go-mastodon/helper.go

59 lines
1.3 KiB
Go
Raw Normal View History

2017-04-15 19:00:30 +02:00
package mastodon
import (
"encoding/base64"
2017-04-19 07:32:53 +02:00
"encoding/json"
"errors"
"fmt"
2017-04-15 19:00:30 +02:00
"net/http"
"os"
)
// Base64EncodeFileName returns the base64 data URI format string of the file with the file name.
2017-04-15 19:00:30 +02:00
func Base64EncodeFileName(filename string) (string, error) {
file, err := os.Open(filename)
if err != nil {
return "", err
}
defer file.Close()
return Base64Encode(file)
}
// Base64Encode returns the base64 data URI format string of the file.
2017-04-15 19:00:30 +02:00
func Base64Encode(file *os.File) (string, error) {
fi, err := file.Stat()
if err != nil {
return "", err
}
d := make([]byte, fi.Size())
_, err = file.Read(d)
if err != nil {
return "", err
}
return "data:" + http.DetectContentType(d) +
";base64," + base64.StdEncoding.EncodeToString(d), nil
}
2017-05-04 14:56:54 +02:00
// Int64 is a helper function to get the pointer value of a int64.
func Int64(v int64) *int64 { return &v }
2017-04-15 19:00:30 +02:00
// String is a helper function to get the pointer value of a string.
func String(v string) *string { return &v }
2017-04-19 07:32:53 +02:00
func parseAPIError(prefix string, resp *http.Response) error {
errMsg := fmt.Sprintf("%s: %s", prefix, resp.Status)
var e struct {
Error string `json:"error"`
}
json.NewDecoder(resp.Body).Decode(&e)
if e.Error != "" {
errMsg = fmt.Sprintf("%s: %s", errMsg, e.Error)
}
return errors.New(errMsg)
}