¯\_(ツ)_/¯

go-fast-replace/cmd/corpus/main.go

@@ -3,6 +3,7 @@ package main
 import (
 	"fmt"
 	"log"
+	"strconv"
 	"os"
 	"internal/corpus"
 )
@@ -16,10 +17,16 @@ func main() {
 
 	defer f.Close()
 
-	lines := corpus.MakeCorpus()
+	var total int = 1000
+	if len(os.Args) > 1 {
+		i, err := strconv.Atoi(os.Args[1])
+	    if err != nil {
+	        log.Fatal(err)
+	    }
+	    total = i
+	}
 
-	// Write to file
-	for _, line := range lines {
-       f.WriteString(line + "\n")
-    }
+	corpus := corpus.MakeCorpus(total)
+
+   f.WriteString(corpus)
 }

go-fast-replace/cmd/pairs/main.go

@@ -16,7 +16,16 @@ func main() {
 
 	defer f.Close()
 
-	lines := pairs.MakePairs()
+	var total int = 1000
+	if len(os.Args) > 1 {
+		i, err := strconv.Atoi(os.Args[1])
+	    if err != nil {
+	        log.Fatal(err)
+	    }
+	    total = i
+	}
+
+	lines := pairs.MakePairs(total)
 
 	// Write to file
 	for _, line := range lines {

go-fast-replace/internal/corpus/corpus.go

@@ -3,13 +3,14 @@ package corpus
 import (
 	"fmt"
 	"math/rand"
+	"strings"
 )
 
-func MakeCorpus() []string {
+func MakeCorpus(n int) string {
 	// Generate data
 	lineLength := 100
 	var lines []string
-	for i := 1; i <= 1000; i++ {
+	for i := 1; i <= n; i++ {
 		lines = append(lines, makeLine(i, lineLength))
 	}
 
@@ -19,7 +20,7 @@ func MakeCorpus() []string {
 	    lines[i], lines[j] = lines[j], lines[i]
 	}
 
-	return lines
+	return strings.Join(lines, "\n")
 }
 
 func makeLine(line int, lineLength int) string {

go-fast-replace/internal/pairs/pairs.go

@@ -5,9 +5,9 @@ import (
 	"math/rand"
 )
 
-func MakePairs() []string {
+func MakePairs(n int) []string {
 	var pairs []string
-	for i := 1; i <= 1000; i++ {
+	for i := 1; i <= n; i++ {
 		pairs = append(pairs, makeKey(i) + "," + makeValue())
 	}
 

go-fast-replace/internal/replace/bm_test.go

@@ -2,6 +2,8 @@ package replace
 
 import (
 	"testing"
+	"internal/corpus"
+	"internal/pairs"
 	"internal/replace"
 )
 
@@ -16,3 +18,13 @@ func TestBoyerMooreReplace(t *testing.T) {
 		t.Error("Replacement was wrong.")
 	}
 }
+
+func BenchmarkBoyerMooreReplace(b *testing.B) {
+	var amount int = 1000
+	var corpus string = corpus.MakeCorpus(amount)
+	var pairs []string = pairs.MakePairs(amount)
+
+    for n := 0; n < b.N; n++ {
+        replace.BoyerMooreReplace(corpus, pairs)
+    }
+}