github.com/greenboxal/deis@v1.12.1/builder/src/extract-version.go (about)

     1  package main
     2  
     3  import (
     4  	"fmt"
     5  	"io/ioutil"
     6  	"os"
     7  
     8  	"github.com/deis/deis/builder"
     9  )
    10  
    11  func main() {
    12  	if fi, _ := os.Stdin.Stat(); fi.Mode()&os.ModeNamedPipe == 0 {
    13  		fmt.Println("this app only works using the stdout of another process")
    14  		os.Exit(1)
    15  	}
    16  
    17  	bytes, err := ioutil.ReadAll(os.Stdin)
    18  	if err != nil {
    19  		panic(err)
    20  	}
    21  
    22  	version, err := builder.ParseReleaseVersion(bytes)
    23  
    24  	if err != nil {
    25  		fmt.Println(err)
    26  		os.Exit(1)
    27  	}
    28  
    29  	fmt.Println(version)
    30  }