fix issue in gstr.RepliaceI; add command gen service for cli

cmd/gf/internal/utility/utils/utils.go

@@ -3,6 +3,7 @@ package utils
 import (
 	"fmt"
 
+	"github.com/gogf/gf/cmd/gf/v2/internal/utility/mlog"
 	"github.com/gogf/gf/v2/os/gproc"
 )
 
@@ -13,14 +14,17 @@ var (
 
 // GoFmt formats the source file using command `gofmt -w -s PATH`.
 func GoFmt(path string) {
-	if gofmtPath != "" {
-		gproc.ShellExec(fmt.Sprintf(`%s -w -s %s`, gofmtPath, path))
+	if gofmtPath == "" {
+		mlog.Debug(`command "gofmt" not found`)
+		return
 	}
+	gproc.ShellExec(fmt.Sprintf(`%s -w -s %s`, gofmtPath, path))
 }
 
 // GoImports formats the source file using command `goimports -w PATH`.
 func GoImports(path string) {
-	if goimportsPath != "" {
-		gproc.ShellExec(fmt.Sprintf(`%s -w %s`, goimportsPath, path))
+	if goimportsPath == "" {
+		mlog.Debug(`command "goimports" not found`)
 	}
+	gproc.ShellExec(fmt.Sprintf(`%s -w %s`, goimportsPath, path))
 }

text/gstr/gstr_replace.go

@@ -33,21 +33,17 @@ func ReplaceI(origin, search, replace string, count ...int) string {
 		return origin
 	}
 	var (
-		searchLength = len(search)
-		searchLower  = strings.ToLower(search)
-		originLower  string
-		pos          int
-		diff         = len(replace) - searchLength
+		searchLength  = len(search)
+		replaceLength = len(replace)
+		searchLower   = strings.ToLower(search)
+		originLower   string
+		pos           int
 	)
 	for {
 		originLower = strings.ToLower(origin)
 		if pos = Pos(originLower, searchLower, pos); pos != -1 {
 			origin = origin[:pos] + replace + origin[pos+searchLength:]
-			if diff < 0 {
-				pos += -diff
-			} else {
-				pos += diff + 1
-			}
+			pos += replaceLength
 			if n--; n == 0 {
 				break
 			}