Show More
@@ -1,689 +1,691 b'' | |||
|
1 | 1 | # templateutil.py - utility for template evaluation |
|
2 | 2 | # |
|
3 | 3 | # Copyright 2005, 2006 Matt Mackall <mpm@selenic.com> |
|
4 | 4 | # |
|
5 | 5 | # This software may be used and distributed according to the terms of the |
|
6 | 6 | # GNU General Public License version 2 or any later version. |
|
7 | 7 | |
|
8 | 8 | from __future__ import absolute_import |
|
9 | 9 | |
|
10 | 10 | import abc |
|
11 | 11 | import types |
|
12 | 12 | |
|
13 | 13 | from .i18n import _ |
|
14 | 14 | from . import ( |
|
15 | 15 | error, |
|
16 | 16 | pycompat, |
|
17 | 17 | util, |
|
18 | 18 | ) |
|
19 | 19 | from .utils import ( |
|
20 | 20 | dateutil, |
|
21 | 21 | stringutil, |
|
22 | 22 | ) |
|
23 | 23 | |
|
24 | 24 | class ResourceUnavailable(error.Abort): |
|
25 | 25 | pass |
|
26 | 26 | |
|
27 | 27 | class TemplateNotFound(error.Abort): |
|
28 | 28 | pass |
|
29 | 29 | |
|
30 | 30 | class wrapped(object): |
|
31 | 31 | """Object requiring extra conversion prior to displaying or processing |
|
32 | 32 | as value |
|
33 | 33 | |
|
34 | 34 | Use unwrapvalue(), unwrapastype(), or unwraphybrid() to obtain the inner |
|
35 | 35 | object. |
|
36 | 36 | """ |
|
37 | 37 | |
|
38 | 38 | __metaclass__ = abc.ABCMeta |
|
39 | 39 | |
|
40 | 40 | @abc.abstractmethod |
|
41 | 41 | def itermaps(self, context): |
|
42 | 42 | """Yield each template mapping""" |
|
43 | 43 | |
|
44 | 44 | @abc.abstractmethod |
|
45 | 45 | def join(self, context, mapping, sep): |
|
46 | 46 | """Join items with the separator; Returns a bytes or (possibly nested) |
|
47 | 47 | generator of bytes |
|
48 | 48 | |
|
49 | 49 | A pre-configured template may be rendered per item if this container |
|
50 | 50 | holds unprintable items. |
|
51 | 51 | """ |
|
52 | 52 | |
|
53 | 53 | @abc.abstractmethod |
|
54 | 54 | def show(self, context, mapping): |
|
55 | 55 | """Return a bytes or (possibly nested) generator of bytes representing |
|
56 | 56 | the underlying object |
|
57 | 57 | |
|
58 | 58 | A pre-configured template may be rendered if the underlying object is |
|
59 | 59 | not printable. |
|
60 | 60 | """ |
|
61 | 61 | |
|
62 | 62 | @abc.abstractmethod |
|
63 | 63 | def tovalue(self, context, mapping): |
|
64 | 64 | """Move the inner value object out or create a value representation |
|
65 | 65 | |
|
66 | 66 | A returned value must be serializable by templaterfilters.json(). |
|
67 | 67 | """ |
|
68 | 68 | |
|
69 | 69 | # stub for representing a date type; may be a real date type that can |
|
70 | 70 | # provide a readable string value |
|
71 | 71 | class date(object): |
|
72 | 72 | pass |
|
73 | 73 | |
|
74 | 74 | class hybrid(wrapped): |
|
75 | 75 | """Wrapper for list or dict to support legacy template |
|
76 | 76 | |
|
77 | 77 | This class allows us to handle both: |
|
78 | 78 | - "{files}" (legacy command-line-specific list hack) and |
|
79 | 79 | - "{files % '{file}\n'}" (hgweb-style with inlining and function support) |
|
80 | 80 | and to access raw values: |
|
81 | 81 | - "{ifcontains(file, files, ...)}", "{ifcontains(key, extras, ...)}" |
|
82 | 82 | - "{get(extras, key)}" |
|
83 | 83 | - "{files|json}" |
|
84 | 84 | """ |
|
85 | 85 | |
|
86 | 86 | def __init__(self, gen, values, makemap, joinfmt, keytype=None): |
|
87 | 87 | self._gen = gen # generator or function returning generator |
|
88 | 88 | self._values = values |
|
89 | 89 | self._makemap = makemap |
|
90 | 90 | self._joinfmt = joinfmt |
|
91 | 91 | self.keytype = keytype # hint for 'x in y' where type(x) is unresolved |
|
92 | 92 | |
|
93 | 93 | def itermaps(self, context): |
|
94 | 94 | makemap = self._makemap |
|
95 | 95 | for x in self._values: |
|
96 | 96 | yield makemap(x) |
|
97 | 97 | |
|
98 | 98 | def join(self, context, mapping, sep): |
|
99 | 99 | # TODO: switch gen to (context, mapping) API? |
|
100 | 100 | return joinitems((self._joinfmt(x) for x in self._values), sep) |
