156 lines
3.3 KiB
Go
156 lines
3.3 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"net/url"
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"os/exec"
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"regexp"
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)
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// MatchFunc is a signature for a function to match a URL
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type MatchFunc = func(url.URL) bool
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// A BrowserRule is a rule that will launch a browser, if matched
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type BrowserRule struct {
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matcher MatchFunc
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command string
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args []string
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}
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// IsMatched will check to see the rule matches the provied URL
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func (r BrowserRule) IsMatched(dest url.URL) bool {
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return r.matcher(dest)
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}
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// Launch will launch the browser with the provided URL
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func (r BrowserRule) Launch(dest url.URL) error {
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args := append(r.args, "--", dest.String())
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cmd := exec.Command(r.command, args...)
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return cmd.Start()
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}
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// MaybeLaunch will lauch the browser with the provided URL if it matches the rule
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func (r BrowserRule) MaybeLaunch(dest url.URL) (bool, error) {
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if r.IsMatched(dest) {
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return true, r.Launch(dest)
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}
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return false, nil
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}
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func matchHostname(hostnames ...string) MatchFunc {
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return func(dest url.URL) bool {
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for _, host := range hostnames {
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if host == dest.Hostname() {
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return true
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}
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}
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return false
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}
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}
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func matchHostRegexp(hostRegexp ...string) MatchFunc {
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matchers := []*regexp.Regexp{}
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for _, s := range hostRegexp {
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matchers = append(matchers, regexp.MustCompile(s))
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}
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return func(dest url.URL) bool {
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for _, matcher := range matchers {
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if matcher.MatchString(dest.Hostname()) {
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return true
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}
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}
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return false
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}
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}
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func matchRegexp(urlRegexp ...string) MatchFunc {
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matchers := []*regexp.Regexp{}
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for _, s := range urlRegexp {
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matchers = append(matchers, regexp.MustCompile(s))
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}
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return func(dest url.URL) bool {
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for _, matcher := range matchers {
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if matcher.MatchString(dest.String()) {
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return true
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}
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}
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return false
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}
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}
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func matchAny(matchFuncs ...MatchFunc) MatchFunc {
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return func(dest url.URL) bool {
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for _, f := range matchFuncs {
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if f(dest) {
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return true
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}
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}
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return false
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}
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}
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// Always returns true
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func defaultBrowser(dest url.URL) bool {
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return true
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}
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// Never returns true
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func matchNever(dest url.URL) bool {
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return false
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}
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func handleURL(browserRules []BrowserRule, urlString string) error {
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dest, err := url.Parse(urlString)
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if err != nil {
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return fmt.Errorf("failed to parse url: %s, %w", urlString, err)
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}
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var matched bool
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for _, rule := range browserRules {
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matched, err = rule.MaybeLaunch(*dest)
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if err != nil {
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return fmt.Errorf("failed launching browser: %w", err)
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}
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if matched {
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break
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}
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}
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return nil
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}
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func main() {
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configPath := flag.String("config", "", "Path to config file, otherwise it will default to $XDG_CONFIG_HOME/browser-ruler/config.hcl or $HOME/.browser-ruler.hcl")
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flag.Parse()
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// Read config path from option or find default
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if *configPath == "" {
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defaultConfigPath, err := DefaultConfigPath()
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if err != nil {
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fmt.Println("Failed to get a path to any config files")
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panic(err)
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}
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configPath = &defaultConfigPath
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}
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// Read rules from config path
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browserRules, err := LoadConfig(*configPath)
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if err != nil {
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fmt.Printf("Could not read config from path %s\n", *configPath)
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panic(err)
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}
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// Get urls from args
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urls := flag.Args()
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// For each url, run matcher
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for _, urlString := range urls {
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err := handleURL(browserRules, urlString)
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if err != nil {
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panic(err)
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}
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}
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}
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