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package main
import (
"flag"
"fmt"
"github.com/gobwas/glob"
"os"
"strings"
"testing"
"unicode/utf8"
)
func benchString(r testing.BenchmarkResult) string {
nsop := r.NsPerOp()
ns := fmt.Sprintf("%10d ns/op", nsop)
allocs := "0"
if r.N > 0 {
if nsop < 100 {
// The format specifiers here make sure that
// the ones digits line up for all three possible formats.
if nsop < 10 {
ns = fmt.Sprintf("%13.2f ns/op", float64(r.T.Nanoseconds())/float64(r.N))
} else {
ns = fmt.Sprintf("%12.1f ns/op", float64(r.T.Nanoseconds())/float64(r.N))
}
}
allocs = fmt.Sprintf("%d", r.MemAllocs/uint64(r.N))
}
return fmt.Sprintf("%8d\t%s\t%s allocs", r.N, ns, allocs)
}
func main() {
pattern := flag.String("p", "", "pattern to draw")
sep := flag.String("s", "", "comma separated list of separators")
fixture := flag.String("f", "", "fixture")
verbose := flag.Bool("v", false, "verbose")
flag.Parse()
if *pattern == "" {
flag.Usage()
os.Exit(1)
}
var separators []rune
for _, c := range strings.Split(*sep, ",") {
if r, w := utf8.DecodeRuneInString(c); len(c) > w {
fmt.Println("only single charactered separators are allowed")
os.Exit(1)
} else {
separators = append(separators, r)
}
}
g, err := glob.Compile(*pattern, separators...)
if err != nil {
fmt.Println("could not compile pattern:", err)
os.Exit(1)
}
if !*verbose {
fmt.Println(g.Match(*fixture))
return
}
fmt.Printf("result: %t\n", g.Match(*fixture))
cb := testing.Benchmark(func(b *testing.B) {
for i := 0; i < b.N; i++ {
glob.Compile(*pattern, separators...)
}
})
fmt.Println("compile:", benchString(cb))
mb := testing.Benchmark(func(b *testing.B) {
for i := 0; i < b.N; i++ {
g.Match(*fixture)
}
})
fmt.Println("match: ", benchString(mb))
}
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