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// Copyright 2017 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
// print-bits.go prints stdin's bytes in hexadecimal and binary.
//
// Usage: go run print-bits.go < foo.bin
import (
"fmt"
"io"
"os"
)
func main() {
if err := main1(); err != nil {
os.Stderr.WriteString(err.Error() + "\n")
os.Exit(1)
}
}
func main1() error {
in := make([]byte, 4096)
bits := []byte("...._....\n")
os.Stdout.WriteString("offset xoffset ASCII hex binary\n")
for iBase := 0; ; {
n, err := os.Stdin.Read(in)
for i, x := range in[:n] {
bits[0] = bit(x >> 7)
bits[1] = bit(x >> 6)
bits[2] = bit(x >> 5)
bits[3] = bit(x >> 4)
bits[5] = bit(x >> 3)
bits[6] = bit(x >> 2)
bits[7] = bit(x >> 1)
bits[8] = bit(x >> 0)
ascii := rune(x)
if (x < 0x20) || (0x7F <= x) {
ascii = '.'
}
fmt.Printf("%06d 0x%04X %c 0x%02X 0b_%s", iBase+i, iBase+i, ascii, x, bits)
}
if err == io.EOF {
return nil
}
if err != nil {
return err
}
iBase += n
}
}
func bit(x byte) byte {
if x&1 != 0 {
return '1'
}
return '0'
}