|
101 | 101 | |
|
102 | 102 | def show(self, context, mapping): |
|
103 | 103 | # TODO: switch gen to (context, mapping) API? |
|
104 | 104 | gen = self._gen |
|
105 | 105 | if gen is None: |
|
106 | 106 | return self.join(context, mapping, ' ') |
|
107 | 107 | if callable(gen): |
|
108 | 108 | return gen() |
|
109 | 109 | return gen |
|
110 | 110 | |
|
111 | 111 | def tovalue(self, context, mapping): |
|
112 | 112 | # TODO: return self._values and get rid of proxy methods |
|
113 | 113 | return self |
|
114 | 114 | |
|
115 | 115 | def __contains__(self, x): |
|
116 | 116 | return x in self._values |
|
117 | 117 | def __getitem__(self, key): |
|
118 | 118 | return self._values[key] |
|
119 | 119 | def __len__(self): |
|
120 | 120 | return len(self._values) |
|
121 | 121 | def __iter__(self): |
|
122 | 122 | return iter(self._values) |
|
123 | 123 | def __getattr__(self, name): |
|
124 | 124 | if name not in (r'get', r'items', r'iteritems', r'iterkeys', |
|
125 | 125 | r'itervalues', r'keys', r'values'): |
|
126 | 126 | raise AttributeError(name) |
|
127 | 127 | return getattr(self._values, name) |
|
128 | 128 | |
|
129 | 129 | class mappable(wrapped): |
|
130 | 130 | """Wrapper for non-list/dict object to support map operation |
|
131 | 131 | |
|
132 | 132 | This class allows us to handle both: |
|
133 | 133 | - "{manifest}" |
|
134 | 134 | - "{manifest % '{rev}:{node}'}" |
|
135 | 135 | - "{manifest.rev}" |
|
136 | 136 | |
|
137 | 137 | Unlike a hybrid, this does not simulate the behavior of the underling |
|
138 | 138 | value. |
|
139 | 139 | """ |
|
140 | 140 | |
|
141 | 141 | def __init__(self, gen, key, value, makemap): |
|
142 | 142 | self._gen = gen # generator or function returning generator |
|
143 | 143 | self._key = key |
|
144 | 144 | self._value = value # may be generator of strings |
|
145 | 145 | self._makemap = makemap |
|
146 | 146 | |
|
147 | 147 | def tomap(self): |
|
148 | 148 | return self._makemap(self._key) |
|
149 | 149 | |
|
150 | 150 | def itermaps(self, context): |
|
151 | 151 | yield self.tomap() |
|
152 | 152 | |
|
153 | 153 | def join(self, context, mapping, sep): |
|
154 | 154 | # TODO: just copies the old behavior where a value was a generator |
|
155 | 155 | # yielding one item, but reconsider about it. join() over a string |
|
156 | 156 | # has no consistent result because a string may be a bytes, or a |
|
157 | 157 | # generator yielding an item, or a generator yielding multiple items. |
|
158 | 158 | # Preserving all of the current behaviors wouldn't make any sense. |
|
159 | 159 | return self.show(context, mapping) |
|
160 | 160 | |
|
161 | 161 | def show(self, context, mapping): |
|
162 | 162 | # TODO: switch gen to (context, mapping) API? |
|
163 | 163 | gen = self._gen |
|
164 | 164 | if gen is None: |
|
165 | 165 | return pycompat.bytestr(self._value) |
|
166 | 166 | if callable(gen): |
|
167 | 167 | return gen() |
|
168 | 168 | return gen |
|
169 | 169 | |
|
170 | 170 | def tovalue(self, context, mapping): |
|
171 | 171 | return _unthunk(context, mapping, self._value) |
|
172 | 172 | |
|
173 | 173 | class _mappingsequence(wrapped): |
|
174 | 174 | """Wrapper for sequence of template mappings |
|
175 | 175 | |
|
176 | 176 | This represents an inner template structure (i.e. a list of dicts), |
|
177 | 177 | which can also be rendered by the specified named/literal template. |
|
178 | 178 | |
|
179 | 179 | Template mappings may be nested. |
|
180 | 180 | """ |
|
181 | 181 | |
|
182 | 182 | def __init__(self, name=None, tmpl=None, sep=''): |
|
183 | 183 | if name is not None and tmpl is not None: |
|
184 | 184 | raise error.ProgrammingError('name and tmpl are mutually exclusive') |
|
185 | 185 | self._name = name |
|
186 | 186 | self._tmpl = tmpl |
|
187 | 187 | self._defaultsep = sep |
|
188 | 188 | |
|
189 | 189 | def join(self, context, mapping, sep): |
|
