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@@ -5,32 +5,48 @@
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package static // import "miniflux.app/ui/static"
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import (
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+ "bytes"
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"crypto/sha256"
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"embed"
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"fmt"
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+
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+ "github.com/tdewolff/minify/v2"
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+ "github.com/tdewolff/minify/v2/css"
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+)
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+
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+// Static assets.
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+var (
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+ StylesheetBundleChecksums map[string]string
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+ StylesheetBundles map[string][]byte
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)
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//go:embed bin/*
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var binaryFiles embed.FS
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+//go:embed css/*.css
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+var stylesheetFiles embed.FS
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+
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var binaryFileChecksums map[string]string
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-func init() {
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+// CalculateBinaryFileChecksums generates hash of embed binary files.
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+func CalculateBinaryFileChecksums() error {
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binaryFileChecksums = make(map[string]string)
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dirEntries, err := binaryFiles.ReadDir("bin")
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if err != nil {
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- panic(err)
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+ return err
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}
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for _, dirEntry := range dirEntries {
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data, err := LoadBinaryFile(dirEntry.Name())
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if err != nil {
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- panic(err)
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+ return err
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}
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binaryFileChecksums[dirEntry.Name()] = fmt.Sprintf("%x", sha256.Sum256(data))
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}
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+
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+ return nil
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}
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// LoadBinaryFile loads an embed binary file.
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@@ -45,3 +61,44 @@ func GetBinaryFileChecksum(filename string) (string, error) {
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}
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return binaryFileChecksums[filename], nil
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}
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+
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+// GenerateStylesheetsBundles creates CSS bundles.
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+func GenerateStylesheetsBundles() error {
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+ var bundles = map[string][]string{
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+ "light_serif": {"css/light.css", "css/serif.css", "css/common.css"},
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+ "light_sans_serif": {"css/light.css", "css/sans_serif.css", "css/common.css"},
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+ "dark_serif": {"css/dark.css", "css/serif.css", "css/common.css"},
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+ "dark_sans_serif": {"css/dark.css", "css/sans_serif.css", "css/common.css"},
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+ "system_serif": {"css/system.css", "css/serif.css", "css/common.css"},
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+ "system_sans_serif": {"css/system.css", "css/sans_serif.css", "css/common.css"},
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+ }
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+
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+ StylesheetBundles = make(map[string][]byte)
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+ StylesheetBundleChecksums = make(map[string]string)
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+
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+ minifier := minify.New()
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+ minifier.AddFunc("text/css", css.Minify)
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+
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+ for bundle, srcFiles := range bundles {
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+ var buffer bytes.Buffer
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+
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+ for _, srcFile := range srcFiles {
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+ fileData, err := stylesheetFiles.ReadFile(srcFile)
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+ if err != nil {
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+ return err
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+ }
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+
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+ buffer.Write(fileData)
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+ }
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+
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+ minifiedData, err := minifier.Bytes("text/css", buffer.Bytes())
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+ if err != nil {
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+ return err
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+ }
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+
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+ StylesheetBundles[bundle] = minifiedData
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+ StylesheetBundleChecksums[bundle] = fmt.Sprintf("%x", sha256.Sum256(minifiedData))
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+ }
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+
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+ return nil
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+}
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Frédéric Guillot