Update README.

README.md

@@ -251,6 +251,62 @@ Returns a plural suffix if the value is not 1. You can specify both a singular a
 
 
 
+#### boolYesno
+
+Returns argument strings according to the given boolean value.
+
+**Argument:** strings for true and false
+
+```
+{{ value | boolYesno "yes!" "no!" }}
+```
+
+
+#### stringRjust
+
+Right-aligns the given string in a field of a given width. This function also supports unicode strings. 
+
+```
+{{ value | stringRjust 10 }}
+```
+
+**Examples**
+
+1. If input is {{ "Go" | stringRjust 10 }}, the output will be "        Go".
+1. If input is {{ "안녕하세요" | stringRjust 10 }}, the output will be "     안녕하세요".
+
+
+
+#### stringLjust
+
+Left-aligns the given string in a field of a given width. This function also supports unicode strings. 
+
+```
+{{ value | stringLjust 10 }}
+```
+
+**Examples**
+
+1. If input is {{ "Go" | stringLjust 10 }}, the output will be "Go        ".
+1. If input is {{ "안녕하세요" | stringLjust 10 }}, the output will be "안녕하세요     ".
+
+
+
+#### stringCenter
+
+Centers the given string in a field of a given width. This function also supports unicode strings. 
+
+```
+{{ value | stringCenter 10 }}
+```
+
+**Examples**
+
+1. If input is {{ "Go" | stringCenter 10 }}, the output will be "    Go    ".
+1. If input is {{ "안녕하세요" | stringCenter 10 }}, the output will be "  안녕하세요   ".
+
+
+
 ## Goal
 The main goal is implementing all built-in template filters of Django & Jinja2.
 

gtf.go

@@ -109,6 +109,50 @@ var GtfFuncMap = template.FuncMap {
 
 		return bits[1]
 	},
+	"boolYesno": func(yes string, no string, value bool) string {
+		defer recovery()
+
+		if value {
+			return yes
+		}
+
+		return no
+	},
+	"stringRjust": func(arg int, value string) string {
+		defer recovery()
+
+		n := arg - len([]rune(value))
+
+		if n > 0 {
+			value = strings.Repeat(" ", n) + value
+		}
+
+		return value
+	},
+	"stringLjust": func(arg int, value string) string {
+		defer recovery()
+
+		n := arg - len([]rune(value))
+
+		if n > 0 {
+			value = value + strings.Repeat(" ", n)
+		}
+
+		return value
+	},
+	"stringCenter": func(arg int, value string) string {
+		defer recovery()
+
+		n := arg - len([]rune(value))
+
+		if n > 0 {
+			left := n / 2
+			right := n - left
+			value = strings.Repeat(" ", left) + value + strings.Repeat(" ", right)
+		}
+
+		return value
+	},
 }
 
 // gtf.New is a wrapper function of template.New(http://golang.org/pkg/text/template/#New). 

gtf_test.go

@@ -113,4 +113,28 @@ func TestGtfFuncMap(t *testing.T) {
 
 	ParseTest(&buffer, "{{ 2 | intPluralize \"y,ies,s\" }}")
 	AssertEqual(t, &buffer, "")
+
+	ParseTest(&buffer, "{{ true | boolYesno \"yes~\" \"no~\" }}")
+	AssertEqual(t, &buffer, "yes~")
+
+	ParseTest(&buffer, "{{ false | boolYesno \"yes~\" \"no~\" }}")
+	AssertEqual(t, &buffer, "no~")
+
+	ParseTest(&buffer, "{{ \"Go\" | stringRjust 10 }}")
+	AssertEqual(t, &buffer, "        Go")
+
+	ParseTest(&buffer, "{{ \"안녕하세요\" | stringRjust 10 }}")
+	AssertEqual(t, &buffer, "     안녕하세요")
+
+	ParseTest(&buffer, "{{ \"Go\" | stringLjust 10 }}")
+	AssertEqual(t, &buffer, "Go        ")
+
+	ParseTest(&buffer, "{{ \"안녕하세요\" | stringLjust 10 }}")
+	AssertEqual(t, &buffer, "안녕하세요     ")
+
+	ParseTest(&buffer, "{{ \"Go\" | stringCenter 10 }}")
+	AssertEqual(t, &buffer, "    Go    ")
+
+	ParseTest(&buffer, "{{ \"안녕하세요\" | stringCenter 10 }}")
+	AssertEqual(t, &buffer, "  안녕하세요   ")
 }