Ant example source code file (Manifest.java)
The Manifest.java source code/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.apache.tools.ant.taskdefs;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.io.Reader;
import java.io.StringWriter;
import java.io.UnsupportedEncodingException;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Vector;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.util.FileUtils;
/**
* Holds the data of a jar manifest.
*
* Manifests are processed according to the
* {@link <a href="http://java.sun.com/j2se/1.5.0/docs/guide/jar/jar.html">Jar
* file specification.</a>}.
* Specifically, a manifest element consists of
* a set of attributes and sections. These sections in turn may contain
* attributes. Note in particular that this may result in manifest lines
* greater than 72 bytes being wrapped and continued on the next
* line. If an application can not handle the continuation mechanism, it
* is a defect in the application, not this task.
*
*
* @since Ant 1.4
*/
public class Manifest {
/** The standard manifest version header */
public static final String ATTRIBUTE_MANIFEST_VERSION
= "Manifest-Version";
/** The standard Signature Version header */
public static final String ATTRIBUTE_SIGNATURE_VERSION
= "Signature-Version";
/** The Name Attribute is the first in a named section */
public static final String ATTRIBUTE_NAME = "Name";
/** The From Header is disallowed in a Manifest */
public static final String ATTRIBUTE_FROM = "From";
/** The Class-Path Header is special - it can be duplicated */
public static final String ATTRIBUTE_CLASSPATH = "Class-Path";
/** Default Manifest version if one is not specified */
public static final String DEFAULT_MANIFEST_VERSION = "1.0";
/** The max length of a line in a Manifest */
public static final int MAX_LINE_LENGTH = 72;
/**
* Max length of a line section which is continued. Need to allow
* for the CRLF.
*/
public static final int MAX_SECTION_LENGTH = MAX_LINE_LENGTH - 2;
/** The End-Of-Line marker in manifests */
public static final String EOL = "\r\n";
/** Error for attributes */
public static final String ERROR_FROM_FORBIDDEN = "Manifest attributes should not start "
+ "with \"" + ATTRIBUTE_FROM + "\" in \"";
/** Encoding to be used for JAR files. */
public static final String JAR_ENCODING = "UTF-8";
/**
* An attribute for the manifest.
* Those attributes that are not nested into a section will be added to the "Main" section.
*/
public static class Attribute {
/**
* Maximum length of the name to have the value starting on the same
* line as the name. This to stay under 72 bytes total line length
* (including CRLF).
*/
private static final int MAX_NAME_VALUE_LENGTH = 68;
/**
* Maximum length of the name according to the jar specification.
* In this case the first line will have 74 bytes total line length
* (including CRLF). This conflicts with the 72 bytes total line length
* max, but is the only possible conclusion from the manifest specification, if
* names with 70 bytes length are allowed, have to be on the first line, and
* have to be followed by ": ".
*/
private static final int MAX_NAME_LENGTH = 70;
/** The attribute's name */
private String name = null;
/** The attribute's value */
private Vector values = new Vector();
/**
* For multivalued attributes, this is the index of the attribute
* currently being defined.
*/
private int currentIndex = 0;
/**
* Construct an empty attribute */
public Attribute() {
}
/**
* Construct an attribute by parsing a line from the Manifest
*
* @param line the line containing the attribute name and value
*
* @throws ManifestException if the line is not valid
*/
public Attribute(String line) throws ManifestException {
parse(line);
}
/**
* Construct a manifest by specifying its name and value
*
* @param name the attribute's name
* @param value the Attribute's value
*/
public Attribute(String name, String value) {
this.name = name;
setValue(value);
}
/**
* @see java.lang.Object#hashCode
* @return a hashcode based on the key and values.
*/
public int hashCode() {
int hashCode = 0;
if (name != null) {
hashCode += getKey().hashCode();
}
hashCode += values.hashCode();
return hashCode;
}
/**
* @param rhs the object to check for equality.
* @see java.lang.Object#equals
* @return true if the key and values are the same.
