Started something like an API.

The idea is to simplify and make more robust the modification of the
page and section resources, using git only (no more models)

aawiki/api.py

+"""
+========
+REST API
+========
+
+.. http://127.0.0.1:8000/api/v1/
+.. http://127.0.0.1:8000/api/v1/page/
+.. http://127.0.0.1:8000/api/v1/page/:name/
+.. http://127.0.0.1:8000/api/v1/page/:name/?section=:section
+.. http://127.0.0.1:8000/api/v1/page/:name/?format=:format
+.. http://127.0.0.1:8000/api/v1/page/:name/section/
+.. http://127.0.0.1:8000/api/v1/page/:name/section/:id/
+"""
+
+
+from django.conf.urls.defaults import url
+from tastypie import fields, http
+from tastypie.authentication import Authentication
+from tastypie.authorization import Authorization
+from tastypie.bundle import Bundle
+from tastypie.exceptions import NotFound
+from tastypie.resources import Resource
+from tastypie.utils import trailing_slash
+
+import time
+
+from aawiki.mdx.mdx_sectionedit import (sectionalize, sectionalize_replace)
+from aawiki.utils import convert_line_endings
+from aawiki.settings import REPO_PATH
+from pygit2 import GIT_OBJ_BLOB, GIT_SORT_TIME, Repository, Signature, init_repository
+
+try: import simplejson as json
+except ImportError: import json
+
+
+# a dummy class representing a page of data
+class Page(object):
+    repo = Repository(REPO_PATH)
+
+    @classmethod
+    def get(cls, key, hex=None):
+        if hex:
+            commit = cls.repo[hex]
+        else:
+            commit = cls.repo.head
+        te = commit.tree[key]
+        blob = te.to_object()
+        content = blob.data.decode("utf-8")
+        return Page(name=key, content=content, revision=commit.hex)
+
+    @classmethod
+    def all(cls):
+        pages = []
+        revision = cls.repo.head.hex
+        for te in cls.repo.head.tree:                             
+            blob = te.to_object()
+            if blob.type == GIT_OBJ_BLOB and not te.name.startswith("."):
+                content = blob.data.decode("utf-8")
+                pages.append(Page(name=te.name, content=content, revision=revision))
+        return pages
+
+    def delete(self,  message, user, email):
+        author = committer = Signature(user, email, time.time(), 0)
+
+        builder = Page.repo.TreeBuilder(Page.repo.head.tree)
+        builder.remove(self.name)
+        tree_oid = builder.write()
+
+        ## commits the changes
+        Page.repo.create_commit('HEAD', author, committer, message, tree_oid, [Page.repo.head.oid])
+
+    def normalize(self):
+        self.content = convert_line_endings(self.content, 0)  # Normalizes EOL
+        self.content = self.content.strip() + "\n\n" # Normalize whitespace around the markdown
+
+    def commit(self, message, user, email):
+        author = committer = Signature(user, email, time.time(), 0)
+
+        blob_oid = Page.repo.create_blob(self.content.encode("utf-8"))
+        builder = Page.repo.TreeBuilder(Page.repo.head.tree)
+        builder.insert(self.name, blob_oid, 0100644)
+        tree_oid = builder.write()
+
+        ## commits the changes
+        Page.repo.create_commit('HEAD', author, committer, message, tree_oid, [Page.repo.head.oid])
+        
+
+    def __init__(self, name=None, content=None, revision=None):
+        self.name = name
+        self.content = content
+        self.revision = revision
+
+
+class PageResource(Resource):
+    # fields must map to the attributes in the Page class
+    name = fields.CharField(attribute='name')
+    content = fields.CharField(attribute='content')
+    revision = fields.CharField(attribute='revision', readonly=True)
+
+    #hex = fields.CharField(attribute='revision', readonly=True)
+    #message = fields.CharField(attribute='revision', readonly=True)
+    #author = fields.CharField(attribute='revision', readonly=True)
+    
+    class Meta:
+        resource_name = 'page'
+        object_class = Page
+        authentication = Authentication()
+        authorization = Authorization()
+
+    def base_urls(self):
+        """
+        The standard URLs this ``Resource`` should respond to.
+        """
+        # Due to the way Django parses URLs, ``get_multiple`` won't work without
+        # a trailing slash.
+        return [
+            url(r"^(?P<resource_name>%s)%s$" % (self._meta.resource_name, trailing_slash()), 
+                self.wrap_view('dispatch_list'), name="api_dispatch_list"),
+            url(r"^(?P<resource_name>%s)/schema%s$" % (self._meta.resource_name, trailing_slash()), 
