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comparison common/src/main/java/digilib/io/ImageFileSet.java @ 903:7779b37d1d05

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refactored into maven modules per servlet type. can build servlet-api 2.3 and 3.0 via profile now!
author robcast
date Tue, 26 Apr 2011 20:24:31 +0200
parents servlet/src/main/java/digilib/io/ImageFileSet.java@ba1eb2d821a2
children 4f84a635a820
comparison
equal deleted inserted replaced
902:89ba3ffcf552 903:7779b37d1d05
1 /**
2 *
3 */
4 package digilib.io;
5
6 import java.io.File;
7 import java.util.ArrayList;
8 import java.util.Arrays;
9 import java.util.Map;
10
11 import org.apache.log4j.Logger;
12
13 import digilib.io.FileOps.FileClass;
14 import digilib.meta.MetadataMap;
15 import digilib.meta.XMLMetaLoader;
16
17 /**
18 * @author casties
19 *
20 */
21 public class ImageFileSet extends ImageSet implements DocuDirent {
22
23 /** this is an image file */
24 protected static FileClass fileClass = FileClass.IMAGE;
25 /** the (main) file */
26 protected File file = null;
27 /** the file name */
28 protected String name = null;
29 /** HashMap with metadata */
30 protected MetadataMap fileMeta = null;
31 /** Is the Metadata valid */
32 protected boolean metaChecked = false;
33 /** the parent directory */
34 protected Directory parentDir = null;
35
36 /**
37 * Constructor with a File and Directories.
38 *
39 * @param file
40 * @param scaleDirs
41 */
42 public ImageFileSet(File file, Directory[] scaleDirs) {
43 int nb = scaleDirs.length;
44 list = new ArrayList<ImageInput>(nb);
45 // first dir is our parent
46 parentDir = scaleDirs[0];
47 this.file = file;
48 this.name = file.getName();
49 fill(scaleDirs, file);
50 }
51
52 /* (non-Javadoc)
53 * @see digilib.io.DocuDirent#getName()
54 */
55 public String getName() {
56 return this.name;
57 }
58
59 /* (non-Javadoc)
60 * @see digilib.io.DocuDirent#getParent()
61 */
62 public Directory getParent() {
63 return this.parentDir;
64 }
65
66 /* (non-Javadoc)
67 * @see digilib.io.DocuDirent#setParent(digilib.io.Directory)
68 */
69 public void setParent(Directory parent) {
70 this.parentDir = parent;
71 }
72
73 /* (non-Javadoc)
74 * @see digilib.io.DocuDirent#getFileMeta()
75 */
76 public MetadataMap getFileMeta() {
77 return this.fileMeta;
78 }
79
80 /* (non-Javadoc)
81 * @see digilib.io.DocuDirent#setFileMeta(digilib.io.MetadataMap)
82 */
83 public void setFileMeta(MetadataMap fileMeta) {
84 this.fileMeta = fileMeta;
85 }
86
87 /* (non-Javadoc)
88 * @see digilib.io.DocuDirent#isMetaChecked()
89 */
90 public boolean isMetaChecked() {
91 return this.metaChecked;
92 }
93
94 /* (non-Javadoc)
95 * @see digilib.io.DocuDirent#compareTo(java.lang.Object)
96 */
97 public int compareTo(Object arg0) {
98 if (arg0 instanceof DocuDirent) {
99 return name.compareTo(((DocuDirent) arg0).getName());
100 } else {
101 return getName().compareTo((String) arg0);
102 }
103 }
104
105 /* (non-Javadoc)
106 * @see digilib.io.DocuDirent#getFile()
107 */
108 public File getFile() {
109 return file;
110 }
111
112 /**
113 * Adds an ImageFile to this Fileset.
114 *
115 * The files should be added in the order of higher to lower resolutions.
116 * The first file is considered the hires "original".
117 *
118 *
119 * @param f
120 * file to add
121 * @return true (always)
122 */
123 public boolean add(ImageInput f) {
124 f.setParent(this);
125 return list.add(f);
126 }
127
128 /**
129 * Fill the ImageSet with files from different base directories.
