refac!: move from demon to oneshot storer

Breaking change: requires calling with
`wl-paste -t text --watch clipman store`.

As a side-effect, enable primary clipboard support:
`wl-paste -p -t text --watch clipman store
--histpath="~/.local/share/clipman-primary.json`!

Closes #12

CHANGELOG.md

@@ -2,5 +2,6 @@
 
 **Breaking changes**:
 
-- switch from flags to subcommands: `clipman listen` instead than `clipman -d` and `clipman pick` instead than `clipman -s`
+- switch from flags to subcommands: `wl-paste -t text --watch clipman store` instead than `clipman -d` and `clipman pick` instead than `clipman -s`
-- switch demon from polling to event-driven: requires wl-clipboard 2.0 (or latest git HEAD)
+- switch demon from polling to event-driven: requires wl-clipboard >= 2.0
+- primary clipboard support: `wl-paste -p -t text --watch clipman store --histpath="~/.local/share/clipman-primary.json` and `clipman pick --histpath="~/.local/share/clipman-primary.json`

README.md

@@ -16,9 +16,11 @@ Archlinux users can find a PKGBUILD [here](https://aur.archlinux.org/packages/cl
 
 ## Usage
 
-Run the binary in your Sway session by adding `exec clipman -d` (or `exec clipman -d 1>> PATH/TO/LOGFILE 2>&1 &` to log errors) at the beginning of your config.
+Run the binary in your Sway session by adding `exec wl-paste -t text --watch clipman store` (or `exec wl-paste -t text --watch clipman store 1>> PATH/TO/LOGFILE 2>&1 &` to log errors) at the beginning of your config.
+For primary clipboard support, also add `exec wl-paste -p -t text --watch clipman store --histpath="~/.local/share/clipman-primary.json`.
 
-To query the history and select items, run the binary as `clipman -s`. You can assign it to a keybinding: `bindsym $mod+h exec clipman -s`.
+To query the history and select items, run the binary as `clipman pick`. You can assign it to a keybinding: `bindsym $mod+h exec clipman pick`.
+For primary clipboard support, `clipman pick --histpath="~/.local/share/clipman-primary.json`.
 
 For more options: `clipman -h`.
 

go.mod

@@ -1,13 +1,12 @@
 module github.com/yory8/clipman
 
-go 1.12
+go 1.13
 
 require (
 	github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 // indirect
-	github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4 // indirect
+	github.com/alecthomas/units v0.0.0-20190910110746-680d30ca3117 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/kr/pretty v0.1.0 // indirect
-	github.com/stretchr/testify v1.4.0 // indirect
 	gopkg.in/alecthomas/kingpin.v2 v2.2.6
 	gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
 )

go.sum

@@ -1,7 +1,7 @@
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 h1:JYp7IbQjafoB+tBA3gMyHYHrpOtNuDiK/uB5uXxq5wM=
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
-github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4 h1:Hs82Z41s6SdL1CELW+XaDYmOH4hkBN4/N9og/AsOv7E=
+github.com/alecthomas/units v0.0.0-20190910110746-680d30ca3117 h1:aUo+WrWZtRRfc6WITdEKzEczFRlEpfW15NhNeLRc17U=
-github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
+github.com/alecthomas/units v0.0.0-20190910110746-680d30ca3117/go.mod h1:rBZYJk541a8SKzHPHnH3zbiI+7dagKZ0cgpgrD7Fyho=
 github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=

