qt5base-lts/util/local_database/dateconverter.py

121 lines
5.2 KiB
Python
Raw Normal View History

#!/usr/bin/env python
#############################################################################
##
## Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
## Contact: http://www.qt-project.org/legal
##
## This file is part of the test suite of the Qt Toolkit.
##
## $QT_BEGIN_LICENSE:LGPL$
## Commercial License Usage
## Licensees holding valid commercial Qt licenses may use this file in
## accordance with the commercial license agreement provided with the
## Software or, alternatively, in accordance with the terms contained in
## a written agreement between you and Digia. For licensing terms and
## conditions see http://qt.digia.com/licensing. For further information
## use the contact form at http://qt.digia.com/contact-us.
##
## GNU Lesser General Public License Usage
## Alternatively, this file may be used under the terms of the GNU Lesser
## General Public License version 2.1 as published by the Free Software
## Foundation and appearing in the file LICENSE.LGPL included in the
## packaging of this file. Please review the following information to
## ensure the GNU Lesser General Public License version 2.1 requirements
## will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
##
## In addition, as a special exception, Digia gives you certain additional
## rights. These rights are described in the Digia Qt LGPL Exception
## version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
##
## GNU General Public License Usage
## Alternatively, this file may be used under the terms of the GNU
## General Public License version 3.0 as published by the Free Software
## Foundation and appearing in the file LICENSE.GPL included in the
## packaging of this file. Please review the following information to
## ensure the GNU General Public License version 3.0 requirements will be
## met: http://www.gnu.org/copyleft/gpl.html.
##
##
## $QT_END_LICENSE$
##
#############################################################################
import re
def _convert_pattern(pattern):
# patterns from http://www.unicode.org/reports/tr35/#Date_Format_Patterns
qt_regexps = {
r"yyy{3,}" : "yyyy", # more that three digits hence convert to four-digit year
r"L" : "M", # stand-alone month names. not supported.
r"g{1,}": "", # modified julian day. not supported.
r"S{1,}" : "", # fractional seconds. not supported.
r"A{1,}" : "" # milliseconds in day. not supported.
}
qt_patterns = {
"G" : "", "GG" : "", "GGG" : "", "GGGG" : "", "GGGGG" : "", # Era. not supported.
"y" : "yyyy", # four-digit year without leading zeroes
"Q" : "", "QQ" : "", "QQQ" : "", "QQQQ" : "", # quarter. not supported.
"q" : "", "qq" : "", "qqq" : "", "qqqq" : "", # quarter. not supported.
"MMMMM" : "MMM", # narrow month name.
"LLLLL" : "MMM", # stand-alone narrow month name.
"l" : "", # special symbol for chinese leap month. not supported.
"w" : "", "W" : "", # week of year/month. not supported.
"D" : "", "DD" : "", "DDD" : "", # day of year. not supported.
"F" : "", # day of week in month. not supported.
"E" : "ddd", "EE" : "ddd", "EEE" : "ddd", "EEEEE" : "ddd", "EEEE" : "dddd", # day of week
"e" : "ddd", "ee" : "ddd", "eee" : "ddd", "eeeee" : "ddd", "eeee" : "dddd", # local day of week
"c" : "ddd", "cc" : "ddd", "ccc" : "ddd", "ccccc" : "ddd", "cccc" : "dddd", # stand-alone local day of week
"a" : "AP", # AM/PM
"K" : "h", # Hour 0-11
"k" : "H", # Hour 1-24
"j" : "", # special reserved symbol.
"z" : "t", "zz" : "t", "zzz" : "t", "zzzz" : "t", # timezone
"Z" : "t", "ZZ" : "t", "ZZZ" : "t", "ZZZZ" : "t", # timezone
"v" : "t", "vv" : "t", "vvv" : "t", "vvvv" : "t", # timezone
"V" : "t", "VV" : "t", "VVV" : "t", "VVVV" : "t" # timezone
}
if qt_patterns.has_key(pattern):
return qt_patterns[pattern]
for r,v in qt_regexps.items():
pattern = re.sub(r, v, pattern)
return pattern
def convert_date(input):
result = ""
patterns = "GyYuQqMLlwWdDFgEecahHKkjmsSAzZvV"
last = ""
inquote = 0
chars_to_strip = " -"
for c in input:
if c == "'":
inquote = inquote + 1
if inquote % 2 == 0:
if c in patterns:
if not last:
last = c
else:
if c in last:
last += c
else:
# pattern changed
converted = _convert_pattern(last)
result += converted
if not converted:
result = result.rstrip(chars_to_strip)
last = c
continue
if last:
# pattern ended
converted = _convert_pattern(last)
result += converted
if not converted:
result = result.rstrip(chars_to_strip)
last = ""
result += c
if last:
converted = _convert_pattern(last)
result += converted
if not converted:
result = result.rstrip(chars_to_strip)
return result.lstrip(chars_to_strip)