68 lines
1.1 KiB
Go
68 lines
1.1 KiB
Go
package multipart
|
|
|
|
import (
|
|
"bufio"
|
|
"fmt"
|
|
"io"
|
|
"log"
|
|
"net/http"
|
|
)
|
|
|
|
// CreateReader creates a new multipart reader from an http.Request
|
|
func CreateReader(req *http.Request) *Reader {
|
|
|
|
/* (1) extract boundary */
|
|
boundary := req.Header.Get("Content-Type")[len("multipart/form-data; boundary="):]
|
|
boundary = fmt.Sprintf("--%s", boundary)
|
|
|
|
/* (2) init reader */
|
|
i := &Reader{
|
|
reader: bufio.NewReader(req.Body),
|
|
boundary: boundary,
|
|
Components: make(map[string]*Component),
|
|
}
|
|
|
|
/* (3) Place reader cursor after first boundary */
|
|
var (
|
|
err error
|
|
line []byte
|
|
)
|
|
|
|
for err == nil && string(line) != boundary {
|
|
line, _, err = i.reader.ReadLine()
|
|
}
|
|
|
|
return i
|
|
|
|
}
|
|
|
|
// Parse parses the multipart components from the request
|
|
func (i *Reader) Parse() error {
|
|
|
|
/* (1) For each component (until boundary) */
|
|
for {
|
|
|
|
// 1. Read component
|
|
component, err := i.readComponent()
|
|
|
|
// 2. Stop at EOF
|
|
if err == io.EOF {
|
|
return nil
|
|
}
|
|
|
|
// 3. Dispatch error
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// 4. parse component
|
|
err = i.parseComponent(component)
|
|
|
|
if err != nil {
|
|
log.Printf("%s\n", err)
|
|
}
|
|
|
|
}
|
|
|
|
}
|