3 Copyright(c)2008 Internet Archive. Software license AGPL version 3.
5 This file is part of GnuBook.
7 GnuBook is free software: you can redistribute it and/or modify
8 it under the terms of the GNU Affero General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
12 GnuBook is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU Affero General Public License for more details.
17 You should have received a copy of the GNU Affero General Public License
18 along with GnuBook. If not, see <http://www.gnu.org/licenses/>.
21 $id = $_REQUEST['id'];
22 $itemPath = $_REQUEST['itemPath'];
23 $subPrefix = $_REQUEST['subPrefix'];
24 $server = $_REQUEST['server'];
26 // Check if we're on a dev vhost and point to JSIA in the user's public_html on the datanode
27 // $$$ TODO consolidate this logic
28 if (strpos($_SERVER["REQUEST_URI"], "/~mang") === 0) { // Serving out of home dir
29 $server .= ':80/~mang';
30 } else if (strpos($_SERVER["REQUEST_URI"], "/~testflip") === 0) { // Serving out of home dir
31 $server .= ':80/~testflip';
35 $subItemPath = $itemPath . '/' . $subPrefix;
37 $subItemPath = $itemPath . '/' . $id;
41 GBFatal("No identifier specified!");
44 if ("" == $itemPath) {
45 GBFatal("No itemPath specified!");
49 GBFatal("No server specified!");
52 if (!preg_match("|^/[0-3]/items/{$id}$|", $itemPath)) {
56 // XXX check here that subitem is okay
58 $imageFormat = 'unknown';
59 $zipFile = "${subItemPath}_jp2.zip";
61 if (file_exists($zipFile)) {
64 $zipFile = "${subItemPath}_tif.zip";
65 if (file_exists($zipFile)) {
70 if ("unknown" == $imageFormat) {
71 GBfatal("Unknown image format");
74 $scanDataFile = "${subItemPath}_scandata.xml";
75 $scanDataZip = "$itemPath/scandata.zip";
76 if (file_exists($scanDataFile)) {
77 $scanData = simplexml_load_file($scanDataFile);
78 } else if (file_exists($scanDataZip)) {
79 $cmd = 'unzip -p ' . escapeshellarg($scanDataZip) . ' scandata.xml';
80 exec($cmd, $output, $retval);
81 if ($retval != 0) GBFatal("Could not unzip ScanData!");
83 $dump = join("\n", $output);
84 $scanData = simplexml_load_string($dump);
85 } else if (file_exists("$itemPath/scandata.xml")) {
86 // For e.g. Scribe v.0 books!
87 $scanData = simplexml_load_file("$itemPath/scandata.xml");
89 GBFatal("ScanData file not found!");
92 $metaDataFile = "$itemPath/{$id}_meta.xml";
93 if (!file_exists($metaDataFile)) {
94 GBFatal("MetaData file not found!");
98 $metaData = simplexml_load_file($metaDataFile);
100 //$firstLeaf = $scanData->pageData->page[0]['leafNum'];
106 /* Output title leaf if marked */
108 foreach ($scanData->pageData->page as $page) {
109 if (("Title Page" == $page->pageType) || ("Title" == $page->pageType)) {
110 $titleLeaf = "{$page['leafNum']}";
115 if ('' != $titleLeaf) {
116 printf("gb.titleLeaf = %d;\n", $titleLeaf);
120 gb.getPageWidth = function(index) {
121 //return parseInt(this.pageW[index]/this.reduce);
122 return this.pageW[index];
125 gb.getPageHeight = function(index) {
126 //return parseInt(this.pageH[index]/this.reduce);
127 return this.pageH[index];
130 gb.getPageURI = function(index) {
131 var leafStr = '0000';
132 var imgStr = this.leafMap[index].toString();
133 var re = new RegExp("0{"+imgStr.length+"}$");
135 var insideZipPrefix = this.subPrefix.match('[^/]+$');
136 var file = insideZipPrefix + '_' + this.imageFormat + '/' + insideZipPrefix + '_' + leafStr.replace(re, imgStr) + '.' + this.imageFormat;
138 // $$$ add more image stack formats here
140 var url = 'http://'+this.server+'/GnuBook/GnuBookImages.php?zip='+this.zip+'&file='+file+'&scale='+this.reduce;
142 var ratio = this.getPageHeight(index) / this.twoPage.height;
144 // $$$ we make an assumption here that the scales are available pow2 (like kakadu)
147 } else if (ratio <= 4) {
149 } else if (ratio <= 8) {
151 } else if (ratio <= 16) {
153 } else if (ratio <= 32) {
159 var url = 'http://'+this.server+'/GnuBook/GnuBookImages.php?zip='+this.zip+'&file='+file+'&scale='+scale;
165 gb.getPageSide = function(index) {
166 //assume the book starts with a cover (right-hand leaf)
167 //we should really get handside from scandata.xml
169 <? // Use special function if we should infer the page sides based off the title page index
170 if (preg_match('/goog$/', $id) && ('' != $titleLeaf)) {
172 // assume page side based on title page
173 var titleIndex = gb.leafNumToIndex(gb.titleLeaf);
174 // assume title page is RHS
175 var delta = titleIndex - index;
176 if (0 == (delta & 0x1)) {
186 // $$$ we should get this from scandata instead of assuming the accessible
187 // leafs are contiguous
188 if ('rl' != this.pageProgression) {
189 // If pageProgression is not set RTL we assume it is LTR
190 if (0 == (index & 0x1)) {
191 // Even-numbered page
199 if (0 == (index & 0x1)) {
207 gb.getPageNum = function(index) {
208 var pageNum = this.pageNums[index];
216 gb.leafNumToIndex = function(leafNum) {
217 var index = jQuery.inArray(leafNum, this.leafMap);
225 // This function returns the left and right indices for the user-visible
226 // spread that contains the given index. The return values may be
227 // null if there is no facing page or the index is invalid.
