def preview(request, id, step=None, page="1"):
try:
doc = Document.objects.get(id=id)
except Document.DoesNotExist:
raise Http404("Document does not exists")
if request.user.has_perm(Access.PERM_READ, doc):
page_path = doc.get_page_path(
page_num=page,
step=Step(step),
)
img_abs_path = default_storage.abspath(page_path.img_url())
if not os.path.exists(img_abs_path):
logger.debug(
f"Preview image {img_abs_path} does not exists. Generating...")
extract_img(page_path, media_root=settings.MEDIA_ROOT)
try:
with open(img_abs_path, "rb") as f:
return HttpResponse(f.read(), content_type="image/jpeg")
except IOError:
generic_file = "admin/img/document.png"
if Step(step).is_thumbnail:
generic_file = "admin/img/document_thumbnail.png"
file_path = finders.find(generic_file)
with open(file_path, "rb") as f:
return HttpResponse(f.read(), content_type="image/png")
return redirect('core:index')
def ocr_page_pdf(doc_path, page_num, lang):
"""
doc_path is an mglib.path.DocumentPath instance
"""
logger.debug("OCR PDF document")
page_count = get_pagecount(default_storage.abspath(doc_path.url()))
if page_num <= page_count:
# first quickly generate preview images
page_url = PagePath(document_path=doc_path,
page_num=page_num,
step=Step(1),
page_count=page_count)
for step in Steps():
page_url.step = step
extract_img(page_url, media_root=settings.MEDIA_ROOT)
if page_num <= page_count:
page_url = PagePath(document_path=doc_path,
page_num=page_num,
step=Step(1),
page_count=page_count)
extract_txt(page_url, lang=lang, media_root=settings.MEDIA_ROOT)
for step in Steps():
page_url.step = step
if not step.is_thumbnail:
extract_hocr(page_url,
lang=lang,
media_root=settings.MEDIA_ROOT)
return page_url
def ocr_page_image(doc_path, page_num, lang):
"""
image = jpg, jpeg, png
"""
logger.debug("OCR image (jpeg, jpg, png) document")
page_url = PagePath(
document_path=doc_path,
page_num=page_num,
step=Step(1),
# jpeg, jpg, png are 1 page documents
page_count=1)
# resize and eventually convert (png -> jpg)
resize_img(page_url, media_root=settings.MEDIA_ROOT)
extract_txt(page_url, lang=lang, media_root=settings.MEDIA_ROOT)
# First quickly generate preview images
for step in Steps():
page_url.step = step
resize_img(page_url, media_root=settings.MEDIA_ROOT)
# reset page's step
page_url.step = Step(1)
# Now OCR each image
for step in Steps():
if not step.is_thumbnail:
extract_hocr(page_url, lang=lang, media_root=settings.MEDIA_ROOT)
return page_url
def ocr_page_pdf(doc_path, page_num, lang, **kwargs):
"""
doc_path is an mglib.path.DocumentPath instance
On success returns ``mglib.path.PagePath`` instance.
"""
logger.debug("OCR PDF document")
file_name = kwargs.pop('file_name', None)
if not file_name:
file_name = doc_path.file_name
page_count = get_pagecount(default_storage.abspath(doc_path.url()))
if page_num <= page_count:
# first quickly generate preview images
page_path = PagePath(document_path=doc_path,
page_num=page_num,
step=Step(1),
page_count=page_count)
for step in Steps():
page_path.step = step
extract_img(page_path, media_root=settings.MEDIA_ROOT)
notify_pre_page_ocr(page_path,
page_num=page_num,
lang=lang,
file_name=doc_path.file_name,
**kwargs)
if page_num <= page_count:
page_path = PagePath(document_path=doc_path,
page_num=page_num,
step=Step(1),
page_count=page_count)
extract_txt(page_path, lang=lang, media_root=settings.MEDIA_ROOT)
notify_txt_ready(page_path,
page_num=page_num,
lang=lang,
file_name=file_name,
**kwargs)
for step in Steps():
page_path.step = step
if not step.is_thumbnail:
extract_hocr(page_path,
lang=lang,
media_root=settings.MEDIA_ROOT)
notify_hocr_ready(
page_path,
page_num=page_num,
lang=lang,
# step as integer number
step=step.current,
file_name=file_name,
**kwargs)
return page_path
def ocr_page_image(doc_path, page_num, lang, **kwargs):
"""
image = jpg, jpeg, png
On success returns ``mglib.path.PagePath`` instance.
