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make/src/classes/build/tools/tzdb/TzdbZoneRulesCompiler.java

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  49  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  50  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  51  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  52  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  53  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  54  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  55  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  56  */
  57 package build.tools.tzdb;
  58 
  59 import java.io.ByteArrayOutputStream;
  60 import java.io.DataOutputStream;
  61 import java.nio.charset.StandardCharsets;
  62 import java.nio.file.Files;
  63 import java.nio.file.Path;
  64 import java.nio.file.Paths;
  65 import java.text.ParsePosition;
  66 import java.util.ArrayList;
  67 import java.util.Arrays;
  68 import java.util.HashMap;
  69 import java.util.HashSet;
  70 import java.util.List;
  71 import java.util.Map;
  72 import java.util.NoSuchElementException;
  73 import java.util.Scanner;
  74 import java.util.SortedMap;
  75 import java.util.TreeMap;
  76 import java.util.regex.Matcher;
  77 import java.util.regex.MatchResult;
  78 import java.util.regex.Pattern;
  79 
  80 /**
  81  * A compiler that reads a set of TZDB time-zone files and builds a single
  82  * combined TZDB data file.
  83  *
  84  * @since 1.8
  85  */
  86 public final class TzdbZoneRulesCompiler {
  87 
  88     public static void main(String[] args) {
  89         new TzdbZoneRulesCompiler().compile(args);


 240      * Outputs the file.
 241      */
 242     private void outputFile(Path dstFile, String version,
 243                             SortedMap<String, ZoneRules> builtZones,
 244                             Map<String, String> links) {
 245         try (DataOutputStream out = new DataOutputStream(Files.newOutputStream(dstFile))) {
 246             // file version
 247             out.writeByte(1);
 248             // group
 249             out.writeUTF("TZDB");
 250             // versions
 251             out.writeShort(1);
 252             out.writeUTF(version);
 253             // regions
 254             String[] regionArray = builtZones.keySet().toArray(new String[builtZones.size()]);
 255             out.writeShort(regionArray.length);
 256             for (String regionId : regionArray) {
 257                 out.writeUTF(regionId);
 258             }
 259             // rules  -- hashset -> remove the dup
 260             List<ZoneRules> rulesList = new ArrayList<>(new HashSet<>(builtZones.values()));
 261             out.writeShort(rulesList.size());
 262             ByteArrayOutputStream baos = new ByteArrayOutputStream(1024);
 263             for (ZoneRules rules : rulesList) {
 264                 baos.reset();
 265                 DataOutputStream dataos = new DataOutputStream(baos);
 266                 rules.writeExternal(dataos);
 267                 dataos.close();
 268                 byte[] bytes = baos.toByteArray();
 269                 out.writeShort(bytes.length);
 270                 out.write(bytes);
 271             }
 272             // link version-region-rules
 273             out.writeShort(builtZones.size());
 274             for (Map.Entry<String, ZoneRules> entry : builtZones.entrySet()) {
 275                  int regionIndex = Arrays.binarySearch(regionArray, entry.getKey());
 276                  int rulesIndex = rulesList.indexOf(entry.getValue());
 277                  out.writeShort(regionIndex);
 278                  out.writeShort(rulesIndex);
 279             }
 280             // alias-region




  49  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  50  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  51  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  52  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  53  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  54  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  55  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  56  */
  57 package build.tools.tzdb;
  58 
  59 import java.io.ByteArrayOutputStream;
  60 import java.io.DataOutputStream;
  61 import java.nio.charset.StandardCharsets;
  62 import java.nio.file.Files;
  63 import java.nio.file.Path;
  64 import java.nio.file.Paths;
  65 import java.text.ParsePosition;
  66 import java.util.ArrayList;
  67 import java.util.Arrays;
  68 import java.util.HashMap;
  69 import java.util.LinkedHashSet;
  70 import java.util.List;
  71 import java.util.Map;
  72 import java.util.NoSuchElementException;
  73 import java.util.Scanner;
  74 import java.util.SortedMap;
  75 import java.util.TreeMap;
  76 import java.util.regex.Matcher;
  77 import java.util.regex.MatchResult;
  78 import java.util.regex.Pattern;
  79 
  80 /**
  81  * A compiler that reads a set of TZDB time-zone files and builds a single
  82  * combined TZDB data file.
  83  *
  84  * @since 1.8
  85  */
  86 public final class TzdbZoneRulesCompiler {
  87 
  88     public static void main(String[] args) {
  89         new TzdbZoneRulesCompiler().compile(args);


 240      * Outputs the file.
 241      */
 242     private void outputFile(Path dstFile, String version,
 243                             SortedMap<String, ZoneRules> builtZones,
 244                             Map<String, String> links) {
 245         try (DataOutputStream out = new DataOutputStream(Files.newOutputStream(dstFile))) {
 246             // file version
 247             out.writeByte(1);
 248             // group
 249             out.writeUTF("TZDB");
 250             // versions
 251             out.writeShort(1);
 252             out.writeUTF(version);
 253             // regions
 254             String[] regionArray = builtZones.keySet().toArray(new String[builtZones.size()]);
 255             out.writeShort(regionArray.length);
 256             for (String regionId : regionArray) {
 257                 out.writeUTF(regionId);
 258             }
 259             // rules  -- hashset -> remove the dup
 260             List<ZoneRules> rulesList = new ArrayList<>(new LinkedHashSet<>(builtZones.values()));
 261             out.writeShort(rulesList.size());
 262             ByteArrayOutputStream baos = new ByteArrayOutputStream(1024);
 263             for (ZoneRules rules : rulesList) {
 264                 baos.reset();
 265                 DataOutputStream dataos = new DataOutputStream(baos);
 266                 rules.writeExternal(dataos);
 267                 dataos.close();
 268                 byte[] bytes = baos.toByteArray();
 269                 out.writeShort(bytes.length);
 270                 out.write(bytes);
 271             }
 272             // link version-region-rules
 273             out.writeShort(builtZones.size());
 274             for (Map.Entry<String, ZoneRules> entry : builtZones.entrySet()) {
 275                  int regionIndex = Arrays.binarySearch(regionArray, entry.getKey());
 276                  int rulesIndex = rulesList.indexOf(entry.getValue());
 277                  out.writeShort(regionIndex);
 278                  out.writeShort(rulesIndex);
 279             }
 280             // alias-region


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