+                self.wrap_view('get_schema'), name="api_get_schema"),
+            url(r"^(?P<resource_name>%s)/set/(?P<name_list>\w[\w\.;-]*)/$" % self._meta.resource_name, 
+                self.wrap_view('get_multiple'), name="api_get_multiple"),
+            url(r"^(?P<resource_name>%s)/(?P<name>\w[\w\.-]*)%s$" % (self._meta.resource_name, trailing_slash()), 
+                self.wrap_view('dispatch_detail'), name="api_dispatch_detail"),
+        ]
+
+    # adapted this from ModelResource
+    def get_resource_uri(self, bundle_or_obj):
+        kwargs = {
+            'resource_name': self._meta.resource_name,
+        }
+
+        if isinstance(bundle_or_obj, Bundle):
+            kwargs['name'] = bundle_or_obj.obj.name # name is referenced in ModelResource
+        else:
+            kwargs['name'] = bundle_or_obj.name
+        
+        if self._meta.api_name is not None:
+            kwargs['api_name'] = self._meta.api_name
+        
+        return self._build_reverse_url('aawiki:api_dispatch_detail', kwargs=kwargs)
+
+    def get_object_list(self, request):
+        # inner get of object list... this is where you'll need to
+        # fetch the data from what ever data source
+        return Page.all()
+
+    def obj_get_list(self, request=None, **kwargs):
+        # outer get of object list... this calls get_object_list and
+        # could be a point at which additional filtering may be applied
+        return self.get_object_list(request)
+
+    def obj_get(self, request=None, **kwargs):
+        # get one object from data source
+        hex = request.GET.get('hex') if request else None
+        name = kwargs['name']
+
+        try:
+            return Page.get(name, hex=hex)
+        except KeyError:
+            raise NotFound("Object not found") 
+    
+    def obj_create_or_update(self, bundle, request=None, **kwargs):
+        bundle = self.full_hydrate(bundle)
+
+        message = bundle.data.get("message") or "<edited page %s>" % bundle.data['name']
+        user = request.user.username if request.user.username else "anonymous"
+        email = "%s@%s" % (user, request.META.get('REMOTE_ADDR', "localhost"))
+        
+        bundle.obj.commit(message=message, user=user, email=email)
+
+        return bundle
+    
+    def obj_create(self, bundle, request=None, **kwargs):
+        bundle.obj = Page()
+
+        return self.obj_create_or_update(bundle, request=request)
+
+    def obj_update(self, bundle, request=None, **kwargs):
+        bundle.data['name'] = kwargs['name']
+
+        try:
+            bundle.obj = Page.get(bundle.data['name'])
+        except KeyError:
+            raise NotFound("Object not found")  # will call "obj_create"
+        
+        return self.obj_create_or_update(bundle, request=request)
+
+    def obj_delete(self, request=None, **kwargs):
+        name = kwargs['name']
+
+        try:
+            obj = Page.get(name)
+        except KeyError:
+            raise NotFound("Object not found") 
+
+        #import ipdb; ipdb.set_trace()
+        request.DELETE = json.loads(request.raw_post_data)
+        message = request.DELETE.get("message") or "<no messages>"
+        user = request.user.username if request.user.username else "anonymous"
+        email = "%s@%s" % (user, request.META.get('REMOTE_ADDR', "localhost"))
+        
+        obj.delete(message=message, user=user, email=email)
+
+
+class SectionObject(object):
+    def __init__(self, initial=None):
+        self.__dict__['_data'] = {}
+
+        if hasattr(initial, 'items'):
+            self.__dict__['_data'] = initial
+
+    def __getattr__(self, name):
+        return self._data.get(name, None)
+
+    def __setattr__(self, name, value):
+        self.__dict__['_data'][name] = value
+
+    def to_dict(self):
+        return self._data
+
+
+class SectionResource(Resource):
+    header = fields.CharField(attribute='header')
+    body = fields.CharField(attribute='body')
+    index = fields.IntegerField(attribute='index', readonly=True)
+    start = fields.IntegerField(attribute='start', readonly=True)
+    end = fields.IntegerField(attribute='end', readonly=True)
+
+    class Meta:
+        resource_name = 'section'
+        object_class = SectionObject
+        authentication = Authentication()
+        authorization = Authorization()
+
+    def base_urls(self):
+        """
+        The standard URLs this ``Resource`` should respond to.
+        """
