disable brotli support without CGO

.gitmodules

@@ -76,3 +76,6 @@
 [submodule "vendor/github.com/smartystreets/assertions"]
 	path = vendor/github.com/smartystreets/assertions
 	url = https://github.com/smartystreets/assertions
+[submodule "vendor/github.com/itchio/go-brotli"]
+	path = vendor/github.com/itchio/go-brotli
+	url = https://github.com/itchio/go-brotli

build/ci/.drone.yml

@@ -17,7 +17,7 @@ steps:
   - name: test
     image: golang:latest
     environment:
-      CGO_ENABLED: 0
+      CGO_ENABLED: 1
       GOOS: linux
       GOARCH: amd64
     commands:
@@ -29,7 +29,7 @@ steps:
   - name: build for linux
     image: golang:latest
     environment:
-      CGO_ENABLED: 0
+      CGO_ENABLED: 1
       GOOS: linux
       GOARCH: amd64
     commands:
@@ -48,7 +48,7 @@ steps:
   - name: build for freebsd
     image: golang:latest
     environment:
-      CGO_ENABLED: 0
+      CGO_ENABLED: 1
       GOOS: freebsd
       GOARCH: amd64
     commands:
@@ -59,7 +59,7 @@ steps:
   - name: build for macos
     image: golang:latest
     environment:
-      CGO_ENABLED: 0
+      CGO_ENABLED: 1
       GOOS: darwin
       GOARCH: amd64
     commands:
@@ -70,7 +70,7 @@ steps:
   - name: build for windows
     image: golang:latest
     environment:
-      CGO_ENABLED: 0
+      CGO_ENABLED: 1
       GOOS: windows
       GOARCH: amd64
       FILEEXT: .exe

example/content/de/config.yml

@@ -1,2 +1,2 @@
 This:
-    GoTo: main/home
+    GoTo: main/home/

example/content/en/config.yml

@@ -1,2 +1,2 @@
 This:
-    GoTo: main/home
+    GoTo: main/home/

pkg/mark2web/brotli.go

@@ -0,0 +1,48 @@
+// +build cgo
+
+package mark2web
+
+import (
+	"io"
+	"os"
+
+	"gitbase.de/apairon/mark2web/pkg/helper"
+	"github.com/itchio/go-brotli/enc"
+)
+
+var brotliSupported = true
+
+func handleBrotliCompression(filename string, content []byte) {
+	brFilename := filename + ".br"
+
+	helper.Log.Infof("writing to compressed output file: %s", brFilename)
+
+	f, err := os.Create(brFilename)
+	if err != nil {
+		helper.Log.Panicf("could not create file '%s': %s", brFilename, err)
+	}
+	defer f.Close()
+
+	bw := enc.NewBrotliWriter(f, nil)
+	defer bw.Close()
+
+	if content != nil {
+		// content given
+		_, err = bw.Write(content)
+		if err != nil {
+			helper.Log.Panicf("could not write brotli content for '%s': %s", filename, err)
+		}
+	} else {
+		// read file
+		r, err := os.Open(filename)
+		if err != nil {
+			helper.Log.Panicf("could not open file '%s': %s", filename, err)
+		}
+		defer r.Close()
+
+		_, err = io.Copy(bw, r)
+		if err != nil {
+			helper.Log.Panicf("could not write brotli file for '%s': %s", filename, err)
+		}
+	}
+}

pkg/mark2web/compress.go

@@ -1,7 +1,6 @@
 package mark2web
 
 import (
-	"bytes"
 	"compress/gzip"
 	"io"
 	"io/ioutil"
@@ -15,16 +14,26 @@ func handleCompression(filename string, content []byte) {
 	ThreadStart(func() {
 		if _, ok := Config.Compress.Extensions[path.Ext(filename)]; ok {
 
+			if Config.Compress.Brotli {
+				handleBrotliCompression(filename, content)
+			}
+
 			if Config.Compress.GZIP {
 				gzFilename := filename + ".gz"
 
 				helper.Log.Infof("writing to compressed output file: %s", gzFilename)
-				var buf bytes.Buffer
 
-				zw, err := gzip.NewWriterLevel(&buf, gzip.BestCompression)
+				f, err := os.Create(gzFilename)
+				if err != nil {
+					helper.Log.Panicf("could not create file '%s': %s", gzFilename, err)
+				}
+				defer f.Close()
+
+				zw, err := gzip.NewWriterLevel(f, gzip.BestCompression)
 				if err != nil {
 					helper.Log.Panicf("could not initialize gzip writer for '%s': %s", filename, err)
 				}
+				defer zw.Close()
 
 				if content != nil {
 					// content given
@@ -34,32 +43,18 @@ func handleCompression(filename string, content []byte) {
 					}
 				} else {
 					// read file
-					f, err := os.Open(filename)
+					r, err := os.Open(filename)
 					if err != nil {
 						helper.Log.Panicf("could not open file '%s': %s", filename, err)
 					}
-					defer f.Close()
-					_, err = io.Copy(zw, f)
+					defer r.Close()
+
+					_, err = io.Copy(zw, r)
 					if err != nil {
 						helper.Log.Panicf("could not gzip file '%s': %s", filename, err)
 					}
 				}
 
