Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 1 | # -*- coding: utf-8 -*- |
| 2 | """ |
| 3 | jinja.filters |
| 4 | ~~~~~~~~~~~~~ |
| 5 | |
| 6 | Bundled jinja filters. |
| 7 | |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 8 | :copyright: 2008 by Armin Ronacher, Christoph Hack. |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 9 | :license: BSD, see LICENSE for more details. |
| 10 | """ |
Georg Brandl | af31e4d | 2007-04-15 00:47:37 +0200 | [diff] [blame] | 11 | import re |
Armin Ronacher | fed86c1 | 2007-02-27 10:31:14 +0100 | [diff] [blame] | 12 | from random import choice |
Armin Ronacher | 1dcdac5 | 2007-12-09 22:53:46 +0100 | [diff] [blame] | 13 | try: |
| 14 | from operator import itemgetter |
| 15 | except ImportError: |
| 16 | itemgetter = lambda a: lambda b: b[a] |
Armin Ronacher | fed86c1 | 2007-02-27 10:31:14 +0100 | [diff] [blame] | 17 | from urllib import urlencode, quote |
Christoph Hack | f4fdc72 | 2008-04-08 16:48:30 +0200 | [diff] [blame] | 18 | from jinja.utils import escape |
Armin Ronacher | fed86c1 | 2007-02-27 10:31:14 +0100 | [diff] [blame] | 19 | |
| 20 | |
Armin Ronacher | eaf493e | 2007-10-01 22:31:16 +0200 | [diff] [blame] | 21 | _striptags_re = re.compile(r'(<!--.*?-->|<[^>]*>)') |
Armin Ronacher | 9bcd411 | 2007-05-29 14:17:24 +0200 | [diff] [blame] | 22 | |
| 23 | |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 24 | def contextfilter(f): |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 25 | """ |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 26 | Decorator for marking context dependent filters. The current context |
| 27 | argument will be passed as first argument. |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 28 | """ |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 29 | f.contextfilter = True |
| 30 | return f |
Armin Ronacher | 9bcd411 | 2007-05-29 14:17:24 +0200 | [diff] [blame] | 31 | |
| 32 | |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 33 | def do_replace(s, old, new, count=None): |
| 34 | """ |
Armin Ronacher | 37a8851 | 2007-03-02 20:42:18 +0100 | [diff] [blame] | 35 | Return a copy of the value with all occurrences of a substring |
| 36 | replaced with a new one. The first argument is the substring |
| 37 | that should be replaced, the second is the replacement string. |
| 38 | If the optional third argument ``count`` is given, only the first |
| 39 | ``count`` occurrences are replaced: |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 40 | |
Armin Ronacher | 37a8851 | 2007-03-02 20:42:18 +0100 | [diff] [blame] | 41 | .. sourcecode:: jinja |
| 42 | |
| 43 | {{ "Hello World"|replace("Hello", "Goodbye") }} |
| 44 | -> Goodbye World |
| 45 | |
| 46 | {{ "aaaaargh"|replace("a", "d'oh, ", 2) }} |
| 47 | -> d'oh, d'oh, aaargh |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 48 | """ |
Armin Ronacher | 2b76513 | 2007-03-13 16:48:10 +0100 | [diff] [blame] | 49 | if not isinstance(old, basestring) or \ |
| 50 | not isinstance(new, basestring): |
Armin Ronacher | ae16fd0 | 2007-03-27 21:31:24 +0200 | [diff] [blame] | 51 | raise FilterArgumentError('the replace filter requires ' |
| 52 | 'string replacement arguments') |
Armin Ronacher | 2da479f | 2007-04-02 10:50:18 +0200 | [diff] [blame] | 53 | if count is None: |
| 54 | return s.replace(old, new) |
| 55 | if not isinstance(count, (int, long)): |
Armin Ronacher | ae16fd0 | 2007-03-27 21:31:24 +0200 | [diff] [blame] | 56 | raise FilterArgumentError('the count parameter of the ' |
| 57 | 'replace filter requires ' |
| 58 | 'an integer') |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 59 | return s.replace(old, new, count) |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 60 | |
| 61 | |
| 62 | def do_upper(s): |
| 63 | """ |
Armin Ronacher | 37a8851 | 2007-03-02 20:42:18 +0100 | [diff] [blame] | 64 | Convert a value to uppercase. |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 65 | """ |
| 66 | return s.upper() |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 67 | |
| 68 | |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 69 | def do_lower(s): |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 70 | """ |
Armin Ronacher | 37a8851 | 2007-03-02 20:42:18 +0100 | [diff] [blame] | 71 | Convert a value to lowercase. |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 72 | """ |
| 73 | return s.lower() |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 74 | |
| 75 | |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 76 | def do_escape(s, attribute=False): |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 77 | """ |
Armin Ronacher | 37a8851 | 2007-03-02 20:42:18 +0100 | [diff] [blame] | 78 | XML escape ``&``, ``<``, and ``>`` in a string of data. If the |
| 79 | optional parameter is `true` this filter will also convert |
| 80 | ``"`` to ``"``. This filter is just used if the environment |
| 81 | was configured with disabled `auto_escape`. |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 82 | |
Armin Ronacher | 37a8851 | 2007-03-02 20:42:18 +0100 | [diff] [blame] | 83 | This method will have no effect it the value is already escaped. |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 84 | """ |
Christoph Hack | f4fdc72 | 2008-04-08 16:48:30 +0200 | [diff] [blame] | 85 | # XXX: Does this still exists? |
| 86 | #if isinstance(s, TemplateData): |
| 87 | # return s |
| 88 | if hasattr(s, '__html__'): |
| 89 | return s.__html__() |
| 90 | return escape(unicode(s), attribute) |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 91 | |
