| commit | author | age | ||
| fad719 | 1 | /* |
| U | 2 | |
| 3 | Dateiverwaltung - File management in your browser | |
| 4 | Copyright (C) 2017 Ulrich Hilger, http://uhilger.de | |
| 5 | ||
| 6 | This program is free software: you can redistribute it and/or modify | |
| 7 | it under the terms of the GNU Affero General Public License as | |
| 8 | published by the Free Software Foundation, either version 3 of the | |
| 9 | License, or (at your option) any later version. | |
| 10 | ||
| 11 | This program is distributed in the hope that it will be useful, | |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | GNU Affero General Public License for more details. | |
| 15 | ||
| 16 | You should have received a copy of the GNU Affero General Public License | |
| 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 18 | ||
| 19 | */ | |
| 20 | ||
| 21 | package de.uhilger.filecms.api; | |
| 22 | ||
| bf105c | 23 | import de.uhilger.filecms.data.Bild; |
| U | 24 | import java.awt.Container; |
| 25 | import java.awt.Image; | |
| 26 | import java.awt.MediaTracker; | |
| 27 | import java.awt.Toolkit; | |
| fad719 | 28 | import java.io.BufferedReader; |
| U | 29 | import java.io.File; |
| 30 | import java.io.FileFilter; | |
| 31 | import java.io.FileNotFoundException; | |
| 32 | import java.io.FileReader; | |
| 33 | import java.io.IOException; | |
| 34 | import java.io.PrintWriter; | |
| 35 | import java.util.logging.Level; | |
| 36 | import java.util.logging.Logger; | |
| 37 | import org.apache.commons.io.FileUtils; | |
| 38 | ||
| 39 | /** | |
| 40 | * Die Klasse HtmlExportService stellt Methoden bereit, mit denen | |
| 41 | * .htmi-Dateien der WebBox zusammen mit Bildern und Stylesheets als | |
| 42 | * Ordner exportierten werden koennen, aus denen heraus die Inhalte | |
| 43 | * als HTML-Seiten im Browser zu oeffnen sind. | |
| 44 | */ | |
| 45 | public class HtmlExportService extends Api { | |
| 46 | ||
| 47 | private static final Logger logger = Logger.getLogger(HtmlExportService.class.getName()); | |
| 48 | ||
| 49 | /** | |
| 50 | * Den Inhalt eines Ordners als HTML exportieren | |
| 51 | * | |
| 52 | * Annahme hierbei ist, dass der Ordner, auf den im Parameter relPath | |
| 53 | * verwiesen wird eine oder mehrere .htmi-Dateien enthaelt. Optional | |
| 54 | * koennen Bilder im Ordner oder seinen Unterordnern enthalten sein, die | |
| 55 | * dann in derselben Struktur im Ausgabeordner landen. | |
| 56 | * | |
| 57 | * Es werden nur .htmi-Dateien exortiert, die im mit relPath bezeichneten | |
| 58 | * Ordner liegen. Eventuell in darin befindlichen Unterordnern befindliche | |
| bf105c | 59 | * .htmi-Dateien werden nicht exportiert. |
| fad719 | 60 | * |
| bf105c | 61 | * Es sollen keine komplexen Webseiten-Strukturen mit dieser Methode |
| fad719 | 62 | * erzeugt werden sondern einfache Dokumente mit einer oder wenigen |
| U | 63 | * einzelnen Dateien. |
| 64 | * | |
| 65 | * Die Ausgabe erfolgt in den Ordner, in dem der mit relPath bezeichnete | |
| 66 | * Ordner liegt, also in dessen Eltern-Ordner. Der ausgegebene Ordner heisst | |
| 67 | * genauso wir der mit relPath bezeichnete Ordner und wird mit der | |
| 68 | * Ergaenzung _html versehen. | |
| 69 | * | |
| 70 | * @param relPath | |
| 71 | * @return 'ok' oder Fehlermeldung | |
| 72 | */ | |
| 73 | public String exportHtml(String relPath) { | |
| 74 | String result = null; | |
| 75 | File dir = getTargetDir(relPath); | |
| 76 | File parentDir = dir.getParentFile(); | |
| 77 | File outDir = new File(parentDir, dir.getName() + "_html/"); | |