190 | 190 | mapsiter = _iteroverlaymaps(context, mapping, self.itermaps(context)) |
|
191 | 191 | if self._name: |
|
192 | 192 | itemiter = (context.process(self._name, m) for m in mapsiter) |
|
193 | 193 | elif self._tmpl: |
|
194 | 194 | itemiter = (context.expand(self._tmpl, m) for m in mapsiter) |
|
195 | 195 | else: |
|
196 | 196 | raise error.ParseError(_('not displayable without template')) |
|
197 | 197 | return joinitems(itemiter, sep) |
|
198 | 198 | |
|
199 | 199 | def show(self, context, mapping): |
|
200 | 200 | return self.join(context, mapping, self._defaultsep) |
|
201 | 201 | |
|
202 | 202 | def tovalue(self, context, mapping): |
|
203 | 203 | knownres = context.knownresourcekeys() |
|
204 | 204 | items = [] |
|
205 | 205 | for nm in self.itermaps(context): |
|
206 | 206 | # drop internal resources (recursively) which shouldn't be displayed |
|
207 | 207 | lm = context.overlaymap(mapping, nm) |
|
208 | 208 | items.append({k: unwrapvalue(context, lm, v) |
|
209 | 209 | for k, v in nm.iteritems() if k not in knownres}) |
|
210 | 210 | return items |
|
211 | 211 | |
|
212 | 212 | class mappinggenerator(_mappingsequence): |
|
213 | 213 | """Wrapper for generator of template mappings |
|
214 | 214 | |
|
215 | 215 | The function ``make(context, *args)`` should return a generator of |
|
216 | 216 | mapping dicts. |
|
217 | 217 | """ |
|
218 | 218 | |
|
219 | 219 | def __init__(self, make, args=(), name=None, tmpl=None, sep=''): |
|
220 | 220 | super(mappinggenerator, self).__init__(name, tmpl, sep) |
|
221 | 221 | self._make = make |
|
222 | 222 | self._args = args |
|
223 | 223 | |
|
224 | 224 | def itermaps(self, context): |
|
225 | 225 | return self._make(context, *self._args) |
|
226 | 226 | |
|
227 | 227 | class mappinglist(_mappingsequence): |
|
228 | 228 | """Wrapper for list of template mappings""" |
|
229 | 229 | |
|
230 | 230 | def __init__(self, mappings, name=None, tmpl=None, sep=''): |
|
231 | 231 | super(mappinglist, self).__init__(name, tmpl, sep) |
|
232 | 232 | self._mappings = mappings |
|
233 | 233 | |
|
234 | 234 | def itermaps(self, context): |
|
235 | 235 | return iter(self._mappings) |
|
236 | 236 | |
|
237 | 237 | class mappedgenerator(wrapped): |
|
238 | 238 | """Wrapper for generator of strings which acts as a list |
|
239 | 239 | |
|
240 | 240 | The function ``make(context, *args)`` should return a generator of |
|
241 | 241 | byte strings, or a generator of (possibly nested) generators of byte |
|
242 | 242 | strings (i.e. a generator for a list of byte strings.) |
|
243 | 243 | """ |
|
244 | 244 | |
|
245 | 245 | def __init__(self, make, args=()): |
|
246 | 246 | self._make = make |
|
247 | 247 | self._args = args |
|
248 | 248 | |
|
249 | 249 | def _gen(self, context): |
|
250 | 250 | return self._make(context, *self._args) |
|
251 | 251 | |
|
252 | 252 | def itermaps(self, context): |
|
253 | 253 | raise error.ParseError(_('list of strings is not mappable')) |
|
254 | 254 | |
|
255 | 255 | def join(self, context, mapping, sep): |
|
256 | 256 | return joinitems(self._gen(context), sep) |
|
257 | 257 | |
|
258 | 258 | def show(self, context, mapping): |
|
259 | 259 | return self.join(context, mapping, '') |
|
260 | 260 | |
|
261 | 261 | def tovalue(self, context, mapping): |
|
262 | 262 | return [stringify(context, mapping, x) for x in self._gen(context)] |
|
263 | 263 | |
|
264 | 264 | def hybriddict(data, key='key', value='value', fmt=None, gen=None): |
|
265 | 265 | """Wrap data to support both dict-like and string-like operations""" |
|
266 | 266 | prefmt = pycompat.identity |
|
267 | 267 | if fmt is None: |
|
268 | 268 | fmt = '%s=%s' |
|
269 | 269 | prefmt = pycompat.bytestr |
|
270 | 270 | return hybrid(gen, data, lambda k: {key: k, value: data[k]}, |
|
271 | 271 | lambda k: fmt % (prefmt(k), prefmt(data[k]))) |
|
272 | 272 | |
|
273 | 273 | def hybridlist(data, name, fmt=None, gen=None): |
|
274 | 274 | """Wrap data to support both list-like and string-like operations""" |
