key to the date.
* @param date The date to set.
*/
public void setDate(COSName key, Calendar date)
{
setString(key, DateConverter.toString(date));
}
/**
* Set the value of a date entry in the dictionary.
*
* @param embedded The embedded dictionary.
* @param key The key to the date value.
* @param date The date value.
*/
public void setEmbeddedDate(String embedded, String key, Calendar date)
{
setEmbeddedDate(embedded, COSName.getPDFName(key), date);
}
/**
* Set the date object.
*
* @param embedded The embedded dictionary.
* @param key The key to the date.
* @param date The date to set.
*/
public void setEmbeddedDate(String embedded, COSName key, Calendar date)
{
COSDictionary dic = (COSDictionary) getDictionaryObject(embedded);
if (dic == null && date != null)
{
dic = new COSDictionary();
setItem(embedded, dic);
}
if (dic != null)
{
dic.setDate(key, date);
}
}
/**
* This is a convenience method that will convert the value to a COSString object. If it is null then the object
* will be removed.
*
* @param key The key to the object,
* @param value The string value for the name.
*/
public void setString(String key, String value)
{
setString(COSName.getPDFName(key), value);
}
/**
* This is a convenience method that will convert the value to a COSString object. If it is null then the object
* will be removed.
*
* @param key The key to the object,
* @param value The string value for the name.
*/
public void setString(COSName key, String value)
{
COSString name = null;
if (value != null)
{
name = new COSString(value);
}
setItem(key, name);
}
/**
* This is a convenience method that will convert the value to a COSString object. If it is null then the object
* will be removed.
*
* @param embedded The embedded dictionary to set the item in.
* @param key The key to the object,
* @param value The string value for the name.
*/
public void setEmbeddedString(String embedded, String key, String value)
{
setEmbeddedString(embedded, COSName.getPDFName(key), value);
}
/**
* This is a convenience method that will convert the value to a COSString object. If it is null then the object
* will be removed.
*
* @param embedded The embedded dictionary to set the item in.
* @param key The key to the object,
* @param value The string value for the name.
*/
public void setEmbeddedString(String embedded, COSName key, String value)
{
COSDictionary dic = (COSDictionary) getDictionaryObject(embedded);
if (dic == null && value != null)
{
dic = new COSDictionary();
setItem(embedded, dic);
}
if (dic != null)
{
dic.setString(key, value);
}
}
/**
* This is a convenience method that will convert the value to a COSInteger object.
*
* @param key The key to the object,
* @param value The int value for the name.
*/
public void setInt(String key, int value)
{
setInt(COSName.getPDFName(key), value);
}
/**
* This is a convenience method that will convert the value to a COSInteger object.
*
* @param key The key to the object,
* @param value The int value for the name.
*/
public void setInt(COSName key, int value)
{
setItem(key, COSInteger.get(value));
}
/**
* This is a convenience method that will convert the value to a COSInteger object.
*
* @param key The key to the object,
* @param value The int value for the name.
*/
public void setLong(String key, long value)
{
setLong(COSName.getPDFName(key), value);
}
/**
* This is a convenience method that will convert the value to a COSInteger object.
*
* @param key The key to the object,
* @param value The int value for the name.
*/
public void setLong(COSName key, long value)
{
COSInteger intVal = COSInteger.get(value);
setItem(key, intVal);
}
/**
* This is a convenience method that will convert the value to a COSInteger object.
*
* @param embeddedDictionary The embedded dictionary.
* @param key The key to the object,
* @param value The int value for the name.
*/
public void setEmbeddedInt(String embeddedDictionary, String key, int value)
{
setEmbeddedInt(embeddedDictionary, COSName.getPDFName(key), value);
}
/**
* This is a convenience method that will convert the value to a COSInteger object.
*
* @param embeddedDictionary The embedded dictionary.
* @param key The key to the object,
* @param value The int value for the name.
*/
public void setEmbeddedInt(String embeddedDictionary, COSName key, int value)
{
COSDictionary embedded = (COSDictionary) getDictionaryObject(embeddedDictionary);
if (embedded == null)
{
embedded = new COSDictionary();
setItem(embeddedDictionary, embedded);
}
embedded.setInt(key, value);
}
/**
* This is a convenience method that will convert the value to a COSFloat object.
*
* @param key The key to the object,
* @param value The int value for the name.
