add install methods (#28)

.goreleaser.yml

@@ -7,12 +7,26 @@ before:
 builds:
   - main: ./cmd/calma/
     binary: calma
+    ldflags:
+      - -s -w
+      - -X main.Version={{.Version}}
+      - -X main.Revision={{.ShortCommit}}
     goos:
-      - linux
       - darwin
       - windows
     env:
       - CGO_ENABLED=0
+  - id: calma-linux
+    main: ./cmd/calma
+    binary: calma
+    ldflags:
+      - -s -w
+      - -X main.Version={{.Version}}
+      - -X main.Revision={{.ShortCommit}}
+    goos:
+      - linux
+    env:
+      - CGO_ENABLED=0
 archives:
   - name_template: '{{ .ProjectName }}_{{ .Os }}_{{ .Arch }}{{ if .Arm }}v{{ .Arm }}{{ end }}'
     replacements:
@@ -47,3 +61,18 @@ scoop:
   homepage: "https://github.com/ddddddO/calma"
   description: "♻Calendar for Markdown♻ ...only for Japan!🎌"
   license: "BSD-2-Clause"
+nfpms:
+  - id: calma-nfpms
+    file_name_template: "{{ .ProjectName }}_{{ .Version }}-1_{{ .Arch }}"
+    builds:
+      - calma-linux
+    homepage: https://github.com/ddddddO/calma
+    maintainer: ddddddO <lbfdeatq@gmail.com>
+    description: "Calendar for Markdown ...only for Japan!"
+    license: BSD-2-Clause
+    formats:
+      - deb
+      - rpm
+      - apk
+    bindir: /usr/bin
+    epoch: 1

README.md

@@ -65,6 +65,26 @@ $ scoop bucket add ddddddO https://github.com/ddddddO/scoop-bucket.git
 $ scoop install ddddddO/calma
 ```
 
+### deb
+```console
+$ export CALMA_VERSION=X.X.X
+$ curl -o calma.deb -L https://github.com/ddddddO/calma/releases/download/v$CALMA_VERSION/calma_$CALMA_VERSION-1_amd64.deb
+$ dpkg -i calma.deb
+```
+
+### rpm
+```console
+$ export CALMA_VERSION=X.X.X
+$ yum install https://github.com/ddddddO/calma/releases/download/v$CALMA_VERSION/calma_$CALMA_VERSION-1_amd64.rpm
+```
+
+### apk
+```console
+$ export CALMA_VERSION=X.X.X
+$ curl -o calma.apk -L https://github.com/ddddddO/calma/releases/download/v$CALMA_VERSION/calma_$CALMA_VERSION-1_amd64.apk
+$ apk add --allow-untrusted calma.apk
+```
+
 ### etc
 
 **download binary from [here](https://github.com/ddddddO/calma/releases).**

cmd/calma/main.go

@@ -13,6 +13,11 @@ import (
 
 var jst = time.FixedZone("JST", +9*60*60)
 
+var (
+	Version  = "unset"
+	Revision = "unset"
+)
+
 func main() {
 	flag.Usage = func() {
 		usage := "This CLI outputs Japanese calendar in Markdown. It supports national holidays.\n\nUsage of %s:\n"
@@ -24,8 +29,16 @@ func main() {
 	flag.IntVar(&advance, "a", 0, "Number of months to advance")
 	var isHTML bool
 	flag.BoolVar(&isHTML, "html", false, "Output html")
+	var isVersion bool
+	flag.BoolVar(&isVersion, "version", false, "Show the version")
+
 	flag.Parse()
 
+	if isVersion {
+		fmt.Printf("calma version %s / revision %s\n", Version, Revision)
+		os.Exit(0)
+	}
+
 	if retreat != 0 && advance != 0 {
 		fmt.Fprintln(os.Stderr, xerrors.New("Please use either"))
 		os.Exit(1)