/
tmp_dir.go
90 lines (75 loc) · 2.37 KB
/
tmp_dir.go
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// Copyright © 2018 Wolfy-J <wolfy.jd@gmail.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package lib
import (
"fmt"
"github.com/wolfy-j/goffli/utils"
"github.com/yuin/gopher-lua"
"io/ioutil"
"os"
)
type tmpDir string
// newTmpDir allocates new temporary directory
func newTmpDir() tmpDir {
dir, err := ioutil.TempDir(os.TempDir(), "goffli")
if err != nil {
panic(err)
}
return tmpDir(dir)
}
// luaModule returns new t module initializer
func (t tmpDir) luaModule(l *lua.LState) int {
l.Push(l.SetFuncs(l.NewTable(), map[string]lua.LGFunction{
"dir": t.dir,
"file": t.file,
}))
return 1
}
// dir returns temporary dir associated with the process.
func (t tmpDir) dir(l *lua.LState) int {
l.Push(lua.LString(string(t)))
return 1
}
// file returns new temp file name within temp directory.
func (t tmpDir) file(l *lua.LState) int {
ext := l.OptString(1, "tmp")
path := ""
for i := 0; i < 100; i++ {
path = fmt.Sprintf("%s%s%s.%s", string(t), string(os.PathSeparator), utils.RandString(10), ext)
f, err := os.OpenFile(path, os.O_RDWR|os.O_CREATE|os.O_EXCL, 0600)
if os.IsExist(err) {
path = ""
continue
} else {
f.Close()
break
}
}
if path == "" {
return 0
}
utils.Log("tmp", path)
l.Push(lua.LString(path))
return 1
}
// Clean removes all temp files from tmpDir dir.
func (t tmpDir) Clean() {
os.RemoveAll(string(t))
}