/
main.go
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/
main.go
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// Copyright ©2019 The go-hep Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// root-merge merges ROOT files' content into a merged ROOT file.
//
// Usage: root-merge [options] file1.root [file2.root [file3.root [...]]]
//
// ex:
// $> root-merge -o out.root ./testdata/chain.flat.1.root ./testdata/chain.flat.2.root
//
// options:
// -o string
// path to merged output ROOT file (default "out.root")
// -v enable verbose mode
//
package main // import "go-hep.org/x/hep/groot/cmd/root-merge"
import (
"flag"
"fmt"
"log"
"os"
"go-hep.org/x/hep/groot/rcmd"
_ "go-hep.org/x/hep/groot/riofs/plugin/http"
_ "go-hep.org/x/hep/groot/riofs/plugin/xrootd"
)
func main() {
log.SetPrefix("root-merge: ")
log.SetFlags(0)
var (
oname = flag.String("o", "out.root", "path to merged output ROOT file")
verbose = flag.Bool("v", false, "enable verbose mode")
)
flag.Usage = func() {
fmt.Fprintf(
os.Stderr,
`Usage: root-merge [options] file1.root [file2.root [file3.root [...]]]
ex:
$> root-merge -o out.root ./testdata/chain.flat.1.root ./testdata/chain.flat.2.root
options:
`,
)
flag.PrintDefaults()
}
flag.Parse()
if flag.NArg() < 1 {
flag.Usage()
log.Fatalf("missing input files")
}
fnames := flag.Args()
err := rcmd.Merge(*oname, fnames, *verbose)
if err != nil {
log.Fatalf("could not merge ROOT files: %+v", err)
}
}