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app/service/main/antispam/util/string.go

@@ -0,0 +1,65 @@
+package util
+
+import (
+	"strconv"
+	"strings"
+)
+
+// StrSliToSQLVarchars convert string slice to varchar in sql syntax
+// eg: ["default", "deleted", "modified"] -> " 'default', 'deleted', 'modified' "
+// so that we can used it in 'SELECT * ... WHERE xxx IN ('default', 'deleted', 'modified')'
+func StrSliToSQLVarchars(s []string) string {
+	sli := make([]string, len(s))
+	for i, ss := range s {
+		sli[i] = "'" + ss + "'"
+	}
+	return strings.Join(sli, ",")
+}
+
+// StrToIntSli convert string to int slice, eg: "1,2,3" -> [1,2,3]
+func StrToIntSli(s string, delimiter string) ([]int64, error) {
+	var result []int64
+	sli := strings.Split(s, delimiter)
+	for _, intStr := range sli {
+		i, err := strconv.ParseInt(intStr, 10, 64)
+		if err != nil {
+			return nil, err
+		}
+		result = append(result, i)
+	}
+	return result, nil
+}
+
+// IntSliToSQLVarchars convert int slice to string, eg: [1,2,3] -> "1,2,3"
+func IntSliToSQLVarchars(ints []int64) string {
+	return intSliToStr(ints, ",")
+}
+
+func intSliToStr(ints []int64, delimiter string) string {
+	sli := make([]string, len(ints))
+	for i, ii := range ints {
+		sli[i] = strconv.FormatInt(ii, 10)
+	}
+	return strings.Join(sli, delimiter)
+}
+
+// SameChar check if string consists of same characters
+func SameChar(content string) bool {
+	content = strings.ToLower(content)
+	first := content[0]
+	for _, s := range content {
+		if s != rune(first) {
+			return false
+		}
+	}
+	return true
+}
+
+// StripPrefix remove prefix from string if exists
+func StripPrefix(s string, prefix string, suffix string) string {
+	if strings.HasPrefix(s, prefix) {
+		i := strings.Index(s, suffix)
+		return s[i+1:]
+	}
+	return s
+}