X-Git-Url: https://git.mdrn.pl/redakcja.git/blobdiff_plain/70f40902039374237390366dd06319fed5c45ee7..3a100c86bdaa0dbdd25796286ef3b6d4888911d8:/apps/explorer/views.py

diff --git a/apps/explorer/views.py b/apps/explorer/views.py
index 585edccb..18f79b3e 100644
--- a/apps/explorer/views.py
+++ b/apps/explorer/views.py
@@ -1,25 +1,26 @@
-from librarian import html
-import hg, urllib2, time
-
-from django.utils import simplejson as json
-from lxml import etree
-from librarian import dcparser
-
-from django.views.generic.simple import direct_to_template
+# -*- coding: utf-8 -*-
+import urllib2
+import hg
+from librarian import html, parser, dcparser, ParseError, ValidationError
 
 from django.conf import settings
-from django.http import HttpResponseRedirect, HttpResponse
+from django.contrib.auth.decorators import login_required, permission_required
 
 from django.core.urlresolvers import reverse
-from django.core.paginator import Paginator, InvalidPage, EmptyPage
-
-from django.contrib.auth.decorators import login_required, permission_required
+from django.http import HttpResponseRedirect, HttpResponse
+from django.utils import simplejson as json
+from django.views.generic.simple import direct_to_template
 
 from explorer import forms, models
+from toolbar import models as toolbar_models
 
 #
 # Some useful decorators
-#
+
+def file_branch(path, user=None):
+    return ('personal_'+user.username + '_' if user is not None else '') \
+        + 'file_' + path
+
 def with_repo(view):
     """Open a repository for this view"""
     def view_with_repo(request, *args, **kwargs):          
@@ -35,7 +36,7 @@ def ajax_login_required(view):
         if request.user.is_authenticated():
             return view(request, *args, **kwargs)
         # not authenticated
-        return HttpResponse( json.dumps({'result': 'access_denied'}) );
+        return HttpResponse( json.dumps({'result': 'access_denied', 'errors': ['Brak dostępu.']}) );
     return view_with_auth
 
 #
@@ -43,41 +44,50 @@ def ajax_login_required(view):
 #
 @with_repo
 def file_list(request, repo):
-    paginator = Paginator( repo.file_list('default'), 100);
+    #
+    latest_default = repo.get_branch_tip('default')
+    files = [ f for f in repo.repo[latest_default] if not f.startswith('.')]
     bookform = forms.BookUploadForm()
 
-    try:
-        page = int(request.GET.get('page', '1'))
-    except ValueError:
-        page = 1
-
-    try:
-        files = paginator.page(page)
-    except (EmptyPage, InvalidPage):
-        files = paginator.page(paginator.num_pages)
-
     return direct_to_template(request, 'explorer/file_list.html', extra_context={
-        'files': files, 'page': page, 'bookform': bookform,
+        'files': files, 'bookform': bookform,
     })
 
 @permission_required('explorer.can_add_files')
 @with_repo
 def file_upload(request, repo):
-    form = forms.BookUploadForm(request.POST, request.FILES)
-    if form.is_valid():
-        f = request.FILES['file']        
-
-        def upload_action():
-            print 'Adding file: %s' % f.name
-            repo._add_file(f.name, f.read().decode('utf-8'))
-            repo._commit(message="File %s uploaded from platform by %s" %
-                (f.name, request.user.username), user=request.user.username)
-
-        repo.in_branch(upload_action, 'default')
-        return HttpResponseRedirect( reverse('editor_view', kwargs={'path': f.name}) )
-
-    return direct_to_template(request, 'explorer/file_upload.html',
-        extra_context = {'form' : form} )
+    other_errors = []
+    if request.method == 'POST':
+        form = forms.BookUploadForm(request.POST, request.FILES)
+        if form.is_valid():
+            try:
+                # prepare the data
+                f = request.FILES['file']
+                decoded = f.read().decode('utf-8')
+                path = form.cleaned_data['bookname']
+                
+                def upload_action():
+                    repo._add_file(path ,decoded.encode('utf-8') )
+                    repo._commit(message="File %s uploaded by user %s" % \
+                        (path, request.user.username), user=request.user.username)
+
+                repo.in_branch(upload_action, 'default')
+
+                # if everything is ok, redirect to the editor
+                return HttpResponseRedirect( reverse('editor_view',
+                        kwargs={'path': path}) )
+
+            except hg.RepositoryException, e:
+                other_errors.append(u'Błąd repozytorium: ' + unicode(e) )
+            #except UnicodeDecodeError, e:
+            #    other_errors.append(u'Niepoprawne kodowanie pliku: ' + e.reason \
+            #     + u'. Żądane kodowanie: ' + e.encoding)
+        # invalid form
+
+    # get
+    form = forms.BookUploadForm()
+    return direct_to_template(request, 'explorer/file_upload.html',\
+        extra_context = {'form' : form, 'other_errors': other_errors})
    
