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|
package main
import (
"bytes"
"encoding/json"
"flag"
"fmt"
"os"
"os/exec"
tfjson "github.com/hashicorp/terraform-json"
)
var (
diff = flag.Bool("diff", false, "diff output instead of writing")
schema = flag.Bool("schema", false, "input is a schema, not a plan")
)
func main() {
flag.Parse()
if flag.NArg() < 1 {
fmt.Fprintf(os.Stderr, "usage: %s FILE\n\n", os.Args[0])
os.Exit(1)
}
path := flag.Arg(0)
f, err := os.Open(path)
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
defer f.Close()
var parsed interface{}
if *schema {
parsed = &tfjson.ProviderSchemas{}
} else {
parsed = &tfjson.Plan{}
}
dec := json.NewDecoder(f)
dec.DisallowUnknownFields()
if err = dec.Decode(parsed); err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
out, err := json.MarshalIndent(parsed, "", " ")
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
out = append(out, byte('\n'))
if *diff {
var diffCmd string
if _, err := exec.LookPath("colordiff"); err == nil {
diffCmd = "colordiff"
} else {
diffCmd = "diff"
}
cmd := exec.Command(diffCmd, "-urN", path, "-")
cmd.Stdin = bytes.NewBuffer(out)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
if err := cmd.Run(); err != nil {
if err.(*exec.ExitError).ProcessState.ExitCode() > 1 {
os.Exit(1)
}
} else {
fmt.Fprintln(os.Stderr, "[no diff]")
}
} else {
os.Stdout.Write(out)
}
}
|