|
275 | 275 | prefmt = pycompat.identity |
|
276 | 276 | if fmt is None: |
|
277 | 277 | fmt = '%s' |
|
278 | 278 | prefmt = pycompat.bytestr |
|
279 | 279 | return hybrid(gen, data, lambda x: {name: x}, lambda x: fmt % prefmt(x)) |
|
280 | 280 | |
|
281 | 281 | def unwraphybrid(context, mapping, thing): |
|
282 | 282 | """Return an object which can be stringified possibly by using a legacy |
|
283 | 283 | template""" |
|
284 | 284 | if not isinstance(thing, wrapped): |
|
285 | 285 | return thing |
|
286 | 286 | return thing.show(context, mapping) |
|
287 | 287 | |
|
288 | 288 | def unwrapvalue(context, mapping, thing): |
|
289 | 289 | """Move the inner value object out of the wrapper""" |
|
290 | 290 | if not isinstance(thing, wrapped): |
|
291 | 291 | return thing |
|
292 | 292 | return thing.tovalue(context, mapping) |
|
293 | 293 | |
|
294 | 294 | def wraphybridvalue(container, key, value): |
|
295 | 295 | """Wrap an element of hybrid container to be mappable |
|
296 | 296 | |
|
297 | 297 | The key is passed to the makemap function of the given container, which |
|
298 | 298 | should be an item generated by iter(container). |
|
299 | 299 | """ |
|
300 | 300 | makemap = getattr(container, '_makemap', None) |
|
301 | 301 | if makemap is None: |
|
302 | 302 | return value |
|
303 | 303 | if util.safehasattr(value, '_makemap'): |
|
304 | 304 | # a nested hybrid list/dict, which has its own way of map operation |
|
305 | 305 | return value |
|
306 | 306 | return mappable(None, key, value, makemap) |
|
307 | 307 | |
|
308 | 308 | def compatdict(context, mapping, name, data, key='key', value='value', |
|
309 | 309 | fmt=None, plural=None, separator=' '): |
|
310 | 310 | """Wrap data like hybriddict(), but also supports old-style list template |
|
311 | 311 | |
|
312 | 312 | This exists for backward compatibility with the old-style template. Use |
|
313 | 313 | hybriddict() for new template keywords. |
|
314 | 314 | """ |
|
315 | 315 | c = [{key: k, value: v} for k, v in data.iteritems()] |
|
316 | 316 | f = _showcompatlist(context, mapping, name, c, plural, separator) |
|
317 | 317 | return hybriddict(data, key=key, value=value, fmt=fmt, gen=f) |
|
318 | 318 | |
|
319 | 319 | def compatlist(context, mapping, name, data, element=None, fmt=None, |
|
320 | 320 | plural=None, separator=' '): |
|
321 | 321 | """Wrap data like hybridlist(), but also supports old-style list template |
|
322 | 322 | |
|
323 | 323 | This exists for backward compatibility with the old-style template. Use |
|
324 | 324 | hybridlist() for new template keywords. |
|
325 | 325 | """ |
|
326 | 326 | f = _showcompatlist(context, mapping, name, data, plural, separator) |
|
327 | 327 | return hybridlist(data, name=element or name, fmt=fmt, gen=f) |
|
328 | 328 | |
|
329 | 329 | def _showcompatlist(context, mapping, name, values, plural=None, separator=' '): |
|
330 | 330 | """Return a generator that renders old-style list template |
|
331 | 331 | |
|
332 | 332 | name is name of key in template map. |
|
333 | 333 | values is list of strings or dicts. |
|
334 | 334 | plural is plural of name, if not simply name + 's'. |
|
335 | 335 | separator is used to join values as a string |
|
336 | 336 | |
|
337 | 337 | expansion works like this, given name 'foo'. |
|
338 | 338 | |
|
339 | 339 | if values is empty, expand 'no_foos'. |
|
340 | 340 | |
|
341 | 341 | if 'foo' not in template map, return values as a string, |
|
342 | 342 | joined by 'separator'. |
|
343 | 343 | |
|
344 | 344 | expand 'start_foos'. |
|
345 | 345 | |
|
346 | 346 | for each value, expand 'foo'. if 'last_foo' in template |
|
347 | 347 | map, expand it instead of 'foo' for last key. |
|
348 | 348 | |
|
349 | 349 | expand 'end_foos'. |
|
350 | 350 | """ |
|
351 | 351 | if not plural: |
|
352 | 352 | plural = name + 's' |
|
353 | 353 | if not values: |
|
354 | 354 | noname = 'no_' + plural |
