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Code Issues Releases Wiki Activity

Use ANSI background color for telnet package

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This commit is contained in:
Alexandre Iooss 2020-10-16 20:09:59 +02:00
parent fd606be15c
commit b5907fee1a
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GPG Key ID: 6C79278F3FCDCC02
1 changed files with 10 additions and 6 deletions
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16
stream/telnet/telnet.go
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@ -2,6 +2,7 @@
package telnet
import (
"fmt"
"io"
"log"
"net"
@ -15,8 +16,6 @@ var (
Cfg *Options
currentMessage map[string]*string
clientCount map[string]int
asciiChars = []byte{' ', '.', ',', ':', ';', '+', '*', '?', '%', '$', '#', '@'}
)
// Options holds telnet package configuration
@ -99,6 +98,9 @@ func Serve(config *Options) {
clientCount[streamID]++
// Hide terminal cursor
_, _ = s.Write([]byte("\033[?25l"))
for {
n, err := s.Write([]byte(*currentMessage[streamID]))
if err != nil {
@ -152,7 +154,7 @@ func StartASCIIArtStream(streamID string, reader io.ReadCloser) {
// Header
textBuff.Reset()
textBuff.Grow((2*Cfg.Width + 1) * Cfg.Height)
textBuff.Grow((40*Cfg.Width+6)*Cfg.Height + 47)
for i := 0; i < 42; i++ {
textBuff.WriteByte('\n')
}
@ -161,13 +163,15 @@ func StartASCIIArtStream(streamID string, reader io.ReadCloser) {
for i, pixel := range pixelBuff {
if i%Cfg.Width == 0 {
// New line
textBuff.WriteByte('\n')
textBuff.WriteString("\033[49m\n")
}
// Print two times the character to make a square
textBuff.WriteByte(asciiChars[pixel/22])
textBuff.WriteByte(asciiChars[pixel/22])
text := fmt.Sprintf("\033[48;2;%d;%d;%dm ", pixel, pixel, pixel)
textBuff.WriteString(text)
textBuff.WriteString(text)
}
textBuff.WriteString("\033[49m")
*(currentMessage[streamID]) = textBuff.String()
}