From 0dd0300a2333632b3bcc5e42326987d023f7dd66 Mon Sep 17 00:00:00 2001
From: James Barnett <wes@wbarnett.us>
Date: Sat, 3 Jun 2017 20:22:59 -0400
Subject: [PATCH] look for config files in standard location on installation

---
 Makefile            |  2 +-
 README.md           | 13 -------------
 bin/snap-sync       |  5 +++--
 find_snapper_config | 15 +++++++++++++++
 4 files changed, 19 insertions(+), 16 deletions(-)
 create mode 100755 find_snapper_config

diff --git a/Makefile b/Makefile
index 1bef737..0324453 100644
--- a/Makefile
+++ b/Makefile
@@ -25,6 +25,6 @@ SYSTEMD_DIR = $(DESTDIR)$(PREFIX)/lib/systemd/system
 .PHONY: install
 
 install:
-	@sed -i 's@^SNAPPER_CONFIG.*@SNAPPER_CONFIG='$(SNAPPER_CONFIG)'@g' bin/$(PKGNAME)
+	@./find_snapper_config || sed -i 's@^SNAPPER_CONFIG.*@SNAPPER_CONFIG='$(SNAPPER_CONFIG)'@g' bin/$(PKGNAME)
 	@install -Dm755 bin/* -t $(BIN_DIR)/
 	@install -Dm644 systemd/* -t $(SYSTEMD_DIR)/
diff --git a/README.md b/README.md
index 2e5ca02..c133888 100644
--- a/README.md
+++ b/README.md
@@ -22,21 +22,8 @@ snapper is required.
 
 ## Installation
 
-Run:
-
     # make install
 
-By default it will look for the snapper configuration file at
-`/etc/sysconfig/snapper`. To change this pass `SNAPPER_CONFIG` to make
-with the location of the configuration file. For example, with Ubuntu
-you will want to install:
-
-    # make SNAPPER_CONFIG=/etc/default/snapper install
-
-For Arch Linux it would be:
-
-    # make SNAPPER_CONFIG=/etc/conf.d/snapper install
-
 The package is available in the [AUR](https://aur.archlinux.org/packages/snap-sync/).
 
 ## Options
diff --git a/bin/snap-sync b/bin/snap-sync
index 9077ed0..fcfcf81 100755
--- a/bin/snap-sync
+++ b/bin/snap-sync
@@ -29,8 +29,9 @@ set -o errtrace
 version="0.4"
 name="snap-sync"
 
-# The following line is modified by the Makefile
-SNAPPER_CONFIG=/etc/conf.d/snapper
+# The following line is modified by the Makefile or
+# find_snapper_config script
+SNAPPER_CONFIG=/etc/sysconfig/snapper
 
 TMPDIR=$(mktemp -d)
 PIPE=$TMPDIR/$name.out
diff --git a/find_snapper_config b/find_snapper_config
new file mode 100755
index 0000000..a04fae3
--- /dev/null
+++ b/find_snapper_config
@@ -0,0 +1,15 @@
+#!/bin/bash
+
+etcdirs="sysconfig default conf.d"
+
+for x in $etcdirs; do
+    d=/etc/$x/snapper
+    if [[ -f $d ]]; then
+	    sed -i 's@^SNAPPER_CONFIG.*@SNAPPER_CONFIG='$d'@g' bin/snap-sync
+        exit 0
+    fi
+done
+
+printf "==> Unable to find snapper configuration file in a standard location.\n"
+printf "==> Using SNAPPER_CONFIG make variable.\n"
+exit 1