feat(pre): add option to provide own commit message analyzer

lib/analyzer.js

@@ -1,9 +1,21 @@
 'use strict'
 
+var parseRawCommit = require('conventional-changelog/lib/git').parseRawCommit
+
 module.exports = function (commits) {
   var type = null
 
-  commits.every(function (commit) {
+  commits
+
+  .map(function (commit) {
+    return parseRawCommit(commit.hash + '\n' + commit.message)
+  })
+
+  .filter(function (commit) {
+    return !!commit
+  })
+
+  .every(function (commit) {
     if (commit.breaks.length) {
       type = 'major'
       return false

lib/commits.js

@@ -0,0 +1,27 @@
+'use strict'
+
+var exec = require('child_process').exec
+
+var efh = require('./error').efh
+
+module.exports = function (from, cb) {
+  var range = (from ? from + '..' : '') + 'HEAD'
+  exec(
+    'git log -E --format=%H==SPLIT==%s==END== ' + range,
+    efh(cb)(function (stdout) {
+      cb(null, String(stdout).split('==END==\n')
+
+      .filter(function (raw) {
+        return !!raw.trim()
+      })
+
+      .map(function (raw) {
+        var data = raw.split('==SPLIT==')
+        return {
+          hash: data[0],
+          message: data[1]
+        }
+      }))
+    })
+  )
+}

lib/type/commits.js

@@ -1,15 +0,0 @@
-'use strict'
-
-var git = require('conventional-changelog/lib/git')
-
-var efh = require('../error').efh
-
-module.exports = function (from, cb) {
-  git.getCommits({
-    log: console.log.bind(console),
-    warn: console.warn.bind(console),
-    from: from
-  }, efh(cb)(function (commits) {
-    cb(null, commits)
-  }))
-}

lib/type/index.js

@@ -1,11 +0,0 @@
-'use strict'
-
-var analyze = require('./analyze')
-var commits = require('./commits')
-var efh = require('../error').efh
-
-module.exports = function (gitHead, cb) {
-  commits(gitHead, efh(cb)(function (commits) {
-    cb(null, analyze(commits))
-  }))
-}