DecrementDateValue
# Uses a yyyymmdd(.hh) date format.
on add_leading_zeros(i, desired_length)
set i to i as number
set i_length to (length of (i as string))
if i_length ≥ desired_length then return i as string
text -desired_length thru -1 of ("00000000000000000000000000000000" & i)
end add_leading_zeros
on pretty_date(_date)
set _year to year of _date
set _month to my add_leading_zeros((month of _date), 2)
set _day to my add_leading_zeros((day of _date), 2)
_year & _month & _day as string
end pretty_date
on parse_date(s)
set _year to (text 1 thru 4 of s)
set _month to (text 5 thru 6 of s)
set _day to (text 7 thru 8 of s)
date (_month & "/" & _day & "/" & _year)
end parse_date
on valid_date(s)
if s = missing value then return false
try
parse_date(s)
on error
return false
end try
true
end valid_date
tell application "TaskPaper"
tell selected entry
if (exists tag named "date") and ¬
not my valid_date(value of tag named "date") then
delete tag named "date"
end if
if (exists tag named "date") then
set _date to my parse_date(value of tag named "date")
set _date to _date - (1 * days)
if _date + 1.2 * days ≤ (current date) then
# delete if it's after 4:48am of the next day
delete tag named "date"
else
set value of tag named "date" to my pretty_date(_date)
end if
else
make tag with properties {name:"date", value:my pretty_date(current date)}
end if
end tell
end tell
(*
Copyright (c) 2010, Nate Bunnyfield
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer. Redistributions in binary
form must reproduce the above copyright notice, this list of conditions and
the following disclaimer in the documentation and/or other materials provided
with the distribution. Neither the name of the PEEK PEEK POKE nor the names of
its contributors may be used to endorse or promote products derived from this
software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*)
