feat(platform): add support for OpenBSD

src/platform/battery/battery_openbsd.go

@@ -0,0 +1,57 @@
+package battery
+
+import (
+	"errors"
+	"strconv"
+	"strings"
+
+	"github.com/jandedobbeleer/oh-my-posh/src/platform/cmd"
+)
+
+// See https://man.openbsd.org/man8/apm.8
+func mapMostLogicalState(state string) State {
+	switch state {
+	case "3":
+		return Charging
+	case "0", "1":
+		return Discharging
+	case "2":
+		return Empty
+	default:
+		return Unknown
+	}
+}
+
+func parseBatteryOutput(apm_percentage string, apm_status string) (*Info, error) {
+	percentage, err := strconv.Atoi(strings.TrimSpace(apm_percentage))
+	if err != nil {
+		return nil, errors.New("Unable to parse battery percentage")
+	}
+
+	if percentage == 100 {
+		return &Info{
+			Percentage: percentage,
+			State:      Full,
+		}, nil
+	}
+
+	return &Info{
+		Percentage: percentage,
+		State:      mapMostLogicalState(apm_status),
+	}, nil
+}
+
+func Get() (*Info, error) {
+	apm_percentage, err := cmd.Run("apm", "-l")
+	if err != nil {
+		return nil, err
+	}
+
+	apm_status, err := cmd.Run("apm", "-b")
+	if err != nil {
+		return nil, err
+	}  
+
+  return parseBatteryOutput(apm_percentage, apm_status)
+
+}

src/platform/battery/battery_openbsd_test.go

@@ -0,0 +1,63 @@
+package battery
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestParseBatteryOutput(t *testing.T) {
+	cases := []struct {
+		Case                string
+		PercentOutput       string
+    StatusOutput        string
+		ExpectedState       State
+		ExpectedPercentage  int
+		ExpectError        bool
+	}{
+		{
+			Case:               "charging",
+			PercentOutput:      "99",
+      StatusOutput:       "3",
+			ExpectedState:      Charging,
+			ExpectedPercentage: 99,
+		},
+		{
+			Case:               "charging 1%",
+			PercentOutput:      "1",
+      StatusOutput:       "3",
+			ExpectedState:      Charging,
+			ExpectedPercentage: 1,
+		},
+		{
+			Case:               "removed",
+			PercentOutput:      "0",
+      StatusOutput:       "4",
+			ExpectedState:      Unknown,
+			ExpectedPercentage: 0,
+		},
+		{
+			Case:               "charged",
+			PercentOutput:      "100",
+      StatusOutput:       "0",
+			ExpectedState:      Full,
+			ExpectedPercentage: 100,
+		},
+		{
+			Case:               "discharging",
+			PercentOutput:      "25",
+      StatusOutput:       "1",
+			ExpectedState:      Discharging,
+			ExpectedPercentage: 25,
+		},
+	}
+	for _, tc := range cases {
+		info, err := parseBatteryOutput(tc.PercentOutput, tc.StatusOutput)
+		if tc.ExpectError {
+			assert.Error(t, err, tc.Case)
+			return
+		}
+		assert.Equal(t, tc.ExpectedState, info.State, tc.Case)
+		assert.Equal(t, tc.ExpectedPercentage, info.Percentage, tc.Case)
+	}
+}

src/platform/battery/battery_windows_nix.go

@@ -1,4 +1,4 @@
-//go:build !darwin && !netbsd
+//go:build !darwin && !netbsd && !openbsd
 
 package battery
 

src/platform/battery/battery_windows_nix_test.go

@@ -1,4 +1,4 @@
-//go:build !darwin && !netbsd
+//go:build !darwin && !netbsd && !openbsd
 
 // battery
 // Copyright (C) 2016-2017 Karol 'Kenji Takahashi' Woźniak