|
355 | 355 | if context.preload(noname): |
|
356 | 356 | yield context.process(noname, mapping) |
|
357 | 357 | return |
|
358 | 358 | if not context.preload(name): |
|
359 | 359 | if isinstance(values[0], bytes): |
|
360 | 360 | yield separator.join(values) |
|
361 | 361 | else: |
|
362 | 362 | for v in values: |
|
363 | 363 | r = dict(v) |
|
364 | 364 | r.update(mapping) |
|
365 | 365 | yield r |
|
366 | 366 | return |
|
367 | 367 | startname = 'start_' + plural |
|
368 | 368 | if context.preload(startname): |
|
369 | 369 | yield context.process(startname, mapping) |
|
370 | 370 | def one(v, tag=name): |
|
371 | 371 | vmapping = {} |
|
372 | 372 | try: |
|
373 | 373 | vmapping.update(v) |
|
374 | 374 | # Python 2 raises ValueError if the type of v is wrong. Python |
|
375 | 375 | # 3 raises TypeError. |
|
376 | 376 | except (AttributeError, TypeError, ValueError): |
|
377 | 377 | try: |
|
378 | 378 | # Python 2 raises ValueError trying to destructure an e.g. |
|
379 | 379 | # bytes. Python 3 raises TypeError. |
|
380 | 380 | for a, b in v: |
|
381 | 381 | vmapping[a] = b |
|
382 | 382 | except (TypeError, ValueError): |
|
383 | 383 | vmapping[name] = v |
|
384 | 384 | vmapping = context.overlaymap(mapping, vmapping) |
|
385 | 385 | return context.process(tag, vmapping) |
|
386 | 386 | lastname = 'last_' + name |
|
387 | 387 | if context.preload(lastname): |
|
388 | 388 | last = values.pop() |
|
389 | 389 | else: |
|
390 | 390 | last = None |
|
391 | 391 | for v in values: |
|
392 | 392 | yield one(v) |
|
393 | 393 | if last is not None: |
|
394 | 394 | yield one(last, tag=lastname) |
|
395 | 395 | endname = 'end_' + plural |
|
396 | 396 | if context.preload(endname): |
|
397 | 397 | yield context.process(endname, mapping) |
|
398 | 398 | |
|
399 | 399 | def flatten(context, mapping, thing): |
|
400 | 400 | """Yield a single stream from a possibly nested set of iterators""" |
|
401 | 401 | thing = unwraphybrid(context, mapping, thing) |
|
402 | 402 | if isinstance(thing, bytes): |
|
403 | 403 | yield thing |
|
404 | 404 | elif isinstance(thing, str): |
|
405 | 405 | # We can only hit this on Python 3, and it's here to guard |
|
406 | 406 | # against infinite recursion. |
|
407 | 407 | raise error.ProgrammingError('Mercurial IO including templates is done' |
|
408 | 408 | ' with bytes, not strings, got %r' % thing) |
|
409 | 409 | elif thing is None: |
|
410 | 410 | pass |
|
411 | 411 | elif not util.safehasattr(thing, '__iter__'): |
|
412 | 412 | yield pycompat.bytestr(thing) |
|
413 | 413 | else: |
|
414 | 414 | for i in thing: |
|
415 | 415 | i = unwraphybrid(context, mapping, i) |
|
416 | 416 | if isinstance(i, bytes): |
|
417 | 417 | yield i |
|
418 | 418 | elif i is None: |
|
419 | 419 | pass |
|
420 | 420 | elif not util.safehasattr(i, '__iter__'): |
|
421 | 421 | yield pycompat.bytestr(i) |
|
422 | 422 | else: |
|
423 | 423 | for j in flatten(context, mapping, i): |
|
424 | 424 | yield j |
|
425 | 425 | |
|
426 | 426 | def stringify(context, mapping, thing): |
|
427 | 427 | """Turn values into bytes by converting into text and concatenating them""" |
|
428 | 428 | if isinstance(thing, bytes): |
|
429 | 429 | return thing # retain localstr to be round-tripped |
|
430 | 430 | return b''.join(flatten(context, mapping, thing)) |
|
431 | 431 | |
|
432 | 432 | def findsymbolicname(arg): |
|
433 | 433 | """Find symbolic name for the given compiled expression; returns None |
|
434 | 434 | if nothing found reliably""" |
|
435 | 435 | while True: |
|
436 | 436 | func, data = arg |
|
437 | 437 | if func is runsymbol: |
|
438 | 438 | return data |
|
439 | 439 | elif func is runfilter: |
|
440 | 440 | arg = data[0] |
|
441 | 441 | else: |
|
442 | 442 | return None |
|
443 | 443 | |
|
444 | 444 | def _unthunk(context, mapping, thing): |
|
445 | 445 | """Evaluate a lazy byte string into value""" |
|
446 | 446 | if not isinstance(thing, types.GeneratorType): |
