mirror of
https://github.com/encode/django-rest-framework.git
synced 2024-11-29 21:14:01 +03:00
116 lines
4.0 KiB
Python
116 lines
4.0 KiB
Python
from __future__ import with_statement # for python 2.5
|
|
from django.conf import settings
|
|
from django.core.urlresolvers import reverse
|
|
|
|
from djangorestframework.resources import FormResource
|
|
from djangorestframework.response import Response
|
|
from djangorestframework.renderers import BaseRenderer
|
|
from djangorestframework.views import View
|
|
from djangorestframework import status
|
|
|
|
from pygments.formatters import HtmlFormatter
|
|
from pygments.lexers import get_lexer_by_name
|
|
from pygments import highlight
|
|
|
|
from forms import PygmentsForm
|
|
|
|
import os
|
|
import uuid
|
|
import operator
|
|
|
|
# We need somewhere to store the code snippets that we highlight
|
|
HIGHLIGHTED_CODE_DIR = os.path.join(settings.MEDIA_ROOT, 'pygments')
|
|
MAX_FILES = 10
|
|
|
|
|
|
def list_dir_sorted_by_ctime(dir):
|
|
"""
|
|
Return a list of files sorted by creation time
|
|
"""
|
|
filepaths = [os.path.join(dir, file) for file in os.listdir(dir) if not file.startswith('.')]
|
|
return [item[0] for item in sorted( [(path, os.path.getctime(path)) for path in filepaths],
|
|
key=operator.itemgetter(1), reverse=False) ]
|
|
|
|
def remove_oldest_files(dir, max_files):
|
|
"""
|
|
Remove the oldest files in a directory 'dir', leaving at most 'max_files' remaining.
|
|
We use this to limit the number of resources in the sandbox.
|
|
"""
|
|
[os.remove(path) for path in list_dir_sorted_by_ctime(dir)[max_files:]]
|
|
|
|
|
|
class HTMLRenderer(BaseRenderer):
|
|
"""
|
|
Basic renderer which just returns the content without any further serialization.
|
|
"""
|
|
media_type = 'text/html'
|
|
|
|
|
|
|
|
class PygmentsFormResource(FormResource):
|
|
"""
|
|
"""
|
|
form = PygmentsForm
|
|
|
|
|
|
class PygmentsRoot(View):
|
|
"""
|
|
This example demonstrates a simple RESTful Web API aound the awesome pygments library.
|
|
This top level resource is used to create highlighted code snippets, and to list all the existing code snippets.
|
|
"""
|
|
resource = PygmentsFormResource
|
|
|
|
def get(self, request):
|
|
"""
|
|
Return a list of all currently existing snippets.
|
|
"""
|
|
unique_ids = [os.path.split(f)[1] for f in list_dir_sorted_by_ctime(HIGHLIGHTED_CODE_DIR)]
|
|
return [reverse('pygments-instance', args=[unique_id]) for unique_id in unique_ids]
|
|
|
|
def post(self, request):
|
|
"""
|
|
Create a new highlighed snippet and return it's location.
|
|
For the purposes of the sandbox example, also ensure we delete the oldest snippets if we have > MAX_FILES.
|
|
"""
|
|
unique_id = str(uuid.uuid1())
|
|
pathname = os.path.join(HIGHLIGHTED_CODE_DIR, unique_id)
|
|
|
|
lexer = get_lexer_by_name(self.CONTENT['lexer'])
|
|
linenos = 'table' if self.CONTENT['linenos'] else False
|
|
options = {'title': self.CONTENT['title']} if self.CONTENT['title'] else {}
|
|
formatter = HtmlFormatter(style=self.CONTENT['style'], linenos=linenos, full=True, **options)
|
|
|
|
with open(pathname, 'w') as outfile:
|
|
highlight(self.CONTENT['code'], lexer, formatter, outfile)
|
|
|
|
remove_oldest_files(HIGHLIGHTED_CODE_DIR, MAX_FILES)
|
|
|
|
return Response(status.HTTP_201_CREATED, headers={'Location': reverse('pygments-instance', args=[unique_id])})
|
|
|
|
|
|
class PygmentsInstance(View):
|
|
"""
|
|
Simply return the stored highlighted HTML file with the correct mime type.
|
|
This Resource only renders HTML and uses a standard HTML renderer rather than the renderers.DocumentingHTMLRenderer class.
|
|
"""
|
|
renderers = (HTMLRenderer,)
|
|
|
|
def get(self, request, unique_id):
|
|
"""
|
|
Return the highlighted snippet.
|
|
"""
|
|
pathname = os.path.join(HIGHLIGHTED_CODE_DIR, unique_id)
|
|
if not os.path.exists(pathname):
|
|
return Response(status.HTTP_404_NOT_FOUND)
|
|
return open(pathname, 'r').read()
|
|
|
|
def delete(self, request, unique_id):
|
|
"""
|
|
Delete the highlighted snippet.
|
|
"""
|
|
pathname = os.path.join(HIGHLIGHTED_CODE_DIR, unique_id)
|
|
if not os.path.exists(pathname):
|
|
return Response(status.HTTP_404_NOT_FOUND)
|
|
return os.remove(pathname)
|
|
|