#!/bin/ksh
##
## SCRIPT: file_ls_stat_info
##
## Where: in $FEDIR/scripts   where $FEDIR=/apps/nns_com/fea
##
##############################################################################
## PURPOSE: This script is used to get the 'ls -l' info for a file, and
##          replace the modify-time info by the 'full'-modify-time info
##          provided by the 'stat' command.
##
##  The 'ls' command, unfortunately, gives the modify-time in two
##  different formats:
##     1) without the year, when the file s less than a year old
##  and
##     2) wthout the 24-hr-time, when the file is more than a year old.
##          
##  This script uses the 'stat' command to get the 'full' modify-time.
##  See example formats in comments below.
##############################################################################
## CALLED BY:  
##            script 'diruse_files_all_levs_agesort_bygui'
##                                              in $FEDIR/scripts 
##            and perhaps eventually in other utility scripts.
##############################################################################
## INPUT:  a filename, preferably fully-qualified.
##
##        NOTE: The input filename is typically coming from a 'find' 
##              command like the example shown in the 'FOR TESTING' 
##              section below.
##############################################################################
## OUTPUT:  a file-info, echoed to 'standard out'.
##############################################################################
## FOR TESTING:  :  Can paste the following at a shell-command prompt:
##  
## find <dirname>  -local  -type f   \
##       -exec  /apps/nns_com/fea/scripts/file_ls_stat_info "{}" \; 
##
## where <dirname> is a directory name like
##       /local/scratch/$USER
##
## NOTE: We need quotes around filenames, to handle file names with
##       embedded spaces.
##############################################################################
## MAINTENANCE HISTORY:
## Written by: Blaise Montandon 28apr2003 
## Updated by: Blaise Montandon 28apr2003  
###############################################################################


FILENAME="$1"

if test "$FILENAME" = ""
then
   echo "
Script $0

needs a filename --- preferably fully-qualified,
                    like intended input from 'find' '{}' symbol
                    for a given fully-qualified directory name.

Exiting ...
"
   exit
fi


###########################################################################
## GET ALL 'ls -l' output for the file.
## EXAMPLE:
## -rw-r--r--    1 bmo01    user          27 Apr 25 10:31 /apps/nns_com/fea/Dscrtest/test_ls_stat
## 
###########################################################################

## FOR TESTING:   (TURN THIS OFF WHEN THROUGH TESTING!!)
#  set -x

# LS_OUT=`ls -l "$FILENAME"`

LS_OUT=`ls -l "$FILENAME" 2> /dev/null`

##########################################################################
## GET 'modify time' 'stat' output for the file.
## EXAMPLE:
##         modify time - Mon Mar 10 16:13:14 2003 <1047330794>
## of
##        inode 29463069; dev 1310721; links 1; size 41688
##         regular; mode is rw-r--r--; uid 2250 (bmo01); gid 20 (user)
##         projid 0        st_fstype: nfs
##         change time - Mon Mar 10 16:13:14 2003 <1047330794>
##         access time - Fri Apr 25 09:41:05 2003 <1051278065>
##         modify time - Mon Mar 10 16:13:14 2003 <1047330794>
## 
##########################################################################

STAT_MODTIME=`stat  "$FILENAME" 2> /dev/null | grep 'modify time -' | awk '{print $8 " " $5 " " $6 " " $7}'`


##########################################################################
## GET  FIELDS 5,1,3,4 of $LS_OUT  (size-in-bytes, permissions,uid,gid)
## EXAMPLE:
## 27 -rw-r--r--bmo01  user
## of
## -rw-r--r--    1 bmo01    user          27 Apr 25 10:31 /apps/nns_com/fea/Dscrtest/test_ls_stat
## 
##########################################################################

LS_REFORMAT_PRE=`echo "$LS_OUT" | awk '{print $5 " " $1 " " $3 " " $4}'`


##########################################################################
## PUT TOGETHER THE 3 VARIABLES
##     $LS_REFORMAT_PRE , $STAT_MODTIME , $FILENAME
## on one line of output.
##
## EXAMPLE output for $FILENAME shown on end of line:
##
## 41688 -rw-r--r-- bmo01 user 2003 Mar 10 16:13:14 /usr/people/bmo01/.profile
##
## 1891 -rwxr-xr-x bmo01 user 2003 Apr 25 10:54:36 ./test_file_ls_stat_info
##
## 1901 -rwxr-xr-x bmo01 user 2003 Apr 25 11:06:23 test_file_ls_stat_info
## 
##########################################################################

## To show a file name with its embedded spaces, the following works.
# eval echo "$LS_REFORMAT_PRE $STAT_MODTIME \"$FILENAME\""

## To show a file name with its embedded spaces, this simpler form also works.
echo "$LS_REFORMAT_PRE $STAT_MODTIME $FILENAME"