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new.go
205 lines (174 loc) · 5.09 KB
/
new.go
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package main
import (
"fmt"
"os"
"os/exec"
"path/filepath"
"strings"
"github.com/spf13/cobra"
)
var newCmd = &cobra.Command{
Use: "new [flags] <project name>",
Short: "creates a project directory of the name supplied as a parameter",
Long: `Creates a project directory of the name supplied as a parameter
immediately following the 'new' option in the $GOPATH/src directory. Note:
'new' depends on the program 'git' and possibly a network connection. If
there is no local repository to clone from at the local machine's $GOPATH,
'new' will attempt to clone the 'github.com/ponzu-cms/ponzu' package from
over the network.`,
Example: `$ ponzu new github.com/nilslice/proj
> New ponzu project created at $GOPATH/src/github.com/nilslice/proj`,
RunE: func(cmd *cobra.Command, args []string) error {
projectName := "ponzu"
if len(args) > 0 {
projectName = args[0]
} else {
msg := "Please provide a project name."
msg += "\nThis will create a directory within your $GOPATH/src."
return fmt.Errorf("%s", msg)
}
return newProjectInDir(projectName)
},
}
// name2path transforns a project name to an absolute path
func name2path(projectName string) (string, error) {
gopath, err := getGOPATH()
if err != nil {
return "", err
}
gosrc := filepath.Join(gopath, "src")
path := projectName
// support current directory
if path == "." {
path, err = os.Getwd()
if err != nil {
return "", err
}
} else {
path = filepath.Join(gosrc, path)
}
// make sure path is inside $GOPATH/src
srcrel, err := filepath.Rel(gosrc, path)
if err != nil {
return "", err
}
if len(srcrel) >= 2 && srcrel[:2] == ".." {
return "", fmt.Errorf("path '%s' must be inside '%s'", projectName, gosrc)
}
if srcrel == "." {
return "", fmt.Errorf("path '%s' must not be %s", path, filepath.Join("GOPATH", "src"))
}
_, err = os.Stat(path)
if err != nil && !os.IsNotExist(err) {
return "", err
}
if err == nil {
err = os.ErrExist
} else if os.IsNotExist(err) {
err = nil
}
return path, err
}
func newProjectInDir(path string) error {
path, err := name2path(path)
if err != nil && !os.IsNotExist(err) {
return err
}
// path exists, ask if it should be overwritten
if os.IsNotExist(err) {
fmt.Printf("Using '%s' as project directory\n", path)
fmt.Println("Path exists, overwrite contents? (y/N):")
answer, err := getAnswer()
if err != nil {
return err
}
switch answer {
case "n", "no", "\r\n", "\n", "":
fmt.Println("")
case "y", "yes":
err := os.RemoveAll(path)
if err != nil {
return fmt.Errorf("Failed to overwrite %s. \n%s", path, err)
}
return createProjectInDir(path)
default:
fmt.Println("Input not recognized. No files overwritten. Answer as 'y' or 'n' only.")
}
return nil
}
return createProjectInDir(path)
}
func createProjectInDir(path string) error {
gopath, err := getGOPATH()
if err != nil {
return err
}
repo := ponzuRepo
local := filepath.Join(gopath, "src", filepath.Join(repo...))
network := "https://" + strings.Join(repo, "/") + ".git"
if !strings.HasPrefix(path, gopath) {
path = filepath.Join(gopath, path)
}
// create the directory or overwrite it
err = os.MkdirAll(path, os.ModeDir|os.ModePerm)
if err != nil {
return err
}
if dev {
if fork != "" {
local = filepath.Join(gopath, "src", fork)
}
err = execAndWait("git", "clone", local, "--branch", "ponzu-dev", "--single-branch", path)
if err != nil {
return err
}
err = vendorCorePackages(path)
if err != nil {
return err
}
fmt.Println("Dev build cloned from " + local + ":ponzu-dev")
return nil
}
// try to git clone the repository from the local machine's $GOPATH
err = execAndWait("git", "clone", local, path)
if err != nil {
fmt.Println("Couldn't clone from", local, "- trying network...")
// try to git clone the repository over the network
networkClone := exec.Command("git", "clone", network, path)
networkClone.Stdout = os.Stdout
networkClone.Stderr = os.Stderr
err = networkClone.Start()
if err != nil {
fmt.Println("Network clone failed to start. Try again and make sure you have a network connection.")
return err
}
err = networkClone.Wait()
if err != nil {
fmt.Println("Network clone failure.")
// failed
return fmt.Errorf("Failed to clone files from local machine [%s] and over the network [%s].\n%s", local, network, err)
}
}
// create an internal vendor directory in ./cmd/ponzu and move content,
// management and system packages into it
err = vendorCorePackages(path)
if err != nil {
return err
}
// remove non-project files and directories
rmPaths := []string{".git", ".circleci"}
for _, rm := range rmPaths {
dir := filepath.Join(path, rm)
err = os.RemoveAll(dir)
if err != nil {
fmt.Println("Failed to remove directory from your project path. Consider removing it manually:", dir)
}
}
fmt.Println("New ponzu project created at", path)
return nil
}
func init() {
newCmd.Flags().StringVar(&fork, "fork", "", "modify repo source for Ponzu core development")
newCmd.Flags().BoolVar(&dev, "dev", false, "modify environment for Ponzu core development")
RegisterCmdlineCommand(newCmd)
}