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/*
rpminfo displays package information, akin to rpm --info.
usage: rpminfo [package ...]
Example:
$ rpminfo golang-1.6.3-2.el7.x86_64.rpm
Name : golang
Version : 1.6.3
Release : 2.el7
Architecture: x86_64
Group : Unspecified
Size : 11809071
License : BSD and Public Domain
Signature : RSA/SHA256, Sun Nov 20 18:01:16 2016, Key ID 24c6a8a7f4a80eb5
Source RPM : golang-1.6.3-2.el7.src.rpm
Build Date : Tue Nov 15 12:20:30 2016
Build Host : c1bm.rdu2.centos.org
Packager : CentOS BuildSystem <http://bugs.centos.org>
Vendor : CentOS
URL : http://golang.org/
Summary : The Go Programming Language
Description :
The Go Programming Language.
*/
package main
import (
"fmt"
"os"
"strings"
"text/template"
"time"
"github.com/cavaliergopher/rpm"
)
var tmpl = template.Must(template.New("rpminfo").
Funcs(template.FuncMap{
"join": func(a []string) string {
return strings.Join(a, ", ")
},
"strftime": func(t time.Time) string {
return t.Format(rpm.TimeFormat)
},
}).
Parse(`Name : {{ .Name }}
Version : {{ .Version }}
Release : {{ .Release }}
Architecture: {{ .Architecture }}
Group : {{ .Groups | join }}
Size : {{ .Size }}
License : {{ .License }}
Signature : {{ .GPGSignature }}
Source RPM : {{ .SourceRPM }}
Build Date : {{ strftime .BuildTime }}
Build Host : {{ .BuildHost }}
Packager : {{ .Packager }}
Vendor : {{ .Vendor }}
URL : {{ .URL }}
Summary : {{ .Summary }}
Description :
{{ .Description }}
`))
func main() {
if len(os.Args) < 2 || strings.HasPrefix(os.Args[1], "-") {
os.Exit(usage(1))
}
for i, name := range os.Args[1:] {
if i > 0 {
fmt.Printf("\n")
}
p, err := rpm.Open(name)
if err != nil {
fmt.Fprintf(os.Stderr, "error reading %s: %v\n", name, err)
continue
}
if err := tmpl.Execute(os.Stdout, p); err != nil {
fmt.Fprintf(os.Stderr, "error formatting %s: %v\n", name, err)
continue
}
}
}
func usage(exitCode int) int {
w := os.Stdout
if exitCode != 0 {
w = os.Stderr
}
fmt.Fprintf(w, "usage: %v [path ...]\n", os.Args[0])
return exitCode
}
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