*/
public boolean equals(Object rhs) {
if (rhs == null || rhs.getClass() != getClass()) {
return false;
}
if (rhs == this) {
return true;
}
Attribute rhsAttribute = (Attribute) rhs;
String lhsKey = getKey();
String rhsKey = rhsAttribute.getKey();
if ((lhsKey == null && rhsKey != null)
|| (lhsKey != null && rhsKey == null)
|| !lhsKey.equals(rhsKey)) {
return false;
}
return values.equals(rhsAttribute.values);
}
/**
* Parse a line into name and value pairs
*
* @param line the line to be parsed
*
* @throws ManifestException if the line does not contain a colon
* separating the name and value
*/
public void parse(String line) throws ManifestException {
int index = line.indexOf(": ");
if (index == -1) {
throw new ManifestException("Manifest line \"" + line
+ "\" is not valid as it does not "
+ "contain a name and a value separated by ': ' ");
}
name = line.substring(0, index);
setValue(line.substring(index + 2));
}
/**
* Set the Attribute's name; required
*
* @param name the attribute's name
*/
public void setName(String name) {
this.name = name;
}
/**
* Get the Attribute's name
*
* @return the attribute's name.
*/
public String getName() {
return name;
}
/**
* Get the attribute's Key - its name in lower case.
*
* @return the attribute's key.
*/
public String getKey() {
if (name == null) {
return null;
}
return name.toLowerCase();
}
/**
* Set the Attribute's value; required
*
* @param value the attribute's value
*/
public void setValue(String value) {
if (currentIndex >= values.size()) {
values.addElement(value);
currentIndex = values.size() - 1;
} else {
values.setElementAt(value, currentIndex);
}
}
/**
* Get the Attribute's value.
*
* @return the attribute's value.
*/
public String getValue() {
if (values.size() == 0) {
return null;
}
String fullValue = "";
for (Enumeration e = getValues(); e.hasMoreElements();) {
String value = (String) e.nextElement();
fullValue += value + " ";
}
return fullValue.trim();
}
/**
* Add a new value to this attribute - making it multivalued.
*
* @param value the attribute's additional value
*/
public void addValue(String value) {
currentIndex++;
setValue(value);
}
/**
* Get all the attribute's values.
*
* @return an enumeration of the attributes values
*/
public Enumeration getValues() {
return values.elements();
}
/**
* Add a continuation line from the Manifest file.
*
* When lines are too long in a manifest, they are continued on the
* next line by starting with a space. This method adds the continuation
* data to the attribute value by skipping the first character.
*
* @param line the continuation line.
*/
public void addContinuation(String line) {
String currentValue = (String) values.elementAt(currentIndex);
setValue(currentValue + line.substring(1));
}
/**
* Write the attribute out to a print writer.
*
* @param writer the Writer to which the attribute is written
*
* @throws IOException if the attribute value cannot be written
*/
public void write(PrintWriter writer) throws IOException {
for (Enumeration e = getValues(); e.hasMoreElements();) {
writeValue(writer, (String) e.nextElement());
}
}
/**
* Write a single attribute value out
*
* @param writer the Writer to which the attribute is written
* @param value the attribute value
*
* @throws IOException if the attribute value cannot be written
*/
private void writeValue(PrintWriter writer, String value)
throws IOException {
String line = null;
int nameLength = name.getBytes(JAR_ENCODING).length;
if (nameLength > MAX_NAME_VALUE_LENGTH) {
if (nameLength > MAX_NAME_LENGTH) {
throw new IOException("Unable to write manifest line "
+ name + ": " + value);
}
writer.print(name + ": " + EOL);
line = " " + value;
} else {
line = name + ": " + value;
}
while (line.getBytes(JAR_ENCODING).length > MAX_SECTION_LENGTH) {
// try to find a MAX_LINE_LENGTH byte section
int breakIndex = MAX_SECTION_LENGTH;
if (breakIndex >= line.length()) {
breakIndex = line.length() - 1;
}
String section = line.substring(0, breakIndex);
while (section.getBytes(JAR_ENCODING).length > MAX_SECTION_LENGTH
&& breakIndex > 0) {
breakIndex--;
section = line.substring(0, breakIndex);
}
if (breakIndex == 0) {
throw new IOException("Unable to write manifest line "
+ name + ": " + value);
}
writer.print(section + EOL);
line = " " + line.substring(breakIndex);
}
writer.print(line + EOL);
}
}
/**
* A manifest section - you can nest attribute elements into sections.
* A section consists of a set of attribute values,
* separated from other sections by a blank line.
*/
public static class Section {
/** Warnings for this section */
private Vector warnings = new Vector();
/**
* The section's name if any. The main section in a
* manifest is unnamed.
*/
private String name = null;
/** The section's attributes.*/
private Hashtable attributes = new Hashtable();
/** Index used to retain the attribute ordering */
private Vector attributeIndex = new Vector();
/**
* The name of the section; optional -default is the main section.
