Coverage for pygeodesy/streprs.py: 96%
275 statements
« prev ^ index » next coverage.py v7.2.2, created at 2024-05-06 16:50 -0400
« prev ^ index » next coverage.py v7.2.2, created at 2024-05-06 16:50 -0400
2# -*- coding: utf-8 -*-
4u'''Floating point and other formatting utilities.
5'''
7from pygeodesy.basics import isint, islistuple, isscalar, isstr, itemsorted, \
8 _zip, _0_0
9# from pygeodesy.constants import _0_0
10from pygeodesy.errors import _or, _AttributeError, _IsnotError, _TypeError, \
11 _ValueError, _xkwds_get, _xkwds_item2, _xkwds_pop2
12from pygeodesy.interns import NN, _0_, _0to9_, MISSING, _BAR_, _COMMASPACE_, \
13 _DOT_, _E_, _ELLIPSIS_, _EQUAL_, _H_, _LR_PAIRS, \
14 _N_, _name_, _not_, _not_scalar_, _PERCENT_, \
15 _SPACE_, _STAR_, _UNDER_, _dunder_nameof
16from pygeodesy.interns import _convergence_, _distant_, _e_, _eps_, _exceeds_, \
17 _EQUALSPACED_, _f_, _F_, _g_, _limit_, _no_, \
18 _tolerance_ # PYCHOK used!
19from pygeodesy.lazily import _ALL_LAZY, _ALL_MODS as _MODS
21from math import fabs, log10 as _log10
23__all__ = _ALL_LAZY.streprs
24__version__ = '24.05.04'
26_at_ = 'at' # PYCHOK used!
27_EN_PREC = 6 # max MGRS/OSGR precision, 1 micrometer
28_EN_WIDE = 5 # number of MGRS/OSGR units, log10(_100km)
29_OKd_ = '._-' # acceptable name characters
30_PAREN_g = '(%g)' # PYCHOK used!
31_RESIDUAL_ = 'RESIDUAL' # PYCHOK used!
32_threshold_ = 'threshold' # PYCHOK used!
35class _Fmt(str):
36 '''(INTERNAL) Callable formatting.
37 '''
38 name = NN
40 def __call__(self, *name_value_, **name_value):
41 '''Format a C{name=value} pair or C{name, value} pair or
42 just a single C{value}.
43 '''
44 for n, v in name_value.items():
45 break
46 else:
47 n, v = name_value_[:2] if len(name_value_) > 1 else \
48 (NN, (name_value_ or MISSING))
49 t = str.__mod__(self, v)
50 return NN(n, t) if n else t
52# def __mod__(self, arg, **unused):
53# '''Regular C{%} operator.
54# '''
55# return str.__mod__(self, arg)
58class Fstr(str):
59 '''(INTERNAL) C{float} format.
60 '''
61 name = NN
63 def __call__(self, flt, prec=None, ints=False):
64 '''Format the B{C{flt}} like function L{fstr}.
65 '''
66 # see also function C{fstr} if isscalar case below
67 t = str.__mod__(_pct(self), flt) if prec is None else next(
68 _streprs(prec, (flt,), self, ints, True, None))
69 return t
71 def __mod__(self, arg, **unused):
72 '''Regular C{%} operator.
74 @arg arg: A C{scalar} value to be formatted (either
75 the C{scalar}, or a 1-tuple C{(scalar,)},
76 or 2-tuple C{(prec, scalar)}.
78 @raise TypeError: Non-scalar B{C{arg}} value.
80 @raise ValueError: Invalid B{C{arg}}.
81 '''
82 def _error(arg):
83 n = _DOT_(Fstr.__name__, self.name or self)
84 return _SPACE_(n, _PERCENT_, repr(arg))
86 prec = 6 # default std %f and %F
87 if islistuple(arg):
88 n = len(arg)
89 if n == 1:
90 arg = arg[0]
91 elif n == 2:
92 prec, arg = arg
93 else:
94 raise _ValueError(_error(arg))
96 if not isscalar(arg):
97 raise _TypeError(_error(arg))
98 return self(arg, prec=prec) # Fstr.__call__(self, arg, prec=prec)
101class _Sub(str):
102 '''(INTERNAL) Class list formatter.
