1 files changed, 93 insertions, 0 deletions
diff --git a/ethereum/repl_darwin.go b/ethereum/repl_darwin.go
new file mode 100644
index 000000000..87da3df1d
--- /dev/null
+++ b/ethereum/repl_darwin.go
@@ -0,0 +1,93 @@
+package main
+
+// #cgo LDFLAGS: -lreadline
+// #include <stdio.h>
+// #include <stdlib.h>
+// #include <readline/readline.h>
+// #include <readline/history.h>
+import "C"
+
+import (
+	"github.com/robertkrimen/otto"
+	"strings"
+	"unsafe"
+)
+
+func readLine(prompt *string) *string {
+	var p *C.char
+
+	//readline allows an empty prompt(NULL)
+	if prompt != nil {
+		p = C.CString(*prompt)
+	}
+
+	ret := C.readline(p)
+
+	if p != nil {
+		C.free(unsafe.Pointer(p))
+	}
+
+	if ret == nil {
+		return nil
+	} //EOF
+
+	s := C.GoString(ret)
+	C.free(unsafe.Pointer(ret))
+	return &s
+}
+
+func addHistory(s string) {
+	p := C.CString(s)
+	C.add_history(p)
+	C.free(unsafe.Pointer(p))
+}
+
+var indentCount = 0
+var str = ""
+
+func (self *JSRepl) setIndent() {
+	open := strings.Count(str, "{")
+	open += strings.Count(str, "(")
+	closed := strings.Count(str, "}")
+	closed += strings.Count(str, ")")
+	indentCount = open - closed
+	if indentCount <= 0 {
+		self.prompt = "> "
+	} else {
+		self.prompt = strings.Join(make([]string, indentCount*2), "..")
+		self.prompt += " "
+	}
+}
+
+func (self *JSRepl) read() {
+L:
+	for {
+		switch result := readLine(&self.prompt); true {
+		case result == nil:
+			break L
+
+		case *result != "":
+			str += *result + "\n"
+
+			self.setIndent()
+
+			if indentCount <= 0 {
+				if *result == "exit" {
+					self.Stop()
+					break L
+				}
+
+				addHistory(str) //allow user to recall this line
+
+				self.parseInput(str)
+
+				str = ""
+			}
+		}
+	}
+}
+
+func (self *JSRepl) PrintValue(value otto.Value) {
+	method, _ := self.re.vm.Get("prettyPrint")
+	method.Call(method, value)
+}