*/
public void setFloat(String key, float value)
{
setFloat(COSName.getPDFName(key), value);
}
/**
* This is a convenience method that will convert the value to a COSFloat object.
*
* @param key The key to the object,
* @param value The int value for the name.
*/
public void setFloat(COSName key, float value)
{
COSFloat fltVal = new COSFloat(value);
setItem(key, fltVal);
}
/**
* Sets the given boolean value at bitPos in the flags.
*
* @param field The COSName of the field to set the value into.
* @param bitFlag the bit position to set the value in.
* @param value the value the bit position should have.
*/
public void setFlag(COSName field, int bitFlag, boolean value)
{
int currentFlags = getInt(field, 0);
if (value)
{
currentFlags = currentFlags | bitFlag;
}
else
{
currentFlags &= ~bitFlag;
}
setInt(field, currentFlags);
}
/**
* This is a convenience method that will get the dictionary object that is expected to be a name. Null is returned
* if the entry does not exist in the dictionary.
*
* @param key The key to the item in the dictionary.
* @return The COS name.
*/
public COSName getCOSName(COSName key)
{
COSBase name = getDictionaryObject(key);
if (name instanceof COSName)
{
return (COSName) name;
}
return null;
}
/**
* This is a convenience method that will get the dictionary object that is expected to be a name. Default is
* returned if the entry does not exist in the dictionary.
*
* @param key The key to the item in the dictionary.
* @param defaultValue The value to return if the dictionary item is null.
* @return The COS name.
*/
public COSName getCOSName(COSName key, COSName defaultValue)
{
COSBase name = getDictionaryObject(key);
if (name instanceof COSName)
{
return (COSName) name;
}
return defaultValue;
}
/**
* This is a convenience method that will get the dictionary object that is expected to be a name and convert it to
* a string. Null is returned if the entry does not exist in the dictionary.
*
* @param key The key to the item in the dictionary.
* @return The name converted to a string.
*/
public String getNameAsString(String key)
{
return getNameAsString(COSName.getPDFName(key));
}
/**
* This is a convenience method that will get the dictionary object that is expected to be a name and convert it to
* a string. Null is returned if the entry does not exist in the dictionary.
*
* @param key The key to the item in the dictionary.
* @return The name converted to a string.
*/
public String getNameAsString(COSName key)
{
String retval = null;
COSBase name = getDictionaryObject(key);
if (name instanceof COSName)
{
retval = ((COSName) name).getName();
}
else if (name instanceof COSString)
{
retval = ((COSString) name).getString();
}
return retval;
}
/**
* This is a convenience method that will get the dictionary object that is expected to be a name and convert it to
* a string.
*
* @param key The key to the item in the dictionary.
* @param defaultValue The value to return if the dictionary item is null.
* @return The name converted to a string.
*/
public String getNameAsString(String key, String defaultValue)
{
return getNameAsString(COSName.getPDFName(key), defaultValue);
}
/**
* This is a convenience method that will get the dictionary object that is expected to be a name and convert it to
* a string.
*
* @param key The key to the item in the dictionary.
* @param defaultValue The value to return if the dictionary item is null.
* @return The name converted to a string.
*/
public String getNameAsString(COSName key, String defaultValue)
{
String retval = getNameAsString(key);
if (retval == null)
{
retval = defaultValue;
}
return retval;
}
/**
* This is a convenience method that will get the dictionary object that is expected to be a
* string. Null is returned if the entry does not exist in the dictionary.
*
* @param key The key to the item in the dictionary.
* @return The name converted to a string.
*/
public String getString(String key)
{
return getString(COSName.getPDFName(key));
}
/**
* This is a convenience method that will get the dictionary object that is expected to be a
* string. Null is returned if the entry does not exist in the dictionary.
*
* @param key The key to the item in the dictionary.
* @return The name converted to a string.
*/
public String getString(COSName key)
{
String retval = null;
COSBase value = getDictionaryObject(key);
if (value instanceof COSString)
{
retval = ((COSString) value).getString();
}
return retval;
}
/**
* This is a convenience method that will get the dictionary object that is expected to be a
* string.
*
* @param key The key to the item in the dictionary.
* @param defaultValue The default value to return.
* @return The name converted to a string.
*/
public String getString(String key, String defaultValue)
{
return getString(COSName.getPDFName(key), defaultValue);
}
/**
* This is a convenience method that will get the dictionary object that is expected to be a
* string.
*
* @param key The key to the item in the dictionary.
