/
extensions.py
161 lines (145 loc) · 5.83 KB
/
extensions.py
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from gettext import gettext as _
import hashlib
from datetime import datetime
import jinja2
from google.appengine.api import users
from flask import request, render_template, render_template_string, url_for
from werkzeug.urls import url_quote
import settings
from app.models import UserSettings
import views
from gae_mini_profiler.templatetags import profiler_includes
from js_css_packages import packages
from docs import doc_list
def context_processor():
return {
'users': users,
'user': users.get_current_user(),
'debug': settings.debug,
'debug_profiler_enabled': settings.debug_profiler_enabled,
'appname': settings.appname,
'appversion': settings.appversion,
'url2png': url2png,
'timesince': timesince,
'fmt_size': fmt_size,
'profiler_includes': profiler_includes,
'guider': render_guider,
'guider_link': guider_link,
'js_package': js_package,
'css_package': css_package,
'release_notes_flair': release_notes_flair,
'jquery_url': settings.jquery_url,
'locale': views._localeselector,
'available_locales': settings.available_locales,
'doc_link': doc_link,
'use_google_cloud_storage': settings.use_google_cloud_storage,
'google_bucket': settings.google_bucket,
}
def doc_link(doc_key=None, link_text=None, link_title=None, anchor_name=None, new_window=False):
if not doc_key:
doc_key = 'toc'
if not link_text:
link_text = _('Documentation')
slug, text, title = [doc for doc in doc_list if doc[0] == doc_key][0]
if link_text:
text = link_text
if link_title:
title = link_title
anchor = target = ''
if new_window:
target = ' target="_blank"'
if anchor_name:
anchor = '#' + url_quote(anchor_name)
link = '<a href="%s%s" title="%s"%s>%s</a>' % (url_for('views.docs', doc_key=slug), anchor, title, target, text)
return jinja2.Markup(render_template_string(link))
def js_package(package_name, scripts_only=False):
package = packages.javascript[package_name]
scripts = ""
if settings.debug:
list_js = []
for filename in package["files"]:
script_path = "'/static/js/%s-package/%s'" % (package_name, filename)
newscript = "\n"
# load the last script in this package with a label so callers can wait for it to be loaded.
# eg. head.js('file1.js', {'my_package': 'last.js'}); allows a template to later do this:
# head.js('my_package', function() { ... })
if filename == package["files"][-1]:
newscript += "{'%s': %s}" % (package_name, script_path)
else:
newscript += script_path
list_js.append(newscript)
scripts = ",\n".join(list_js)
else:
scripts = "{'%s': '/static/js/%s-package/%s'}" % (package_name, package_name, package["hashed-filename"])
if scripts_only:
return jinja2.Markup(scripts)
return jinja2.Markup(("head.js(%s);" % scripts))
def css_package(package_name):
package = packages.stylesheets[package_name]
src_dir = "/static/css/%s-package" % package_name
if settings.debug:
list_css = []
for filename in package["files"]:
list_css.append('<link rel="stylesheet" type="text/css" href="%s/%s" />\n' % (src_dir, filename))
return jinja2.Markup("".join(list_css))
else:
return jinja2.Markup('<link rel="stylesheet" type="text/css" href="%s/%s" />' % (src_dir, package["hashed-filename"]))
def render_guider(guider_name):
if UserSettings.show_guider(guider_name) or '__on_tour__' in request.args:
return jinja2.Markup('''
head('shared', function() {
_.delay(show_guider, 250, '%s', true);
});
''' % guider_name)
else:
return ''
def guider_link(guider_name, link_text, title_text=''):
return jinja2.Markup('<a href="#" id="guider_%s" onclick="guiders.hideAll(); show_guider(\'%s\', false); return false;" title="%s">%s</a>' % (guider_name, guider_name, title_text, link_text))
def release_notes_flair():
if not UserSettings.has_seen_version(settings.appversion_raw):
return jinja2.Markup(render_template('release_notes_flair.html'))
return ''
def url2png(url, bounds=None):
public_key = settings.url2png['user']
if not bounds:
bounds = settings.url2png['bounds']
token = hashlib.md5( "%s+%s" % (settings.url2png['password'], url) ).hexdigest()
return "//api.url2png.com/v3/%s/%s/%s/%s" % (public_key, token, bounds, url)
def timesince(dt, past_="ago", future_="from now", default="just now"):
"""
Returns string representing "time since"
or "time until" e.g.
3 days ago, 5 hours from now etc.
"""
now = datetime.utcnow()
if now > dt:
diff = now - dt
dt_is_past = True
else:
diff = dt - now
dt_is_past = False
periods = (
(diff.days / 365, "year", "years"),
(diff.days / 30, "month", "months"),
(diff.days / 7, "week", "weeks"),
(diff.days, "day", "days"),
(diff.seconds / 3600, "hour", "hours"),
(diff.seconds / 60, "minute", "minutes"),
(diff.seconds, "second", "seconds"),
)
for period, singular, plural in periods:
if period:
return "%d %s %s" % (period,
singular if period == 1 else plural,
past_ if dt_is_past else future_)
return default
def fmt_size(num):
"""
Returns a humanized version of the number of bytes passed in.
E.g., fmt_size(1024) => '1.0 KB'
"""
for x in ['bytes', 'KB', 'MB', 'GB', 'TB']:
if num < 1024.0:
formatter = '%3.1f %s' if x != 'bytes' else '%3.0f %s'
return formatter % (num, x)
num /= 1024.0