 #
 # Edit the file
@@ -87,70 +97,260 @@ def file_upload(request, repo):
 @with_repo
 def file_xml(request, repo, path):
     if request.method == 'POST':
+        errors = None
+        warnings = None
         form = forms.BookForm(request.POST)
         if form.is_valid():
             print 'Saving whole text.', request.user.username
-            def save_action():
-                print 'In branch: ' + repo.repo[None].branch()
-                repo._add_file(path, form.cleaned_data['content'])                
-                repo._commit(message=(form.cleaned_data['commit_message'] or 'Lokalny zapis platformy.'), user=request.user.username)
+            try:
+                # encode it back to UTF-8, so we can put it into repo
+                encoded_data = form.cleaned_data['content'].encode('utf-8')
+
+                def save_action():                    
+                    repo._add_file(path, encoded_data)
+                    repo._commit(message=(form.cleaned_data['commit_message'] or 'Lokalny zapis platformy.'),\
+                         user=request.user.username)
+
+                try:
+                    # wczytaj dokument z ciągu znaków -> weryfikacja
+                    document = parser.WLDocument.from_string(form.cleaned_data['content'])
+                except (ParseError, ValidationError), e:
+                    warnings = [u'Niepoprawny dokument XML: ' + unicode(e.message)]
+
+                #  save to user's branch
+                repo.in_branch(save_action, file_branch(path, request.user) );
+            except UnicodeDecodeError, e:
+                errors = [u'Błąd kodowania danych przed zapisem: ' + unicode(e.message)]
+            except hg.RepositoryException, e:
+                errors = [u'Błąd repozytorium: ' + unicode(e.message)]            
+
+        if not errors:
+            errors = dict( (field[0], field[1].as_text()) for field in form.errors.iteritems() )
+
+        return HttpResponse( json.dumps({'result': errors and 'error' or 'ok',
+            'errors': errors, 'warnings': warnings}) );
+
+    form = forms.BookForm()
+    data = repo.get_file(path, file_branch(path, request.user))
+    form.fields['content'].initial = data
+    return HttpResponse( json.dumps({'result': 'ok', 'content': data}) )
+
+@ajax_login_required
+@with_repo
+def file_update_local(request, path, repo):
+    result = None
+    errors = None
+    
+    wlock = repo.write_lock()
+    try:
+        tipA = repo.get_branch_tip('default')
+        tipB = repo.get_branch_tip( file_branch(path, request.user) )
 
-            print repo.in_branch(save_action, models.user_branch(request.user) );
-            result = "ok"
+        nodeA = repo.getnode(tipA)
+        nodeB = repo.getnode(tipB)
+        
+        # do some wild checks - see file_commit() for more info
+        if (repo.common_ancestor(tipA, tipB) == nodeA) \
+        or (nodeB in nodeA.parents()):
+            result = 'nothing-to-do'
         else:
-            result = "error"
+            # Case 2+
+            repo.merge_revisions(tipB, tipA, \
+                request.user.username, 'Personal branch update.')
+            result = 'done'
+    except hg.UncleanMerge, e:
+        errors = [e.message]
+        result = 'fatal-error'
+    except hg.RepositoryException, e:
+        errors = [e.message]
+        result = 'fatal-error'
+    finally:
+        wlock.release()
 
-        errors = dict( (field[0], field[1].as_text()) for field in form.errors.iteritems() )
-        return HttpResponse( json.dumps({'result': result, 'errors': errors}) );
+    if result is None:
+        raise Exception("Ouch, this shouldn't happen!")
+    
+    return HttpResponse( json.dumps({'result': result, 'errors': errors}) );
 
