ENH: Allow listpri filtering with priority ranges.

So far, the listpri action only supports a single priority. Allowing priority ranges (e.g. todo.sh listpri A-C @work) is a simple but useful enhancement.

Note: The syntax extension only clashes with the [TERM] filtering in a few corner cases, and this can be worked around (e.g. "todo.sh listpri A-Z A-Z" lists all prioritized tasks containing the text A-Z).

tests/t1250-listpri.sh

@@ -61,6 +61,42 @@ TODO: 0 of 5 tasks shown
 TODO: 0 of 5 tasks shown
 EOF
 
+cat > todo.txt <<EOF
+(B) smell the uppercase Roses +flowers @outside
+(X) clean the house from A-Z
+(C) notice the sunflowers
+(X) listen to music
+buy more records from artists A-Z
+EOF
+test_todo_session 'listpri filtering priority ranges' <<EOF
+>>> todo.sh -p listpri a-c
+1 (B) smell the uppercase Roses +flowers @outside
+3 (C) notice the sunflowers
+--
+TODO: 2 of 5 tasks shown
+
+>>> todo.sh -p listpri c-Z
+3 (C) notice the sunflowers
+2 (X) clean the house from A-Z
+4 (X) listen to music
+--
+TODO: 3 of 5 tasks shown
+
+>>> todo.sh -p listpri A-
+2 (X) clean the house from A-Z
+--
+TODO: 1 of 5 tasks shown
+
+>>> todo.sh -p listpri A-C A-Z
+--
+TODO: 0 of 5 tasks shown
+
+>>> todo.sh -p listpri X A-Z
+2 (X) clean the house from A-Z
+--
+TODO: 1 of 5 tasks shown
+EOF
+
 cat > todo.txt <<EOF
 (B) ccc xxx this line should be third.
 ccc xxx this line should be third.

todo.cfg

@@ -8,6 +8,7 @@ export TODO_DIR=`dirname "$0"`
 export TODO_FILE="$TODO_DIR/todo.txt"
 export DONE_FILE="$TODO_DIR/done.txt"
 export REPORT_FILE="$TODO_DIR/report.txt"
+export TMP_FILE="$TODO_DIR/todo.tmp"
 
 # You can customize your actions directory location
 #export TODO_ACTIONS_DIR="$HOME/.todo.actions.d"

todo.sh

@@ -59,7 +59,7 @@ shorthelp()
 		    listall|lsa [TERM...]
 		    listcon|lsc
 		    listfile|lf [SRC [TERM...]]
-		    listpri|lsp [PRIORITY] [TERM...]
+		    listpri|lsp [PRIORITIES] [TERM...]
 		    listproj|lsprj [TERM...]
 		    move|mv ITEM# DEST [SRC]
 		    prepend|prep ITEM# "TEXT TO PREPEND"
@@ -231,10 +231,11 @@ help()
 		      Without any arguments, the names of all text files in the todo.txt
 		      directory are listed.
 		
-		    listpri [PRIORITY] [TERM...]
+		    listpri [PRIORITIES] [TERM...]
-		    lsp [PRIORITY] [TERM...]
+		    lsp [PRIORITIES] [TERM...]
-		      Displays all tasks prioritized PRIORITY.
+		      Displays all tasks prioritized PRIORITIES.
-		      If no PRIORITY specified, lists all prioritized tasks.
+		      PRIORITIES can be a single one (A) or a range (A-C).
+		      If no PRIORITIES specified, lists all prioritized tasks.
 		      If TERM specified, lists only prioritized tasks that contain TERM(s).
 		      Hides all tasks that contain TERM(s) preceded by a minus sign
 		      (i.e. -TERM).  
@@ -302,6 +303,12 @@ die()
     exit 1
 }
 
+cleanup()
+{
+    [ -f "$TMP_FILE" ] && rm "$TMP_FILE"
+    return 0
+}
+
 cleaninput()
 {
     # Parameters:    When $1 = "for sed", performs additional escaping for use
@@ -664,6 +671,7 @@ ACTION=${1:-$TODOTXT_DEFAULT_ACTION}
 [ -d "$TODO_DIR" ]  || die "Fatal Error: $TODO_DIR is not a directory"
 ( cd "$TODO_DIR" )  || die "Fatal Error: Unable to cd to $TODO_DIR"
 
+[ -w "$TMP_FILE"  ] || echo -n > "$TMP_FILE" || die "Fatal Error: Unable to write to $TMP_FILE"
 [ -f "$TODO_FILE" ] || cp /dev/null "$TODO_FILE"
 [ -f "$DONE_FILE" ] || cp /dev/null "$DONE_FILE"
 [ -f "$REPORT_FILE" ] || cp /dev/null "$REPORT_FILE"
@@ -753,32 +761,13 @@ _list() {
     ## Get our search arguments, if any
     shift ## was file name, new $1 is first search term
 
-    _format "$src" '' "$@"
+    ## Build the filter.
+    filter_command=$(filtercommand "${pre_filter_command:-}" "${post_filter_command:-}" "$@")
 
-    if [ $TODOTXT_VERBOSE -gt 0 ]; then
+    ## Figure out how much padding we need to use
-        echo "--"
+    ## We need one level of padding for each power of 10 $LINES uses
-        echo "$(getPrefix "$src"): ${NUMTASKS:-0} of ${TOTALTASKS:-0} tasks shown"
+    LINES=$( sed -n '$ =' "$src" )
-    fi
+    PADDING=${#LINES}
-}
-getPadding()
-{
-    ## We need one level of padding for each power of 10 $LINES uses.
-    LINES=$(sed -n '$ =' "${1:-$TODO_FILE}")
-    printf %s ${#LINES}
-}
-_format()
-{
-    # Parameters:    $1: todo input file; when empty formats stdin
-    #                $2: ITEM# number width; if empty auto-detects from $1 / $TODO_FILE.
-    # Precondition:  None
-    # Postcondition: $NUMTASKS and $TOTALTASKS contain statistics (unless $TODOTXT_VERBOSE=0).
-
-    FILE=$1
-    shift
-
-    ## Figure out how much padding we need to use, unless this was passed to us.
-    PADDING=${1:-$(getPadding "$FILE")}
-    shift
 
