fix(ssh_config): Improve single quotes detection

handlers/ssh_config/analyzer/quotes.go

@@ -4,6 +4,7 @@ import (
 	"config-lsp/common"
 	commonparser "config-lsp/common/parser"
 	sshconfig "config-lsp/handlers/ssh_config"
+	"config-lsp/utils"
 	"errors"
 	"strings"
 )
@@ -28,9 +29,11 @@ func checkIsUsingDoubleQuotes(
 	value commonparser.ParsedString,
 	valueRange common.LocationRange,
 ) []common.LSPError {
+	quoteRanges := utils.GetQuoteRanges(value.Raw)
 	singleQuotePosition := strings.Index(value.Raw, "'")
 
-	if singleQuotePosition != -1 {
+	// Single quoe
+	if singleQuotePosition != -1 && !quoteRanges.IsCharInside(singleQuotePosition) {
 		return []common.LSPError{
 			{
 				Range: valueRange,

utils/quotes.go

@@ -0,0 +1,51 @@
+package utils
+
+import "slices"
+
+type quoteRange [2]int
+
+func (q quoteRange) IsCharInside(index int) bool {
+	return index >= q[0] && index <= q[1]
+}
+
+type quoteRanges []quoteRange
+
+func (q quoteRanges) IsCharInside(index int) bool {
+	_, found := slices.BinarySearchFunc(
+		q,
+		index,
+		func(current quoteRange, target int) int {
+			if target < current[0] {
+				return -1
+			}
+
+			if target > current[1] {
+				return 1
+			}
+
+			return 0
+		},
+	)
+
+	return found
+}
+
+func GetQuoteRanges(s string) quoteRanges {
+	quoteRanges := make(quoteRanges, 0, 2)
+	inQuote := false
+	var quoteStart int
+
+	for index, c := range s {
+		if c == '"' && (index == 0 || s[index-1] != '\\') {
+			if inQuote {
+				quoteRanges = append(quoteRanges, [2]int{quoteStart, index})
+				inQuote = false
+			} else {
+				quoteStart = index
+				inQuote = true
+			}
+		}
+	}
+
+	return quoteRanges
+}

utils/quotes_test.go

@@ -0,0 +1,23 @@
+package utils
+
+import "testing"
+
+func TestQuotesSimpleExample(
+	t *testing.T,
+) {
+	quoteRanges := GetQuoteRanges(`"hello" "world"`)
+
+	if !(len(quoteRanges) == 2 && quoteRanges[0][0] == 0 && quoteRanges[0][1] == 6 && quoteRanges[1][0] == 8 && quoteRanges[1][1] == 14) {
+		t.Fatalf("Unexpected quote ranges: %v", quoteRanges)
+	}
+}
+
+func TestQuotesEscapedQuotes(
+	t *testing.T,
+) {
+	quoteRanges := GetQuoteRanges(`"hello \"world\""`)
+
+	if !(len(quoteRanges) == 1 && quoteRanges[0][0] == 0 && quoteRanges[0][1] == 16) {
+		t.Fatalf("Unexpected quote ranges: %v", quoteRanges)
+	}
+}