gh-pages for docs

documentation/commit-gh.sh

@@ -0,0 +1,45 @@
+#!/bin/sh
+set -e -x
+# Usage: commit-gh <sub-directory-prefix> <files...>
+#
+# Creates a commit containing only the files in the sub-directory provided as an argument
+#
+# Does not disturb the working copy or index
+
+prefix="$1"
+shift
+
+# Commit to this branch
+BRANCH=refs/heads/gh-pages
+
+# Use the main branch description as the gh-pages commit message
+MSG=`git describe --tags --always`
+
+# Scratch space
+TDIR=`mktemp -d -p $PWD`
+
+# Automatic cleanup of scratch space
+trap 'rm -rf $TDIR' INT TERM QUIT EXIT
+
+export GIT_INDEX_FILE="$TDIR/index"
+
+# Add listed files to a new (empty) index
+git update-index --add "$@"
+
+# Write the index into the repo, get tree hash
+TREE=`git write-tree --prefix="$prefix"`
+
+echo "TREE $TREE"
+git cat-file -p $TREE
+
+# Create a commit with our new tree
+# Reference current branch head as parent (if any)
+CMT=`git commit-tree -m "$MSG" $TREE`
+
+echo "COMMIT $CMT"
+git cat-file -p $CMT
+
+# Update the branch with the new commit tree hash
+git update-ref $BRANCH $CMT
+
+echo "Done"