--- /dev/null
+# coding: utf-8
+
+import os, re
+from time import gmtime
+from django.template import Library, Node, Variable, VariableDoesNotExist, TemplateSyntaxError
+from django.conf import settings
+from django.utils.encoding import force_unicode
+
+# filebrowser imports
+from filebrowser.fb_settings import MEDIA_ROOT, MEDIA_URL, VERSIONS
+from filebrowser.functions import _url_to_path, _path_to_url, _get_version_path, _version_generator
+from filebrowser.base import FileObject
+
+register = Library()
+
+class VersionNode(Node):
+ def __init__(self, src, version_prefix):
+ self.src = Variable(src)
+ if (version_prefix[0] == version_prefix[-1] and version_prefix[0] in ('"', "'")):
+ self.version_prefix = version_prefix[1:-1]
+ else:
+ self.version_prefix = None
+ self.version_prefix_var = Variable(version_prefix)
+
+ def render(self, context):
+ try:
+ source = self.src.resolve(context)
+ except VariableDoesNotExist:
+ return None
+ if self.version_prefix:
+ version_prefix = self.version_prefix
+ else:
+ try:
+ version_prefix = self.version_prefix_var.resolve(context)
+ except VariableDoesNotExist:
+ return None
+ try:
+ version_path = _get_version_path(_url_to_path(str(source)), version_prefix)
+ if not os.path.isfile(os.path.join(MEDIA_ROOT, version_path)):
+ # create version
+ version_path = _version_generator(_url_to_path(str(source)), version_prefix)
+ elif os.path.getmtime(os.path.join(MEDIA_ROOT, _url_to_path(str(source)))) > os.path.getmtime(os.path.join(MEDIA_ROOT, version_path)):
+ # recreate version if original image was updated
+ version_path = _version_generator(_url_to_path(str(source)), version_prefix, force=True)
+ return _path_to_url(version_path)
+ except:
+ return ""
+
+
+def version(parser, token):
+ """
+ Displaying a version of an existing Image according to the predefined VERSIONS settings (see fb_settings).
+ {% version field_name version_prefix %}
+
+ Use {% version my_image 'medium' %} in order to display the medium-size
+ version of an Image stored in a field name my_image.
+
+ version_prefix can be a string or a variable. if version_prefix is a string, use quotes.
+ """
+
+ try:
+ tag, src, version_prefix = token.split_contents()
+ except:
+ raise TemplateSyntaxError, "%s tag requires 2 arguments" % token.contents.split()[0]
+ if (version_prefix[0] == version_prefix[-1] and version_prefix[0] in ('"', "'")) and version_prefix.lower()[1:-1] not in VERSIONS:
+ raise TemplateSyntaxError, "%s tag received bad version_prefix %s" % (tag, version_prefix)
+ return VersionNode(src, version_prefix)
+
+
+class VersionObjectNode(Node):
+ def __init__(self, src, version_prefix, var_name):
+ self.var_name = var_name
+ self.src = Variable(src)
+ if (version_prefix[0] == version_prefix[-1] and version_prefix[0] in ('"', "'")):
+ self.version_prefix = version_prefix[1:-1]
+ else:
+ self.version_prefix = None
+ self.version_prefix_var = Variable(version_prefix)
+
+ def render(self, context):
+ try:
+ source = self.src.resolve(context)
+ except VariableDoesNotExist:
+ return None
+ if self.version_prefix:
+ version_prefix = self.version_prefix
+ else:
+ try:
+ version_prefix = self.version_prefix_var.resolve(context)
+ except VariableDoesNotExist:
+ return None
+ try:
+ version_path = _get_version_path(_url_to_path(str(source)), version_prefix)
+ if not os.path.isfile(os.path.join(MEDIA_ROOT, version_path)):
+ # create version
+ version_path = _version_generator(_url_to_path(str(source)), version_prefix)
+ elif os.path.getmtime(os.path.join(MEDIA_ROOT, _url_to_path(str(source)))) > os.path.getmtime(os.path.join(MEDIA_ROOT, version_path)):
+ # recreate version if original image was updated
+ version_path = _version_generator(_url_to_path(str(source)), version_prefix, force=True)
+ context[self.var_name] = FileObject(version_path)
+ except:
+ context[self.var_name] = ""
+ return ''
+
+
+def version_object(parser, token):
+ """
+ Returns a context variable 'version_object'.
+ {% version_object field_name version_prefix %}
+
+ Use {% version_object my_image 'medium' %} in order to retrieve the medium
+ version of an Image stored in a field name my_image.
+ Use {% version_object my_image 'medium' as var %} in order to use 'var' as
+ your context variable.
+
+ version_prefix can be a string or a variable. if version_prefix is a string, use quotes.
+ """
+
+ try:
+ #tag, src, version_prefix = token.split_contents()
+ tag, arg = token.contents.split(None, 1)
+ except:
+ raise TemplateSyntaxError, "%s tag requires arguments" % token.contents.split()[0]
+ m = re.search(r'(.*?) (.*?) as (\w+)', arg)
+ if not m:
+ raise TemplateSyntaxError, "%r tag had invalid arguments" % tag
+ src, version_prefix, var_name = m.groups()
+ if (version_prefix[0] == version_prefix[-1] and version_prefix[0] in ('"', "'")) and version_prefix.lower()[1:-1] not in VERSIONS:
+ raise TemplateSyntaxError, "%s tag received bad version_prefix %s" % (tag, version_prefix)
+ return VersionObjectNode(src, version_prefix, var_name)
+
+
+class VersionSettingNode(Node):
+ def __init__(self, version_prefix):
+ if (version_prefix[0] == version_prefix[-1] and version_prefix[0] in ('"', "'")):
+ self.version_prefix = version_prefix[1:-1]
+ else:
+ self.version_prefix = None
+ self.version_prefix_var = Variable(version_prefix)
+
+ def render(self, context):
+ if self.version_prefix:
+ version_prefix = self.version_prefix
+ else:
+ try:
+ version_prefix = self.version_prefix_var.resolve(context)
+ except VariableDoesNotExist:
+ return None
+ context['version_setting'] = VERSIONS[version_prefix]
+ return ''
+
+
+def version_setting(parser, token):
+ """
+ Get Information about a version setting.
+ """
+
+ try:
+ tag, version_prefix = token.split_contents()
+ except:
+ raise TemplateSyntaxError, "%s tag requires 1 argument" % token.contents.split()[0]
+ if (version_prefix[0] == version_prefix[-1] and version_prefix[0] in ('"', "'")) and version_prefix.lower()[1:-1] not in VERSIONS:
+ raise TemplateSyntaxError, "%s tag received bad version_prefix %s" % (tag, version_prefix)
+ return VersionSettingNode(version_prefix)
+
+
+register.tag(version)
+register.tag(version_object)
+register.tag(version_setting)
+
+
fnp / redakcja.git / blobdiff