Commits
Diff
package element
import (
"regexp"
"strings"
)
type StyleMap struct {
Selector string
Styles *map[string]string
Sheet int
PsuedoStyles map[string]map[string]map[string]string
}
func ParseCSS(css string) map[string][]*StyleMap {
// Remove comments
css = removeComments(css)
// Parse regular selectors and styles
selectorRegex := regexp.MustCompile(`([^{]+){([^}]+)}`)
matches := selectorRegex.FindAllStringSubmatch(css, -1)
styleMaps := map[string][]*StyleMap{}
for _, match := range matches {
selectorBlock := strings.TrimSpace(match[1])
styleBlock := match[2]
selectors := parseSelectors(selectorBlock)
for _, s := range selectors {
styles := parseStyles(styleBlock)
sel := ExtractBaseElements(s)
smm := map[string]*StyleMap{}
for _, is := range sel {
for _, v := range is {
smm[v] = &StyleMap{}
smm[v].Styles = &styles
smm[v].Selector = s
if styleMaps[v] == nil {
styleMaps[v] = []*StyleMap{}
}
styleMaps[v] = append(styleMaps[v], smm[v])
}
}
}
}
return styleMaps
}
func parseSelectors(selectorBlock string) []string {
var selectors []string
var current strings.Builder
var parenthesesDepth int
for _, char := range selectorBlock {
switch char {
case '(':
// Enter parentheses
parenthesesDepth++
current.WriteRune(char)
case ')':
// Exit parentheses
parenthesesDepth--
current.WriteRune(char)
case ',':
// Split only if not inside parentheses
if parenthesesDepth == 0 {
selectors = append(selectors, strings.TrimSpace(current.String()))
current.Reset()
} else {
current.WriteRune(char)
}
default:
current.WriteRune(char)
}
}
// Add the last selector (if any)
if current.Len() > 0 {
selectors = append(selectors, strings.TrimSpace(current.String()))
}
return selectors
}
func parseStyles(styleBlock string) map[string]string {
styleRegex := regexp.MustCompile(`([a-zA-Z-]+)\s*:\s*([^;]+);`)
matches := styleRegex.FindAllStringSubmatch(styleBlock, -1)
styleMap := make(map[string]string)
for _, match := range matches {
propName := strings.TrimSpace(match[1])
propValue := strings.TrimSpace(match[2])
styleMap[propName] = propValue
}
return styleMap
}
func ParseStyleAttribute(styleValue string) map[string]string {
styleMap := make(map[string]string)
start := 0
for i := 0; i < len(styleValue); i++ {
if styleValue[i] == ';' {
part := styleValue[start:i]
if len(part) > 0 {
key, value := parseKeyValue(part)
if key != "" && value != "" {
styleMap[key] = value
}
}
start = i + 1
}
}
// Handle the last part if there's no trailing semicolon
if start < len(styleValue) {
part := styleValue[start:]
key, value := parseKeyValue(part)
if key != "" && value != "" {
styleMap[key] = value
}
}
return styleMap
}
func parseKeyValue(style string) (string, string) {
for i := 0; i < len(style); i++ {
if style[i] == ':' {
key := strings.TrimSpace(style[:i])
value := strings.TrimSpace(style[i+1:])
return key, value
}
}
return "", ""
}
func removeComments(css string) string {
commentRegex := regexp.MustCompile(`(?s)/\*.*?\*/`)
return commentRegex.ReplaceAllString(css, "")
}
