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// 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 Utils "utils"
// ----------------------------------------------------------------------------
// Environment
export var
GOARCH,
GOOS,
GOROOT,
USER string;
func GetEnv(key string) string {
n := len(key);
for i := 0; i < sys.envc(); i++ {
v := sys.envv(i);
if n < len(v) && v[0 : n] == key && v[n] == '=' {
return v[n + 1 : len(v)]; // +1: trim "="
}
}
return "";
}
func init() {
GOARCH = GetEnv("GOARCH");
GOOS = GetEnv("GOOS");
GOROOT = GetEnv("GOROOT");
USER = GetEnv("USER");
}
// ----------------------------------------------------------------------------
// I/O
export const (
MAGIC_obj_file = "@gri-go.7@v0"; // make it clear thar it cannot be a source file
src_file_ext = ".go";
obj_file_ext = ".7";
)
export func ReadObjectFile(filename string) (data string, ok bool) {
data, ok = sys.readfile(filename + obj_file_ext);
magic := MAGIC_obj_file; // TODO remove once len(constant) works
if ok && len(data) >= len(magic) && data[0 : len(magic)] == magic {
return data, ok;
}
return "", false;
}
export func ReadSourceFile(name string) (data string, ok bool) {
name = Utils.TrimExt(name, src_file_ext) + src_file_ext;
data, ok = sys.readfile(name);
return data, ok;
}
export func WriteObjectFile(name string, data string) bool {
name = Utils.TrimExt(Utils.BaseName(name), src_file_ext) + obj_file_ext;
return sys.writefile(name, data);
}
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