| 1 | /******************************************************************************* |
| 2 | * Copyright (c) 2009 IBM Corporation and others. |
| 3 | * All rights reserved. This program and the accompanying materials |
| 4 | * are made available under the terms of the Eclipse Public License v1.0 |
| 5 | * which accompanies this distribution, and is available at |
| 6 | * http://www.eclipse.org/legal/epl-v10.html |
| 7 | * |
| 8 | * Contributors: |
| 9 | * IBM Corporation - initial API and implementation |
| 10 | *******************************************************************************/ |
| 11 | package org.eclipse.pde.api.tools.internal.model; |
| 12 | |
| 13 | import java.io.IOException; |
| 14 | import java.io.InputStream; |
| 15 | import java.util.ArrayList; |
| 16 | import java.util.Arrays; |
| 17 | import java.util.Collections; |
| 18 | import java.util.Enumeration; |
| 19 | import java.util.HashMap; |
| 20 | import java.util.HashSet; |
| 21 | import java.util.Iterator; |
| 22 | import java.util.List; |
| 23 | import java.util.Map; |
| 24 | import java.util.Set; |
| 25 | import java.util.zip.ZipEntry; |
| 26 | import java.util.zip.ZipFile; |
| 27 | |
| 28 | import org.eclipse.core.runtime.CoreException; |
| 29 | import org.eclipse.pde.api.tools.internal.provisional.ApiPlugin; |
| 30 | import org.eclipse.pde.api.tools.internal.provisional.model.ApiTypeContainerVisitor; |
| 31 | import org.eclipse.pde.api.tools.internal.provisional.model.IApiElement; |
| 32 | import org.eclipse.pde.api.tools.internal.provisional.model.IApiType; |
| 33 | import org.eclipse.pde.api.tools.internal.provisional.model.IApiTypeContainer; |
| 34 | import org.eclipse.pde.api.tools.internal.provisional.model.IApiTypeRoot; |
| 35 | import org.eclipse.pde.api.tools.internal.util.Util; |
| 36 | |
| 37 | /** |
| 38 | * {@link IApiTypeContainer} container for an archive (jar or zip) file. |
| 39 | * |
| 40 | * @since 1.0.0 |
| 41 | */ |
| 42 | public class StubArchiveApiTypeContainer extends ApiElement implements IApiTypeContainer { |
| 43 | |
| 44 | /** |
| 45 | * {@link IApiTypeRoot} implementation within an archive |
| 46 | */ |
| 47 | static class ArchiveApiTypeRoot extends AbstractApiTypeRoot implements Comparable { |
| 48 | |
| 49 | private String fTypeName; |
| 50 | |
| 51 | /* (non-Javadoc) |
| 52 | * @see org.eclipse.pde.api.tools.internal.provisional.IApiTypeRoot#getStructure() |
| 53 | */ |
| 54 | public IApiType getStructure() throws CoreException { |
| 55 | return TypeStructureBuilder.buildStubTypeStructure(getContents(), getApiComponent(), this); |
| 56 | } |
| 57 | /** |
| 58 | * Constructs a new handle to an {@link IApiTypeRoot} in the archive. |
| 59 | * |
| 60 | * @param container archive |
| 61 | * @param entryName zip entry name |
| 62 | */ |
| 63 | public ArchiveApiTypeRoot(StubArchiveApiTypeContainer container, String entryName) { |
| 64 | super(container, entryName); |
| 65 | } |
| 66 | |
| 67 | /* (non-Javadoc) |
| 68 | * @see org.eclipse.pde.api.tools.manifest.IClassFile#getTypeName() |
| 69 | */ |
| 70 | public String getTypeName() { |
| 71 | if (fTypeName == null) { |