| 92 | |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 93 | def do_xmlattr(d, autospace=False): |
Armin Ronacher | 450756b | 2007-04-15 15:13:59 +0200 | [diff] [blame] | 94 | """ |
| 95 | Create an SGML/XML attribute string based on the items in a dict. |
| 96 | All values that are neither `none` nor `undefined` are automatically |
| 97 | escaped: |
| 98 | |
Armin Ronacher | 8ca55df | 2007-04-15 15:16:08 +0200 | [diff] [blame] | 99 | .. sourcecode:: html+jinja |
Armin Ronacher | 450756b | 2007-04-15 15:13:59 +0200 | [diff] [blame] | 100 | |
Armin Ronacher | c7ddd1d | 2007-04-28 15:56:27 +0200 | [diff] [blame] | 101 | <ul{{ {'class': 'my_list', 'missing': None, |
Armin Ronacher | d459e27 | 2007-04-15 15:31:05 +0200 | [diff] [blame] | 102 | 'id': 'list-%d'|format(variable)}|xmlattr }}> |
Armin Ronacher | 450756b | 2007-04-15 15:13:59 +0200 | [diff] [blame] | 103 | ... |
| 104 | </ul> |
| 105 | |
| 106 | Results in something like this: |
| 107 | |
Armin Ronacher | 8ca55df | 2007-04-15 15:16:08 +0200 | [diff] [blame] | 108 | .. sourcecode:: html |
| 109 | |
Armin Ronacher | 450756b | 2007-04-15 15:13:59 +0200 | [diff] [blame] | 110 | <ul class="my_list" id="list-42"> |
| 111 | ... |
| 112 | </ul> |
| 113 | |
Armin Ronacher | 9bcd411 | 2007-05-29 14:17:24 +0200 | [diff] [blame] | 114 | As you can see it automatically prepends a space in front of the item |
Armin Ronacher | c7ddd1d | 2007-04-28 15:56:27 +0200 | [diff] [blame] | 115 | if the filter returned something. You can disable this by passing |
| 116 | `false` as only argument to the filter. |
| 117 | |
Armin Ronacher | 450756b | 2007-04-15 15:13:59 +0200 | [diff] [blame] | 118 | *New in Jinja 1.1* |
| 119 | """ |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 120 | if not hasattr(d, 'iteritems'): |
| 121 | raise TypeError('a dict is required') |
| 122 | result = [] |
| 123 | for key, value in d.iteritems(): |
| 124 | if value not in (None, env.undefined_singleton): |
| 125 | result.append(u'%s="%s"' % ( |
| 126 | escape(env.to_unicode(key)), |
| 127 | escape(env.to_unicode(value), True) |
| 128 | )) |
| 129 | rv = u' '.join(result) |
| 130 | if autospace: |
| 131 | rv = ' ' + rv |
| 132 | return rv |
Armin Ronacher | 450756b | 2007-04-15 15:13:59 +0200 | [diff] [blame] | 133 | |
| 134 | |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 135 | def do_capitalize(s): |
| 136 | """ |
Armin Ronacher | 37a8851 | 2007-03-02 20:42:18 +0100 | [diff] [blame] | 137 | Capitalize a value. The first character will be uppercase, all others |
| 138 | lowercase. |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 139 | """ |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 140 | return unicode(s).capitalize() |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 141 | |
| 142 | |
| 143 | def do_title(s): |
| 144 | """ |
Armin Ronacher | 37a8851 | 2007-03-02 20:42:18 +0100 | [diff] [blame] | 145 | Return a titlecased version of the value. I.e. words will start with |
| 146 | uppercase letters, all remaining characters are lowercase. |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 147 | """ |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 148 | return unicode(s).title() |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 149 | |
| 150 | |
Armin Ronacher | 2b76513 | 2007-03-13 16:48:10 +0100 | [diff] [blame] | 151 | def do_dictsort(case_sensitive=False, by='key'): |
| 152 | """ |
| 153 | Sort a dict and yield (key, value) pairs. Because python dicts are |
| 154 | unsorted you may want to use this function to order them by either |
| 155 | key or value: |
| 156 | |
| 157 | .. sourcecode:: jinja |
| 158 | |
| 159 | {% for item in mydict|dictsort %} |
| 160 | sort the dict by key, case insensitive |
| 161 | |
| 162 | {% for item in mydict|dicsort(true) %} |
| 163 | sort the dict by key, case sensitive |
| 164 | |
| 165 | {% for item in mydict|dictsort(false, 'value') %} |
| 166 | sort the dict by key, case insensitive, sorted |
| 167 | normally and ordered by value. |
| 168 | """ |
| 169 | if by == 'key': |
| 170 | pos = 0 |
| 171 | elif by == 'value': |
| 172 | pos = 1 |
| 173 | else: |
| 174 | raise FilterArgumentError('You can only sort by either ' |
| 175 | '"key" or "value"') |
| 176 | def sort_func(value, env): |
| 177 | if isinstance(value, basestring): |
| 178 | value = env.to_unicode(value) |
| 179 | if not case_sensitive: |
| 180 | value = value.lower() |
| 181 | return value |
| 182 | |
| 183 | def wrapped(env, context, value): |
| 184 | items = value.items() |
| 185 | items.sort(lambda a, b: cmp(sort_func(a[pos], env), |
| 186 | sort_func(b[pos], env))) |
| 187 | return items |
| 188 | return wrapped |
| 189 | |
| 190 | |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 191 | def do_default(value, default_value=u'', boolean=False): |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 192 | """ |
Armin Ronacher | 37a8851 | 2007-03-02 20:42:18 +0100 | [diff] [blame] | 193 | If the value is undefined it will return the passed default value, |
| 194 | otherwise the value of the variable: |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 195 | |
Armin Ronacher | 37a8851 | 2007-03-02 20:42:18 +0100 | [diff] [blame] | 196 | .. sourcecode:: jinja |
| 197 | |
| 198 | {{ my_variable|default('my_variable is not defined') }} |
| 199 | |
| 200 | This will output the value of ``my_variable`` if the variable was |
| 201 | defined, otherwise ``'my_variable is not defined'``. If you want |
| 202 | to use default with variables that evaluate to false you have to |
| 203 | set the second parameter to `true`: |