103 '''
104 # see .ellipsoidalNvector.LatLon.deltaTo
105 def __call__(self, *Classes):
106 t = _or(*(C.__name__ for C in Classes))
107 return str.__mod__(self, t or MISSING)
110class Fmt(object):
111 '''Formatting options.
112 '''
113 ANGLE = _Fmt('<%s>')
114 COLON = _Fmt(':%s')
115# COLONSPACE = _Fmt(': %s') # == _COLONSPACE_(n, v)
116# COMMASPACE = _Fmt(', %s') # == _COMMASPACE_(n, v)
117 convergence = _Fmt(_convergence_(_PAREN_g))
118 CURLY = _Fmt('{%s}') # BRACES
119 distant = _Fmt(_distant_('(%.3g)'))
120 DOT = _Fmt('.%s') # == NN(_DOT_, n)
121 e = Fstr(_e_)
122 E = Fstr(_E_)
123 EQUAL = _Fmt(_EQUAL_(NN, '%s'))
124 EQUALg = _Fmt(_EQUAL_(NN, '%g'))
125 EQUALSPACED = _Fmt(_EQUALSPACED_(NN, '%s'))
126 exceeds_eps = _Fmt(_exceeds_(_eps_, _PAREN_g))
127 exceeds_limit = _Fmt(_exceeds_(_limit_, _PAREN_g))
128 exceeds_R = _Fmt(_exceeds_(_RESIDUAL_, _PAREN_g))
129 f = Fstr(_f_)
130 F = Fstr(_F_)
131 g = Fstr(_g_)
132 G = Fstr('G')
133 h = Fstr('%+.*f') # height, .streprs.hstr
134 limit = _Fmt(' %s limit') # .units
135 LOPEN = _Fmt('(%s]') # left-open range (L, R]
136 PAREN = _Fmt('(%s)')
137 PAREN_g = _Fmt(_PAREN_g)
138 PARENSPACED = _Fmt(' (%s)')
139 QUOTE2 = _Fmt('"%s"')
140 ROPEN = _Fmt('[%s)') # right-open range [L, R)
141# SPACE = _Fmt(' %s') # == _SPACE_(n, v)
142 SQUARE = _Fmt('[%s]') # BRACKETS
143 sub_class = _Sub('%s (sub-)class')
144 TAG = ANGLE
145 TAGEND = _Fmt('</%s>')
146 tolerance = _Fmt(_tolerance_(_PAREN_g))
147 zone = _Fmt('%02d') # .epsg, .mgrs, .utmupsBase
149 def __init__(self):
150 for n, a in self.__class__.__dict__.items():
151 if isinstance(a, (Fstr, _Fmt)):
152 setattr(a, _name_, n)
154 def __call__(self, obj, prec=9):
155 '''Return C{str(B{obj})} or C{repr(B{obj})}.
156 '''
157 return str(obj) if isint(obj) else next(
158 _streprs(prec, (obj,), Fmt.g, False, False, repr))
160 def INDEX(self, name=NN, i=None, **name_i):
161 '''Return C{"B{name}" if B{i} is None else "B{name}[B{i}]"}.
162 '''
163 if name_i:
164 name, i = _xkwds_item2(name_i)
165 return name if i is None else self.SQUARE(name, i)
167 def no_convergence(self, _d, *tol, **thresh):
168 '''Return C{"no convergence (B{_d})"}, C{"no convergence
169 (B{_d}), tolerance (B{tol})"} or C{"no convergence
170 (B{_d}), threshold (B{tol})"}.
171 '''
172 t = Fmt.convergence(fabs(_d))
173 if tol:
174 t = _COMMASPACE_(t, Fmt.tolerance(tol[0]))
175 if thresh and _xkwds_get(thresh, thresh=False):
176 t = t.replace(_tolerance_, _threshold_)
177 return _no_(t)
179 def repr_at(self, inst, text=NN):
180 '''Return a C{repr} string C{"<B{text} at B{hex_id}>"}.
