diff --git a/CHANGELOG.md b/CHANGELOG.md new file mode 100644 index 0000000..912f7d5 --- /dev/null +++ b/CHANGELOG.md @@ -0,0 +1,9 @@ +## Changelog for lordofscripts/govee + +--- +### 1.0 +##### Released on _Wed 1.Nov.2023_ by _lordofscripts_ +### First Release! +* Supports queries (-list and -state) and state changes (-on and -off) +* While it seems like an overkill, it uses a _Command Pattern_ to process commands +* Command-line interface application written in GO \ No newline at end of file diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..e72bfdd --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. \ No newline at end of file diff --git a/README.md b/README.md new file mode 100644 index 0000000..7826bf6 --- /dev/null +++ b/README.md @@ -0,0 +1,95 @@ +# Lord of Scripts(tm)) Govee CLI + +This is a handy command-line interface application to list all Govee smart +devices in your home network, as well as control them (On/Off). + +The more verbose way requires several **CLI** parameters such as device MAC & Model +in order to control them. Alternatively, you can put all your Govee smart +devices in a configuration file and assign them an easy-to-remember ID (alias). + +With this you can use the CLI to perform the actions you desire, or create +desktop shortcuts that invoke the CLI command. + +I'm sure you will find this utility quite handy. Feel free to consider a small +donation so that I can continue working on these utilities: + +[Buy LostInWriting a coffee!](https://www.buymeacoffee.com/lostinwriting) + +## Requirements + +- GO v1.20 +- github.com/loxhill/go-vee +- Request a Govee API key + +## Using Govee API +This small Go app is conveniently named "govee" which is the name of the +executable. + +### Configuration File + +The configuration file, if present, should be at `~/.config/govee.json` and it +must be in JSON format. It would look like this: + +>{ +> "version": "0.1", +> "apiKey": "YOUR GOVEE API KEY HERE" +> "devices": [ +> { +> "model": "H5083", +> "mac": "DEVICE MAC ADDRESS", +> "alias": "SmartPlug1", +> "location": "Recamara #2" +> } +> ] +>} + +The MAC address is a series of 8 hexadecimal pairs which is unique to each +device and looks like this: `AA:BB:CC:DD:EE:FF:00:11` + +You will need to request a personal API key to Govee, they are quite quick. But +do remember that it is only for **personal** use, not commercial use! If you +use a configuration file, make sure to put your API key where indicated. +Alternatively, you can put the API key in the `GOVEE_API` environment variable. + +### Obtaining a GOVEE API key + +The keys are for personal use only, if you keep that in mind and suits your needs, +then all is okay. + +- Install the Govee Home app on your mobile. You probably already have since + you have a Govee device. I am using Govee Home app v5.8.30. +- Click on the Cog wheel (`Settings`) on the upper right) +- In the `Settings` page, click on the `Apply for API Key` +- Fill out the requested information (Name, reason, agreement) and send. + +You should receive the personal API key within a day.) + +### Usage + +> govee -list +Uses your WiFi/Internet connection to query your local network and list ALL +Govee smart devices. It will list them giving you their model number (for use +with -model flag), MAC address (-mac flag) and official name. + +> govee -mac {MAC_ADDRESS} -model {MODEL_NUMBER} -on +Turns on the device identified by the MAC address and Model number. + +> govee -mac {MAC_ADDRESS} -model {MODEL_NUMBER} -off +Turns off the device identified by the MAC address and Model number. + +However, it is much easier to assign easy identifications to your device and +even annotate it with their locations within your premises. For that, you need +to use a *configuration file* as described above. Once you do that, you can +easily turn your devices on or off using their alias, which you can remember +without having to look them up. Here are the config-based versions