| 204 | |
| 205 | .. sourcecode:: jinja |
| 206 | |
| 207 | {{ ''|default('the string was empty', true) }} |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 208 | """ |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 209 | # XXX: undefined_sigleton |
| 210 | if (boolean and not value) or value in (env.undefined_singleton, None): |
| 211 | return default_value |
| 212 | return value |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 213 | |
| 214 | |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 215 | def do_join(value, d=u''): |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 216 | """ |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 217 | Return a string which is the concatenation of the strings in the |
Armin Ronacher | 37a8851 | 2007-03-02 20:42:18 +0100 | [diff] [blame] | 218 | sequence. The separator between elements is an empty string per |
| 219 | default, you can define ith with the optional parameter: |
| 220 | |
| 221 | .. sourcecode:: jinja |
| 222 | |
| 223 | {{ [1, 2, 3]|join('|') }} |
| 224 | -> 1|2|3 |
| 225 | |
| 226 | {{ [1, 2, 3]|join }} |
| 227 | -> 123 |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 228 | """ |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 229 | return unicode(d).join([unicode(x) for x in value]) |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 230 | |
| 231 | |
| 232 | def do_count(): |
| 233 | """ |
Armin Ronacher | 37a8851 | 2007-03-02 20:42:18 +0100 | [diff] [blame] | 234 | Return the length of the value. In case if getting an integer or float |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 235 | it will convert it into a string an return the length of the new |
Armin Ronacher | 37a8851 | 2007-03-02 20:42:18 +0100 | [diff] [blame] | 236 | string. If the object has no length it will of corse return 0. |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 237 | """ |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 238 | try: |
| 239 | if type(value) in (int, float, long): |
| 240 | return len(str(value)) |
| 241 | return len(value) |
| 242 | except TypeError: |
| 243 | return 0 |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 244 | |
| 245 | |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 246 | def do_reverse(l): |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 247 | """ |
Armin Ronacher | 37a8851 | 2007-03-02 20:42:18 +0100 | [diff] [blame] | 248 | Return a reversed list of the sequence filtered. You can use this |
| 249 | for example for reverse iteration: |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 250 | |
Armin Ronacher | 37a8851 | 2007-03-02 20:42:18 +0100 | [diff] [blame] | 251 | .. sourcecode:: jinja |
| 252 | |
Armin Ronacher | dbc945d | 2007-03-05 18:03:32 +0100 | [diff] [blame] | 253 | {% for item in seq|reverse %} |
Armin Ronacher | 37a8851 | 2007-03-02 20:42:18 +0100 | [diff] [blame] | 254 | {{ item|e }} |
| 255 | {% endfor %} |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 256 | """ |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 257 | try: |
| 258 | return value[::-1] |
| 259 | except: |
| 260 | l = list(value) |
| 261 | l.reverse() |
| 262 | return l |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 263 | |
| 264 | |
Armin Ronacher | fed86c1 | 2007-02-27 10:31:14 +0100 | [diff] [blame] | 265 | def do_center(value, width=80): |
| 266 | """ |
Armin Ronacher | fed86c1 | 2007-02-27 10:31:14 +0100 | [diff] [blame] | 267 | Centers the value in a field of a given width. |
| 268 | """ |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 269 | return unicode(value).center(width) |
Armin Ronacher | fed86c1 | 2007-02-27 10:31:14 +0100 | [diff] [blame] | 270 | |
| 271 | |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 272 | def do_first(seq): |
Armin Ronacher | fed86c1 | 2007-02-27 10:31:14 +0100 | [diff] [blame] | 273 | """ |
Armin Ronacher | 37a8851 | 2007-03-02 20:42:18 +0100 | [diff] [blame] | 274 | Return the frist item of a sequence. |
Armin Ronacher | fed86c1 | 2007-02-27 10:31:14 +0100 | [diff] [blame] | 275 | """ |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 276 | try: |
| 277 | return iter(seq).next() |
| 278 | except StopIteration: |
| 279 | return env.undefined_singleton |
Armin Ronacher | fed86c1 | 2007-02-27 10:31:14 +0100 | [diff] [blame] | 280 | |
| 281 | |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 282 | def do_last(seq): |
Armin Ronacher | fed86c1 | 2007-02-27 10:31:14 +0100 | [diff] [blame] | 283 | """ |
Armin Ronacher | fed86c1 | 2007-02-27 10:31:14 +0100 | [diff] [blame] | 284 | Return the last item of a sequence. |
| 285 | """ |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 286 | try: |
| 287 | return iter(reversed(seq)).next() |
| 288 | except StopIteration: |
| 289 | return env.undefined_singleton |
Armin Ronacher | fed86c1 | 2007-02-27 10:31:14 +0100 | [diff] [blame] | 290 | |
| 291 | |
| 292 | def do_random(): |
| 293 | """ |
Armin Ronacher | fed86c1 | 2007-02-27 10:31:14 +0100 | [diff] [blame] | 294 | Return a random item from the sequence. |
| 295 | """ |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 296 | try: |
| 297 | return choice(seq) |
| 298 | except IndexError: |
| 299 | return env.undefined_singleton |
Armin Ronacher | fed86c1 | 2007-02-27 10:31:14 +0100 | [diff] [blame] | 300 | |
| 301 | |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 302 | def do_urlencode(value): |
Armin Ronacher | fed86c1 | 2007-02-27 10:31:14 +0100 | [diff] [blame] | 303 | """ |
Armin Ronacher | fed86c1 | 2007-02-27 10:31:14 +0100 | [diff] [blame] | 304 | urlencode a string or directory. |