"""
logger.debug("OCR image (jpeg, jpg, png) document")
page_path = PagePath(
document_path=doc_path,
page_num=page_num,
step=Step(1),
# jpeg, jpg, png are 1 page documents
page_count=1)
notify_pre_page_ocr(page_path,
page_num=page_num,
lang=lang,
file_name=doc_path.file_name,
**kwargs)
# resize and eventually convert (png -> jpg)
resize_img(page_path, media_root=settings.MEDIA_ROOT)
extract_txt(page_path, lang=lang, media_root=settings.MEDIA_ROOT)
notify_txt_ready(page_path,
page_num=page_num,
lang=lang,
file_name=doc_path.file_name,
**kwargs)
# First quickly generate preview images
for step in Steps():
page_path.step = step
resize_img(page_path, media_root=settings.MEDIA_ROOT)
# reset page's step
page_path.step = Step(1)
# Now OCR each image
for step in Steps():
if not step.is_thumbnail:
extract_hocr(page_path, lang=lang, media_root=settings.MEDIA_ROOT)
notify_hocr_ready(
page_path,
page_num=page_num,
lang=lang,
# step as integer number
step=step.current,
file_name=doc_path.file_name,
**kwargs)
return page_path
def test_preview(self):
doc = Document.create_document(
title="berlin.pdf",
user=self.testcase_user,
lang="ENG",
file_name="berlin.pdf",
size=1222,
page_count=3
)
default_storage.copy_doc(
src=os.path.join(
BASE_DIR, "data", "berlin.pdf"
),
dst=doc.path.url(),
)
ret = self.client.post(
reverse('core:preview', args=(doc.id, 1, 1))
)
self.assertEqual(
ret.status_code,
200
)
page_path = PagePath(
document_path=doc.path,
page_num=1,
step=Step(1),
page_count=3
)
self.assertTrue(
os.path.exists(
default_storage.abspath(page_path.img_url())
)
)
def test_ppmroot(self):
doc_ep = DocumentPath(user_id=1, document_id=3, file_name="x.pdf")
page_url = PagePath(document_ep=doc_ep,
page_num=1,
step=Step(1),
page_count=3)
self.assertEqual(page_url.ppmroot,
"results/user_1/document_3/pages/page_1/100/page")
def test_txt_url(self):
"""
Without any arguments
page_ep.url() returns page_ep.txt_url()
"""
doc_ep = DocumentPath(user_id=1, document_id=3, file_name="x.pdf")
page_ep = PagePath(document_ep=doc_ep,
page_num=1,
step=Step(1),
page_count=3)
self.assertEqual(page_ep.url(), page_ep.txt_url())
def apply_metadata_plugins(document_id, page_num):
try:
document = Document.objects.get(id=document_id)
except Document.DoesNotExist:
logger.error(f"Provided document_id={document_id}, does not exists")
return
page_path = document.get_page_path(
page_num=page_num,
step=Step(),
)
hocr_path = default_storage.abspath(page_path.hocr_url())
metadata_plugins = MetadataPlugins()
return metadata_plugins.apply(hocr_path)
def apply_automates(document_id, page_num):
logger.debug("apply_automates: Begin.")
