diff options
Diffstat (limited to 'src/api/git.js')
| -rw-r--r-- | src/api/git.js | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/src/api/git.js b/src/api/git.js new file mode 100644 index 0000000..dad7cc6 --- /dev/null +++ b/src/api/git.js @@ -0,0 +1,237 @@ +const { formatDistance } = require('date-fns'); +const fs = require('fs'); +const git = require("nodegit"); + +function addRepoDirSuffix(repo_name) +{ + if(!repo_name.endsWith(".git")) { + return repo_name + ".git"; + } + return repo_name; +} + +async function getLog(base_dir, repo_name) +{ + const repo = await git.Repository.openBare(`${base_dir}/${repo_name}`) + + const walker = git.Revwalk.create(repo); + walker.pushHead(); + + const raw_commits = await walker.getCommits(); + + const commits = Promise.all(raw_commits.map(async commit => ({ + commit: commit.sha(), + author_full: commit.author().toString(), + author_name: commit.author().name(), + author_email: commit.author().email(), + date: commit.date(), + message: commit.message().replace(/\n/g, ""), + insertions: (await (await commit.getDiff())[0].getStats()).insertions(), + deletions: (await (await commit.getDiff())[0].getStats()).deletions(), + files_changed: (await (await commit.getDiff())[0].getStats()).filesChanged() + }))); + + return await commits; +} + +async function getTimeSinceLatestCommit(base_dir, repo_name) +{ + const repo = await git.Repository.openBare(`${base_dir}/${repo_name}`) + const master_commit = await repo.getMasterCommit(); + + return formatDistance(new Date(), master_commit.date()); +} + +function getRepoFile(base_dir, repo, file) +{ + return new Promise(resolve => + { + fs.readFile(`${base_dir}/${repo}/${file}`, async (err, content) => + { + if(!err) { + resolve(content.toString().replace(/\n/g, "")); + return; + } + resolve(""); + }); + }); +} + +function getRepos(base_dir) +{ + return new Promise((resolve) => + { + fs.readdir(base_dir, (err, dir_content) => + { + if(err) { + resolve({ "error": err }); + return; + } + + dir_content.filter(repo => repo.endsWith(".git")).reduce((acc, repo) => + { + return acc.then((repos) => + { + return getRepoFile(base_dir, repo, "description").then((description) => + { + return getRepoFile(base_dir, repo, "owner").then((owner) => + { + return getTimeSinceLatestCommit(base_dir, repo).then((last_commit_date) => + { + repos[repo.slice(0, -4)] = { "description": description, "owner": owner, "last_updated": last_commit_date }; + return repos; + }); + }); + }); + }); + }, Promise.resolve({})).then((repos) => + { + resolve(repos); + }); + }); + }); +} + +function parseHunkAddDel(hunk) +{ + let new_lines = []; + let deleted_lines = []; + + hunk.forEach((line, index) => + { + if(line.charAt(0) === '+') { + hunk[index] = line.slice(1); + new_lines.push(index); + } + else if(line.charAt(0) === '-') { + hunk[index] = line.slice(1); + deleted_lines.push(index); + } + }); + + return { new: new_lines, deleted: deleted_lines, hunk: hunk.join("\n") }; +} + +async function getCommit(base_dir, repo_name, commit_oid) +{ + repo_name = addRepoDirSuffix(repo_name); + + const repo = await git.Repository.openBare(`${base_dir}/${repo_name}`) + const commit = await repo.getCommit(commit_oid); + const diff = (await commit.getDiff())[0]; + const all_patches = (await diff.toBuf(1)).split('\n'); + + // Get the count of lines for all of patches's headers + const patch_headers = (await diff.toBuf(2)).split('\n'); + const patch_header_data = await patch_headers.reduce((acc, line, index) => + { + return acc.then((arr) => + { + if(/^diff --git/.test(line)) { + arr[0].push(all_patches.indexOf(line)); + + if(arr[2] != undefined) { + arr[1].push(patch_headers.slice(arr[2], index).length); + } + arr[2] = index; + } + else if(index == patch_headers.length - 1 && arr[2] != undefined) { + arr[1].push(patch_headers.slice(arr[2], index).length); + } + return arr; + }); + }, Promise.resolve([ [], [], undefined ])); + + console.log(patch_header_data); + + const patches = await diff.patches(); + const parsed_patches = patches.reduce((acc, patch, patch_index) => + { + return acc.then((arr) => + { + return patch.hunks().then((hunks) => + { + console.log("\n" + patch.newFile().path()); + + const patch_start = patch_header_data[0][patch_index] + patch_header_data[1][patch_index]; + const patch_end = (patch_header_data[0][patch_index + 1] !== undefined) ? patch_header_data[0][patch_index + 1] : all_patches.length - 1; + const patch_content = all_patches.slice(patch_start, patch_end); + + const line_lengths = patch_content.map((line) => line.length).reduce((acc, length) => acc + length); + + if(patch_content.length > 5000 || line_lengths > 5000) { + console.log("Too large!"); + + arr.push({ + from: patch.oldFile().path(), + to: patch.newFile().path(), + additions: patch.lineStats()["total_additions"], + deletions: patch.lineStats()["total_deletions"], + too_large: true, + hunks: null + }); + return arr; + } + + // Go through all of the patch's hunks + // Patches are split into parts of where in the file the change is made. Those parts are called hunks. + return hunks.reduce((acc, hunk, hunk_index) => + { + return acc.then((hunks_data) => + { + const hunk_header = hunk.header(); + const hunk_header_index = patch_content.indexOf(hunk_header.replace(/\n/g, "")); + + if(hunks_data[0] !== undefined) { + const prev_hunk = hunks[hunk_index - 1]; + hunks_data[1].push(Object.assign({ + new_start: prev_hunk.newStart(), + new_lines: prev_hunk.newLines(), + old_start: prev_hunk.oldStart(), + old_lines: prev_hunk.oldLines(), + }, parseHunkAddDel(patch_content.slice(hunks_data[0], hunk_header_index)))); + + hunks_data[2] = hunks_data + patch_content.slice(hunks_data[0], hunk_header_index).length; + } + + hunks_data[0] = hunk_header_index; + return hunks_data; + }); + }, Promise.resolve([ undefined, [], 0 ])).then((hunks_data) => + { + const prev_hunk = hunks[hunks.length - 1]; + hunks_data[1].push(Object.assign({ + new_start: prev_hunk.newStart(), + new_lines: prev_hunk.newLines(), + old_start: prev_hunk.oldStart(), + old_lines: prev_hunk.oldLines(), + }, parseHunkAddDel(patch_content.slice(hunks_data[0], patch_end)))); + + arr.push({ + from: patch.oldFile().path(), + to: patch.isDeleted() ? "/dev/null" : patch.newFile().path(), + additions: patch.lineStats()["total_additions"], + deletions: patch.lineStats()["total_deletions"], + too_large: false, + hunks: hunks_data[1] + }); + + return arr; + }); + }); + }); + }, Promise.resolve([])); + + return { + hash: commit.sha(), + author: commit.author().toString(), + message: commit.message(), + date: commit.date(), + patches: await parsed_patches + }; +} + +module.exports.getLog = getLog; +module.exports.getRepos = getRepos; +module.exports.getRepoFile = getRepoFile; +module.exports.getCommit = getCommit;
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