mirror of
https://github.com/golang/go
synced 2024-11-20 09:54:45 -07:00
63b332eddd
- require ()'s around composite literals at the if/for/switch control clause level - fixed a nasty bug: passing a value instead of a pointer to a value to an interface variable - and not noticing that the value is copied R=r OCL=25649 CL=25649
85 lines
1.8 KiB
Go
85 lines
1.8 KiB
Go
// 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.
|
|
|
|
package Platform
|
|
|
|
import IO "io"
|
|
import OS "os"
|
|
import Utils "utils"
|
|
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// Environment
|
|
|
|
var
|
|
GOARCH,
|
|
GOOS,
|
|
GOROOT,
|
|
USER string;
|
|
|
|
func init() {
|
|
var e *OS.Error;
|
|
|
|
GOARCH, e = OS.Getenv("GOARCH");
|
|
GOOS, e = OS.Getenv("GOOS");
|
|
GOROOT, e = OS.Getenv("GOROOT");
|
|
USER, e = OS.Getenv("USER");
|
|
}
|
|
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// I/O
|
|
|
|
const (
|
|
MAGIC_obj_file = "@gri-go.7@v0"; // make it clear that it cannot be a source file
|
|
Src_file_ext = ".go";
|
|
Obj_file_ext = ".7";
|
|
)
|
|
|
|
func readfile(filename string) ([]byte, *OS.Error) {
|
|
fd, err := OS.Open(filename, OS.O_RDONLY, 0);
|
|
if err != nil {
|
|
return []byte{}, err;
|
|
}
|
|
var buf [1<<20]byte;
|
|
n, err1 := IO.Readn(fd, buf);
|
|
fd.Close();
|
|
if err1 == IO.ErrEOF {
|
|
err1 = nil;
|
|
}
|
|
return buf[0:n], err1;
|
|
}
|
|
|
|
func writefile(name, data string) *OS.Error {
|
|
fd, err := OS.Open(name, OS.O_WRONLY, 0);
|
|
if err != nil {
|
|
return err;
|
|
}
|
|
n, err1 := IO.WriteString(fd, data);
|
|
fd.Close();
|
|
return err1;
|
|
}
|
|
|
|
func ReadObjectFile(filename string) ([]byte, bool) {
|
|
data, err := readfile(filename + Obj_file_ext);
|
|
magic := MAGIC_obj_file; // TODO remove once len(constant) works
|
|
if err == nil && len(data) >= len(magic) && string(data[0 : len(magic)]) == magic {
|
|
return data, true;
|
|
}
|
|
return []byte{}, false;
|
|
}
|
|
|
|
|
|
func ReadSourceFile(name string) ([]byte, bool) {
|
|
name = Utils.TrimExt(name, Src_file_ext) + Src_file_ext;
|
|
data, err := readfile(name);
|
|
return data, err == nil;
|
|
}
|
|
|
|
|
|
func WriteObjectFile(name string, data string) bool {
|
|
name = Utils.TrimExt(Utils.BaseName(name), Src_file_ext) + Obj_file_ext;
|
|
return writefile(name, data) != nil;
|
|
}
|