# Coverage for pygeodesy/streprs.py : 97%

## 202 statements 196 run 6 missing 14 excluded

Hot-keys on this page

r m x p toggle line displays

j k next/prev highlighted chunk

0 (zero) top of page

1 (one) first highlighted chunk

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 | # -*- coding: utf-8 -*- u'''Floating point and other formatting utilities. ''' from pygeodesy.basics import isint, isscalar from pygeodesy.errors import _AttributeError, _IsnotError, _TypeError, \ _ValueError, _xkwds_pop from pygeodesy.interns import NN, MISSING, _BAR_, _COMMASPACE_, _DOT_, \ _E_, _EQUAL_, _H_, _N_, _name_, _not_, \ _PERCENT_, _OKd_, _scalar_, _SPACE_, _STAR_, \ _UNDER_, _0_, _0_0, _0_001, _0_01, _0_1, _1_0 from pygeodesy.interns import _convergence_, _distant_, _e_, _EPS0_, \ _EQUALSPACED_, _exceeds_, _f_, _g_ # PYCHOK used! from pygeodesy.lazily import _ALL_LAZY __all__ = _ALL_LAZY.streprs __version__ = '21.06.27' _E_4_E0 = (1e-4, _0_001, _0_01, _0_1, _1_0) def _0wd(*w_i): # in .osgr, .wgrs '''(INTERNAL) Int formatter'. ''' return '%0*d' % w_i def _0wpF(*w_p_f): # in .dms, .osgr '''(INTERNAL) Float deg, min, sec formatter'. ''' return '%0*.*f' % w_p_f # XXX was F class _Fmt(str): # in .streprs '''(INTERNAL) Callable formatting. ''' name = NN def __call__(self, *name_value_, **name_value): '''Format a C{name=value} pair or C{name, value} pair or just a single C{value}. ''' for n, v in name_value.items(): break else: if len(name_value_) > 1: n, v = name_value_[:2] elif name_value_: n, v = NN, name_value_[0] else: n, v = NN, MISSING t = str.__mod__(self, v) return NN(n, t) if n else t # def __mod__(self, arg, **unused): # '''Regular C{%} operator. # ''' # return str.__mod__(self, arg) class Fstr(str): '''(INTERNAL) C{float} format. ''' name = NN def __call__(self, flt, prec=None, ints=False): '''Format the B{C{flt}} like function L{fstr}. ''' return str.__mod__(self, flt) if prec is None else \ next(_streprs(prec, (flt,), self, ints, True, None)) # PYCHOK see function C{fstr} if isscalar case below def __mod__(self, arg, **unused): '''Regular C{%} operator. @arg arg: A C{scalar} value to be formatted (either the C{scalar}, or a 1-tuple C{(scalar,)}, or 2-tuple C{(prec, scalar)}. @raise TypeError: Non-scalar B{C{arg}} value. @raise ValueError: Invalid B{C{arg}}. ''' def _error(arg): n = _DOT_(Fstr.__name__, self.name or self) return _SPACE_(n, _PERCENT_, repr(arg)) prec = 6 # default std %f and %F if isinstance(arg, (tuple, list)): n = len(arg) if n == 1: arg = arg[0] elif n == 2: prec, arg = arg else: raise _ValueError(_error(arg)) if not isscalar(arg): raise _TypeError(_error(arg)) return self(arg, prec=prec) class Fmt(object): '''Formatting options. ''' ANGLE = _Fmt('<%s>') COLON = _Fmt(':%s') # COLONSPACE = _Fmt(': %s') # == _COLONSPACE_(n, v) # COMMASPACE = _Fmt(', %s') # == _COMMASPACE_(n, v) convergence = _Fmt(_convergence_('(%g)')) CURLY = _Fmt('{%s}') # BRACES distant = _Fmt(_distant_('(%.3g)')) DOT = _Fmt('.%s') # == NN(_DOT_, n) e = Fstr(_e_) E = Fstr(_E_) EPS0 = _Fmt(_SPACE_(_EPS0_, '(%g)')) EQUAL = _Fmt(_EQUAL_(NN, '%s')) EQUALSPACED = _Fmt(_EQUALSPACED_(NN, '%s')) exceeds_eps = _Fmt(_exceeds_('eps', '(%g)')) f = Fstr(_f_) F = Fstr('F') g = Fstr(_g_) G = Fstr('G') h = Fstr('%+.