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47 package com.lowagie.text.pdf;
48 import java.io.IOException  ;
49 import java.io.InputStream ;
50 import java.net.URL ;
51 import java.util.ArrayList ;
52 import java.util.HashMap ;
53
56 public class FdfReader extends PdfReader {
57
58 HashMap fields;
59 String fileSpec;
60 PdfName encoding;
61
62
66 public FdfReader(String filename) throws IOException {
67 super(filename);
68 }
69
70
74 public FdfReader(byte pdfIn[]) throws IOException {
75 super(pdfIn);
76 }
77
78
82 public FdfReader(URL url) throws IOException {
83 super(url);
84 }
85
86
91 public FdfReader(InputStream is) throws IOException {
92 super(is);
93 }
94
95 protected void readPdf() throws IOException {
96 fields = new HashMap ();
97 try {
98 tokens.checkFdfHeader();
99 rebuildXref();
100 readDocObj();
101 }
102 finally {
103 try {
104 tokens.close();
105 }
106 catch (Exception e) {
107 }
109 }
110 readFields();
111 }
112
113 protected void kidNode(PdfDictionary merged, String name) {
114 PdfArray kids = (PdfArray)getPdfObject(merged.get(PdfName.KIDS));
115 if (kids == null || kids.getArrayList().size() == 0) {
116 if (name.length() > 0)
117 name = name.substring(1);
118 fields.put(name, merged);
119 }
120 else {
121 merged.remove(PdfName.KIDS);
122 ArrayList ar = kids.getArrayList();
123 for (int k = 0; k < ar.size(); ++k) {
124 PdfDictionary dic = new PdfDictionary();
125 dic.merge(merged);
126 PdfDictionary newDic = (PdfDictionary)getPdfObject((PdfObject)ar.get(k));
127 PdfString t = (PdfString)getPdfObject(newDic.get(PdfName.T));
128 String newName = name;
129 if (t != null)
130 newName += "." + t.toUnicodeString();
131 dic.merge(newDic);
132 dic.remove(PdfName.T);
133 kidNode(dic, newName);
134 }
135 }
136 }
137
138 protected void readFields() {
139 catalog = (PdfDictionary)getPdfObject(trailer.get(PdfName.ROOT));
140 PdfDictionary fdf = (PdfDictionary)getPdfObject(catalog.get(PdfName.FDF));
141 PdfString fs = (PdfString)getPdfObject(fdf.get(PdfName.F));
142 if (fs != null)
143 fileSpec = fs.toUnicodeString();
144 PdfArray fld = (PdfArray)getPdfObject(fdf.get(PdfName.FIELDS));
145 if (fld == null)
146 return;
147 encoding = (PdfName)getPdfObject(fdf.get(PdfName.ENCODING));
148 PdfDictionary merged = new PdfDictionary();
149 merged.put(PdfName.KIDS, fld);
150 kidNode(merged, "");
151 }
152
153
158 public HashMap getFields() {
159 return fields;
160 }
161
162
166 public PdfDictionary getField(String name) {
167 return (PdfDictionary)fields.get(name);
168 }
169
170
175 public String getFieldValue(String name) {
176 PdfDictionary field = (PdfDictionary)fields.get(name);
177 if (field == null)
178 return null;
179 PdfObject v = getPdfObject(field.get(PdfName.V));
180 if (v == null)
181 return null;
182 if (v.isName())
183 return PdfName.decodeName(((PdfName)v).toString());
184 else if (v.isString()) {
185 PdfString vs = (PdfString)v;
186 if (encoding == null || vs.getEncoding() != null)
187 return vs.toUnicodeString();
188 byte b[] = vs.getBytes();
189 if (b.length >= 2 && b[0] == (byte)254 && b[1] == (byte)255)
190 return vs.toUnicodeString();
191 try {
192 if (encoding.equals(PdfName.SHIFT_JIS))
193 return new String (b, "SJIS");
194 else if (encoding.equals(PdfName.UHC))
195 return new String (b, "MS949");
196 else if (encoding.equals(PdfName.GBK))
197 return new String (b, "GBK");
198 else if (encoding.equals(PdfName.BIGFIVE))
199 return new String (b, "Big5");
200 }
201 catch (Exception e) {
202 }
203 return vs.toUnicodeString();
204 }
205 return null;
206 }
207
208
211 public String getFileSpec() {
212 return fileSpec;
213 }
214 } |
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