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@ -11,25 +11,24 @@ import ( |
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"github.com/Unknwon/com" |
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) |
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var ( |
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// Cached Git version.
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gitVer *Version |
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) |
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// Version represents version of Git.
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type Version struct { |
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Major, Minor, Patch int |
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} |
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// GetVersion returns current Git version installed.
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func GetVersion() (Version, error) { |
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stdout, stderr, err := com.ExecCmd("git", "version") |
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if err != nil { |
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return Version{}, errors.New(stderr) |
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} |
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infos := strings.Split(stdout, " ") |
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func ParseVersion(verStr string) (*Version, error) { |
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infos := strings.Split(verStr, ".") |
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if len(infos) < 3 { |
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return Version{}, errors.New("not enough output") |
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return nil, errors.New("incorrect version input") |
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} |
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v := Version{} |
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for i, s := range strings.Split(strings.TrimSpace(infos[2]), ".") { |
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v := &Version{} |
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for i, s := range infos { |
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switch i { |
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case 0: |
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v.Major, _ = com.StrTo(s).Int() |
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@ -41,3 +40,52 @@ func GetVersion() (Version, error) { |
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} |
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return v, nil |
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} |
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func MustParseVersion(verStr string) *Version { |
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v, _ := ParseVersion(verStr) |
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return v |
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} |
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// Compare compares two versions,
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// it returns 1 if original is greater, 1 if original is smaller, 0 if equal.
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func (v *Version) Compare(that *Version) int { |
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if v.Major > that.Major { |
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return 1 |
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} else if v.Major < that.Major { |
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return -1 |
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} |
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if v.Minor > that.Minor { |
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return 1 |
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} else if v.Minor < that.Minor { |
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return -1 |
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} |
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if v.Patch > that.Patch { |
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return 1 |
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} else if v.Patch < that.Patch { |
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return -1 |
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} |
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return 0 |
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} |
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// GetVersion returns current Git version installed.
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func GetVersion() (*Version, error) { |
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if gitVer != nil { |
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return gitVer, nil |
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} |
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stdout, stderr, err := com.ExecCmd("git", "version") |
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if err != nil { |
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return nil, errors.New(stderr) |
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} |
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infos := strings.Split(stdout, " ") |
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if len(infos) < 3 { |
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return nil, errors.New("not enough output") |
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} |
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gitVer, err = ParseVersion(infos[2]) |
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return gitVer, err |
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} |
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