refactor

pkg/commands/git_commands/file.go

@@ -0,0 +1,80 @@
+package git_commands
+
+import (
+	"io/ioutil"
+	"strconv"
+
+	"github.com/go-errors/errors"
+	"github.com/jesseduffield/lazygit/pkg/commands/oscommands"
+	"github.com/jesseduffield/lazygit/pkg/common"
+	"github.com/jesseduffield/lazygit/pkg/utils"
+)
+
+type FileCommands struct {
+	*common.Common
+
+	cmd    oscommands.ICmdObjBuilder
+	config *ConfigCommands
+	os     FileOSCommand
+}
+
+type FileOSCommand interface {
+	Getenv(string) string
+}
+
+func NewFileCommands(
+	common *common.Common,
+	cmd oscommands.ICmdObjBuilder,
+	config *ConfigCommands,
+	osCommand FileOSCommand,
+) *FileCommands {
+	return &FileCommands{
+		Common: common,
+		cmd:    cmd,
+		config: config,
+		os:     osCommand,
+	}
+}
+
+// Cat obtains the content of a file
+func (self *FileCommands) Cat(fileName string) (string, error) {
+	buf, err := ioutil.ReadFile(fileName)
+	if err != nil {
+		return "", nil
+	}
+	return string(buf), nil
+}
+
+func (self *FileCommands) GetEditCmdStr(filename string, lineNumber int) (string, error) {
+	editor := self.UserConfig.OS.EditCommand
+
+	if editor == "" {
+		editor = self.config.GetCoreEditor()
+	}
+	if editor == "" {
+		editor = self.os.Getenv("GIT_EDITOR")
+	}
+	if editor == "" {
+		editor = self.os.Getenv("VISUAL")
+	}
+	if editor == "" {
+		editor = self.os.Getenv("EDITOR")
+	}
+	if editor == "" {
+		if err := self.cmd.New("which vi").DontLog().Run(); err == nil {
+			editor = "vi"
+		}
+	}
+	if editor == "" {
+		return "", errors.New("No editor defined in config file, $GIT_EDITOR, $VISUAL, $EDITOR, or git config")
+	}
+
+	templateValues := map[string]string{
+		"editor":   editor,
+		"filename": self.cmd.Quote(filename),
+		"line":     strconv.Itoa(lineNumber),
+	}
+
+	editCmdTemplate := self.UserConfig.OS.EditCommandTemplate
+	return utils.ResolvePlaceholderString(editCmdTemplate, templateValues), nil
+}