+        # Due to the way Django parses URLs, ``get_multiple`` won't work without
+        # a trailing slash.
+        return [
+            url(r"^(?P<parent_resource_name>page)/(?P<parent_name>\w[\w/\.-]*)/(?P<resource_name>%s)%s$" % (self._meta.resource_name, trailing_slash()), self.wrap_view('dispatch_list'), name="api_dispatch_list"),
+            url(r"^(?P<parent_resource_name>page)/(?P<parent_name>\w[\w/\.-]*)/(?P<resource_name>%s)/schema%s$" % (self._meta.resource_name, trailing_slash()), self.wrap_view('get_schema'), name="api_get_schema"),
+            url(r"^(?P<parent_resource_name>page)/(?P<parent_name>\w[\w/\.-]*)/(?P<resource_name>%s)/set/(?P<pk_list>\d[\d;]*)/$" % self._meta.resource_name, self.wrap_view('get_multiple'), name="api_get_multiple"),
+            url(r"^(?P<parent_resource_name>page)/(?P<parent_name>\w[\w/\.-]*)/(?P<resource_name>%s)/(?P<pk>\d+)%s$" % (self._meta.resource_name, trailing_slash()), self.wrap_view('dispatch_detail'), name="api_dispatch_detail"),
+        ]
+
+        ##/pages/Index/sections/
+        ##/pages/Index/sections/schema/
+        ##/pages/Index/sections/set/1;3
+        ##/pages/Index/sections/1/
+
+    # adapted this from ModelResource
+    def get_resource_uri(self, bundle_or_obj):
+        kwargs = {
+            'resource_name': self._meta.resource_name,
+        }
+
+        if isinstance(bundle_or_obj, Bundle):
+            kwargs['name'] = bundle_or_obj.obj.name # name is referenced in ModelResource
+        else:
+            kwargs['name'] = bundle_or_obj.name
+        
+        if self._meta.api_name is not None:
+            kwargs['api_name'] = self._meta.api_name
+        
+        return self._build_reverse_url('aawiki:api_dispatch_detail', kwargs=kwargs)
+
+    def get_object_list(self, request, **kwargs):
+        name = kwargs['parent_name']
+
+        try:
+            page = Page.get(name)
+        except KeyError:
+            raise NotFound("Object not found") 
+
+        return [SectionObject(i) for i in sectionalize(page.content)]
+
+    def obj_get_list(self, request=None, **kwargs):
+        return self.get_object_list(request, **kwargs)
+
+    def obj_get(self, request=None, **kwargs):
+        # get one object from data source
+        name = kwargs['parent_name']
+        try:
+            page = Page.get(name)
+        except KeyError:
+            raise NotFound("Object not found") 
+
+        section = sectionalize(page.content)[int(kwargs['pk'])]
+        return SectionObject(section)
+
+    def obj_create(self, bundle, request=None, **kwargs):
+        raise NotImplementedError()
+
+    def obj_update(self, bundle, request=None, **kwargs):
+        bundle.obj = SectionObject(initial=kwargs)
+        bundle = self.full_hydrate(bundle)
+
+        #page = self._meta.queryset.get(name=kwargs['name'])
+        page = self._meta.queryset.get(name='Index')
+        page.content = sectionalize_replace(page.content, int(kwargs['pk']), "bla")
+        page.save()
+        return bundle
+
+    #def obj_delete_list(self, request=None, **kwargs):
+        #bucket = self._bucket()
+
+        #for key in bucket.get_keys():
+            #obj = bucket.get(key)
+            #obj.delete()
+
+    #def obj_delete(self, request=None, **kwargs):
+        #bucket = self._bucket()
+        #obj = bucket.get(kwargs['pk'])
+        #obj.delete()
+
+    #def rollback(self, bundles):
+        #pass
+    def get_multiple(self, request, **kwargs):
+        """
+        Returns a serialized list of resources based on the identifiers
+        from the URL.
+
+        Calls ``obj_get`` to fetch only the objects requested. This method
+        only responds to HTTP GET.
+
+        Should return a HttpResponse (200 OK).
+        """
+        # TODO: implement. Should call obj_get method with kwargs pk and *name*.
+        return http.HttpNotImplemented()

aawiki/settings.py

@@ -21,3 +21,4 @@ import os.path
 
 
 GIT_DIR = getattr(settings, 'AA_GIT_DIR', os.path.join(settings.DIRNAME, "repositories"))
+REPO_PATH = getattr(settings, 'AA_REPO_PATH', os.path.join(settings.DIRNAME, "repo"))

aawiki/static/lib/toastr/GPL-LICENSE.txt

+        GNU GENERAL PUBLIC LICENSE
+           Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+ 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+          Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
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+
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+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.