add old go tooling

macho-go/cmd/extract-section/main.go

@@ -0,0 +1,47 @@
+package main
+
+import (
+  "ios-wrapper/pkg/ios/macho"
+	"github.com/alecthomas/kong"
+
+  "os"
+  "fmt"
+  "bytes"
+)
+
+type Argument struct {
+	One string `arg short:"o" required help:"" type:"existingfile"`
+	Two string `arg short:"t" required help:"" type:"existingfile"`
+}
+
+func main() {
+	var cli Argument
+	kong.Parse(&cli)
+
+  compare(cli.One, cli.Two)
+}
+
+func compare(one string, two string) {
+	f1, _ := os.OpenFile(one, os.O_RDONLY, 0644)
+	f2, _ := os.OpenFile(two, os.O_RDONLY, 0644)
+
+  var mc1 macho.MachoContext
+  var mc2 macho.MachoContext
+	mc1.ParseFile(f1, 0)
+	mc2.ParseFile(f2, 0)
+
+  s1 := mc1.FindSection("__text")
+  s2 := mc2.FindSection("__text")
+
+  if (s1.Size() == s2.Size()) {
+    fmt.Println("Size is equal")
+  } else {
+    fmt.Printf("%x <> %x\n", s1.Size(), s2.Size())
+  }
+
+  data1 := mc1.Cut(uint64(s1.Offset()), s1.Size())
+  data2 := mc1.Cut(uint64(s2.Offset()), s2.Size())
+  if (bytes.Compare(data1, data2) == 0) {
+    fmt.Println("Data is equal")
+  }
+}