package beego //@todo add template funcs import ( //"fmt" "errors" "fmt" "github.com/russross/blackfriday" "html/template" "strings" "time" ) var beegoTplFuncMap template.FuncMap func init() { beegoTplFuncMap = make(template.FuncMap) beegoTplFuncMap["markdown"] = MarkDown beegoTplFuncMap["dateformat"] = DateFormat beegoTplFuncMap["date"] = Date beegoTplFuncMap["compare"] = Compare } // MarkDown parses a string in MarkDown format and returns HTML. Used by the template parser as "markdown" func MarkDown(raw string) (output template.HTML) { input := []byte(raw) bOutput := blackfriday.MarkdownBasic(input) output = template.HTML(string(bOutput)) return } // DateFormat takes a time and a layout string and returns a string with the formatted date. Used by the template parser as "dateformat" func DateFormat(t time.Time, layout string) (datestring string) { datestring = t.Format(layout) return } // Date takes a PHP like date func to Go's time fomate func Date(t time.Time, format string) (datestring string) { patterns := []string{ // year "Y", "2006", // A full numeric representation of a year, 4 digits Examples: 1999 or 2003 "y", "06", //A two digit representation of a year Examples: 99 or 03 // month "m", "01", // Numeric representation of a month, with leading zeros 01 through 12 "n", "1", // Numeric representation of a month, without leading zeros 1 through 12 "M", "Jan", // A short textual representation of a month, three letters Jan through Dec "F", "January", // A full textual representation of a month, such as January or March January through December // day "d", "02", // Day of the month, 2 digits with leading zeros 01 to 31 "j", "2", // Day of the month without leading zeros 1 to 31 // week "D", "Mon", // A textual representation of a day, three letters Mon through Sun "l", "Monday", // A full textual representation of the day of the week Sunday through Saturday // time "g", "3", // 12-hour format of an hour without leading zeros 1 through 12 "G", "15", // 24-hour format of an hour without leading zeros 0 through 23 "h", "03", // 12-hour format of an hour with leading zeros 01 through 12 "H", "15", // 24-hour format of an hour with leading zeros 00 through 23 "a", "pm", // Lowercase Ante meridiem and Post meridiem am or pm "A", "PM", // Uppercase Ante meridiem and Post meridiem AM or PM "i", "04", // Minutes with leading zeros 00 to 59 "s", "05", // Seconds, with leading zeros 00 through 59 } replacer := strings.NewReplacer(patterns...) format = replacer.Replace(format) datestring = t.Format(format) return } // Compare is a quick and dirty comparison function. It will convert whatever you give it to strings and see if the two values are equal. // Whitespace is trimmed. Used by the template parser as "eq" func Compare(a, b interface{}) (equal bool) { equal = false if strings.TrimSpace(fmt.Sprintf("%v", a)) == strings.TrimSpace(fmt.Sprintf("%v", b)) { equal = true } return } // AddFuncMap let user to register a func in the template func AddFuncMap(key string, funname interface{}) error { if _, ok := beegoTplFuncMap[key]; ok { beegoTplFuncMap[key] = funname return nil } return errors.New("funcmap already has the key") }