Add vendor files for spf13/viper

3 files changed, 158 insertions, 0 deletions

diff --git a/vendor/github.com/kr/fs/LICENSE b/vendor/github.com/kr/fs/LICENSE
new file mode 100644
index 00000000..74487567
--- /dev/null
+++ b/vendor/github.com/kr/fs/LICENSE
@@ -0,0 +1,27 @@
+Copyright (c) 2012 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/github.com/kr/fs/filesystem.go b/vendor/github.com/kr/fs/filesystem.go
new file mode 100644
index 00000000..f1c4805f
--- /dev/null
+++ b/vendor/github.com/kr/fs/filesystem.go
@@ -0,0 +1,36 @@
+package fs
+
+import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
+)
+
+// FileSystem defines the methods of an abstract filesystem.
+type FileSystem interface {
+
+	// ReadDir reads the directory named by dirname and returns a
+	// list of directory entries.
+	ReadDir(dirname string) ([]os.FileInfo, error)
+
+	// Lstat returns a FileInfo describing the named file. If the file is a
+	// symbolic link, the returned FileInfo describes the symbolic link. Lstat
+	// makes no attempt to follow the link.
+	Lstat(name string) (os.FileInfo, error)
+
+	// Join joins any number of path elements into a single path, adding a
+	// separator if necessary. The result is Cleaned; in particular, all
+	// empty strings are ignored.
+	//
+	// The separator is FileSystem specific.
+	Join(elem ...string) string
+}
+
+// fs represents a FileSystem provided by the os package.
+type fs struct{}
+
+func (f *fs) ReadDir(dirname string) ([]os.FileInfo, error) { return ioutil.ReadDir(dirname) }
+
+func (f *fs) Lstat(name string) (os.FileInfo, error) { return os.Lstat(name) }
+
+func (f *fs) Join(elem ...string) string { return filepath.Join(elem...) }
diff --git a/vendor/github.com/kr/fs/walk.go b/vendor/github.com/kr/fs/walk.go
new file mode 100644
index 00000000..6ffa1e0b
--- /dev/null
+++ b/vendor/github.com/kr/fs/walk.go
@@ -0,0 +1,95 @@
+// Package fs provides filesystem-related functions.
+package fs
+
+import (
+	"os"
+)
+
+// Walker provides a convenient interface for iterating over the
+// descendants of a filesystem path.
+// Successive calls to the Step method will step through each
+// file or directory in the tree, including the root. The files
+// are walked in lexical order, which makes the output deterministic
+// but means that for very large directories Walker can be inefficient.
+// Walker does not follow symbolic links.
+type Walker struct {
+	fs      FileSystem
+	cur     item
+	stack   []item
+	descend bool
+}
+
+type item struct {
+	path string
+	info os.FileInfo
+	err  error
+}
+
+// Walk returns a new Walker rooted at root.
+func Walk(root string) *Walker {
+	return WalkFS(root, new(fs))
+}
+
+// WalkFS returns a new Walker rooted at root on the FileSystem fs.
+func WalkFS(root string, fs FileSystem) *Walker {
+	info, err := fs.Lstat(root)
+	return &Walker{
+		fs:    fs,
+		stack: []item{{root, info, err}},
+	}
+}
+
+// Step advances the Walker to the next file or directory,
+// which will then be available through the Path, Stat,
+// and Err methods.
+// It returns false when the walk stops at the end of the tree.
+func (w *Walker) Step() bool {
+	if w.descend && w.cur.err == nil && w.cur.info.IsDir() {
+		list, err := w.fs.ReadDir(w.cur.path)
+		if err != nil {
+			w.cur.err = err
+			w.stack = append(w.stack, w.cur)
+		} else {
+			for i := len(list) - 1; i >= 0; i-- {
+				path := w.fs.Join(w.cur.path, list[i].Name())
+				w.stack = append(w.stack, item{path, list[i], nil})
+			}
+		}
+	}
+
+	if len(w.stack) == 0 {
+		return false
+	}
+	i := len(w.stack) - 1
+	w.cur = w.stack[i]
+	w.stack = w.stack[:i]
+	w.descend = true
+	return true
+}
+
+// Path returns the path to the most recent file or directory
+// visited by a call to Step. It contains the argument to Walk
+// as a prefix; that is, if Walk is called with "dir", which is
+// a directory containing the file "a", Path will return "dir/a".
+func (w *Walker) Path() string {
+	return w.cur.path
+}
+
+// Stat returns info for the most recent file or directory
+// visited by a call to Step.
+func (w *Walker) Stat() os.FileInfo {
+	return w.cur.info
+}
+
+// Err returns the error, if any, for the most recent attempt
+// by Step to visit a file or directory. If a directory has
+// an error, w will not descend into that directory.
+func (w *Walker) Err() error {
+	return w.cur.err
+}
+
+// SkipDir causes the currently visited directory to be skipped.
+// If w is not on a directory, SkipDir has no effect.
+func (w *Walker) SkipDir() {
+	w.descend = false
+}