of the +previous two commands: + +> govee -id {ALIAS_NAME} -on +Turns on the device identified by the MAC address and Model number. For the +sample configuration above it would become `govee -id SmartPlug1 -on` + +> govee -id {ALIAS_NAME} -off +Turns off the device identified by the MAC address and Model number. + +----- +https://allmylinks.com/lordofscripts \ No newline at end of file diff --git a/cmd/main.go b/cmd/main.go new file mode 100644 index 0000000..606e489 --- /dev/null +++ b/cmd/main.go @@ -0,0 +1,281 @@ +/* ----------------------------------------------------------------- + * https://allmylinks.com/lordofscripts + * Copyright (C)2023 Lord of Scripts(tm) + * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + * Utility program that uses GOVEE API to control (On/Off/List/State) + * GOVEE smart devices in your network. + *-----------------------------------------------------------------*/ +package main +// https://govee-public.s3.amazonaws.com/developer-docs/GoveeDeveloperAPIReference.pdf + +import ( + "flag" + "fmt" + "os" + "path" + "strings" + + "lordofscripts/govee" + "lordofscripts/govee/util" + veex "github.com/loxhill/go-vee" +) + +const ( + HOME_ENV = "HOME" // environment var. holding user home directory + MY_CONFIG = ".config/govee.json" // config file relative to HOME_ENV + API_KEY = "" +) + +/* ---------------------------------------------------------------- + * T y p e s + *-----------------------------------------------------------------*/ +type ICommand interface { + execute() error +} + +type GoveeCommand struct { + Client *veex.Client + Address string + Model string +} + +/* ---------------------------------------------------------------- + * T y p e s + * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + * OnCommand::GoveeCommand + *-----------------------------------------------------------------*/ +type OnCommand struct { + GoveeCommand +} + +func newCmdOn(clientPtr *veex.Client, address, model string) *OnCommand { + o := &OnCommand{ + GoveeCommand: GoveeCommand{ + Client: clientPtr, + Address: address, + Model: model, + }, + } + return o +} + +// implements ICommand for OnCommand +func (c *OnCommand) execute() error { + controlRequest, _ := c.Client.Device(c.Address, c.Model).TurnOn() + _, err := c.Client.Run(controlRequest) + return err +} + +/* ---------------------------------------------------------------- + * T y p e s + * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + * OffCommand::GoveeCommand + *-----------------------------------------------------------------*/ +type OffCommand struct { + GoveeCommand +} + +func newCmdOff(clientPtr *veex.Client, address, model string) *OffCommand { + o := &OffCommand{ + GoveeCommand: GoveeCommand{ + Client: clientPtr, + Address: address, + Model: model, + }, + } + return o +} + +// implements ICommand for OffCommand +func (c *OffCommand) execute() error { + controlRequest, _ := c.Client.Device(c.Address, c.Model).TurnOff() + _, err := c.Client.Run(controlRequest) + return err +} + +/* ---------------------------------------------------------------- + * T y p e s + * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + * StateCommand::GoveeCommand + *-----------------------------------------------------------------*/ + +// the State commands obtains the online and powered state of a device +// along its h/w address and model- +type StateCommand struct { + GoveeCommand +} + +func newCmdState(clientPtr *veex.Client, address, model string) *StateCommand { + o := &StateCommand{ + GoveeCommand: GoveeCommand{ + Client: clientPtr, + Address: address, + Model: model, + }, + } + return o +} + +// implements ICommand for StateCommand +func (c *StateCommand) execute() error { + stateRequest := c.Client.Device(c.Address, c.Model).State() + // {Code:200 Message:Success Data:{Device:D7:B6:60:74:F4:02:D5:A2 Model:H5083 Properties:[map[online:true] map[powerState:off]] Devices:[]}} + rsp, err := c.Client.Run(stateRequest) // govee.GoveeResponse + //fmt.Printf("%+v\n", rsp) + if rsp.Code != 200 { + err = fmt.Errorf("State request failed: %q", rsp.Message) + } else { + fmt.Println("\tMAC :", rsp.Data.Device) + fmt.Println("\tModel :", rsp.Data.Model) + fmt.Println("\tOnline :", rsp.Data.Properties[0]["online"]) + fmt.Println("\tPowered:", rsp.Data.Properties[1]["powerState"]) + } + return err +} +/* ---------------------------------------------------------------- + * T y p e s + * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + * ListCommand::GoveeCommand + *-----------------------------------------------------------------*/ +type ListCommand struct { + GoveeCommand +} + +func newCmdList(clientPtr *veex.Client) *ListCommand { + o := &ListCommand{ + GoveeCommand: GoveeCommand{ + Client: clientPtr, + Address: "", + Model: "", + }, + } + return o +} + +// implements ICommand for ListCommand +func (c *ListCommand) execute() error { + listRequest := c.Client.ListDevices() + if response, err := c.Client.Run(listRequest); err != nil { + return err + } else { + devices := response.Devices() + for i,d := range devices { + fmt.Printf("#%d\n\tDevice: %s\n\tModel : %s\n\tType : %s\n", i+1, d.Device, d.Model, d.DeviceName) + } + } + return nil +} + +/* ---------------------------------------------------------------- + * F u n c t i o n s + *-----------------------------------------------------------------*/ + +func getHelp() { + fmt.Printf("Govee v%s by Lord of Scripts\n", govee.CURRENT_VERSION) + fmt.Println("Usage:") + fmt.Println(" govee -list") + fmt.Println(" govee -mac {MAC_ADDRESS} -model {MODEL_NUMBER} -on") + fmt.Println(" govee -mac {MAC_ADDRESS} -model {MODEL_NUMBER} -off") + fmt.Println(" govee -mac {MAC_ADDRESS} -model {MODEL_NUMBER} -state") + // these two need a config file with entries + fmt.Println(" govee -id {ALIAS} -on") + fmt.Println(" govee -id {ALIAS} -off") + fmt.Println(" govee -id {ALIAS} -state") + flag.PrintDefaults() + fmt.Println("\t*** ***") +} + +/* ---------------------------------------------------------------- + * M A I N + *-----------------------------------------------------------------*/ +func main() { + fmt.Printf("\t\t../ GoveeLux v%s (c)2023 Lord of Scripts \\..\n", govee.CURRENT_VERSION) + fmt.Println("\t\t https://allmylinks.com/lordofscripts") + + var optHelp, optList, optOn, optOff, optState bool + var inDevice, inModel, inAlias string + flag.BoolVar(&optHelp, "help", false, "This help") + flag.BoolVar(&optList, "list", false, "List devices") + flag.BoolVar(&optOn, "on", false, "Turn ON") + flag.BoolVar(&optOff, "off", false, "Turn OFF") + flag.BoolVar(&optState, "state", false, "Request online/power state of device") + flag.StringVar(&inDevice, "mac", "", "Device MAC") + flag.StringVar(&inModel, "model", "", "Device Model") + flag.StringVar(&inAlias, "id", "", "Device alias (derive Model & MAC from this)") + flag.Parse() + + // any command given or at least help? + if optHelp || !(optList || optOn || optOff || optState) { + getHelp() + if optHelp { + os.Exit(0) + } + os.Exit(1) + } + // state && on & off are mutually exclusive + if !util.One(optOn, optOff, optState, optList) { + getHelp() + fmt.Println("Decide either -on OR -off OR -state OR -list") + os.Exit(1) + } + + // Config + cfgFilename := path.Join(os.Getenv(HOME_ENV), MY_CONFIG) + + if len(inAlias) != 0 { + cfg := govee.Read(cfgFilename) + candidates := cfg.Devices.Where(govee.ALIAS, inAlias) + cnt := candidates.Count() + if cnt == 0 { + fmt.Printf("Could not find alias %q in repository\n", inAlias) + os.Exit(2) + } + + if cnt > 1 { + fmt.Printf("Found %d entries. Alias not unique, please correct config\n", cnt) + os.Exit(2) + } + + fmt.Println("\tFound ", candidates[0], "\n\tAt :", candidates[0].Location) + inDevice = candidates[0].MacAddress + inModel = candidates[0].Model + } + + // with STATE, ON & OFF commands DEVICE & MODEL are required + if (optOn || optOff || optState) && ((len(inDevice) == 0) && (len(inModel) == 