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feat: detect windows terminal #141

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35 changes: 35 additions & 0 deletions termenv_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -2,8 +2,10 @@ package termenv

import (
"bytes"
"errors"
"fmt"
"image/color"
"io"
"io/ioutil"
"os"
"strings"
Expand Down Expand Up @@ -160,6 +162,39 @@ func TestANSIProfile(t *testing.T) {
}
}

func TestWSLDetectioninWindowsTerminal(t *testing.T) {
file, err := os.Open("/proc/sys/kernel/osrelease")
defer file.Close()
if err != nil && !errors.Is(err, os.ErrNotExist) {
t.Error("Error reading file proc/sys/kernel/osrelease")
}

tmpFile, err := os.CreateTemp("", "osrelease")
defer tmpFile.Close()
if err != nil {
t.Error("Error making tmp file")
}

io.Copy(tmpFile, file)
_, err = io.WriteString(tmpFile, "6.2.6-76060206-microsoft")
if err != nil {
t.Error("Error writing to tmp file")
}

content, err := os.ReadFile(tmpFile.Name())
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if err != nil {
t.Error("Error reading tmp file")
}

if os.Getenv("WT_SESSION") == "" {
os.Setenv("WT_SESSION", "a22023a86b26f5b301335de43994ddc3")
}
p := ColorProfile()
if p != TrueColor && !strings.Contains(strings.ToLower(string(content)), "mircosoft") && os.Getenv("WT_SESSION") == "" {
t.Errorf("Expected %d, got %d", TrueColor, p)
}
}

func TestANSI256Profile(t *testing.T) {
p := ANSI256

Expand Down
19 changes: 19 additions & 0 deletions termenv_unix.go
Original file line number Diff line number Diff line change
Expand Up @@ -4,8 +4,11 @@
package termenv

import (
"errors"
"fmt"
"io"
"io/ioutil"
"os"
"strconv"
"strings"
"time"
Expand Down Expand Up @@ -57,6 +60,22 @@ func (o *Output) ColorProfile() Profile {
}

if strings.Contains(term, "256color") {
// Check for WSL
wsl, err := ioutil.ReadFile("/proc/sys/kernel/osrelease")
// Additional check for Mac OS as it doesn't have "/proc/" folder
if err != nil && !errors.Is(err, os.ErrNotExist) {
return ANSI256
}
if string(wsl) != "" {
// Lowercasing every content inside "/proc/sys/kernal/osrelease"
// because it gives "Microsoft" for WSL and "microsoft" for WSL 2
// so no need of checking twice
wslLower := strings.ToLower(string(wsl))
// Also check if the terminal used is Windows Terminal
if strings.Contains(wslLower, "microsoft") && os.Getenv("WT_SESSION") != "" {
return TrueColor
}
}
return ANSI256
}
if strings.Contains(term, "color") {
Expand Down