1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
/*
* 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.
*/
/* $Id$ */
package org.apache.fop.pdf;
import java.io.IOException;
import java.io.OutputStream;
import java.util.List;
import java.util.Map;
import org.apache.commons.io.output.CountingOutputStream;
/**
* Class representing a PDF dictionary object
*/
public class PDFDictionary extends PDFObject {
/**
* the entry map
*/
protected Map<String, Object> entries = new java.util.HashMap<String, Object>();
/**
* maintains the order of the entries added to the entry map. Whenever you modify
* "entries", always make sure you adjust this list accordingly.
*/
protected List<String> order = new java.util.ArrayList<String>();
/**
* Create a new dictionary object.
*/
public PDFDictionary() {
super();
}
/**
* Create a new dictionary object.
* @param parent the object's parent if any
*/
public PDFDictionary(PDFObject parent) {
super(parent);
}
/**
* Puts a new name/value pair.
* @param name the name
* @param value the value
*/
public void put(String name, Object value) {
if (value instanceof PDFObject) {
PDFObject pdfObj = (PDFObject)value;
if (!pdfObj.hasObjectNumber()) {
pdfObj.setParent(this);
}
}
if (!entries.containsKey(name)) {
this.order.add(name);
}
this.entries.put(name, value);
}
/**
* Puts a new name/value pair.
* @param name the name
* @param value the value
*/
public void put(String name, int value) {
if (!entries.containsKey(name)) {
this.order.add(name);
}
this.entries.put(name, Integer.valueOf(value));
}
/**
* Returns the value given a name.
* @param name the name of the value
* @return the value or null, if there's no value with the given name.
*/
public Object get(String name) {
return this.entries.get(name);
}
/** {@inheritDoc} */
@Override
protected int output(OutputStream stream) throws IOException {
CountingOutputStream cout = new CountingOutputStream(stream);
StringBuilder textBuffer = new StringBuilder(64);
if (hasObjectNumber()) {
textBuffer.append(getObjectID());
}
writeDictionary(cout, textBuffer);
if (hasObjectNumber()) {
textBuffer.append("\nendobj\n");
}
PDFDocument.flushTextBuffer(textBuffer, cout);
return cout.getCount();
}
/**
* Writes the contents of the dictionary to a StringBuffer.
* @param out the OutputStream (for binary content)
* @param textBuffer the text buffer for text output
* @throws IOException if an I/O error occurs
*/
protected void writeDictionary(OutputStream out, StringBuilder textBuffer) throws IOException {
textBuffer.append("<<");
boolean compact = (this.order.size() <= 2);
for (String key : this.order) {
if (compact) {
textBuffer.append(' ');
} else {
textBuffer.append("\n ");
}
textBuffer.append(PDFName.escapeName(key));
textBuffer.append(' ');
Object obj = this.entries.get(key);
formatObject(obj, out, textBuffer);
}
if (compact) {
textBuffer.append(' ');
} else {
textBuffer.append('\n');
}
textBuffer.append(">>\n");
}
}
|
