import (
	"fmt"


	"github.com/foo/a"
	"github.com/foo/b"

	"go.pkg.com/bar/x"
	"go.pkg.com/bar/y"
	"context"


	"github.com/foo/c"
	"go.pkg.com/bar/z"
)

package foo

import (
        "fmt"

        "github.com/foo/a"
        "github.com/foo/b"

        "context"

        "go.pkg.com/bar/x"
        "go.pkg.com/bar/y"

        "github.com/foo/c"

        "go.pkg.com/bar/z"
)

package foo

import (
        "context"
        "fmt"

        "github.com/foo/a"
        "github.com/foo/b"
        "github.com/foo/c"

        "go.pkg.com/bar/x"
        "go.pkg.com/bar/y"
        "go.pkg.com/bar/z"
)

// add flag
regroup = flag.Bool("r", false, "remove blank line and regroup imports")


func processFile() {
    if *regroup {
        src = removeBlankLineInImport(src)
    }

    // origin imports.Process
    res, err := imports.Process(target, src, opt)
}

func removeBlankLineInImport(src []byte) []byte {
    // 1. parset AST
    // 2. find first import block start and end line
    // 3. rewrite src, remove blank line in import block
}