| 72 | fTypeName = getName().replace('/', '.').substring(0, getName().length() - Util.DOT_CLASS_SUFFIX.length()); |
| 73 | } |
| 74 | return fTypeName; |
| 75 | } |
| 76 | |
| 77 | /* (non-Javadoc) |
| 78 | * @see java.lang.Comparable#compareTo(java.lang.Object) |
| 79 | */ |
| 80 | public int compareTo(Object o) { |
| 81 | return getTypeName().compareTo(((ArchiveApiTypeRoot)o).getTypeName()); |
| 82 | } |
| 83 | |
| 84 | /** |
| 85 | * @see java.lang.Object#equals(java.lang.Object) |
| 86 | */ |
| 87 | public boolean equals(Object obj) { |
| 88 | if (obj instanceof ArchiveApiTypeRoot) { |
| 89 | ArchiveApiTypeRoot classFile = (ArchiveApiTypeRoot) obj; |
| 90 | return this.getName().equals(classFile.getName()); |
| 91 | } |
| 92 | return false; |
| 93 | } |
| 94 | |
| 95 | /** |
| 96 | * @see java.lang.Object#hashCode() |
| 97 | */ |
| 98 | public int hashCode() { |
| 99 | return getName().hashCode(); |
| 100 | } |
| 101 | |
| 102 | /* (non-Javadoc) |
| 103 | * @see org.eclipse.pde.api.tools.internal.model.AbstractApiTypeRoot#getContents() |
| 104 | */ |
| 105 | public byte[] getContents() throws CoreException { |
| 106 | StubArchiveApiTypeContainer archive = (StubArchiveApiTypeContainer) getParent(); |
| 107 | ZipFile zipFile = archive.open(); |
| 108 | ZipEntry entry = zipFile.getEntry(getName()); |
| 109 | InputStream stream = null; |
| 110 | if (entry != null) { |
| 111 | try { |
| 112 | stream = zipFile.getInputStream(entry); |
| 113 | } catch (IOException e) { |
| 114 | abort("Failed to open class file: " + getTypeName() + " in archive: " + archive.fLocation, e); //$NON-NLS-1$ //$NON-NLS-2$ |
| 115 | return null; |
| 116 | } |
| 117 | try { |
| 118 | return Util.getInputStreamAsByteArray(stream, -1); |
| 119 | } |
| 120 | catch(IOException ioe) { |
| 121 | abort("Unable to read class file: " + getTypeName(), ioe); //$NON-NLS-1$ |
| 122 | return null; // never gets here |
| 123 | } |
| 124 | finally { |
| 125 | try { |
| 126 | stream.close(); |
| 127 | } catch (IOException e) { |
| 128 | ApiPlugin.log(e); |
| 129 | } |
| 130 | } |
| 131 | } |
| 132 | abort("Class file not found: " + getTypeName() + " in archive: " + archive.fLocation, null); //$NON-NLS-1$ //$NON-NLS-2$ |
| 133 | return null; |
| 134 | } |
| 135 | } |
| 136 | |
| 137 | /** |
| 138 | * Location of the archive in the local file system. |
| 139 | */ |
| 140 | String fLocation; |
| 141 | |
| 142 | /** |
| 143 | * Cache of package names to class file paths in that package, |
| 144 | * or <code>null</code> if not yet initialized. |
| 145 | */ |
| 146 | private Map fPackages; |
| 147 | |
| 148 | /** |
| 149 | * Cache of package names in this archive. |
| 150 | */ |
| 151 | private String[] fPackageNames; |
| 152 | |
| 153 | /** |
| 154 | * Open zip file, or <code>null</code> if file is currently closed. |
| 155 | */ |
| 156 | private ZipFile fZipFile = null; |
| 157 | |
| 158 | /** |
| 159 | * Constructs an {@link IApiTypeContainer} container for the given jar or zip file |
| 160 | * at the specified location. |
| 161 | * |
| 162 | * @param parent the parent {@link IApiElement} or <code>null</code> if none |
