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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 | + |
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