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