1 files changed, 74 insertions, 0 deletions
diff --git a/lib/git.js b/lib/git.js
index 048e2b3..07061e2 100644
--- a/lib/git.js
+++ b/lib/git.js
@@ -10,6 +10,12 @@ var zlib = require('zlib')
 
 var ObjectNotFoundError = u.customError('ObjectNotFoundError')
 
+var types = {
+  blob: true,
+  commit: true,
+  tree: true,
+}
+
 module.exports = Git
 
 function Git(app) {
@@ -456,3 +462,71 @@ Git.prototype.getCommit = function (obj, cb) {
     cb(null, commit)
   }))
 }
+
+Git.prototype.getTag = function (obj, cb) {
+  pull(this.readObject(obj), u.pullConcat(function (err, buf) {
+    if (err) return cb(err)
+    var tag = {
+      msg: obj.msg,
+    }
+    var authorLine, tagterLine
+    var lines = buf.toString('utf8').split('\n')
+    for (var line; (line = lines.shift()); ) {
+      var parts = line.split(' ')
+      var prop = parts.shift()
+      var value = parts.join(' ')
+      switch (prop) {
+        case 'object':
+          tag.object = value
+          break
+        case 'type':
+          if (!types[value])
+            return cb(new TypeError('unknown git object type ' + type))
+          tag.type = value
+          break
+        case 'tag':
+          tag.tag = value
+          break
+        case 'tagger':
+          tag.tagger = parseName(value)
+          break
+        default:
+          return cb(new TypeError('unknown git object property ' + prop))
+      }
+    }
+    tag.body = lines.join('\n')
+    cb(null, tag)
+  }))
+}
+
+function readCString(reader, cb) {
+  var chars = []
+  reader.read(1, function next(err, ch) {
+    if (err) return cb(err)
+    if (ch[0] === 0) return cb(null, Buffer.concat(chars).toString('utf8'))
+    chars.push(ch)
+    reader.read(1, next)
+  })
+}
+
+Git.prototype.readTree = function (obj) {
+  var reader = Reader()
+  reader(this.readObject(obj))
+  return function (abort, cb) {
+    if (abort) return reader.abort(abort, cb)
+    readCString(reader, function (err, str) {
+      if (err) return cb(err)
+      var parts = str.split(' ')
+      var mode = parseInt(parts[0], 8)
+      var name = parts.slice(1).join(' ')
+      reader.read(20, function (err, hash) {
+        if (err) return cb(err)
+        cb(null, {
+          name: name,
+          mode: mode,
+          hash: hash.toString('hex')
+        })
+      })
+    })
+  }
+}