* @param defaultValue The default value to return.
* @return The name converted to a string.
*/
public String getString(COSName key, String defaultValue)
{
String retval = getString(key);
if (retval == null)
{
retval = defaultValue;
}
return retval;
}
/**
* This is a convenience method that will get the dictionary object that is expected to be a name and convert it to
* a string. Null is returned if the entry does not exist in the dictionary.
*
* @param embedded The embedded dictionary.
* @param key The key to the item in the dictionary.
* @return The name converted to a string.
*/
public String getEmbeddedString(String embedded, String key)
{
return getEmbeddedString(embedded, COSName.getPDFName(key), null);
}
/**
* This is a convenience method that will get the dictionary object that is expected to be a name and convert it to
* a string. Null is returned if the entry does not exist in the dictionary.
*
* @param embedded The embedded dictionary.
* @param key The key to the item in the dictionary.
* @return The name converted to a string.
*/
public String getEmbeddedString(String embedded, COSName key)
{
return getEmbeddedString(embedded, key, null);
}
/**
* This is a convenience method that will get the dictionary object that is expected to be a name and convert it to
* a string.
*
* @param embedded The embedded dictionary.
* @param key The key to the item in the dictionary.
* @param defaultValue The default value to return.
* @return The name converted to a string.
*/
public String getEmbeddedString(String embedded, String key, String defaultValue)
{
return getEmbeddedString(embedded, COSName.getPDFName(key), defaultValue);
}
/**
* This is a convenience method that will get the dictionary object that is expected to be a name and convert it to
* a string.
*
* @param embedded The embedded dictionary.
* @param key The key to the item in the dictionary.
* @param defaultValue The default value to return.
* @return The name converted to a string.
*/
public String getEmbeddedString(String embedded, COSName key, String defaultValue)
{
String retval = defaultValue;
COSBase base = getDictionaryObject(embedded);
if (base instanceof COSDictionary)
{
retval = ((COSDictionary) base).getString(key, defaultValue);
}
return retval;
}
/**
* This is a convenience method that will get the dictionary object that is expected to be a name and convert it to
* a string. Null is returned if the entry does not exist in the dictionary or if the date was invalid.
*
* @param key The key to the item in the dictionary.
* @return The name converted to a date.
*/
public Calendar getDate(String key)
{
return getDate(COSName.getPDFName(key));
}
/**
* This is a convenience method that will get the dictionary object that is expected to be a name and convert it to
* a string. Null is returned if the entry does not exist in the dictionary or if the date was invalid.
*
* @param key The key to the item in the dictionary.
* @return The name converted to a date.
*/
public Calendar getDate(COSName key)
{
COSBase base = getDictionaryObject(key);
if (base instanceof COSString)
{
return DateConverter.toCalendar((COSString) base);
}
return null;
}
/**
* This is a convenience method that will get the dictionary object that is expected to be a date.
*
* @param key The key to the item in the dictionary.
* @param defaultValue The default value to return if the entry does not exist in the dictionary or if the date was invalid.
* @return The name converted to a date.
*/
public Calendar getDate(String key, Calendar defaultValue)
{
return getDate(COSName.getPDFName(key), defaultValue);
}
/**
* This is a convenience method that will get the dictionary object that is expected to be a date.
*
* @param key The key to the item in the dictionary.
* @param defaultValue The default value to return if the entry does not exist in the dictionary or if the date was invalid.
* @return The name converted to a date.
*/
public Calendar getDate(COSName key, Calendar defaultValue)
{
Calendar retval = getDate(key);
if (retval == null)
{
retval = defaultValue;
}
return retval;
}
/**
* This is a convenience method that will get the dictionary object that is expected to be a name and convert it to
* a string. Null is returned if the entry does not exist in the dictionary.
*
* @param embedded The embedded dictionary to get.
* @param key The key to the item in the dictionary.
* @return The name converted to a string.
* @throws IOException If there is an error converting to a date.
*/
public Calendar getEmbeddedDate(String embedded, String key) throws IOException
{
return getEmbeddedDate(embedded, COSName.getPDFName(key), null);
}
/**
* This is a convenience method that will get the dictionary object that is expected to be a name and convert it to
* a string. Null is returned if the entry does not exist in the dictionary.
*
* @param embedded The embedded dictionary to get.
* @param key The key to the item in the dictionary.
* @return The name converted to a string.
