104 lines
2.1 KiB
Go
104 lines
2.1 KiB
Go
package buildinfo
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import (
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"fmt"
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"io"
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"os"
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"path/filepath"
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"runtime/debug"
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"strings"
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"text/template"
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)
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var (
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Name string = ""
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Version string = ""
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Commit string = ""
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BuildTime string = ""
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OS string = ""
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Arch string = ""
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dependencies = []Dep{}
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PrintFormat = `
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{{- block "version" . -}}
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{{- if .Name -}} {{- .Name -}} {{- end }}
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{{- if .Version }} {{ .Version -}} {{- end }}
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{{- if and (.OS) (.Arch) }} {{ .OS -}} / {{- .Arch -}} {{- end }}
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{{- if (.BuildTime) }} (built at {{ .BuildTime -}}) {{- end }}
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{{- if and (not .Version) (.Commit) (not .BuildTime) }} (commit {{ .Commit -}}) {{- end }}
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{{- if and (not .Version) (.Commit) (.BuildTime) }} (commit {{ .Commit }} built at {{ .BuildTime -}}) {{- end }}
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{{- if and (not .Version) (not .Commit) (.BuildTime) }} (built at {{ .BuildTime -}}) {{- end }}
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{{ end -}}
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{{- block "deps" . -}}
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{{- if and (.ShowDeps) (len .Deps) -}}
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dependecies:
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{{- range .Deps }}
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{{ .Name }} {{ .Version -}}
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{{- end -}}
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{{- end -}}
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{{- end }}
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`
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)
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var (
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fmtTmpl = template.Must(template.New("print-format").Parse(PrintFormat))
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)
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func Print(options Options) {
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Fprint(os.Stdout, options)
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}
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func Fprint(w io.Writer, options Options) {
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if Name == "" {
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Name = filepath.Base(os.Args[0])
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}
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if OS == "" || Arch == "" || options.Deps {
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fillDebugInfo()
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}
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b := new(strings.Builder)
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err := fmtTmpl.Execute(b, newBuildInfo(options))
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if err != nil {
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panic(err)
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}
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fmt.Fprintln(w, strings.TrimSpace(b.String()))
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}
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func overwriteValueIfEmpty(value *string, newValue string) {
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if *value == "" {
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*value = newValue
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}
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}
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func fillDebugInfo() {
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info, ok := debug.ReadBuildInfo()
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if !ok {
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return
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}
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for _, setting := range info.Settings {
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switch setting.Key {
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case "GOOS":
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overwriteValueIfEmpty(&OS, setting.Value)
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case "GOARCH":
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overwriteValueIfEmpty(&Arch, setting.Value)
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case "vcs.revision":
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overwriteValueIfEmpty(&Commit, setting.Value)
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}
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}
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for _, dep := range info.Deps {
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dependencies = append(dependencies, Dep{
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Name: dep.Path,
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Version: dep.Version,
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Sum: dep.Sum,
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})
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}
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}
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