merge json files into single json with filename minus .log as key

jsonmerge.go

package main

import (
	"encoding/json"
	"flag"
	"log"
	"os"
	"strings"
)

func main() {
	flag.Parse()
	root := make(map[string]interface{})
	args := flag.Args()
	for i := range args {
		fn := args[i]
		f, err := os.Open(fn)
		if err != nil {
			log.Printf("error opening %s: %s", fn, err)
			continue
		}
		if strings.HasSuffix(fn, ".log") {
			fn = fn[:len(fn)-4]
		}
		var this map[string]interface{}
		err = json.NewDecoder(f).Decode(&this)
		if err != nil {
			log.Printf("error decoding %s: %s", fn, err)
			continue
		}
		root[fn] = this
		f.Close()
	}
	err := json.NewEncoder(os.Stdout).Encode(root)
	if err != nil {
		log.Fatalf("error encoding json: %s", err)
	}
}