def generate_page_diff(self, orig_page_num, new_page_num):
orig_page = self.orig_pdf.pdf_for_page(orig_page_num)
new_page = self.new_pdf.pdf_for_page(new_page_num)
if orig_page and new_page:
changes = pdf_diff.compute_changes(
orig_page, new_page)
pprint(changes)
def pdf_diff(response: Response,
prev: UploadFile = File(...),
current: UploadFile = File(...),
img: Optional[bool] = True):
diff_id = str(uuid.uuid4())
working_dir = BASE_WORKING_DIR + "/" + diff_id + "/"
# Create a new directory structure for each request to store the uploaded files and diff.pdf
os.makedirs(working_dir)
prev_path = copy_file(working_dir, prev, 'prev.pdf')
current_path = copy_file(working_dir, current, 'current.pdf')
changes = command_line.compute_changes(prev_path, current_path)
json_path = working_dir + "/" + DIFF_JSON
import json
with open(json_path, 'w') as fp:
json.dump(changes, fp)
pdf_path = working_dir + "/" + DIFF_PDF
render_changes(changes, pdf_path)
if img:
custom_headers = {
DIFF_ID_HEADER: diff_id,
'access-control-expose-headers': DIFF_ID_HEADER
}
return FileResponse(pdf_path,
media_type="application/pdf",
headers=custom_headers,
filename='diff.pdf')
else:
response.headers['access-control-expose-headers'] = DIFF_ID_HEADER
response.headers[DIFF_ID_HEADER] = diff_id
return changes
def generate_matching_sections(self):
"""Return a generator of MatchingSection.
At most one MatchingSection is returned for each section in orig_pdf.
"""
for sec in self.orig_pdf.comparable_sections:
matching = get_section_range_pairs(sec, self.new_pdf)
if not matching:
continue
matching.orig_range["dom"] = self.orig_pdf.dom
matching.new_range["dom"] = self.new_pdf.dom
changes = pdf_diff.compute_changes(
matching.orig_range, matching.new_range, bottom_margin=93)
if changes:
matching.changes = changes
yield matching
else:
print("No changes in", matching)
def assertFileEqual(generated_data, master_filename):
from pdf_diff.command_line import compute_changes
import pkg_resources
import tempfile
import os
import pytest
master_file = pkg_resources.resource_filename(
'sw.allotmentclub.browser.tests', master_filename)
handle, generated_file = tempfile.mkstemp(suffix='pdf')
os.fdopen(handle, 'wb').write(generated_data)
changes = compute_changes(master_file, generated_file)
if changes:
changes_text = ""
for change in changes:
if change == '*':
changes_text += '\n\r'
continue
changes_text += '{}: {}\n\r'.format(change['pdf']['file'],
change['text'])
pytest.fail('Generated pdf does not equal master: \n\r\n\r{}'.format(
changes_text))
else:
os.remove(generated_file)