*
* @throws IOException If there is an error converting to a date.
*/
public Calendar getEmbeddedDate(String embedded, COSName key) throws IOException
{
return getEmbeddedDate(embedded, key, null);
}
/**
* This is a convenience method that will get the dictionary object that is expected to be a date.
*
* @param embedded The embedded dictionary to get.
* @param key The key to the item in the dictionary.
* @param defaultValue The default value to return if the entry does not exist in the dictionary or if the date was invalid.
* @return The name converted to a string.
* @throws IOException If there is an error converting to a date.
*/
public Calendar getEmbeddedDate(String embedded, String key, Calendar defaultValue)
throws IOException
{
return getEmbeddedDate(embedded, COSName.getPDFName(key), defaultValue);
}
/**
* This is a convenience method that will get the dictionary object that is expected to be a date.
*
* @param embedded The embedded dictionary to get.
* @param key The key to the item in the dictionary.
* @param defaultValue The default value to return if the entry does not exist in the dictionary or if the date was invalid.
* @return The name converted to a string.
* @throws IOException If there is an error converting to a date.
*/
public Calendar getEmbeddedDate(String embedded, COSName key, Calendar defaultValue)
throws IOException
{
Calendar retval = defaultValue;
COSDictionary eDic = (COSDictionary) getDictionaryObject(embedded);
if (eDic != null)
{
retval = eDic.getDate(key, defaultValue);
}
return retval;
}
/**
* This is a convenience method that will get the dictionary object that is expected to be a cos boolean and convert
* it to a primitive boolean.
*
* @param key The key to the item in the dictionary.
* @param defaultValue The value returned if the entry is null.
*
* @return The value converted to a boolean.
*/
public boolean getBoolean(String key, boolean defaultValue)
{
return getBoolean(COSName.getPDFName(key), defaultValue);
}
/**
* This is a convenience method that will get the dictionary object that is expected to be a COSBoolean and convert
* it to a primitive boolean.
*
* @param key The key to the item in the dictionary.
* @param defaultValue The value returned if the entry is null.
*
* @return The entry converted to a boolean.
*/
public boolean getBoolean(COSName key, boolean defaultValue)
{
return getBoolean(key, null, defaultValue);
}
/**
* This is a convenience method that will get the dictionary object that is expected to be a COSBoolean and convert
* it to a primitive boolean.
*
* @param firstKey The first key to the item in the dictionary.
* @param secondKey The second key to the item in the dictionary.
* @param defaultValue The value returned if the entry is null.
*
* @return The entry converted to a boolean.
*/
public boolean getBoolean(COSName firstKey, COSName secondKey, boolean defaultValue)
{
boolean retval = defaultValue;
COSBase bool = getDictionaryObject(firstKey, secondKey);
if (bool instanceof COSBoolean)
{
retval = ((COSBoolean) bool).getValue();
}
return retval;
}
/**
* Get an integer from an embedded dictionary. Useful for 1-1 mappings. default:-1
*
* @param embeddedDictionary The name of the embedded dictionary.
* @param key The key in the embedded dictionary.
*
* @return The value of the embedded integer.
*/
public int getEmbeddedInt(String embeddedDictionary, String key)
{
return getEmbeddedInt(embeddedDictionary, COSName.getPDFName(key));
}
/**
* Get an integer from an embedded dictionary. Useful for 1-1 mappings. default:-1
*
* @param embeddedDictionary The name of the embedded dictionary.
* @param key The key in the embedded dictionary.
*
* @return The value of the embedded integer.
*/
public int getEmbeddedInt(String embeddedDictionary, COSName key)
{
return getEmbeddedInt(embeddedDictionary, key, -1);
}
/**
* Get an integer from an embedded dictionary. Useful for 1-1 mappings.
*
* @param embeddedDictionary The name of the embedded dictionary.
* @param key The key in the embedded dictionary.
* @param defaultValue The value if there is no embedded dictionary or it does not contain the key.
*
* @return The value of the embedded integer.
*/
public int getEmbeddedInt(String embeddedDictionary, String key, int defaultValue)
{
return getEmbeddedInt(embeddedDictionary, COSName.getPDFName(key), defaultValue);
}
/**
* Get an integer from an embedded dictionary. Useful for 1-1 mappings.
*
* @param embeddedDictionary The name of the embedded dictionary.
* @param key The key in the embedded dictionary.
* @param defaultValue The value if there is no embedded dictionary or it does not contain the key.
