Initial stab at the git-hooks script that will run user, application, and global...

Signed-off-by: Benjamin C Meyer <ben@meyerhome.net>

diff --git a/git-hooks b/git-hooks
new file mode 100755 (executable)
index 0000000..1448348
--- /dev/null
+++ b/git-hooks
@@ -0,0 +1,150 @@
+#!/bin/bash
+#
+# Copyright (c) 2010, Benjamin C. Meyer <ben@meyerhome.net>
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+# 1. Redistributions of source code must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions and the following disclaimer in the
+#    documentation and/or other materials provided with the distribution.
+# 3. All advertising materials mentioning features or use of this software
+#    must display the following acknowledgement:
+#    This product includes software developed by Benjamin C. Meyer.
+# 4. Neither the name of the project nor the
+#    names of its contributors may be used to endorse or promote products
+#    derived from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER ''AS IS'' AND ANY
+# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
+# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+
+GHD=`dirname \`which git-hooks\``
+
+function hook_dirs
+{
+    hook="${1}"
+    echo "${HOME}/.git_hooks/${hook}"
+    echo "${PWD}/git_hooks/${hook}"
+    if [ -z ${GLOBAL_GIT_HOOKS} ] ; then
+        echo "${GHD}/contrib/${hook}"
+    else
+        echo "${GLOBAL_GIT_HOOKS}"
+    fi
+}
+
+function list_hooks_in_dir
+{
+    find "${1}" -executable -type f 2>/dev/null | grep -v "^.$" | sort -V
+}
+
+function run_hooks
+{
+    dir="${1}"
+    shift 1
+    for hook in `list_hooks_in_dir "${dir}"`
+    do
+        echo -e "@@ Running hook: `basename "${hook}"`"
+        ${hook} "$@"
+    done
+}
+
+function run_hook
+{
+    set -e
+    hook=`basename "${1}"`
+    shift 1
+    for dir in `hook_dirs "${hook}"`; do
+        if [ ! -d "${dir}" ] ; then
+            continue
+        fi
+        run_hooks "${dir}" "$@"
+    done
+    set +e
+}
+
+function install_hooks
+{
+    if [ ! -d ".git" ] ; then
+        echo "$1 must be run in the same directory as .git/"
+        return 1
+    fi
+    cd .git/
+    if [ "${1}" = "--install" ] ; then
+        mv hooks hooks.old
+        mkdir hooks
+        cd hooks
+        for file in applypatch-msg commit-msg post-applypatch post-checkout post-commit post-merge post-receive pre-applypatch pre-auto-gc pre-commit prepare-commit-msg pre-rebase pre-receive update
+        do
+            echo '#!/bin/bash
+git-hooks run "$0" "$@"' > "${file}"
+            chmod +x "${file}"
+        done
+    else
+        if [ ! -d hooks.old ] ; then
+            echo "Error, hooks.old doesn't exists, aborting uninstall to not destroy something"
+            return 1
+        fi
+        rm -rf hooks
+        mv hooks.old hooks
+    fi
+}
+
+function list_hooks
+{
+    while [ ! -d ".git" ] ; do
+        cd ..
+    done
+    cat .git/hooks/pre-commit | grep 'git-hooks' > /dev/null 2> /dev/null
+    if [ $? = 0 ] ; then
+        echo -n "Git hooks ARE installed in this project."
+    else
+        echo -n "Git hooks are NOT installed."
+    fi
+
+    echo '  Listing User, Project, and Global hooks:'
+    echo '---'
+    for dir in `hook_dirs`; do
+        echo "${dir}:"
+        for hook in `list_hooks_in_dir "${dir}"` ; do
+            echo -n `basename \`dirname "${hook}"\``
+            echo -e "/`basename "${hook}"` \t- `${hook} --about`"
+        done
+        echo ""
+    done
+}
+
+case $1 in
+    run )
+        if [ ! -z "${GIT_DIR}" ] ; then
+            unset GIT_DIR
+        fi
+        shift
+        run_hook "$@"
+        ;;
+    --install|--uninstall )
+        install_hooks "$1"
+        ;;
+    -h|--help )
+        echo "Git Hooks"
+        echo ""
+        echo "Options:"
+        echo "    --install      Show all achievements."
+        echo "    --uninstall    Publish existing achievements and push to origin."
+        echo "    run [cmd]      Run the hooks for cmd such as pre-commit"
+        echo "    (no arguments) Show current hooks"
+        ;;
+    * )
+        list_hooks
+        ;;
+esac