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# -*- coding: utf-8 -*-
import logging
import md5
import os
import time
from django import forms
from django.http import HttpResponse
from django.shortcuts import render_to_response
from django.utils import simplejson as json
from google.appengine.api import users
from pygments import highlight
from pygments.formatters import HtmlFormatter
from pygments.lexers import SqlLexer, PythonLexer, PhpLexer
import sqlparse
INITIAL_SQL = "select * from foo join bar on val1 = val2 where id = 123;"
EXAMPLES_DIR = os.path.join(os.path.dirname(__file__), '../examples')
def _get_user_image(user):
if user is None:
return None
digest = md5.new(user.email().lower()).hexdigest()
if os.environ['SERVER_SOFTWARE'].startswith('Dev'):
host = 'localhost%3A8080'
else:
host = 'sqlformat.appspot.com'
default = 'http%3A%2F%2F'+host+'%2Fstatic%2Fblank.gif'
return 'http://gravatar.com/avatar/%s?s=32&d=%s' % (digest, default)
def _get_examples():
fnames = os.listdir(EXAMPLES_DIR)
fnames.sort()
return fnames
class FormOptions(forms.Form):
data = forms.CharField(widget=forms.Textarea({'class': 'resizable'}),
initial=INITIAL_SQL, required=False)
datafile = forms.FileField(required=False)
highlight = forms.BooleanField(initial=True, required=False,
widget=forms.CheckboxInput(),
label='Enable syntax highlighting')
remove_comments = forms.BooleanField(initial=False, required=False,
widget=forms.CheckboxInput(),
label='Remove comments')
keyword_case = forms.CharField(
widget=forms.Select(choices=(('', 'Unchanged'),
('lower', 'Lower case'),
('upper', 'Upper case'),
('capitalize', 'Capitalize'))),
required=False, initial='upper', label='Keywords')
identifier_case = forms.CharField(
widget=forms.Select(choices=(('', 'Unchanged'),
('lower', 'Lower case'),
('upper', 'Upper case'),
('capitalize', 'Capitalize'))),
required=False, initial='', label='Identifiers')
n_indents = forms.IntegerField(min_value=0, max_value=30,
initial=2, required=False,
label='spaces',
widget=forms.TextInput({'size': 2,
'maxlength': 2}))
# right_margin = forms.IntegerField(min_value=10, max_value=500,
# initial=60, required=False,
# label='characters',
# widget=forms.TextInput({'size': 3,
# 'maxlength': 3}))
output_format = forms.CharField(
widget=forms.Select(choices=(('sql', 'SQL'),
('python', 'Python'),
('php', 'PHP'),
)),
required=False, initial='sql', label='Language')
def clean(self):
super(FormOptions, self).clean()
data = self.cleaned_data.get('data')
logging.info(self.files)
if 'datafile' in self.files:
self._datafile = self.files['datafile'].read()
else:
self._datafile = None
if not data and not self._datafile:
raise forms.ValidationError('Whoops, I need a file or text!')
elif data and self._datafile:
raise forms.ValidationError('Whoops, I need a file OR text!')
return self.cleaned_data
def get_data(self):
data = self.cleaned_data.get('data')
if self._datafile:
return self._datafile
else:
return data
def format_sql(form, format='html'):
data = form.cleaned_data
popts = {}
sql = form.get_data()
if data.get('remove_comments'):
popts['strip_comments'] = True
if data.get('keyword_case'):
popts['keyword_case'] = data.get('keyword_case')
if data.get('identifier_case'):
popts['identifier_case'] = data.get('identifier_case')
if data.get('n_indents', None) is not None:
popts['reindent'] = True
popts['indent_width'] = data.get('n_indents')
if data.get('right_margin', None) is not None:
popts['right_margin'] = data.get('right_margin')
if data.get('output_format', None) is not None:
popts['output_format'] = data.get('output_format')
sql = sqlparse.format(sql, **popts)
if format in ('html', 'json'):
if data.get('highlight', False):
if popts['output_format'] == 'python':
lexer = PythonLexer()
elif popts['output_format'] == 'php':
lexer = PhpLexer()
else:
lexer = SqlLexer()
sql = highlight(sql, lexer, HtmlFormatter())
else:
sql = ('<textarea class="resizable" '
'style="height: 350px; margin-top: 1em;">%s</textarea>'
% sql)
return sql
def index(request):
output = None
data = {}
proc_time = None
if request.method == 'POST':
logging.debug(request.POST)
form = FormOptions(request.POST, request.FILES)
if form.is_valid():
start = time.time()
output = format_sql(form,
format=request.POST.get('format', 'html'))
proc_time = time.time()-start
else:
form = FormOptions()
if request.POST.get('format', None) == 'json':
logging.warning(form.errors)
data['errors'] = str(form.errors)
data['output'] = output
logging.info('%r', proc_time)
data['proc_time'] = '%.3f' % proc_time or 0.0
data = json.dumps(data)
return HttpResponse(data, content_type='text/x-json')
elif request.POST.get('format', None) == 'text':
if not form.is_valid():
data = str(form.errors) # XXX convert to plain text
else:
data = output
return HttpResponse(data, content_type='text/plain')
return render_to_response('index.html',
{'form': form, 'output': output,
'proc_time': proc_time and '%.3f' % proc_time or None,
'user': users.get_current_user(),
'login_url': users.create_login_url('/'),
'logout_url': users.create_logout_url('/'),
'userimg': _get_user_image(users.get_current_user()),
'examples': _get_examples()})
def format(request):
if request.method == 'POST':
form = FormOptions(request.POST)
if form.is_valid():
response = format_sql(form, format='text')
else:
response = 'ERROR: %s' % str(form.errors)
else:
response = 'POST request required'
return HttpResponse(response, content_type='text/plain')
def source(request):
return render_to_response('source.html')
def about(request):
return render_to_response('about.html')
def api(request):
return render_to_response('api.html')
def load_example(request):
fname = request.POST.get('fname')
if fname is None:
answer = 'Uups, I\'ve got no filename...'
elif fname not in _get_examples():
answer = 'Hmm, I think you don\'t want to do that.'
else:
answer = open(os.path.join(EXAMPLES_DIR, fname)).read()
data = json.dumps({'answer': answer})
return HttpResponse(data, content_type='text/x-json')
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