103 lines
2.1 KiB
Go
103 lines
2.1 KiB
Go
// Copyright 2021 The golang.design Initiative Authors.
|
|
// All rights reserved. Use of this source code is governed
|
|
// by a MIT license that can be found in the LICENSE file.
|
|
//
|
|
// Written by Changkun Ou <changkun.de>
|
|
|
|
//go:build android
|
|
// +build android
|
|
|
|
package clipboard
|
|
|
|
/*
|
|
#cgo LDFLAGS: -landroid -llog
|
|
|
|
#include <stdlib.h>
|
|
char *clipboard_read_string(uintptr_t java_vm, uintptr_t jni_env, uintptr_t ctx);
|
|
void clipboard_write_string(uintptr_t java_vm, uintptr_t jni_env, uintptr_t ctx, char *str);
|
|
|
|
*/
|
|
import "C"
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"time"
|
|
"unsafe"
|
|
|
|
"golang.org/x/mobile/app"
|
|
)
|
|
|
|
func initialize() error { return nil }
|
|
|
|
func read(t Format) (buf []byte, err error) {
|
|
switch t {
|
|
case FmtText:
|
|
s := ""
|
|
if err := app.RunOnJVM(func(vm, env, ctx uintptr) error {
|
|
cs := C.clipboard_read_string(C.uintptr_t(vm), C.uintptr_t(env), C.uintptr_t(ctx))
|
|
if cs == nil {
|
|
return nil
|
|
}
|
|
|
|
s = C.GoString(cs)
|
|
C.free(unsafe.Pointer(cs))
|
|
return nil
|
|
}); err != nil {
|
|
return nil, err
|
|
}
|
|
return []byte(s), nil
|
|
case FmtImage:
|
|
return nil, errUnsupported
|
|
default:
|
|
return nil, errUnsupported
|
|
}
|
|
}
|
|
|
|
// write writes the given data to clipboard and
|
|
// returns true if success or false if failed.
|
|
func write(t Format, buf []byte) (<-chan struct{}, error) {
|
|
done := make(chan struct{}, 1)
|
|
switch t {
|
|
case FmtText:
|
|
cs := C.CString(string(buf))
|
|
defer C.free(unsafe.Pointer(cs))
|
|
|
|
if err := app.RunOnJVM(func(vm, env, ctx uintptr) error {
|
|
C.clipboard_write_string(C.uintptr_t(vm), C.uintptr_t(env), C.uintptr_t(ctx), cs)
|
|
done <- struct{}{}
|
|
return nil
|
|
}); err != nil {
|
|
return nil, err
|
|
}
|
|
return done, nil
|
|
case FmtImage:
|
|
return nil, errUnsupported
|
|
default:
|
|
return nil, errUnsupported
|
|
}
|
|
}
|
|
|
|
func watch(ctx context.Context, t Format) <-chan []byte {
|
|
recv := make(chan []byte, 1)
|
|
ti := time.NewTicker(time.Second)
|
|
last := Read(t)
|
|
go func() {
|
|
for {
|
|
select {
|
|
case <-ctx.Done():
|
|
close(recv)
|
|
return
|
|
case <-ti.C:
|
|
b := Read(t)
|
|
if b == nil {
|
|
continue
|
|
}
|
|
if bytes.Compare(last, b) != 0 {
|
|
recv <- b
|
|
last = b
|
|
}
|
|
}
|
|
}
|
|
}()
|
|
return recv
|
|
}
|