diff options
Diffstat (limited to 'app/src/main/java/com/zeapo/pwdstore/git/log')
4 files changed, 165 insertions, 0 deletions
diff --git a/app/src/main/java/com/zeapo/pwdstore/git/log/GitCommit.kt b/app/src/main/java/com/zeapo/pwdstore/git/log/GitCommit.kt new file mode 100644 index 00000000..d2425592 --- /dev/null +++ b/app/src/main/java/com/zeapo/pwdstore/git/log/GitCommit.kt @@ -0,0 +1,18 @@ +/* + * Copyright © 2014-2020 The Android Password Store Authors. All Rights Reserved. + * SPDX-License-Identifier: GPL-3.0-only + */ + +package com.zeapo.pwdstore.git.log + +import java.util.Date + +/** + * Basic information about a git commit. + * + * @property hash full-length hash of the commit object. + * @property shortMessage the commit's short message (i.e. title line). + * @property authorName name of the commit's author without email address. + * @property time time when the commit was created. + */ +data class GitCommit(val hash: String, val shortMessage: String, val authorName: String, val time: Date) diff --git a/app/src/main/java/com/zeapo/pwdstore/git/log/GitLogActivity.kt b/app/src/main/java/com/zeapo/pwdstore/git/log/GitLogActivity.kt new file mode 100644 index 00000000..8c1c0f09 --- /dev/null +++ b/app/src/main/java/com/zeapo/pwdstore/git/log/GitLogActivity.kt @@ -0,0 +1,38 @@ +/* + * Copyright © 2014-2020 The Android Password Store Authors. All Rights Reserved. + * SPDX-License-Identifier: GPL-3.0-only + */ + +package com.zeapo.pwdstore.git.log + +import android.os.Bundle +import androidx.recyclerview.widget.DividerItemDecoration +import androidx.recyclerview.widget.LinearLayoutManager +import com.zeapo.pwdstore.databinding.ActivityGitLogBinding +import com.zeapo.pwdstore.git.BaseGitActivity +import com.zeapo.pwdstore.utils.viewBinding + +/** + * Displays the repository's git commits in git-log fashion. + * + * It provides basic information about each commit by way of a non-interactive RecyclerView. + */ +class GitLogActivity : BaseGitActivity() { + + private val binding by viewBinding(ActivityGitLogBinding::inflate) + + override fun onCreate(savedInstanceState: Bundle?) { + super.onCreate(savedInstanceState) + setContentView(binding.root) + supportActionBar?.setDisplayHomeAsUpEnabled(true) + createRecyclerView() + } + + private fun createRecyclerView() { + binding.gitLogRecyclerView.apply { + setHasFixedSize(true) + addItemDecoration(DividerItemDecoration(context, LinearLayoutManager.VERTICAL)) + adapter = GitLogAdapter() + } + } +} diff --git a/app/src/main/java/com/zeapo/pwdstore/git/log/GitLogAdapter.kt b/app/src/main/java/com/zeapo/pwdstore/git/log/GitLogAdapter.kt new file mode 100644 index 00000000..a15e7f7e --- /dev/null +++ b/app/src/main/java/com/zeapo/pwdstore/git/log/GitLogAdapter.kt @@ -0,0 +1,56 @@ +/* + * Copyright © 2014-2020 The Android Password Store Authors. All Rights Reserved. + * SPDX-License-Identifier: GPL-3.0-only + */ + +package com.zeapo.pwdstore.git.log + +import android.view.LayoutInflater +import android.view.ViewGroup +import androidx.recyclerview.widget.RecyclerView +import com.github.ajalt.timberkt.e +import com.zeapo.pwdstore.databinding.GitLogRowLayoutBinding +import java.text.DateFormat +import java.util.Date + +private fun shortHash(hash: String): String { + return hash.substring(0 until 8) +} + +private fun stringFrom(date: Date): String { + return DateFormat.getDateTimeInstance().format(date) +} + +/** + * @see GitLogActivity + */ +class GitLogAdapter : RecyclerView.Adapter<GitLogAdapter.ViewHolder>() { + + private val model = GitLogModel() + + override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder { + val inflater = LayoutInflater.from(parent.context) + val binding = GitLogRowLayoutBinding.inflate(inflater, parent, false) + return ViewHolder(binding) + } + + override fun onBindViewHolder(viewHolder: ViewHolder, position: Int) { + val commit = model.get(position) + if (commit == null) { + e { "There is no git commit for view holder at position $position." } + return + } + viewHolder.bind(commit) + } + + override fun getItemCount() = model.size + + class ViewHolder(private val binding: GitLogRowLayoutBinding) : RecyclerView.ViewHolder(binding.root) { + + fun bind(commit: GitCommit) = with(binding) { + gitLogRowMessage.text = commit.shortMessage + gitLogRowHash.text = shortHash(commit.hash) + gitLogRowTime.text = stringFrom(commit.time) + } + } +} diff --git a/app/src/main/java/com/zeapo/pwdstore/git/log/GitLogModel.kt b/app/src/main/java/com/zeapo/pwdstore/git/log/GitLogModel.kt new file mode 100644 index 00000000..22c1ec78 --- /dev/null +++ b/app/src/main/java/com/zeapo/pwdstore/git/log/GitLogModel.kt @@ -0,0 +1,53 @@ +/* + * Copyright © 2014-2020 The Android Password Store Authors. All Rights Reserved. + * SPDX-License-Identifier: GPL-3.0-only + */ + +package com.zeapo.pwdstore.git.log + +import com.github.ajalt.timberkt.e +import com.zeapo.pwdstore.utils.PasswordRepository +import com.zeapo.pwdstore.utils.hash +import com.zeapo.pwdstore.utils.time +import org.eclipse.jgit.api.Git +import org.eclipse.jgit.revwalk.RevCommit + +private fun commits(): Iterable<RevCommit> { + val repo = PasswordRepository.getRepository(null) + if (repo == null) { + e { "Could not access git repository" } + return listOf() + } + return try { + Git(repo).log().call() + } catch (exc: Exception) { + e(exc) { "Failed to obtain git commits" } + listOf() + } +} + +/** + * Provides [GitCommit]s from a git-log of the password git repository. + * + * All commits are acquired on the first request to this object. + */ +class GitLogModel { + + // All commits are acquired here at once. Acquiring the commits in batches would not have been + // entirely sensible because the amount of computation required to obtain commit number n from + // the log includes the amount of computation required to obtain commit number n-1 from the log. + // This is because the commit graph is walked from HEAD to the last commit to obtain. + // Additionally, tests with 1000 commits in the log have not produced a significant delay in the + // user experience. + private val cache: MutableList<GitCommit> by lazy { + commits().map { + GitCommit(it.hash, it.shortMessage, it.authorIdent.name, it.time) + }.toMutableList() + } + val size = cache.size + + fun get(index: Int): GitCommit? { + if (index >= size) e { "Cannot get git commit with index $index. There are only $size." } + return cache.getOrNull(index) + } +} |