From 848184577a04bee1ccd8d424b17f5e19acb297f1 Mon Sep 17 00:00:00 2001
From: Brandon Witham <brandon.witham@digitalglobe.com>
Date: Thu, 23 Feb 2017 13:08:56 -0500
Subject: [PATCH] restore GitVersion

---
 docs/Makefile             |  2 +-
 scripts/git/GitVersion.sh | 48 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 49 insertions(+), 1 deletion(-)
 create mode 100755 scripts/git/GitVersion.sh

diff --git a/docs/Makefile b/docs/Makefile
index d977687186..be33fb324b 100644
--- a/docs/Makefile
+++ b/docs/Makefile
@@ -11,7 +11,7 @@ endif
 define buildAsciidoc
 	mkdir -p tmp
 	git log --simplify-by-decoration --no-merges "--pretty=%h|$$|%ct|$$|%s|$$|%aN" `find $(filter-out tmp/asciidoc-config,$^) || true` | node ParseRevisions.js > $(patsubst %.asciidoc,%-docinfo.xml,$<)
-	@REVNUMBER=`$$HOOT_HOME/scripts/GitVersion.sh` ; \
+	@REVNUMBER=`$$HOOT_HOME/scripts/git/GitVersion.sh` ; \
 	REVDATE=`date -d @$$(git log -n 1 "--pretty=%at" ../.) "+%B %e, %Y"`; \
 	a2x -a docinfo --dblatex-opts "-P latex.output.revhistory=0 -P latex.unicode.use=1 -s styles/nga.sty --param doc.publisher.show=0" -a HasLatexMath -a "revdate=v$$REVNUMBER, $$REVDATE" $(A2X_QUIET) -f pdf $<
 	a2x -a docinfo --dblatex-opts "-P latex.output.revhistory=0 -P latex.unicode.use=1 -s styles/nga.sty --param doc.publisher.show=0" -a "revdate=v$$REVNUMBER, $$REVDATE" $(A2X_QUIET) -f text $<
diff --git a/scripts/git/GitVersion.sh b/scripts/git/GitVersion.sh
new file mode 100755
index 0000000000..422d129d4f
--- /dev/null
+++ b/scripts/git/GitVersion.sh
@@ -0,0 +1,48 @@
+#!/bin/bash
+
+# Provides a slightly more pleasant version number than the typical hash value.
+#
+# Optionally takes a list of files. If provided, then the latest commit of
+# any of the files is used for calculating the version number.
+#
+# If there is no version information then UNKNOWN is returned.
+
+set -e
+
+DEF_VER=UNKNOWN-VERSION
+
+LF='
+'
+
+# Is this a git repo? Do we have git?
+if command -v git &> /dev/null; then
+    if git status &> /dev/null; then
+        HAS_GIT=true
+    fi
+fi
+
+REVISION=`git log -n 1 --pretty=%h $*`
+
+# First see if there is a version file (included in release tarballs),
+# then try git-describe, then default.
+if test "$HAS_GIT" = "true" &&
+        VN=$(git describe --match "v[0-9]*" --abbrev=7 --tags $REVISION 2>/dev/null) &&
+        case "$VN" in
+        *$LF*) (exit 1) ;;
+        v[0-9]*)
+                git update-index -q --refresh
+                test -z "$(git diff-index --name-only HEAD --)" ||
+                VN="$VN-dirty" ;;
+        esac
+then
+        #VN=$(echo "$VN" | sed -e 's/-/./g');
+        PASS=1
+else
+        VN="$DEF_VER"
+fi
+
+# VN is the full version number. E.g. 0.1.0 if it is a tag. 0.1.0-2-deadbeef 
+# if it is not a tagged version
+VN=$(expr "$VN" : v*'\(.*\)')
+
+echo $VN