|
447 | 447 | return thing |
|
448 | 448 | return stringify(context, mapping, thing) |
|
449 | 449 | |
|
450 | 450 | def evalrawexp(context, mapping, arg): |
|
451 | 451 | """Evaluate given argument as a bare template object which may require |
|
452 | 452 | further processing (such as folding generator of strings)""" |
|
453 | 453 | func, data = arg |
|
454 | 454 | return func(context, mapping, data) |
|
455 | 455 | |
|
456 | 456 | def evalfuncarg(context, mapping, arg): |
|
457 | 457 | """Evaluate given argument as value type""" |
|
458 | 458 | return _unwrapvalue(context, mapping, evalrawexp(context, mapping, arg)) |
|
459 | 459 | |
|
460 | 460 | # TODO: unify this with unwrapvalue() once the bug of templatefunc.join() |
|
461 | 461 | # is fixed. we can't do that right now because join() has to take a generator |
|
462 | 462 | # of byte strings as it is, not a lazy byte string. |
|
463 | 463 | def _unwrapvalue(context, mapping, thing): |
|
464 | thing = unwrapvalue(context, mapping, thing) | |
|
464 | if isinstance(thing, wrapped): | |
|
465 | return thing.tovalue(context, mapping) | |
|
465 | 466 | # evalrawexp() may return string, generator of strings or arbitrary object |
|
466 | 467 | # such as date tuple, but filter does not want generator. |
|
467 | 468 | return _unthunk(context, mapping, thing) |
|
468 | 469 | |
|
469 | 470 | def evalboolean(context, mapping, arg): |
|
470 | 471 | """Evaluate given argument as boolean, but also takes boolean literals""" |
|
471 | 472 | func, data = arg |
|
472 | 473 | if func is runsymbol: |
|
473 | 474 | thing = func(context, mapping, data, default=None) |
|
474 | 475 | if thing is None: |
|
475 | 476 | # not a template keyword, takes as a boolean literal |
|
476 | 477 | thing = stringutil.parsebool(data) |
|
477 | 478 | else: |
|
478 | 479 | thing = func(context, mapping, data) |
|
479 | thing = unwrapvalue(context, mapping, thing) | |
|
480 | if isinstance(thing, wrapped): | |
|
481 | thing = thing.tovalue(context, mapping) | |
|
480 | 482 | if isinstance(thing, bool): |
|
481 | 483 | return thing |
|
482 | 484 | # other objects are evaluated as strings, which means 0 is True, but |
|
483 | 485 | # empty dict/list should be False as they are expected to be '' |
|
484 | 486 | return bool(stringify(context, mapping, thing)) |
|
485 | 487 | |
|
486 | 488 | def evaldate(context, mapping, arg, err=None): |
|
487 | 489 | """Evaluate given argument as a date tuple or a date string; returns |
|
488 | 490 | a (unixtime, offset) tuple""" |
|
489 | 491 | thing = evalrawexp(context, mapping, arg) |
|
490 | 492 | return unwrapdate(context, mapping, thing, err) |
|
491 | 493 | |
|
492 | 494 | def unwrapdate(context, mapping, thing, err=None): |
|
493 | 495 | thing = _unwrapvalue(context, mapping, thing) |
|
494 | 496 | try: |
|
495 | 497 | return dateutil.parsedate(thing) |
|
496 | 498 | except AttributeError: |
|
497 | 499 | raise error.ParseError(err or _('not a date tuple nor a string')) |
|
498 | 500 | except error.ParseError: |
|
499 | 501 | if not err: |
|
500 | 502 | raise |
|
501 | 503 | raise error.ParseError(err) |
|
502 | 504 | |
|
503 | 505 | def evalinteger(context, mapping, arg, err=None): |
|
504 | 506 | thing = evalrawexp(context, mapping, arg) |
|
505 | 507 | return unwrapinteger(context, mapping, thing, err) |
|
506 | 508 | |
|
507 | 509 | def unwrapinteger(context, mapping, thing, err=None): |
|
508 | 510 | thing = _unwrapvalue(context, mapping, thing) |
|
509 | 511 | try: |
|
510 | 512 | return int(thing) |
|
511 | 513 | except (TypeError, ValueError): |
|
512 | 514 | raise error.ParseError(err or _('not an integer')) |
|
513 | 515 | |
|
514 | 516 | def evalstring(context, mapping, arg): |
|
515 | 517 | return stringify(context, mapping, evalrawexp(context, mapping, arg)) |
|
516 | 518 | |
|
517 | 519 | def evalstringliteral(context, mapping, arg): |
|
