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|
package main
import (
"bytes"
"flag"
"fmt"
"go/ast"
"go/parser"
"go/token"
"io"
"io/ioutil"
"os"
"path/filepath"
"strings"
"sync"
)
func BuildUnfocusCommand() *Command {
return &Command{
Name: "unfocus",
AltName: "blur",
FlagSet: flag.NewFlagSet("unfocus", flag.ExitOnError),
UsageCommand: "ginkgo unfocus (or ginkgo blur)",
Usage: []string{
"Recursively unfocuses any focused tests under the current directory",
},
Command: unfocusSpecs,
}
}
func unfocusSpecs([]string, []string) {
fmt.Println("Scanning for focus...")
goFiles := make(chan string)
go func() {
unfocusDir(goFiles, ".")
close(goFiles)
}()
const workers = 10
wg := sync.WaitGroup{}
wg.Add(workers)
for i := 0; i < workers; i++ {
go func() {
for path := range goFiles {
unfocusFile(path)
}
wg.Done()
}()
}
wg.Wait()
}
func unfocusDir(goFiles chan string, path string) {
files, err := ioutil.ReadDir(path)
if err != nil {
fmt.Println(err.Error())
return
}
for _, f := range files {
switch {
case f.IsDir() && shouldProcessDir(f.Name()):
unfocusDir(goFiles, filepath.Join(path, f.Name()))
case !f.IsDir() && shouldProcessFile(f.Name()):
goFiles <- filepath.Join(path, f.Name())
}
}
}
func shouldProcessDir(basename string) bool {
return basename != "vendor" && !strings.HasPrefix(basename, ".")
}
func shouldProcessFile(basename string) bool {
return strings.HasSuffix(basename, ".go")
}
func unfocusFile(path string) {
data, err := ioutil.ReadFile(path)
if err != nil {
fmt.Printf("error reading file '%s': %s\n", path, err.Error())
return
}
ast, err := parser.ParseFile(token.NewFileSet(), path, bytes.NewReader(data), 0)
if err != nil {
fmt.Printf("error parsing file '%s': %s\n", path, err.Error())
return
}
eliminations := scanForFocus(ast)
if len(eliminations) == 0 {
return
}
fmt.Printf("...updating %s\n", path)
backup, err := writeBackup(path, data)
if err != nil {
fmt.Printf("error creating backup file: %s\n", err.Error())
return
}
if err := updateFile(path, data, eliminations); err != nil {
fmt.Printf("error writing file '%s': %s\n", path, err.Error())
return
}
os.Remove(backup)
}
func writeBackup(path string, data []byte) (string, error) {
t, err := ioutil.TempFile(filepath.Dir(path), filepath.Base(path))
if err != nil {
return "", fmt.Errorf("error creating temporary file: %w", err)
}
defer t.Close()
if _, err := io.Copy(t, bytes.NewReader(data)); err != nil {
return "", fmt.Errorf("error writing to temporary file: %w", err)
}
return t.Name(), nil
}
func updateFile(path string, data []byte, eliminations []int64) error {
to, err := os.Create(path)
if err != nil {
return fmt.Errorf("error opening file for writing '%s': %w\n", path, err)
}
defer to.Close()
from := bytes.NewReader(data)
var cursor int64
for _, byteToEliminate := range eliminations {
if _, err := io.CopyN(to, from, byteToEliminate-cursor); err != nil {
return fmt.Errorf("error copying data: %w", err)
}
cursor = byteToEliminate + 1
if _, err := from.Seek(1, io.SeekCurrent); err != nil {
return fmt.Errorf("error seeking to position in buffer: %w", err)
}
}
if _, err := io.Copy(to, from); err != nil {
return fmt.Errorf("error copying end data: %w", err)
}
return nil
}
func scanForFocus(file *ast.File) (eliminations []int64) {
ast.Inspect(file, func(n ast.Node) bool {
if c, ok := n.(*ast.CallExpr); ok {
if i, ok := c.Fun.(*ast.Ident); ok {
if isFocus(i.Name) {
eliminations = append(eliminations, int64(i.Pos()-file.Pos()))
}
}
}
return true
})
return eliminations
}
func isFocus(name string) bool {
switch name {
case "FDescribe", "FContext", "FIt", "FMeasure", "FDescribeTable", "FEntry", "FSpecify", "FWhen":
return true
default:
return false
}
}
|
