79
80 /**
81 * Get the set of options for the pack and unpack engines.
82 * @return A sorted association of option key strings to option values.
83 */
84 public SortedMap<String, String> properties() {
85 return props;
86 }
87
88 // Back-pointer to NativeUnpacker, when active.
89 Object _nunp;
90
91
92 public String toString() {
93 return Utils.getVersionString();
94 }
95
96 //Driver routines
97
98 // The unpack worker...
99 /**
100 * Takes a packed-stream InputStream, and writes to a JarOutputStream. Internally
101 * the entire buffer must be read, it may be more efficient to read the packed-stream
102 * to a file and pass the File object, in the alternate method described below.
103 * <p>
104 * Closes its input but not its output. (The output can accumulate more elements.)
105 * @param in an InputStream.
106 * @param out a JarOutputStream.
107 * @exception IOException if an error is encountered.
108 */
109 public synchronized void unpack(InputStream in, JarOutputStream out) throws IOException {
110 if (in == null) {
111 throw new NullPointerException("null input");
112 }
113 if (out == null) {
114 throw new NullPointerException("null output");
115 }
116 assert(Utils.currentInstance.get() == null);
117 TimeZone tz = (props.getBoolean(Utils.PACK_DEFAULT_TIMEZONE))
118 ? null
119 : TimeZone.getDefault();
120
121 try {
122 Utils.currentInstance.set(this);
123 if (tz != null) TimeZone.setDefault(TimeZone.getTimeZone("UTC"));
124 final int verbose = props.getInteger(Utils.DEBUG_VERBOSE);
125 BufferedInputStream in0 = new BufferedInputStream(in);
126 if (Utils.isJarMagic(Utils.readMagic(in0))) {
127 if (verbose > 0)
128 Utils.log.info("Copying unpacked JAR file...");
129 Utils.copyJarFile(new JarInputStream(in0), out);
130 } else if (props.getBoolean(Utils.DEBUG_DISABLE_NATIVE)) {
131 (new DoUnpack()).run(in0, out);
132 in0.close();
133 Utils.markJarFile(out);
134 } else {
135 try {
136 (new NativeUnpack(this)).run(in0, out);
137 } catch (UnsatisfiedLinkError | NoClassDefFoundError ex) {
138 // failover to java implementation
139 (new DoUnpack()).run(in0, out);
140 }
141 in0.close();
142 Utils.markJarFile(out);
143 }
144 } finally {
145 _nunp = null;
146 Utils.currentInstance.set(null);
147 if (tz != null) TimeZone.setDefault(tz);
148 }
149 }
150
151 /**
152 * Takes an input File containing the pack file, and generates a JarOutputStream.
153 * <p>
154 * Does not close its output. (The output can accumulate more elements.)
155 * @param in a File.
156 * @param out a JarOutputStream.
157 * @exception IOException if an error is encountered.
158 */
159 public synchronized void unpack(File in, JarOutputStream out) throws IOException {
160 if (in == null) {
161 throw new NullPointerException("null input");
162 }
163 if (out == null) {
164 throw new NullPointerException("null output");
165 }
166 // Use the stream-based implementation.
167 // %%% Reconsider if native unpacker learns to memory-map the file.
168 try (FileInputStream instr = new FileInputStream(in)) {
169 unpack(instr, out);
170 }
171 if (props.getBoolean(Utils.UNPACK_REMOVE_PACKFILE)) {
172 in.delete();
173 }
174 }
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79
80 /**
81 * Get the set of options for the pack and unpack engines.
82 * @return A sorted association of option key strings to option values.
83 */
84 public SortedMap<String, String> properties() {
85 return props;
86 }
87
88 // Back-pointer to NativeUnpacker, when active.
89 Object _nunp;
90
91
92 public String toString() {
93 return Utils.getVersionString();
94 }
95
96 //Driver routines
97
98 // The unpack worker...
99
100 /**
101 * Takes a packed-stream InputStream, and writes to a JarOutputStream. Internally
102 * the entire buffer must be read, it may be more efficient to read the packed-stream
103 * to a file and pass the File object, in the alternate method described below.
104 * <p>
105 * Closes its input but not its output. (The output can accumulate more elements.)
106 *
107 * @param in an InputStream.
108 * @param out a JarOutputStream.
109 * @exception IOException if an error is encountered.
110 */
111 public synchronized void unpack(InputStream in, JarOutputStream out) throws IOException {
112 if (in == null) {
113 throw new NullPointerException("null input");
114 }
115 if (out == null) {
116 throw new NullPointerException("null output");
117 }
118 assert (Utils.currentInstance.get() == null);
119 boolean needUTC = !props.getBoolean(Utils.PACK_DEFAULT_TIMEZONE);
120 try {
121 Utils.currentInstance.set(this);
122 if (needUTC) {
123 Utils.changeDefaultTimeZoneToUtc();
124 }
125 final int verbose = props.getInteger(Utils.DEBUG_VERBOSE);
126 BufferedInputStream in0 = new BufferedInputStream(in);
127 if (Utils.isJarMagic(Utils.readMagic(in0))) {
128 if (verbose > 0) {
129 Utils.log.info("Copying unpacked JAR file...");
130 }
131 Utils.copyJarFile(new JarInputStream(in0), out);
132 } else if (props.getBoolean(Utils.DEBUG_DISABLE_NATIVE)) {
133 (new DoUnpack()).run(in0, out);
134 in0.close();
135 Utils.markJarFile(out);
136 } else {
137 try {
138 (new NativeUnpack(this)).run(in0, out);
139 } catch (UnsatisfiedLinkError | NoClassDefFoundError ex) {
140 // failover to java implementation
141 (new DoUnpack()).run(in0, out);
142 }
143 in0.close();
144 Utils.markJarFile(out);
145 }
146 } finally {
147 _nunp = null;
148 Utils.currentInstance.set(null);
149 if (needUTC) {
150 Utils.restoreDefaultTimeZone();
151 }
152 }
153 }
154
155 /**
156 * Takes an input File containing the pack file, and generates a JarOutputStream.
157 * <p>
158 * Does not close its output. (The output can accumulate more elements.)
159 *
160 * @param in a File.
161 * @param out a JarOutputStream.
162 * @exception IOException if an error is encountered.
163 */
164 public synchronized void unpack(File in, JarOutputStream out) throws IOException {
165 if (in == null) {
166 throw new NullPointerException("null input");
167 }
168 if (out == null) {
169 throw new NullPointerException("null output");
170 }
171 // Use the stream-based implementation.
172 // %%% Reconsider if native unpacker learns to memory-map the file.
173 try (FileInputStream instr = new FileInputStream(in)) {
174 unpack(instr, out);
175 }
176 if (props.getBoolean(Utils.UNPACK_REMOVE_PACKFILE)) {
177 in.delete();
178 }
179 }
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