* @param name the section's name
*/
public void setName(String name) {
this.name = name;
}
/**
* Get the Section's name.
*
* @return the section's name.
*/
public String getName() {
return name;
}
/**
* Read a section through a reader.
*
* @param reader the reader from which the section is read
*
* @return the name of the next section if it has been read as
* part of this section - This only happens if the
* Manifest is malformed.
*
* @throws ManifestException if the section is not valid according
* to the JAR spec
* @throws IOException if the section cannot be read from the reader.
*/
public String read(BufferedReader reader)
throws ManifestException, IOException {
Attribute attribute = null;
while (true) {
String line = reader.readLine();
if (line == null || line.length() == 0) {
return null;
}
if (line.charAt(0) == ' ') {
// continuation line
if (attribute == null) {
if (name != null) {
// a continuation on the first line is a
// continuation of the name - concatenate this
// line and the name
name += line.substring(1);
} else {
throw new ManifestException("Can't start an "
+ "attribute with a continuation line " + line);
}
} else {
attribute.addContinuation(line);
}
} else {
attribute = new Attribute(line);
String nameReadAhead = addAttributeAndCheck(attribute);
// refresh attribute in case of multivalued attributes.
attribute = getAttribute(attribute.getKey());
if (nameReadAhead != null) {
return nameReadAhead;
}
}
}
}
/**
* Merge in another section
*
* @param section the section to be merged with this one.
*
* @throws ManifestException if the sections cannot be merged.
*/
public void merge(Section section) throws ManifestException {
if (name == null && section.getName() != null
|| name != null
&& !(name.equalsIgnoreCase(section.getName()))) {
throw new ManifestException("Unable to merge sections "
+ "with different names");
}
Enumeration e = section.getAttributeKeys();
Attribute classpathAttribute = null;
while (e.hasMoreElements()) {
String attributeName = (String) e.nextElement();
Attribute attribute = section.getAttribute(attributeName);
if (attributeName.equalsIgnoreCase(ATTRIBUTE_CLASSPATH)) {
if (classpathAttribute == null) {
classpathAttribute = new Attribute();
classpathAttribute.setName(ATTRIBUTE_CLASSPATH);
}
Enumeration cpe = attribute.getValues();
while (cpe.hasMoreElements()) {
String value = (String) cpe.nextElement();
classpathAttribute.addValue(value);
}
} else {
// the merge file always wins
storeAttribute(attribute);
}
}
if (classpathAttribute != null) {
// the merge file *always* wins, even for Class-Path
storeAttribute(classpathAttribute);
}
// add in the warnings
Enumeration warnEnum = section.warnings.elements();
while (warnEnum.hasMoreElements()) {
warnings.addElement(warnEnum.nextElement());
}
}
/**
* Write the section out to a print writer.
*
* @param writer the Writer to which the section is written
*
* @throws IOException if the section cannot be written
*/
public void write(PrintWriter writer) throws IOException {
if (name != null) {
Attribute nameAttr = new Attribute(ATTRIBUTE_NAME, name);
nameAttr.write(writer);
}
Enumeration e = getAttributeKeys();
while (e.hasMoreElements()) {
String key = (String) e.nextElement();
Attribute attribute = getAttribute(key);
attribute.write(writer);
}
writer.print(EOL);
}
/**
* Get a attribute of the section
*
* @param attributeName the name of the attribute
* @return a Manifest.Attribute instance if the attribute is
* single-valued, otherwise a Vector of Manifest.Attribute
* instances.
*/
public Attribute getAttribute(String attributeName) {
return (Attribute) attributes.get(attributeName.toLowerCase());
}
/**
* Get the attribute keys.
*
* @return an Enumeration of Strings, each string being the lower case
* key of an attribute of the section.
*/
public Enumeration getAttributeKeys() {
return attributeIndex.elements();
}
/**
* Get the value of the attribute with the name given.
*
* @param attributeName the name of the attribute to be returned.
*
* @return the attribute's value or null if the attribute does not exist
* in the section
*/
public String getAttributeValue(String attributeName) {
Attribute attribute = getAttribute(attributeName.toLowerCase());
if (attribute == null) {
return null;
}
return attribute.getValue();
}
/**
* Remove the given attribute from the section
*
* @param attributeName the name of the attribute to be removed.