     ## Number the file, then run the filter command,
     ## then sort and mangle output some more
@@ -786,11 +775,7 @@ _format()
         TODOTXT_FINAL_FILTER="cat"
     fi
     items=$(
-        if [ "$FILE" ]; then
+        sed = "$src"                                            \
-            sed = "$FILE"
-        else
-            sed =
-        fi                                                      \
         | sed -e '''
             N
             s/^/     /
@@ -798,9 +783,6 @@ _format()
             /^[ 0-9]\{1,\} *$/d
          '''
     )
-
-    ## Build and apply the filter.
-    filter_command=$(filtercommand "${pre_filter_command:-}" "${post_filter_command:-}" "$@")
     if [ "${filter_command}" ]; then
         filtered_items=$(echo -n "$items" | eval "${filter_command}")
     else
@@ -846,13 +828,16 @@ _format()
     if [ $TODOTXT_VERBOSE -gt 0 ]; then
         NUMTASKS=$( echo -n "$filtered_items" | sed -n '$ =' )
         TOTALTASKS=$( echo -n "$items" | sed -n '$ =' )
+
+        echo "--"
+        echo "$(getPrefix "$FILE"): ${NUMTASKS:-0} of ${TOTALTASKS:-0} tasks shown"
     fi
     if [ $TODOTXT_VERBOSE -gt 1 ]; then
         echo "TODO DEBUG: Filter Command was: ${filter_command:-cat}"
     fi
 }
 
-export -f cleaninput getPrefix getTodo getNewtodo shellquote filtercommand _list getPadding _format die
+export -f cleaninput getPrefix getTodo getNewtodo shellquote filtercommand _list die
 
 # == HANDLE ACTION ==
 action=$( printf "%s\n" "$ACTION" | tr 'A-Z' 'a-z' )
@@ -870,7 +855,9 @@ then
 elif [ -d "$TODO_ACTIONS_DIR" -a -x "$TODO_ACTIONS_DIR/$action" ]
 then
     "$TODO_ACTIONS_DIR/$action" "$@"
-    exit $?
+    status=$?
+    cleanup
+    exit $status
 fi
 
 ## Only run if $action isn't found in .todo.actions.d
@@ -1096,16 +1083,16 @@ case $action in
 "listall" | "lsa" )
     shift  ## Was lsa; new $1 is first search term
 
+    cat "$TODO_FILE" "$DONE_FILE" > "$TMP_FILE"
     TOTAL=$( sed -n '$ =' "$TODO_FILE" )
-    PADDING=${#TOTAL}
 
-    post_filter_command="awk -v TOTAL=$TOTAL -v PADDING=$PADDING '{ \$1 = sprintf(\"%\" PADDING \"d\", (\$1 > TOTAL ? 0 : \$1)); print }' "
+    post_filter_command="awk -v TOTAL=$TOTAL -v PADDING=${#TOTAL} '{ \$1 = sprintf(\"%\" PADDING \"d\", (\$1 > TOTAL ? 0 : \$1)); print }' "
-    cat "$TODO_FILE" "$DONE_FILE" | TODOTXT_VERBOSE=0 _format '' "$PADDING" "$@"
+    TODOTXT_VERBOSE=0 _list "$TMP_FILE" "$@"
 
     if [ $TODOTXT_VERBOSE -gt 0 ]; then
         TDONE=$( sed -n '$ =' "$DONE_FILE" )
-        TASKNUM=$(TODOTXT_PLAIN=1 TODOTXT_VERBOSE=0 _format "$TODO_FILE" 1 "$@" | sed -n '$ =')
+        TASKNUM=$(TODOTXT_PLAIN=1 TODOTXT_VERBOSE=0 _list "$TODO_FILE" "$@" | sed -n '$ =')
-        DONENUM=$(TODOTXT_PLAIN=1 TODOTXT_VERBOSE=0 _format "$DONE_FILE" 1 "$@" | sed -n '$ =')
+        DONENUM=$(TODOTXT_PLAIN=1 TODOTXT_VERBOSE=0 _list "$DONE_FILE" "$@" | sed -n '$ =')
         echo "--"
         echo "$(getPrefix "$TODO_FILE"): ${TASKNUM:-0} of ${TOTAL:-0} tasks shown"
         echo "$(getPrefix "$DONE_FILE"): ${DONENUM:-0} of ${TDONE:-0} tasks shown"
@@ -1138,8 +1125,8 @@ case $action in
 "listpri" | "lsp" )
     shift ## was "listpri", new $1 is priority to list or first TERM
 
-    pri=$(printf "%s\n" "$1" | tr 'a-z' 'A-Z' | grep '^[A-Z]$') && shift || pri="[A-Z]"
+    pri=$(printf "%s\n" "$1" | tr 'a-z' 'A-Z' | grep -e '^[A-Z]$' -e '^[A-Z]-[A-Z]$') && shift || pri="A-Z"
-    post_filter_command="grep '^ *[0-9]\+ (${pri}) '"
+    post_filter_command="grep '^ *[0-9]\+ ([${pri}]) '"
     _list "$TODO_FILE" "$@"
     ;;
 
@@ -1297,3 +1284,5 @@ note: PRIORITY must be anywhere from A to Z."
 * )
     usage;;
 esac
+
+cleanup