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[tor-commits] [metrics-lib/master] Support parsing of .xz-compressed tarballs.



commit 09d94636ef6150871c9340f695a7c90a74ee5cb4
Author: Karsten Loesing <karsten.loesing@xxxxxxx>
Date:   Thu Dec 10 18:17:23 2015 +0100

    Support parsing of .xz-compressed tarballs.
    
    Implements #16424.
---
 CHANGELOG.md                                              |   13 ++++++++-----
 CONTRIB.md                                                |    4 ++++
 build.xml                                                 |    1 +
 .../torproject/descriptor/impl/DescriptorReaderImpl.java  |   10 ++++++++--
 4 files changed, 21 insertions(+), 7 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index d9eba21..03c2940 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,14 +1,17 @@
 # Changes in version 1.x.x - 201x-xx-xx
 
  * Medium changes
-    - Parse flag thresholds in bridge network statuses, and parse the
-      "ignoring-advertised-bws" flag threshold in relay network status
-      votes.
+   - Parse flag thresholds in bridge network statuses, and parse the
+     "ignoring-advertised-bws" flag threshold in relay network status
+     votes.
+   - Support parsing of .xz-compressed tarballs using Apache Commons
+     Compress and XZ for Java.  Applications only need to add XZ for
+     Java as dependency if they want to parse .xz-compressed tarballs.
 
 
 # Changes in version 1.0.0 - 2015-12-05
 
  * Major changes
-   - This is the initial release after four years of development.  Happy
-     4th birthday!
+   - This is the initial release after four years of development.
+     Happy 4th birthday!
 
diff --git a/CONTRIB.md b/CONTRIB.md
index 62c7cf8..eeb6f48 100644
--- a/CONTRIB.md
+++ b/CONTRIB.md
@@ -55,6 +55,10 @@ metrics-lib currently has the following dependencies to compile:
    Download, Archives, Binaries, and then the tarball or zip file for
    version 1.4.1.)
 
+ - XZ for Java 1.0 (the project page at http://tukaani.org/xz/java.html
+   contains the most recent version, but older versions need to be
+   retrieved from http://mvnrepository.com/artifact/org.tukaani/xz.)
+
  - JUnit 4.10 and Hamcrest 1.2 (go to the JUnit project page at
    http://junit.org/ and select Download and install, junit.jar, version
    4.10, and hamcrest-core.jar, version 1.2.)
diff --git a/build.xml b/build.xml
index 8f1aaec..a6e0ac0 100644
--- a/build.xml
+++ b/build.xml
@@ -18,6 +18,7 @@
       <include name="commons-compress-1.4.1.jar"/>
       <include name="junit4-4.10.jar"/>
       <include name="hamcrest-core-1.2.jar"/>
+      <include name="xz-1.0.jar"/>
     </fileset>
   </path>
 
diff --git a/src/org/torproject/descriptor/impl/DescriptorReaderImpl.java b/src/org/torproject/descriptor/impl/DescriptorReaderImpl.java
index 8809d7e..e47c2a7 100644
--- a/src/org/torproject/descriptor/impl/DescriptorReaderImpl.java
+++ b/src/org/torproject/descriptor/impl/DescriptorReaderImpl.java
@@ -24,6 +24,7 @@ import java.util.TreeMap;
 import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
 import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
 import org.apache.commons.compress.compressors.bzip2.BZip2CompressorInputStream;
+import org.apache.commons.compress.compressors.xz.XZCompressorInputStream;
 import org.torproject.descriptor.Descriptor;
 import org.torproject.descriptor.DescriptorFile;
 import org.torproject.descriptor.DescriptorParser;
@@ -231,7 +232,8 @@ public class DescriptorReaderImpl implements DescriptorReader {
           if (file.isDirectory()) {
             files.addAll(Arrays.asList(file.listFiles()));
           } else if (file.getName().endsWith(".tar") ||
-              file.getName().endsWith(".tar.bz2")) {
+              file.getName().endsWith(".tar.bz2") ||
+              file.getName().endsWith(".tar.xz")) {
             this.tarballs.add(file);
           } else {
             String absolutePath = file.getAbsolutePath();
@@ -268,7 +270,8 @@ public class DescriptorReaderImpl implements DescriptorReader {
       while (!abortReading && !files.isEmpty()) {
         File tarball = files.remove(0);
         if (!tarball.getName().endsWith(".tar") &&
-            !tarball.getName().endsWith(".tar.bz2")) {
+            !tarball.getName().endsWith(".tar.bz2") &&
+            !tarball.getName().endsWith(".tar.xz")) {
           continue;
         }
         String absolutePath = tarball.getAbsolutePath();
@@ -287,6 +290,9 @@ public class DescriptorReaderImpl implements DescriptorReader {
             if (tarball.getName().endsWith(".tar.bz2")) {
               tais = new TarArchiveInputStream(
                   new BZip2CompressorInputStream(in));
+            } else if (tarball.getName().endsWith(".tar.xz")) {
+              tais = new TarArchiveInputStream(
+                  new XZCompressorInputStream(in));
             } else if (tarball.getName().endsWith(".tar")) {
               tais = new TarArchiveInputStream(in);
             }

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