181 '''
182 return self.ANGLE(_SPACE_((text or inst), _at_, hex(id(inst))))
184Fmt = Fmt() # PYCHOK singleton
185Fmt.__name__ = Fmt.__class__.__name__
187_DOTSTAR_ = Fmt.DOT(_STAR_)
188# formats %G and %g drop all trailing zeros and the
189# decimal point, making the float appear as an int
190_Gg = (Fmt.G, Fmt.g)
191_FfEeGg = (Fmt.F, Fmt.f, Fmt.E, Fmt.e) + _Gg # float formats
192_Fspec_ = NN('[%[<flags>][<width>]', _DOTSTAR_, ']', _BAR_.join(_FfEeGg)) # in testStreprs
195def anstr(name, OKd=_OKd_, sub=_UNDER_):
196 '''Make a valid name of alphanumeric and OKd characters.
198 @arg name: The original name (C{str}).
199 @kwarg OKd: Other acceptable characters (C{str}).
200 @kwarg sub: Substitute for invalid charactes (C{str}).
202 @return: The modified name (C{str}).
204 @note: Leading and trailing whitespace characters are removed,
205 intermediate whitespace characters are coalesced and
206 substituted.
207 '''
208 s = n = str(name).strip()
209 for c in n:
210 if not (c.isalnum() or c in OKd or c in sub):
211 s = s.replace(c, _SPACE_)
212 return sub.join(s.strip().split())
215def attrs(inst, *names, **Nones_True__pairs_kwds): # prec=6, fmt=Fmt.F, ints=False, Nones=True, sep=_EQUAL_
216 '''Get instance attributes as I{name=value} strings, with C{float}s
217 formatted by function L{fstr}.
219 @arg inst: The instance (any C{type}).
220 @arg names: The attribute names, all other positional (C{str}).
221 @kwarg Nones_True__pairs_kwds: Keyword argument for function L{pairs}, except
222 C{B{Nones}=True} to in-/exclude missing or C{None}-valued attributes.
224 @return: A C{tuple(B{sep}.join(t) for t in zip(B{names}, reprs(values, ...)))}
225 of C{str}s.
226 '''
227 def _items(inst, names, Nones):
228 for n in names:
229 v = getattr(inst, n, None)
230 if Nones or v is not None:
231 yield n, v
233 def _Nones_kwds(Nones=True, **kwds):
234 return Nones, kwds
236 Nones, kwds = _Nones_kwds(**Nones_True__pairs_kwds)
237 return pairs(_items(inst, names, Nones), **kwds)
240def enstr2(easting, northing, prec, *extras, **wide_dot):
241 '''Return an MGRS/OSGR easting, northing string representations.
243 @arg easting: Easting from false easting (C{meter}).
244 @arg northing: Northing from from false northing (C{meter}).
245 @arg prec: Precision, the number of I{decimal} digits (C{int}) or if
246 negative, the number of I{units to drop}, like MGRS U{PRECISION
247 <https://GeographicLib.SourceForge.io/C++/doc/GeoConvert.1.html#PRECISION>}.
248 @arg extras: Optional leading items (C{str}s).
249 @kwarg wide_dot: Optional keword argument C{B{wide}=%d} for the number of I{unit digits}
250 (C{int}) and C{B{dot}=False} (C{bool}) to insert a decimal point.
252 @return: B{C{extras}} + 2-tuple C{(str(B{easting}), str(B{northing}))} or
253 + 2-tuple C{("", "")} for C{B{prec} <= -B{wide}}.
255 @raise ValueError: Invalid B{C{easting}}, B{C{northing}} or B{C{prec}}.
257 @note: The B{C{easting}} and B{C{northing}} values are I{truncated, not rounded}.