| 163 | * @param path location of the file in the local file system |
| 164 | */ |
| 165 | public StubArchiveApiTypeContainer(IApiElement parent, String path) { |
| 166 | super(parent, IApiElement.API_TYPE_CONTAINER, path); |
| 167 | this.fLocation = path; |
| 168 | } |
| 169 | |
| 170 | /** |
| 171 | * @see org.eclipse.pde.api.tools.internal.AbstractApiTypeContainer#accept(org.eclipse.pde.api.tools.internal.provisional.ApiTypeContainerVisitor) |
| 172 | */ |
| 173 | public void accept(ApiTypeContainerVisitor visitor) throws CoreException { |
| 174 | if(visitor.visit(this)) { |
| 175 | init(); |
| 176 | List packages = new ArrayList(fPackages.keySet()); |
| 177 | Collections.sort(packages); |
| 178 | Iterator iterator = packages.iterator(); |
| 179 | while (iterator.hasNext()) { |
| 180 | String pkg = (String) iterator.next(); |
| 181 | if (visitor.visitPackage(pkg)) { |
| 182 | List types = new ArrayList((Set) fPackages.get(pkg)); |
| 183 | Iterator cfIterator = types.iterator(); |
| 184 | List classFiles = new ArrayList(types.size()); |
| 185 | while (cfIterator.hasNext()) { |
| 186 | String entryName = (String) cfIterator.next(); |
| 187 | classFiles.add(new ArchiveApiTypeRoot(this, entryName)); |
| 188 | } |
| 189 | Collections.sort(classFiles); |
| 190 | cfIterator = classFiles.iterator(); |
| 191 | while (cfIterator.hasNext()) { |
| 192 | ArchiveApiTypeRoot classFile = (ArchiveApiTypeRoot) cfIterator.next(); |
| 193 | visitor.visit(pkg, classFile); |
| 194 | visitor.end(pkg, classFile); |
| 195 | } |
| 196 | } |
| 197 | visitor.endVisitPackage(pkg); |
| 198 | } |
| 199 | } |
| 200 | visitor.end(this); |
| 201 | } |
| 202 | |
| 203 | /** |
| 204 | * @see java.lang.Object#toString() |
| 205 | */ |
| 206 | public String toString() { |
| 207 | StringBuffer buff = new StringBuffer(); |
| 208 | buff.append("Archive Class File Container: "+getName()); //$NON-NLS-1$ |
| 209 | return buff.toString(); |
| 210 | } |
| 211 | |
| 212 | /** |
| 213 | * @see org.eclipse.pde.api.tools.internal.AbstractApiTypeContainer#close() |
| 214 | */ |
| 215 | public synchronized void close() throws CoreException { |
| 216 | if (fZipFile != null) { |
| 217 | try { |
| 218 | fZipFile.close(); |
| 219 | fZipFile = null; |
| 220 | } catch (IOException e) { |
| 221 | abort("Failed to close class file archive", e); //$NON-NLS-1$ |
| 222 | } |
| 223 | } |
| 224 | } |
| 225 | |
| 226 | /** |
| 227 | * @see org.eclipse.pde.api.tools.internal.provisional.IApiTypeContainer#findTypeRoot(java.lang.String) |
| 228 | */ |
| 229 | public IApiTypeRoot findTypeRoot(String qualifiedName) throws CoreException { |
| 230 | init(); |
| 231 | int index = qualifiedName.lastIndexOf('.'); |
| 232 | String packageName = Util.DEFAULT_PACKAGE_NAME; |
| 233 | if (index >= 0) { |
| 234 | packageName = qualifiedName.substring(0, index); |
| 235 | } |
| 236 | Set classFileNames = (Set) fPackages.get(packageName); |
| 237 | if (classFileNames != null) { |
| 238 | String fileName = qualifiedName.replace('.', '/'); |
| 239 | if (classFileNames.contains(fileName)) { |
| 240 | return new ArchiveApiTypeRoot(this, fileName); |
| 241 | } |
| 242 | } |
| 243 | return null; |
