/
upload.go
123 lines (102 loc) · 2.49 KB
/
upload.go
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package gos
import (
"errors"
"github.com/jiorry/libs/util"
"io"
"mime/multipart"
"os"
"strings"
)
type Upload struct {
parent interface{}
Ctx *Context
StorePath string
ExtAllowedList []string
}
func (this *Upload) Prepare(ct *Context, p interface{}) {
this.Ctx = ct
this.parent = p
}
func (this *Upload) Init() {
this.StorePath = "static/uploads"
}
func (this *Upload) DoUpload() {
}
func (this *Upload) ParseFormFile(field string) (*OriginFile, error) {
fn, header, err := this.Ctx.Request.FormFile(field)
defer fn.Close()
if err != nil {
return nil, err
}
if len(this.Ctx.Request.Form["token"]) == 0 {
return nil, errors.New("file token must be set!")
}
token := this.Ctx.Request.FormValue("token")
println(token)
return &OriginFile{FileName: header.Filename, File: fn, Token: token}, nil
}
func (this *Upload) ParseMultipartForm(field string) (*OriginFile, error) {
f := this.Ctx.Request.MultipartForm.File[field]
//v := this.Ctx.Request.MultipartForm.Value[this.NameField]
if len(f) == 0 {
return nil, errors.New("parameter is invalid!")
}
fileHeader := f[0]
file, err := fileHeader.Open()
if err != nil {
return nil, err
}
return &OriginFile{FileName: fileHeader.Filename, File: file}, nil
}
func (this *Upload) Build(origin *OriginFile) (*StoreFile, error) {
filename := origin.FileName
var name string
arr := strings.Split(filename, ".")
ext := ""
if len(arr) > 1 {
ext = strings.ToLower("." + arr[len(arr)-1])
name = filename[0 : len(filename)-len(ext)]
} else {
name = filename
}
if !util.InStringArray(this.ExtAllowedList, ext) {
return nil, errors.New("file " + ext + " is forbidden")
}
return &StoreFile{
StorePath: strings.TrimPrefix(this.StorePath, "/"),
StoreName: util.Unique(),
Ext: ext,
Name: name,
OriginFile: origin}, nil
}
type OriginFile struct {
FileName string
Token string
File multipart.File
}
type StoreFile struct {
Name string
Ext string
StorePath string
StoreName string
OriginFile *OriginFile
}
func (this *StoreFile) Store() error {
if !strings.HasSuffix(this.StorePath, "/") {
this.StorePath += "/"
}
file, err := os.Create(this.StorePath + this.StoreName + this.Ext)
if err != nil {
return err
}
defer file.Close()
io.Copy(file, this.OriginFile.File)
return nil
}
func (this *StoreFile) CreateFolderIfNotExists() {
if _, err := os.Stat(this.StorePath); err != nil {
if os.IsNotExist(err) {
os.Mkdir(this.StorePath, os.ModeDir)
}
}
}