import sys
import cgi
import string
import re
class Tag:
"""A Tag URI"""
def __init__(self, tag):
self.tag = tag
self.domain = ''
self.date = ''
self.ldate = ''
self.sdate = ''
self.path = ''
self.httpdate = ''
self.httppath = ''
self.http = ''
def parse(self):
"""Parses a tag using a RegExp into the component parts."""
for m in re.compile(r'tag:([^,]+),([^:]+):(.*)', re.S).findall(self.tag):
self.domain = m[0]
self.date = m[1]
self.path = m[2]
def convert(self):
self.parse()
self.dateparse()
self.datetohttpdate()
self.httppath = string.replace(self.path, ':', '/')
self.http = 'http://'+self.domain+'/'+self.httpdate+'/'+self.httppath
def dateparse(self):
"""Takes date and parses it into either ldate or sdate and ldate"""
if self.date[0] == 't':
self.sdate = self.date[1:]
year, month, day = [], 1, 1
for m in re.compile(r'([^-]+).*', re.S).findall(self.sdate):
year.append(int(m))
for m in re.compile(r'[^-]+-([^-]+)', re.S).findall(self.sdate):
if m: month = int(m)
for m in re.compile(r'[^-]+-[^-]+-([^-]+)', re.S).findall(self.sdate):
if m: day = int(m)
year = str(year[0] + 2000)
if month <= 9: month = '0' + str(month)
month = str(month)
if day <= 9: day = '0' + str(day)
day = str(day)
date = year + '-' + month + '-' + day
self.ldate = date
else: self.ldate = self.date
def datetohttpdate(self):
"""Converts the date into an HTTP date."""
if self.sdate:
year, month, day = [], 1, 1
for m in re.compile(r'([^-]+)', re.S).findall(self.sdate):
year.append(int(m))
for m in re.compile(r'[^-]+-([^-]+)', re.S).findall(self.sdate):
if m: month = int(m)
for m in re.compile(r'[^-]+-[^-]+-([^-]+)', re.S).findall(self.sdate):
if m: day = int(m)
year = str(year[0] + 2000)
if month <= 9: month = '0' + str(month)
month = str(month)
if day <= 9: day = '0' + str(day)
day = str(day)
if month == '01' and day == '01':
date = year
elif month != '01' and day == '01':
date = year + '/' + month
else:
date = year + '/' + month + '/' + day
self.httpdate = date
else: self.httpdate = string.replace(self.date,'-','/')
def parse(form):
tag = form['tag'].value
tag = Tag(tag)
tag.convert()
tag = tag.http
print 'Content-Type: text/html\n'
print '\n'
print '\ntag'
print '\n\n' + tag + '\n'
print '\n'
def doform():
form = cgi.FieldStorage()
form_ok = 0
if form.has_key('tag'):
parse(form)
else:
print 'Content-Type: text/html\n'
print 'Error
'
print 'Please fill in the tag field.'
def run():
sys.argv.append('')
if sys.argv[1]:
tag = Tag(str(sys.argv[1]))
tag.convert()
print tag.http
else: doform()
if __name__ == '__main__':
run()