author | Tero Marttila <terom@fixme.fi> |
Sun, 13 Sep 2009 18:47:00 +0300 | |
changeset 141 | 65c98c9e1716 |
parent 140 | 6db2527b67cf |
permissions | -rw-r--r-- |
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""" |
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Some additional helpers |
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""" |
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import datetime |
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import calendar as _calendar |
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import qmsk.web.helpers |
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import preferences, urls, config, version |
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class Helpers (qmsk.web.helpers.Helpers) : |
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""" |
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Our set of helpers, inheriting from base helpers |
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""" |
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# set contructor... |
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set = set |
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# reference to calendar instance |
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calendar = _calendar.Calendar() |
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# list of (month_num, month_name) for the months in the year |
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months = list(enumerate(_calendar.month_name))[1:] |
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def version_link (self) : |
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""" |
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Returns a <a href> representing this version of the software |
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""" |
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return version.version_link_hg(config.HGWEB_URL, config.HG_WC_PATH) |
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def tz_name (self, tz) : |
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""" |
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Returns a string describing the given timezone |
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""" |
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return self.now().strftime(config.TIMEZONE_FMT) |
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def fmt_month (self, date) : |
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""" |
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Formats a month |
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""" |
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return date.strftime(config.MONTH_FMT) |
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def fmt_weekday (self, wday) : |
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""" |
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Formats an abbreviated weekday name |
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""" |
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return _calendar.day_abbr[wday] |
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def build_date (self, month, mday) : |
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""" |
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Returns a datetime.datetime for the given (month.year, month.month, mday) |
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""" |
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return self.ctx['prefs'][preferences.timezone].localize(datetime.datetime(month.year, month.month, mday)) |
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def now (self) : |
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""" |
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Build current time |
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""" |
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return self.ctx['prefs'][preferences.timezone].localize(datetime.datetime.now()) |
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def today (self) : |
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""" |
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Build today's date |
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""" |
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return self.now().date() |
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def is_today (self, dt) : |
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""" |
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Checks if the given datetime.datetime is today |
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""" |
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# compare with current date |
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return dt.date() == self.today() |
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def is_this_month (self, month) : |
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""" |
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Checks the given month is the current month |
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""" |
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today = self.today() |
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return (month.year == today.year and month.month == today.month) |
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@staticmethod |
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def _wrap_year (year, month) : |
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""" |
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Wraps month to between [1, 12], spilling overflow/underflow by to year. |
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Returns (year, month) |
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""" |
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# underflow? |
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if month == 0 : |
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# wrap to previous year |
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return (year - 1, 12) |
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# overflow? |
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elif month == 13 : |
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# wrap to next year |
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return (year + 1, 1) |
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# sane value |
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elif 1 <= month <= 12 : |
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return (year, month) |
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# insane value |
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else : |
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assert False, "invalid year/month: %d/%d" % (year, month) |
55 | 117 |
|
118 |
def prev_month (self, month) : |
|
119 |
""" |
|
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Returns the month preceding the given one (as a datetime.datetime) |
55 | 121 |
""" |
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|
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# previous month |
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y, m = self._wrap_year(month.year, month.month - 1) |
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|
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# build datetime |
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return datetime.datetime(year=y, month=m, day=1, tzinfo=month.tzinfo) |
55 | 128 |
|
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def next_month (self, month) : |
|
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""" |
|
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Returns the month following the given one (as a datetime.datetime) |
55 | 132 |
""" |
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|
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# previous month |
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y, m = self._wrap_year(month.year, month.month + 1) |
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|
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# build datetime |
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return datetime.datetime(year=y, month=m, day=1, tzinfo=month.tzinfo) |
60 | 139 |
|
140 |
def fmt_time (self, time=None) : |
|
141 |
""" |
|
142 |
Format given time, or current time |
|
143 |
""" |
|
144 |
||
145 |
# defaults |
|
146 |
if not time : |
|
147 |
time = self.now() |
|
55 | 148 |
|
60 | 149 |
return time.strftime(self.ctx['prefs'][preferences.time_format]) |
150 |
||
151 |
def fmt_date (self, date=None) : |
|
152 |
""" |
|
153 |
Format given date, or current date |
|
154 |
""" |
|
155 |
||
156 |
# defaults |
|
157 |
if not date : |
|
158 |
date = self.now() |
|
159 |
||
160 |
return date.strftime(self.ctx['prefs'][preferences.date_format]) |
|
161 |
||
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def url (self, url, **params) : |
63 | 163 |
""" |
164 |
Build URL with our request object |
|
165 |
""" |
|
166 |
||
167 |
return url.build(self.ctx['req'], **params) |
|
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|
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# old name |
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build_url = url |
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171 |
|
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def utc_timestamp (self, dtz) : |
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173 |
""" |
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174 |
Build an UTC timestamp from the given datetime |
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175 |
""" |
63 | 176 |
|
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177 |
return urls.types['ts'].build(dtz) |
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|
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def skip_next (self, count, skip) : |
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""" |
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181 |
Return skip offset for next page |
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182 |
""" |
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183 |
|
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184 |
return count + skip |
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185 |
|
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186 |
def skip_page (self, count, page) : |
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187 |
""" |
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188 |
Skip to page |
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189 |
""" |
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190 |
|
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191 |
if page : |
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192 |
return count * page |
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193 |
|
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194 |
else : |
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195 |
return None |
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|
196 |
|
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197 |
def skip_prev (self, count, skip) : |
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198 |
""" |
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199 |
Return skip offset for previous page, None for first page |
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200 |
""" |
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|
201 |
|
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|
202 |
if skip > count : |
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|
203 |
return skip - count |
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|
204 |
|
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205 |
else : |
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|
206 |
return None |
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|
207 |
|
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208 |
def max (self, *values) : |
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209 |
""" |
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210 |
Returns the largest of the given values |
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211 |
""" |
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|
212 |
|
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213 |
return max(values) |
79 | 214 |
|
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215 |
def select_options (self, key_values, selected_key=None) : |
79 | 216 |
""" |
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217 |
Render a series of <option> tags for <select>. |
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218 |
|
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219 |
The given key_values is an iterable of (key, value) pairs, key may be None if it's the same as value. |
79 | 220 |
""" |
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221 |
|
79 | 222 |
return '\n'.join( |
223 |
'\t<option%s%s>%s</option>' % ( |
|
113
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224 |
' value="%s"' % key if key is not None else '', |
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225 |
' selected="selected"' if (key if key is not None else value) == selected_key else '', |
79 | 226 |
value |
227 |
) for key, value in key_values |
|
228 |
) |
|
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229 |
|
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def prev_date (self, date) : |
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231 |
""" |
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232 |
Returns the previous date for the given datetime-date |
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233 |
""" |
79 | 234 |
|
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235 |
return datetime.datetime(date.year, date.month, date.day, tzinfo=date.tzinfo) - datetime.timedelta(days=1) |
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236 |
|
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237 |
def next_date (self, date) : |
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238 |
""" |
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239 |
Returns the previous date for the given datetime-date |
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240 |
""" |
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|
241 |
|
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242 |
return datetime.datetime(date.year, date.month, date.day, tzinfo=date.tzinfo) + datetime.timedelta(days=1) |
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243 |