147 lines
3.2 KiB
Go
147 lines
3.2 KiB
Go
package backend_golang
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import (
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"archive/zip"
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"bufio"
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"errors"
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"io"
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"os"
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"os/exec"
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"path/filepath"
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"runtime"
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"strings"
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)
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func Cmd(args ...string) (string, error) {
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if runtime.GOOS == "windows" {
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_, err := os.Stat("cmd-helper.bat")
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if err != nil {
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if err := os.WriteFile("./cmd-helper.bat", []byte("start %*"), 0644); err != nil {
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return "", err
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}
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}
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cmdHelper, err := filepath.Abs("./cmd-helper")
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if err != nil {
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return "", err
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}
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cmd := exec.Command(cmdHelper, args...)
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out, err := cmd.CombinedOutput()
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if err != nil {
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return "", err
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}
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return string(out), nil
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} else {
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cmd := exec.Command(args[0], args[1:]...)
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err := cmd.Start()
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if err != nil {
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return "", err
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}
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cmd.Wait()
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return "", nil
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}
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}
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func GetPython() (string, error) {
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switch platform := runtime.GOOS; platform {
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case "windows":
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_, err := os.Stat("py310/python.exe")
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if err != nil {
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_, err := os.Stat("python-3.10.11-embed-amd64.zip")
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if err != nil {
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return "", errors.New("python zip not found")
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} else {
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err := Unzip("python-3.10.11-embed-amd64.zip", "py310")
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if err != nil {
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return "", errors.New("failed to unzip python")
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} else {
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return "py310/python.exe", nil
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}
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}
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} else {
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return "py310/python.exe", nil
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}
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case "darwin":
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return "python3", nil
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case "linux":
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return "python3", nil
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}
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return "", errors.New("unsupported OS")
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}
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func ChangeFileLine(filePath string, lineNumber int, newText string) error {
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file, err := os.OpenFile(filePath, os.O_RDWR, 0644)
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if err != nil {
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return err
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}
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defer file.Close()
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scanner := bufio.NewScanner(file)
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content := make([]string, 0)
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for scanner.Scan() {
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content = append(content, scanner.Text())
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}
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content[lineNumber-1] = newText
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newContent := strings.Join(content, "\n")
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err = file.Truncate(0)
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if err != nil {
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return err
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}
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_, err = file.Seek(0, io.SeekStart)
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if err != nil {
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return err
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}
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_, err = file.WriteString(newContent)
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if err != nil {
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return err
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}
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return nil
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}
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// https://gist.github.com/paulerickson/6d8650947ee4e3f3dbcc28fde10eaae7
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func Unzip(source, destination string) error {
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archive, err := zip.OpenReader(source)
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if err != nil {
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return err
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}
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defer archive.Close()
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for _, file := range archive.Reader.File {
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reader, err := file.Open()
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if err != nil {
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return err
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}
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defer reader.Close()
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path := filepath.Join(destination, file.Name)
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// Remove file if it already exists; no problem if it doesn't; other cases can error out below
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_ = os.Remove(path)
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// Create a directory at path, including parents
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err = os.MkdirAll(path, os.ModePerm)
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if err != nil {
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return err
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}
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// If file is _supposed_ to be a directory, we're done
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if file.FileInfo().IsDir() {
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continue
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}
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// otherwise, remove that directory (_not_ including parents)
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err = os.Remove(path)
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if err != nil {
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return err
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}
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// and create the actual file. This ensures that the parent directories exist!
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// An archive may have a single file with a nested path, rather than a file for each parent dir
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writer, err := os.OpenFile(path, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, file.Mode())
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if err != nil {
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return err
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}
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defer writer.Close()
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_, err = io.Copy(writer, reader)
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if err != nil {
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return err
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}
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}
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return nil
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}
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