Switch chromad to go:embed and show version.

.circleci/config.yml

@@ -15,7 +15,7 @@ jobs:
     environment:
       GO111MODULE: "on"
     docker:
-      - image: circleci/golang:1.15
+      - image: circleci/golang:1.16
     working_directory: /go/src/github.com/alecthomas/chroma
     steps:
       - checkout
@@ -36,7 +36,7 @@ jobs:
             ./bin/golangci-lint run
   release:
     docker:
-      - image: circleci/golang:1.15
+      - image: circleci/golang:1.16
     steps:
       - checkout
       - run: curl -sL https://git.io/goreleaser | bash

Makefile

@@ -1,5 +1,7 @@
 .PHONY: chromad upload all
 
+VERSION ?= $(shell git describe --tags --dirty  --always)
+
 all: README.md tokentype_string.go
 
 README.md: lexers/*/*.go
@@ -9,10 +11,8 @@ tokentype_string.go: types.go
 	go generate
 
 chromad:
-	(cd ./cmd/chromad && go get github.com/GeertJohan/go.rice/rice@master && go install github.com/GeertJohan/go.rice/rice)
 	rm -f chromad
-	(export CGOENABLED=0 GOOS=linux ; cd ./cmd/chromad && go build -o ../../chromad .)
-	rice append -i ./cmd/chromad --exec=./chromad
+	(export CGOENABLED=0 GOOS=linux ; cd ./cmd/chromad && go build -ldflags="-X 'main.version=$(VERSION)'" -o ../../chromad .)
 
 upload: chromad
 	scp chromad root@swapoff.org: && \

cmd/chromad/go.mod

@@ -1,6 +1,6 @@
 module github.com/alecthomas/chroma/cmd/chromad
 
-go 1.13
+go 1.16
 
 require (
 	github.com/GeertJohan/go.rice v1.0.2

cmd/chromad/go.sum

@@ -1,6 +1,8 @@
+github.com/GeertJohan/go.incremental v1.0.0 h1:7AH+pY1XUgQE4Y1HcXYaMqAI0m9yrFqo/jt0CW30vsg=
 github.com/GeertJohan/go.incremental v1.0.0/go.mod h1:6fAjUhbVuX1KcMD3c8TEgVUqmo4seqhv0i0kdATSkM0=
 github.com/GeertJohan/go.rice v1.0.2 h1:PtRw+Tg3oa3HYwiDBZyvOJ8LdIyf6lAovJJtr7YOAYk=
 github.com/GeertJohan/go.rice v1.0.2/go.mod h1:af5vUNlDNkCjOZeSGFgIJxDje9qdjsO6hshx0gTmZt4=
+github.com/akavel/rsrc v0.8.0 h1:zjWn7ukO9Kc5Q62DOJCcxGpXC18RawVtYAGdz2aLlfw=
 github.com/akavel/rsrc v0.8.0/go.mod h1:uLoCtb9J+EyAqh+26kdrTgmzRBFPGOolLWKpdxkKq+c=
 github.com/alecthomas/assert v0.0.0-20170929043011-405dbfeb8e38 h1:smF2tmSOzy2Mm+0dGI2AIUHY+w0BUc+4tn40djz7+6U=
 github.com/alecthomas/assert v0.0.0-20170929043011-405dbfeb8e38/go.mod h1:r7bzyVFMNntcxPZXK3/+KdruV1H5KSlyVY0gc+NgInI=
@@ -32,11 +34,13 @@ github.com/gorilla/securecookie v1.1.1 h1:miw7JPhV+b/lAHSXz4qd/nN9jRiAFV5FwjeKyC
 github.com/gorilla/securecookie v1.1.1/go.mod h1:ra0sb63/xPlUeL+yeDciTfxMRAA+MP+HVt/4epWDjd4=
 github.com/hashicorp/hcl v1.0.0 h1:0Anlzjpi4vEasTeNFn2mLJgTSwt0+6sfsiTG8qcWGx4=
 github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
+github.com/jessevdk/go-flags v1.4.0 h1:4IU2WS7AumrZ/40jfhf4QVDMsQwqA7VEHozFRrGARJA=
 github.com/jessevdk/go-flags v1.4.0/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
 github.com/mattn/go-colorable v0.1.6/go.mod h1:u6P/XSegPjTcexA+o6vUJrdnUu04hMope9wVRipJSqc=
 github.com/mattn/go-isatty v0.0.12 h1:wuysRhFDzyxgEmMf5xjvJ2M9dZoWAXNNr5LSBS7uHXY=
 github.com/mattn/go-isatty v0.0.12/go.mod h1:cbi8OIDigv2wuxKPP5vlRcQ1OAZbq2CE4Kysco4FUpU=
 github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
+github.com/nkovacs/streamquote v1.0.0 h1:PmVIV08Zlx2lZK5fFZlMZ04eHcDTIFJCv/5/0twVUow=
 github.com/nkovacs/streamquote v1.0.0/go.mod h1:BN+NaZ2CmdKqUuTUXUEm9j95B2TRbpOWpxbJYzzgUsc=
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
@@ -50,7 +54,9 @@ github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6KllzawFIhcdPw=
 github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
+github.com/valyala/fasttemplate v1.0.1 h1:tY9CJiPnMXf1ERmG2EyK7gNUd+c6RKGD0IfU8WdUSz8=
 github.com/valyala/fasttemplate v1.0.1/go.mod h1:UQGH1tvbgY+Nz5t2n7tXsz52dQxojPUpymEIMZ47gx8=
 golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=