*
* @return The value of the embedded integer.
*/
public int getEmbeddedInt(String embeddedDictionary, COSName key, int defaultValue)
{
int retval = defaultValue;
COSDictionary embedded = (COSDictionary) getDictionaryObject(embeddedDictionary);
if (embedded != null)
{
retval = embedded.getInt(key, defaultValue);
}
return retval;
}
/**
* This is a convenience method that will get the dictionary object that is expected to be an int. -1 is returned if
* there is no value.
*
* @param key The key to the item in the dictionary.
* @return The integer value.
*/
public int getInt(String key)
{
return getInt(COSName.getPDFName(key), -1);
}
/**
* This is a convenience method that will get the dictionary object that is expected to be an int. -1 is returned if
* there is no value.
*
* @param key The key to the item in the dictionary.
* @return The integer value..
*/
public int getInt(COSName key)
{
return getInt(key, -1);
}
/**
* This is a convenience method that will get the dictionary object that is expected to be an integer. If the
* dictionary value is null then the default value will be returned.
*
* @param keyList The key to the item in the dictionary.
* @param defaultValue The value to return if the dictionary item is null.
* @return The integer value.
*/
public int getInt(String[] keyList, int defaultValue)
{
int retval = defaultValue;
COSBase obj = getDictionaryObject(keyList);
if (obj instanceof COSNumber)
{
retval = ((COSNumber) obj).intValue();
}
return retval;
}
/**
* This is a convenience method that will get the dictionary object that is expected to be an integer. If the
* dictionary value is null then the default value will be returned.
*
* @param key The key to the item in the dictionary.
* @param defaultValue The value to return if the dictionary item is null.
* @return The integer value.
*/
public int getInt(String key, int defaultValue)
{
return getInt(COSName.getPDFName(key), defaultValue);
}
/**
* This is a convenience method that will get the dictionary object that is expected to be an integer. If the
* dictionary value is null then the default value will be returned.
*
* @param key The key to the item in the dictionary.
* @param defaultValue The value to return if the dictionary item is null.
* @return The integer value.
*/
public int getInt(COSName key, int defaultValue)
{
return getInt(key, null, defaultValue);
}
/**
* This is a convenience method that will get the dictionary object that is expected to be an integer. If the
* dictionary value is null then the default value -1 will be returned.
*
* @param firstKey The first key to the item in the dictionary.
* @param secondKey The second key to the item in the dictionary.
* @return The integer value.
*/
public int getInt(COSName firstKey, COSName secondKey)
{
return getInt(firstKey, secondKey, -1);
}
/**
* This is a convenience method that will get the dictionary object that is expected to be an integer. If the
* dictionary value is null then the default value will be returned.
*
* @param firstKey The first key to the item in the dictionary.
* @param secondKey The second key to the item in the dictionary.
* @param defaultValue The value to return if the dictionary item is null.
* @return The integer value.
*/
public int getInt(COSName firstKey, COSName secondKey, int defaultValue)
{
int retval = defaultValue;
COSBase obj = getDictionaryObject(firstKey, secondKey);
if (obj instanceof COSNumber)
{
retval = ((COSNumber) obj).intValue();
}
return retval;
}
/**
* This is a convenience method that will get the dictionary object that is expected to be an long. -1 is returned
* if there is no value.
*
* @param key The key to the item in the dictionary.
*
* @return The long value.
*/
public long getLong(String key)
{
return getLong(COSName.getPDFName(key), -1L);
}
/**
* This is a convenience method that will get the dictionary object that is expected to be an long. -1 is returned
* if there is no value.
*
* @param key The key to the item in the dictionary.
* @return The long value.
*/
public long getLong(COSName key)
{
return getLong(key, -1L);
}
/**
* This is a convenience method that will get the dictionary object that is expected to be an long. If the
* dictionary value is null then the default value will be returned.
*
* @param keyList The key to the item in the dictionary.
* @param defaultValue The value to return if the dictionary item is null.
* @return The long value.
*/
public long getLong(String[] keyList, long defaultValue)
{
long retval = defaultValue;
COSBase obj = getDictionaryObject(keyList);
if (obj instanceof COSNumber)
{
retval = ((COSNumber) obj).longValue();
}
return retval;
}
/**
* This is a convenience method that will get the dictionary object that is expected to be an integer. If the
* dictionary value is null then the default value will be returned.
