forked from google/gousb
/
load.go
75 lines (63 loc) · 1.87 KB
/
load.go
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// Copyright 2013 Google Inc. All rights reserved.
// Copyright 2016 the gousb Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file 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 usbid
import (
"log"
"net/http"
"strings"
"time"
"github.com/google/gousb"
)
const (
// LinuxUsbDotOrg is one source of files in the format used by this package.
LinuxUsbDotOrg = "http://www.linux-usb.org/usb.ids"
)
var (
// Vendors stores the vendor and product ID mappings.
Vendors map[gousb.ID]*Vendor
// Classes stores the class, subclass and protocol mappings.
Classes map[gousb.Class]*Class
)
// LoadFromURL replaces the built-in vendor and class mappings with ones loaded
// from the given URL.
//
// This should usually only be necessary if the mappings in the library are
// stale. The contents of this file as of February 2012 are embedded in the
// library itself.
func LoadFromURL(url string) error {
resp, err := http.Get(url)
if err != nil {
return err
}
defer resp.Body.Close()
ids, cls, err := ParseIDs(resp.Body)
if err != nil {
return err
}
Vendors = ids
Classes = cls
LastUpdate = time.Now()
return nil
}
//go:generate go run regen/regen.go --template regen/load_data.go.tpl -o load_data.go
func init() {
ids, cls, err := ParseIDs(strings.NewReader(usbIDListData))
if err != nil {
log.Printf("usbid: failed to parse: %s", err)
return
}
Vendors = ids
Classes = cls
}