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move utils to utils libs & func move to templatefunc

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This commit is contained in:
astaxie 2013-12-12 22:25:08 +08:00
parent d603a6714d
commit 19119e99f7
7 changed files with 555 additions and 591 deletions
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14
controller.go
View File

@ -3,6 +3,7 @@ package beego
import (
"bytes"
"crypto/hmac"
"crypto/rand"
"crypto/sha1"
"encoding/base64"
"errors"
@ -370,7 +371,7 @@ func (c *Controller) XsrfToken() string {
} else {
expire = int64(XSRFExpire)
}
token = GetRandomString(15)
token = getRandomString(15)
c.SetSecureCookie(XSRFKEY, "_xsrf", token, expire)
}
c._xsrf_token = token
@ -405,3 +406,14 @@ func (c *Controller) GoToFunc(funcname string) {
}
c.gotofunc = funcname
}
//utils func for controller internal
func getRandomString(n int) string {
const alphanum = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
var bytes = make([]byte, n)
rand.Read(bytes)
for i, b := range bytes {
bytes[i] = alphanum[b%byte(len(alphanum))]
}
return string(bytes)
}

9
router.go
View File

@ -15,6 +15,7 @@ import (
beecontext "github.com/astaxie/beego/context"
"github.com/astaxie/beego/middleware"
"github.com/astaxie/beego/toolbox"
"github.com/astaxie/beego/utils"
)
const (
@ -159,7 +160,7 @@ func (p *ControllerRegistor) Add(pattern string, c ControllerInterface, mappingM
}
comma := strings.Split(colon[0], ",")
for _, m := range comma {
if m == "*" || inSlice(strings.ToLower(m), HTTPMETHOD) {
if m == "*" || utils.InSlice(strings.ToLower(m), HTTPMETHOD) {
if val := reflectVal.MethodByName(colon[1]); val.IsValid() {
methods[strings.ToLower(m)] = colon[1]
} else {
@ -272,7 +273,7 @@ func (p *ControllerRegistor) UrlFor(endpoint string, values ...string) string {
for _, route := range p.fixrouters {
if route.controllerType.Name() == controllName {
var finded bool
if inSlice(strings.ToLower(methodName), HTTPMETHOD) {
if utils.InSlice(strings.ToLower(methodName), HTTPMETHOD) {
if route.hasMethod {
if m, ok := route.methods[strings.ToLower(methodName)]; ok && m != methodName {
finded = false
@ -303,7 +304,7 @@ func (p *ControllerRegistor) UrlFor(endpoint string, values ...string) string {
for _, route := range p.routers {
if route.controllerType.Name() == controllName {
var finded bool
if inSlice(strings.ToLower(methodName), HTTPMETHOD) {
if utils.InSlice(strings.ToLower(methodName), HTTPMETHOD) {
if route.hasMethod {
if m, ok := route.methods[strings.ToLower(methodName)]; ok && m != methodName {
finded = false
@ -419,7 +420,7 @@ func (p *ControllerRegistor) ServeHTTP(rw http.ResponseWriter, r *http.Request)
context.Output = beecontext.NewOutput(rw)
}
if !inSlice(strings.ToLower(r.Method), HTTPMETHOD) {
if !utils.InSlice(strings.ToLower(r.Method), HTTPMETHOD) {
http.Error(w, "Method Not Allowed", 405)
goto Admin
}