-    form = forms.BookForm()
-    data = repo.get_file(path, models.user_branch(request.user))
-    form.fields['content'].initial = data
-    return HttpResponse( json.dumps({'result': 'ok', 'content': data}) ) 
+@ajax_login_required
+@with_repo
+def file_commit(request, path, repo):
+    result = None
+    errors = None
+    local_modified = False
+    if request.method == 'POST':
+        form = forms.MergeForm(request.POST)
+
+        if form.is_valid():           
+            wlock = repo.write_lock()
+            try:
+                tipA = repo.get_branch_tip('default')
+                tipB = repo.get_branch_tip( file_branch(path, request.user) )
+
+                nodeA = repo.getnode(tipA)
+                nodeB = repo.getnode(tipB)
+
+                print repr(nodeA), repr(nodeB), repo.common_ancestor(tipA, tipB), repo.common_ancestor(tipB, tipA)
+
+                if repo.common_ancestor(tipB, tipA) == nodeA:
+                    # Case 1:
+                    #         * tipB
+                    #         |
+                    #         * <- can also be here!
+                    #        /|
+                    #       / |
+                    # tipA *  *
+                    #      |  |
+                    # The local branch has been recently updated,
+                    # so we don't need to update yet again, but we need to
+                    # merge down to default branch, even if there was
+                    # no commit's since last update
+                    repo.merge_revisions(tipA, tipB, \
+                        request.user.username, form.cleaned_data['message'])
+                    result = 'done'
+                elif any( p.branch()==nodeB.branch() for p in nodeA.parents()):
+                    # Case 2:
+                    #
+                    # tipA *  * tipB
+                    #      |\ |
+                    #      | \|
+                    #      |  * 
+                    #      |  |
+                    # Default has no changes, to update from this branch
+                    # since the last merge of local to default.
+                    if nodeB not in nodeA.parents():
+                        repo.merge_revisions(tipA, tipB, \
+                            request.user.username, form.cleaned_data['message'])
+                        result = 'done'
+                    else:
+                        result = 'nothing-to-do'
+                elif repo.common_ancestor(tipA, tipB) == nodeB:
+                    # Case 3:
+                    # tipA * 
+                    #      |
+                    #      * <- this case overlaps with previos one
+                    #      |\
+                    #      | \
+                    #      |  * tipB
+                    #      |  |
+                    #
+                    # There was a recent merge to the defaul branch and
+                    # no changes to local branch recently.
+                    # 
+                    # Use the fact, that user is prepared to see changes, to
+                    # update his branch if there are any
+                    if nodeB not in nodeA.parents():
+                        repo.merge_revisions(tipB, tipA, \
+                            request.user.username, 'Personal branch update during merge.')
+                        local_modified = True
+                        result = 'done'
+                    else:
+                        result = 'nothing-to-do'
+                else:
+                    # both branches have changes made to them, so
+                    # first do an update
+                    repo.merge_revisions(tipB, tipA, \
+                        request.user.username, 'Personal branch update during merge.')
+
+                    local_modified = True
+
+                    # fetch the new tip
+                    tipB = repo.get_branch_tip( file_branch(path, request.user) )
+
+                    # and merge back to the default
+                    repo.merge_revisions(tipA, tipB, \
+                        request.user.username, form.cleaned_data['message'])
+                    result = 'done'
+            except hg.UncleanMerge, e:
+                errors = [e.message]
+                result = 'fatal-error'
+            except hg.RepositoryException, e:
+                errors = [e.message]
+                result = 'fatal-error'
+            finally:
+                wlock.release()
+                
+        if result is None:
+            errors = [ form.errors['message'].as_text() ]
+            if len(errors) > 0:
+                result = 'fatal-error'
+
+        return HttpResponse( json.dumps({'result': result, 'errors': errors, 'localmodified': local_modified}) );
+
+    return HttpResponse( json.dumps({'result': 'fatal-error', 'errors': ['No data posted']}) )
+    
 
 @ajax_login_required
 @with_repo
 def file_dc(request, path, repo):
+    errors = None
+
     if request.method == 'POST':
         form = forms.DublinCoreForm(request.POST)
         
         if form.is_valid():
+            
             def save_action():
                 file_contents = repo._get_file(path)
-                doc = etree.fromstring(file_contents)
-
-                book_info = dcparser.BookInfo()
-                for name, value in form.cleaned_data.items():
-                    if value is not None and value != '':
-                        setattr(book_info, name, value)
-                rdf = etree.XML(book_info.to_xml())
-
-                old_rdf = doc.getroottree().find('//{http://www.w3.org/1999/02/22-rdf-syntax-ns#}RDF')
-                old_rdf.getparent().remove(old_rdf)
-                doc.insert(0, rdf)
-                repo._add_file(path, etree.tostring(doc, pretty_print=True, encoding=unicode))
-                repo._commit(message=(form.cleaned_data['commit_message'] or 'Lokalny zapis platformy.'), user=request.user.username)
 
-            repo.in_branch(save_action, models.user_branch(request.user) )
-
-            result = "ok"
-        else:
-            result = "error" 
-
-        errors = dict( (field[0], field[1].as_text()) for field in form.errors.iteritems() )
-        return HttpResponse( json.dumps({'result': result, 'errors': errors}) );
+                # wczytaj dokument z repozytorium
+                document = parser.WLDocument.from_string(file_contents)                    
+                document.book_info.update(form.cleaned_data)             
+
+                # zapisz
+                repo._write_file(path, document.serialize().encode('utf-8'))
+                repo._commit( \
+                    message=(form.cleaned_data['commit_message'] or 'Lokalny zapis platformy.'), \
+                    user=request.user.username )
+                
+            try:
+                repo.in_branch(save_action, file_branch(path, request.user) )
+            except UnicodeEncodeError, e:
+                errors = ['Bład wewnętrzny: nie można zakodować pliku do utf-8']
+            except (ParseError, ValidationError), e:
+                errors = [e.message]
+
+        if errors is None:
+            errors = ["Pole '%s': %s\n" % (field[0], field[1].as_text()) for field in form.errors.iteritems()]
+
+        return HttpResponse( json.dumps({'result': errors and 'error' or 'ok', 'errors': errors}) );
+    
+    # this is unused currently, but may come in handy 
+    content = []
     