0)) { + getHelp() + fmt.Println("-dev MAC and -model MODEL options are required!") + os.Exit(1) + } else { + inDevice = strings.ToUpper(inDevice) + inModel = strings.ToUpper(inModel) + } + + key := govee.GetAPI(cfgFilename) + if len(key) == 0 { + fmt.Println("You forgot to set your GOVEE API Key!") + os.Exit(2) + } + + // TurnOff, TurnOn, SetBrightness, SetColor, SetColorTem + client := veex.New(key) + var command ICommand + switch { + case optList: + command = newCmdList(client) + + case optOn: + command = newCmdOn(client, inDevice, inModel) + + case optOff: + command = newCmdOff(client, inDevice, inModel) + + case optState: + command = newCmdState(client, inDevice, inModel) + } + + if err := command.execute(); err != nil { + //fmt.Printf("Error type: %T\nMessage: %s\n%v\n", err, err, err) + fmt.Printf("\tError : %v\n", err) + } +} \ No newline at end of file diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..3eedff3 --- /dev/null +++ b/go.mod @@ -0,0 +1,5 @@ +module lordofscripts/govee + +go 1.21.0 + +require github.com/loxhill/go-vee v0.0.0-20230825161508-7c8c34d2ee28 diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..cc3faac --- /dev/null +++ b/go.sum @@ -0,0 +1,2 @@ +github.com/loxhill/go-vee v0.0.0-20230825161508-7c8c34d2ee28 h1:oSED7BzozltkdBVaMIaQkK5d7/V9avQx/XK3HfV8Aw0= +github.com/loxhill/go-vee v0.0.0-20230825161508-7c8c34d2ee28/go.mod h1:gLqZGKn+W6944XJfI9VastC/QRVTVs+Htd9R8aiE1dQ= diff --git a/govee_config.go b/govee_config.go new file mode 100644 index 0000000..4aea567 --- /dev/null +++ b/govee_config.go @@ -0,0 +1,152 @@ +/* ----------------------------------------------------------------- + * https://allmylinks.com/lordofscripts + * Copyright (C)2023 Lord of Scripts(tm) + * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + * + *-----------------------------------------------------------------*/ +package govee + +import ( + "fmt" + "encoding/json" + "os" + "strings" +) + +const ( + GOVEE_ENV = "GOVEE_API" // environment variable holding API KEY + CURRENT_VERSION = "1.0" + MODEL = 'M' + MAC = 'N' + ALIAS = 'A' + LOCATION = 'L' +) + +/* ---------------------------------------------------------------- + * T y p e s + *-----------------------------------------------------------------*/ +type Field rune +type DeviceCollection []GoveeDevice + +type GoveeDevice struct { + Model string `json:"model"` + MacAddress string `json:"mac"` + Alias string `json:"alias"` + Location string `json:"location"` +} + +type GoveeConfig struct { + Version string `json:"version"` + ApiKey string `json:"apiKey"` + Devices DeviceCollection `json:"devices"` +} + +/* ---------------------------------------------------------------- + * G l o b a l s + *-----------------------------------------------------------------*/ + +/* ---------------------------------------------------------------- + * C o n s t r u c t o r s + *-----------------------------------------------------------------*/ +func NewConfig() *GoveeConfig { + c := &GoveeConfig{ + Version: CURRENT_VERSION, + ApiKey: os.Getenv(GOVEE_ENV), + Devices: make([]GoveeDevice,0), + } + return c +} +/* ---------------------------------------------------------------- + * M e t h o d s + *-----------------------------------------------------------------*/ +func (d GoveeDevice) String() string { + return fmt.Sprintf("%s @%s %q", d.Model, d.MacAddress, d.Alias) +} + +func (q DeviceCollection) Where(fld Field, value string) DeviceCollection { + var selected DeviceCollection + selected = make([]GoveeDevice,0) + value = strings.Trim(value, " \t") + if len(q) > 0 { + for _,v := range q { + switch fld { + case MODEL: + if strings.ToUpper(v.Model) == strings.ToUpper(value) { + selected = append(selected, v) + } + case MAC: + if strings.ToUpper(v.MacAddress) == strings.ToUpper(value) { + selected = append(selected, v) + } + case ALIAS: + if strings.ToUpper(v.Alias) == strings.ToUpper(value) { + selected = append(selected, v) + } + case LOCATION: + if