diff --git a/swh/web/browse/views/content.py b/swh/web/browse/views/content.py index 3d4aaa94..b50a8c05 100644 --- a/swh/web/browse/views/content.py +++ b/swh/web/browse/views/content.py @@ -1,262 +1,265 @@ # Copyright (C) 2017-2018 The Software Heritage developers # See the AUTHORS file at the top-level directory of this distribution # License: GNU Affero General Public License version 3, or any later version # See top-level LICENSE file for more information import difflib import json from distutils.util import strtobool from django.http import HttpResponse from django.utils.safestring import mark_safe from django.shortcuts import render from django.template.defaultfilters import filesizeformat from swh.model.hashutil import hash_to_hex from swh.web.common import query from swh.web.common.utils import ( reverse, gen_path_info ) from swh.web.common.exc import handle_view_exception from swh.web.browse.utils import ( request_content, prepare_content_for_display, content_display_max_size, get_snapshot_context, get_swh_persistent_ids ) from swh.web.browse.browseurls import browse_route @browse_route(r'content/(?P.+)/raw/', view_name='browse-content-raw') def content_raw(request, query_string): """Django view that produces a raw display of a SWH content identified by its hash value. The url that points to it is :http:get:`/browse/content/[(algo_hash):](hash)/raw/` """ # noqa try: algo, checksum = query.parse_hash(query_string) checksum = hash_to_hex(checksum) content_data = request_content(query_string, max_size=None) except Exception as exc: return handle_view_exception(request, exc) filename = request.GET.get('filename', None) if not filename: filename = '%s_%s' % (algo, checksum) if content_data['mimetype'].startswith('text/') or \ content_data['mimetype'] == 'inode/x-empty': response = HttpResponse(content_data['raw_data'], content_type="text/plain") response['Content-disposition'] = 'filename=%s' % filename else: response = HttpResponse(content_data['raw_data'], content_type='application/octet-stream') response['Content-disposition'] = 'attachment; filename=%s' % filename return response _auto_diff_size_limit = 20000 @browse_route(r'content/(?P.*)/diff/(?P.*)', # noqa view_name='diff-contents') def _contents_diff(request, from_query_string, to_query_string): """ Browse endpoint used to compute unified diffs between two contents. Diffs are generated only if the two contents are textual. By default, diffs whose size are greater than 20 kB will not be generated. To force the generation of large diffs, the 'force' boolean query parameter must be used. Args: request: input django http request from_query_string: a string of the form "[ALGO_HASH:]HASH" where optional ALGO_HASH can be either *sha1*, *sha1_git*, *sha256*, or *blake2s256* (default to *sha1*) and HASH the hexadecimal representation of the hash value identifying the first content to_query_string: same as above for identifying the second content Returns: A JSON object containing the unified diff. """ diff_data = {} content_from = None content_to = None content_from_size = 0 content_to_size = 0 content_from_lines = [] content_to_lines = [] force = request.GET.get('force', 'false') path = request.GET.get('path', None) language = 'nohighlight-swh' force = bool(strtobool(force)) if from_query_string == to_query_string: diff_str = 'File renamed without changes' else: text_diff = True if from_query_string: content_from = request_content(from_query_string, max_size=None) content_from_display_data = prepare_content_for_display( content_from['raw_data'], content_from['mimetype'], path) language = content_from_display_data['language'] content_from_size = content_from['length'] if not (content_from['mimetype'].startswith('text/') or content_from['mimetype'] == 'inode/x-empty'): text_diff = False if text_diff and to_query_string: content_to = request_content(to_query_string, max_size=None) content_to_display_data = prepare_content_for_display( content_to['raw_data'], content_to['mimetype'], path) language = content_to_display_data['language'] content_to_size = content_to['length'] if not (content_to['mimetype'].startswith('text/') or content_to['mimetype'] == 'inode/x-empty'): text_diff = False diff_size = abs(content_to_size - content_from_size) if not text_diff: diff_str = 'Diffs are not generated for non textual content' language = 'nohighlight-swh' elif not force and diff_size > _auto_diff_size_limit: diff_str = 'Large diffs are not automatically computed' language = 'nohighlight-swh' else: if content_from: content_from_lines = content_from['raw_data'].decode('utf-8')\ .splitlines(True) if content_from_lines and content_from_lines[-1][-1] != '\n': content_from_lines[-1] += '[swh-no-nl-marker]\n' if content_to: content_to_lines = content_to['raw_data'].decode('utf-8')\ .splitlines(True) if content_to_lines and content_to_lines[-1][-1] != '\n': content_to_lines[-1] += '[swh-no-nl-marker]\n' diff_lines = difflib.unified_diff(content_from_lines, content_to_lines) diff_str = ''.join(list(diff_lines)[2:]) diff_data['diff_str'] = diff_str diff_data['language'] = language diff_data_json = json.dumps(diff_data, separators=(',', ': ')) return HttpResponse(diff_data_json, content_type='application/json') @browse_route(r'content/(?P.+)/', view_name='browse-content') def content_display(request, query_string): """Django view that produces an HTML display of a SWH content identified by its hash value. The url that points to it is :http:get:`/browse/content/[(algo_hash):](hash)/` """ # noqa try: algo, checksum = query.parse_hash(query_string) checksum = hash_to_hex(checksum) content_data = request_content(query_string) origin_type = request.GET.get('origin_type', None) origin_url = request.GET.get('origin_url', None) if not origin_url: origin_url = request.GET.get('origin', None) snapshot_context = None if origin_url: snapshot_context = get_snapshot_context(None, origin_type, origin_url) if snapshot_context: snapshot_context['visit_info'] = None except Exception as exc: return handle_view_exception(request, exc) path = request.GET.get('path', None) content = None language = None if content_data['raw_data'] is not None: content_display_data = prepare_content_for_display( content_data['raw_data'], content_data['mimetype'], path) content = content_display_data['content_data'] language = content_display_data['language'] root_dir = None filename = None path_info = None breadcrumbs = [] if path: split_path = path.split('/') root_dir = split_path[0] filename = split_path[-1] path = path.replace(root_dir + '/', '') path = path[:-len(filename)] path_info = gen_path_info(path) breadcrumbs.append({'name': root_dir[:7], 'url': reverse('browse-directory', kwargs={'sha1_git': root_dir})}) for pi in path_info: breadcrumbs.append({'name': pi['name'], 'url': reverse('browse-directory', kwargs={'sha1_git': root_dir, 'path': pi['path']})}) breadcrumbs.append({'name': filename, 'url': None}) query_params = None if filename: query_params = {'filename': filename} content_raw_url = reverse('browse-content-raw', kwargs={'query_string': query_string}, query_params=query_params) content_metadata = { 'sha1 checksum': content_data['checksums']['sha1'], 'sha1_git checksum': content_data['checksums']['sha1_git'], 'sha256 checksum': content_data['checksums']['sha256'], 'blake2s256 checksum': content_data['checksums']['blake2s256'], 'mime type': content_data['mimetype'], 'encoding': content_data['encoding'], 'size': filesizeformat(content_data['length']), 'language': content_data['language'], 'licenses': content_data['licenses'] } + if filename: + content_metadata['filename'] = filename + sha1_git = content_data['checksums']['sha1_git'] swh_ids = get_swh_persistent_ids([{'type': 'content', 'id': sha1_git}]) heading = 'Content - %s' % sha1_git if breadcrumbs: content_path = '/'.join([bc['name'] for bc in breadcrumbs]) heading += ' - %s' % content_path return render(request, 'content.html', {'heading': heading, 'swh_object_name': 'Content', 'swh_object_metadata': content_metadata, 'content': content, 'content_size': content_data['length'], 'max_content_size': content_display_max_size, 'mimetype': content_data['mimetype'], 'language': language, 'breadcrumbs': breadcrumbs, 'top_right_link': content_raw_url, 'top_right_link_text': mark_safe( 'Raw File'), 'snapshot_context': snapshot_context, 'vault_cooking': None, 'show_actions_menu': True, 'swh_ids': swh_ids})