Bashify ddrescue_r

1 files changed, 53 insertions, 15 deletions

diff --git a/ddrescue_r b/ddrescue_r
index f2d55c1..38fddc4 100755
--- a/ddrescue_r
+++ b/ddrescue_r
@@ -1,16 +1,54 @@
-#!/bin/sh
+#!/bin/bash
 
-echo '------------------------------------------------------------------------'
-ilen=(1+${#1})
-find "${1}" -type d -print0 | while read -d $'\0' d;do
-	dname="${d:${ilen}}"
-	echo "*** ${dname}"
-	mkdir -p "${dname}"
-done
-echo "Directory tree restored"
-find "${1}" -type f -print0 | while read -d $'\0' f; do
-	fname="${f:${ilen}}"
-	echo "+++ ${fname}"
-	ddrescue "${1}/${fname}" "${2}/${fname}"
-done
-echo "Done."
+set -o nounset
+set -o errexit
+set -o pipefail
+
+readonly ARGS=( "${@}" );
+
+main()
+{
+  local _input_root;
+  _input_root="${1}"; shift;
+
+  local _output_root;
+  _output_root="${1}"; shift;
+
+  local input_root;
+  input_root="$(readlink --canonicalize-existing "${_input_root}")";
+
+  local output_root;
+  output_root="$(readlink --canonicalize-missing "${_output_root}")";
+
+  local input_length;
+  input_length=$((${#input_root} + 1));
+
+  find "${input_root}" -type d -print0 \
+   | while read -r -d $'\0' d;
+     do
+       local dname;
+       dname="${d:${input_length}}";
+
+       local target;
+       target="${output_root}/${dname}";
+
+	   >&2 echo "*** ${dname}/"
+       mkdir -p "${target}"
+     done
+
+  >&2 echo "Directory tree restored"
+
+  find "${input_root}" -type f -print0 \
+   | while read -r -d $'\0' f;
+     do
+       local fname;
+       fname="${f:${input_length}}";
+
+       >&2 echo "+++ ${fname}"
+	   ddrescue --quiet "${input_root}/${fname}" "${output_root}/${fname}"
+     done
+
+  >&2 echo "Done."
+}
+
+main "${ARGS[@]}"