89 lines
2.2 KiB
Go
89 lines
2.2 KiB
Go
package main
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import (
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"fmt"
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"io"
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"log"
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"os"
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"strings"
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"github.com/wellington/go-libsass"
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)
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func newStylesMap() (map[string]string, error) {
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folder, err := os.ReadDir("styles/")
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if err != nil {
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return nil, fmt.Errorf("Could not load styles directory: %s", err)
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}
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styles := make(map[string]string)
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for _, s := range folder {
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contents, filename, err := loadStylesheet(s.Name())
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if err != nil {
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return nil, fmt.Errorf("could not generate styles for %s: %v", s.Name(), err)
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}
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styles[filename] = contents
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log.Printf("Loaded stylesheet %s", filename)
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}
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return styles, nil
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}
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func newStylesListener(updateMap func(func(map[string]string))) *listener {
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ln := &listener{
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folder: "styles/",
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update: func(file string) error {
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contents, filename, err := loadStylesheet(file)
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if err != nil {
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return err
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}
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updateMap(func(styles map[string]string) {
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styles[filename] = contents
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})
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return nil
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},
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clean: func(file string) error {
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updateMap(func(styles map[string]string) {
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delete(styles, file+".css")
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})
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return nil
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},
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}
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return ln
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}
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func loadStylesheet(filename string) (string, string, error) {
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if strings.HasSuffix(filename, ".scss") {
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return loadSCSS(filename)
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}
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return loadCSS(filename)
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}
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func loadSCSS(filename string) (string, string, error) {
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in, err := os.Open("styles/" + filename)
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if err != nil {
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return "", "", fmt.Errorf("Could not open style infile %s: %w", filename, err)
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}
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var buf strings.Builder
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comp, err := libsass.New(&buf, in)
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if err != nil {
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return "", "", fmt.Errorf("Could not start sass compiler for file %s: %w", filename, err)
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}
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if err = comp.Run(); err != nil {
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return "", "", fmt.Errorf("Could not generate stylesheet %s: %w", filename, err)
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}
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return buf.String(), strings.TrimSuffix(filename, ".scss") + ".css", nil
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}
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func loadCSS(filename string) (string, string, error) {
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in, err := os.Open("styles/" + filename)
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if err != nil {
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return "", "", fmt.Errorf("Could not open style infile %s: %w", filename, err)
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}
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var buf strings.Builder
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_, err = io.Copy(&buf, in)
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if err != nil {
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return "", "", fmt.Errorf("Could not copy stylesheet %s: %s", filename, err)
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}
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return buf.String(), filename, nil
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}
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