Commits
Diff
diff --git a/element/parser.go b/element/parser.go
index 78ca4cf..96e2ad1 100644
--- a/element/parser.go
+++ b/element/parser.go
@@ -218,4 +217,0 @@ func Token(start, end, split rune, s string) []string {
- for i, v := range tokens {
- tokens[i] = strings.TrimSpace(v)
- }
-
package element
import (
"bytes"
"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)
// Split into rule blocks
blocks := splitBlocks(css)
styleMaps := map[string][]*StyleMap{}
for _, block := range blocks {
// Split selector from style declarations
parts := strings.SplitN(block, "{", 2)
if len(parts) != 2 {
continue // Invalid block
}
selectorBlock := strings.TrimSpace(parts[0])
styleBlock := strings.TrimSpace(strings.TrimSuffix(parts[1], "}"))
// Parse selectors and styles
selectors := Token('(', ')', ',', selectorBlock)
styles := parseStylesSimple(styleBlock)
styles = Expander(styles)
// Add to style maps
for _, s := range selectors {
sel := ExtractBaseElements(s)
for _, is := range sel {
for _, v := range is {
styleMap := &StyleMap{
Selector: s,
Styles: &styles,
}
if styleMaps[v] == nil {
styleMaps[v] = []*StyleMap{}
}
styleMaps[v] = append(styleMaps[v], styleMap)
}
}
}
}
return styleMaps
}
// splitBlocks splits CSS into rule blocks without using regex
func splitBlocks(css string) []string {
var blocks []string
var currentBlock bytes.Buffer
var braceDepth int
for i := 0; i < len(css); i++ {
ch := css[i]
if ch == '{' {
braceDepth++
} else if ch == '}' {
braceDepth--
if braceDepth == 0 {
currentBlock.WriteByte(ch)
blocks = append(blocks, currentBlock.String())
currentBlock.Reset()
continue
}
}
if braceDepth > 0 || !isWhitespace(ch) {
currentBlock.WriteByte(ch)
}
}
return blocks
}
// parseStylesSimple parses CSS style declarations without using regex
func parseStylesSimple(styleBlock string) map[string]string {
styles := make(map[string]string)
declarations := strings.Split(styleBlock, ";")
for _, declaration := range declarations {
declaration = strings.TrimSpace(declaration)
if declaration == "" {
continue
}
parts := strings.SplitN(declaration, ":", 2)
if len(parts) != 2 {
continue
}
property := strings.TrimSpace(parts[0])
value := strings.TrimSpace(parts[1])
if property != "" && value != "" {
styles[property] = value
}
}
return styles
}
// removeComments removes CSS comments without using regex
func removeComments(css string) string {
var result bytes.Buffer
i := 0
for i < len(css) {
if i+1 < len(css) && css[i] == '/' && css[i+1] == '*' {
// Skip until end of comment
i += 2
for i+1 < len(css) && !(css[i] == '*' && css[i+1] == '/') {
i++
}
i += 2 // Skip */
} else {
result.WriteByte(css[i])
i++
}
}
return result.String()
}
func isWhitespace(ch byte) bool {
return ch == ' ' || ch == '\t' || ch == '\n' || ch == '\r'
}
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
}
}
styleMap = Expander(styleMap)
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 "", ""
}
// splitTokens splits a string into tokens, preserving content within parentheses
func Token(start, end, split rune, s string) []string {
var tokens []string
var currentToken strings.Builder
parenDepth := 0
inSpace := true // Track if we're in whitespace
for _, char := range s {
if char == start {
parenDepth++
currentToken.WriteRune(char)
inSpace = false
} else if char == end {
parenDepth--
currentToken.WriteRune(char)
inSpace = false
} else if char == split && parenDepth == 0 {
// If we're at the top level (not inside parentheses) and encounter whitespace
if !inSpace && currentToken.Len() > 0 {
// We've reached the end of a token
tokens = append(tokens, currentToken.String())
currentToken.Reset()
}
inSpace = true
} else {
// Add the character to the current token
currentToken.WriteRune(char)
inSpace = false
}
}
// Add the final token if any
if currentToken.Len() > 0 {
tokens = append(tokens, currentToken.String())
}
for i, v := range tokens {
tokens[i] = strings.TrimSpace(v)
}
return tokens
}
