[NTLUG:Discuss] verify that a text string is a valid date.

[Richard Geoffrion]

Richard Geoffrion wrote:

>Best viewed in fixed width font....obviously.
>
>  
>

or...maybe NOT so obviously...  let me try again. :)

<code>
#########################################################################
# Extract the date from the file and move pdf to the proper directory   #
#########################################################################

 #extract the date by cutting bytes 1-10 out of the filename
 NEWDIRNAME=`echo $FILE | cut -b 1-10`

#########################################################################
# Verify that the date for NEWDIRNAME is a potentially valid one        #
#########################################################################

 #TODO: Convert $NEWDIRNAME to a julian date and back again and test 
 # for validity

 #check the YearMonth delimiter and the MonthDay delimiter
 YM=`echo $NEWDIRNAME | cut -b 5`
 MD=`echo $NEWDIRNAME | cut -b 8`

 #make sure that both YM and MD are dashes
 if [ "$YM" = "-" -a "$MD" = "-" ] ; then

   #Strip the filename of its date and the the IRFANVIEW's 
   #numbering scheme, then assign it to variable SFILE
        
#################################################################################
# echo $file to get the name, then cut out everything except for bytes 12       #
# and on.. then reverse what's left...then cut everything except for bytes 3    #
# and on (this gets rid of IRFANVIEW's anoying habit of numbering the scans     #
# with 01 02 03..etc... and of course after you get rid of the scan number,you  #
# have to re-reverse it so that it's back to normal.                            #
#################################################################################
  SFILE=`echo $FILE | cut -b 12- | rev | cut -b 3- | rev`
  #<snip the rest of what happens here>
 else    #assume the date format is bad and move the file into an unfiled folder

   #make sure that the unfiled directory exist
   if [ ! -d unfiled ] ; then
    mkdir -p $UNFILED
    chown $OWNER.$GRPOWNER $UNFILED
   fi

  # Set the StrippedFile name so that we remove the IRFANVIEW's numbering scheme
  # but leave the invalid date.
  SFILE=`echo $FILE | rev | cut -b 3- | rev `

  #Set quotes around  $SFILE because it hasn't been 'tr'ed to convert stupid 
  #spaces
  mv $FILE.pdf "$UNFILED/$SFILE.pdf"
 fi
</code>



There..that should fit..