Release

.gitignore

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+dist
+.DS_Store

Makefile

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+Bowser.app: clean Makefile src/*.go src/*.h src/*.m src/*.plist assets/*.icns assets/*.png
+	mkdir -p dist/Bowser.app/Contents/MacOS dist/Bowser.app/Contents/Resources
+	cd src && go build -i -o ../dist/Bowser.app/Contents/MacOS/bowser
+	cp assets/bowser.png dist/Bowser.app/Contents/MacOS
+	cp src/Info.plist dist/Bowser.app/Contents
+	cp assets/icon.icns dist/Bowser.app/Contents/Resources
+
+.PHONY: install
+install: Bowser.app
+	cp -Rf dist/Bowser.app /Applications
+
+.PHONY: clean
+clean:
+	-rm -Rf dist/Bowser.app

README.md

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+# bowser - Browser switch
+
+Bowser is a MacOS application that selects the browser to open for a URL based on rules you define.
+
+My use case is to have 2 default browsers : one for development (Chrome), and one for surf (Safari).
+
+## Install from binary releases
+
+TODO
+
+## Install from source
+
+The installation from source requires the Apple clang environment (XCode) and Go 1.8+
+
+```sh
+$ git clone https://github.com/netgusto/bowser
+$ cd bowser
+$ make install
+```
+
+## Setup as default browser

assets/bowser.sketch/metadata

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>app</key>
+	<string>com.bohemiancoding.sketch</string>
+	<key>build</key>
+	<integer>5370</integer>
+	<key>commit</key>
+	<string>38aeabf36c76d40a8ed2d256f8f3b9492c3dac07</string>
+	<key>fonts</key>
+	<array/>
+	<key>length</key>
+	<integer>21163</integer>
+	<key>version</key>
+	<integer>18</integer>
+</dict>
+</plist>

assets/bowser.sketch/version

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+18

src/Info.plist

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleExecutable</key>
+	<string>bowser</string>
+	<key>CFBundleIconFile</key>
+	<string>icon.icns</string>
+	<key>CFBundleIdentifier</key>
+	<string>com.netgusto.bowser</string>
+	<key>NSHighResolutionCapable</key>
+	<true/>
+	<key>CFBundleInfoDictionaryVersion</key>
+    <string>6.0</string>
+    <key>CFBundleName</key>
+    <string>Bowser</string>
+    <key>CFBundlePackageType</key>
+    <string>APPL</string>
+    <key>CFBundleShortVersionString</key>
+    <string>1.0.0</string>
+    <key>CFBundleVersion</key>
+    <string>20</string>
+	<key>LSUIElement</key>
+	<true/>
+	<key>LSBackgroundOnly</key>
+	<true/>
+	<key>CFBundleURLTypes</key>
+	<array>
+		<dict>
+			<key>CFBundleURLName</key>
+			<string>http URL</string>
+			<key>CFBundleURLSchemes</key>
+			<array>
+				<string>http</string>
+			</array>
+		</dict>
+		<dict>
+			<key>CFBundleURLName</key>
+			<string>Secure http URL</string>
+			<key>CFBundleURLSchemes</key>
+			<array>
+				<string>https</string>
+			</array>
+		</dict>
+		<dict>
+			<key>CFBundleURLName</key>
+			<string>Local file URL</string>
+			<key>CFBundleURLSchemes</key>
+			<array>
+				<string>file</string>
+			</array>
+		</dict>
+	</array>
+</dict>
+</plist>

src/handler.h

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+#import <Foundation/Foundation.h>
+
+extern void ReceiveURL(char*);
+
+@interface GoPasser : NSObject
++ (void)handleGetURLEvent:(NSAppleEventDescriptor *)event;
+@end
+
+void StartURLHandler(void);

src/handler.m

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+#include "handler.h"
+
+@implementation GoPasser
++ (void)handleGetURLEvent:(NSAppleEventDescriptor *)event
+{
+	ReceiveURL([[[event paramDescriptorForKeyword:keyDirectObject] stringValue] UTF8String]);
+}
+@end
+
+void StartURLHandler(void) {
+	NSAppleEventManager *appleEventManager = [NSAppleEventManager sharedAppleEventManager];
+    [appleEventManager setEventHandler:[GoPasser class]
+                           andSelector:@selector(handleGetURLEvent:)
+                         forEventClass:kInternetEventClass andEventID:kAEGetURL];
+}

