github.com/mendersoftware/go-lib-micro@v0.0.0-20240304135804-e8e39c59b148/mongo/migrate/version.go (about)

     1  // Copyright 2023 Northern.tech AS
     2  //
     3  //	Licensed under the Apache License, Version 2.0 (the "License");
     4  //	you may not use this file except in compliance with the License.
     5  //	You may obtain a copy of the License at
     6  //
     7  //	    http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  //	Unless required by applicable law or agreed to in writing, software
    10  //	distributed under the License is distributed on an "AS IS" BASIS,
    11  //	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  //	See the License for the specific language governing permissions and
    13  //	limitations under the License.
    14  package migrate
    15  
    16  import (
    17  	"fmt"
    18  
    19  	"github.com/pkg/errors"
    20  )
    21  
    22  type Version struct {
    23  	Major uint `bson:"major"`
    24  	Minor uint `bson:"minor"`
    25  	Patch uint `bson:"patch"`
    26  }
    27  
    28  func NewVersion(s string) (*Version, error) {
    29  	var maj, min, patch uint
    30  
    31  	n, err := fmt.Sscanf(s, "%d.%d.%d", &maj, &min, &patch)
    32  
    33  	if err != nil {
    34  		return nil, errors.Wrap(err, "failed to parse Version")
    35  	} else if n != 3 {
    36  		return nil, errors.New("invalid semver format")
    37  	}
    38  
    39  	return &Version{Major: maj, Minor: min, Patch: patch}, nil
    40  }
    41  
    42  func MakeVersion(maj uint, min uint, patch uint) Version {
    43  	return Version{Major: maj, Minor: min, Patch: patch}
    44  }
    45  
    46  func (v Version) String() string {
    47  	return fmt.Sprintf("%d.%d.%d", v.Major, v.Minor, v.Patch)
    48  }
    49  
    50  func VersionIsLess(left Version, right Version) bool {
    51  	if left.Major < right.Major {
    52  		return true
    53  	} else if left.Major == right.Major {
    54  		if left.Minor < right.Minor {
    55  			return true
    56  		} else if left.Minor == right.Minor {
    57  			if left.Patch < right.Patch {
    58  				return true
    59  			}
    60  		}
    61  	}
    62  	return false
    63  }