Armin Ronacher | 37a8851 | 2007-03-02 20:42:18 +0100 | [diff] [blame] | 305 | |
| 306 | .. sourcecode:: jinja |
| 307 | |
| 308 | {{ {'foo': 'bar', 'blub': 'blah'}|urlencode }} |
| 309 | -> foo=bar&blub=blah |
| 310 | |
| 311 | {{ 'Hello World' }} |
| 312 | -> Hello%20World |
Armin Ronacher | fed86c1 | 2007-02-27 10:31:14 +0100 | [diff] [blame] | 313 | """ |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 314 | if isinstance(value, dict): |
| 315 | tmp = {} |
| 316 | for key, value in value.iteritems(): |
| 317 | # XXX env.charset? |
| 318 | key = unicode(key).encode(env.charset) |
| 319 | value = unicode(value).encode(env.charset) |
| 320 | tmp[key] = value |
| 321 | return urlencode(tmp) |
| 322 | else: |
| 323 | # XXX: env.charset? |
| 324 | return quote(unicode(value).encode(env.charset)) |
Armin Ronacher | fed86c1 | 2007-02-27 10:31:14 +0100 | [diff] [blame] | 325 | |
| 326 | |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 327 | def do_jsonencode(value): |
Armin Ronacher | fed86c1 | 2007-02-27 10:31:14 +0100 | [diff] [blame] | 328 | """ |
Armin Ronacher | fed86c1 | 2007-02-27 10:31:14 +0100 | [diff] [blame] | 329 | JSON dump a variable. just works if simplejson is installed. |
Armin Ronacher | 37a8851 | 2007-03-02 20:42:18 +0100 | [diff] [blame] | 330 | |
| 331 | .. sourcecode:: jinja |
| 332 | |
| 333 | {{ 'Hello World'|jsonencode }} |
| 334 | -> "Hello World" |
Armin Ronacher | fed86c1 | 2007-02-27 10:31:14 +0100 | [diff] [blame] | 335 | """ |
| 336 | global simplejson |
| 337 | try: |
| 338 | simplejson |
| 339 | except NameError: |
| 340 | import simplejson |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 341 | return simplejson.dumps(value) |
Armin Ronacher | fed86c1 | 2007-02-27 10:31:14 +0100 | [diff] [blame] | 342 | |
| 343 | |
Armin Ronacher | 2b76513 | 2007-03-13 16:48:10 +0100 | [diff] [blame] | 344 | def do_filesizeformat(): |
| 345 | """ |
| 346 | Format the value like a 'human-readable' file size (i.e. 13 KB, 4.1 MB, 102 |
| 347 | bytes, etc). |
| 348 | """ |
| 349 | def wrapped(env, context, value): |
| 350 | # fail silently |
| 351 | try: |
| 352 | bytes = float(value) |
| 353 | except TypeError: |
| 354 | bytes = 0 |
| 355 | |
| 356 | if bytes < 1024: |
| 357 | return "%d Byte%s" % (bytes, bytes != 1 and 's' or '') |
| 358 | elif bytes < 1024 * 1024: |
| 359 | return "%.1f KB" % (bytes / 1024) |
| 360 | elif bytes < 1024 * 1024 * 1024: |
| 361 | return "%.1f MB" % (bytes / (1024 * 1024)) |
| 362 | return "%.1f GB" % (bytes / (1024 * 1024 * 1024)) |
| 363 | return wrapped |
| 364 | |
| 365 | |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 366 | def do_pprint(value, verbose=False): |
Armin Ronacher | 2b76513 | 2007-03-13 16:48:10 +0100 | [diff] [blame] | 367 | """ |
| 368 | Pretty print a variable. Useful for debugging. |
Armin Ronacher | f2ce126 | 2007-10-21 21:51:51 +0200 | [diff] [blame] | 369 | |
| 370 | With Jinja 1.2 onwards you can pass it a parameter. If this parameter |
Armin Ronacher | 5f3f136 | 2007-10-21 22:15:04 +0200 | [diff] [blame] | 371 | is truthy the output will be more verbose (this requires `pretty`) |
Armin Ronacher | 2b76513 | 2007-03-13 16:48:10 +0100 | [diff] [blame] | 372 | """ |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 373 | return pformat(value, verbose=verbose) |
Armin Ronacher | 2b76513 | 2007-03-13 16:48:10 +0100 | [diff] [blame] | 374 | |
| 375 | |
| 376 | def do_urlize(value, trim_url_limit=None, nofollow=False): |
| 377 | """ |
| 378 | Converts URLs in plain text into clickable links. |
| 379 | |
| 380 | If you pass the filter an additional integer it will shorten the urls |
| 381 | to that number. Also a third argument exists that makes the urls |
| 382 | "nofollow": |
| 383 | |
| 384 | .. sourcecode:: jinja |
| 385 | |
| 386 | {{ mytext|urlize(40, True) }} |
| 387 | links are shortened to 40 chars and defined with rel="nofollow" |
| 388 | """ |
Christoph Hack | 2751d94 | 2008-04-09 12:14:55 +0200 | [diff] [blame^] | 389 | return urlize(unicode(value), trim_url_limit, nofollow) |
Armin Ronacher | 2b76513 | 2007-03-13 16:48:10 +0100 | [diff] [blame] | 390 | |
| 391 | |
| 392 | def do_indent(s, width=4, indentfirst=False): |
| 393 | """ |
| 394 | {{ s|indent[ width[ indentfirst[ usetab]]] }} |
| 395 | |
| 396 | Return a copy of the passed string, each line indented by |
| 397 | 4 spaces. The first line is not indented. If you want to |
| 398 | change the number of spaces or indent the first line too |
| 399 | you can pass additional parameters to the filter: |
| 400 | |
| 401 | .. sourcecode:: jinja |
| 402 | |
| 403 | {{ mytext|indent(2, True) }} |
| 404 | indent by two spaces and indent the first line too. |
| 405 | """ |
| 406 | indention = ' ' * width |
| 407 | if indentfirst: |
| 408 | return u'\n'.join([indention + line for line in s.splitlines()]) |
| 409 | return s.replace('\n', '\n' + indention) |
Armin Ronacher | 2b76513 | 2007-03-13 16:48:10 +0100 | [diff] [blame] | 410 | |
| 411 | |
| 412 | def do_truncate(s, length=255, killwords=False, end='...'): |
| 413 | """ |
Armin Ronacher | 2b76513 | 2007-03-13 16:48:10 +0100 | [diff] [blame] | 414 | Return a truncated copy of the string. The length is specified |
| 415 | with the first parameter which defaults to ``255``. If the second |
| 416 | parameter is ``true`` the filter will cut the text at length. Otherwise |
| 417 | it will try to save the last word. If the text was in fact |
| 418 | truncated it will append an ellipsis sign (``"..."``). If you want a |
