Implement proceed from for git

scm-core/src/main/java/sonia/scm/repository/api/BrowseCommandBuilder.java

@@ -315,6 +315,18 @@ public final class BrowseCommandBuilder
     return this;
   }
 
+  /**
+   * Proceed the list from the given number on (zero based).
+   *
+   * @param proceedFrom The number of the entry, the result should start with (zero based).
+   *                    All preceding entries will be omitted.
+   * @since 2.0.0
+   */
+  public BrowseCommandBuilder setProceedFrom(int proceedFrom) {
+    request.setProceedFrom(proceedFrom);
+    return this;
+  }
+
   private void updateCache(BrowserResult updatedResult) {
     if (!disableCache) {
       CacheKey key = new CacheKey(repository, request);

scm-core/src/main/java/sonia/scm/repository/spi/BrowseCommandRequest.java

@@ -52,6 +52,7 @@ public final class BrowseCommandRequest extends FileBaseCommandRequest
   public static final int DEFAULT_REQUEST_LIMIT = 1000;
 
   private static final long serialVersionUID = 7956624623516803183L;
+  private int proceedFrom;
 
   public BrowseCommandRequest() {
     this(null);
@@ -203,6 +204,17 @@ public final class BrowseCommandRequest extends FileBaseCommandRequest
     this.limit = limit;
   }
 
+  /**
+   * Proceed the list from the given number on (zero based).
+   *
+   * @param proceedFrom The number of the entry, the result should start with (zero based).
+   *                    All preceding entries will be omitted.
+   * @since 2.0.0
+   */
+  public void setProceedFrom(int proceedFrom) {
+    this.proceedFrom = proceedFrom;
+  }
+
   //~--- get methods ----------------------------------------------------------
 
   /**
@@ -253,6 +265,15 @@ public final class BrowseCommandRequest extends FileBaseCommandRequest
     return limit;
   }
 
+  /**
+   * The number of the entry, the result start with. All preceding entries will be omitted.
+   *
+   * @since 2.0.0
+   */
+  public int getProceedFrom() {
+    return proceedFrom;
+  }
+
   public void updateCache(BrowserResult update) {
     if (updater != null) {
       updater.accept(update);

scm-plugins/scm-git-plugin/src/main/java/sonia/scm/repository/spi/GitBrowseCommand.java

@@ -253,7 +253,7 @@ public class GitBrowseCommand extends AbstractGitCommand
 
   private FileObject findChildren(FileObject parent, org.eclipse.jgit.lib.Repository repo, BrowseCommandRequest request, ObjectId revId, TreeWalk treeWalk) throws IOException {
     List<FileObject> files = Lists.newArrayList();
-    while (treeWalk.next() && resultCount < request.getLimit())
+    while (treeWalk.next() && resultCount < request.getLimit() + request.getProceedFrom())
     {
 
       FileObject fileObject = createFileObject(repo, request, revId, treeWalk);
@@ -262,7 +262,9 @@ public class GitBrowseCommand extends AbstractGitCommand
         return fileObject;
       }
 
-      files.add(fileObject);
+      if (resultCount >= request.getProceedFrom()) {
+        files.add(fileObject);
+      }
 
       ++resultCount;
 

scm-plugins/scm-git-plugin/src/test/java/sonia/scm/repository/spi/GitBrowseCommandTest.java

@@ -249,6 +249,20 @@ public class GitBrowseCommandTest extends AbstractGitCommandTestBase {
     assertThat(foList).hasSize(2);
   }
 
+  @Test
+  public void testBrowseProceedFrom() throws IOException {
+    BrowseCommandRequest request = new BrowseCommandRequest();
+    request.setLimit(2);
+    request.setProceedFrom(2);
+    FileObject root = createCommand()
+      .getBrowserResult(request).getFile();
+    assertNotNull(root);
+
+    Collection<FileObject> foList = root.getChildren();
+
+    assertThat(foList).extracting("name").contains("c", "f.txt");
+  }
+
   private FileObject findFile(Collection<FileObject> foList, String name) {
     return foList.stream()
       .filter(f -> name.equals(f.getName()))