goconfig

; Google
google=www.google.com
search: http://%(google)s

; Here are Comments
; Second line
[Demo]
# This symbol can also make this line to be comments
key1=Let's us GoConfig!!!
key2=test data
key3=this is based on key2:%(key2)s

[What's this?]
; Not Enough Comments!!
name=try one more value ^-^

[parent]
name=john
relation=father
sex=male
age=32

[parent.child]
age=3

[parent.child.child]

; Auto increment by setting key to "-"
[auto increment]
-:hello
-:go
-=config

	c, err := LoadConfigFile("config.ini")
	if err != nil {
		t.Error(err)
	}

	// GetValue
	value, _ := c.GetValue("Demo", "key1") // return "Let's use GoConfig!!!"
	if value != "Let's us GoConfig!!!" {
		t.Error("Error occurs when GetValue of key1")
	}

	// GetComments
	comments := c.GetKeyComments("Demo", "key1") // return "# This symbol can also make this line to be comments"
	if comments != "# This symbol can also make this line to be comments" {
		t.Error("Error occurs when GetKeyComments")
	}

	// SetValue
	c.SetValue("What's this?", "name", "Do it!") // Now name's value is "Do it!"
	search, _ := c.GetValue(DEFAULT_SECTION, "search")
	c.SetValue(DEFAULT_SECTION, "path", search)
	key3, _ := c.GetValue("Demo", "key3")
	c.SetValue("Demo", "key3", key3)

	// You can even edit comments in your code
	c.SetKeyComments("Demo", "key1", "")
	c.SetKeyComments("Demo", "key2", "comments by code without symbol")
	c.SetKeyComments("Demo", "key3", "# comments by code with symbol")

	// Don't need that key any more? Pass empty string "" to remove! that's all!'
	c.SetValue("What's this?", "name", "") // If your key was removed, its comments will be removed too!
	c.SetValue("What's this?", "name_test", "added by test")

	// Support for recursion sections.
	age, _ := c.GetValue("parent.child", "age")
	if age != "3" {
		t.Errorf("Recursion section: should have %d but get %s.", 3, age) // 3, not 32.
	}
	name, _ := c.GetValue("parent.child", "name")
	if name != "john" {
		t.Errorf("Recursion section: should have %s but get %s.", "john", name) // "john", not empty.
	}
	name, _ = c.GetValue("parent.child.child", "name")
	if name != "john" {
		t.Errorf("Recursion section2: should have %s but get %s.", "john", name) // "john", not empty.
	}

	// GetSection and auto increment.
	se, _ := c.GetSection("auto increment")
	if len(se) != 3 {
		t.Errorf("GetSection: should have %d of map elements but get %d.", 3,
			len(se)) // 3
	}

	hello, _ := c.GetValue("auto increment", "#1")
	if hello != "hello" {
		t.Error("Error occurs when GetValue of auto increment: " + hello) // "hello", not empty.
	}

	// Finally, you need to save it
	SaveConfigFile(c, "config_test.ini")

go get github.com/Unknwon/goconfig