| 78 | File[] files = dir.listFiles(new HtmiFileFilter()); | |
| 79 | for(int i = 0; i < files.length; i++) { | |
| 80 | if (files[i].isDirectory()) { | |
| 81 | try { | |
| 82 | FileUtils.copyDirectoryToDirectory(files[i], outDir); | |
| 83 | } catch (IOException ex) { | |
| 84 | result = ex.getLocalizedMessage(); | |
| 85 | logger.log(Level.SEVERE, ex.getLocalizedMessage(), ex); | |
| 86 | } | |
| 87 | } else { | |
| 88 | BufferedReader br = null; | |
| 89 | try { | |
| 90 | File out = new File(outDir, stripExt(files[i].getName()) + ".html"); | |
| 21589e | 91 | if(!out.exists()) { |
| U | 92 | logger.fine(out.getAbsolutePath() + " existiert nicht, erzeuge Datei.."); |
| 93 | out.getParentFile().mkdirs(); | |
| 94 | out.createNewFile(); | |
| 95 | } | |
| fad719 | 96 | PrintWriter w = new PrintWriter(out); |
| U | 97 | printHeader(w); |
| 98 | br = new BufferedReader(new FileReader(files[i])); | |
| 99 | String line = br.readLine(); | |
| 100 | while(line != null) { | |
| 21589e | 101 | w.print(line.replace("htmi", "html")); |
| fad719 | 102 | line = br.readLine(); |
| U | 103 | } |
| 104 | printFooter(w); | |
| 105 | w.flush(); | |
| 106 | w.close(); | |
| 107 | br.close(); | |
| 108 | } catch (FileNotFoundException ex) { | |
| 109 | result = ex.getLocalizedMessage(); | |
| 110 | logger.log(Level.SEVERE, ex.getLocalizedMessage(), ex); | |
| 111 | } catch (IOException ex) { | |
| 112 | result = ex.getLocalizedMessage(); | |
| 113 | logger.log(Level.SEVERE, ex.getLocalizedMessage(), ex); | |
| 114 | } finally { | |
| 115 | try { | |
| 116 | if(br != null) { | |
| 117 | br.close(); | |
| 118 | } | |
| 119 | } catch (IOException ex) { | |
| 120 | result = ex.getLocalizedMessage(); | |
| 121 | logger.log(Level.SEVERE, ex.getLocalizedMessage(), ex); | |
| 122 | } | |
| 123 | } | |
| 124 | } | |
| 125 | } | |
| 6e1a29 | 126 | File catalinaBase = new File(getCatalinaBase(getServletContext())); |
| fad719 | 127 | File bsDir = new File(catalinaBase, "webapps/jslib/bootstrap/css/"); |
| U | 128 | try { |
| 129 | FileUtils.copyFile(new File(bsDir, "bootstrap.min.css"), new File(outDir, "bootstrap.min.css"), true); | |
| 130 | File stile = new File(dir, "stile.css"); | |
| 131 | if(stile.exists()) { | |
| 132 | FileUtils.copyFile(stile, new File(outDir, "stile.css"), true); | |
| 133 | } | |
| bf105c | 134 | buildThumbnailImages(outDir, new Bild()); |
| 21589e | 135 | result = "Export nach HTML ausgefuehrt."; |
| fad719 | 136 | } catch (IOException ex) { |
| U | 137 | result = ex.getLocalizedMessage(); |
| 138 | logger.log(Level.SEVERE, ex.getLocalizedMessage(), ex); | |
| 139 | } | |
| 140 | return result; | |
| bf105c | 141 | } |
| U | 142 | |
| 143 | /** | |
| 144 | * Minituransichten der Bilddateien erzeugen, die beim HTML-Export | |
| 145 | * entstanden sind. | |
| 146 | * | |
| 147 | * Die Methode erstellt fuer alle Dateien mit Endung png oder jpg | |
| 148 | * eine weitere Bilddatei mit Namen [Name]_tn.[Endung]. Also z.B. | |
| 149 | * bild_tn.jpg fuer die Datei bild.jpg | |
| 150 | */ | |
| 151 | private void buildThumbnailImages(File dir, Bild bild) { | |
| 152 | logger.fine("Minituransichten dir: " + dir.getAbsolutePath()); | |
| 153 | File[] files = dir.listFiles(new ImageFileFilter()); | |
| 154 | if(files != null) { | |
| 155 | for(int i = 0; i < files.length; i++) { | |
| 156 | if(files[i].isDirectory()) { | |
| 157 | buildThumbnailImages(files[i], bild); | |
| 158 | } else { | |
| 159 | String absPath = files[i].getAbsolutePath(); | |
| 160 | logger.fine("Miniaturansicht fuer Bild " + absPath); | |
| 161 | String fname = files[i].getName(); | |
