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98 lines
1.7 KiB
Go

package shell
import (
"io"
"strings"
)
type QuoteParameters struct{}
func (p *QuoteParameters) SubParsers() []Parser {
return []Parser{
&BaseParser{
parameters: &DollarParameters{},
},
&BaseParser{
parameters: &BacktickParameters{},
},
&BaseParser{
parameters: &CharParserParameters{},
},
}
}
func (p *QuoteParameters) Enter(i *CharIterator) error {
return i.Next()
}
func (p *QuoteParameters) Supports(charsBefore []rune, r rune) bool {
if r == '"' {
return len(charsBefore) == 0 ||
countBackslashSuffixes(charsBefore)%2 == 0
}
return false
}
func (p *QuoteParameters) ShouldLeave(charsBefore []rune, r rune) bool {
if r == '"' {
return len(charsBefore) == 0 ||
countBackslashSuffixes(charsBefore)%2 == 0
}
return false
}
func (p *QuoteParameters) MakeToken() Token {
return &Quote{}
}
type Quote struct {
BaseToken
}
func (q *Quote) Expand(state State, stdin io.Reader, stderr io.Writer) ([]string, uint8) {
var retcode uint8
var str string
for _, token := range q.Tokens() {
if expand, ok := token.(Expandable); ok {
var expansion []string
expansion, retcode = expand.Expand(state, stdin, stderr)
str += strings.Join(expansion, "")
continue
}
str += token.String()
}
return []string{str}, retcode
}
type SingleQuoteParameters struct {
QuoteParameters
}
type SingleQuote struct {
BaseToken
}
func (p *SingleQuoteParameters) Supports(charsBefore []rune, r rune) bool {
if r == '\'' {
return len(charsBefore) == 0 ||
countBackslashSuffixes(charsBefore)%2 == 0
}
return false
}
func (p *SingleQuoteParameters) ShouldLeave(charsBefore []rune, r rune) bool {
if r == '\'' {
return len(charsBefore) == 0 ||
countBackslashSuffixes(charsBefore)%2 == 0
}
return false
}