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| 1 | +package processing.app.git; |
| 2 | + |
| 3 | +import org.eclipse.jgit.api.Git; |
| 4 | +import org.eclipse.jgit.api.errors.GitAPIException; |
| 5 | +import org.eclipse.jgit.api.errors.NoHeadException; |
| 6 | +import org.eclipse.jgit.errors.RepositoryNotFoundException; |
| 7 | +import org.eclipse.jgit.lib.Repository; |
| 8 | +import org.eclipse.jgit.revwalk.RevCommit; |
| 9 | +import org.eclipse.jgit.storage.file.FileRepositoryBuilder; |
| 10 | + |
| 11 | +import java.io.File; |
| 12 | +import java.io.IOException; |
| 13 | +import java.util.function.Consumer; |
| 14 | + |
| 15 | + |
| 16 | +public class GitManager { |
| 17 | + |
| 18 | + public void init(File repoDir) { |
| 19 | + try (Git git = Git.init().setDirectory(repoDir).call()) { |
| 20 | + System.out.println("Having repository: " + git.getRepository().getDirectory()); |
| 21 | + } catch (GitAPIException e) { |
| 22 | + e.printStackTrace(); |
| 23 | + } |
| 24 | + } |
| 25 | + |
| 26 | + public void commit(File repoDir, String message) { |
| 27 | + if (!commitMessageIsValid(message)) { |
| 28 | + System.err.println("Commit message isn't valid."); |
| 29 | + return; |
| 30 | + } |
| 31 | + |
| 32 | + File[] files = repoDir.listFiles(); |
| 33 | + |
| 34 | + Consumer<Git> commitCommand = git -> { |
| 35 | + try { |
| 36 | + addFiles(files, git); |
| 37 | + commit(message, git); |
| 38 | + System.out.printf("Committed file to repository at: %s%n", git.getRepository().getDirectory()); |
| 39 | + } catch (GitAPIException e) { |
| 40 | + e.printStackTrace(); |
| 41 | + } |
| 42 | + }; |
| 43 | + |
| 44 | + runGitCommand(repoDir, commitCommand); |
| 45 | + } |
| 46 | + |
| 47 | + public void log(File repoDir) { |
| 48 | + |
| 49 | + Consumer<Git> logCommand = git -> { |
| 50 | + try { |
| 51 | + Iterable<RevCommit> logs = git.log() |
| 52 | + .call(); |
| 53 | + |
| 54 | + int count = 0; |
| 55 | + for (RevCommit rev : logs) { |
| 56 | + System.out.printf("Commit: %s, name: %s%n", rev, rev.getName()); |
| 57 | + count++; |
| 58 | + } |
| 59 | + |
| 60 | + System.out.printf("Had %d commits overall on current branch%n", count); |
| 61 | + |
| 62 | + } catch (NoHeadException e) { |
| 63 | + System.err.printf("Repository %s is empty. Try to commit something.%n", git.getRepository().getDirectory()); |
| 64 | + } catch (GitAPIException e) { |
| 65 | + e.printStackTrace(); |
| 66 | + } |
| 67 | + }; |
| 68 | + |
| 69 | + runGitCommand(repoDir, logCommand); |
| 70 | + } |
| 71 | + |
| 72 | + private boolean commitMessageIsValid(String message) { |
| 73 | + return !message.trim().isEmpty(); |
| 74 | + } |
| 75 | + |
| 76 | + private void addFiles(File[] files, Git git) throws GitAPIException { |
| 77 | + for (File file : files) { |
| 78 | + git.add() |
| 79 | + .addFilepattern(file.getName()) |
| 80 | + .call(); |
| 81 | + } |
| 82 | + } |
| 83 | + |
| 84 | + private void commit(String message, Git git) throws GitAPIException { |
| 85 | + git.commit() |
| 86 | + .setMessage(message) |
| 87 | + .call(); |
| 88 | + } |
| 89 | + |
| 90 | + private void runGitCommand(File repoDir, Consumer<Git> command) { |
| 91 | + File gitDir = new File(repoDir, ".git"); |
| 92 | + if (gitDir.exists()) { |
| 93 | + repoDir = gitDir; |
| 94 | + } |
| 95 | + |
| 96 | + FileRepositoryBuilder builder = new FileRepositoryBuilder(); |
| 97 | + try (Repository repository = builder.setGitDir(repoDir) |
| 98 | + .readEnvironment() // scan environment GIT_* variables |
| 99 | + .findGitDir(repoDir) // scan up the file system tree |
| 100 | + .setMustExist(true) |
| 101 | + .build()) { |
| 102 | + |
| 103 | + try (Git git = new Git(repository)) { |
| 104 | + command.accept(git); |
| 105 | + } |
| 106 | + |
| 107 | + } catch (RepositoryNotFoundException e) { |
| 108 | + System.err.printf("Repository not found: %s. Try create git repository.%n", repoDir); |
| 109 | + } catch (IOException e) { |
| 110 | + e.printStackTrace(); |
| 111 | + } |
| 112 | + |
| 113 | + } |
| 114 | + |
| 115 | +} |
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