1 files changed, 90 insertions, 0 deletions
diff --git a/model/version.go b/model/version.go
new file mode 100644
index 000000000..8f0c76ebe
--- /dev/null
+++ b/model/version.go
@@ -0,0 +1,90 @@
+// Copyright (c) 2015 Spinpunch, Inc. All Rights Reserved.
+// See License.txt for license information.
+
+package model
+
+import (
+	"strconv"
+	"strings"
+)
+
+// This is a list of all the current viersions including any patches.
+// It should be maitained in chronological order with most current
+// release at the front of the list.
+var versions = []string{
+	"0.8.0",
+	"0.7.1",
+	"0.7.0",
+	"0.6.0",
+	"0.5.0",
+}
+
+var CurrentVersion string = versions[0]
+var BuildNumber = "_BUILD_NUMBER_"
+var BuildDate = "_BUILD_DATE_"
+var BuildHash = "_BUILD_HASH_"
+
+func SplitVersion(version string) (int64, int64, int64) {
+	parts := strings.Split(version, ".")
+
+	major := int64(0)
+	minor := int64(0)
+	patch := int64(0)
+
+	if len(parts) > 0 {
+		major, _ = strconv.ParseInt(parts[0], 10, 64)
+	}
+
+	if len(parts) > 1 {
+		minor, _ = strconv.ParseInt(parts[1], 10, 64)
+	}
+
+	if len(parts) > 2 {
+		patch, _ = strconv.ParseInt(parts[2], 10, 64)
+	}
+
+	return major, minor, patch
+}
+
+func GetPreviousVersion(currentVersion string) (int64, int64) {
+	currentIndex := -1
+	currentMajor, currentMinor, _ := SplitVersion(currentVersion)
+
+	for index, version := range versions {
+		major, minor, _ := SplitVersion(version)
+
+		if currentMajor == major && currentMinor == minor {
+			currentIndex = index
+		}
+
+		if currentIndex >= 0 {
+			if currentMajor != major || currentMinor != minor {
+				return major, minor
+			}
+		}
+	}
+
+	return 0, 0
+}
+
+func IsCurrentVersion(versionToCheck string) bool {
+	currentMajor, currentMinor, _ := SplitVersion(CurrentVersion)
+	toCheckMajor, toCheckMinor, _ := SplitVersion(versionToCheck)
+
+	if toCheckMajor == currentMajor && toCheckMinor == currentMinor {
+		return true
+	} else {
+		return false
+	}
+}
+
+func IsPreviousVersion(versionToCheck string) bool {
+	toCheckMajor, toCheckMinor, _ := SplitVersion(versionToCheck)
+	prevMajor, prevMinor := GetPreviousVersion(CurrentVersion)
+
+	if toCheckMajor == prevMajor && toCheckMinor == prevMinor {
+		return true
+	} else {
+		return false
+	}
+}