From 635c1a4d4ebfca1ba53c63d181a389927a873077 Mon Sep 17 00:00:00 2001
From: Ismael Luceno <ismael@sourcemage.org>
Date: Thu, 18 Feb 2021 20:19:24 +0100
Subject: [PATCH] Replace egrep with case statements

This allows schroot to work on systems with limited implementations like the one
in busybox.

Upstream-Status: Pending
---
 etc/setup.d/20copyfiles    |   13 +++++--------
 etc/setup.d/20nssdatabases |    6 +++---
 2 files changed, 8 insertions(+), 11 deletions(-)

diff --git a/etc/setup.d/20copyfiles b/etc/setup.d/20copyfiles
index cf3ca82f8581..951db72c5d38
--- a/etc/setup.d/20copyfiles
+++ b/etc/setup.d/20copyfiles
@@ -80,14 +80,11 @@ if [ $STAGE = "setup-start" ] || [ $STAGE = "setup-recover" ]; then
     if [ -n "$SETUP_COPYFILES" ]; then
         if [ -f "$SETUP_COPYFILES" ]; then
             while read file; do
-                if echo "$file" | egrep -q '^(#|$)' ; then
-                    continue
-                fi
-                if echo "$file" | grep -q '^/'; then
-                    copy_file "$file" "${CHROOT_PATH}$file"
-                else
-                    warn "Not copying file with relative path: $file"
-                fi
+                case "$file" in
+                    (\#*|'') continue ;;
+                    (/*) copy_file "$file" "${CHROOT_PATH}$file" ;;
+                    (*)  warn "Not copying file with relative path: $file" ;;
+                esac
             done < "$SETUP_COPYFILES"
         else
             fatal "copyfiles file '$SETUP_COPYFILES' does not exist"
diff --git a/etc/setup.d/20nssdatabases b/etc/setup.d/20nssdatabases
index 6f14c81..697bb1e 100755
--- a/etc/setup.d/20nssdatabases
+++ b/etc/setup.d/20nssdatabases
@@ -37,9 +37,9 @@
     if [ -n "$SETUP_NSSDATABASES" ]; then
         if [ -f "$SETUP_NSSDATABASES" ]; then
             while read db; do
-                if echo "$db" | egrep -q '^(#|$)' ; then
-                    continue
-                fi
+                case "$db" in
+                    (\#*|'') continue ;;
+                esac

                 # Device and inode
                 dr=$(/usr/bin/stat --format="%d %i" "/etc/$db")