#27 -- fix read commits

src/main/java/ru/ulstu/extractor/service/GitRepositoryService.java

@@ -107,17 +107,13 @@ public class GitRepositoryService {
         Git git = new Git(localRepo);
 
         List<RevCommit> commits = new ArrayList<>();
-        git.log().call().forEach(commits::add);
+        git.log().setSkip(commitsFrom).setMaxCount(commitsTo - commitsFrom).call().forEach(commits::add);
 
         List<Commit> list = new ArrayList<>();
         RevCommit prevCommit = null;
         LOG.debug("Start analyse {} commits", commits.size());
-        commitsFrom = Math.max(commitsFrom, 0);
-        commitsTo = Math.min(commitsTo, commits.size());
-        commitsTo = Math.max(commitsTo, 0);
-        for (int i = commitsFrom; i < commitsTo; i++) {
-            RevCommit revCommit = commits.get(i);
-            LOG.debug(" {} to {} commits", i, commitsTo);
+        LOG.debug(" {} to {} commits", commitsFrom, commitsTo);
+        for (RevCommit revCommit : commits) {
             Commit commit = new Commit(
                     revCommit.getFullMessage(),
                     new Author(revCommit.getAuthorIdent().getName()),