Add rar command to archive module

This addition tries to use the rar command if unrar is not found.

Signed-off-by: Sorin Ionescu <sorin.ionescu@gmail.com>

modules/archive/README.md

@@ -26,7 +26,7 @@ installed:
   - *.lzma* requires `unlzma`.
   - *.Z* requires `uncompress`.
   - *.zip* requires `unzip`.
-  - *.rar* requires `unrar`.
+  - *.rar* requires `unrar` or `rar`.
   - *.7z* requires `7za`.
   - *.deb* requires `ar`, `tar`.
 

modules/archive/functions/extract

@@ -53,7 +53,9 @@ while (( $# > 0 )); do
     (*.lzma) unlzma "$1" ;;
     (*.Z) uncompress "$1" ;;
     (*.zip) unzip "$1" -d $extract_dir ;;
-    (*.rar) unrar e -ad "$1" ;;
+    (*.rar) unrar &> /dev/null \
+      && unrar e -ad "$1" \
+      || rar e -ad "$1" ;;
     (*.7z) 7za x "$1" ;;
     (*.deb)
       mkdir -p "$extract_dir/control"

modules/archive/functions/ls-archive

@@ -41,7 +41,9 @@ while (( $# > 0 )); do
       || lzcat "$1" | tar x${verbose:+v}f - ;;
     (*.tar) tar t${verbose:+v}f "$1" ;;
     (*.zip) unzip -l${verbose:+v} "$1" ;;
-    (*.rar) unrar ${${verbose:+v}:-l} "$1" ;;
+    (*.rar) unrar &> /dev/null \
+      && unrar ${${verbose:+v}:-l} "$1" \
+      || rar ${${verbose:+v}:-l} "$1" ;;
     (*.7z) 7za l "$1" ;;
     (*)
 			print "$0: cannot list: $1" >&2