158
template.go
View File

@ -9,9 +9,10 @@ import (
"io/ioutil"
"os"
"path/filepath"
"reflect"
"regexp"
"strings"
"github.com/astaxie/beego/utils"
)
var (
@ -144,7 +145,7 @@ func getTplDeep(root, file, parent string, t *template.Template) (*template.Temp
} else {
fileabspath = filepath.Join(root, file)
}
if e, _ := FileExists(fileabspath); !e {
if e := utils.FileExists(fileabspath); !e {
panic("can't find template file" + file)
}
data, err := ioutil.ReadFile(fileabspath)
@ -238,156 +239,3 @@ func _getTemplate(t0 *template.Template, root string, submods [][]string, others
}
return
}
// go1.2 added template funcs. begin
var (
errBadComparisonType = errors.New("invalid type for comparison")
errBadComparison = errors.New("incompatible types for comparison")
errNoComparison = errors.New("missing argument for comparison")
)
type kind int
const (
invalidKind kind = iota
boolKind
complexKind
intKind
floatKind
integerKind
stringKind
uintKind
)
func basicKind(v reflect.Value) (kind, error) {
switch v.Kind() {
case reflect.Bool:
return boolKind, nil
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return intKind, nil
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
return uintKind, nil
case reflect.Float32, reflect.Float64:
return floatKind, nil
case reflect.Complex64, reflect.Complex128:
return complexKind, nil
case reflect.String:
return stringKind, nil
}
return invalidKind, errBadComparisonType
}
// eq evaluates the comparison a == b || a == c || ...
func eq(arg1 interface{}, arg2 ...interface{}) (bool, error) {
v1 := reflect.ValueOf(arg1)
k1, err := basicKind(v1)
if err != nil {
return false, err
}
if len(arg2) == 0 {
return false, errNoComparison
}
for _, arg := range arg2 {
v2 := reflect.ValueOf(arg)
k2, err := basicKind(v2)
if err != nil {
return false, err
}
if k1 != k2 {
return false, errBadComparison
}
truth := false
switch k1 {
case boolKind:
truth = v1.Bool() == v2.Bool()
case complexKind:
truth = v1.Complex() == v2.Complex()
case floatKind:
truth = v1.Float() == v2.Float()
case intKind:
truth = v1.Int() == v2.Int()
case stringKind:
truth = v1.String() == v2.String()
case uintKind:
truth = v1.Uint() == v2.Uint()
default:
panic("invalid kind")
}
if truth {
return true, nil
}
}
return false, nil
}
// ne evaluates the comparison a != b.
func ne(arg1, arg2 interface{}) (bool, error) {
// != is the inverse of ==.
equal, err := eq(arg1, arg2)
return !equal, err
}
// lt evaluates the comparison a < b.
func lt(arg1, arg2 interface{}) (bool, error) {
v1 := reflect.ValueOf(arg1)
k1, err := basicKind(v1)
if err != nil {
return false, err
}
v2 := reflect.ValueOf(arg2)
k2, err := basicKind(v2)
if err != nil {
return false, err
}
if k1 != k2 {
return false, errBadComparison
}
truth := false
switch k1 {
case boolKind, complexKind:
return false, errBadComparisonType
case floatKind:
truth = v1.Float() < v2.Float()
case intKind:
truth = v1.Int() < v2.Int()
case stringKind:
truth = v1.String() < v2.String()
case uintKind:
truth = v1.Uint() < v2.Uint()
default:
panic("invalid kind")
}
return truth, nil
}
// le evaluates the comparison <= b.
func le(arg1, arg2 interface{}) (bool, error) {
// <= is < or ==.
lessThan, err := lt(arg1, arg2)
if lessThan || err != nil {
return lessThan, err
}
return eq(arg1, arg2)
}
// gt evaluates the comparison a > b.
func gt(arg1, arg2 interface{}) (bool, error) {
// > is the inverse of <=.
lessOrEqual, err := le(arg1, arg2)
if err != nil {
return false, err
}
return !lessOrEqual, nil
}
// ge evaluates the comparison a >= b.
func ge(arg1, arg2 interface{}) (bool, error) {
// >= is the inverse of <.
lessThan, err := lt(arg1, arg2)
if err != nil {
return false, err
}
return !lessThan, nil
}
// go1.2 added template funcs. end