518 | 520 | """Evaluate given argument as string template, but returns symbol name |
|
519 | 521 | if it is unknown""" |
|
520 | 522 | func, data = arg |
|
521 | 523 | if func is runsymbol: |
|
522 | 524 | thing = func(context, mapping, data, default=data) |
|
523 | 525 | else: |
|
524 | 526 | thing = func(context, mapping, data) |
|
525 | 527 | return stringify(context, mapping, thing) |
|
526 | 528 | |
|
527 | 529 | _unwrapfuncbytype = { |
|
528 | 530 | None: _unwrapvalue, |
|
529 | 531 | bytes: stringify, |
|
530 | 532 | date: unwrapdate, |
|
531 | 533 | int: unwrapinteger, |
|
532 | 534 | } |
|
533 | 535 | |
|
534 | 536 | def unwrapastype(context, mapping, thing, typ): |
|
535 | 537 | """Move the inner value object out of the wrapper and coerce its type""" |
|
536 | 538 | try: |
|
537 | 539 | f = _unwrapfuncbytype[typ] |
|
538 | 540 | except KeyError: |
|
539 | 541 | raise error.ProgrammingError('invalid type specified: %r' % typ) |
|
540 | 542 | return f(context, mapping, thing) |
|
541 | 543 | |
|
542 | 544 | def runinteger(context, mapping, data): |
|
543 | 545 | return int(data) |
|
544 | 546 | |
|
545 | 547 | def runstring(context, mapping, data): |
|
546 | 548 | return data |
|
547 | 549 | |
|
548 | 550 | def _recursivesymbolblocker(key): |
|
549 | 551 | def showrecursion(**args): |
|
550 | 552 | raise error.Abort(_("recursive reference '%s' in template") % key) |
|
551 | 553 | return showrecursion |
|
552 | 554 | |
|
553 | 555 | def runsymbol(context, mapping, key, default=''): |
|
554 | 556 | v = context.symbol(mapping, key) |
|
555 | 557 | if v is None: |
|
556 | 558 | # put poison to cut recursion. we can't move this to parsing phase |
|
557 | 559 | # because "x = {x}" is allowed if "x" is a keyword. (issue4758) |
|
558 | 560 | safemapping = mapping.copy() |
|
559 | 561 | safemapping[key] = _recursivesymbolblocker(key) |
|
560 | 562 | try: |
|
561 | 563 | v = context.process(key, safemapping) |
|
562 | 564 | except TemplateNotFound: |
|
563 | 565 | v = default |
|
564 | 566 | if callable(v) and getattr(v, '_requires', None) is None: |
|
565 | 567 | # old templatekw: expand all keywords and resources |
|
566 | 568 | # (TODO: deprecate this after porting web template keywords to new API) |
|
567 | 569 | props = {k: context._resources.lookup(context, mapping, k) |
|
568 | 570 | for k in context._resources.knownkeys()} |
|
569 | 571 | # pass context to _showcompatlist() through templatekw._showlist() |
|
570 | 572 | props['templ'] = context |
|
571 | 573 | props.update(mapping) |
|
572 | 574 | return v(**pycompat.strkwargs(props)) |
|
573 | 575 | if callable(v): |
|
574 | 576 | # new templatekw |
|
575 | 577 | try: |
|
576 | 578 | return v(context, mapping) |
|
577 | 579 | except ResourceUnavailable: |
|
578 | 580 | # unsupported keyword is mapped to empty just like unknown keyword |
|
579 | 581 | return None |
|
580 | 582 | return v |
|
581 | 583 | |
|
582 | 584 | def runtemplate(context, mapping, template): |
|
583 | 585 | for arg in template: |
|
584 | 586 | yield evalrawexp(context, mapping, arg) |
|
585 | 587 | |
|
586 | 588 | def runfilter(context, mapping, data): |
|
587 | 589 | arg, filt = data |
|
588 | 590 | thing = evalrawexp(context, mapping, arg) |
|
589 | 591 | intype = getattr(filt, '_intype', None) |
|
590 | 592 | try: |
|
591 | 593 | thing = unwrapastype(context, mapping, thing, intype) |
|
592 | 594 | return filt(thing) |
|
593 | 595 | except error.ParseError as e: |
|
594 | 596 | raise error.ParseError(bytes(e), hint=_formatfiltererror(arg, filt)) |
|
595 | 597 | |
|
596 | 598 | def _formatfiltererror(arg, filt): |
|
597 | 599 | fn = pycompat.sysbytes(filt.__name__) |
|
598 | 600 | sym = findsymbolicname(arg) |
|
599 | 601 | if not sym: |
|
600 | 602 | return _("incompatible use of template filter '%s'") % fn |
|
601 | 603 | return (_("template filter '%s' is not compatible with keyword '%s'") |
|
602 | 604 | % (fn, sym)) |
|