258 '''
259 t = extras
260 try: # like .dms.compassPoint
261 p = min(int(prec), _EN_PREC)
262 w = p + _xkwds_get(wide_dot, wide=_EN_WIDE)
263 if w > 0:
264 f = 10**p # truncate
265 d = (-p) if p > 0 and _xkwds_get(wide_dot, dot=False) else 0
266 t += (_0wdot(w, int(easting * f), d),
267 _0wdot(w, int(northing * f), d))
268 else: # prec <= -_EN_WIDE
269 t += (NN, NN)
270 except (TypeError, ValueError) as x:
271 raise _ValueError(easting=easting, northing=northing, prec=prec, cause=x)
272 return t
274if enstr2.__doc__: # PYCHOK expected
275 enstr2.__doc__ %= (_EN_WIDE,)
278def _enstr2m3(estr, nstr, wide=_EN_WIDE): # in .mgrs, .osgr
279 '''(INTERNAL) Convert east- and northing C{str}s to meter and resolution.
280 '''
281 def _s2m2(s, m): # e or n str to float meter
282 if _DOT_ in s:
283 m = 1 # meter
284 else:
285 s += _0_ * wide
286 s = _DOT_(s[:wide], s[wide:wide+_EN_PREC])
287 return float(s), m
289 e, m = _s2m2(estr, 0)
290 n, m = _s2m2(nstr, m)
291 if not m:
292 p = max(len(estr), len(nstr)) # 2 = Km, 5 = m, 7 = cm
293 m = 10**max(-_EN_PREC, wide - p) # resolution, meter
294 return e, n, m
297def fstr(floats, prec=6, fmt=Fmt.F, ints=False, sep=_COMMASPACE_, strepr=None, force=True):
298 '''Convert one or more floats to string, optionally stripped of trailing zero decimals.
300 @arg floats: Single or a list, sequence, tuple, etc. (C{scalar}s).
301 @kwarg prec: The C{float} precision, number of decimal digits (0..9).
302 Trailing zero decimals are stripped if B{C{prec}} is
303 positive, but kept for negative B{C{prec}} values. In
304 addition, trailing decimal zeros are stripped for U{alternate,
305 form '#'<https://docs.Python.org/3/library/stdtypes.html
306 #printf-style-string-formatting>}.
307 @kwarg fmt: Optional C{float} format (C{letter}).
308 @kwarg ints: Optionally, remove the decimal dot for C{int} values (C{bool}).
309 @kwarg sep: Separator joining the B{C{floats}} (C{str}).
310 @kwarg strepr: Optional callable to format non-C{floats} (typically
311 C{repr}, C{str}) or C{None} to raise a TypeError and used
312 only if C{B{force} is not True}.
313 @kwarg force: If C{True} format all B{C{floats}} using B{C{fmt}},
314 otherwise use B{C{strepr}} for non-C{floats}.
316 @return: The C{sep.join(strs(floats, ...)} joined (C{str}) or single
317 C{strs((floats,), ...)} (C{str}) if B{C{floats}} is C{scalar}.
318 '''
319 if isscalar(floats): # see Fstr.__call__ above
320 return next(_streprs(prec, (floats,), fmt, ints, force, strepr))
321 else:
322 return sep.join(_streprs(prec, floats, fmt, ints, force, strepr))
325def _fstrENH2(inst, prec, m, fmt=Fmt.F): # in .css, .lcc, .utmupsBase
326 # (INTERNAL) For C{Css.} and C{Lcc.} C{toRepr} and C{toStr} and C{UtmUpsBase._toStr}.
327 t = inst.easting, inst.northing
328 t = tuple(_streprs(prec, t, fmt, False, True, None))
329 T = _E_, _N_
330 if m is not None and fabs(inst.height): # fabs(self.height) > EPS
331 t += hstr(inst.height, prec=-2, m=m),
332 T += _H_,
333 return t, T
336def _fstrLL0(inst, prec, toRepr): # in .azimuthal, .css
337 # (INTERNAL) For C{_AlbersBase.}, C{_AzimuthalBase.} and C{CassiniSoldner.}
338 t = tuple(_streprs(prec, inst.latlon0, Fmt.F, False, True, None))
339 if toRepr:
340 n = inst.name
341 if n:
342 t += Fmt.EQUAL(_name_, repr(n)),
343 t = Fmt.PAREN(inst.classname, _COMMASPACE_.join(t))
344 return t
347def fstrzs(efstr, ap1z=False):
348 '''Strip trailing zero decimals from a C{float} string.
