72 lines
2.0 KiB
Go
72 lines
2.0 KiB
Go
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package css
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import (
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"fmt"
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"io"
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"github.com/davecgh/go-spew/spew"
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"github.com/gorilla/css/scanner"
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)
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func ParseCSS(cssString string, log io.Writer) (result []*CSSToken, token *scanner.Token, err error) {
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cssScanner := &CSSParser{scanner.New(cssString)}
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result = make([]*CSSToken, 0)
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io.WriteString(log, "/*******************\n")
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io.WriteString(log, "PARSER LOG:\n")
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token = cssScanner.tolerantRead(result)
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generalLoop:
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for token.Type != scanner.TokenEOF && token.Type != scanner.TokenError {
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token = cssScanner.Next()
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// process token
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switch {
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case token.Type == scanner.TokenIdent,
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token.Type == scanner.TokenChar,
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token.Type == scanner.TokenHash:
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var intermediate []*CSSToken
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rule := &CSSToken{Type: TokenType_Rule, SubTokens: []*CSSToken{}}
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// selectors
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intermediate, token, err = cssScanner.readSelectors(token)
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if err != nil {
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break generalLoop
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}
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rule.SubTokens = append(rule.SubTokens, intermediate...)
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io.WriteString(log, spew.Sdump(intermediate)+"\n")
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// "{"
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if token.Type != scanner.TokenChar || token.Value != "{" {
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err = fmt.Errorf("expected closure begin for rule but got %s", token.String())
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break generalLoop
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}
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rule.SubTokens = append(rule.SubTokens, &CSSToken{Type: TokenType_Native, NativeToken: token})
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// closure content
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intermediate, token, err = cssScanner.readRuleClosure()
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if err != nil {
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break generalLoop
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}
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rule.SubTokens = append(rule.SubTokens, intermediate...)
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// "}"
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if token.Type != scanner.TokenChar || token.Value != "}" {
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err = fmt.Errorf("expected closure end for rule but got %s", token.String())
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break generalLoop
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}
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rule.SubTokens = append(rule.SubTokens, &CSSToken{Type: TokenType_Native, NativeToken: token})
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result = append(result, rule)
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default:
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result = append(result, &CSSToken{Type: TokenType_Native, NativeToken: token})
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}
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io.WriteString(log, token.String()+"\n")
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}
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io.WriteString(log, token.String()+"\n")
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io.WriteString(log, "*******************/\n\n")
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return
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}
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