added appargs for application arguments in dev mode

v2/cmd/wails/internal/commands/dev/dev.go

@@ -16,10 +16,10 @@ import (
 	"syscall"
 	"time"
 
+	"github.com/google/shlex"
 	"github.com/wailsapp/wails/v2/cmd/wails/internal"
 	"github.com/wailsapp/wails/v2/internal/gomod"
 
-	"github.com/leaanthony/slicer"
 	"github.com/wailsapp/wails/v2/internal/project"
 
 	"github.com/pkg/browser"
@@ -72,6 +72,7 @@ type devFlags struct {
 	forceBuild      bool
 	debounceMS      int
 	devServerURL    string
+	appargs         string
 }
 
 // AddSubcommand adds the `dev` command for the Wails application
@@ -93,6 +94,7 @@ func AddSubcommand(app *clir.Cli, w io.Writer) error {
 	command.BoolFlag("f", "Force build application", &flags.forceBuild)
 	command.IntFlag("debounce", "The amount of time to wait to trigger a reload on change", &flags.debounceMS)
 	command.StringFlag("devserverurl", "The url of the dev server to use", &flags.devServerURL)
+	command.StringFlag("appargs", "arguments to pass to the underlying app (quoted and space searated)", &flags.appargs)
 
 	command.Action(func() error {
 		// Create logger
@@ -353,6 +355,10 @@ func loadAndMergeProjectConfig(cwd string, flags *devFlags) (*project.Project, e
 		shouldSaveConfig = true
 	}
 
+	if flags.appargs == "" && projectConfig.AppArgs != "" {
+		flags.appargs = projectConfig.AppArgs
+	}
+
 	if shouldSaveConfig {
 		err = projectConfig.Save()
 		if err != nil {
@@ -462,7 +468,13 @@ func restartApp(buildOptions *build.Options, debugBinaryProcess *process.Process
 
 		debugBinaryProcess = nil
 	}
-	args := slicer.StringSlicer{}
+
+	// parse appargs if any
+	args, err := shlex.Split(flags.appargs)
+
+	if err != nil {
+		buildOptions.Logger.Fatal("Unable to parse appargs: %s", err.Error())
+	}
 
 	// Set environment variables accordingly
 	os.Setenv("loglevel", flags.loglevel)
@@ -470,7 +482,7 @@ func restartApp(buildOptions *build.Options, debugBinaryProcess *process.Process
 	os.Setenv("devserverurl", flags.devServerURL)
 
 	// Start up new binary with correct args
-	newProcess := process.NewProcess(appBinary, args.AsSlice()...)
+	newProcess := process.NewProcess(appBinary, args...)
 	err = newProcess.Start(exitCodeChannel)
 	if err != nil {
 		// Remove binary

v2/go.mod

@@ -56,6 +56,7 @@ require (
 	github.com/go-git/gcfg v1.5.0 // indirect
 	github.com/go-ole/go-ole v1.2.5 // indirect
 	github.com/google/go-cmp v0.5.5 // indirect
+	github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510 // indirect
 	github.com/jbenet/go-context v0.0.0-20150711004518-d14ea06fba99 // indirect
 	github.com/jchv/go-winloader v0.0.0-20210711035445-715c2860da7e // indirect
 	github.com/kevinburke/ssh_config v0.0.0-20201106050909-4977a11b4351 // indirect

v2/go.sum

@@ -75,6 +75,8 @@ github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/
 github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
+github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510 h1:El6M4kTTCOh6aBiKaUGG7oYTSPP8MxqL4YI3kZKwcP4=
+github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510/go.mod h1:pupxD2MaaD3pAXIBCelhxNneeOaAeabZDe5s4K6zSpQ=
 github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/google/uuid v1.1.2 h1:EVhdT+1Kseyi1/pUmXKaFxYsDNy9RQYkMWRH68J/W7Y=
 github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=

v2/internal/project/project.go

@@ -53,6 +53,9 @@ type Project struct {
 
 	// The url to use to server assets. Default "https://localhost:34115"
 	DevServerURL string `json:"devserverurl"`
+
+	// Arguments that are forwared to the application in dev mode
+	AppArgs string `json:"appargs"`
 }
 
 func (p *Project) Save() error {

website/docs/reference/cli.mdx

@@ -134,6 +134,7 @@ Your system is ready for Wails development!
 |  -wailsjsdir         | The directory to generate the generated Wails JS modules | Value in `wails.json` |
 |  -debounce         | The time to wait for reload after an asset change is detected  | 100 (milliseconds) |
 |  -devserverurl "url"         | Use 3rd party dev server url, EG Vite  | "http://localhost:34115" |
+|  -appargs "args"         | Arguments passed to the application in shell style  | |
 
 If the `assetdir`, `wailsjsdir`, `debounce` or `devserverurl` flags are provided on the command line, they are saved in
 `wails.json`, and become the defaults for subsequent invocations.

website/docs/reference/project-config.mdx

@@ -17,7 +17,9 @@ The project config resides in the `wails.json` file in the project directory. Th
 	"version": "[Project config version]",
 	"outputfilename": "[The name of the binary]",
 	"debounceMS": 100, // The default time the dev server waits to reload when it detects a vhange in assets
-	"devserverurl": "[URL to the dev server serving local assets. Default: http://localhost:34115]"
+	"devserverurl": "[URL to the dev server serving local assets. Default: http://localhost:34115]",
+	"appargs": "[Arguments passed to the application in shell style when in dev mode]"
+
 }
 ```