add a goreleaser config

.gitignore

@@ -16,3 +16,6 @@ coverage.html
 testlog
 log
 *.log
+
+# goreleaser outputs
+dist/

.goreleaser.yml

@@ -0,0 +1,66 @@
+project_name: jlog
+env_files:
+    github_token: ~/.github_token
+before:
+    hooks:
+        - go mod download
+        - go test ./...
+        - golangci-lint run
+builds:
+    - id: jlog
+      dir: .
+      main: ./cmd/jlog/main.go
+      binary: jlog
+      env:
+          - CGO_ENABLED=0
+      goos:
+          - linux
+          - windows
+          - darwin
+      goarch:
+          - amd64
+          - arm
+          - arm64
+      ignore:
+          - goos: darwin
+            goarch: arm
+          - goos: darwin
+            goarch: arm64
+          - goos: windows
+            goarch: arm
+          - goos: windows
+            goarch: arm64
+      ldflags:
+          - "-s -w -X main.version={{.Version}} -X main.commit={{.Commit}} -X
+            main.date={{.CommitDate}} -X main.builtBy=goreleaser"
+      mod_timestamp: "{{.CommitTimestamp}}"
+      flags: -trimpath
+archives:
+    - id: jlog
+      builds:
+          - jlog
+      format: binary
+      wrap_in_directory: false
+      name_template: "jlog_{{ .Version }}_{{ .Os }}_{{ .Arch }}"
+checksum:
+    name_template: "checksums.txt"
+snapshot:
+    name_template: "{{ .Tag }}-next"
+changelog:
+    sort: asc
+    filters:
+        exclude:
+            - "^docs:"
+            - "^test:"
+release:
+    github:
+        owner: jrockway
+        name: json-logs
+    ids:
+        - jlog
+    draft: true
+    prerelease: auto
+    name_template: "jlog {{.Version}}"
+    disable: false
+source:
+    enabled: false

cmd/jlog/main.go

@@ -19,6 +19,13 @@ import (
 	"github.com/mattn/go-isatty"
 )
 
+var (
+	version = "dev"
+	commit  = "none"
+	date    = "unknown"
+	builtBy = "unknown"
+)
+
 type output struct {
 	NoElideDuplicates  bool     `long:"no-elide" description:"Disable eliding repeated fields.  By default, fields that have the same value as the line above them have their values replaced with '↑'." env:"JLOG_NO_ELIDE_DUPLICATES"`
 	RelativeTimestamps bool     `short:"r" long:"relative" description:"Print timestamps as a duration since the program started instead of absolute timestamps." env:"JLOG_RELATIVE_TIMESTAMPS"`
@@ -30,9 +37,9 @@ type output struct {
 }
 
 type general struct {
-	JQ           string `short:"e" description:"A jq program to run on the processed input; use this to ignore certain lines, add fields, etc."`
+	JQ           string `short:"e" description:"A jq program to run on each record in the processed input; use this to ignore certain lines, add fields, etc.  Hint: 'select(condition)' will remove lines that don't match 'condition'."`
 	NoColor      bool   `short:"M" long:"no-color" description:"Disable the use of color." env:"JLOG_FORCE_MONOCHROME"`
-	NoMonochrome bool   `short:"C" long:"no-monochrome" description:"Force the use of color." ENV:"JLOG_FORCE_COLOR"`
+	NoMonochrome bool   `short:"C" long:"no-monochrome" description:"Force the use of color.  Note: the short flag will change in a future release." ENV:"JLOG_FORCE_COLOR"`
 	Profile      string `long:"profile" description:"If set, collect a CPU profile and write it to this file."`
 }
 
@@ -60,7 +67,8 @@ func main() {
 
 	if _, err := fp.Parse(); err != nil {
 		if ferr, ok := err.(*flags.Error); ok && ferr.Type == flags.ErrHelp {
-			fmt.Fprintf(os.Stderr, "jlog - Search and pretty-print your JSON logs.\n\nMore info: https://github.com/jrockway/json-logs\n")
+			fmt.Fprintf(os.Stderr, "jlog - Search and pretty-print your JSON logs.\nMore info: https://github.com/jrockway/json-logs\n")
+			fmt.Fprintf(os.Stderr, "Version %s (%s) built on %s by %s\n", version, commit, date, builtBy)
 			fmt.Fprintf(os.Stderr, ferr.Message)
 			os.Exit(2)
 		}