mirror of
https://github.com/gohugoio/hugo.git
synced 2024-11-14 20:37:55 -05:00
88 lines
2.3 KiB
Go
88 lines
2.3 KiB
Go
// Copyright 2023 The Hugo Authors. All rights reserved.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package sass
|
|
|
|
import (
|
|
"fmt"
|
|
"regexp"
|
|
"sort"
|
|
"strings"
|
|
|
|
"github.com/gohugoio/hugo/common/types/css"
|
|
)
|
|
|
|
const (
|
|
HugoVarsNamespace = "hugo:vars"
|
|
)
|
|
|
|
func CreateVarsStyleSheet(vars map[string]any) string {
|
|
if vars == nil {
|
|
return ""
|
|
}
|
|
var varsStylesheet string
|
|
|
|
var varsSlice []string
|
|
for k, v := range vars {
|
|
var prefix string
|
|
if !strings.HasPrefix(k, "$") {
|
|
prefix = "$"
|
|
}
|
|
|
|
switch v.(type) {
|
|
case css.QuotedString:
|
|
// Marked by the user as a string that needs to be quoted.
|
|
varsSlice = append(varsSlice, fmt.Sprintf("%s%s: %q;", prefix, k, v))
|
|
default:
|
|
if isTypedCSSValue(v) {
|
|
// E.g. 24px, 1.5rem, 10%, hsl(0, 0%, 100%), calc(24px + 36px), #fff, #ffffff.
|
|
varsSlice = append(varsSlice, fmt.Sprintf("%s%s: %v;", prefix, k, v))
|
|
} else {
|
|
// unquote will preserve quotes around URLs etc. if needed.
|
|
varsSlice = append(varsSlice, fmt.Sprintf("%s%s: unquote(%q);", prefix, k, v))
|
|
}
|
|
}
|
|
}
|
|
sort.Strings(varsSlice)
|
|
varsStylesheet = strings.Join(varsSlice, "\n")
|
|
return varsStylesheet
|
|
|
|
}
|
|
|
|
var (
|
|
isCSSColor = regexp.MustCompile(`^#[0-9a-fA-F]{3,6}$`)
|
|
isCSSFunc = regexp.MustCompile(`^([a-zA-Z-]+)\(`)
|
|
isCSSUnit = regexp.MustCompile(`^([0-9]+)(\.[0-9]+)?([a-zA-Z-%]+)$`)
|
|
)
|
|
|
|
// isTypedCSSValue returns true if the given string is a CSS value that
|
|
// we should preserve the type of, as in: Not wrap it in quotes.
|
|
func isTypedCSSValue(v any) bool {
|
|
switch s := v.(type) {
|
|
case int, int8, int16, int32, int64, uint, uint8, uint16, uint32, uint64, float32, float64, css.UnquotedString:
|
|
return true
|
|
case string:
|
|
if isCSSColor.MatchString(s) {
|
|
return true
|
|
}
|
|
if isCSSFunc.MatchString(s) {
|
|
return true
|
|
}
|
|
if isCSSUnit.MatchString(s) {
|
|
return true
|
|
}
|
|
|
|
}
|
|
|
|
return false
|
|
}
|