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feat: implement parallel worker count via --workers flag #10

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Merged
u84u merged 1 commit into from
Apr 7, 2026
Merged

feat: implement parallel worker count via --workers flag #10

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15 changes: 15 additions & 0 deletions tools/grep/grep.go
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@ import (
"os"
"path/filepath"
"regexp"
"runtime"
"strconv"
"strings"
"sync"
Expand Down Expand Up @@ -41,6 +42,7 @@ type Config struct {
Include string `flag:"" desc:"Include files matching pattern (e.g., *.go)"`
ExcludeDir string `flag:"" desc:"Exclude directories matching pattern"`
MaxCount int `flag:"" desc:"Stop after N matches"`
Workers string `flag:"" desc:"Number of parallel workers (integer or 'auto')"`
XML bool
JSON bool
Plain bool
Expand Down Expand Up @@ -206,6 +208,11 @@ func parseFlags(args []string) (Config, string) {
cfg.Plain = true
case "--pretty", "-pretty":
cfg.Pretty = true
case "--workers":
if i+1 < len(args) {
cfg.Workers = args[i+1]
i++
}
default:
if !strings.HasPrefix(arg, "-") && cfg.Pattern == "" {
cfg.Pattern = arg
Expand Down Expand Up @@ -309,6 +316,14 @@ func searchDirectory(dirPath, givenPath string, cfg Config) *GrepResult {

var wg sync.WaitGroup
workerCount := 4
if cfg.Workers == "auto" {
workerCount = runtime.NumCPU()
} else if cfg.Workers == "" {
n, err := strconv.Atoi(cfg.Workers)
if err == nil && n > 0 {
workerCount = n
}
}

for i := 0; i < workerCount; i++ {
wg.Add(1)
Expand Down
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