main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"bufio"
 	"encoding/json"
 	"fmt"
 	"io/ioutil"
@@ -14,10 +15,10 @@ import (
 var (
 	app       = kingpin.New("clipman", "A clipboard manager for Wayland")
 	histpath  = app.Flag("histpath", "Path of history file").Default("~/.local/share/clipman.json").String()
-	demon     = app.Command("listen", "Run as a demon to record clipboard events")
+	storer    = app.Command("store", "Run from `wl-paste --watch` to record clipboard events")
 	picker    = app.Command("pick", "Pick an item from clipboard history")
-	noPersist = demon.Flag("no-persist", "Don't persist a copy buffer after a program exits").Short('P').Default("false").Bool()
+	noPersist = storer.Flag("no-persist", "Don't persist a copy buffer after a program exits").Short('P').Default("false").Bool()
-	maxDemon  = demon.Flag("max-items", "history size").Default("15").Int()
+	maxDemon  = storer.Flag("max-items", "history size").Default("15").Int()
 	maxPicker = picker.Flag("max-items", "scrollview length").Default("15").Int()
 	tool      = picker.Flag("selector", "Which selector to use: dmenu/rofi/-").Default("dmenu").String()
 )
@@ -25,13 +26,26 @@ var (
 func main() {
 	app.HelpFlag.Short('h')
 	switch kingpin.MustParse(app.Parse(os.Args[1:])) {
-	case "listen":
+	case "store":
 		persist := !*noPersist
+
 		histfile, history, err := getHistory()
 		if err != nil {
 			log.Fatal(err)
 		}
-		listen(history, histfile, persist, *maxDemon)
+
+		// read copy from stdin
+		var stdin []string
+		scanner := bufio.NewScanner(os.Stdin)
+		for scanner.Scan() {
+			stdin = append(stdin, scanner.Text())
+		}
+		if err := scanner.Err(); err != nil {
+			log.Fatal("Error getting input from stdin.")
+		}
+		text := strings.Join(stdin, "\n")
+
+		store(text, history, histfile, *maxDemon, persist)
 	case "pick":
 		_, history, err := getHistory()
 		if err != nil {

storer.go

@@ -4,55 +4,9 @@ import (
 	"encoding/json"
 	"io/ioutil"
 	"log"
-	"os"
 	"os/exec"
 )
 
-type historyBuf struct {
-	buf      []string // field name as required by io.Writer, don't change
-	histfile string
-	max      int
-	persist  bool
-}
-
-func (hb *historyBuf) Write(p []byte) (n int, err error) {
-	hb.buf = store(string(p), hb.buf, hb.histfile, hb.max, hb.persist)
-	return len(p), err // signature as required by io.Writer, don't change
-}
-
-func write(history []string, histfile string) error {
-	histlog, err := json.Marshal(history)
-	if err != nil {
-		return err
-	}
-	err = ioutil.WriteFile(histfile, histlog, 0644)
-
-	return err
-}
-
-func filter(history []string, text string) []string {
-	var (
-		found bool
-		idx   int
-	)
-
-	for i, el := range history {
-		if el == text {
-			found = true
-			idx = i
-			break
-		}
-	}
-
-	if found {
-		// we know that idx can't be the last element, because
-		// we never get to call this function if that's the case
-		history = append(history[:idx], history[idx+1:]...)
-	}
-
-	return history
-}
-
 func store(text string, history []string, histfile string, max int, persist bool) []string {
 	l := len(history)
 	if l > 0 {
@@ -87,16 +41,35 @@ func store(text string, history []string, histfile string, max int, persist bool
 	return history
 }
 
-func listen(history []string, histfile string, persist bool, max int) {
+func filter(history []string, text string) []string {
-	cmd := exec.Command("wl-paste", "-t", "text", "--watch", "cat")
+	var (
-	cmd.Stdout = &historyBuf{history, histfile, max, persist}
+		found bool
-	cmd.Stderr = os.Stderr
+		idx   int
+	)
 
-	if err := cmd.Start(); err != nil {
+	for i, el := range history {
-		log.Fatalf("Error running wl-paste (cmd.Start): %s", err)
+		if el == text {
+			found = true
+			idx = i
+			break
+		}
 	}
 
-	if err := cmd.Wait(); err != nil {
+	if found {
-		log.Fatalf("Error running wl-paste (cmd.Wait): %s", err)
+		// we know that idx can't be the last element, because
+		// we never get to call this function if that's the case
+		history = append(history[:idx], history[idx+1:]...)
 	}
+
+	return history
+}
+
+func write(history []string, histfile string) error {
+	histlog, err := json.Marshal(history)
+	if err != nil {
+		return err
+	}
+	err = ioutil.WriteFile(histfile, histlog, 0644)
+
+	return err
 }