def get_bitmap_by_id(imageid):
# select image with matching id and return 404 if no such image found
image = Image.select().where(Image.id == imageid)
if image.count() == 0:
return json.dumps({'message': 'No image with matching ID found!'}), 404
# forward request to image source using proxy
return proxy.stream(request, 'GET', BASE_URL_DATASET + image[0].src)
def title(title_id):
"""
Render title (grid of page thumbnails).
"""
# Get title information
try:
volume = Volume.get(Volume.id == title_id)
except Volume.DoesNotExist:
render_template("error.html",
response="Volume " + title_id + " does not exist")
# Get list of images for this title
thumbs = Image.select(
Image,
Volume).join(Volume).where(Volume.id == title_id).order_by(Image.page)
# Get list of tags for this title
tags = Tag.select(Tag, TagRelation,
Volume).join(TagRelation).join(Volume).where(
Volume.id == title_id).order_by(Tag.name)
# pass list of thumbnails to template
return render_template("title.html",
title=volume.title,
id=str(title_id),
thumbs=thumbs,
tags=tags)
def get_image_by_id(imageid):
# select image with matching id and return 404 if no such image found
image = Image.select().where(Image.id == imageid)
if image.count() == 0:
return json.dumps({'message': 'No image with matching ID found!'}), 404
# wrap image object into JSON and return it
image_json = {'image': get_image_json_object(image[0])}
return json.dumps(image_json), 200
def get_images():
# get options from request
# in case of invalid parameters return 400
try:
limit = int(request.args.get('limit', default='100'))
offset = int(request.args.get('offset', default='0'))
except ValueError:
return json.dumps({'message': 'Invalid limit or offset passed!'}), 400
if limit < 1 or limit > 500 or offset < 0:
return json.dumps({'message': 'Invalid limit or offset passed!'}), 400
count = Image.select().count() # pylint: disable=no-value-for-parameter
image_dict = {'images': [], 'count': count}
# iterate over all images with given offset and limit
# wrap them into json and add them to the list
for image in Image.select().limit(limit).offset(offset):
image_json = get_image_json_object(image)
image_dict['images'].append(image_json)
return json.dumps(image_dict), 200
def page_image(title_id, page_num):
"""Get archive file corresponding to title ID
and member file corresponding to page number
Returns extracted image to browser"""
# Get title information
try:
volume = Volume.get(Volume.id == title_id)
except Volume.DoesNotExist:
abort(404)
# Get page information
try:
page = Image.select().join(Volume).where((Volume.id == title_id)
& (Image.page == page_num)).get()
except Image.DoesNotExist:
abort(404)
if volume.filetype == 'zip':
# TODO: Error check on archive open
z = zipfile.ZipFile(INPUT_PATH+volume.filename)
# Get page binary data
# TODO: Error checking
zf = z.read(page.filename)
z.close()
# Return extracted image to browser
return send_file(BytesIO(zf), mimetype=page.mimetype)
elif volume.filetype == 'rar':
# TODO: Error check on archive open
rar = rarfile.RarFile(INPUT_PATH+volume.filename)
# Get page binary data
# TODO: Error checking
rardata = rar.read(page.filename)
rar.close()
# Return extracted image to browser
return send_file(BytesIO(rardata), mimetype=page.mimetype)
# unrecognised archive type
else:
abort(500)
def slide(title_id):
"""Test template for Unslider display, displays Title title_id"""
# Get title information
try:
volume = Volume.get(Volume.id == title_id)
except Volume.DoesNotExist:
abort(404)
# Get list of images for this title
pages = Image.select(Image, Volume).join(Volume).where(
Volume.id == title_id).order_by(Image.page)
# Pass volume and page details to Unslider template
return render_template("slider.html", title_id=title_id, volume=volume, pages=pages)
def title(title_id):
"""
Render title (grid of thumbnails).
Image 0 as blurred CSS background?
"""
# Get title information
try:
volume = Volume.get(Volume.id == title_id)
except Volume.DoesNotExist:
abort(404)
# Get list of images for this title
thumbs = Image.select(Image, Volume).join(Volume).where(Volume.id == title_id).order_by(Image.page)
# Get list of tags for this title
tags = Tag.select(Tag, TagRelation, Volume).join(TagRelation).join(Volume).where(Volume.id == title_id).order_by(Tag.name)
# pass list of thumbnails to template
return render_template("title.html", title=volume.title,
id=str(title_id), thumbs=thumbs, tags=tags)
def page_image(title_id, page_num):
"""
Get archive file corresponding to title ID
and member file corresponding to page number
Returns extracted image to browser
"""
# Get title information
try:
volume = Volume.get(Volume.id == title_id)
except Volume.DoesNotExist:
return render_template("error.html",
response="Volume " + title_id +
" does not exist")
# Get page information
try:
page = Image.select().join(Volume).where(
(Volume.id == title_id)
& (Image.page == page_num)).get()
except Image.DoesNotExist:
return render_template("error.html",
response="Image " + page_num +
" does not exist")
if volume.filetype == 'zip':
# TODO: Error check on archive open
z = zipfile.ZipFile(INPUT_PATH + volume.filename)
# Get page binary data
try:
zf = z.read(page.filename)
except zipfile.BadZipFile:
return render_template("error.html",
response="Bad archive file: " +
volume.filename)
z.close()
# Return extracted image to browser
return send_file(BytesIO(zf), mimetype=page.mimetype)
elif volume.filetype == 'rar':
# TODO: Error check on archive open
rar = rarfile.RarFile(INPUT_PATH + volume.filename)
# Get page binary data
# There must be a cleaner way of fixing paths, but pathlib doesn't seem to work
try:
rarpath = str(page.filename).replace('\\', '/')
rardata = rar.read(rarpath)
except rarfile.NoRarEntry:
return render_template("error.html",
response="No such file: " + rarpath +
" in " + volume.filename)
rar.close()
# Return extracted image to browser
return send_file(BytesIO(rardata), mimetype=page.mimetype)
# unrecognised archive type
else:
return render_template("error.html",
response="Unrecognised archive type: " +
volume.filename)