cmd/chromad/main.go

@@ -1,15 +1,14 @@
 package main
 
 import (
+	"embed"
 	"encoding/json"
-	"fmt"
 	"html/template"
 	"log"
 	"net/http"
 	"sort"
 	"strings"
 
-	rice "github.com/GeertJohan/go.rice"
 	"github.com/alecthomas/kong"
 	konghcl "github.com/alecthomas/kong-hcl"
 	"github.com/gorilla/csrf"
@@ -23,10 +22,14 @@ import (
 )
 
 var (
-	templateFiles = rice.MustFindBox("templates")
-	staticFiles   = rice.MustFindBox("static")
+	version = "devel"
 
-	htmlTemplate = template.Must(template.New("html").Parse(templateFiles.MustString("index.html.tmpl")))
+	//go:embed templates/index.html.tmpl
+	indexTemplate string
+	//go:embed static
+	staticFiles embed.FS
+
+	htmlTemplate = template.Must(template.New("html").Parse(indexTemplate))
 )
 
 type context struct {
@@ -124,7 +127,7 @@ func newContext(r *http.Request) context {
 	ctx := context{
 		SelectedStyle: "monokailight",
 		CSRFField:     csrf.TemplateField(r),
-		Version:       fmt.Sprintf("%d", staticFiles.Time().Unix()),
+		Version:       version,
 	}
 	style := styles.Get(ctx.SelectedStyle)
 	if style == nil {
@@ -147,18 +150,19 @@ func newContext(r *http.Request) context {
 
 func main() {
 	var cli struct {
-		Config  kong.ConfigFlag `help:"Load configuration." placeholder:"FILE"`
-		Bind    string          `help:"HTTP bind address." default:"127.0.0.1:8080"`
-		CSRFKey string          `help:"CSRF key." default:""`
+		Version kong.VersionFlag `help:"Show version."`
+		Config  kong.ConfigFlag  `help:"Load configuration." placeholder:"FILE"`
+		Bind    string           `help:"HTTP bind address." default:"127.0.0.1:8080"`
+		CSRFKey string           `help:"CSRF key." default:""`
 	}
-	ctx := kong.Parse(&cli, kong.Configuration(konghcl.Loader))
+	ctx := kong.Parse(&cli, kong.Configuration(konghcl.Loader), kong.Vars{"version": version})
 
-	log.Printf("Starting on http://%s\n", cli.Bind)
+	log.Printf("Starting chromad %s on http://%s\n", version, cli.Bind)
 
 	router := mux.NewRouter()
 	router.Handle("/", http.HandlerFunc(index)).Methods("GET")
 	router.Handle("/api/render", http.HandlerFunc(renderHandler)).Methods("POST")
-	router.Handle("/static/{file:.*}", http.StripPrefix("/static/", http.FileServer(staticFiles.HTTPBox()))).Methods("GET")
+	router.Handle("/static/{file:.*}", http.FileServer(http.FS(staticFiles))).Methods("GET")
 
 	options := []csrf.Option{}
 	if cli.CSRFKey == "" {

cmd/chromad/templates/index.html.tmpl

@@ -1,7 +1,7 @@
 <!doctype html>
 <html>
 <head>
-  <title>Chroma Playground</title>
+  <title>Chroma Playground ({{.Version}})</title>
   <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bulma/0.7.5/css/bulma.min.css"/>
   <style>
     textarea {
@@ -21,7 +21,7 @@
 <body>
 <div class="container">
 
-  <h1 class="title">Chroma Playground</h1>
+  <h1 class="title">Chroma Playground ({{.Version}})</h1>
 
   <div class="notification">
     <a href="https://github.com/alecthomas/chroma">Chroma</a> is a general purpose syntax highlighter in pure Go.