-    fulltext = repo.get_file(path, models.user_branch(request.user))
-    form = forms.DublinCoreForm(text=fulltext)       
-    return HttpResponse( json.dumps({'result': 'ok', 'content': fulltext}) ) 
+    try:
+        fulltext = repo.get_file(path, file_branch(path, request.user))
+        bookinfo = dcparser.BookInfo.from_string(fulltext)
+        content = bookinfo.to_dict()
+    except (ParseError, ValidationError), e:
+        errors = [e.message]
+
+    return HttpResponse( json.dumps({'result': errors and 'error' or 'ok', 
+        'errors': errors, 'content': content }) ) 
 
 # Display the main editor view
 
 @login_required
-def display_editor(request, path):
-    return direct_to_template(request, 'explorer/editor.html', extra_context={
-        'hash': path, 'panel_list': ['lewy', 'prawy'],
-    })
+@with_repo
+def display_editor(request, path, repo):    
+
+    # this is the only entry point where we create an autobranch for the user
+    # if it doesn't exists. All other views SHOULD fail.
+    def ensure_branch_exists():
+        parent = repo.get_branch_tip('default')
+        repo._create_branch(file_branch(path, request.user), parent)
+        
+    try:
+        repo.with_wlock(ensure_branch_exists)
+        
+        return direct_to_template(request, 'explorer/editor.html', extra_context={
+            'hash': path,
+            'panel_list': ['lewy', 'prawy'],
+            'scriptlets': toolbar_models.Scriptlet.objects.all()
+        })
+    except KeyError:
+        return direct_to_template(request, 'explorer/nofile.html', \
+            extra_context = { 'path': path })
 
 # ===============
 # = Panel views =
@@ -159,8 +359,7 @@ def display_editor(request, path):
 @ajax_login_required
 @with_repo
 def xmleditor_panel(request, path, repo):
-    form = forms.BookForm()
-    text = repo.get_file(path, models.user_branch(request.user))
+    text = repo.get_file(path, file_branch(path, request.user))
     
     return direct_to_template(request, 'explorer/panels/xmleditor.html', extra_context={
         'fpath': path,
@@ -178,25 +377,33 @@ def gallery_panel(request, path):
 @ajax_login_required
 @with_repo
 def htmleditor_panel(request, path, repo):
-    user_branch = models.user_branch(request.user)
-    return direct_to_template(request, 'explorer/panels/htmleditor.html', extra_context={
-        'fpath': path,
-        'html': html.transform(repo.get_file(path, user_branch), is_file=False),
-    })
- 
+    user_branch = file_branch(path, request.user)
+    try:
+        return direct_to_template(request, 'explorer/panels/htmleditor.html', extra_context={
+            'fpath': path,
+            'html': html.transform(repo.get_file(path, user_branch), is_file=False),
+        })
+    except (ParseError, ValidationError), e:
+        return direct_to_template(request, 'explorer/panels/parse_error.html', extra_context={
+            'fpath': path, 'exception_type': type(e).__name__, 'exception': e, 'panel_name': 'Edytor HTML'}) 
 
 @ajax_login_required
 @with_repo
 def dceditor_panel(request, path, repo):
-    user_branch = models.user_branch(request.user)
-    text = repo.get_file(path, user_branch)
-    form = forms.DublinCoreForm(text=text)       
-
-    return direct_to_template(request, 'explorer/panels/dceditor.html', extra_context={
-        'fpath': path,
-        'form': form,
-    })
+    user_branch = file_branch(path, request.user)
 
+    try:
+        doc_text = repo.get_file(path, user_branch)
+        document = parser.WLDocument.from_string(doc_text)
+        form = forms.DublinCoreForm(info=document.book_info)       
+        return direct_to_template(request, 'explorer/panels/dceditor.html', extra_context={
+            'fpath': path,
+            'form': form,
+        })
+    except (ParseError, ValidationError), e:
+        return direct_to_template(request, 'explorer/panels/parse_error.html', extra_context={
+            'fpath': path, 'exception_type': type(e).__name__, 'exception': e, 
+            'panel_name': 'Edytor DublinCore'}) 
 
 # =================
 # = Utility views =