56 lines
1.0 KiB
Go
56 lines
1.0 KiB
Go
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package dbg
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import (
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"encoding/hex"
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"fmt"
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"os"
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)
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// Debug is a flag for whether or not verbose logging should be activated
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var Debug bool
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var rawBytes bool
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var allBytes bool
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func init() {
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Init()
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}
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// Init will set debug vars from ENVs and print out whatever is set
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func Init() {
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if !Debug {
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Debug = ("true" == os.Getenv("VERBOSE"))
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}
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if !allBytes {
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allBytes = ("true" == os.Getenv("VERBOSE_BYTES"))
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}
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if !rawBytes {
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rawBytes = ("true" == os.Getenv("VERBOSE_RAW"))
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}
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if Debug {
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fmt.Fprintf(os.Stderr, "DEBUG=true\n")
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}
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if allBytes || rawBytes {
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fmt.Fprintf(os.Stderr, "VERBOSE_BYTES=true\n")
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}
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if rawBytes {
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fmt.Fprintf(os.Stderr, "VERBOSE_RAW=true\n")
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}
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}
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// Trunc will take up to the first and last 20 bytes of the input to product 80 char hex output
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func Trunc(b []byte, n int) string {
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bin := b[:n]
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if allBytes || rawBytes {
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if rawBytes {
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return string(bin)
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}
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return hex.EncodeToString(bin)
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}
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if n > 40 {
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return hex.EncodeToString(bin[:19]) + ".." + hex.EncodeToString(bin[n-19:])
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}
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return hex.EncodeToString(bin)
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}
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