*/
public void removeAttribute(String attributeName) {
String key = attributeName.toLowerCase();
attributes.remove(key);
attributeIndex.removeElement(key);
}
/**
* Add an attribute to the section.
*
* @param attribute the attribute to be added to the section
*
* @exception ManifestException if the attribute is not valid.
*/
public void addConfiguredAttribute(Attribute attribute)
throws ManifestException {
String check = addAttributeAndCheck(attribute);
if (check != null) {
throw new BuildException("Specify the section name using "
+ "the \"name\" attribute of the <section> element rather "
+ "than using a \"Name\" manifest attribute");
}
}
/**
* Add an attribute to the section
*
* @param attribute the attribute to be added.
*
* @return the value of the attribute if it is a name
* attribute - null other wise
*
* @exception ManifestException if the attribute already
* exists in this section.
*/
public String addAttributeAndCheck(Attribute attribute)
throws ManifestException {
if (attribute.getName() == null || attribute.getValue() == null) {
throw new BuildException("Attributes must have name and value");
}
if (attribute.getKey().equalsIgnoreCase(ATTRIBUTE_NAME)) {
warnings.addElement("\"" + ATTRIBUTE_NAME + "\" attributes "
+ "should not occur in the main section and must be the "
+ "first element in all other sections: \""
+ attribute.getName() + ": " + attribute.getValue() + "\"");
return attribute.getValue();
}
if (attribute.getKey().startsWith(ATTRIBUTE_FROM.toLowerCase())) {
warnings.addElement(ERROR_FROM_FORBIDDEN
+ attribute.getName() + ": " + attribute.getValue() + "\"");
} else {
// classpath attributes go into a vector
String attributeKey = attribute.getKey();
if (attributeKey.equalsIgnoreCase(ATTRIBUTE_CLASSPATH)) {
Attribute classpathAttribute =
(Attribute) attributes.get(attributeKey);
if (classpathAttribute == null) {
storeAttribute(attribute);
} else {
warnings.addElement("Multiple Class-Path attributes "
+ "are supported but violate the Jar "
+ "specification and may not be correctly "
+ "processed in all environments");
Enumeration e = attribute.getValues();
while (e.hasMoreElements()) {
String value = (String) e.nextElement();
classpathAttribute.addValue(value);
}
}
} else if (attributes.containsKey(attributeKey)) {
throw new ManifestException("The attribute \""
+ attribute.getName() + "\" may not occur more "
+ "than once in the same section");
} else {
storeAttribute(attribute);
}
}
return null;
}
/**
* Clone this section
*
* @return the cloned Section
* @since Ant 1.5.2
*/
public Object clone() {
Section cloned = new Section();
cloned.setName(name);
Enumeration e = getAttributeKeys();
while (e.hasMoreElements()) {
String key = (String) e.nextElement();
Attribute attribute = getAttribute(key);
cloned.storeAttribute(new Attribute(attribute.getName(),
attribute.getValue()));
}
return cloned;
}
/**
* Store an attribute and update the index.
*
* @param attribute the attribute to be stored
*/
private void storeAttribute(Attribute attribute) {
if (attribute == null) {
return;
}
String attributeKey = attribute.getKey();
attributes.put(attributeKey, attribute);
if (!attributeIndex.contains(attributeKey)) {
attributeIndex.addElement(attributeKey);
}
}
/**
* Get the warnings for this section.
*
* @return an Enumeration of warning strings.
*/
public Enumeration getWarnings() {
return warnings.elements();
}
/**
* @see java.lang.Object#hashCode
* @return a hash value based on the attributes.
*/
public int hashCode() {
return attributes.hashCode();
}
/**
* @see java.lang.Object#equals
* @param rhs the object to check for equality.
* @return true if the attributes are the same.
*/
public boolean equals(Object rhs) {
if (rhs == null || rhs.getClass() != getClass()) {
return false;
}
if (rhs == this) {
return true;
}
Section rhsSection = (Section) rhs;
return attributes.equals(rhsSection.attributes);
}
}
/** The version of this manifest */
private String manifestVersion = DEFAULT_MANIFEST_VERSION;
/** The main section of this manifest */
private Section mainSection = new Section();
/** The named sections of this manifest */
private Hashtable sections = new Hashtable();
/** Index of sections - used to retain order of sections in manifest */
private Vector sectionIndex = new Vector();
/**
* Construct a manifest from Ant's default manifest file.
*
* @return the default manifest.
