import org.apache.poi.openxml4j.util.ZipSecureFile;
public final class ZipHelper {
-
- /**
- * Forward slash use to convert part name between OPC and zip item naming
- * conventions.
- */
- private final static String FORWARD_SLASH = "/";
-
- /**
- * Buffer to read data from file. Use big buffer to improve performaces. the
- * InputStream class is reading only 8192 bytes per read call (default value
- * set by sun)
- */
- public static final int READ_WRITE_FILE_BUFFER_SIZE = 8192;
-
- /**
- * Prevent this class to be instancied.
- */
- private ZipHelper() {
- // Do nothing
- }
-
- /**
- * Retrieve the zip entry of the core properties part.
- *
- * @throws OpenXML4JException
- * Throws if internal error occurs.
- */
- public static ZipEntry getCorePropertiesZipEntry(ZipPackage pkg) {
- PackageRelationship corePropsRel = pkg.getRelationshipsByType(
- PackageRelationshipTypes.CORE_PROPERTIES).getRelationship(0);
-
- if (corePropsRel == null)
- return null;
-
- return new ZipEntry(corePropsRel.getTargetURI().getPath());
- }
-
- /**
- * Retrieve the Zip entry of the content types part.
- */
- public static ZipEntry getContentTypeZipEntry(ZipPackage pkg) {
- Enumeration<? extends ZipEntry> entries = pkg.getZipArchive().getEntries();
-
- // Enumerate through the Zip entries until we find the one named
- // '[Content_Types].xml'.
- while (entries.hasMoreElements()) {
- ZipEntry entry = entries.nextElement();
- if (entry.getName().equals(
- ContentTypeManager.CONTENT_TYPES_PART_NAME))
- return entry;
- }
- return null;
- }
-
- /**
- * Convert a zip name into an OPC name by adding a leading forward slash to
- * the specified item name.
- *
- * @param zipItemName
- * Zip item name to convert.
- * @return An OPC compliant name.
- */
- public static String getOPCNameFromZipItemName(String zipItemName) {
- if (zipItemName == null)
- throw new IllegalArgumentException("zipItemName");
- if (zipItemName.startsWith(FORWARD_SLASH)) {
- return zipItemName;
- }
- return FORWARD_SLASH + zipItemName;
- }
-
- /**
- * Convert an OPC item name into a zip item name by removing any leading
- * forward slash if it exist.
- *
- * @param opcItemName
- * The OPC item name to convert.
- * @return A zip item name without any leading slashes.
- */
- public static String getZipItemNameFromOPCName(String opcItemName) {
- if (opcItemName == null)
- throw new IllegalArgumentException("opcItemName");
-
- String retVal = opcItemName;
- while (retVal.startsWith(FORWARD_SLASH))
- retVal = retVal.substring(1);
- return retVal;
- }
-
- /**
- * Convert an OPC item name into a zip URI by removing any leading forward
- * slash if it exist.
- *
- * @param opcItemName
- * The OPC item name to convert.
- * @return A zip URI without any leading slashes.
- */
- public static URI getZipURIFromOPCName(String opcItemName) {
- if (opcItemName == null)
- throw new IllegalArgumentException("opcItemName");
-
- String retVal = opcItemName;
- while (retVal.startsWith(FORWARD_SLASH))
- retVal = retVal.substring(1);
- try {
- return new URI(retVal);
- } catch (URISyntaxException e) {
- return null;
- }
- }
-
- /**
- * Opens the specified file as a zip, or returns null if no such file exists
- *
- * @param file
- * The file to open.
- * @return The zip archive freshly open.
- */
- public static ZipFile openZipFile(File file) throws IOException {
- if (!file.exists()) {
- return null;
- }
-
- return new ZipSecureFile(file);
- }
-
- /**
- * Retrieve and open a zip file with the specified path.
- *
- * @param path
- * The file path.
- * @return The zip archive freshly open.
- */
- public static ZipFile openZipFile(String path) throws IOException {
- File f = new File(path);
-
- if (!f.exists()) {
- return null;
- }
-
- return new ZipSecureFile(f);
- }
+ /**
+ * Forward slash use to convert part name between OPC and zip item naming
+ * conventions.
