Initial commit

vendor/github.com/hyperhq/hypercli/pkg/version/version.go

@@ -0,0 +1,68 @@
+package version
+
+import (
+	"strconv"
+	"strings"
+)
+
+// Version provides utility methods for comparing versions.
+type Version string
+
+func (v Version) compareTo(other Version) int {
+	var (
+		currTab  = strings.Split(string(v), ".")
+		otherTab = strings.Split(string(other), ".")
+	)
+
+	max := len(currTab)
+	if len(otherTab) > max {
+		max = len(otherTab)
+	}
+	for i := 0; i < max; i++ {
+		var currInt, otherInt int
+
+		if len(currTab) > i {
+			currInt, _ = strconv.Atoi(currTab[i])
+		}
+		if len(otherTab) > i {
+			otherInt, _ = strconv.Atoi(otherTab[i])
+		}
+		if currInt > otherInt {
+			return 1
+		}
+		if otherInt > currInt {
+			return -1
+		}
+	}
+	return 0
+}
+
+// String returns the version string
+func (v Version) String() string {
+	return string(v)
+}
+
+// LessThan checks if a version is less than another
+func (v Version) LessThan(other Version) bool {
+	return v.compareTo(other) == -1
+}
+
+// LessThanOrEqualTo checks if a version is less than or equal to another
+func (v Version) LessThanOrEqualTo(other Version) bool {
+	return v.compareTo(other) <= 0
+}
+
+// GreaterThan checks if a version is greater than another
+func (v Version) GreaterThan(other Version) bool {
+	return v.compareTo(other) == 1
+}
+
+// GreaterThanOrEqualTo checks if a version is greater than or equal to another
+func (v Version) GreaterThanOrEqualTo(other Version) bool {
+	return v.compareTo(other) >= 0
+}
+
+// Equal checks if a version is equal to another
+func (v Version) Equal(other Version) bool {
+	return v.compareTo(other) == 0
+}