* @exception BuildException if there is a problem loading the
* default manifest
*/
public static Manifest getDefaultManifest() throws BuildException {
InputStream in = null;
InputStreamReader insr = null;
try {
String defManifest = "/org/apache/tools/ant/defaultManifest.mf";
in = Manifest.class.getResourceAsStream(defManifest);
if (in == null) {
throw new BuildException("Could not find default manifest: "
+ defManifest);
}
try {
insr = new InputStreamReader(in, "UTF-8");
Manifest defaultManifest = new Manifest(insr);
Attribute createdBy = new Attribute("Created-By",
System.getProperty("java.vm.version") + " ("
+ System.getProperty("java.vm.vendor") + ")");
defaultManifest.getMainSection().storeAttribute(createdBy);
return defaultManifest;
} catch (UnsupportedEncodingException e) {
insr = new InputStreamReader(in);
return new Manifest(insr);
}
} catch (ManifestException e) {
throw new BuildException("Default manifest is invalid !!", e);
} catch (IOException e) {
throw new BuildException("Unable to read default manifest", e);
} finally {
FileUtils.close(insr);
FileUtils.close(in);
}
}
/** Construct an empty manifest */
public Manifest() {
manifestVersion = null;
}
/**
* Read a manifest file from the given reader
*
* @param r is the reader from which the Manifest is read
*
* @throws ManifestException if the manifest is not valid according
* to the JAR spec
* @throws IOException if the manifest cannot be read from the reader.
*/
public Manifest(Reader r) throws ManifestException, IOException {
BufferedReader reader = new BufferedReader(r);
// This should be the manifest version
String nextSectionName = mainSection.read(reader);
String readManifestVersion
= mainSection.getAttributeValue(ATTRIBUTE_MANIFEST_VERSION);
if (readManifestVersion != null) {
manifestVersion = readManifestVersion;
mainSection.removeAttribute(ATTRIBUTE_MANIFEST_VERSION);
}
String line = null;
while ((line = reader.readLine()) != null) {
if (line.length() == 0) {
continue;
}
Section section = new Section();
if (nextSectionName == null) {
Attribute sectionName = new Attribute(line);
if (!sectionName.getName().equalsIgnoreCase(ATTRIBUTE_NAME)) {
throw new ManifestException("Manifest sections should "
+ "start with a \"" + ATTRIBUTE_NAME
+ "\" attribute and not \""
+ sectionName.getName() + "\"");
}
nextSectionName = sectionName.getValue();
} else {
// we have already started reading this section
// this line is the first attribute. set it and then
// let the normal read handle the rest
Attribute firstAttribute = new Attribute(line);
section.addAttributeAndCheck(firstAttribute);
}
section.setName(nextSectionName);
nextSectionName = section.read(reader);
addConfiguredSection(section);
}
}
/**
* Add a section to the manifest
*
* @param section the manifest section to be added
*
* @exception ManifestException if the secti0on is not valid.
*/
public void addConfiguredSection(Section section)
throws ManifestException {
String sectionName = section.getName();
if (sectionName == null) {
throw new BuildException("Sections must have a name");
}
sections.put(sectionName, section);
if (!sectionIndex.contains(sectionName)) {
sectionIndex.addElement(sectionName);
}
}
/**
* Add an attribute to the manifest - it is added to the main section.
*
* @param attribute the attribute to be added.
*
* @exception ManifestException if the attribute is not valid.
*/
public void addConfiguredAttribute(Attribute attribute)
throws ManifestException {
if (attribute.getKey() == null || attribute.getValue() == null) {
throw new BuildException("Attributes must have name and value");
}
if (attribute.getKey().equalsIgnoreCase(ATTRIBUTE_MANIFEST_VERSION)) {
manifestVersion = attribute.getValue();
} else {
mainSection.addConfiguredAttribute(attribute);
}
}
/**
* Merge the contents of the given manifest into this manifest
*
* @param other the Manifest to be merged with this one.
*
* @throws ManifestException if there is a problem merging the
* manifest according to the Manifest spec.
*/
public void merge(Manifest other) throws ManifestException {
merge(other, false);
}
/**
* Merge the contents of the given manifest into this manifest
*
* @param other the Manifest to be merged with this one.
* @param overwriteMain whether to overwrite the main section
* of the current manifest
*
* @throws ManifestException if there is a problem merging the
* manifest according to the Manifest spec.
