From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001
From: upstream source tree <ports@midipix.org>
Date: Sun, 15 Mar 2015 20:14:05 -0400
Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified
 gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream
 tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.
---
 libgo/go/exec/lp_windows.go | 66 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 libgo/go/exec/lp_windows.go

(limited to 'libgo/go/exec/lp_windows.go')

diff --git a/libgo/go/exec/lp_windows.go b/libgo/go/exec/lp_windows.go
new file mode 100644
index 000000000..7b56afa85
--- /dev/null
+++ b/libgo/go/exec/lp_windows.go
@@ -0,0 +1,66 @@
+// Copyright 2010 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 exec
+
+import (
+	"os"
+	"strings"
+)
+
+func chkStat(file string) bool {
+	d, err := os.Stat(file)
+	if err != nil {
+		return false
+	}
+	return d.IsRegular()
+}
+
+func canExec(file string, exts []string) (string, bool) {
+	if len(exts) == 0 {
+		return file, chkStat(file)
+	}
+	f := strings.ToLower(file)
+	for _, e := range exts {
+		if strings.HasSuffix(f, e) {
+			return file, chkStat(file)
+		}
+	}
+	for _, e := range exts {
+		if f := file + e; chkStat(f) {
+			return f, true
+		}
+	}
+	return ``, false
+}
+
+func LookPath(file string) (string, os.Error) {
+	exts := []string{}
+	if x := os.Getenv(`PATHEXT`); x != `` {
+		exts = strings.Split(strings.ToLower(x), `;`, -1)
+		for i, e := range exts {
+			if e == `` || e[0] != '.' {
+				exts[i] = `.` + e
+			}
+		}
+	}
+	if strings.Contains(file, `\`) || strings.Contains(file, `/`) {
+		if f, ok := canExec(file, exts); ok {
+			return f, nil
+		}
+		return ``, &os.PathError{"lookpath", file, os.ENOENT}
+	}
+	if pathenv := os.Getenv(`PATH`); pathenv == `` {
+		if f, ok := canExec(`.\`+file, exts); ok {
+			return f, nil
+		}
+	} else {
+		for _, dir := range strings.Split(pathenv, `;`, -1) {
+			if f, ok := canExec(dir+`\`+file, exts); ok {
+				return f, nil
+			}
+		}
+	}
+	return ``, &os.PathError{"lookpath", file, os.ENOENT}
+}
-- 
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