todo.sh

   1 #!/bin/sh
   2 # todo, A command line TODO manager
   3 # Copyright (C) 2008  Alejandro Mery <amery@geeks.cl>
   4 #
   5 # This program is free software: you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation, either version 3 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License
  16 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 todo_usage()
  19 {
  20         local cmd="${0##*/}"
  21
  22         [ $# -eq 0 ] || echo "ERROR: $*" >&2
  23         cat <<-EOT >&2
  24         Usage: $0 [options] [<object>]
  25            ${cmd} [-t <tag>*] [<message>]   - new entry
  26            ${cmd} (-e|--edit) <hash>        - edit an entry
  27            ${cmd} (-T|--tags)               - list tags
  28            ${cmd} (-l|--list) [<tag>*]      - list entries
  29            ${cmd} -L [<tag>*]               - list entry hashes
  30
  31         EOT
  32         exit 1
  33 }
  34
  35 todo_sane_tags()
  36 {
  37         echo "$*" | tr 'a-z' 'A-Z' | sed \
  38                 -e 's/^ *//' -e 's/ *$//' -e 's/  */ /g'
  39 }
  40
  41 todo_entry()
  42 {
  43         local hash="$1" hash_1= entry=
  44         if [ -n "$hash" ]; then
  45                 hash_1=$( echo $hash | cut -c1 )
  46                 entry="$TODODIR/entries/$hash_1/$hash"
  47                 ls -1 "$entry"* 2> /dev/null | head -n 1
  48         fi
  49 }
  50
  51 trap ':' INT
  52
  53 options=$( getopt -o "t:TLle" -l "tags,list,edit" -- "$@" )
  54 if [ $? -ne 0 ]; then
  55         todo_usage
  56 fi
  57
  58 # load new arguments list
  59 eval set -- "$options"
  60
  61 TAGS=
  62 MODE=new
  63
  64 while [ $# -gt 0 ]; do
  65         case "$1" in
  66         -T|--tags)
  67                 MODE=tags ;;
  68         -e|--edit)
  69                 MODE=edit ;;
  70         -l|--list)
  71                 MODE=list ;;
  72         -L)
  73                 MODE=list_raw ;;
  74
  75         -t)     TAGS="$TAGS $2"; shift ;;
  76
  77         --)     shift; break ;;
  78         -*)     todo_usage unknown option "$1"
  79                 ;;
  80         esac
  81         shift
  82 done
  83
  84 TODODIR="$HOME/.todo"
  85
  86 todo_new()
  87 {
  88         TODOTMP="${TMP:-/tmp}/.todo.$$"
  89         DATE=
  90         # find a unique date/hash
  91         #
  92         while [ -z "$DATE" ]; do
  93                 DATE=$(date --rfc-3339=seconds)
  94                 DATEHASH=$( echo "$DATE" | sha1sum | cut -d' ' -f1 )
  95                 DATEHASH_1=$( echo "$DATEHASH" | cut -c 1 )
  96                 ENTRYDIR="$TODODIR/entries/$DATEHASH_1"
  97                 ENTRY="$ENTRYDIR/$DATEHASH"
  98
  99                 if [ -e "$ENTRY" ]; then
 100                         DATE=
 101                         sleep 1
 102                 else
 103                         mkdir -p "$ENTRYDIR"
 104                 fi
 105         done
 106
 107         if [ $# -gt 0 ]; then
 108                 echo "$*" > "$TODOTMP"
 109                 echo "Added: $DATE" >> "$TODOTMP"
 110         else
 111                 echo "Subject: ..." > "$TODOTMP.empty"
 112                 echo "Added: $DATE" >> "$TODOTMP.empty"
 113                 cp "$TODOTMP.empty" "$TODOTMP"
 114
 115                 ${EDITOR:-vi} "$TODOTMP"
 116
 117                 if cmp -s "$TODOTMP" "$TODOTMP.empty"; then
 118                         rm -f "$TODOTMP" "$TODOTMP.empty"
 119                         return
 120                 fi
 121         fi
 122
 123         mv "$TODOTMP" "$ENTRY"
 124
 125         for tag in $(todo_sane_tags $TAGS) INBOX; do
 126                 [ -d "$TODODIR/$tag" ] || mkdir "$TODODIR/$tag"
 127
 128                 ln -s "../entries/$DATEHASH_1/$DATEHASH" "$TODODIR/$tag/$DATEHASH"
 129         done
 130
 131         echo "$DATEHASH"
 132 }
 133
 134 todo_tags()
 135 {
 136         ls -1d "$TODODIR"/* | sed -e "s,^$TODODIR/,," | grep -v '^entries$'
 137 }
 138
 139 todo_list_raw()
 140 {
 141         local tags="$(todo_sane_tags $TAGS $*)"
 142         local tag=
 143         if [ -n "$tags" ]; then
 144                 for tag in $tags; do
 145                         ls -1 "$TODODIR/$tag"/*
 146                 done
 147         else
 148                 ls -1 "$TODODIR/entries"/*/*
 149         fi 2> /dev/null | sed -e 's,.*/,,' | sort -u
 150 }
 151
 152 todo_list()
 153 {
 154         local hash= entry= subject=
 155         for hash in $( $0 -L $(todo_sane_tags $TAGS $* )); do
 156                 entry="$( todo_entry $hash )"
 157                 subject=$( grep '^Subject:' "$entry" | cut -d' ' -f2- )
 158                 [ -n "$subject" ] || subject=$( head -n1 "$entry" )
 159                 [ -n "$subject" ] || subject="empty"
 160
 161                 echo "$hash $subject"
 162         done
 163 }
 164
 165 todo_edit_gc()
 166 {
 167         local entry= hash=
 168         for entry; do
 169                 if [ ! -s "$entry" ]; then
 170                         hash="${entry##*/}"
 171                         rm -f "$entry" "$TODODIR"/*/"$hash"
 172                 fi
 173         done
 174 }
 175
 176 todo_edit()
 177 {
 178         local entries= entry= hash=
 179         for hash; do
 180                 entry="$(todo_entry $hash)"
 181                 [ -z "$entry" ] || entries="$entries '$entry'"
 182         done
 183
 184         [ -n "$entries" ] || return
 185
 186         eval "${EDITOR:-vi} $entries"
 187
 188         eval "todo_edit_gc $entries"
 189 }
 190
 191 case "$MODE" in
 192         new)    todo_new "$*" ;;
 193         edit)   todo_edit "$@" ;;
 194         tags)   todo_tags ;;
 195         list)   todo_list "$*" ;;
 196         list_raw)       todo_list_raw "$*" ;;
 197 esac