| // Copyright ©2019 The Gonum 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 gonum |
| |
| import ( |
| "fmt" |
| "runtime/debug" |
| ) |
| |
| const root = "gonum.org/v1/gonum" |
| |
| // Version returns the version of Gonum and its checksum. The returned |
| // values are only valid in binaries built with module support. |
| // |
| // If a replace directive exists in the Gonum go.mod, the replace will |
| // be reported in the version in the following format: |
| // |
| // "version=>[replace-path] [replace-version]" |
| // |
| // and the replace sum will be returned in place of the original sum. |
| // |
| // The exact version format returned by Version may change in future. |
| func Version() (version, sum string) { |
| b, ok := debug.ReadBuildInfo() |
| if !ok { |
| return "", "" |
| } |
| for _, m := range b.Deps { |
| if m.Path == root { |
| if m.Replace != nil { |
| switch { |
| case m.Replace.Version != "" && m.Replace.Path != "": |
| return fmt.Sprintf("%s=>%s %s", m.Version, m.Replace.Path, m.Replace.Version), m.Replace.Sum |
| case m.Replace.Version != "": |
| return fmt.Sprintf("%s=>%s", m.Version, m.Replace.Version), m.Replace.Sum |
| case m.Replace.Path != "": |
| return fmt.Sprintf("%s=>%s", m.Version, m.Replace.Path), m.Replace.Sum |
| default: |
| return m.Version + "*", m.Sum + "*" |
| } |
| } |
| return m.Version, m.Sum |
| } |
| } |
| return "", "" |
| } |