350 @arg efstr: Float with or without exponent (C{str}).
351 @kwarg ap1z: Append the decimal point and one zero decimal
352 if the B{C{efstr}} is all digits (C{bool}).
354 @return: Float (C{str}).
355 '''
356 s = efstr.find(_DOT_)
357 if s >= 0:
358 e = efstr.rfind(Fmt.e)
359 if e < 0:
360 e = efstr.rfind(Fmt.E)
361 if e < 0:
362 e = len(efstr)
363 s += 2 # keep 1st _DOT_ + _0_
364 if s < e and efstr[e-1] == _0_:
365 efstr = NN(efstr[:s], efstr[s:e].rstrip(_0_), efstr[e:])
367 elif ap1z:
368 # %.G and %.g formats may drop the decimal
369 # point and all trailing zeros, ...
370 if efstr.isdigit():
371 efstr += _DOT_ + _0_ # ... append or ...
372 else: # ... insert one dot and zero
373 e = efstr.rfind(Fmt.e)
374 if e < 0:
375 e = efstr.rfind(Fmt.E)
376 if e > 0:
377 efstr = NN(efstr[:e], _DOT_, _0_, efstr[e:])
379 return efstr
382def hstr(height, prec=2, fmt=Fmt.h, ints=False, m=NN):
383 '''Return a string for the height value.
385 @arg height: Height value (C{float}).
386 @kwarg prec: The C{float} precision, number of decimal digits (0..9).
387 Trailing zero decimals are stripped if B{C{prec}} is
388 positive, but kept for negative B{C{prec}} values.
389 @kwarg fmt: Optional C{float} format (C{letter}).
390 @kwarg ints: Optionally, remove the decimal dot for C{int} values (C{bool}).
391 @kwarg m: Optional unit of the height (C{str}).
392 '''
393 h = next(_streprs(prec, (height,), fmt, ints, True, None))
394 return NN(h, str(m)) if m else h
397def instr(inst, *args, **kwds):
398 '''Return the string representation of an instantiation.
400 @arg inst: The instance (any C{type}).
401 @arg args: Optional positional arguments.
402 @kwarg kwds: Optional keyword arguments.
404 @return: Representation (C{str}).
405 '''
406 return unstr(_MODS.named.classname(inst), *args, **kwds)
409def lrstrip(txt, lrpairs=_LR_PAIRS):
410 '''Left- I{and} right-strip parentheses, brackets, etc. from a string.
412 @arg txt: String to be stripped (C{str}).
413 @kwarg lrpairs: Parentheses, etc. to remove (C{dict} of one or several
414 C{(Left, Right)} pairs).
416 @return: Stripped B{C{txt}} (C{str}).
417 '''
418 _e, _s, _n = str.endswith, str.startswith, len
419 while _n(txt) > 2:
420 for L, R in lrpairs.items():
421 if _e(txt, R) and _s(txt, L):
422 txt = txt[_n(L):-_n(R)]
423 break # restart
424 else:
425 return txt
428def pairs(items, prec=6, fmt=Fmt.F, ints=False, sep=_EQUAL_):
429 '''Convert items to I{name=value} strings, with C{float}s handled like L{fstr}.
431 @arg items: Name-value pairs (C{dict} or 2-{tuple}s of any C{type}s).
432 @kwarg prec: The C{float} precision, number of decimal digits (0..9).
433 Trailing zero decimals are stripped if B{C{prec}} is
434 positive, but kept for negative B{C{prec}} values.
435 @kwarg fmt: Optional C{float} format (C{letter}).
436 @kwarg ints: Optionally, remove the decimal dot for C{int} values (C{bool}).
437 @kwarg sep: Separator joining I{names} and I{values} (C{str}).
439 @return: A C{tuple(B{sep}.join(t) for t in B{items}))} of C{str}s.