918
utils.go → templatefunc.go
View File

@ -1,409 +1,509 @@
package beego
import (
"crypto/rand"
"fmt"
"html/template"
"net/url"
"os"
"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("\\<style[\\S\\s]+?\\</style\\>")
src = re.ReplaceAllString(src, "")
//去除SCRIPT
re, _ = regexp.Compile("\\<script[\\S\\s]+?\\</script\\>")
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
}
var DatePatterns = []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
// time zone
"T", "MST",
"P", "-07:00",
"O", "-0700",
// RFC 2822
"r", time.RFC1123Z,
}
// Parse Date use PHP time format
func DateParse(dateString, format string) (time.Time, error) {
replacer := strings.NewReplacer(DatePatterns...)
format = replacer.Replace(format)
return time.ParseInLocation(format, dateString, time.Local)
}
// Date takes a PHP like date func to Go's time format
func Date(t time.Time, format string) string {
replacer := strings.NewReplacer(DatePatterns...)
format = replacer.Replace(format)
return t.Format(format)
}
// 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("<'&\\">")
'&lt;&#39;&amp;&quot;&gt;'
*/
text := string(src)
text = strings.Replace(text, "&", "&amp;", -1) // Must be done first!
text = strings.Replace(text, "<", "&lt;", -1)
text = strings.Replace(text, ">", "&gt;", -1)
text = strings.Replace(text, "'", "&#39;", -1)
text = strings.Replace(text, "\"", "&quot;", -1)
text = strings.Replace(text, "“", "&ldquo;", -1)
text = strings.Replace(text, "”", "&rdquo;", -1)
text = strings.Replace(text, " ", "&nbsp;", -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('&lt;&#39;&amp;&quot;&gt;')
'<\\'&">'
*/
// 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, "&nbsp;", " ", -1)
text = strings.Replace(text, "&rdquo;", "”", -1)
text = strings.Replace(text, "&ldquo;", "“", -1)
text = strings.Replace(text, "&quot;", "\"", -1)
text = strings.Replace(text, "&#39;", "'", -1)
text = strings.Replace(text, "&gt;", ">", -1)
text = strings.Replace(text, "&lt;", "<", -1)
text = strings.Replace(text, "&amp;", "&", -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 !isStructPtr(objT) {
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)
tags := strings.Split(fieldT.Tag.Get("form"), ",")
var tag string
if len(tags) == 0 || len(tags[0]) == 0 {
tag = fieldT.Name
} else if tags[0] == "-" {
continue
} else {
tag = tags[0]
}
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
}
// form types for RenderForm function
var FormType = map[string]bool{
"text": true,
"textarea": true,
"hidden": true,
"password": true,
}
var unKind = map[reflect.Kind]bool{
reflect.Uintptr: true,
reflect.Complex64: true,
reflect.Complex128: true,
reflect.Array: true,
reflect.Chan: true,
reflect.Func: true,
reflect.Map: true,
reflect.Ptr: true,
reflect.Slice: true,
reflect.Struct: true,
reflect.UnsafePointer: true,
}
// obj must be a struct pointer
func RenderForm(obj interface{}) template.HTML {
objT := reflect.TypeOf(obj)
objV := reflect.ValueOf(obj)
if !isStructPtr(objT) {
return template.HTML("")
}
objT = objT.Elem()
objV = objV.Elem()
var raw []string
for i := 0; i < objT.NumField(); i++ {
fieldV := objV.Field(i)
if !fieldV.CanSet() || unKind[fieldV.Kind()] {
continue
}
fieldT := objT.Field(i)
tags := strings.Split(fieldT.Tag.Get("form"), ",")
label := fieldT.Name + ": "
name := fieldT.Name
fType := "text"
switch len(tags) {
case 1:
if tags[0] == "-" {
continue
}
if len(tags[0]) > 0 {
name = tags[0]
}
case 2:
if len(tags[0]) > 0 {
name = tags[0]
}
if len(tags[1]) > 0 {
fType = tags[1]
}
case 3:
if len(tags[0]) > 0 {
name = tags[0]
}
if len(tags[1]) > 0 {
fType = tags[1]
}
if len(tags[2]) > 0 {
label = tags[2]
}
}
raw = append(raw, fmt.Sprintf(`%v<input name="%v" type="%v" value="%v">`,
label, name, fType, fieldV.Interface()))
}
return template.HTML(strings.Join(raw, "</br>"))
}
func isStructPtr(t reflect.Type) bool {
return t.Kind() == reflect.Ptr && t.Elem().Kind() == reflect.Struct
}
func stringsToJson(str string) string {
rs := []rune(str)
jsons := ""
for _, r := range rs {
rint := int(r)
if rint < 128 {
jsons += string(r)
} else {
jsons += "\\u" + strconv.FormatInt(int64(rint), 16) // json
}
}
return jsons
}
func FileExists(path string) (bool, error) {
_, err := os.Stat(path)
if err == nil {
return true, nil
}
if os.IsNotExist(err) {
return false, nil
}
return false, err
}
func GetRandomString(n int) string {
const alphanum = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
var bytes = make([]byte, n)
