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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;
}
function getLog(base_dir, repo_name)
{
return new Promise(async (resolve) =>
{
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()
})));
resolve(await commits);
});
}
function getTimeSinceLatestCommit(base_dir, repo_name)
{
return new Promise(async (resolve) =>
{
const repo = await git.Repository.openBare(`${base_dir}/${repo_name}`)
const master_commit = await repo.getMasterCommit();
resolve(formatDistance(new Date(), master_commit.date()));
});
}
function getRepoFile(base_dir, repo, file)
{
return new Promise(resolve =>
{
fs.readFile(`${base_dir}/${repo}/${file}`, async (err, content) =>
{
if(!err) {
resolve(content.toString().replace(/\n/g, ""));
return;
}
resolve("");
});
});
}
function getRepos(base_dir)
{
return new Promise((resolve) =>
{
fs.readdir(base_dir, async (err, dir_content) =>
{
if(err) {
resolve({ "error": err });
return;
}
dir_content = dir_content.filter(repo => repo.endsWith(".git"));
let repos = {};
dir_content.forEach(async (repo, index) =>
{
const desc = await getRepoFile(base_dir, repo, "description");
const owner = await getRepoFile(base_dir, repo, "owner");
const last_commit_date = await getTimeSinceLatestCommit(base_dir, repo);
let repo_name = "";
repo_name = repo.slice(0, -4);
repos[repo_name] = { "description": desc, "owner": owner, "last_updated": last_commit_date };
if(index === 0) {
resolve(repos);
}
});
});
});
}
function parseHunkAddDel(hunk)
{
let new_lines = [];
let deleted_lines = [];
hunk.forEach((line, index) =>
{
if(line.charAt(0) === '+') {
hunk[index] = line.slice(1);
new_lines.push(index);
}
else if(line.charAt(0) === '-') {
hunk[index] = line.slice(1);
deleted_lines.push(index);
}
});
return { new: new_lines, deleted: deleted_lines, hunk: hunk.join("\n") };
}
function getCommit(base_dir, repo_name, commit_oid)
{
return new Promise(async (resolve) =>
{
repo_name = addRepoDirSuffix(repo_name);
const repo = await git.Repository.openBare(`${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 test = patches.reduce((acc, patch, patch_index) =>
{
return acc.then((arr) =>
{
return patch.hunks().then((hunks) =>
{
console.log(patch.newFile().path());
// 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 = all_patches.indexOf(hunk_header.replace(/\n/g, ""));
const hunk_header_index = patch_header_data[0][patch_index] + hunks_data[2] + patch_header_data[1][patch_index];
if(hunks_data[0] !== undefined) {
const prev_hunk = hunks[hunk_index - 1];
//console.log(all_patches.slice(last_index, hunk_header_index));
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(all_patches.slice(hunks_data[0], hunk_header_index))));
hunks_data[2] = hunks_data + all_patches.slice(hunks_data[0], hunk_header_index).length;
}
hunks_data[0] = hunk_header_index;
return hunks_data;
});
}, Promise.resolve([undefined, [], 0])).then((hunks_data) =>
{
console.log(" Patch start: " + hunks_data[0] + " " + all_patches[hunks_data[0]]);
const patch_end = (patch_header_data[0][patch_index + 1] !== undefined) ? patch_header_data[0][patch_index + 1] : all_patches.length;
console.log(" Patch end: " + patch_end + " " + all_patches[patch_end]);
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(all_patches.slice(hunks_data[0], patch_end))));
if(patch_index === 8 || patch_index === 7) {
console.log(all_patches.slice(hunks_data[0], patch_end));
}
arr.push({ from: patch.oldFile().path(), to: patch.newFile().path(), hunks: hunks_data[1] });
return arr;
});
});
});
}, Promise.resolve([]));
test.then((result) =>
{
resolve({
hash: commit.sha(),
author: commit.author().toString(),
message: commit.message(),
date: commit.date(),
patches: result
});
//console.log(result);
});
});
}
module.exports.getLog = getLog;
module.exports.getRepos = getRepos;
module.exports.getRepoFile = getRepoFile;
module.exports.getCommit = getCommit;
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