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#!/usr/bin/perl -w

use strict;
use File::Basename;
use File::stat;

my $skip = 0;

my $only;
my $file;
my $start;

# Horrible option processing
if ( $ARGV[0] eq "--indexed" ) {
	$only = "indexed";
	$file = $ARGV[1];
	$start = 2;
} elsif ( $ARGV[0] eq "--not-indexed" ) {
	$only = "notindexed";
	$file = $ARGV[1];
	$start = 2;
} else {
	$only = "";
	$file = $ARGV[0];
	$start = 1;
}
my $args = join(" ", splice(@ARGV, $start, scalar(@ARGV)-1));
if ( !($args eq "") ) {
	printf("Extra arguments for hdfsee: %s\n", $args);
} else {
	# Default arguments - feel free to override!
	$args = "--binning=2 --int-boost=10";
	printf("Using default arguments for hdfsee: %s\n", $args);
}

open(FH, $file);
open(TMP, "> list.tmp");

my $statbuf = stat($file);
if ( not $statbuf ) {
	printf("Couldn't stat stream. Check the filename.\n");
	exit;
}
my $stream_mtime = $statbuf->mtime;

my $in_image = 0;
my $line;
my $filename;
my $event = "";
my $indexed;
my $n_seen = 0;

while ( $line = <FH> ) {

	chomp $line;

	if ( $in_image ) {
		printf(TMP "%s\n", $line);
	}

	if ( $line =~ /^Peaks\ from\ peak\ search$/ ) {
		$in_image = 1;
	}

	if ( $line =~ /^Image\ filename:\ (.+)$/ ) {
		$filename = $1;
	}

	if ( $line =~ /^Event:\ (.+)$/ ) {
		$event = $1;
	}

	if ( $line =~ /^indexed_by\ =\ (.*)$/ ) {
		if ( $1 eq "none" ) {
			$indexed = 0;
		} else {
			$indexed = 1;
		}
	}

	if ( $line =~ /^End\ of\ peak\ list$/ ) {

		close(TMP);

		my $show;

		if ( $only eq "indexed" ) {
			if ( $indexed ) {
				$show = 1;
			} else {
				$show = 0;
			}
		} elsif ( $only eq "notindexed" ) {
			if ( $indexed ) {
				$show = 0;
			} else {
				$show = 1;
			}
		} else {
			$show = 1;
		}

		if ( !$show ) {
			printf(STDERR "Not showing %s\n", $filename);
			unlink("list.tmp");
			open(TMP, "> list.tmp");
			$in_image = 0;
			next;
		}

		# Example of how to do "basename" and "prefix":
		# $filename = "images-old/".basename($filename);

		my $ev;
		my $evr;
		if ( $event eq "" ) {
			$ev = "";
			$evr = "";
		} else {
			$ev = " --event=".$event;
			$evr = ", event ".$event;
		}

		$n_seen++;
		if ( $n_seen > $skip ) {

			my $statbuf = stat($filename);
			if ( not $statbuf ) {
				printf("Couldn't stat image file '%s' - does it exist?\n",
				       $filename);
				exit;
			}
			my $image_mtime = $statbuf->mtime;
			if ( $image_mtime > $stream_mtime ) {
				printf(STDERR "WARNING: Image file is newer than stream\n");
			}

			printf(STDERR "Viewing %s%s\n", $filename, $evr);
			system("hdfsee ".$filename.$ev.
			       " --peak-overlay=list.tmp ".$args);
			if ( $? != 0 ) { exit; }
		} else {
			printf(STDERR "Skipping %s%s\n", $filename, $evr);
		}

		unlink("list.tmp");
		open(TMP, "> list.tmp");
		$in_image = 0;
		$event = "";

	}

}