-				err = zw.Close()
-				if err != nil {
-					helper.Log.Panicf("could not close gziped content for '%s': %s", filename, err)
-				}
-
-				f, err := os.Create(gzFilename)
-				if err != nil {
-					helper.Log.Panicf("could not create file '%s': %s", gzFilename, err)
-				}
-				defer f.Close()
-
-				_, err = buf.WriteTo(f)
-				if err != nil {
-					helper.Log.Panicf("could not write to file '%s': %s", gzFilename, err)
-				}
 			}
 		}
 	})

pkg/mark2web/config_global.go

@@ -28,6 +28,7 @@ type GlobalConfig struct {
 	} `yaml:"OtherFiles"`
 
 	Compress struct {
+		Brotli     bool              `yaml:"Brotli"`
 		GZIP       bool              `yaml:"GZIP"`
 		Extensions map[string]string `yaml:"Extensions"`
 	} `yaml:"Compress"`

pkg/mark2web/htaccess.go

@@ -26,35 +26,52 @@ func WriteWebserverConfig() {
 	switch Config.Webserver.Type {
 	case "apache":
 		configStr := `
-    AddCharset UTF-8 .html
-    AddCharset UTF-8 .json
-    AddCharset UTF-8 .js
-    AddCharset UTF-8 .css
+AddCharset UTF-8 .html
+AddCharset UTF-8 .json
+AddCharset UTF-8 .js
+AddCharset UTF-8 .css
+
+RemoveLanguage .br
+
+<IfModule mod_headers.c>
 
     RewriteEngine on		
 `
 
-		if Config.Compress.GZIP {
-			for ext, contentType := range Config.Compress.Extensions {
-				rExt := regexp.QuoteMeta(ext)
+		rewriteMacro := func(e, c, x, xx string) string {
+			return `
 
-				configStr += `
-    RewriteCond "%{HTTP:Accept-encoding}" "gzip"
-    RewriteCond "%{REQUEST_FILENAME}\.gz" -s
-    RewriteRule "^(.*)` + rExt + `" "$1` + rExt + `\.gz" [QSA]
+    ######` + e + `.` + x + `
 
-    RewriteRule "` + rExt + `\.gz$" "-" [E=no-gzip:1]
+    RewriteCond "%{HTTP:Accept-encoding}" "` + xx + `"
+    RewriteCond "%{REQUEST_FILENAME}\.` + x + `" -s
+    RewriteRule "^(.*)` + e + `" "$1` + e + `\.` + x + `" [QSA]
 
-    <FilesMatch "` + rExt + `\.gz$">
-      ForceType '` + contentType + `; charset=UTF-8'
-      Header append Content-Encoding gzip
+    RewriteRule "` + e + `\.` + x + `$" "-" [E=no-gzip:1,E=no-brotli]
+
+    <FilesMatch "` + e + `\.` + x + `$">
+      ForceType '` + c + `; charset=UTF-8'
+      Header append Content-Encoding ` + xx + `
       Header append Vary Accept-Encoding
     </FilesMatch>
 
 `
+		}
+
+		for ext, contentType := range Config.Compress.Extensions {
+			rExt := regexp.QuoteMeta(ext)
+			if brotliSupported && Config.Compress.Brotli {
+				configStr += rewriteMacro(rExt, contentType, "br", "br")
+			}
+			if Config.Compress.GZIP {
+				configStr += rewriteMacro(rExt, contentType, "gz", "gzip")
 			}
 		}
 
+		configStr += `
+</IfModule>
+`
+
 		if configStr != "" {
 			htaccessFile := Config.Directories.Output + "/.htaccess"
 			helper.Log.Noticef("writing webserver config to: %s", htaccessFile)

pkg/mark2web/no_cgo.go

@@ -0,0 +1,14 @@
+// +build !cgo
+
+package mark2web
+
+import "gitbase.de/apairon/mark2web/pkg/helper"
+
+var brotliSupported = false
+
+func init() {
+	helper.Log.Warning("cgo is disabled, so brotli compression is not supported")
+}
+
+func handleBrotliCompression(filename string, content []byte) {
+}

vendor/github.com/itchio/go-brotli

@@ -0,0 +1 @@
+Subproject commit 29899a447037af0c68028d70df58ac2faebf280c

website/config.yml

@@ -14,6 +14,7 @@ OtherFiles:
   Action: "copy"
 
 Compress:
+  Brotli: True
   GZIP: True
   Extensions:
     .html: text/html