228 gb.getSpreadIndices = function(pindex) {
229 // $$$ we could make a separate function for the RTL case and
230 // only bind it if necessary instead of always checking
231 // $$$ we currently assume there are no gaps
233 var spreadIndices = [null, null];
234 if ('rl' == this.pageProgression) {
236 if (this.getPageSide(pindex) == 'R') {
237 spreadIndices[1] = pindex;
238 spreadIndices[0] = pindex + 1;
240 // Given index was LHS
241 spreadIndices[0] = pindex;
242 spreadIndices[1] = pindex - 1;
246 if (this.getPageSide(pindex) == 'L') {
247 spreadIndices[0] = pindex;
248 spreadIndices[1] = pindex + 1;
250 // Given index was RHS
251 spreadIndices[1] = pindex;
252 spreadIndices[0] = pindex - 1;
256 //console.log(" index %d mapped to spread %d,%d", pindex, spreadIndices[0], spreadIndices[1]);
258 return spreadIndices;
261 // Remove the page number assertions for all but the highest index page with
262 // a given assertion. Ensures there is only a single page "{pagenum}"
263 // e.g. the last page asserted as page 5 retains that assertion.
264 gb.uniquifyPageNums = function() {
267 for (var i = gb.pageNums.length - 1; i--; i >= 0) {
268 var pageNum = gb.pageNums[i];
269 if ( !seen[pageNum] ) {
270 seen[pageNum] = true;
272 gb.pageNums[i] = null;
278 gb.cleanupMetadata = function() {
279 gb.uniquifyPageNums();
285 foreach ($scanData->pageData->page as $page) {
286 if (shouldAddPage($page)) {
287 if(0 != $i) echo ","; //stupid IE
288 echo "{$page->cropBox->w}";
299 foreach ($scanData->pageData->page as $page) {
300 if (shouldAddPage($page)) {
301 if(0 != $i) echo ","; //stupid IE
302 echo "{$page->cropBox->h}";
303 $totalHeight += intval($page->cropBox->h/4) + 10;
312 foreach ($scanData->pageData->page as $page) {
313 if (shouldAddPage($page)) {
314 if(0 != $i) echo ","; //stupid IE
315 echo "{$page['leafNum']}";
325 foreach ($scanData->pageData->page as $page) {
326 if (shouldAddPage($page)) {
327 if(0 != $i) echo ","; //stupid IE
328 if (array_key_exists('pageNumber', $page) && ('' != $page->pageNumber)) {
329 echo "'{$page->pageNumber}'";
340 gb.numLeafs = gb.pageW.length;
342 gb.bookId = '<?echo $id;?>';
343 gb.zip = '<?echo $zipFile;?>';
344 gb.subPrefix = '<?echo $subPrefix;?>';
345 gb.server = '<?echo $server;?>';
346 gb.bookTitle= '<?echo preg_replace("/\'/", "\\'", $metaData->title);?>';
347 gb.bookPath = '<?echo $subItemPath;?>';
348 gb.bookUrl = '<?echo "http://www.archive.org/details/$id";?>';
349 gb.imageFormat = '<?echo $imageFormat;?>';
353 # Load some values from meta.xml
354 if ('' != $metaData->{'page-progression'}) {
355 echo "gb.pageProgression = '" . $metaData->{"page-progression"} . "';";
357 // Assume page progression is Left To Right
358 echo "gb.pageProgression = 'lr';";
362 if ('bandersnatchhsye00scarrich' == $id) {
363 echo "gb.mode = 2;\n";
364 echo "gb.auto = true;\n";
369 // Check for config object
370 // $$$ change this to use the newer params object
371 if (typeof(gbConfig) != 'undefined') {
372 if (typeof(gbConfig["ui"]) != 'undefined') {
373 gb.ui = gbConfig["ui"];
376 if (gbConfig['mode'] == 1) {
378 if (typeof(gbConfig['reduce'] != 'undefined')) {
379 gb.reduce = gbConfig['reduce'];
381 } else if (gbConfig['mode'] == 2) {
385 //$$$mang hack to override request for 2up for books with attribution page
386 // as first page until we can display that page in 2up
388 if (strrpos($id, $needle) === strlen($id)-strlen($needle)) {
389 print "// override for books with attribution page\n";
390 print "gb.mode = 1;\n";
396 gb.cleanupMetadata();
402 function GBFatal($string) {
403 echo "alert('$string')\n";
407 // Returns true if a page should be added based on it's information in
409 function shouldAddPage($page) {
410 // Return false only if the page is marked addToAccessFormats false.
411 // If there is no assertion we assume it should be added.
412 if (isset($page->addToAccessFormats)) {
413 if ("false" == strtolower(trim($page->addToAccessFormats))) {