| 244 | } |
| 245 | |
| 246 | /** |
| 247 | * @see org.eclipse.pde.api.tools.internal.AbstractApiTypeContainer#getPackageNames() |
| 248 | */ |
| 249 | public String[] getPackageNames() throws CoreException { |
| 250 | init(); |
| 251 | synchronized (this) { |
| 252 | if (fPackageNames == null) { |
| 253 | Set names = fPackages.keySet(); |
| 254 | String[] result = new String[names.size()]; |
| 255 | names.toArray(result); |
| 256 | Arrays.sort(result); |
| 257 | fPackageNames = result; |
| 258 | } |
| 259 | return fPackageNames; |
| 260 | } |
| 261 | } |
| 262 | |
| 263 | /** |
| 264 | * Initializes cache of packages and types. |
| 265 | * |
| 266 | * @throws CoreException |
| 267 | */ |
| 268 | private synchronized void init() throws CoreException { |
| 269 | ZipFile zipFile = open(); |
| 270 | if (fPackages == null) { |
| 271 | fPackages = new HashMap(); |
| 272 | Enumeration entries = zipFile.entries(); |
| 273 | while (entries.hasMoreElements()) { |
| 274 | ZipEntry entry = (ZipEntry) entries.nextElement(); |
| 275 | String name = entry.getName(); |
| 276 | String pkg = Util.DEFAULT_PACKAGE_NAME; |
| 277 | int index = name.lastIndexOf('/'); |
| 278 | if (index >= 0) { |
| 279 | pkg = name.substring(0, index).replace('/', '.'); |
| 280 | } |
| 281 | Set fileNames = (Set) fPackages.get(pkg); |
| 282 | if (fileNames == null) { |
| 283 | fileNames = new HashSet(); |
| 284 | fPackages.put(pkg, fileNames); |
| 285 | } |
| 286 | fileNames.add(name); |
| 287 | } |
| 288 | } |
| 289 | } |
| 290 | |
| 291 | /** |
| 292 | * Returns an open zip file for this archive. |
| 293 | * |
| 294 | * @return zip file |
| 295 | * @throws IOException if unable to open the archive |
| 296 | */ |
| 297 | synchronized ZipFile open() throws CoreException { |
| 298 | if (fZipFile == null) { |
| 299 | try { |
| 300 | fZipFile = new ZipFile(fLocation); |
| 301 | } catch (IOException e) { |
| 302 | abort("Failed to open archive: " + fLocation, e); //$NON-NLS-1$ |
| 303 | } |
| 304 | } |
| 305 | return fZipFile; |
| 306 | } |
| 307 | |
| 308 | /* (non-Javadoc) |
| 309 | * @see java.lang.Object#equals(java.lang.Object) |
| 310 | */ |
| 311 | public boolean equals(Object obj) { |
| 312 | if (obj instanceof StubArchiveApiTypeContainer) { |
| 313 | return this.fLocation.equals(((StubArchiveApiTypeContainer) obj).fLocation); |
| 314 | } |
| 315 | return false; |
| 316 | } |
| 317 | /* (non-Javadoc) |
| 318 | * @see java.lang.Object#hashCode() |
| 319 | */ |
| 320 | public int hashCode() { |
| 321 | return this.fLocation.hashCode(); |
| 322 | } |
| 323 | |
| 324 | /** |
| 325 | * @see org.eclipse.pde.api.tools.internal.provisional.IApiTypeContainer#findTypeRoot(java.lang.String, java.lang.String) |
| 326 | */ |
| 327 | public IApiTypeRoot findTypeRoot(String qualifiedName, String id) throws CoreException { |
| 328 | return findTypeRoot(qualifiedName); |
| 329 | } |
| 330 | |
| 331 | /* (non-Javadoc) |
| 332 | * @see org.eclipse.pde.api.tools.internal.provisional.model.IApiTypeContainer#getContainerType() |
| 333 | */ |
| 334 | public int getContainerType() { |
| 335 | return ARCHIVE; |
| 336 | } |
| 337 | } |