440 '''
441 try:
442 if isinstance(items, dict):
443 items = itemsorted(items)
444 elif not islistuple(items):
445 items = tuple(items)
446 # can't unzip empty items tuple, list, etc.
447 n, v = _zip(*items) if items else ((), ()) # strict=True
448 except (TypeError, ValueError):
449 raise _IsnotError(dict.__name__, '2-tuples', items=items)
450 v = _streprs(prec, v, fmt, ints, False, repr)
451 return tuple(sep.join(t) for t in _zip(map(str, n), v)) # strict=True
454def _pct(fmt):
455 '''(INTERNAL) Prefix C{%} if needed.
456 '''
457 return fmt if _PERCENT_ in fmt else NN(_PERCENT_, fmt)
460def reprs(objs, prec=6, fmt=Fmt.F, ints=False):
461 '''Convert objects to C{repr} strings, with C{float}s handled like L{fstr}.
463 @arg objs: List, sequence, tuple, etc. (any C{type}s).
464 @kwarg prec: The C{float} precision, number of decimal digits (0..9).
465 Trailing zero decimals are stripped if B{C{prec}} is
466 positive, but kept for negative B{C{prec}} values.
467 @kwarg fmt: Optional C{float} format (C{letter}).
468 @kwarg ints: Optionally, remove the decimal dot for C{int} values (C{bool}).
470 @return: A C{tuple(map(fstr|repr, objs))} of C{str}s.
471 '''
472 return tuple(_streprs(prec, objs, fmt, ints, False, repr)) if objs else ()
475def _resolution10(resolution, Error=ValueError): # in .mgrs, .osgr
476 '''(INTERNAL) Validate C{resolution} in C{meter}.
477 '''
478 try:
479 r = int(_log10(resolution))
480 if _EN_WIDE < r or r < -_EN_PREC:
481 raise ValueError
482 except (ValueError, TypeError):
483 raise Error(resolution=resolution)
484 return _MODS.units.Meter(resolution=10**r)
487def _streprs(prec, objs, fmt, ints, force, strepr):
488 '''(INTERNAL) Helper for C{fstr}, C{pairs}, C{reprs} and C{strs}
489 '''
490 # <https://docs.Python.org/3/library/stdtypes.html#printf-style-string-formatting>
491 if fmt in _FfEeGg:
492 fGg = fmt in _Gg
493 fmt = NN(_PERCENT_, _DOT_, abs(prec), fmt)
495 elif fmt.startswith(_PERCENT_):
496 fGg = False
497 try: # to make sure fmt is valid
498 f = fmt.replace(_DOTSTAR_, Fmt.DOT(abs(prec)))
499 _ = f % (_0_0,)
500 except (TypeError, ValueError):
501 raise _ValueError(fmt=fmt, txt=_not_(repr(_DOTSTAR_)))
502 fmt = f
504 else:
505 raise _ValueError(fmt=fmt, txt=_not_(repr(_Fspec_)))
507 for i, o in enumerate(objs):
508 if force or isinstance(o, float):
509 t = fmt % (float(o),)
510 if ints and t.rstrip(_0to9_ if isint(o, both=True) else
511 _0_).endswith(_DOT_):
512 t = t.split(_DOT_)[0]
513 elif prec > 1:
514 t = fstrzs(t, ap1z=fGg)
515 elif strepr:
516 t = strepr(o)
517 else:
518 t = Fmt.PARENSPACED(Fmt.SQUARE(objs=i), o)
519 raise TypeError(_SPACE_(t, _not_scalar_))
520 yield t
523def strs(objs, prec=6, fmt=Fmt.F, ints=False):
524 '''Convert objects to C{str} strings, with C{float}s handled like L{fstr}.
526 @arg objs: List, sequence, tuple, etc. (any C{type}s).
527 @kwarg prec: The C{float} precision, number of decimal digits (0..9).
528 Trailing zero decimals are stripped if B{C{prec}} is
529 positive, but kept for negative B{C{prec}} values.
530 @kwarg fmt: Optional C{float} format (C{letter}).
