| // Copyright 2020 The Wuffs Authors. |
| // |
| // 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 |
| // |
| // https://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. |
| |
| // +build ignore |
| |
| package main |
| |
| // base38-encode.go prints the base38 encoding of each argument. |
| // |
| // Usage: go run base38-encode.go gif json |
| |
| import ( |
| "fmt" |
| "os" |
| "strings" |
| |
| "github.com/google/wuffs/lib/base38" |
| ) |
| |
| func main() { |
| if err := main1(); err != nil { |
| os.Stderr.WriteString(err.Error() + "\n") |
| os.Exit(1) |
| } |
| } |
| |
| func main1() error { |
| args := os.Args |
| if len(args) > 1 { |
| for _, arg := range args[1:] { |
| arg := (strings.ToLower(arg) + " ")[:4] |
| if code, ok := base38.Encode(arg); ok { |
| code0 := fmt.Sprintf("0x%06X", code) |
| code1 := fmt.Sprintf("0x%08X", code<<10) |
| fmt.Printf("%s code: %s %s code<<10: %s %s\n", |
| arg, code0, underscore(code0), code1, underscore(code1)) |
| } else { |
| fmt.Printf("%s -\n", arg) |
| } |
| } |
| } |
| return nil |
| } |
| |
| func underscore(s string) string { |
| if n := len(s) - 4; n > 0 { |
| return s[:n] + "_" + s[n:] |
| } |
| return s |
| } |