pombredanne / rpmlib

RPM package management API language bindings for Go language

rpmlib

RPM API language bindings for Go language

Description

RPM API language bindings for Go language.

Installation

This package depends on RPM C language API libraries. On RedHat/CentOS environment, you can get RPM development libraries by hitting following command.

yum -y install rpm-devel
rpm -qi rpm-devel

On Ubuntu, you can use the following:

sudo apt-get install librpm-dev

Please check the rpm-devel/librpm-dev package version. Currently, my language bindings were tested against RPM lib version 4.14.1.

Then, import to your project

export GOROOT=<Your Go language tools path>
export GOPATH=<Your Go project directory>
go get github.com/necomeshi/rpmlib

Usages

Currently, following APIs are available.

• Searcing and getting installed package information

package main

import (
  "os"
  "fmt"
  "io"
  "github.com/necomeshi/rpmlib"
)

func main() {
  ts, err := rpmlib.NewTransactionSet()
  if err != nil {
    fmt.Fprintf(os.Stderr, "Cannot get transaction set: %s\n", err)
    os.Exit(1)
  }

  defer ts.Free()

  iter, err := ts.SequencialIterator()
  if err != nil {
    fmt.Fprintf(os.Stderr, "Cannot get iterator: %s\n", err)
    os.Exit(1)
  }

  defer iter.Free()

  for {
    h, itr_err := iter.Next()

    if itr_err == io.EOF {
      break
    }

    if itr_err != nil {
      fmt.Fprintf(os.Stderr, "Cannot get next iterator: %s\n", itr_err)
      break
    }

    defer h.Free()

    name, h_err := h.GetString(rpmlib.RPMTAG_NAME)
    if h_err != nil {
      fmt.Fprintf(os.Stderr, "Cannot get name from rpm header: %s\n", h_err)
      break
    }

    fmt.Println(name)

  }
}

• Get a package file information

package main

import (
  "os"
  "fmt"
  "github.com/necomeshi/rpmlib"
)


func main() {

  if len(os.Args) == 0 {
    fmt.Fprintf(os.Stderr, "No package name is specified")
    os.Exit(1)
  }

  ts, err := rpmlib.NewTransactionSet()
  if err != nil {
    fmt.Fprintf(os.Stderr, "Cannot get transaction set: %s\n", err)
    os.Exit(1)
  }

  defer ts.Free()

  h, err := ts.ReadPackageFile(os.Args[1])
  if err != nil {
    fmt.Fprintf(os.Stderr, "Cannot get package rpm header: %s\n", err)
    os.Exit(1)
  }

  defer h.Free()

  name, err := h.GetStringArray(rpmlib.RPMTAG_NAME)
  if err != nil {
    fmt.Fprintf(os.Stderr, "Cannot get package name: %s\n", err)
  }

  fmt.Println(name)

}

Author

Necomeshi

Copyright

Copyright (c) 2018 necomeshi https://github.com/necomesh

see ./LICENSE