paulo@52: import os
paulo@52: import re
paulo@52: import glob
paulo@52: import traceback
paulo@52: 
paulo@52: import html
paulo@52: 
paulo@53: import logging
paulo@53: logging.basicConfig(
paulo@53: 	level=logging.DEBUG,
paulo@53: 	filename="_LOG",
paulo@53: 	format="%(asctime)s %(levelname)-8s %(message)s",
paulo@53: )
paulo@52: 
paulo@52: 
paulo@52: 
paulo@52: def _get_pics_url(environ, dirpath):
paulo@52: 	script_name = environ.get("SCRIPT_NAME", '')
paulo@52: 	return os.path.normpath(os.path.join(os.path.dirname(script_name), dirpath))
paulo@52: 
paulo@52: 
paulo@53: def _get_app_url(environ, dirpath):
paulo@53: 	script_name = environ.get("SCRIPT_NAME", '')
paulo@53: 	return os.path.normpath(os.path.join(script_name, dirpath))
paulo@53: 
paulo@53: 
paulo@53: def _parse_path_info(path_info):
paulo@53: 	ppi = path_info.split(os.sep)
paulo@53: 	if len(ppi) > 1 and ppi[-1] == '':
paulo@53: 		del ppi[-1]
paulo@53: 		
paulo@53: 	return ppi
paulo@53: 
paulo@53: 
paulo@53: def _get_standard_html_doc(title):
paulo@53: 	root = html.HTML("html")
paulo@53: 
paulo@53: 	header = root.header
paulo@53: 	header.title(title)
paulo@53: 
paulo@53: 	body = root.body
paulo@53: 	body.h1(title)
paulo@53: 
paulo@53: 	return (root, header, body)
paulo@53: 
paulo@53: 
paulo@53: def _numeric_pad_basename(path, maxdigits=20):
paulo@53: 	return os.path.basename(path).zfill(maxdigits)
paulo@53: 
paulo@53: 
paulo@53: def _get_images(d):
paulo@53: 	thumb_fns = glob.glob(os.path.join(d, "thumbs", "*.jpg"))
paulo@53: 	thumb_fns = sorted(thumb_fns, key=_numeric_pad_basename)
paulo@53: 	logging.debug("thumb_fns = %s" % thumb_fns)
paulo@53: 
paulo@53: 	browse_fns = [os.path.join(d, "browse", os.path.basename(i)) for i in thumb_fns]
paulo@53: 	logging.debug("browse_fns = %s" % browse_fns)
paulo@53: 
paulo@53: 	return zip(thumb_fns, browse_fns)
paulo@53: 
paulo@53: 
paulo@53: def _go_thumbnail_links_to_browse_imgs_html_body(environ, body, t, b):
paulo@53: 	thumb_img_url = _get_pics_url(environ, t)
paulo@53: 	browse_url = _get_app_url(environ, b)
paulo@53: 	body.a(href=browse_url).img(src=thumb_img_url)
paulo@53: 
paulo@53: 
paulo@52: def main(environ):
paulo@53: 	page_func = None
paulo@52: 
paulo@53: 	logging.debug("environ['PATH_INFO'] = %s" % environ["PATH_INFO"])
paulo@53: 	logging.debug("environ['SCRIPT_NAME'] = %s" % environ["SCRIPT_NAME"])
paulo@52: 
paulo@53: 	pi = environ["PATH_INFO"]
paulo@53: 	ppi = _parse_path_info(pi)
paulo@53: 	logging.debug("ppi = %s" % ppi)
paulo@53: 
paulo@53: 	if len(ppi) < 1 or ppi[0] != '':
paulo@53: 		raise AssertionError("Parsed path length must start empty: " + pi)
paulo@53: 
paulo@53: 	if len(ppi) >= 2 and os.path.exists(os.path.join(ppi[1], "_picsroot")):
paulo@53: 		if len(ppi) == 2:
paulo@53: 			page_func = page_thumbs
paulo@53: 		elif len(ppi) >= 4 and ppi[2] == "browse" and os.path.exists(os.path.join(*ppi)):
paulo@53: 			page_func = page_browse