| 419 | different ellipsis sign than ``"..."`` you can specify it using the |
| 420 | third parameter. |
| 421 | |
| 422 | .. sourcecode jinja:: |
| 423 | |
| 424 | {{ mytext|truncate(300, false, '»') }} |
| 425 | truncate mytext to 300 chars, don't split up words, use a |
| 426 | right pointing double arrow as ellipsis sign. |
| 427 | """ |
| 428 | if len(s) <= length: |
| 429 | return s |
| 430 | elif killwords: |
| 431 | return s[:length] + end |
| 432 | words = s.split(' ') |
| 433 | result = [] |
| 434 | m = 0 |
| 435 | for word in words: |
| 436 | m += len(word) + 1 |
| 437 | if m > length: |
| 438 | break |
| 439 | result.append(word) |
| 440 | result.append(end) |
| 441 | return u' '.join(result) |
Armin Ronacher | 2b76513 | 2007-03-13 16:48:10 +0100 | [diff] [blame] | 442 | |
| 443 | |
| 444 | def do_wordwrap(s, pos=79, hard=False): |
| 445 | """ |
| 446 | Return a copy of the string passed to the filter wrapped after |
| 447 | ``79`` characters. You can override this default using the first |
| 448 | parameter. If you set the second parameter to `true` Jinja will |
| 449 | also split words apart (usually a bad idea because it makes |
| 450 | reading hard). |
| 451 | """ |
| 452 | if len(s) < pos: |
| 453 | return s |
| 454 | if hard: |
| 455 | return u'\n'.join([s[idx:idx + pos] for idx in |
| 456 | xrange(0, len(s), pos)]) |
| 457 | # code from http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/148061 |
| 458 | return reduce(lambda line, word, pos=pos: u'%s%s%s' % |
| 459 | (line, u' \n'[(len(line)-line.rfind('\n') - 1 + |
| 460 | len(word.split('\n', 1)[0]) >= pos)], |
| 461 | word), s.split(' ')) |
Armin Ronacher | 2b76513 | 2007-03-13 16:48:10 +0100 | [diff] [blame] | 462 | |
| 463 | |
| 464 | def do_wordcount(s): |
| 465 | """ |
| 466 | Count the words in that string. |
| 467 | """ |
| 468 | return len([x for x in s.split() if x]) |
Armin Ronacher | 2b76513 | 2007-03-13 16:48:10 +0100 | [diff] [blame] | 469 | |
| 470 | |
| 471 | def do_textile(s): |
| 472 | """ |
| 473 | Prase the string using textile. |
| 474 | |
| 475 | requires the `PyTextile`_ library. |
| 476 | |
| 477 | .. _PyTextile: http://dealmeida.net/projects/textile/ |
| 478 | """ |
| 479 | from textile import textile |
Armin Ronacher | 8712dad | 2007-06-08 01:07:48 +0200 | [diff] [blame] | 480 | return textile(s.encode('utf-8')).decode('utf-8') |
Armin Ronacher | 2b76513 | 2007-03-13 16:48:10 +0100 | [diff] [blame] | 481 | |
| 482 | |
| 483 | def do_markdown(s): |
| 484 | """ |
| 485 | Parse the string using markdown. |
| 486 | |
| 487 | requires the `Python-markdown`_ library. |
| 488 | |
| 489 | .. _Python-markdown: http://www.freewisdom.org/projects/python-markdown/ |
| 490 | """ |
| 491 | from markdown import markdown |
Armin Ronacher | 8712dad | 2007-06-08 01:07:48 +0200 | [diff] [blame] | 492 | return markdown(s.encode('utf-8')).decode('utf-8') |
Armin Ronacher | 2b76513 | 2007-03-13 16:48:10 +0100 | [diff] [blame] | 493 | |
| 494 | |
| 495 | def do_rst(s): |
| 496 | """ |
| 497 | Parse the string using the reStructuredText parser from the |
| 498 | docutils package. |
| 499 | |
| 500 | requires `docutils`_. |
| 501 | |
Georg Brandl | fde3ff2 | 2007-07-18 09:27:01 +0200 | [diff] [blame] | 502 | .. _docutils: http://docutils.sourceforge.net/ |
Armin Ronacher | 2b76513 | 2007-03-13 16:48:10 +0100 | [diff] [blame] | 503 | """ |
Armin Ronacher | 8712dad | 2007-06-08 01:07:48 +0200 | [diff] [blame] | 504 | from docutils.core import publish_parts |
| 505 | parts = publish_parts(source=s, writer_name='html4css1') |
| 506 | return parts['fragment'] |
Armin Ronacher | 2b76513 | 2007-03-13 16:48:10 +0100 | [diff] [blame] | 507 | |
Armin Ronacher | ab45b84 | 2007-03-18 20:47:50 +0100 | [diff] [blame] | 508 | def do_int(default=0): |
Armin Ronacher | 2b76513 | 2007-03-13 16:48:10 +0100 | [diff] [blame] | 509 | """ |
Armin Ronacher | ab45b84 | 2007-03-18 20:47:50 +0100 | [diff] [blame] | 510 | Convert the value into an integer. If the |
| 511 | conversion doesn't work it will return ``0``. You can |
| 512 | override this default using the first parameter. |
Armin Ronacher | 2b76513 | 2007-03-13 16:48:10 +0100 | [diff] [blame] | 513 | """ |
| 514 | def wrapped(env, context, value): |
Armin Ronacher | ab45b84 | 2007-03-18 20:47:50 +0100 | [diff] [blame] | 515 | try: |
| 516 | return int(value) |
| 517 | except (TypeError, ValueError): |
| 518 | try: |
| 519 | return int(float(value)) |
| 520 | except (TypeError, ValueError): |
| 521 | return default |
Armin Ronacher | 2b76513 | 2007-03-13 16:48:10 +0100 | [diff] [blame] | 522 | return wrapped |
| 523 | |
| 524 | |
Armin Ronacher | ab45b84 | 2007-03-18 20:47:50 +0100 | [diff] [blame] | 525 | def do_float(default=0.0): |
Armin Ronacher | 2b76513 | 2007-03-13 16:48:10 +0100 | [diff] [blame] | 526 | """ |
Armin Ronacher | ab45b84 | 2007-03-18 20:47:50 +0100 | [diff] [blame] | 527 | Convert the value into a floating point number. If the |
| 528 | conversion doesn't work it will return ``0.0``. You can |
| 529 | override this default using the first parameter. |
Armin Ronacher | 2b76513 | 2007-03-13 16:48:10 +0100 | [diff] [blame] | 530 | """ |
| 531 | def wrapped(env, context, value): |
Armin Ronacher | ab45b84 | 2007-03-18 20:47:50 +0100 | [diff] [blame] | 532 | try: |
| 533 | return float(value) |
| 534 | except (TypeError, ValueError): |
| 535 | return default |
Armin Ronacher | 2b76513 | 2007-03-13 16:48:10 +0100 | [diff] [blame] | 536 | return wrapped |
| 537 | |
| 538 | |
| 539 | def do_string(): |
| 540 | """ |