src/handleurl.go

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+package main
+
+import (
+	"log"
+	"os"
+	"path/filepath"
+	"regexp"
+
+	gosxnotifier "github.com/deckarep/gosx-notifier"
+	"github.com/skratchdot/open-golang/open"
+)
+
+var devBrowser = "Google Chrome"
+var surfBrowser = "Safari"
+
+func handleURL(config Config, url string) chan interface{} {
+	wait := make(chan interface{})
+
+	go func() {
+		log.Println("Received URL")
+
+		var matchedBrowser *Browser
+
+		for _, browser := range config.Browsers {
+			for _, rgx := range browser.Match {
+				success, _ := regexp.MatchString(rgx, url)
+				if success {
+					matchedBrowser = &browser
+					break
+				}
+			}
+
+			if matchedBrowser != nil {
+				break
+			}
+		}
+
+		if matchedBrowser == nil {
+			// Looking for defautl browser
+			for _, browser := range config.Browsers {
+				if browser.Alias == "Default" {
+					matchedBrowser = &browser
+					break
+				}
+			}
+		}
+
+		if matchedBrowser == nil {
+			// Cannot find default browser; fall back to Safari
+			open.RunWith(url, "Safari")
+			// open.RunWith("https://github.com/netgusto/bowser", "Safari")
+			// open.RunWith("/tmp/hello.txt", "TextEdit")
+
+			notifyProblem(
+				"Cannot find a default browser - falling back to Safari\nSee https://github.com/netgusto/bowser",
+				"Bowser - No default browser",
+			)
+
+		} else {
+			err := open.RunWith(url, matchedBrowser.App)
+			if err != nil {
+				log.Println(err)
+
+				if err2 := open.RunWith(url, "Safari"); err2 == nil {
+					notifyProblem(
+						"URL Matched \""+matchedBrowser.Alias+"\" but failed to open \""+matchedBrowser.App+"\" - Falling back to Safari",
+						"Bowser - Problem with browser "+matchedBrowser.Alias,
+					)
+				} else {
+					notifyProblem(
+						"URL Matched \""+matchedBrowser.Alias+"\" but failed to open \""+matchedBrowser.App+"\" - Could not fall back to Safari",
+						"Bowser - Problem with browser "+matchedBrowser.Alias,
+					)
+				}
+			}
+		}
+
+		wait <- nil
+	}()
+
+	return wait
+}
+
+func notifyProblem(msg string, title string) {
+	note := gosxnotifier.NewNotification(msg)
+	note.Title = title
+	note.AppIcon = getNotificationIconPath()
+	note.Link = "https://github.com/netgusto/bowser#setup-default-browser"
+	note.Push()
+}
+
+func getNotificationIconPath() string {
+	dir, err := filepath.Abs(filepath.Dir(os.Args[0]))
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	return dir + "/" + "bowser.png"
+}

src/listen.go

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+package main
+
+// From https://gist.github.com/nathankerr/38d8b0d45590741b57f5f79be336f07c
+
+/*
+#cgo CFLAGS: -x objective-c -Wno-incompatible-pointer-types-discards-qualifiers
+#cgo LDFLAGS: -framework Foundation
+#include "handler.h"
+*/
+import "C"
+
+import (
+	"github.com/andlabs/ui"
+)
+
+//export ReceiveURL
+func ReceiveURL(u *C.char) {
+	urlStream <- C.GoString(u)
+}
+
+func listen(config Config) chan bool {
+
+	urlStream = make(chan string, 1) // the event handler blocks!, so buffer the channel at least once to get the first message
+	C.StartURLHandler()
+
+	done := make(chan bool)
+
+	ui.Main(func() {
+		ui.QueueMain(func() { ui.Quit() })
+
+		go func() {
+			for url := range urlStream {
+				<-handleURL(config, url)
+				done <- true
+			}
+		}()
+	})
+
+	return done
+}

src/main.go

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+package main
+
+import (
+	"log"
+	"log/syslog"
+	"time"
+
+	"github.com/arkan/dotconfig"
+	gosxnotifier "github.com/deckarep/gosx-notifier"
+	"github.com/skratchdot/open-golang/open"
+)
+
+var urlStream chan string
+var appname = "bowser"
+
+func main() {
+
+	config, err := getConfig()
+	if err != nil {
+		log.Panicln(err)
+	}
+
+	if config.Debug {
+		// Configure logger to write to the syslog
+		logwriter, err := syslog.New(syslog.LOG_NOTICE, appname)
+		if err == nil {
+			log.SetOutput(logwriter)
+		}
+	}
+
+	select {
+	case <-listen(config):
+		if config.IsDefault {
+			note := gosxnotifier.NewNotification("A default configuration has been set for Bowser in ~/.config/bowser/config.yml")
+			note.Title = "Bowser - Please configure"
+			note.AppIcon = getNotificationIconPath()
+			note.Link = "https://github.com/netgusto/bowser#setup"
+			note.Push()
+		}
+		log.Println("Done")
+	case <-time.After(300 * time.Millisecond):
+		open.RunWith("https://github.com/netgusto/bowser", "Safari")
+		log.Println("Not received any URL after .1s; exiting")
+	}
+}
+
+// Config ...
+type Config struct {
+	Debug     bool      `yaml:"debug"`
+	Browsers  []Browser `yaml:"browsers,omitempty"`
+	IsDefault bool      `yaml:"-"`
+}
+
+// Browser ...
+type Browser struct {
+	Alias string   `yaml:"alias"`
+	App   string   `yaml:"app,omitempty"`
+	Match []string `yaml:"match,omitempty"`
+}
+
+func getConfig() (Config, error) {
+	config := Config{}
+
+	if err := dotconfig.Load(appname, &config); err != nil {
+		if err == dotconfig.ErrConfigNotFound {
+			initDefaultConfig(&config)
+			if err := dotconfig.Save(appname, config); err != nil {
+				return config, err
+			}
+		}
+	} else if err != nil {
+		return config, err
+	}
+
+	return config, nil
+}
+
+func initDefaultConfig(config *Config) {
+	config.IsDefault = true
+	config.Debug = false
+	config.Browsers = []Browser{
+		Browser{
+			Alias: "Default",
+			App:   "Safari",
+		},
+		// Browser{
+		// 	Alias: "Dev",
+		// 	App:   "Google Chrome",
+		// 	Match: []string{
+		// 		"^https?://127.0.0.1",
+		// 		"^https?://localhost",
+		// 	},
+		// },
+	}
+}