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files.go
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files.go
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package util
import (
"context"
"fmt"
"io"
"io/ioutil"
"net/http"
"os"
"strings"
)
func CreateFileFromStdin() (*os.File, error) {
var specifiedFile *os.File
data, err := ioutil.ReadAll(os.Stdin)
if err != nil {
return nil, err
}
specifiedFile, err = ioutil.TempFile("", "rhoas-std-input")
if err != nil {
return nil, err
}
_, err = (*specifiedFile).Write(data)
if err != nil {
return nil, err
}
_, err = (*specifiedFile).Seek(0, io.SeekStart)
if err != nil {
return nil, err
}
return specifiedFile, nil
}
// IsURL accepts a string and determines if it is a URL
func IsURL(s string) bool {
return strings.HasPrefix(s, "http:/") || strings.HasPrefix(s, "https:/")
}
// GetContentFromFileURL loads file content from the provided URL
func GetContentFromFileURL(ctx context.Context, url string) (*os.File, error) {
req, err := http.NewRequestWithContext(ctx, "GET", url, nil)
if err != nil {
return nil, err
}
client := http.DefaultClient
resp, err := client.Do(req)
if err != nil {
return nil, err
}
if resp.StatusCode != http.StatusOK {
return nil, fmt.Errorf("error loading file: %s", http.StatusText(resp.StatusCode))
}
data, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, err
}
defer resp.Body.Close()
tmpfile, err := ioutil.TempFile("", "rhoas-std-input")
if err != nil {
return nil, fmt.Errorf("error initializing temporary file: %w", err)
}
_, err = (*tmpfile).Write(data)
if err != nil {
return nil, err
}
_, err = (*tmpfile).Seek(0, io.SeekStart)
if err != nil {
return nil, err
}
return tmpfile, nil
}