shapor / bashgal
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Description: web gallery generating bash script using css spriting
Homepage: http://shapor.com/bashgal
Clone URL: git://github.com/shapor/bashgal.git
Click here to lend your support to: bashgal and make a donation at www.pledgie.com !
bashgal / bashgal
100755 125 lines (115 sloc) 4.58 kb
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#!/bin/bash
# bashgal - http://shapor.com/bashgal
# Author: Shapor Naghibzadeh <shapor@gmail.com>
 
# configuration section
convert="nice gm convert" # GraphicsMagick (http://www.graphicsmagick.org) > ImageMagick
jhead="nice jhead"
fadvise="nice fadvise -dontneed "
thumbx=133 thumby=100
sheetx=1200 sheety=10000
heights=(480 600 800 1024)
thumbdir=.th sheetdir=.sh
index=index.html
defaultres=600
tmpsheet=/tmp/sheet-$$.jpg tmprow=/tmp/row-$$.jpg tmpindex=/tmp/index-$$.html
# end configuration section
 
function debug {
	return 0 # 0=enable, 1=disable debugging output
}
 
[[ $# -gt 1 ]] && { echo "$0: usage $0 [directory]"; exit 1; }
[[ $# -eq 0 ]] || pushd $1 >/dev/null || exit 1
 
[[ -d $thumbdir ]] || mkdir $thumbdir || exit 2
for res in ${heights[*]}; do
	[[ -d .$res/.html ]] || mkdir -p .$res/.html || exit 3
	echo "<html><body><style>div{height:100px;margin:1;padding:0;position:relative;overflow:hidden;float:left}</style>" >$tmpindex.$res
	for size in ${heights[*]}; do
		[[ $size == $res ]] && echo -n "$size " || echo -n "<a href='.$size.$index'>$size</a> "
	done >>$tmpindex.$res
done
 
numfiles=0
for filename in *.[jJ][pP][gG]; do
	debug && echo -n "$filename: "
	$jhead -autorot "$filename" 2>/dev/null | grep ^Modified: >/dev/null && echo -n "rotated "
	[[ -s $thumbdir/$filename ]] || $convert -scale x$thumby "$filename" "$thumbdir/$filename" || continue
	filelist[$numfiles]=$filename
	let numfiles++
	for res in ${heights[*]}; do
		debug && echo -n "$res "
		if [[ ! -s .$res/$filename ]]; then
			$convert -scale x$res "$filename" ".$res/$filename"
			$fadvise ".$res/$filename" 2>/dev/null
		fi
	done
	$fadvise "$filename" 2>/dev/null
	debug && echo
done
 
# The rest is basically an optimization to take advantage of spriting css
# generate thumbnail sheets up to sheetx x sheety size
[[ -d $sheetdir ]] || mkdir $sheetdir || exit 10
sheet=0 cury=0 curx=0 file=0
while [[ $file -lt $numfiles ]]; do
	filename=${filelist[$file]}
	thumb=$thumbdir/$filename
	twidth=$($jhead "$thumb" 2>/dev/null | awk '($1 == "Resolution") {print $3}')
 
	# generate the thumbnail sheets
	if [[ $((curx + twidth)) -gt $sheetx ]]; then
		debug && echo 
		$convert -append $tmpsheet $tmprow $tmpsheet 2>/dev/null
		rm $tmprow
		curx=0
		cury=$((cury + thumby))
		if [[ $((cury + thumby)) -gt $sheety ]]; then
			debug && echo saving sheet $sheet
			mv $tmpsheet $sheetdir/$sheet.jpg
			cury=0
			let sheet++
		fi
	fi
	debug && echo -n "$filename "
	$convert +append $tmprow "$thumb" $tmprow 2>/dev/null
 
	# generate the html in .1024/.html/file.jpg.html
	for res in ${heights[*]}; do
		prev= next=
		[[ $file -ne 0 ]] && prev=${filelist[$((file - 1))]}
		[[ $file -ne $((numfiles - 1)) ]] && next=${filelist[$((file + 1))]}
		htmlfile=.$res/.html/$filename.html
		xsize=$($jhead ".$res/$filename" 2>/dev/null | awk '($1 == "Resolution") {print $3}')
		cat >"$htmlfile" <<EOF
<html><head><title>$filename</title>
<script language="JavaScript">
prev=new Image();
next=new Image();
function f(){
EOF
		[[ $prev ]] && echo "prev.src='../$prev';" >>"$htmlfile"
		[[ $next ]] && echo "next.src='../$next';" >>"$htmlfile"
		cat >>"$htmlfile" <<EOF
}
</script></head><body onLoad="f()">
<a href='../../.$res.$index'>^ up to thumbnails ^</a> 
EOF
		[[ $prev ]] && echo "<a href='$prev.html'>&lt;- prev</a> " >>"$htmlfile" || echo -n "&lt;- prev " >>"$htmlfile"
		[[ $next ]] && echo "<a href='$next.html'>next -&gt;</a> " >>"$htmlfile" || echo -n "next -&gt; " >>"$htmlfile"
		for size in ${heights[*]}; do
			[[ $size == $res ]] && echo -n "$size " || echo -n "<a href='../../.$size/.html/$filename.html'>$size</a> "
		done >>"$htmlfile"
		echo "<p><a href="../../$filename"><img border=0 width=$xsize height=$res src='../$filename'></a><p>" >>"$htmlfile"
		$jhead "$filename" 2>/dev/null | sed 's/$/<br>/' >>"$htmlfile"
		echo '<hr><font size="-1">Generated by <a href="http://shapor.com/bashgal">bashgal</a></font></body>' >>"$htmlfile"
		echo "<div style='width:${twidth}px'><a href='.$res/.html/$filename.html'><img border=0 alt='$filename' src='$sheetdir/$sheet.jpg' style='left:-${curx}px;top:-${cury}px;position:absolute'></a></div>" >>$tmpindex.$res
	done
 
	let file++
	curx=$((curx + twidth))
done
$convert -append $tmpsheet $tmprow $tmpsheet 2>/dev/null
rm $tmprow 2>/dev/null
debug && echo && echo saving sheet $sheet
mv $tmpsheet $sheetdir/$sheet.jpg 2>/dev/null
# generate html
for res in ${heights[*]}; do
	echo "</body></html>" >>$tmpindex.$res
	mv $tmpindex.$res .$res.$index
done
rm $index 2>/dev/null
ln -s .$defaultres.$index $index
[[ $# -eq 1 ]] && popd >/dev/null