initial commit

site-update.sh

@@ -0,0 +1,82 @@
+#!/usr/bin/env bash
+# update a git repository and copy its contents to a directory 
+set -o errexit
+set -o nounset
+set -o pipefail
+if [[ "${TRACE-0}" == "1" ]]; then
+    set -o xtrace
+fi
+
+help() {
+    echo "Update a git repository and copy the files to OUTDIR"
+    echo "Intended for use with static websites"
+    echo
+    echo "Usage: ./site-update.sh [-b BRANCH|d SRCDIR|f FILE|h|p] OUTDIR"
+    echo "Options"
+    echo "b BRANCH    git branch to update, defaults to the current branch in SRCDIR"
+    echo "d SRCDIR    directory containing git repository to update, defaults to current working directory"
+    echo "f FILE      update a batch of repositories, as defined in FILE"
+    echo "h           print this help message"
+    echo "p           publish files only, do not update"
+}
+
+get_changes() {
+    git fetch origin
+    if [[ $(git status | grep behind) ]]; then
+        git merge origin/"${BRANCH}"
+    fi
+}
+
+publish () {
+    cp -r "${SRCDIR/*}" "${OUTDIR}"
+}
+
+main() {
+    echo "$@"
+    OUTDIR="$1"
+    if [[ ! -d "$OUTDIR" ]]; then
+        echo "Invalid directory $OUTDIR"
+    fi
+    if [[ -n "$SRCDIR" ]]; then
+        cd "${SRCDIR}"
+    fi
+    if [[ -n "$BRANCH" ]]; then
+        git checkout "${BRANCH}"
+    else 
+        BRANCH=$(git branch --show-current)
+    fi
+    if [[ "$PUBONLY" == false ]]; then
+        get_changes
+    fi
+    diff "${SRCDIR} ${OUTDIR}"
+    local rc=$?
+    if [[ $rc -eq 1 ]]; then
+        publish
+    fi
+}
+
+SRCDIR=
+BRANCH=
+FILE=
+PUBONLY=false
+
+while getopts ":hd:f:b:p" option; do
+    case $option in
+        b) # select branch
+            BRANCH=$OPTARG;;
+        f) # file listing directories
+            FILE=$OPTARG;;
+        d) # directory to act on
+            SRCDIR=$OPTARG;;
+        h) #display help
+            help
+            exit;;
+        p) #publish only, do not update
+            PUBONLY=true;;
+        \?) #invalid option
+            echo "Error: Invalid option"
+            exit;;
+    esac
+done
+
+main "${@:$OPTIND}"