*
* @param key The key to the item in the dictionary.
* @param defaultValue The value to return if the dictionary item is null.
* @return The integer value.
*/
public long getLong(String key, long defaultValue)
{
return getLong(COSName.getPDFName(key), defaultValue);
}
/**
* This is a convenience method that will get the dictionary object that is expected to be an integer. If the
* dictionary value is null then the default value will be returned.
*
* @param key The key to the item in the dictionary.
* @param defaultValue The value to return if the dictionary item is null.
* @return The integer value.
*/
public long getLong(COSName key, long defaultValue)
{
long retval = defaultValue;
COSBase obj = getDictionaryObject(key);
if (obj instanceof COSNumber)
{
retval = ((COSNumber) obj).longValue();
}
return retval;
}
/**
* This is a convenience method that will get the dictionary object that is expected to be an float. -1 is returned
* if there is no value.
*
* @param key The key to the item in the dictionary.
* @return The float value.
*/
public float getFloat(String key)
{
return getFloat(COSName.getPDFName(key), -1);
}
/**
* This is a convenience method that will get the dictionary object that is expected to be an float. -1 is returned
* if there is no value.
*
* @param key The key to the item in the dictionary.
* @return The float value.
*/
public float getFloat(COSName key)
{
return getFloat(key, -1);
}
/**
* This is a convenience method that will get the dictionary object that is expected to be a float. If the
* dictionary value is null then the default value will be returned.
*
* @param key The key to the item in the dictionary.
* @param defaultValue The value to return if the dictionary item is null.
* @return The float value.
*/
public float getFloat(String key, float defaultValue)
{
return getFloat(COSName.getPDFName(key), defaultValue);
}
/**
* This is a convenience method that will get the dictionary object that is expected to be an float. If the
* dictionary value is null then the default value will be returned.
*
* @param key The key to the item in the dictionary.
* @param defaultValue The value to return if the dictionary item is null.
* @return The float value.
*/
public float getFloat(COSName key, float defaultValue)
{
float retval = defaultValue;
COSBase obj = getDictionaryObject(key);
if (obj instanceof COSNumber)
{
retval = ((COSNumber) obj).floatValue();
}
return retval;
}
/**
* Gets the boolean value from the flags at the given bit position.
*
* @param field The COSName of the field to get the flag from.
* @param bitFlag the bitPosition to get the value from.
*
* @return true if the number at bitPos is '1'
*/
public boolean getFlag(COSName field, int bitFlag)
{
int ff = getInt(field, 0);
return (ff & bitFlag) == bitFlag;
}
/**
* This will remove an item for the dictionary. This will do nothing of the object does not exist.
*
* @param key The key to the item to remove from the dictionary.
*/
public void removeItem(COSName key)
{
items.remove(key);
}
/**
* This will do a lookup into the dictionary.
*
* @param key The key to the object.
*
* @return The item that matches the key.
*/
public COSBase getItem(COSName key)
{
return items.get(key);
}
/**
* This will do a lookup into the dictionary.
*
* @param key The key to the object.
*
* @return The item that matches the key.
*/
public COSBase getItem(String key)
{
return getItem(COSName.getPDFName(key));
}
/**
* This is a special case of getItem that takes multiple keys, it will handle the situation
* where multiple keys could get the same value, ie if either CS or ColorSpace is used to get
* the colorspace. This will get an object from this dictionary.
*
* @param firstKey The first key to try.
* @param secondKey The second key to try.
*
* @return The object that matches the key.
*/
public COSBase getItem(COSName firstKey, COSName secondKey)
{
COSBase retval = getItem(firstKey);
if (retval == null && secondKey != null)
{
retval = getItem(secondKey);
}
return retval;
}
/**
* Returns the names of the entries in this dictionary. The returned set is in the order the entries were added to
* the dictionary.
*
* @since Apache PDFBox 1.1.0
* @return names of the entries in this dictionary
*/
public Set keySet()
{
return items.keySet();
}
/**
* Returns the name-value entries in this dictionary. The returned set is in the order the entries were added to the
* dictionary.
*
* @since Apache PDFBox 1.1.0
* @return name-value entries in this dictionary
*/
public Set> entrySet()
{
return items.entrySet();
}
/**
* This will get all of the values for the dictionary.
*
* @return All the values for the dictionary.
*/
public Collection getValues()
{
return items.values();
}
/**
* visitor pattern double dispatch method.
