Initial public commit of mgmt

This is a prototype that i'm attempting to "release early". Expect a lot
of changes! It is intended to be a config management tool that will:

* be event based
* execute actions in parallel
* function as a distributed system

There are a bunch more design ideas going into this, please stay tuned!

misc.go

@@ -0,0 +1,57 @@
+// Mgmt
+// Copyright (C) 2013-2015+ James Shubin and the project contributors
+// Written by James Shubin <james@shubin.ca> and the project contributors
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package main
+
+import (
+	"path"
+	"strings"
+)
+
+// Similar to the GNU dirname command
+func Dirname(p string) string {
+	d, _ := path.Split(path.Clean(p))
+	return d
+}
+
+// Split a path into an array of tokens excluding any trailing empty tokens
+func PathSplit(p string) []string {
+	return strings.Split(path.Clean(p), "/")
+}
+
+// Does path string contain the given path prefix in it?
+func HasPathPrefix(p, prefix string) bool {
+
+	patharray := PathSplit(p)
+	prefixarray := PathSplit(prefix)
+
+	if len(prefixarray) > len(patharray) {
+		return false
+	}
+
+	for i := 0; i < len(prefixarray); i++ {
+		if prefixarray[i] != patharray[i] {
+			return false
+		}
+	}
+
+	return true
+}
+
+func PathIsDir(p string) bool {
+	return p[len(p)-1:] == "/" // a dir has a trailing slash in this context
+}