mirror of
https://github.com/thead-yocto-mirror/skia
synced 2026-09-16 20:22:06 +02:00
73 lines
1.6 KiB
Go
73 lines
1.6 KiB
Go
// Copyright 2017 The Wuffs Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build ignore
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package main
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// print-bits.go prints stdin's bytes in hexadecimal and binary.
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//
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// Usage: go run print-bits.go < foo.bin
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import (
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"fmt"
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"io"
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"os"
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)
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func main() {
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if err := main1(); err != nil {
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os.Stderr.WriteString(err.Error() + "\n")
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os.Exit(1)
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}
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}
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func main1() error {
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in := make([]byte, 4096)
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bits := []byte("...._....\n")
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os.Stdout.WriteString("offset xoffset ASCII hex binary\n")
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for iBase := 0; ; {
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n, err := os.Stdin.Read(in)
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for i, x := range in[:n] {
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bits[0] = bit(x >> 7)
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bits[1] = bit(x >> 6)
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bits[2] = bit(x >> 5)
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bits[3] = bit(x >> 4)
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bits[5] = bit(x >> 3)
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bits[6] = bit(x >> 2)
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bits[7] = bit(x >> 1)
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bits[8] = bit(x >> 0)
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ascii := rune(x)
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if (x < 0x20) || (0x7F <= x) {
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ascii = '.'
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}
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fmt.Printf("%06d 0x%04X %c 0x%02X 0b_%s", iBase+i, iBase+i, ascii, x, bits)
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}
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if err == io.EOF {
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return nil
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}
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if err != nil {
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return err
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}
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iBase += n
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}
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}
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func bit(x byte) byte {
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if x&1 != 0 {
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return '1'
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}
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return '0'
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}
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