renew archive-functions and aliases

* new function lsarchive and treearchive
* goarchive is now function not alias with more features

aliases

@@ -63,7 +63,10 @@ alias gopublic='[ -e $(xdg-user-dir PUBLICSHARE) ] && cd $(xdg-user-dir PUBLICSH
 alias gotempl='[ -e $(xdg-user-dir TEMPLATES) ] && cd $(xdg-user-dir TEMPLATES)'
 alias govideo='[ -e $(xdg-user-dir VIDEOS) ] && cd $(xdg-user-dir VIDEOS)'
 alias gowork='[ -e $(xdg-user-dir WORK) ] && cd $(xdg-user-dir WORK)'
-alias goarchive='[ -e $(xdg-user-dir ARCHIVE) ] && cd $(xdg-user-dir ARCHIVE)'
+# goarchive is now in functions.sh
+# alias goarchive='[ -e $(xdg-user-dir ARCHIVE) ] && cd $(xdg-user-dir ARCHIVE)'
+alias lsarchive='[ -e "$(xdg-user-dir ARCHIVE)" ] && ls -l "$(xdg-user-dir ARCHIVE)"'
+alias treearchive='[ -e "$(xdg-user-dir ARCHIVE)" ] && tree "$(xdg-user-dir ARCHIVE)"'
 
 # some special locations
 alias godebian='cd ~/debian'

functions.sh

@@ -1337,6 +1337,43 @@ EOF
 
 }
 
+goarchive () {
+    shopt -s extglob
+    if [ ${#:-0} -gt 0 ]
+    then
+        case "$1" in
+            -h)
+                cat << EOF
+    Usage: goarchive
+           goarchive [0-9][0-9]*
+           goarchive [YYYY-MM-DD]
+           
+    if used without argument, change to $(xdg-user-dir ARCHIVE)
+    if argument is an positive integer, go number of snapshots back (see a list of possible snapshots)
+    if argument is [YYYY-MM-DD], go to snapshot from date
+
+EOF
+                ;;
+
+            +([0-9]) )
+                ardir="$(xdg-user-dir ARCHIVE)/$(ls $(xdg-user-dir ARCHIVE) |tail -n${1:-1}|head -n1)"
+                cat << EOF
+last few archives:
+$(ls $(xdg-user-dir ARCHIVE) | \
+tail -n $(( ${1:-1} * 2 )) | \
+while read i;do if [ "${i}" = "$(basename ${ardir})" ]; then printf " * %s <- chosen\n" "$i"; else printf "   %s\n" "$i";fi;done)
+EOF
+                ;;
+            *)
+                ardir="$(xdg-user-dir ARCHIVE)/${1}"
+                ;;
+        esac
+        [ -e ${ardir} ] && cd ${ardir}
+    else
+        [ -e "$(xdg-user-dir ARCHIVE)" ] && cd "$(xdg-user-dir ARCHIVE)"
+    fi
+}
+
 #EOF