#!/bin/sh
##
## SCRIPT: forLoop_playListOfMediaFiles.sh
##
## PURPOSE: For a given
##          1) media-player command string (program and some arguments)
##          and
##          2) a text-file name (in which the file contains the
##             fully-qualified names of media files),
##          this script uses a 'for' loop to play each of the
##          media files via the media-player command string.
##
##          It is assumed that the media-player works such that
##          when the user closes the media-player window, the
##          next media-file can be played by a call to the media-player.
##
## CALLED BY: a 'wrapper' Tk script:
##            find_and_mediaPlayer_FrontEnd.tk.
##
##+#######################################################################
## Created: 2013dec15 For use in a calling shell script:
##                       getMediaFiles_andCountListOrPlay.sh
##                    which in turn, is called by a 'wrapper' Tk script:
##                       find_and_mediaPlayer_FrontEnd.tk.
## Changed: 2014apr25 Add TOTALfiles and CNT variables, and add
##                    an 'echo' of those numbers to stdout.
##+#######################################################################

## FOR TESTING: (show statements as they execute)
#  set -x

##+##########################################################
## Put the 2 arguments into variables with descriptive names.
##+##########################################################

PLAYER="$1"
TEMPFILE="$2"

##+##########################################################
## Get the number of files in file $2.
##+##########################################################

TOTALfiles=`cat "$TEMPFILE" | wc -l`

##+##########################################################
## Initialize an image count variable.
##+##########################################################

CNT=1

##+######################################################
## Use the media-player program (and any parms that are to
## be used with it) to play each of the media files whose
## names are in $TEMPFILE.
##+######################################################

for FILENAME in `cat  "$TEMPFILE"`
do
   echo "Showing $CNT of $TOTALfiles."
   $PLAYER "$FILENAME" 2> /dev/null
   CNT=`expr $CNT + 1`
done