Add the pre-commit hook from handel into the repo, so it is easier to use

diff --git a/DSA-META/pre-commit b/DSA-META/pre-commit
new file mode 100755 (executable)
index 0000000..948ca57
--- /dev/null
+++ b/DSA-META/pre-commit
@@ -0,0 +1,147 @@
+#!/bin/bash
+
+if git rev-parse --verify HEAD &>/dev/null; then
+    against=HEAD
+else
+    # Initial commit: diff against an empty tree object
+    against=4b825dc642cb6eb9a060e54bf8d69288fbee4904
+fi
+
+check_puppet_manifest () {
+    local file=$1
+
+    local pp=${workdir}/${file}
+    mkdir -p $(dirname ${pp})
+    git cat-file blob :0:${file} | sed 's/^import .*/#&/' >${pp}
+    trap "rm -f ${pp}" RETURN
+
+    local output=$(puppet apply --noop ${pp} 2>&1)
+    if [ $? -ne 0 ] || [ -n "${output}" ]; then
+        echo '** Syntax check failed:' >&2
+        echo "${output}" >&2
+        return 1
+    fi
+
+    # Check manifests for exactly one class or define per file.
+    case "${file}" in
+        modules/*/manifests/*)
+            if [[ "$(egrep -c '^(class|define) ' ${file})" != "1" ]]; then
+                echo "** Multiple class/defines:" >&2
+                egrep -n '^(class|define) ' ${file} >&2
+                return 1
+            fi
+            ;;
+    esac
+
+    case "${file}" in
+        manifests/site.pp|modules/*/manifests/*) ;;
+        *) return
+    esac
+
+    if [ -x /usr/bin/pcregrep ]; then
+        local wsfail=$({
+            # grep -nPT would be nice. grep -P seems broken on gudeploy01.
+            # Patterns checked for are (in this order):
+            # - leading SPACE
+            # - SPACE followed by TAB
+            # - TAB followed by SPACE
+            # - non-leading TAB (but allow around '#' comment leader)
+            # - trailing whitespace
+            pcregrep -n -e '^ ' -e ' \t' -e '\t ' -e '[^\t#]\t+(?!#)' -e '\s+$' ${pp}
+        })
+        if [[ $(wc -l <${pp}) > $(cat -s ${pp}|wc -l) ]]; then
+            wsfail+="Excess blank line(s). 'cat -s' is your friend."
+        fi
+        if [[ -n "${wsfail}" ]]; then
+            echo '** Bad whitespace (see Manifest Standards):' >&2
+            echo "${wsfail}" >&2
+            return 1
+        fi
+    else
+        echo "Missing pcregrep: apt-get install pcregrep" >&2
+    fi
+
+    case "${file}" in
+        manifests/site.pp|modules/*/manifests/*)
+            puppet-lint --no-hard_tabs-check --no-80chars-check ${pp} >&2 | uniq
+            ;;
+        *)
+            return
+            ;;
+    esac
+
+    return 0
+}
+
+# Check a Puppet template.
+#
+check_puppet_template () {
+    local file=$1
+
+    # Beware of 'Syntax OK' message on success.
+    local output=$((git cat-file blob :0:${file}|erb -x -P -T -|ruby -c >/dev/null) 2>&1)
+    if [[ $? -ne 0 || -n "${output}" ]]; then
+        echo '** Syntax check failed:' >&2
+        echo "${output}" >&2
+        return 1
+    fi
+
+    return 0
+}
+
+readonly failed=$(mktemp ${TMPDIR:-/tmp}/git.puppet.pre-commit.XXXXXXXXXX)
+readonly missing=$(mktemp ${TMPDIR:-/tmp}/git.puppet.pre-commit.XXXXXXXXXX)
+readonly parse=$(mktemp ${TMPDIR:-/tmp}/git.puppet.pre-commit.XXXXXXXXXX)
+readonly retest=$(mktemp ${TMPDIR:-/tmp}/git.puppet.pre-commit.XXXXXXXXXX)
+readonly workdir=$(mktemp -d ${TMPDIR:-/tmp}/git.puppet.pre-commit.XXXXXXXXXX)
+trap "rm -f ${failed} ${missing} ${parse} ${retest}; rm -rf ${workdir}" EXIT
+
+error=0
+warning=0
+for file in $(git diff-index --name-only --diff-filter=AM --cached ${against}); do
+    output=""
+    rc=0
+
+    case "${file}" in
+        manifests/site.pp)
+            output=$(check_puppet_manifest ${file} 2>&1); rc=$?;;
+        modules/*)
+
+            case "${file}" in
+                modules/*/manifests/*)
+                    case "${file}" in
+                        # FIXME: doing this so the whitespace check happens
+                        *.pp) output=$(check_puppet_manifest ${file} 2>&1); rc=$?;;
+                    esac
+                    ;;
+                modules/*/templates/*)
+                    output=$(check_puppet_template ${file} 2>&1); rc=$?;;
+            esac
+            ;;
+
+    esac
+
+    if [[ ${rc} -ne 0 || -n "${output}" ]]; then
+        echo "** ${file}" >&2
+        echo "${output}" >&2
+        if [[ ${file} != *.pp ]]; then
+            error=1
+        # puppet-lint warnings are acceptable.
+        elif [[ -n "$(egrep -v '^WARNING: ' <<<${output})" ]]; then
+            error=1
+        else
+            warning=1
+        fi
+    fi
+done
+
+if [ "$error" -ne 0 ]; then
+    echo "** Please correct the above errors." >&2
+    exit 1
+fi
+
+if [ "$warning" -ne 0 ]; then
+    sleep 5
+fi
+
+exit 0