rand.Read(bytes)
for i, b := range bytes {
bytes[i] = alphanum[b%byte(len(alphanum))]
}
return string(bytes)
}
// This will reference the index function local to the current blueprint:
// UrlFor(".index")
// ... print UrlFor("index")
// ... print UrlFor("login")
// ... print UrlFor("login", "next","/"")
// ... print UrlFor("profile", "username","John Doe")
// ...
// /
// /login
// /login?next=/
// /user/John%20Doe
func UrlFor(endpoint string, values ...string) string {
return BeeApp.UrlFor(endpoint, values...)
}
//This can be changed to a better name
func AssetsJs(src string) template.HTML {
text := string(src)
text = "<script src=\""+src+"\"></script>"
return template.HTML(text)
}
//This can be changed to a better name
func AssetsCss(src string) template.HTML {
text := string(src)
text = "<link href=\""+src+"\" rel=\"stylesheet\" />"
return template.HTML(text)
}
package beego
import (
"errors"
"fmt"
"html/template"
"net/url"
"reflect"
"regexp"
"strconv"
"strings"
"time"
)
// Substr() return the substr from start to length
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("\\<style[\\S\\s]+?\\</style\\>")
src = re.ReplaceAllString(src, "")
//去除SCRIPT
re, _ = regexp.Compile("\\<script[\\S\\s]+?\\</script\\>")
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
}
var DatePatterns = []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
// time zone
"T", "MST",
"P", "-07:00",
"O", "-0700",
// RFC 2822
"r", time.RFC1123Z,
}
// Parse Date use PHP time format
func DateParse(dateString, format string) (time.Time, error) {
replacer := strings.NewReplacer(DatePatterns...)
format = replacer.Replace(format)
return time.ParseInLocation(format, dateString, time.Local)
}
// Date takes a PHP like date func to Go's time format
func Date(t time.Time, format string) string {
replacer := strings.NewReplacer(DatePatterns...)
format = replacer.Replace(format)
return t.Format(format)
}
// 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("<'&\\">")
'&lt;&#39;&amp;&quot;&gt;'
*/
text := string(src)
text = strings.Replace(text, "&", "&amp;", -1) // Must be done first!
text = strings.Replace(text, "<", "&lt;", -1)
text = strings.Replace(text, ">", "&gt;", -1)
text = strings.Replace(text, "'", "&#39;", -1)
text = strings.Replace(text, "\"", "&quot;", -1)
text = strings.Replace(text, "“", "&ldquo;", -1)
text = strings.Replace(text, "”", "&rdquo;", -1)
text = strings.Replace(text, " ", "&nbsp;", -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('&lt;&#39;&amp;&quot;&gt;')
'<\\'&">'
*/
// 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, "&nbsp;", " ", -1)
text = strings.Replace(text, "&rdquo;", "”", -1)
text = strings.Replace(text, "&ldquo;", "“", -1)
text = strings.Replace(text, "&quot;", "\"", -1)
text = strings.Replace(text, "&#39;", "'", -1)
text = strings.Replace(text, "&gt;", ">", -1)
text = strings.Replace(text, "&lt;", "<", -1)
text = strings.Replace(text, "&amp;", "&", -1) // Must be done last!
return strings.TrimSpace(text)
}
// This will reference the index function local to the current blueprint:
// UrlFor(".index")
// ... print UrlFor("index")
// ... print UrlFor("login")
// ... print UrlFor("login", "next","/"")
// ... print UrlFor("profile", "username","John Doe")
// ...
// /
// /login
// /login?next=/
// /user/John%20Doe
func UrlFor(endpoint string, values ...string) string {
return BeeApp.UrlFor(endpoint, values...)
}
//This can be changed to a better name
func AssetsJs(src string) template.HTML {
text := string(src)
text = "<script src=\"" + src + "\"></script>"
return template.HTML(text)
}
//This can be changed to a better name
func AssetsCss(src string) template.HTML {
text := string(src)
text = "<link href=\"" + src + "\" rel=\"stylesheet\" />"
return template.HTML(text)
}
// parse form values to struct via tag
func ParseForm(form url.Values, obj interface{}) error {
objT := reflect.TypeOf(obj)
objV := reflect.ValueOf(obj)
if !isStructPtr(objT) {
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)
tags := strings.Split(fieldT.Tag.Get("form"), ",")
var tag string
if len(tags) == 0 || len(tags[0]) == 0 {
tag = fieldT.Name
} else if tags[0] == "-" {
continue
} else {
tag = tags[0]
}
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
}
// form types for RenderForm function
var FormType = map[string]bool{
"text": true,
"textarea": true,
"hidden": true,
"password": true,
}
var unKind = map[reflect.Kind]bool{
reflect.Uintptr: true,
