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vcs_version.go
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vcs_version.go
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// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package gps
import (
"strings"
"github.com/Masterminds/vcs"
"github.com/pkg/errors"
)
// VCSVersion returns the current project version for an absolute path.
func VCSVersion(path string) (Version, error) {
repo, err := vcs.NewRepo("", path)
if err != nil {
return nil, errors.Wrapf(err, "creating new repo for root: %s", path)
}
ver, err := repo.Current()
if err != nil {
return nil, errors.Wrapf(err, "finding current branch/version for root: %s", path)
}
rev, err := repo.Version()
if err != nil {
return nil, errors.Wrapf(err, "getting repo version for root: %s", path)
}
// First look through tags.
tags, err := repo.Tags()
if err != nil {
return nil, errors.Wrapf(err, "getting repo tags for root: %s", path)
}
// Try to match the current version to a tag.
if contains(tags, ver) {
// Assume semver if it starts with a v.
if strings.HasPrefix(ver, "v") {
return NewVersion(ver).Pair(Revision(rev)), nil
}
return nil, errors.Errorf("version for root %s does not start with a v: %q", path, ver)
}
// Look for the current branch.
branches, err := repo.Branches()
if err != nil {
return nil, errors.Wrapf(err, "getting repo branch for root: %s")
}
// Try to match the current version to a branch.
if contains(branches, ver) {
return NewBranch(ver).Pair(Revision(rev)), nil
}
return Revision(rev), nil
}
// contains checks if a array of strings contains a value
func contains(a []string, b string) bool {
for _, v := range a {
if b == v {
return true
}
}
return false
}