[PATCH v2 08/10] make-setup-generated: optionally add GIT metadata

This isn't a full conversion to git based metadata but it allows for
local builds to add git commit and tree status to the final built
product. The normal formal build process is unaffected and uses
manually updated VERSION, REVISION and REVISION-DATE metadata.

Signed-off-by: Alex Bennée <[email protected]>
Message-ID: <[email protected]>
---
 make-setup-generated.sh | 32 ++++++++++++++++++++++++++++----
 makeall.sh              |  4 ++--
 makehtml.sh             |  2 +-
 makepdf.sh              |  2 +-
 4 files changed, 32 insertions(+), 8 deletions(-)

diff --git a/make-setup-generated.sh b/make-setup-generated.sh
index 2c5c7f8..8d33ac5 100755
--- a/make-setup-generated.sh
+++ b/make-setup-generated.sh
@@ -1,16 +1,31 @@
 #! /bin/sh
+#
+# Generate version and metadata preamble for the document
+#
 
 DATESTR=${DATESTR:-`cat REVISION-DATE 2>/dev/null`}
-if [ x"$DATESTR" = x ]; then
-    ISODATE=`git show --format=format:'%cd' --date=iso | head -n 1`
-    DATESTR=`date -d "$DATE" +'%d %B %Y'`
+
+# If a second argument is passed we extract what we can from git
+# metadata (closest lightweight tag) and local tree status. This
+# allows locally generated copies to be tagged appropriately.
+#
+# The formal build process skips this.
+if ! test -z "$2"; then
+    TAG=$(git describe --dirty --tags)
+    # base date on now
+    DATESTR=$(date +'%d %B %Y')
+    COMMIT=$(git rev-parse --short HEAD)
+
+    # Finally check if we have un-committed changes in the tree
+    if ! git diff-index --quiet HEAD -- ; then
+        COMMIT="$COMMIT with local changes"
+    fi
 fi
 
 case "$1" in
     *-wd*)
 	STAGE=wd
 	STAGENAME="Working Draft"
-	WORKINGDRAFT=`basename "$1" | sed 's/.*-wd//'`
 	;;
     *-os*)
 	STAGE=os
@@ -41,6 +56,15 @@ esac
 
 VERSION=`echo "$1"| sed -e 's/virtio-v//' -e 's/-.*//'`
 
+#
+# Finally if we are building a local draft copy append the commit
+# details to the end of the working draft
+#
+if ! test -z "$COMMIT" ; then
+    STAGEEXTRATITLE="$STAGEEXTRATITLE (@ git $COMMIT)"
+fi
+
+
 #Prepend OASIS unless already there
 case "$STAGENAME" in
 	OASIS*)
diff --git a/makeall.sh b/makeall.sh
index 37e6c34..5f5d5dc 100755
--- a/makeall.sh
+++ b/makeall.sh
@@ -3,8 +3,8 @@
 export SPECDOC=${SPECDOC:-`cat REVISION`}
 export DATESTR=${DATESTR:-`cat REVISION-DATE`}
 ./makezip.sh
-./makehtml.sh
-./makepdf.sh
+./makehtml.sh $1
+./makepdf.sh $1
 zip $SPECDOC.zip $SPECDOC.pdf
 echo Generated file $SPECDOC.zip
 echo To change output file name, set SPECDOC environment variable
diff --git a/makehtml.sh b/makehtml.sh
index 45b7080..cf1a8d7 100755
--- a/makehtml.sh
+++ b/makehtml.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 SPECDOC=${SPECDOC:-`cat REVISION`}
-./make-setup-generated.sh "$SPECDOC"
+./make-setup-generated.sh "$SPECDOC" $1
 
 cp virtio-html.tex $SPECDOC.tex
 
diff --git a/makepdf.sh b/makepdf.sh
index 9cae903..bdfb8e5 100755
--- a/makepdf.sh
+++ b/makepdf.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 SPECDOC=${SPECDOC:-`cat REVISION`}
-./make-setup-generated.sh "$SPECDOC"
+./make-setup-generated.sh "$SPECDOC" $1
 
 rm $SPECDOC.aux $SPECDOC.pdf $SPECDOC.out
 xelatex --jobname $SPECDOC virtio.tex
-- 
2.47.3