127 lines
3.3 KiB
Go
127 lines
3.3 KiB
Go
// SiYuan - Refactor your thinking
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// Copyright (c) 2020-present, b3log.org
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package model
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import (
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"bytes"
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"os"
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"path/filepath"
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"strings"
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"github.com/88250/lute/ast"
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"github.com/88250/lute/parse"
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"github.com/gorilla/css/scanner"
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"github.com/siyuan-note/logging"
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"github.com/siyuan-note/siyuan/kernel/util"
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"github.com/vanng822/css"
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)
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func fillThemeStyleVar(tree *parse.Tree) {
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themeStyles := getThemeStyleVar(Conf.Appearance.ThemeLight)
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if 1 > len(themeStyles) {
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return
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}
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ast.Walk(tree.Root, func(n *ast.Node, entering bool) ast.WalkStatus {
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if !entering {
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return ast.WalkContinue
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}
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for _, ial := range n.KramdownIAL {
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if "style" != ial[0] {
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continue
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}
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styleSheet := css.Parse(ial[1])
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buf := bytes.Buffer{}
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for _, r := range styleSheet.GetCSSRuleList() {
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styles := getStyleVarName(r.Style.Selector)
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for style, name := range styles {
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buf.WriteString(style)
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buf.WriteString(": ")
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value := themeStyles[name]
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if "" == value {
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// 回退为变量
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buf.WriteString("var(")
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buf.WriteString(name)
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buf.WriteString(")")
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} else {
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buf.WriteString(value)
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}
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buf.WriteString("; ")
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}
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}
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if 0 < buf.Len() {
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ial[1] = strings.TrimSpace(buf.String())
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}
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}
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return ast.WalkContinue
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})
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}
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func getStyleVarName(value *css.CSSValue) (ret map[string]string) {
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ret = map[string]string{}
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var start, end int
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var style, name string
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for i, t := range value.Tokens {
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if scanner.TokenIdent == t.Type && 0 == start {
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style = strings.TrimSpace(t.Value)
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continue
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}
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if scanner.TokenFunction == t.Type && "var(" == t.Value {
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start = i
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continue
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}
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if scanner.TokenChar == t.Type && ")" == t.Value {
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end = i
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if 0 < start && 0 < end {
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for _, tt := range value.Tokens[start+1 : end] {
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name += tt.Value
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}
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name = strings.TrimSpace(name)
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}
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start, end = 0, 0
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ret[style] = name
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style, name = "", ""
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}
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}
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return
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}
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func getThemeStyleVar(theme string) (ret map[string]string) {
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ret = map[string]string{}
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data, err := os.ReadFile(filepath.Join(util.ThemesPath, theme, "theme.css"))
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if err != nil {
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logging.LogErrorf("read theme [%s] css file failed: %s", theme, err)
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return
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}
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styleSheet := css.Parse(string(data))
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for _, rule := range styleSheet.GetCSSRuleList() {
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for _, style := range rule.Style.Styles {
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ret[style.Property] = strings.TrimSpace(style.Value.Text())
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// 如果两个短横线开头 CSS 解析器有问题，--b3-theme-primary: #3575f0; 会被解析为 -b3-theme-primary:- #3575f0
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// 这里两种解析都放到结果中
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ret["-"+style.Property] = strings.TrimSpace(strings.TrimPrefix(style.Value.Text(), "-"))
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}
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}
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return
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}
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