130 *
131 *
132 * @param dirs
133 * list of base directories
134 * @param fl
135 * file (from first base dir)
136 * @param hints
137 *
138 */
139 void fill(Directory[] dirs, File fl) {
140 String fn = fl.getName();
141 String baseFn = FileOps.basename(fn);
142 // add the first ImageFile to the ImageSet
143 add(new ImageFile(fl, this, parentDir));
144 // iterate the remaining base directories
145 for (int i = 1; i < dirs.length; ++i) {
146 Directory dir = dirs[i];
147 if (dir == null) {
148 continue;
149 }
150 // read the directory
151 if (dir.getFilenames() == null) {
152 dir.readDir();
153 }
154 String[] dirFiles = dir.getFilenames();
155 // try the same filename as the original
156 int fileIdx = Arrays.binarySearch(dirFiles, fn);
157 if (fileIdx < 0) {
158 // try closest matches without extension
159 fileIdx = -fileIdx - 1;
160 // try idx
161 if ((fileIdx < dirFiles.length)
162 && (FileOps.basename(dirFiles[fileIdx]).equals(baseFn))) {
163 // idx ok
164 } else if ((fileIdx > 0)
165 && (FileOps.basename(dirFiles[fileIdx - 1])
166 .equals(baseFn))) {
167 // idx-1 ok
168 fileIdx = fileIdx - 1;
169 } else if ((fileIdx+1 < dirFiles.length)
170 && (FileOps.basename(dirFiles[fileIdx + 1])
171 .equals(baseFn))) {
172 // idx+1 ok
173 fileIdx = fileIdx + 1;
174 } else {
175 // basename doesn't match
176 continue;
177 }
178 }
179 if (FileOps.classForFilename(dirFiles[fileIdx]) == fileClass) {
180 /* logger.debug("adding file " + dirFiles[fileIdx]
181 + " to Fileset " + this.getName()); */
182 add(new ImageFile(dirFiles[fileIdx], this, dir));
183 }
184 }
185 }
186
187 /**
188 * Checks metadata and sets resolution in resX and resY.
189 *
190 */
191 public void checkMeta() {
192 if (metaChecked) {
193 return;
194 }
195 if (fileMeta == null) {
196 // try to read metadata file
197 readMeta();
198 if (fileMeta == null) {
199 // try directory metadata
200 ((DocuDirectory) parentDir).checkMeta();
201 if (((DocuDirectory) parentDir).getDirMeta() != null) {
202 fileMeta = ((DocuDirectory) parentDir).getDirMeta();
203 } else {
204 // try parent directory metadata
205 DocuDirectory gp = (DocuDirectory) parentDir.getParent();
206 if (gp != null) {
207 gp.checkMeta();
208 if (gp.getDirMeta() != null) {
209 fileMeta = gp.getDirMeta();
210 }
211 }
212 }
213 }
214 }
215 if (fileMeta == null) {
216 // no metadata available
217 metaChecked = true;
218 return;
219 }
220 metaChecked = true;
221 float dpi = 0;
222 float dpix = 0;
223 float dpiy = 0;
224 float sizex = 0;
225 float sizey = 0;
226 float pixx = 0;
227 float pixy = 0;
228 // DPI is valid for X and Y
229 if (fileMeta.containsKey("original-dpi")) {
230 try {
231 dpi = Float.parseFloat((String) fileMeta.get("original-dpi"));
232 } catch (NumberFormatException e) {
233 }
234 if (dpi != 0) {
235 resX = dpi;
236 resY = dpi;
237 return;
238 }
239 }
240 // DPI-X and DPI-Y
241 if (fileMeta.containsKey("original-dpi-x")
242 && fileMeta.containsKey("original-dpi-y")) {
243 try {
244 dpix = Float.parseFloat((String) fileMeta
245 .get("original-dpi-x"));
246 dpiy = Float.parseFloat((String) fileMeta
247 .get("original-dpi-y"));
248 } catch (NumberFormatException e) {
249 }
250 if ((dpix != 0) && (dpiy != 0)) {
251 resX = dpix;
252 resY = dpiy;
253 return;
254 }
255 }
256 // SIZE-X and SIZE-Y and PIXEL-X and PIXEL-Y
257 if (fileMeta.containsKey("original-size-x")
258 && fileMeta.containsKey("original-size-y")
259 && fileMeta.containsKey("original-pixel-x")
260 && fileMeta.containsKey("original-pixel-y")) {
261 try {
262 sizex = Float.parseFloat((String) fileMeta
263 .get("original-size-x"));
264 sizey = Float.parseFloat((String) fileMeta
265 .get("original-size-y"));
266 pixx = Float.parseFloat((String) fileMeta
267 .get("original-pixel-x"));
268 pixy = Float.parseFloat((String) fileMeta
269 .get("original-pixel-y"));
270 } catch (NumberFormatException e) {
271 }
272 if ((sizex != 0) && (sizey != 0) && (pixx != 0) && (pixy != 0)) {
273 resX = pixx / (sizex * 100 / 2.54f);
274 resY = pixy / (sizey * 100 / 2.54f);
275 return;
276 }
277 }
278 }
279
280 /* (non-Javadoc)
281 * @see digilib.io.DocuDirent#readMeta()
282 */
283 public void readMeta() {
284 if ((fileMeta != null) || (file == null)) {
285 // there is already metadata or there is no file
286 return;
287 }
288 // metadata is in the file {filename}.meta
289 String fn = file.getAbsolutePath();
290 File mf = new File(fn + ".meta");
291 if (mf.canRead()) {
292 XMLMetaLoader ml = new XMLMetaLoader();
293 try {
294 // read meta file
295 Map<String, MetadataMap> meta = ml.loadURL(mf.getAbsolutePath());
296 if (meta == null) {
297 return;
298 }
299 fileMeta = meta.get(name);
300 } catch (Exception e) {
301 Logger.getLogger(this.getClass()).warn("error reading file .meta", e);
302 }
303 }
304 }
305
306
307 }