531 @kwarg ints: Optionally, remove the decimal dot for C{int} values (C{bool}).
533 @return: A C{tuple(map(fstr|str, objs))} of C{str}s.
534 '''
535 return tuple(_streprs(prec, objs, fmt, ints, False, str)) if objs else ()
538def unstr(where, *args, **kwds):
539 '''Return the string representation of an invokation.
541 @arg where: Class, function, method (C{type}) or name (C{str}).
542 @arg args: Optional positional arguments.
543 @kwarg kwds: Optional keyword arguments, except C{B{_fmt}=Fmt.g}
544 and C{B{_ELLIPSIS}=False}.
546 @return: Representation (C{str}).
547 '''
548 e, kwds = _xkwds_pop2(kwds, _ELLIPSIS=False)
549 g, kwds = _xkwds_pop2(kwds, _fmt=Fmt.g)
550 t = reprs(args, fmt=g) if args else ()
551 if e:
552 t += _ELLIPSIS_,
553 if kwds:
554 t += pairs(itemsorted(kwds), fmt=g)
555 n = where if isstr(where) else _dunder_nameof(where) # _NN_
556 return Fmt.PAREN(n, _COMMASPACE_.join(t))
559def _0wd(*w_i): # in .osgr, .wgrs
560 '''(INTERNAL) Int formatter'.
561 '''
562 return '%0*d' % w_i
565def _0wdot(w, f, dot=0):
566 '''(INTERNAL) Int and Float formatter'.
567 '''
568 s = _0wd(w, int(f))
569 if dot:
570 s = _DOT_(s[:dot], s[dot:])
571 return s
574def _0wpF(*w_p_f): # in .dms, .osgr
575 '''(INTERNAL) Float deg, min, sec formatter'.
576 '''
577 return '%0*.*f' % w_p_f # XXX was F
580def _xattrs(insto, other, *attrs): # see .errors._xattr
581 '''(INTERNAL) Copy attribute values from B{C{other}} to B{C{insto}}.
583 @arg insto: Object to copy attribute values to (any C{type}).
584 @arg other: Object to copy attribute values from (any C{type}).
585 @arg attrs: One or more attribute names (C{str}s).
587 @return: Object B{C{insto}}, updated.
589 @raise AttributeError: An B{C{attrs}} doesn't exist
590 or is not settable.
591 '''
592 def _getattr(o, a):
593 if hasattr(o, a):
594 return getattr(o, a)
595 try:
596 n = o._DOT_(a)
597 except AttributeError:
598 n = Fmt.DOT(a)
599 raise _AttributeError(o, name=n)
601 for a in attrs:
602 s = _getattr(other, a)
603 g = _getattr(insto, a)
604 if (g is None and s is not None) or g != s:
605 setattr(insto, a, s) # not settable?
606 return insto
609def _xzipairs(names, values, sep=_COMMASPACE_, fmt=NN, pair_fmt=Fmt.COLON):
610 '''(INTERNAL) Zip C{names} and C{values} into a C{str}, joined and bracketed.
611 '''
612 try:
613 t = sep.join(pair_fmt(*t) for t in _zip(names, values)) # strict=True
614 except Exception as x:
615 raise _ValueError(names=names, values=values, cause=x)
616 return (fmt % (t,)) if fmt else t # enc
618# **) MIT License
619#
620# Copyright (C) 2016-2024 -- mrJean1 at Gmail -- All Rights Reserved.
621#
622# Permission is hereby granted, free of charge, to any person obtaining a
623# copy of this software and associated documentation files (the "Software"),
624# to deal in the Software without restriction, including without limitation
625# the rights to use, copy, modify, merge, publish, distribute, sublicense,
626# and/or sell copies of the Software, and to permit persons to whom the
627# Software is furnished to do so, subject to the following conditions:
628#
629# The above copyright notice and this permission notice shall be included
630# in all copies or substantial portions of the Software.
631#
632# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
633# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
634# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
635# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
636# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
637# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
638# OTHER DEALINGS IN THE SOFTWARE.