golang file 代码
文件路径：/misc/cgo/stdio/testdata/stdio/file.go
/ skip
/ Copyright 2009 The Go Authors. All rights reserved.
/ Use of this source code is governed by a BSD-style
/ license that can be found in the LICENSE file.
/*
A trivial example of wrapping a C library in Go.
For a more complex example and explanation,
see ../gmp/gmp.go.
*/
package stdio
/*
#include <stdio.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <errno.h>
char* greeting = "hello, world";
*/
import "C"
import "unsafe"
type File C.FILE
/ Test reference to library symbol.
/ Stdout and stderr are too special to be a reliable test.
/var = C.environ
func (f *File) WriteString(s string) {
p := C.CString(s)
C.fputs(p, (*C.FILE)(f))
C.free(unsafe.Pointer(p))
f.Flush()
}
func (f *File) Flush() {
C.fflush((*C.FILE)(f))
}
var Greeting = C.GoString(C.greeting)
var Gbytes = C.GoBytes(unsafe.Pointer(C.greeting), C.int(len(Greeting)))