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