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angular.js/compare-master-to-stable.js
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cf0e6f3 Brian Ford chore(release): add script for comparing master and stable branches
btford authored
1 #!/usr/local/bin/node
2
fe1188d Michał Gołębiowski refactor(jshint): reduce duplication & test all JS files
mzgol authored
3 'use strict';
4
cf0e6f3 Brian Ford chore(release): add script for comparing master and stable branches
btford authored
5 var util = require('util');
6 var cp = require('child_process');
7
8 var Q = require('q');
9 var _ = require('lodash');
10 var semver = require('semver');
11
12 var exec = function (cmd) {
13 return function () {
14 var args = Array.prototype.slice.call(arguments, 0);
15 args.unshift(cmd);
16 var fullCmd = util.format.apply(util, args);
17 return Q.nfcall(cp.exec, fullCmd).then(function (out) {
18 return out[0].split('\n');
19 });
20 };
21 };
22
23 var andThen = function (fn, after) {
24 return function () {
25 return fn.apply(this, arguments).then(after);
26 };
27 };
28
29 var oneArg = function (fn) {
30 return function (arg) {
31 return fn(arg);
32 };
33 };
34
35 var oneLine = function (lines) {
36 return lines[0].trim();
37 };
38
39 var noArgs = function (fn) {
40 return function () {
41 return fn();
42 };
43 };
44
45 var identity = function (i) { return i; };
46
47 // like Q.all, but runs the comands in series
48 // useful for ensuring env state (like which branch is checked out)
49 var allInSeries = function (fn) {
50 return function (args) {
51 var results = [];
52 var def;
53 while (args.length > 0) {
54 (function (arg) {
55 if (def) {
56 def = def.then(function () {
57 return fn(arg);
58 });
59 } else {
60 def = fn(arg);
61 }
62 def = def.then(function (res) {
63 results.push(res);
64 });
65 }(args.pop()));
66 }
67 return def.then(function () {
68 return results;
69 });
70 };
71 };
72
73 var compareBranches = function (left, right) {
74 console.log('# These commits are in ' + left.name + ' but not in ' + right.name + '\n');
75 console.log(_(left.log).
76 difference(right.log).
77 map(function (line) {
78 return left.full[left.log.indexOf(line)]; // lol O(n^2)
79 }).
80 value().
81 join('\n'));
82 };
83
84 var checkout = oneArg(exec('git checkout %s'));
85
86 var getCurrentBranch = andThen(noArgs(exec('git rev-parse --abbrev-ref HEAD')), oneLine);
87 var getTags = noArgs(exec('git tag'));
88 var getShaOfTag = oneArg(exec('git rev-list %s | head -n 1'));
89 var getTheLog = oneArg(exec('git log --pretty=oneline %s..HEAD | cat'));
90
91 // remember this so we can restore state
92 var currentBranch;
93
94 getCurrentBranch().
95 then(function (branch) {
96 currentBranch = branch;
97 }).
98 then(getTags).
99 then(function (tags) {
100 return tags.
101 filter(semver.valid).
102 map(semver.clean).
103 sort(semver.rcompare);
104 }).
105 then(function (tags) {
106 var major = tags[0].split('.')[0] + '.x';
107 return tags.
108 filter(function (ver) {
109 return semver.satisfies(ver, major);
110 });
111 }).
112 then(function (tags) {
113 return _(tags).
114 groupBy(function (tag) {
115 return tag.split('.')[1];
116 }).
117 map(function (group) {
118 return _.first(group);
119 }).
120 map(function (tag) {
121 return 'v' + tag;
122 }).
123 value();
124 }).
125 then(function (tags) {
126 return [
127 { name: 'v1.0.x', tag: tags[0] },
128 { name: 'master', tag: tags[1] }
129 ];
130 }).
131 then(allInSeries(function (branch) {
132 return checkout(branch.name).
133 then(function () {
134 return getTheLog(branch.tag);
135 }).
136 then(function (log) {
137 return log.
138 filter(identity);
139 }).
140 then(function (log) {
141 branch.full = log.map(function (line) {
142 line = line.split(' ');
143 var sha = line.shift();
144 var msg = line.join(' ');
145 return sha + (msg.toLowerCase().indexOf('fix') === -1 ? ' ' : ' * ') + msg;
146 });
147 branch.log = log.map(function (line) {
fe1188d Michał Gołębiowski refactor(jshint): reduce duplication & test all JS files
mzgol authored
148 return line.substr(41);
cf0e6f3 Brian Ford chore(release): add script for comparing master and stable branches
btford authored
149 });
150 return branch;
151 });
152 })).
153 then(function (pairs) {
154 compareBranches(pairs[0], pairs[1]);
155 console.log('\n');
156 compareBranches(pairs[1], pairs[0]);
157 return pairs;
158 }).
159 then(function () {
160 return checkout(currentBranch);
161 }).
162 catch(function (e) {
163 console.log(e.stack);
164 });
165
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