| 541 | Convert the value into an string. |
| 542 | """ |
| 543 | return lambda e, c, v: e.to_unicode(v) |
| 544 | |
| 545 | |
Armin Ronacher | f0f4deb | 2007-03-18 23:10:15 +0100 | [diff] [blame] | 546 | def do_format(*args): |
| 547 | """ |
| 548 | Apply python string formatting on an object: |
| 549 | |
| 550 | .. sourcecode:: jinja |
| 551 | |
| 552 | {{ "%s - %s"|format("Hello?", "Foo!") }} |
| 553 | -> Hello? - Foo! |
| 554 | |
| 555 | Note that you cannot use the mapping syntax (``%(name)s``) |
Armin Ronacher | 4965987 | 2007-05-12 23:29:33 +0200 | [diff] [blame] | 556 | like in python. Use `|dformat` for that. |
Armin Ronacher | f0f4deb | 2007-03-18 23:10:15 +0100 | [diff] [blame] | 557 | """ |
| 558 | def wrapped(env, context, value): |
| 559 | return env.to_unicode(value) % args |
| 560 | return wrapped |
| 561 | |
| 562 | |
Armin Ronacher | 4965987 | 2007-05-12 23:29:33 +0200 | [diff] [blame] | 563 | def do_dformat(d): |
| 564 | """ |
| 565 | Apply python mapping string formatting on an object: |
| 566 | |
| 567 | .. sourcecode:: jinja |
| 568 | |
| 569 | {{ "Hello %(username)s!"|dformat({'username': 'John Doe'}) }} |
| 570 | -> Hello John Doe! |
| 571 | |
| 572 | This is useful when adding variables to translateable |
| 573 | string expressions. |
| 574 | |
| 575 | *New in Jinja 1.1* |
| 576 | """ |
| 577 | if not isinstance(d, dict): |
| 578 | raise FilterArgumentError('dict required') |
| 579 | def wrapped(env, context, value): |
| 580 | return env.to_unicode(value) % d |
| 581 | return wrapped |
| 582 | |
| 583 | |
Armin Ronacher | 566295e | 2007-03-19 13:19:34 +0100 | [diff] [blame] | 584 | def do_trim(value): |
| 585 | """ |
| 586 | Strip leading and trailing whitespace. |
| 587 | """ |
| 588 | return value.strip() |
Armin Ronacher | 566295e | 2007-03-19 13:19:34 +0100 | [diff] [blame] | 589 | |
| 590 | |
| 591 | def do_capture(name='captured', clean=False): |
Armin Ronacher | f0f4deb | 2007-03-18 23:10:15 +0100 | [diff] [blame] | 592 | """ |
| 593 | Store the value in a variable called ``captured`` or a variable |
| 594 | with the name provided. Useful for filter blocks: |
| 595 | |
| 596 | .. sourcecode:: jinja |
| 597 | |
| 598 | {% filter capture('foo') %} |
Armin Ronacher | 566295e | 2007-03-19 13:19:34 +0100 | [diff] [blame] | 599 | ... |
| 600 | {% endfilter %} |
| 601 | {{ foo }} |
| 602 | |
| 603 | This will output "..." two times. One time from the filter block |
| 604 | and one time from the variable. If you don't want the filter to |
| 605 | output something you can use it in `clean` mode: |
| 606 | |
| 607 | .. sourcecode:: jinja |
| 608 | |
| 609 | {% filter capture('foo', True) %} |
| 610 | ... |
Armin Ronacher | f0f4deb | 2007-03-18 23:10:15 +0100 | [diff] [blame] | 611 | {% endfilter %} |
| 612 | {{ foo }} |
| 613 | """ |
Armin Ronacher | 954153b | 2007-04-01 12:07:21 +0200 | [diff] [blame] | 614 | if not isinstance(name, basestring): |
Armin Ronacher | 566295e | 2007-03-19 13:19:34 +0100 | [diff] [blame] | 615 | raise FilterArgumentError('You can only capture into variables') |
Armin Ronacher | 0b66657 | 2007-03-18 23:15:23 +0100 | [diff] [blame] | 616 | def wrapped(env, context, value): |
| 617 | context[name] = value |
Armin Ronacher | 566295e | 2007-03-19 13:19:34 +0100 | [diff] [blame] | 618 | if clean: |
Armin Ronacher | fb5bebc | 2007-04-27 18:24:19 +0200 | [diff] [blame] | 619 | return TemplateData() |
Armin Ronacher | 0b66657 | 2007-03-18 23:15:23 +0100 | [diff] [blame] | 620 | return value |
| 621 | return wrapped |
Armin Ronacher | f0f4deb | 2007-03-18 23:10:15 +0100 | [diff] [blame] | 622 | |
| 623 | |
Armin Ronacher | 9bcd411 | 2007-05-29 14:17:24 +0200 | [diff] [blame] | 624 | def do_striptags(value): |
Georg Brandl | af31e4d | 2007-04-15 00:47:37 +0200 | [diff] [blame] | 625 | """ |
| 626 | Strip SGML/XML tags and replace adjacent whitespace by one space. |
Armin Ronacher | 2158091 | 2007-04-17 17:13:10 +0200 | [diff] [blame] | 627 | |
Georg Brandl | af31e4d | 2007-04-15 00:47:37 +0200 | [diff] [blame] | 628 | *new in Jinja 1.1* |
| 629 | """ |
Armin Ronacher | 9bcd411 | 2007-05-29 14:17:24 +0200 | [diff] [blame] | 630 | return ' '.join(_striptags_re.sub('', value).split()) |
Georg Brandl | af31e4d | 2007-04-15 00:47:37 +0200 | [diff] [blame] | 631 | |
| 632 | |
Armin Ronacher | d071f95 | 2007-04-13 22:32:11 +0200 | [diff] [blame] | 633 | def do_slice(slices, fill_with=None): |
| 634 | """ |
| 635 | Slice an iterator and return a list of lists containing |
| 636 | those items. Useful if you want to create a div containing |
| 637 | three div tags that represent columns: |
| 638 | |
Armin Ronacher | 8937607 | 2007-04-13 22:34:35 +0200 | [diff] [blame] | 639 | .. sourcecode:: html+jinja |
Armin Ronacher | d071f95 | 2007-04-13 22:32:11 +0200 | [diff] [blame] | 640 | |
| 641 | <div class="columwrapper"> |
| 642 | {%- for column in items|slice(3) %} |
| 643 | <ul class="column-{{ loop.index }}"> |
| 644 | {%- for item in column %} |
| 645 | <li>{{ item }}</li> |
| 646 | {%- endfor %} |
| 647 | </ul> |
| 648 | {%- endfor %} |
| 649 | </div> |
| 650 | |
Armin Ronacher | eec3138 | 2007-04-14 14:50:45 +0200 | [diff] [blame] | 651 | If you pass it a second argument it's used to fill missing |
| 652 | values on the last iteration. |
| 653 | |
| 654 | *new in Jinja 1.1* |
Armin Ronacher | d071f95 | 2007-04-13 22:32:11 +0200 | [diff] [blame] | 655 | """ |
| 656 | def wrapped(env, context, value): |
| 657 | result = [] |
| 658 | seq = list(value) |
| 659 | length = len(seq) |
| 660 | items_per_slice = length // slices |