*
* @param visitor The object to notify when visiting this object.
* @return The object that the visitor returns.
*
* @throws IOException If there is an error visiting this object.
*/
@Override
public Object accept(ICOSVisitor visitor) throws IOException
{
return visitor.visitFromDictionary(this);
}
@Override
public boolean isNeedToBeUpdated()
{
return needToBeUpdated;
}
@Override
public void setNeedToBeUpdated(boolean flag)
{
needToBeUpdated = flag;
}
/**
* This will add all of the dictionaries keys/values to this dictionary.
* Only called when adding keys to a trailer that already exists.
*
* @param dic The dictionaries to get the keys from.
*/
public void addAll(COSDictionary dic)
{
for (Map.Entry entry : dic.entrySet())
{
/*
* If we're at a second trailer, we have a linearized pdf file, meaning that the first Size entry represents
* all of the objects so we don't need to grab the second.
*/
if (!entry.getKey().getName().equals("Size")
|| !items.containsKey(COSName.getPDFName("Size")))
{
setItem(entry.getKey(), entry.getValue());
}
}
}
/**
* @see java.util.Map#containsKey(Object)
*
* @param name The key to find in the map.
* @return true if the map contains this key.
*/
public boolean containsKey(COSName name)
{
return this.items.containsKey(name);
}
/**
* @see java.util.Map#containsKey(Object)
*
* @param name The key to find in the map.
* @return true if the map contains this key.
*/
public boolean containsKey(String name)
{
return containsKey(COSName.getPDFName(name));
}
/**
* This will add all of the dictionaries keys/values to this dictionary, but
* only if they don't already exist. If a key already exists in this
* dictionary then nothing is changed.
*
* @param dic The dictionaries to get the keys from.
*
* @deprecated This method should no longer be used and will be removed in
* 3.0 because it could also merge attributes that should not be merged
* (filter and length) in a COSStream.
*/
@Deprecated
public void mergeInto(COSDictionary dic)
{
for (Map.Entry entry : dic.entrySet())
{
if (getItem(entry.getKey()) == null)
{
setItem(entry.getKey(), entry.getValue());
}
}
}
/**
* Nice method, gives you every object you want Arrays works properly too. Try "P/Annots/[k]/Rect" where k means the
* index of the Annotsarray.
*
* @param objPath the relative path to the object.
* @return the object
*/
public COSBase getObjectFromPath(String objPath)
{
String[] path = objPath.split(PATH_SEPARATOR);
COSBase retval = this;
for (String pathString : path)
{
if (retval instanceof COSArray)
{
int idx = Integer.parseInt(pathString.replaceAll("\\[", "").replaceAll("\\]", ""));
retval = ((COSArray) retval).getObject(idx);
}
else if (retval instanceof COSDictionary)
{
retval = ((COSDictionary) retval).getDictionaryObject(pathString);
}
}
return retval;
}
/**
* Returns an unmodifiable view of this dictionary.
*
* @return an unmodifiable view of this dictionary
*/
public COSDictionary asUnmodifiableDictionary()
{
return new UnmodifiableCOSDictionary(this);
}
/**
* {@inheritDoc}
*/
@Override
public String toString()
{
try
{
return getDictionaryString(this, new ArrayList());
}
catch (IOException e)
{
return "COSDictionary{" + e.getMessage() + "}";
}
}
private static String getDictionaryString(COSBase base, List objs) throws IOException
{
if (base == null)
{
return "null";
}
if (objs.contains(base))
{
// avoid endless recursion
return String.valueOf(base.hashCode());
}
objs.add(base);
if (base instanceof COSDictionary)
{
StringBuilder sb = new StringBuilder();
sb.append("COSDictionary{");
for (Map.Entry x : ((COSDictionary) base).entrySet())
{
sb.append(x.getKey());
sb.append(":");
sb.append(getDictionaryString(x.getValue(), objs));
sb.append(";");
}
sb.append("}");
if (base instanceof COSStream)
{
InputStream stream = ((COSStream) base).createRawInputStream();
byte[] b = IOUtils.toByteArray(stream);
sb.append("COSStream{").append(Arrays.hashCode(b)).append("}");
stream.close();
}
return sb.toString();
}
if (base instanceof COSObject)
{
COSObject obj = (COSObject) base;
return "COSObject{" + getDictionaryString(obj.getObject(), objs) + "}";
}
return base.toString();
}
}