try:
document = Document.objects.get(id=document_id)
except Document.DoesNotExist:
logger.error(f"Provided document_id={document_id}, does not exists")
return
page_path = document.get_page_path(
page_num=page_num,
step=Step(),
)
user = document.user
hocr_path = default_storage.abspath(page_path.hocr_url())
hocr = ""
with open(hocr_path, "r") as f:
hocr = f.read()
automates = Automate.objects.filter(user=user)
# are there automates for the user?
if automates.count() == 0:
logger.debug(f"No automates for user {user}. Quit.")
return
# check all automates for given user (the owner of the document)
for automate in automates:
if automate.is_a_match(hocr):
logger.debug(f"Automate {automate} matched document={document}")
plugin_klass = get_plugin_by_module_name(automate.plugin_name)
logger.debug(f"Found plugin module={plugin_klass.__module__}")
logger.debug(f"len(hocr)=={len(hocr)}")
automate.apply(
document=document,
page_num=page_num,
hocr=hocr,
# Notice () - plugin passed is instance of the class
plugin=plugin_klass())
else:
logger.debug(f"No match for automate={automate}"
f" doc_id={document_id} page_num={page_num}")
def ocr_page_pdf(doc_path, page_num, lang):
"""
doc_path is an mglib.path.DocumentPath instance
"""
page_count = get_pagecount(default_storage.abspath(doc_path.url()))
if page_num <= page_count:
page_url = PagePath(document_path=doc_path,
page_num=page_num,
step=Step(1),
page_count=page_count)
extract_img(page_url, media_root=settings.MEDIA_ROOT)
extract_txt(page_url, lang=lang, media_root=settings.MEDIA_ROOT)
for step in Steps():
page_url.step = step
extract_img(page_url, media_root=settings.MEDIA_ROOT)
# tesseract unterhalt-1.jpg page-1 -l deu hocr
if not step.is_thumbnail:
extract_hocr(page_url,
lang=lang,
media_root=settings.MEDIA_ROOT)
return page_url
def test_step(self):
step = Step(1)
self.assertFalse(step.is_thumbnail,
f"{step} is is_thumbnail, but it should not be!")
def apply_automates(document_id, page_num):
logger.debug("apply_automates: Begin.")
try:
document = Document.objects.get(id=document_id)
except Document.DoesNotExist:
logger.error(f"Provided document_id={document_id}, does not exists")
return
# use text files from the original version of the document
doc_path = DocumentPath.copy_from(
document.path,
version=0
)
page_count = get_pagecount(
default_storage.abspath(doc_path.url())
)
page_path = PagePath(
document_path=doc_path,
page_num=page_num,
page_count=page_count,
step=Step(),
)
user = document.user
text_path = default_storage.abspath(page_path.txt_url())
text = ""
with open(text_path, "r") as f:
text = f.read()
automates = Automate.objects.filter(user=user)
# are there automates for the user?
if automates.count() == 0:
logger.debug(
f"No automates for user {user}. Quit."
)
return
# check all automates for given user (the owner of the document)
matched = []
for automate in automates:
if automate.is_a_match(text):
logger.debug(f"Automate {automate} matched document={document}")
plugin_klass = get_plugin_by_module_name(
automate.plugin_name
)
plugin = plugin_klass() if plugin_klass else None
automate.apply(
document=document,
page_num=page_num,
hocr=text,
# Notice () - plugin passed is instance of the class
plugin=plugin
)
matched.append(automate)
else:
logger.debug(
f"No match for automate={automate}"
f" doc_id={document_id} page_num={page_num}"
)
message = ""
message = _(
"%(count)s of %(total)s Automate(s) matched. ") % {
'count': len(matched),
'total': automates.count()
}
if len(matched) > 0:
message += _("List of matched Automates: %(matched_automates)s") % {
'matched_automates': matched
}
automates_matching.send(
sender="papermerge.core.automate",
user_id=document.user.id,
document_id=document_id,
level=logging.INFO,
message=message,
page_num=page_num,
text=text
)