paulo@53: 	elif len(ppi) == 1:
paulo@53: 		page_func = page_index
paulo@53: 
paulo@53: 	if page_func is None:
paulo@53: 		raise RuntimeError("Cannot find path: " + pi)
paulo@52: 	
paulo@53: 	return unicode(page_func(environ)).encode("utf-8")
paulo@53: 	
paulo@52: 
paulo@53: def page_index(environ):
paulo@53: 	(html_root, html_header, html_body) = _get_standard_html_doc("pics index")
paulo@52: 
paulo@53: 	return html_root
paulo@52: 
paulo@52: 
paulo@53: def page_thumbs(environ):
paulo@53: 	ppi = _parse_path_info(environ["PATH_INFO"])
paulo@53: 	d = os.path.join(*ppi)
paulo@53: 	(html_root, html_header, html_body) = _get_standard_html_doc(d)
paulo@53: 
paulo@53: 	html_p = html_body.p
paulo@53: 	for (t, b) in _get_images(d):
paulo@53: 		_go_thumbnail_links_to_browse_imgs_html_body(environ, html_p, t, b)
paulo@53: 
paulo@53: 	return html_root
paulo@53: 
paulo@53: 
paulo@53: def page_browse(environ):
paulo@53: 	ppi = _parse_path_info(environ["PATH_INFO"])
paulo@53: 	d = os.path.join(*ppi[:2])
paulo@53: 	imgs = _get_images(d)
paulo@53: 	img = os.path.join(*ppi)
paulo@53: 
paulo@53: 	# thumbnail preview ribbon
paulo@53: 	w = 7 # must be odd
paulo@53: 	v = w/2
paulo@53: 	imgs_circ = [None] * w
paulo@53: 	x = None
paulo@53: 	n = len(imgs)
paulo@53: 	for (i, (t, b)) in enumerate(imgs):
paulo@53: 		if b == img:
paulo@53: 			x = i + 1
paulo@53: 			imgs_circ[v] = (t, b)
paulo@53: 			for j in range(1, v + 1):
paulo@53: 				if (i + j) < n: imgs_circ[v + j] = imgs[i + j]
paulo@53: 				if (i - j) >= 0: imgs_circ[v - j] = imgs[i - j]
paulo@53: 					
paulo@53: 			break
paulo@53: 
paulo@53: 	if x is None:
paulo@53: 		raise AssertionError
paulo@53: 
paulo@53: 	(html_root, html_header, html_body) = _get_standard_html_doc(u"%s \u2014 %s of %s" % (d, x, len(imgs)))
paulo@53: 
paulo@53: 	browse_img_url = _get_pics_url(environ, img)
paulo@53: 	html_body.p.img(src=browse_img_url)
paulo@53: 
paulo@53: 	logging.debug("imgs_circ = %s" % imgs_circ)
paulo@53: 
paulo@53: 	html_p_ribbon = html_body.p
paulo@53: 	for i in imgs_circ:
paulo@53: 		if i is not None:
paulo@53: 			(t, b) = i
paulo@53: 			_go_thumbnail_links_to_browse_imgs_html_body(environ, html_p_ribbon, t, b)
paulo@53: 
paulo@53: 	return html_root
paulo@53: 
paulo@52: 
paulo@52: def app(environ, start_response):
paulo@52: 	response_code = "500 Internal Server Error"
paulo@52: 	response_type = "text/plain; charset=UTF-8"
paulo@52: 
paulo@52: 	try:
paulo@52: 		response_body = main(environ)
paulo@52: 		response_code = "200 OK"
paulo@52: 		response_type = "text/html; charset=UTF-8"
paulo@52: 	except:
paulo@52: 		response_body = traceback.format_exc()
paulo@52: 
paulo@52: 	response_headers = [
paulo@52: 		("Content-Type", response_type),
paulo@52: 		("Content-Length", str(len(response_body))),
paulo@52: 	]
paulo@52: 
paulo@52: 	start_response(response_code, response_headers)
paulo@52: 
paulo@52: 	return [response_body]