Initial commit: docker compose config

server/utils/strings.go

@@ -0,0 +1,99 @@
+package utils
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+	"unicode"
+)
+
+const (
+	_ = 1.0 << (10 * iota) // ignore first value by assigning to blank identifier
+	KB
+	MB
+	GB
+	TB
+	PB
+	EB
+)
+
+func Format(b float64) string {
+	multiple := ""
+	value := b
+
+	switch {
+	case b >= EB:
+		value /= EB
+		multiple = "EB"
+	case b >= PB:
+		value /= PB
+		multiple = "PB"
+	case b >= TB:
+		value /= TB
+		multiple = "TB"
+	case b >= GB:
+		value /= GB
+		multiple = "GB"
+	case b >= MB:
+		value /= MB
+		multiple = "MB"
+	case b >= KB:
+		value /= KB
+		multiple = "KB"
+	case b == 0:
+		return "0"
+	default:
+		return strconv.FormatInt(int64(b), 10) + "B"
+	}
+
+	return fmt.Sprintf("%.2f%s", value, multiple)
+}
+
+func CommonPrefix(first, second string) string {
+	var result strings.Builder
+
+	minLength := len(first)
+	if len(second) < minLength {
+		minLength = len(second)
+	}
+
+	for i := 0; i < minLength; i++ {
+		if first[i] != second[i] {
+			break
+		}
+		result.WriteByte(first[i])
+	}
+
+	return result.String()
+}
+
+func NumberPrefix(str string) (int, error) {
+	var result strings.Builder
+
+	for i := 0; i < len(str); i++ {
+		if !unicode.IsDigit(rune(str[i])) {
+			break
+		}
+		result.WriteByte(str[i])
+	}
+
+	return strconv.Atoi(result.String())
+}
+
+func CompareStrings(first, second string) bool {
+	commonPrefix := CommonPrefix(first, second)
+	resultStr1 := strings.TrimPrefix(first, commonPrefix)
+	resultStr2 := strings.TrimPrefix(second, commonPrefix)
+	num1, err1 := NumberPrefix(resultStr1)
+	num2, err2 := NumberPrefix(resultStr2)
+
+	if err1 == nil && err2 == nil {
+		return num1 < num2
+	}
+	if err1 == nil {
+		return true
+	} else if err2 == nil {
+		return false
+	}
+	return resultStr1 < resultStr2
+}