/
getters.go
91 lines (74 loc) · 1.5 KB
/
getters.go
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package ipfs
import (
"fmt"
"io"
"net/http"
"os"
"strings"
"github.com/gnames/gnsys"
)
type GetterFile struct{}
func (gf GetterFile) Get(source, dest string) error {
var src, dst *os.File
exists, err := gnsys.FileExists(source)
if !exists {
return fmt.Errorf("file '%s' does not exist", source)
}
if err == nil {
src, err = os.Open(source)
}
if err == nil {
defer src.Close()
dst, err = os.Create(dest)
}
if err == nil {
defer dst.Close()
_, err = io.Copy(dst, src)
}
return err
}
type GetterHTTP struct{}
func (gh GetterHTTP) Get(source, dest string) (err error) {
resp, err := http.Get(source)
if err != nil {
return err
}
defer resp.Body.Close()
dst, err := os.Create(dest)
if err != nil {
return err
}
defer dst.Close()
_, err = io.Copy(dst, resp.Body)
return err
}
func isFile(s string) bool {
res, err := gnsys.FileExists(s)
if err != nil {
return false
}
return res
}
func isURL(s string) bool {
res := strings.HasPrefix(s, "https://") || strings.HasPrefix(s, "http://")
return res
}
func isPathIPNS(s string) bool {
res := strings.HasPrefix(s, "/ipns/")
return res
}
func isKeyIPNS(s string) bool {
res := len(s) > 40 && strings.HasPrefix(s, "k5") &&
!strings.Contains(s, "/\\")
return res
}
func isPathIPFS(s string) bool {
res := len(s) > 40 && strings.HasPrefix(s, "/ipfs/")
return res
}
func isCID(s string) bool {
res := len(s) > 40 &&
strings.HasPrefix(s, "Qm") || strings.HasPrefix(s, "baf") &&
!strings.Contains(s, "/\\")
return res
}