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package http2curl
import (
"bytes"
"fmt"
"io"
"io/ioutil"
"net/http"
"sort"
"strings"
)
// CurlCommand contains exec.Command compatible slice + helpers
type CurlCommand struct {
slice []string
}
// append appends a string to the CurlCommand
func (c *CurlCommand) append(newSlice ...string) {
c.slice = append(c.slice, newSlice...)
}
// String returns a ready to copy/paste command
func (c *CurlCommand) String() string {
return strings.Join(c.slice, " ")
}
// nopCloser is used to create a new io.ReadCloser for req.Body
type nopCloser struct {
io.Reader
}
func bashEscape(str string) string {
return `'` + strings.Replace(str, `'`, `'\''`, -1) + `'`
}
func (nopCloser) Close() error { return nil }
// GetCurlCommand returns a CurlCommand corresponding to an http.Request
func GetCurlCommand(req *http.Request) (*CurlCommand, error) {
command := CurlCommand{}
command.append("curl")
command.append("-X", bashEscape(req.Method))
if req.Body != nil {
body, err := ioutil.ReadAll(req.Body)
if err != nil {
return nil, err
}
req.Body = nopCloser{bytes.NewBuffer(body)}
bodyEscaped := bashEscape(string(body))
command.append("-d", bodyEscaped)
}
var keys []string
for k := range req.Header {
keys = append(keys, k)
}
sort.Strings(keys)
for _, k := range keys {
command.append("-H", bashEscape(fmt.Sprintf("%s: %s", k, strings.Join(req.Header[k], " "))))
}
command.append(bashEscape(req.URL.String()))
return &command, nil
}
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