+ */
+ private final static String FORWARD_SLASH = "/";
+
+ /**
+ * Buffer to read data from file. Use big buffer to improve performaces. the
+ * InputStream class is reading only 8192 bytes per read call (default value
+ * set by sun)
+ */
+ public static final int READ_WRITE_FILE_BUFFER_SIZE = 8192;
+
+ /**
+ * Prevent this class to be instancied.
+ */
+ private ZipHelper() {
+ // Do nothing
+ }
+
+ /**
+ * Retrieve the zip entry of the core properties part.
+ *
+ * @throws OpenXML4JException
+ * Throws if internal error occurs.
+ */
+ public static ZipEntry getCorePropertiesZipEntry(ZipPackage pkg) {
+ PackageRelationship corePropsRel = pkg.getRelationshipsByType(
+ PackageRelationshipTypes.CORE_PROPERTIES).getRelationship(0);
+
+ if (corePropsRel == null)
+ return null;
+
+ return new ZipEntry(corePropsRel.getTargetURI().getPath());
+ }
+
+ /**
+ * Retrieve the Zip entry of the content types part.
+ */
+ public static ZipEntry getContentTypeZipEntry(ZipPackage pkg) {
+ Enumeration<? extends ZipEntry> entries = pkg.getZipArchive().getEntries();
+
+ // Enumerate through the Zip entries until we find the one named
+ // '[Content_Types].xml'.
+ while (entries.hasMoreElements()) {
+ ZipEntry entry = entries.nextElement();
+ if (entry.getName().equals(
+ ContentTypeManager.CONTENT_TYPES_PART_NAME))
+ return entry;
+ }
+ return null;
+ }
+
+ /**
+ * Convert a zip name into an OPC name by adding a leading forward slash to
+ * the specified item name.
+ *
+ * @param zipItemName
+ * Zip item name to convert.
+ * @return An OPC compliant name.
+ */
+ public static String getOPCNameFromZipItemName(String zipItemName) {
+ if (zipItemName == null)
+ throw new IllegalArgumentException("zipItemName");
+ if (zipItemName.startsWith(FORWARD_SLASH)) {
+ return zipItemName;
+ }
+ return FORWARD_SLASH + zipItemName;
+ }
+
+ /**
+ * Convert an OPC item name into a zip item name by removing any leading
+ * forward slash if it exist.
+ *
+ * @param opcItemName
+ * The OPC item name to convert.
+ * @return A zip item name without any leading slashes.
+ */
+ public static String getZipItemNameFromOPCName(String opcItemName) {
+ if (opcItemName == null)
+ throw new IllegalArgumentException("opcItemName");
+
+ String retVal = opcItemName;
+ while (retVal.startsWith(FORWARD_SLASH))
+ retVal = retVal.substring(1);
+ return retVal;
+ }
+
+ /**
+ * Convert an OPC item name into a zip URI by removing any leading forward
+ * slash if it exist.
+ *
+ * @param opcItemName
+ * The OPC item name to convert.
+ * @return A zip URI without any leading slashes.
+ */
+ public static URI getZipURIFromOPCName(String opcItemName) {
+ if (opcItemName == null)
+ throw new IllegalArgumentException("opcItemName");
+
+ String retVal = opcItemName;
+ while (retVal.startsWith(FORWARD_SLASH))
+ retVal = retVal.substring(1);
+ try {
+ return new URI(retVal);
+ } catch (URISyntaxException e) {
+ return null;
+ }
+ }
+
+ /**
+ * Opens the specified file as a zip, or returns null if no such file exists
+ *
+ * @param file
+ * The file to open.
+ * @return The zip archive freshly open.
+ */
+ public static ZipFile openZipFile(File file) throws IOException {
+ if (!file.exists()) {
+ return null;
+ }
+
+ return new ZipSecureFile(file);
+ }
+
+ /**
+ * Retrieve and open a zip file with the specified path.
+ *
+ * @param path
+ * The file path.
+ * @return The zip archive freshly open.
+ */
+ public static ZipFile openZipFile(String path) throws IOException {
+ File f = new File(path);
+
+ if (!f.exists()) {
+ return null;
+ }
+
+ return new ZipSecureFile(f);
+ }
}
projects / poi.git / commitdiff