603 | 605 | |
|
604 | 606 | def _checkeditermaps(darg, d): |
|
605 | 607 | try: |
|
606 | 608 | for v in d: |
|
607 | 609 | if not isinstance(v, dict): |
|
608 | 610 | raise TypeError |
|
609 | 611 | yield v |
|
610 | 612 | except TypeError: |
|
611 | 613 | sym = findsymbolicname(darg) |
|
612 | 614 | if sym: |
|
613 | 615 | raise error.ParseError(_("keyword '%s' is not iterable of mappings") |
|
614 | 616 | % sym) |
|
615 | 617 | else: |
|
616 | 618 | raise error.ParseError(_("%r is not iterable of mappings") % d) |
|
617 | 619 | |
|
618 | 620 | def _iteroverlaymaps(context, origmapping, newmappings): |
|
619 | 621 | """Generate combined mappings from the original mapping and an iterable |
|
620 | 622 | of partial mappings to override the original""" |
|
621 | 623 | for i, nm in enumerate(newmappings): |
|
622 | 624 | lm = context.overlaymap(origmapping, nm) |
|
623 | 625 | lm['index'] = i |
|
624 | 626 | yield lm |
|
625 | 627 | |
|
626 | 628 | def _applymap(context, mapping, diter, targ): |
|
627 | 629 | for lm in _iteroverlaymaps(context, mapping, diter): |
|
628 | 630 | yield evalrawexp(context, lm, targ) |
|
629 | 631 | |
|
630 | 632 | def runmap(context, mapping, data): |
|
631 | 633 | darg, targ = data |
|
632 | 634 | d = evalrawexp(context, mapping, darg) |
|
633 | 635 | # TODO: a generator should be rejected because it is a thunk of lazy |
|
634 | 636 | # string, but we can't because hgweb abuses generator as a keyword |
|
635 | 637 | # that returns a list of dicts. |
|
636 | 638 | # TODO: drop _checkeditermaps() and pass 'd' to mappedgenerator so it |
|
637 | 639 | # can be restarted. |
|
638 | 640 | if isinstance(d, wrapped): |
|
639 | 641 | diter = d.itermaps(context) |
|
640 | 642 | else: |
|
641 | 643 | diter = _checkeditermaps(darg, d) |
|
642 | 644 | return mappedgenerator(_applymap, args=(mapping, diter, targ)) |
|
643 | 645 | |
|
644 | 646 | def runmember(context, mapping, data): |
|
645 | 647 | darg, memb = data |
|
646 | 648 | d = evalrawexp(context, mapping, darg) |
|
647 | 649 | if util.safehasattr(d, 'tomap'): |
|
648 | 650 | lm = context.overlaymap(mapping, d.tomap()) |
|
649 | 651 | return runsymbol(context, lm, memb) |
|
650 | 652 | if util.safehasattr(d, 'get'): |
|
651 | 653 | return getdictitem(d, memb) |
|
652 | 654 | |
|
653 | 655 | sym = findsymbolicname(darg) |
|
654 | 656 | if sym: |
|
655 | 657 | raise error.ParseError(_("keyword '%s' has no member") % sym) |
|
656 | 658 | else: |
|
657 | 659 | raise error.ParseError(_("%r has no member") % pycompat.bytestr(d)) |
|
658 | 660 | |
|
659 | 661 | def runnegate(context, mapping, data): |
|
660 | 662 | data = evalinteger(context, mapping, data, |
|
661 | 663 | _('negation needs an integer argument')) |
|
662 | 664 | return -data |
|
663 | 665 | |
|
664 | 666 | def runarithmetic(context, mapping, data): |
|
665 | 667 | func, left, right = data |
|
666 | 668 | left = evalinteger(context, mapping, left, |
|
667 | 669 | _('arithmetic only defined on integers')) |
|
668 | 670 | right = evalinteger(context, mapping, right, |
|
669 | 671 | _('arithmetic only defined on integers')) |
|
670 | 672 | try: |
|
671 | 673 | return func(left, right) |
|
672 | 674 | except ZeroDivisionError: |
|
673 | 675 | raise error.Abort(_('division by zero is not defined')) |
|
674 | 676 | |
|
675 | 677 | def getdictitem(dictarg, key): |
|
676 | 678 | val = dictarg.get(key) |
|
677 | 679 | if val is None: |
|
678 | 680 | return |
|
679 | 681 | return wraphybridvalue(dictarg, key, val) |
|
680 | 682 | |
|
681 | 683 | def joinitems(itemiter, sep): |
|
682 | 684 | """Join items with the separator; Returns generator of bytes""" |
|
683 | 685 | first = True |
|
684 | 686 | for x in itemiter: |
|
685 | 687 | if first: |
|
686 | 688 | first = False |
|
687 | 689 | elif sep: |
|
688 | 690 | yield sep |
|
689 | 691 | yield x |
General Comments 0
You need to be logged in to leave comments.
Login now