| 661 | slices_with_extra = length % slices |
| 662 | offset = 0 |
| 663 | for slice_number in xrange(slices): |
| 664 | start = offset + slice_number * items_per_slice |
| 665 | if slice_number < slices_with_extra: |
| 666 | offset += 1 |
| 667 | end = offset + (slice_number + 1) * items_per_slice |
| 668 | tmp = seq[start:end] |
| 669 | if fill_with is not None and slice_number >= slices_with_extra: |
| 670 | tmp.append(fill_with) |
| 671 | result.append(tmp) |
| 672 | return result |
| 673 | return wrapped |
| 674 | |
| 675 | |
| 676 | def do_batch(linecount, fill_with=None): |
| 677 | """ |
| 678 | A filter that batches items. It works pretty much like `slice` |
| 679 | just the other way round. It returns a list of lists with the |
| 680 | given number of items. If you provide a second parameter this |
| 681 | is used to fill missing items. See this example: |
| 682 | |
Armin Ronacher | 8937607 | 2007-04-13 22:34:35 +0200 | [diff] [blame] | 683 | .. sourcecode:: html+jinja |
Armin Ronacher | d071f95 | 2007-04-13 22:32:11 +0200 | [diff] [blame] | 684 | |
| 685 | <table> |
| 686 | {%- for row in items|batch(3, ' ') %} |
| 687 | <tr> |
| 688 | {%- for column in row %} |
| 689 | <tr>{{ column }}</td> |
| 690 | {%- endfor %} |
| 691 | </tr> |
| 692 | {%- endfor %} |
| 693 | </table> |
| 694 | |
Armin Ronacher | eec3138 | 2007-04-14 14:50:45 +0200 | [diff] [blame] | 695 | *new in Jinja 1.1* |
Armin Ronacher | d071f95 | 2007-04-13 22:32:11 +0200 | [diff] [blame] | 696 | """ |
| 697 | def wrapped(env, context, value): |
| 698 | result = [] |
| 699 | tmp = [] |
| 700 | for item in value: |
| 701 | if len(tmp) == linecount: |
| 702 | result.append(tmp) |
| 703 | tmp = [] |
| 704 | tmp.append(item) |
| 705 | if tmp: |
| 706 | if fill_with is not None and len(tmp) < linecount: |
| 707 | tmp += [fill_with] * (linecount - len(tmp)) |
| 708 | result.append(tmp) |
| 709 | return result |
| 710 | return wrapped |
| 711 | |
| 712 | |
Armin Ronacher | eec3138 | 2007-04-14 14:50:45 +0200 | [diff] [blame] | 713 | def do_sum(): |
| 714 | """ |
| 715 | Sum up the given sequence of numbers. |
Armin Ronacher | a38b312 | 2007-04-15 00:49:13 +0200 | [diff] [blame] | 716 | |
| 717 | *new in Jinja 1.1* |
Armin Ronacher | eec3138 | 2007-04-14 14:50:45 +0200 | [diff] [blame] | 718 | """ |
| 719 | def wrapped(env, context, value): |
| 720 | return sum(value) |
| 721 | return wrapped |
| 722 | |
| 723 | |
| 724 | def do_abs(): |
| 725 | """ |
| 726 | Return the absolute value of a number. |
Armin Ronacher | a38b312 | 2007-04-15 00:49:13 +0200 | [diff] [blame] | 727 | |
| 728 | *new in Jinja 1.1* |
Armin Ronacher | eec3138 | 2007-04-14 14:50:45 +0200 | [diff] [blame] | 729 | """ |
| 730 | def wrapped(env, context, value): |
| 731 | return abs(value) |
| 732 | return wrapped |
| 733 | |
| 734 | |
| 735 | def do_round(precision=0, method='common'): |
| 736 | """ |
| 737 | Round the number to a given precision. The first |
| 738 | parameter specifies the precision (default is ``0``), the |
| 739 | second the rounding method: |
| 740 | |
| 741 | - ``'common'`` rounds either up or down |
| 742 | - ``'ceil'`` always rounds up |
| 743 | - ``'floor'`` always rounds down |
| 744 | |
| 745 | If you don't specify a method ``'common'`` is used. |
| 746 | |
| 747 | .. sourcecode:: jinja |
| 748 | |
| 749 | {{ 42.55|round }} |
| 750 | -> 43 |
| 751 | {{ 42.55|round(1, 'floor') }} |
| 752 | -> 42.5 |
Armin Ronacher | a38b312 | 2007-04-15 00:49:13 +0200 | [diff] [blame] | 753 | |
| 754 | *new in Jinja 1.1* |
Armin Ronacher | eec3138 | 2007-04-14 14:50:45 +0200 | [diff] [blame] | 755 | """ |
| 756 | if not method in ('common', 'ceil', 'floor'): |
| 757 | raise FilterArgumentError('method must be common, ceil or floor') |
| 758 | if precision < 0: |
| 759 | raise FilterArgumentError('precision must be a postive integer ' |
| 760 | 'or zero.') |
| 761 | def wrapped(env, context, value): |
| 762 | if method == 'common': |
| 763 | return round(value, precision) |
| 764 | import math |
| 765 | func = getattr(math, method) |
Armin Ronacher | 2158091 | 2007-04-17 17:13:10 +0200 | [diff] [blame] | 766 | if precision: |
| 767 | return func(value * 10 * precision) / (10 * precision) |
| 768 | else: |
| 769 | return func(value) |
Armin Ronacher | eec3138 | 2007-04-14 14:50:45 +0200 | [diff] [blame] | 770 | return wrapped |
| 771 | |
| 772 | |
Armin Ronacher | 9bcd411 | 2007-05-29 14:17:24 +0200 | [diff] [blame] | 773 | def do_sort(reverse=False): |
| 774 | """ |
| 775 | Sort a sequence. Per default it sorts ascending, if you pass it |
| 776 | `True` as first argument it will reverse the sorting. |
| 777 | |
| 778 | *new in Jinja 1.1* |
| 779 | """ |
| 780 | def wrapped(env, context, value): |
| 781 | return sorted(value, reverse=reverse) |
| 782 | return wrapped |
| 783 | |
| 784 | |
Armin Ronacher | e39a5d2 | 2007-06-23 21:11:53 +0200 | [diff] [blame] | 785 | def do_groupby(attribute): |
| 786 | """ |
| 787 | Group a sequence of objects by a common attribute. |
| 788 | |
| 789 | If you for example have a list of dicts or objects that represent persons |
| 790 | with `gender`, `first_name` and `last_name` attributes and you want to |
| 791 | group all users by genders you can do something like the following |
| 792 | snippet: |
| 793 | |
| 794 | .. sourcecode:: html+jinja |
| 795 | |
| 796 | <ul> |
| 797 | {% for group in persons|groupby('gender') %} |
| 798 | <li>{{ group.grouper }}<ul> |
| 799 | {% for person in group.list %} |
| 800 | <li>{{ person.first_name }} {{ person.last_name }}</li> |
| 801 | {% endfor %}</ul></li> |
