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main.go
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main.go
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package main
import (
"fmt"
"io"
"os"
"github.com/bayashi/xfg/internal/xfgpager"
"github.com/bayashi/xfg/internal/xfgstats"
"github.com/bayashi/xfg/internal/xfgutil"
)
const (
exitOK int = 0
exitErr int = 1
XFG_NO_COLOR_ENV_KEY = "NO_COLOR"
XFG_RC_ENV_KEY = "XFG_RC_FILE_PATH"
)
var funcExit = func(code int) {
os.Exit(code)
}
type runner struct {
out io.Writer
err io.Writer
isTTY bool
exitCode int
homeDir string
procs int
stats *xfgstats.Stats
}
func main() {
procs := xfgutil.Procs()
cli := &runner{
out: os.Stdout,
err: os.Stderr,
isTTY: xfgutil.IsTTY(),
procs: procs,
stats: xfgstats.New(procs),
}
exitCode, message := cli.run()
if exitCode != exitOK {
cli.putErr(fmt.Sprintf("Err: %s", message))
}
funcExit(exitCode)
}
func (cli *runner) run() (int, string) {
if o, err := cli.preXfg(); err != nil {
return exitErr, fmt.Sprintf("on preXfg() : %s", err)
} else {
exitCode, err := cli.xfg(o)
if err != nil {
return exitErr, fmt.Sprintf("on xfg() : %s", err)
}
return exitCode, ""
}
}
func (cli *runner) preXfg() (*options, error) {
homeDir, err := xfgutil.HomeDir()
if err != nil {
return nil, fmt.Errorf("on detecting home directory : %s", err)
}
cli.homeDir = homeDir
cli.stats.Mark("homeDir")
defaultOpt, err := readRC(cli.homeDir)
if err != nil {
return nil, fmt.Errorf("on reading home directory : %s", err)
}
cli.stats.Mark("readRC")
o := cli.parseArgs(defaultOpt)
if !cli.isTTY {
o.NoColor = true // Turn off color
}
if o.Stats {
cli.stats.Mark("parseArgs")
}
if err := o.validateOptions(); err != nil {
return nil, err
}
return o, nil
}
func (cli *runner) xfg(o *options) (int, error) {
x := newX(cli, o)
if err := x.process(); err != nil {
return exitErr, fmt.Errorf("process() : %w", err)
}
if x.options.Stats {
cli.stats.Mark("process")
}
if !x.options.NoPager && cli.isTTY {
out, pagerCloser, err := xfgpager.Pager(cli.out, cli.err, x.result.outputLC)
if err != nil {
return exitErr, fmt.Errorf("wrong pgaer : %w", err)
}
if pagerCloser != nil {
defer pagerCloser()
}
if out != nil {
cli.out = out
}
if x.options.Stats {
cli.stats.Mark("pager")
}
}
if err := cli.showResult(x); err != nil {
return exitErr, fmt.Errorf("showResult() : %w", err)
}
if x.options.Stats {
cli.stats.Mark("showResult")
cli.stats.SetPickedPaths(len(x.result.paths))
cli.stats.Show(cli.out)
}
return cli.exitCode, nil
}