56 lines
888 B
Go
56 lines
888 B
Go
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package main
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// #cgo LDFLAGS: -lreadline
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// #include <stdio.h>
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// #include <stdlib.h>
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// #include <readline/readline.h>
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// #include <readline/history.h>
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import "C"
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import "unsafe"
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func readLine(prompt *string) *string {
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var p *C.char
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//readline allows an empty prompt(NULL)
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if prompt != nil {
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p = C.CString(*prompt)
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}
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ret := C.readline(p)
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if p != nil {
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C.free(unsafe.Pointer(p))
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}
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if ret == nil {
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return nil
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} //EOF
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s := C.GoString(ret)
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C.free(unsafe.Pointer(ret))
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return &s
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}
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func addHistory(s string) {
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p := C.CString(s)
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C.add_history(p)
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C.free(unsafe.Pointer(p))
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}
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func (self *JSRepl) read() {
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prompt := "eth >>> "
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L:
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for {
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switch result := readLine(&prompt); true {
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case result == nil:
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break L //exit loop
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case *result != "": //ignore blank lines
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addHistory(*result) //allow user to recall this line
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self.parseInput(*result)
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}
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}
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}
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