| 802 | {% endfor %} |
| 803 | </ul> |
| 804 | |
| 805 | As you can see the item we're grouping by is stored in the `grouper` |
| 806 | attribute and the `list` contains all the objects that have this grouper |
| 807 | in common. |
Armin Ronacher | 69ddc58 | 2007-06-24 12:37:13 +0200 | [diff] [blame] | 808 | |
| 809 | *New in Jinja 1.2* |
Armin Ronacher | e39a5d2 | 2007-06-23 21:11:53 +0200 | [diff] [blame] | 810 | """ |
| 811 | def wrapped(env, context, value): |
| 812 | expr = lambda x: env.get_attribute(x, attribute) |
Armin Ronacher | 30ffab1 | 2007-07-10 20:51:47 +0200 | [diff] [blame] | 813 | return sorted([{ |
Armin Ronacher | e39a5d2 | 2007-06-23 21:11:53 +0200 | [diff] [blame] | 814 | 'grouper': a, |
| 815 | 'list': list(b) |
Armin Ronacher | 30ffab1 | 2007-07-10 20:51:47 +0200 | [diff] [blame] | 816 | } for a, b in groupby(sorted(value, key=expr), expr)], |
| 817 | key=itemgetter('grouper')) |
Armin Ronacher | e39a5d2 | 2007-06-23 21:11:53 +0200 | [diff] [blame] | 818 | return wrapped |
| 819 | |
| 820 | |
Armin Ronacher | 1cc232c | 2007-09-07 17:52:41 +0200 | [diff] [blame] | 821 | def do_getattribute(attribute): |
| 822 | """ |
| 823 | Get one attribute from an object. Normally you don't have to use this |
| 824 | filter because the attribute and subscript expressions try to either |
| 825 | get an attribute of an object or an item. In some situations it could |
| 826 | be that there is an item *and* an attribute with the same name. In that |
| 827 | situation only the item is returned, never the attribute. |
| 828 | |
| 829 | .. sourcecode:: jinja |
| 830 | |
| 831 | {{ foo.bar }} -> {{ foo|getattribute('bar') }} |
| 832 | |
| 833 | *New in Jinja 1.2* |
| 834 | """ |
| 835 | def wrapped(env, context, value): |
| 836 | try: |
| 837 | return get_attribute(value, attribute) |
| 838 | except (SecurityException, AttributeError): |
| 839 | return env.undefined_singleton |
| 840 | return wrapped |
| 841 | |
| 842 | |
| 843 | def do_getitem(key): |
| 844 | """ |
| 845 | This filter basically works like the normal subscript expression but |
| 846 | it doesn't fall back to attribute lookup. If an item does not exist for |
| 847 | an object undefined is returned. |
| 848 | |
| 849 | .. sourcecode:: jinja |
| 850 | |
| 851 | {{ foo.bar }} -> {{ foo|getitem('bar') }} |
| 852 | |
| 853 | *New in Jinja 1.2* |
| 854 | """ |
| 855 | def wrapped(env, context, value): |
| 856 | try: |
| 857 | return value[key] |
| 858 | except (TypeError, KeyError, IndexError, AttributeError): |
| 859 | return env.undefined_singleton |
| 860 | return wrapped |
| 861 | |
| 862 | |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 863 | FILTERS = { |
| 864 | 'replace': do_replace, |
| 865 | 'upper': do_upper, |
| 866 | 'lower': do_lower, |
| 867 | 'escape': do_escape, |
| 868 | 'e': do_escape, |
Armin Ronacher | 450756b | 2007-04-15 15:13:59 +0200 | [diff] [blame] | 869 | 'xmlattr': do_xmlattr, |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 870 | 'capitalize': do_capitalize, |
| 871 | 'title': do_title, |
| 872 | 'default': do_default, |
| 873 | 'join': do_join, |
| 874 | 'count': do_count, |
Armin Ronacher | 2b76513 | 2007-03-13 16:48:10 +0100 | [diff] [blame] | 875 | 'dictsort': do_dictsort, |
Armin Ronacher | 68c8725 | 2007-03-06 17:35:54 +0100 | [diff] [blame] | 876 | 'length': do_count, |
Armin Ronacher | dbc945d | 2007-03-05 18:03:32 +0100 | [diff] [blame] | 877 | 'reverse': do_reverse, |
Armin Ronacher | fed86c1 | 2007-02-27 10:31:14 +0100 | [diff] [blame] | 878 | 'center': do_center, |
| 879 | 'title': do_title, |
| 880 | 'capitalize': do_capitalize, |
| 881 | 'first': do_first, |
| 882 | 'last': do_last, |
| 883 | 'random': do_random, |
| 884 | 'urlencode': do_urlencode, |
Armin Ronacher | 2b76513 | 2007-03-13 16:48:10 +0100 | [diff] [blame] | 885 | 'jsonencode': do_jsonencode, |
| 886 | 'filesizeformat': do_filesizeformat, |
| 887 | 'pprint': do_pprint, |
| 888 | 'indent': do_indent, |
| 889 | 'truncate': do_truncate, |
| 890 | 'wordwrap': do_wordwrap, |
| 891 | 'wordcount': do_wordcount, |
| 892 | 'textile': do_textile, |
| 893 | 'markdown': do_markdown, |
| 894 | 'rst': do_rst, |
| 895 | 'int': do_int, |
| 896 | 'float': do_float, |
Tassilo Schweyer | 934cb71 | 2007-03-14 18:04:07 +0100 | [diff] [blame] | 897 | 'string': do_string, |
Armin Ronacher | f0f4deb | 2007-03-18 23:10:15 +0100 | [diff] [blame] | 898 | 'urlize': do_urlize, |
| 899 | 'format': do_format, |
Armin Ronacher | 4965987 | 2007-05-12 23:29:33 +0200 | [diff] [blame] | 900 | 'dformat': do_dformat, |
Armin Ronacher | 566295e | 2007-03-19 13:19:34 +0100 | [diff] [blame] | 901 | 'capture': do_capture, |
Armin Ronacher | d071f95 | 2007-04-13 22:32:11 +0200 | [diff] [blame] | 902 | 'trim': do_trim, |
Georg Brandl | af31e4d | 2007-04-15 00:47:37 +0200 | [diff] [blame] | 903 | 'striptags': do_striptags, |
Armin Ronacher | d071f95 | 2007-04-13 22:32:11 +0200 | [diff] [blame] | 904 | 'slice': do_slice, |
Armin Ronacher | eec3138 | 2007-04-14 14:50:45 +0200 | [diff] [blame] | 905 | 'batch': do_batch, |
| 906 | 'sum': do_sum, |
| 907 | 'abs': do_abs, |
Armin Ronacher | 9bcd411 | 2007-05-29 14:17:24 +0200 | [diff] [blame] | 908 | 'round': do_round, |
Armin Ronacher | e39a5d2 | 2007-06-23 21:11:53 +0200 | [diff] [blame] | 909 | 'sort': do_sort, |
Armin Ronacher | 1cc232c | 2007-09-07 17:52:41 +0200 | [diff] [blame] | 910 | 'groupby': do_groupby, |
| 911 | 'getattribute': do_getattribute, |
| 912 | 'getitem': do_getitem |
Armin Ronacher | 92f572f | 2007-02-26 22:17:32 +0100 | [diff] [blame] | 913 | } |