reflect.Complex64: true,
reflect.Complex128: true,
reflect.Array: true,
reflect.Chan: true,
reflect.Func: true,
reflect.Map: true,
reflect.Ptr: true,
reflect.Slice: true,
reflect.Struct: true,
reflect.UnsafePointer: true,
}
// obj must be a struct pointer
func RenderForm(obj interface{}) template.HTML {
objT := reflect.TypeOf(obj)
objV := reflect.ValueOf(obj)
if !isStructPtr(objT) {
return template.HTML("")
}
objT = objT.Elem()
objV = objV.Elem()
var raw []string
for i := 0; i < objT.NumField(); i++ {
fieldV := objV.Field(i)
if !fieldV.CanSet() || unKind[fieldV.Kind()] {
continue
}
fieldT := objT.Field(i)
tags := strings.Split(fieldT.Tag.Get("form"), ",")
label := fieldT.Name + ": "
name := fieldT.Name
fType := "text"
switch len(tags) {
case 1:
if tags[0] == "-" {
continue
}
if len(tags[0]) > 0 {
name = tags[0]
}
case 2:
if len(tags[0]) > 0 {
name = tags[0]
}
if len(tags[1]) > 0 {
fType = tags[1]
}
case 3:
if len(tags[0]) > 0 {
name = tags[0]
}
if len(tags[1]) > 0 {
fType = tags[1]
}
if len(tags[2]) > 0 {
label = tags[2]
}
}
raw = append(raw, fmt.Sprintf(`%v<input name="%v" type="%v" value="%v">`,
label, name, fType, fieldV.Interface()))
}
return template.HTML(strings.Join(raw, "</br>"))
}
func isStructPtr(t reflect.Type) bool {
return t.Kind() == reflect.Ptr && t.Elem().Kind() == reflect.Struct
}
// go1.2 added template funcs. begin
var (
errBadComparisonType = errors.New("invalid type for comparison")
errBadComparison = errors.New("incompatible types for comparison")
errNoComparison = errors.New("missing argument for comparison")
)
type kind int
const (
invalidKind kind = iota
boolKind
complexKind
intKind
floatKind
integerKind
stringKind
uintKind
)
func basicKind(v reflect.Value) (kind, error) {
switch v.Kind() {
case reflect.Bool:
return boolKind, nil
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
return intKind, nil
case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
return uintKind, nil
case reflect.Float32, reflect.Float64:
return floatKind, nil
case reflect.Complex64, reflect.Complex128:
return complexKind, nil
case reflect.String:
return stringKind, nil
}
return invalidKind, errBadComparisonType
}
// eq evaluates the comparison a == b || a == c || ...
func eq(arg1 interface{}, arg2 ...interface{}) (bool, error) {
v1 := reflect.ValueOf(arg1)
k1, err := basicKind(v1)
if err != nil {
return false, err
}
if len(arg2) == 0 {
return false, errNoComparison
}
for _, arg := range arg2 {
v2 := reflect.ValueOf(arg)
k2, err := basicKind(v2)
if err != nil {
return false, err
}
if k1 != k2 {
return false, errBadComparison
}
truth := false
switch k1 {
case boolKind:
truth = v1.Bool() == v2.Bool()
case complexKind:
truth = v1.Complex() == v2.Complex()
case floatKind:
truth = v1.Float() == v2.Float()
case intKind:
truth = v1.Int() == v2.Int()
case stringKind:
truth = v1.String() == v2.String()
case uintKind:
truth = v1.Uint() == v2.Uint()
default:
panic("invalid kind")
}
if truth {
return true, nil
}
}
return false, nil
}
// ne evaluates the comparison a != b.
func ne(arg1, arg2 interface{}) (bool, error) {
// != is the inverse of ==.
equal, err := eq(arg1, arg2)
return !equal, err
}
// lt evaluates the comparison a < b.
func lt(arg1, arg2 interface{}) (bool, error) {
v1 := reflect.ValueOf(arg1)
k1, err := basicKind(v1)
if err != nil {
return false, err
}
v2 := reflect.ValueOf(arg2)
k2, err := basicKind(v2)
if err != nil {
return false, err
}
if k1 != k2 {
return false, errBadComparison
}
truth := false
switch k1 {
case boolKind, complexKind:
return false, errBadComparisonType
case floatKind:
truth = v1.Float() < v2.Float()
case intKind:
truth = v1.Int() < v2.Int()
case stringKind:
truth = v1.String() < v2.String()
case uintKind:
truth = v1.Uint() < v2.Uint()
default:
panic("invalid kind")
}
return truth, nil
}
// le evaluates the comparison <= b.
func le(arg1, arg2 interface{}) (bool, error) {
// <= is < or ==.
lessThan, err := lt(arg1, arg2)
if lessThan || err != nil {
return lessThan, err
}
return eq(arg1, arg2)
}
// gt evaluates the comparison a > b.
func gt(arg1, arg2 interface{}) (bool, error) {
// > is the inverse of <=.
lessOrEqual, err := le(arg1, arg2)
if err != nil {
return false, err
}
return !lessOrEqual, nil
}
// ge evaluates the comparison a >= b.
func ge(arg1, arg2 interface{}) (bool, error) {
// >= is the inverse of <.
lessThan, err := lt(arg1, arg2)
if err != nil {
return false, err
}
return !lessThan, nil
}
// go1.2 added template funcs. end