strings.ToUpper(v.Location) == strings.ToUpper(value) { + selected = append(selected, v) + } + } + } + } + return selected +} + +func (q DeviceCollection) Count() int { + if q == nil { + return 0 + } + return len(q) +} +/* ---------------------------------------------------------------- + * F u n c t i o n s + *-----------------------------------------------------------------*/ +// Read the configureation file. Else return a default configuration. +// The default configuration reads the API Key from the environment. +func Read(filename string) *GoveeConfig { + if _, err := os.Stat(filename); err != nil { + fmt.Printf("WARN: Cannot read config %s", filename) + return NewConfig() + } + + // read existing + fd, err := os.Open(filename) + defer fd.Close() + + if err != nil { + fmt.Println(err) + return NewConfig() + } + + var cfg GoveeConfig + jsonParser := json.NewDecoder(fd) + if err := jsonParser.Decode(&cfg); err != nil { + fmt.Printf("read JSON ERR %v\n", err) + return NewConfig() + } + + if len(cfg.ApiKey) == 0 { + cfg.ApiKey = os.Getenv(GOVEE_ENV) + } + return &cfg +} + +// Get the API Key only. If not present in the environment, then fallback +// to the configuration file (if any). +func GetAPI(filename string) string { + key,set := os.LookupEnv(GOVEE_ENV) + key = strings.Trim(key," \t") + if len(key) == 0 { + // try to read config file + if len(filename) == 0 && !set{ + fmt.Printf("Please set your API key on environment %q or create config file\n", GOVEE_ENV) + return "" + } + + cfg := Read(filename) + return cfg.ApiKey + } + return key +} + + \ No newline at end of file diff --git a/makefile b/makefile new file mode 100644 index 0000000..8df1a43 --- /dev/null +++ b/makefile @@ -0,0 +1,18 @@ +GO=~/go/bin/colorgo +BIN=~/go/bin +BIN_OUT=$(BIN)/govee +CMD_CLI=./cmd + +all: govee + +govee: + $(GO) build -v -o $(BIN_OUT) -tags=none $(CMD_CLI)/*.go + +update: + go get -u all + +testall: + go test ./... + +testfull: + go test -v test/*_test.go diff --git a/test/boolean_test.go b/test/boolean_test.go new file mode 100644 index 0000000..a1bdc42 --- /dev/null +++ b/test/boolean_test.go @@ -0,0 +1,157 @@ +/* ----------------------------------------------------------------- + * https://allmylinks.com/lordofscripts + * Copyright (C)2023 Lord of Scripts(tm) + * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + * + *-----------------------------------------------------------------*/ +package util_test + +import ( + "fmt" + "testing" + "lordofscripts/govee/util" +) + +func init() { + fmt.Println("Boolean Test") +} + +/* ---------------------------------------------------------------- + * T y p e s + *-----------------------------------------------------------------*/ +type testCase struct { + display string + values []bool + expect bool +} + +/* ---------------------------------------------------------------- + * G l o b a l s + *-----------------------------------------------------------------*/ +const ( + // test bit patterns (readable) + PAT_O = "000" + PAT_1 = "001" + PAT_2 = "010" + PAT_3 = "011" + PAT_4 = "100" + PAT_5 = "101" + PAT_6 = "110" + PAT_7 = "111" +) + +var ( + // test bit pattern values + value0 = []bool{false,false,false} + value1 = []bool{false,false,true} + value2 = []bool{false,true,false} + value3 = []bool{false,true,true} + value4 = []bool{true,false,false} + value5 = []bool{true,false,true} + value6 = []bool{true,true,false} + value7 = []bool{true,true,true} +) +/* ---------------------------------------------------------------- + * C o n s t r u c t o r s + *-----------------------------------------------------------------*/ +func newCase(disp string, exp bool, vals []bool, ) testCase { + return testCase{ + display: disp, + values: vals, + expect: exp, + } +} + +/* ---------------------------------------------------------------- + * F u n c t i o n s + *-----------------------------------------------------------------*/ +func TestOne(t *testing.T) { + testCases := []testCase { + newCase(PAT_O, false, value0), + newCase(PAT_1, true, value1), + newCase(PAT_2, true, value2), + newCase(PAT_3, false, value3), + newCase(PAT_4, true, value4), + newCase(PAT_5, false, value5), + newCase(PAT_6, false, value6), + newCase(PAT_7, false, value7), + } + + for i,tCase := range testCases { + // https://stackoverflow.com/questions/23723955/how-can-i-pass-a-slice-as-a-variadic-input + result := util.One(tCase.values...) + if result != tCase.expect { + t.Errorf("#%d FAIL One-of %s needs:%t got %t\n", i, tCase.display, tCase.expect, result) + } else { + fmt.Printf("#%d OK One-of %s = %t\n", i, tCase.display, result) + } + } +} + +func TestAny(t *testing.T) { + testCases := []testCase { + newCase(PAT_O, false, value0), + newCase(PAT_1, true, value1), + newCase(PAT_2, true, value2), + newCase(PAT_3, true, value3), + newCase(PAT_4, true, value4), + newCase(PAT_5, true, value5), + newCase(PAT_6, true, value6), + newCase(PAT_7, true, value7), + } + + for i,tCase := range testCases { + result := util.Any(tCase.values...) + if result != tCase.expect { + t.Errorf("#%d FAIL Any-of %s needs:%t got %t\n", i, tCase.display, tCase.expect, result) + } else { + fmt.Printf("#%d OK Any-of %s = %t\n", i, tCase.display, result) + } + } +} + +func TestNone(t *testing.T) { + testCases := []testCase { + newCase(PAT_O, true, value0), + newCase(PAT_1, false, value1), + newCase(PAT_2, false, value2), + newCase(PAT_3, false, value3), + newCase(PAT_4, false, value4), + newCase(PAT_5, false, value5), + newCase(PAT_6, false, value6), + newCase(PAT_7, false, value7), + } + + for i,tCase := range testCases { + result := util.None(tCase.values...) + if result != tCase.expect { + t.Errorf("#%d FAIL None-of %s needs:%t got %t\n", i, tCase.display, tCase.expect, result) + } else { + fmt.Printf("#%d OK None-of %s = %t\n", i, tCase.display, result) + } + } +} + +func TestExclusiveOr(t *testing.T) { + testCases := []testCase { + newCase(PAT_O, false, value0), + newCase(PAT_1, true, value1), + newCase(PAT_2, true, value2), + newCase(PAT_3, false, value3), + newCase(PAT_4, true, value4), + newCase(PAT_5, false, value5), + newCase(PAT_6, false, value6), + newCase(PAT_7, true, value7), + } + + for i,tCase := range testCases { + result := util.ExclusiveOr(tCase.values...) + //checkmark := "\u2713" + if result != tCase.expect { + t.Errorf("#%d FAIL ExclusiveOr-of %s needs:%t got %t\n", i, tCase.display, tCase.expect, result) + } else { + fmt.Printf("#%d OK ExclusiveOr-of %s = %t\n", i, tCase.display, result) + } + } +} + \ No newline at end of file diff --git a/util/boolean.go b/util/boolean.go new file mode 100644 index 0000000..95c1022 --- /dev/null +++ b/util/boolean.go @@ -0,0 +1,62 @@ +/* ----------------------------------------------------------------- + * https://allmylinks.com/lordofscripts + * Copyright (C)2023 Lord of Scripts(tm) + * - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + * + *-----------------------------------------------------------------*/ +package util + +/* ---------------------------------------------------------------- + * F u n c t i o n s + *-----------------------------------------------------------------*/ + +// Boolean OR: Any(b0,b1,b2...bn) +func Any(params ...bool) bool { + var value uint = 0 + for i, v := range params { + var operand uint = 0 + if v { + operand = 1 + } + value = value | (operand << i) + } + return value != 0 +} + +// Boolean AND: None(b0,b1,b2...bn) +func None(params ...bool) bool { + var value uint = 0 + for i, v := range params { + var operand uint = 0 + if v { + operand = 1 + } + value = value | (operand << i) + } + return value == 0 +} + +// Just one set +func One(params ...bool) bool { + cnt := 0 + for _, v := range params { + if v { + cnt += 1 + } + } + return cnt == 1 +} + +// Boolean exclusive OR (XOR) +func ExclusiveOr(params ...bool) bool { + cnt := 0 + for _, v := range params { + if v { + cnt += 1 + } + } + return !((cnt % 2) == 0) +} + + + \ No newline at end of file