fix timeext under 32bit compilation

langext/base62.go

@@ -0,0 +1,74 @@
+package langext
+
+import (
+	"crypto/rand"
+	"errors"
+	"math"
+	"math/big"
+	"strings"
+)
+
+var (
+	base62Base         = uint64(62)
+	base62CharacterSet = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
+)
+
+func RandBase62(rlen int) string {
+	bi52 := big.NewInt(int64(len(base62CharacterSet)))
+
+	randMax := big.NewInt(math.MaxInt64)
+
+	r := ""
+
+	for i := 0; i < rlen; i++ {
+		v, err := rand.Int(rand.Reader, randMax)
+		if err != nil {
+			panic(err)
+		}
+
+		r += string(base62CharacterSet[v.Mod(v, bi52).Int64()])
+	}
+
+	return r
+}
+
+func EncodeBase62(num uint64) string {
+	if num == 0 {
+		return "0"
+	}
+
+	b := make([]byte, 0)
+
+	// loop as long the num is bigger than zero
+	for num > 0 {
+		r := num % base62Base
+
+		num -= r
+		num /= base62Base
+
+		b = append([]byte{base62CharacterSet[int(r)]}, b...)
+	}
+
+	return string(b)
+}
+
+func DecodeBase62(str string) (uint64, error) {
+	if str == "" {
+		return 0, errors.New("empty string")
+	}
+
+	result := uint64(0)
+
+	for _, v := range str {
+		result *= base62Base
+
+		pos := strings.IndexRune(base62CharacterSet, v)
+		if pos == -1 {
+			return 0, errors.New("invalid character: " + string(v))
+		}
+
+		result += uint64(pos)
+	}
+
+	return result, nil
+}

langext/compare.go

@@ -30,3 +30,34 @@ func CompareIntArr(arr1 []int, arr2 []int) bool {
 
 	return false
 }
+
+func CompareArr[T OrderedConstraint](arr1 []T, arr2 []T) bool {
+
+	for i := 0; i < len(arr1) || i < len(arr2); i++ {
+
+		if i < len(arr1) && i < len(arr2) {
+
+			if arr1[i] < arr2[i] {
+				return true
+			} else if arr1[i] > arr2[i] {
+				return false
+			} else {
+				continue
+			}
+
+		}
+
+		if i < len(arr1) {
+
+			return true
+
+		} else { // if i < len(arr2)
+
+			return false
+
+		}
+
+	}
+
+	return false
+}

langext/coords.go

@@ -0,0 +1,21 @@
+package langext
+
+import "math"
+
+func DegToRad(deg float64) float64 {
+	return deg * (math.Pi / 180.0)
+}
+
+func RadToDeg(rad float64) float64 {
+	return rad / (math.Pi * 180.0)
+}
+
+func GeoDistance(lon1 float64, lat1 float64, lon2 float64, lat2 float64) float64 {
+	var d1 = DegToRad(lat1)
+	var num1 = DegToRad(lon1)
+	var d2 = DegToRad(lat2)
+	var num2 = DegToRad(lon2) - num1
+	var d3 = math.Pow(math.Sin((d2-d1)/2.0), 2.0) + math.Cos(d1)*math.Cos(d2)*math.Pow(math.Sin(num2/2.0), 2.0)
+
+	return 6376500.0 * (2.0 * math.Atan2(math.Sqrt(d3), math.Sqrt(1.0-d3)))
+}

langext/rand.go

@@ -3,8 +3,6 @@ package langext
 import (
 	"crypto/rand"
 	"io"
-	"math"
-	"math/big"
 )
 
 func RandBytes(size int) []byte {
@@ -15,24 +13,3 @@ func RandBytes(size int) []byte {
 	}
 	return b
 }
-
-func RandBase62(rlen int) string {
-	ecs := "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
-
-	bi52 := big.NewInt(int64(len(ecs)))
-
-	randMax := big.NewInt(math.MaxInt64)
-
-	r := ""
-
-	for i := 0; i < rlen; i++ {
-		v, err := rand.Int(rand.Reader, randMax)
-		if err != nil {
-			panic(err)
-		}
-
-		r += string(ecs[v.Mod(v, bi52).Int64()])
-	}
-
-	return r
-}

timeext/time.go

@@ -84,7 +84,7 @@ func IsDatePartEqual(a time.Time, b time.Time, tz *time.Location) bool {
 func WithTimePart(base time.Time, hour, minute, second int) time.Time {
 	datepart := TimeToDatePart(base, base.Location())
 
-	delta := time.Duration(hour*int(time.Hour) + minute*int(time.Minute) + second*int(time.Second))
+	delta := time.Duration(int64(hour)*int64(time.Hour) + int64(minute)*int64(time.Minute) + int64(second)*int64(time.Second))
 
 	return datepart.Add(delta)
 }
@@ -94,7 +94,7 @@ func WithTimePart(base time.Time, hour, minute, second int) time.Time {
 func CombineDateAndTime(d time.Time, t time.Time) time.Time {
 	datepart := TimeToDatePart(d, d.Location())
 
-	delta := time.Duration(t.Hour()*int(time.Hour) + t.Minute()*int(time.Minute) + t.Second()*int(time.Second) + t.Nanosecond()*int(time.Nanosecond))
+	delta := time.Duration(int64(t.Hour())*int64(time.Hour) + int64(t.Minute())*int64(time.Minute) + int64(t.Second())*int64(time.Second) + int64(t.Nanosecond())*int64(time.Nanosecond))
 
 	return datepart.Add(delta)
 }
@@ -108,7 +108,7 @@ func IsSunday(t time.Time, tz *time.Location) bool {
 }
 
 func DurationFromTime(hours int, minutes int, seconds int) time.Duration {
-	return time.Duration(hours*int(time.Hour) + minutes*int(time.Minute) + seconds*int(time.Second))
+	return time.Duration(int64(hours)*int64(time.Hour) + int64(minutes)*int64(time.Minute) + int64(seconds)*int64(time.Second))
 }
 
 func Min(a time.Time, b time.Time) time.Time {