*/
public void merge(Manifest other, boolean overwriteMain)
throws ManifestException {
if (other != null) {
if (overwriteMain) {
mainSection = (Section) other.mainSection.clone();
} else {
mainSection.merge(other.mainSection);
}
if (other.manifestVersion != null) {
manifestVersion = other.manifestVersion;
}
Enumeration e = other.getSectionNames();
while (e.hasMoreElements()) {
String sectionName = (String) e.nextElement();
Section ourSection = (Section) sections.get(sectionName);
Section otherSection
= (Section) other.sections.get(sectionName);
if (ourSection == null) {
if (otherSection != null) {
addConfiguredSection((Section) otherSection.clone());
}
} else {
ourSection.merge(otherSection);
}
}
}
}
/**
* Write the manifest out to a print writer.
*
* @param writer the Writer to which the manifest is written
*
* @throws IOException if the manifest cannot be written
*/
public void write(PrintWriter writer) throws IOException {
writer.print(ATTRIBUTE_MANIFEST_VERSION + ": " + manifestVersion + EOL);
String signatureVersion
= mainSection.getAttributeValue(ATTRIBUTE_SIGNATURE_VERSION);
if (signatureVersion != null) {
writer.print(ATTRIBUTE_SIGNATURE_VERSION + ": "
+ signatureVersion + EOL);
mainSection.removeAttribute(ATTRIBUTE_SIGNATURE_VERSION);
}
mainSection.write(writer);
// add it back
if (signatureVersion != null) {
try {
Attribute svAttr = new Attribute(ATTRIBUTE_SIGNATURE_VERSION,
signatureVersion);
mainSection.addConfiguredAttribute(svAttr);
} catch (ManifestException e) {
// shouldn't happen - ignore
}
}
Enumeration e = sectionIndex.elements();
while (e.hasMoreElements()) {
String sectionName = (String) e.nextElement();
Section section = getSection(sectionName);
section.write(writer);
}
}
/**
* Convert the manifest to its string representation
*
* @return a multiline string with the Manifest as it
* appears in a Manifest file.
*/
public String toString() {
StringWriter sw = new StringWriter();
try {
write(new PrintWriter(sw));
} catch (IOException e) {
return null;
}
return sw.toString();
}
/**
* Get the warnings for this manifest.
*
* @return an enumeration of warning strings
*/
public Enumeration getWarnings() {
Vector warnings = new Vector();
Enumeration warnEnum = mainSection.getWarnings();
while (warnEnum.hasMoreElements()) {
warnings.addElement(warnEnum.nextElement());
}
// create a vector and add in the warnings for all the sections
Enumeration e = sections.elements();
while (e.hasMoreElements()) {
Section section = (Section) e.nextElement();
Enumeration e2 = section.getWarnings();
while (e2.hasMoreElements()) {
warnings.addElement(e2.nextElement());
}
}
return warnings.elements();
}
/**
* @see java.lang.Object#hashCode
* @return a hashcode based on the version, main and sections.
*/
public int hashCode() {
int hashCode = 0;
if (manifestVersion != null) {
hashCode += manifestVersion.hashCode();
}
hashCode += mainSection.hashCode();
hashCode += sections.hashCode();
return hashCode;
}
/**
* @see java.lang.Object#equals
* @param rhs the object to check for equality.
* @return true if the version, main and sections are the same.
*/
public boolean equals(Object rhs) {
if (rhs == null || rhs.getClass() != getClass()) {
return false;
}
if (rhs == this) {
return true;
}
Manifest rhsManifest = (Manifest) rhs;
if (manifestVersion == null) {
if (rhsManifest.manifestVersion != null) {
return false;
}
} else if (!manifestVersion.equals(rhsManifest.manifestVersion)) {
return false;
}
if (!mainSection.equals(rhsManifest.mainSection)) {
return false;
}
return sections.equals(rhsManifest.sections);
}
/**
* Get the version of the manifest
*
* @return the manifest's version string
*/
public String getManifestVersion() {
return manifestVersion;
}
/**
* Get the main section of the manifest
*
* @return the main section of the manifest
*/
public Section getMainSection() {
return mainSection;
}
/**
* Get a particular section from the manifest
*
* @param name the name of the section desired.
* @return the specified section or null if that section
* does not exist in the manifest
*/
public Section getSection(String name) {
return (Section) sections.get(name);
}
/**
* Get the section names in this manifest.
*
* @return an Enumeration of section names
*/
public Enumeration getSectionNames() {
return sectionIndex.elements();
}
}
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