22
utils_test.go → templatefunc_test.go
View File

@ -7,18 +7,6 @@ import (
"time"
)
func TestWebTime(t *testing.T) {
ts := "Fri, 26 Jul 2013 12:27:42 CST"
l, _ := time.LoadLocation("GST")
tt, _ := time.ParseInLocation(time.RFC1123, ts, l)
if ts != webTime(tt) {
t.Error("should be equal")
}
if "Fri, 26 Jul 2013 12:27:42 GMT" != webTime(tt.UTC()) {
t.Error("should be equal")
}
}
func TestSubstr(t *testing.T) {
s := `012345`
if Substr(s, 0, 2) != "01" {
@ -92,16 +80,6 @@ func TestHtmlunquote(t *testing.T) {
}
}
func TestInSlice(t *testing.T) {
sl := []string{"A", "b"}
if !inSlice("A", sl) {
t.Error("should be true")
}
if inSlice("B", sl) {
t.Error("should be false")
}
}
func TestParseForm(t *testing.T) {
type user struct {
Id int `form:"-"`

10
utils/slice.go Normal file
View File

@ -0,0 +1,10 @@
package utils
func InSlice(v string, sl []string) bool {
for _, vv := range sl {
if vv == v {
return true
}
}
return false
}

15
utils/slice_test.go Normal file
View File

@ -0,0 +1,15 @@
package utils
import (
"testing"
)
func TestInSlice(t *testing.T) {
sl := []string{"A", "b"}
if !InSlice("A", sl) {
t.Error("should be true")
}
if InSlice("B", sl) {
t.Error("should be false")
}
}