package beego
import (
"fmt"
"html/template"
"net/url"
"reflect"
"regexp"
"strconv"
"strings"
"time"
)
func webTime(t time.Time) string {
ftime := t.Format(time.RFC1123)
if strings.HasSuffix(ftime, "UTC") {
ftime = ftime[0:len(ftime)-3] + "GMT"
}
return ftime
}
func Substr(s string, start, length int) string {
bt := []rune(s)
if start < 0 {
start = 0
}
var end int
if (start + length) > (len(bt) - 1) {
end = len(bt)
} else {
end = start + length
}
return string(bt[start:end])
}
// Html2str() returns escaping text convert from html
func Html2str(html string) string {
src := string(html)
//将HTML标签全转换成小写
re, _ := regexp.Compile("\\<[\\S\\s]+?\\>")
src = re.ReplaceAllStringFunc(src, strings.ToLower)
//去除STYLE
re, _ = regexp.Compile("\\")
src = re.ReplaceAllString(src, "")
//去除SCRIPT
re, _ = regexp.Compile("\\")
src = re.ReplaceAllString(src, "")
//去除所有尖括号内的HTML代码，并换成换行符
re, _ = regexp.Compile("\\<[\\S\\s]+?\\>")
src = re.ReplaceAllString(src, "\n")
//去除连续的换行符
re, _ = regexp.Compile("\\s{2,}")
src = re.ReplaceAllString(src, "\n")
return strings.TrimSpace(src)
}
// 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
}
func Str2html(raw string) template.HTML {
return template.HTML(raw)
}
func Htmlquote(src string) string {
//HTML编码为实体符号
/*
Encodes `text` for raw use in HTML.
>>> htmlquote("<'&\\">")
'<'&">'
*/
text := string(src)
text = strings.Replace(text, "&", "&", -1) // Must be done first!
text = strings.Replace(text, "<", "<", -1)
text = strings.Replace(text, ">", ">", -1)
text = strings.Replace(text, "'", "'", -1)
text = strings.Replace(text, "\"", """, -1)
text = strings.Replace(text, "“", "“", -1)
text = strings.Replace(text, "”", "”", -1)
text = strings.Replace(text, " ", " ", -1)
return strings.TrimSpace(text)
}
func Htmlunquote(src string) string {
//实体符号解释为HTML
/*
Decodes `text` that's HTML quoted.
>>> htmlunquote('<'&">')
'<\\'&">'
*/
// strings.Replace(s, old, new, n)
// 在s字符串中，把old字符串替换为new字符串，n表示替换的次数，小于0表示全部替换
text := string(src)
text = strings.Replace(text, " ", " ", -1)
text = strings.Replace(text, "”", "”", -1)
text = strings.Replace(text, "“", "“", -1)
text = strings.Replace(text, """, "\"", -1)
text = strings.Replace(text, "'", "'", -1)
text = strings.Replace(text, ">", ">", -1)
text = strings.Replace(text, "<", "<", -1)
text = strings.Replace(text, "&", "&", -1) // Must be done last!
return strings.TrimSpace(text)
}
func inSlice(v string, sl []string) bool {
for _, vv := range sl {
if vv == v {
return true
}
}
return false
}
// parse form values to struct via tag
func ParseForm(form url.Values, obj interface{}) error {
objT := reflect.TypeOf(obj)
objV := reflect.ValueOf(obj)
if !(objT.Kind() == reflect.Ptr && objT.Elem().Kind() == reflect.Struct) {
return fmt.Errorf("%v must be a struct pointer", obj)
}
objT = objT.Elem()
objV = objV.Elem()
for i := 0; i < objT.NumField(); i++ {
fieldV := objV.Field(i)
if !fieldV.CanSet() {
continue
}
fieldT := objT.Field(i)
tag := fieldT.Tag.Get("form")
if len(tag) == 0 {
tag = fieldT.Name
}
value := form.Get(tag)
if len(value) == 0 {
continue
}
switch fieldT.Type.Kind() {
case reflect.Bool:
b, err := strconv.ParseBool(value)
if err != nil {
return err
}
fieldV.SetBool(b)
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
x, err := strconv.ParseInt(value, 10, 64)
if err != nil {
return err
}
fieldV.SetInt(x)
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
x, err := strconv.ParseUint(value, 10, 64)
if err != nil {
return err
}
fieldV.SetUint(x)
case reflect.Float32, reflect.Float64:
x, err := strconv.ParseFloat(value, 64)
if err != nil {
return err
}
fieldV.SetFloat(x)
case reflect.Interface:
fieldV.Set(reflect.ValueOf(value))
case reflect.String:
fieldV.SetString(value)
}
}
return nil
}