Merge pull request #33 from tj/add-user

add user

.gitignore

@@ -1 +1,2 @@
+/robo.yml
 dist

Readme.md

@@ -216,6 +216,20 @@ variables:
  stage: bastion-stage
 ```
 
+ Along with your own custom variables, robo defines the following variables:
+
+```bash
+$ robo variables
+
+ robo.file: /Users/amir/dev/src/github.com/tj/robo/robo.yml
+ robo.path: /Users/amir/dev/src/github.com/tj/robo
+
+ user.home: /Users/amir
+ user.name: Amir Abushareb
+ user.username: amir
+
+```
+
 ### Environment
 
 Tasks may define `env` key with an array of environment variables, this allows you

_examples/user/user.yml

@@ -0,0 +1,4 @@
+
+user:
+ summary: print the current user variables
+ command: echo user={{ .user }}

config/config.go

@@ -3,6 +3,7 @@ package config
 import (
  "bytes"
  "io/ioutil"
+ "os/user"
  "path"
  "text/template"
 
@@ -76,6 +77,17 @@ func New(file string) (*Config, error) {
  }
  }
 
+ // Add the current user.
+ if _, ok := c.Variables["user"]; !ok {
+ if user, err := user.Current(); err == nil {
+ c.Variables["user"] = map[string]string{
+ "name": user.Name,
+ "username": user.Username,
+ "home": user.HomeDir,
+ }
+ }
+ }
+
  // Interpolate variables.
  if err := c.Eval(); err != nil {
  return nil, err