cacert-boardvoting/boardvoting/main.go

159 lines
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2019-07-31 15:30:58 +00:00
/*
Copyright 2017-2019 Jan Dittberner
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this program except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package boardvoting
//go:generate go-bindata -pkg $GOPACKAGE -o assets.go ./migrations/... ./static/... ./templates/...
import (
"bytes"
"errors"
"io"
"io/ioutil"
"net/http"
"os"
"path/filepath"
"strings"
"time"
)
var defaultFileTimestamp = time.Now()
type AssetFS struct {
Asset func(path string) ([]byte, error)
AssetDir func(path string) ([]string, error)
AssetInfo func(path string) (os.FileInfo, error)
}
type FakeFile struct {
Path string
Dir bool
Len int64
Timestamp time.Time
}
func (f *FakeFile) Name() string {
_, name := filepath.Split(f.Path)
return name
}
func (f *FakeFile) Size() int64 { return f.Len }
func (f *FakeFile) Mode() os.FileMode {
mode := os.FileMode(0644)
if f.Dir {
return mode | os.ModeDir
}
return mode
}
func (f *FakeFile) ModTime() time.Time { return f.Timestamp }
func (f *FakeFile) IsDir() bool { return f.Dir }
func (f *FakeFile) Sys() interface{} { return nil }
type AssetFile struct {
*bytes.Reader
io.Closer
FakeFile
}
func NewAssetFile(name string, content []byte, timestamp time.Time) *AssetFile {
if timestamp.IsZero() {
timestamp = defaultFileTimestamp
}
return &AssetFile{
bytes.NewReader(content),
ioutil.NopCloser(nil),
FakeFile{name, false, int64(len(content)), timestamp},
}
}
func (f *AssetFile) Readdir(count int) ([]os.FileInfo, error) {
return nil, errors.New("not a directory")
}
func (f *AssetFile) Size() int64 {
return f.FakeFile.Size()
}
func (f *AssetFile) Stat() (os.FileInfo, error) {
return f, nil
}
type AssetDirectory struct {
AssetFile
ChildrenRead int
Children []os.FileInfo
}
func (f *AssetDirectory) Readdir(count int) ([]os.FileInfo, error) {
if count <= 0 {
return f.Children, nil
}
if f.ChildrenRead+count > len(f.Children) {
count = len(f.Children) - f.ChildrenRead
}
rv := f.Children[f.ChildrenRead : f.ChildrenRead+count]
f.ChildrenRead += count
return rv, nil
}
func (f *AssetDirectory) Stat() (os.FileInfo, error) {
return f, nil
}
func NewAssetDirectory(name string, children []string, fs *AssetFS) *AssetDirectory {
fileInfos := make([]os.FileInfo, 0, len(children))
for _, child := range children {
_, err := fs.AssetDir(filepath.Join(name, child))
fileInfos = append(fileInfos, &FakeFile{child, err == nil, 0, time.Time{}})
}
return &AssetDirectory{
AssetFile{
bytes.NewReader(nil),
ioutil.NopCloser(nil),
FakeFile{name, true, 0, time.Time{}},
},
0,
fileInfos}
}
func (f *AssetFS) Open(name string) (http.File, error) {
if len(name) > 0 && name[0] == '/' {
name = name[1:]
}
if b, err := f.Asset(name); err == nil {
timestamp := defaultFileTimestamp
if f.AssetInfo != nil {
if info, err := f.AssetInfo(name); err == nil {
timestamp = info.ModTime()
}
}
return NewAssetFile(name, b, timestamp), nil
}
if children, err := f.AssetDir(name); err == nil {
return NewAssetDirectory(name, children, f), nil
} else {
if strings.Contains(err.Error(), "not found") {
return nil, os.ErrNotExist
}
return nil, err
}
}
func GetAssetFS() *AssetFS {
return &AssetFS{Asset: Asset, AssetDir: AssetDir, AssetInfo: AssetInfo}
}