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package edit
import (
"bytes"
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"net/http"
"path/filepath"
"sort"
"strings"
"github.com/AlecAivazis/survey/v2"
"github.com/cli/cli/v2/api"
"github.com/cli/cli/v2/internal/config"
"github.com/cli/cli/v2/pkg/cmd/gist/shared"
"github.com/cli/cli/v2/pkg/cmdutil"
"github.com/cli/cli/v2/pkg/iostreams"
"github.com/cli/cli/v2/pkg/prompt"
"github.com/cli/cli/v2/pkg/surveyext"
"github.com/spf13/cobra"
)
type EditOptions struct {
IO *iostreams.IOStreams
HttpClient func() (*http.Client, error)
Config func() (config.Config, error)
Edit func(string, string, string, *iostreams.IOStreams) (string, error)
Selector string
EditFilename string
AddFilename string
}
func NewCmdEdit(f *cmdutil.Factory, runF func(*EditOptions) error) *cobra.Command {
opts := EditOptions{
IO: f.IOStreams,
HttpClient: f.HttpClient,
Config: f.Config,
Edit: func(editorCmd, filename, defaultContent string, io *iostreams.IOStreams) (string, error) {
return surveyext.Edit(
editorCmd,
"*."+filename,
defaultContent,
io.In, io.Out, io.ErrOut, nil)
},
}
cmd := &cobra.Command{
Use: "edit {<id> | <url>}",
Short: "Edit one of your gists",
Args: cmdutil.ExactArgs(1, "cannot edit: gist argument required"),
RunE: func(c *cobra.Command, args []string) error {
opts.Selector = args[0]
if runF != nil {
return runF(&opts)
}
return editRun(&opts)
},
}
cmd.Flags().StringVarP(&opts.AddFilename, "add", "a", "", "Add a new file to the gist")
cmd.Flags().StringVarP(&opts.EditFilename, "filename", "f", "", "Select a file to edit")
return cmd
}
func editRun(opts *EditOptions) error {
gistID := opts.Selector
if strings.Contains(gistID, "/") {
id, err := shared.GistIDFromURL(gistID)
if err != nil {
return err
}
gistID = id
}
client, err := opts.HttpClient()
if err != nil {
return err
}
apiClient := api.NewClientFromHTTP(client)
cfg, err := opts.Config()
if err != nil {
return err
}
host, err := cfg.DefaultHost()
if err != nil {
return err
}
gist, err := shared.GetGist(client, host, gistID)
if err != nil {
if errors.Is(err, shared.NotFoundErr) {
return fmt.Errorf("gist not found: %s", gistID)
}
return err
}
username, err := api.CurrentLoginName(apiClient, host)
if err != nil {
return err
}
if username != gist.Owner.Login {
return fmt.Errorf("You do not own this gist.")
}
if opts.AddFilename != "" {
files, err := getFilesToAdd(opts.AddFilename)
if err != nil {
return err
}
gist.Files = files
return updateGist(apiClient, host, gist)
}
filesToUpdate := map[string]string{}
for {
filename := opts.EditFilename
candidates := []string{}
for filename := range gist.Files {
candidates = append(candidates, filename)
}
sort.Strings(candidates)
if filename == "" {
if len(candidates) == 1 {
filename = candidates[0]
} else {
if !opts.IO.CanPrompt() {
return errors.New("unsure what file to edit; either specify --filename or run interactively")
}
err = prompt.SurveyAskOne(&survey.Select{
Message: "Edit which file?",
Options: candidates,
}, &filename)
if err != nil {
return fmt.Errorf("could not prompt: %w", err)
}
}
}
gistFile, found := gist.Files[filename]
if !found {
return fmt.Errorf("gist has no file %q", filename)
}
if shared.IsBinaryContents([]byte(gistFile.Content)) {
return fmt.Errorf("editing binary files not supported")
}
editorCommand, err := cmdutil.DetermineEditor(opts.Config)
if err != nil {
return err
}
text, err := opts.Edit(editorCommand, filename, gistFile.Content, opts.IO)
if err != nil {
return err
}
if text != gistFile.Content {
gistFile.Content = text // so it appears if they re-edit
filesToUpdate[filename] = text
}
if !opts.IO.CanPrompt() {
break
}
if len(candidates) == 1 {
break
}
choice := ""
err = prompt.SurveyAskOne(&survey.Select{
Message: "What next?",
Options: []string{
"Edit another file",
"Submit",
"Cancel",
},
}, &choice)
if err != nil {
return fmt.Errorf("could not prompt: %w", err)
}
stop := false
switch choice {
case "Edit another file":
continue
case "Submit":
stop = true
case "Cancel":
return cmdutil.CancelError
}
if stop {
break
}
}
if len(filesToUpdate) == 0 {
return nil
}
err = updateGist(apiClient, host, gist)
if err != nil {
return err
}
return nil
}
func updateGist(apiClient *api.Client, hostname string, gist *shared.Gist) error {
body := shared.Gist{
Description: gist.Description,
Files: gist.Files,
}
path := "gists/" + gist.ID
requestByte, err := json.Marshal(body)
if err != nil {
return err
}
requestBody := bytes.NewReader(requestByte)
result := shared.Gist{}
err = apiClient.REST(hostname, "POST", path, requestBody, &result)
if err != nil {
return err
}
return nil
}
func getFilesToAdd(file string) (map[string]*shared.GistFile, error) {
isBinary, err := shared.IsBinaryFile(file)
if err != nil {
return nil, fmt.Errorf("failed to read file %s: %w", file, err)
}
if isBinary {
return nil, fmt.Errorf("failed to upload %s: binary file not supported", file)
}
content, err := ioutil.ReadFile(file)
if err != nil {
return nil, fmt.Errorf("failed to read file %s: %w", file, err)
}
if len(content) == 0 {
return nil, errors.New("file contents cannot be empty")
}
filename := filepath.Base(file)
return map[string]*shared.GistFile{
filename: {
Filename: filename,
Content: string(content),
},
}, nil
}