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gitignore.go
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gitignore.go
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package xbindata
import (
"bufio"
"fmt"
"io"
"os"
"path/filepath"
"strings"
)
func gitIgnore(dir string, lines ...string) (err error) {
pth := filepath.Join(dir, ".gitignore")
if f, err := os.Open(pth); err == nil {
s, err := f.Stat()
if err != nil {
f.Close()
return err
}
var has = map[string]bool{}
err = func() error {
defer f.Close()
var r = bufio.NewReader(f)
var line []byte
for {
if line, _, err = r.ReadLine(); err == nil {
for _, l := range lines {
if string(line) == l {
has[l] = true
break
}
}
} else if err == io.EOF {
break
} else {
return fmt.Errorf("read %q gitignore failed: `%v`\n", pth, err)
}
}
return nil
}()
if err != nil {
return err
}
if len(has) < len(lines) {
if f, err = os.OpenFile(pth, os.O_APPEND|os.O_CREATE|os.O_WRONLY, s.Mode()); err != nil {
return err
}
func() {
defer f.Close()
for _, line := range lines {
if _, ok := has[line]; !ok {
if _, err = f.WriteString(line + "\n"); err != nil {
err = fmt.Errorf("add `%s` to gitignore failed: %v", line, err)
return
}
}
}
return
}()
if err != nil {
return err
}
}
} else if os.IsNotExist(err) {
if err = safefileWriteFile(pth, []byte(strings.Join(lines, "\n")+"\n"), 0); err != nil {
return err
}
}
return
}