58de1f7c85
As of go version 1.4 the standard library syscall package is "locked down" and code outside of the standard library is recommended to migrate to the go.sys subrepository. Reference: https://golang.org/s/go1.4-syscall
87 lines
1.5 KiB
Go
87 lines
1.5 KiB
Go
package goreadline
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// sniped from https://github.com/rocaltair/goreadline
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/*
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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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#cgo LDFLAGS: -lreadline
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*/
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import "C"
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import (
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sys "golang.org/x/sys/unix"
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"os"
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"os/signal"
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"unsafe"
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)
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func init() {
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C.rl_catch_sigwinch = 0
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c := make(chan os.Signal, 1)
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signal.Notify(c, sys.SIGWINCH)
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go func() {
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for sig := range c {
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switch sig {
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case sys.SIGWINCH:
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Resize()
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default:
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}
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}
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}()
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}
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func Resize() {
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C.rl_resize_terminal()
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}
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func ReadLine(prompt *string) *string {
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var cPrompt *C.char
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if prompt != nil {
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cPrompt = C.CString(*prompt)
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}
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cLine := C.readline(cPrompt)
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if cPrompt != nil {
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C.free(unsafe.Pointer(cPrompt))
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}
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if cLine == nil {
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return nil
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}
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line := C.GoString(cLine)
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C.free(unsafe.Pointer(cLine))
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return &line
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}
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func AddHistory(line string) {
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cLine := C.CString(line)
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C.add_history(cLine)
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C.free(unsafe.Pointer(cLine))
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}
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func ClearHistory() {
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C.clear_history()
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}
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func WriteHistoryToFile(fileName string) int {
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cFileName := C.CString(fileName)
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err := C.write_history(cFileName)
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C.free(unsafe.Pointer(cFileName))
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return int(err)
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}
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func LoadHistoryFromFile(fileName string) {
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cFileName := C.CString(fileName)
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C.read_history(cFileName)
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C.free(unsafe.Pointer(cFileName))
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}
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func TruncateHistoryFile(fileName string, left int) {
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cFileName := C.CString(fileName)
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cLeft := C.int(left)
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C.history_truncate_file(cFileName, cLeft)
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C.free(unsafe.Pointer(cFileName))
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}
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