| 162 | logger.fine("fname: " + fname); | |
| 163 | int dotPos = fname.lastIndexOf("."); | |
| 164 | logger.fine("dotPos: " + dotPos); | |
| 165 | StringBuffer tnFileName = new StringBuffer(); | |
| 166 | if(dotPos > -1) { | |
| 167 | String fname_no_ext = fname.substring(0, dotPos); | |
| 168 | logger.fine("fname_no_ext: " + fname_no_ext); | |
| 169 | String fext = fname.substring(dotPos); | |
| 170 | logger.fine("fext: " + fext); | |
| 171 | tnFileName.append(fname_no_ext); | |
| 172 | tnFileName.append("_tn"); | |
| 173 | //tnFileName.append("."); | |
| 174 | tnFileName.append(fext); | |
| 175 | } else { | |
| 176 | tnFileName.append(fname); | |
| 177 | tnFileName.append("_tn"); | |
| 178 | } | |
| 179 | String outFileName = new File(dir, tnFileName.toString()).getAbsolutePath(); | |
| 180 | logger.fine("outFileName: " + outFileName); | |
| 181 | Image image = Toolkit.getDefaultToolkit().getImage(absPath); | |
| 182 | MediaTracker mediaTracker = new MediaTracker(new Container()); | |
| 183 | mediaTracker.addImage(image, 0); | |
| 184 | try { | |
| 185 | mediaTracker.waitForID(0); | |
| 186 | ||
| 187 | if (!mediaTracker.isErrorAny()) { | |
| 188 | bild.writeImageFile(image, bild.getVariantenGroesse(Bild.WINZIG), bild.getMimeType(files[i]), outFileName); | |
| 189 | } else { | |
| 190 | logger.fine("Fehler: Miniaturansicht konnte nicht erzeugt werden"); | |
| 191 | } | |
| 192 | } catch (InterruptedException | IOException ex) { | |
| 193 | logger.log(Level.SEVERE, ex.getLocalizedMessage(), ex); | |
| 194 | } | |
| 195 | } | |
| 196 | } | |
| 197 | } else { | |
| 198 | logger.fine("files ist null"); | |
| 199 | } | |
| fad719 | 200 | } |
| U | 201 | |
| 202 | private String stripExt(String name) { | |
| 203 | int dotpos = name.indexOf("."); | |
| 204 | if(dotpos > -1) { | |
| 205 | name = name.substring(0, dotpos); | |
| 206 | } | |
| 207 | return name; | |
| 208 | } | |
| 209 | ||
| 210 | public class HtmiFileFilter implements FileFilter { | |
| 211 | ||
| 212 | @Override | |
| 213 | public boolean accept(File pathname) { | |
| 214 | boolean doAccept = false; | |
| 215 | if(pathname.getName().endsWith(".htmi") || pathname.isDirectory()) { | |
| 216 | doAccept = true; | |
| 217 | } | |
| 218 | return doAccept; | |
| 219 | } | |
| 220 | ||
| 221 | } | |
| 222 | ||
| bf105c | 223 | public class ImageFileFilter implements FileFilter { |
| U | 224 | |
| 225 | @Override | |
| 226 | public boolean accept(File pathname) { | |
| 227 | boolean doAccept = false; | |
| 228 | String lcName = pathname.getName().toLowerCase(); | |
| 229 | if( lcName.endsWith(".jpg") || | |
| 230 | lcName.endsWith(".jpeg") || | |
| 231 | lcName.endsWith(".png") || | |
| 232 | pathname.isDirectory()) { | |
| 233 | if(!lcName.contains("_tn")) { | |
| 234 | doAccept = true; | |
| 235 | } | |
| 236 | } | |
| 237 | return doAccept; | |
| 238 | } | |
| 239 | ||
| 240 | } | |
| 241 | ||
| fad719 | 242 | private void printHeader(PrintWriter out) throws IOException { |
| U | 243 | out.print("<!DOCTYPE html><html><head>\r\n"); |
| 244 | out.print("<meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"/>"); | |
| 245 | out.print("<link rel=\"stylesheet\" type=\"text/css\" href=\"bootstrap.min.css\">\r\n"); | |
| 246 | out.print("<link rel=\"stylesheet\" type=\"text/css\" href=\"stile.css\">\r\n"); | |
| 247 | out.print("</head><body class=\"p-3\">\r\n"); | |
| 248 | } | |
| 249 | ||
| 250 | private void printFooter(PrintWriter out) throws IOException { | |
| 251 | out.print("</body></html>"); | |
| 252 | } | |
| 253 | ||
| 254 | ||
| 255 | ||
| 256 | } | |
