forked from google/gousb
/
regen.go
103 lines (88 loc) · 2.55 KB
/
regen.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 main
import (
"bytes"
"flag"
"io/ioutil"
"log"
"net/http"
"os"
"text/template"
"time"
"github.com/google/gousb/usbid"
)
var (
remote = flag.String("url", usbid.LinuxUsbDotOrg, "URL from which to download new vendor data")
dataFile = flag.String("template", "load_data.go.tpl", "Template filename")
outFile = flag.String("o", "load_data.go", "Output filename")
)
func main() {
flag.Parse()
log.Printf("Fetching %q...", *remote)
resp, err := http.Get(*remote)
if err != nil {
log.Fatalf("failed to download from %q: %s", *remote, err)
}
defer resp.Body.Close()
data, err := ioutil.ReadAll(resp.Body)
if err != nil {
log.Fatalf("failed to read %q: %s", *remote, err)
}
ids, cls, err := usbid.ParseIDs(bytes.NewReader(data))
if err != nil {
log.Fatalf("failed to parse %q: %s", *remote, err)
}
log.Printf("Successfully fetched %q:", *remote)
log.Printf(" Loaded %d Vendor IDs", len(ids))
log.Printf(" Loaded %d Class IDs", len(cls))
rawTemplate, err := ioutil.ReadFile(*dataFile)
if err != nil {
log.Fatalf("failed to read template %q: %s", *dataFile, err)
}
template, err := template.New("").Parse(string(rawTemplate))
if err != nil {
log.Fatalf("failed to parse template %q: %s", *dataFile, err)
}
out, err := os.Create(*outFile)
if err != nil {
log.Fatalf("failed to open output file %q: %s", *outFile, err)
}
defer out.Close()
templateData := struct {
Data []byte
Generated time.Time
RFC3339 string
}{
Data: bytes.Map(sanitize, data),
Generated: time.Now(),
}
if err := template.Execute(out, templateData); err != nil {
log.Fatalf("failed to execute template: %s", err)
}
log.Printf("Successfully wrote %q", *outFile)
}
// sanitize strips characters that can't be `-quoted
func sanitize(r rune) rune {
switch {
case r == '`':
return -1
case r == '\t', r == '\n':
return r
case r >= ' ' && r <= '~':
return r
}
return -1
}