*f') # height, .streprs.hstr limit = _Fmt(' %s limit') # .units LOPEN = _Fmt('(%s]') # left-open range (L, R] PAREN = _Fmt('(%s)') QUOTE2 = _Fmt('"%s"') ROPEN = _Fmt('[%s)') # right-open range [L, R) # SPACE = _Fmt(' %s') # == _SPACE_(n, v) SQUARE = _Fmt('[%s]') # BRACKETS TAG = ANGLE TAGEND = _Fmt('</%s>') zone = _Fmt('%02d') # .epsg, .mgrs, .utmupsBase def __init__(self): for n, a in self.__class__.__dict__.items(): if isinstance(a, (Fstr, _Fmt)): setattr(a, _name_, n) Fmt = Fmt() # PYCHOK singleton Fmt.__name__ = Fmt.__class__.__name__ _DOTSTAR_ = Fmt.DOT(_STAR_) # formats %G and %g drop all trailing zeros and the # decimal point, making the float appear as an int _Gg = (Fmt.G, Fmt.g) _FfEeGg = (Fmt.F, Fmt.f, Fmt.E, Fmt.e) + _Gg # float formats _Fspec_ = NN('[%[<flags>][<width>]', _DOTSTAR_, ']', _BAR_.join(_FfEeGg)) # in testStreprs def _streprs(prec, objs, fmt, ints, force, strepr): '''(INTERNAL) Helper for C{fstr}, C{pairs}, C{reprs} and C{strs} ''' # <https://docs.Python.org/3/library/stdtypes.html#printf-style-string-formatting> if fmt in _FfEeGg: fGg = fmt in _Gg fmt = NN(_PERCENT_, _DOT_, abs(prec), fmt) elif fmt.startswith(_PERCENT_): fGg = False try: # to make sure fmt is valid f = fmt.replace(_DOTSTAR_, Fmt.DOT(abs(prec))) _ = f % (_0_0,) except (TypeError, ValueError): raise _ValueError(fmt=fmt, txt=_not_(repr(_DOTSTAR_))) fmt = f else: raise _ValueError(fmt=fmt, txt=_not_(repr(_Fspec_))) for o in objs: if force or isinstance(o, float): t = fmt % (float(o),) if ints and (isint(o, both=True) or # for ... # corner case testLcc lon0=-96.0 t.rstrip(_0_).endswith(_DOT_)): t = t.split(_DOT_)[0] elif prec > 1: t = fstrzs(t, ap1z=fGg) elif strepr: t = strepr(o) else: raise _IsnotError(_scalar_, floats=o) yield t def anstr(name, OKd=_OKd_, sub=_UNDER_): '''Make a valid name of alphanumeric and OKd characters. @arg name: The original name (C{str}). @kwarg OKd: Other acceptable characters (C{str}). @kwarg sub: Substitute for invalid charactes (C{str}). @return: The modified name (C{str}). @note: Leading and trailing whitespace characters are removed, intermediate whitespace characters are coalesced and substituted. ''' s = n = str(name).strip() for c in n: if not (c.isalnum() or c in OKd or c in sub): s = s.replace(c, _SPACE_) return sub.join(s.strip().split()) def attrs(inst, *names, **pairs_kwds): # prec=6, fmt=Fmt.F, ints=False, Nones=True, sep=_EQUAL_ '''Get instance attributes as I{name=value} strings, with C{float}s formatted by function L{fstr}. @arg inst: The instance (any C{type}). @arg names: The attribute names (C{str}s). @kwarg pairs_kwds: Keyword argument for function L{pairs}, except C{B{Nones}=True} to in- or exclude missing or or C{None}-valued attributes. @return: A C{tuple(sep.join(t) for t in zip(names, reprs(values, ...)))} of C{str}s. ''' Nones = _xkwds_pop(pairs_kwds, Nones=True) def items(): for n in names: v = getattr(inst, n, None) if Nones or v is not None: yield n, v return pairs(items(), **pairs_kwds) def enstr2(easting, northing, prec, *extras): '''Return easting, northing string representations. @arg easting: Easting from false easting (C{meter}). @arg northing: Northing from from false northing (C{meter}). @arg prec: Precision in number of digits (C{int}, [1..5]). @arg extras: Optional leading items (C{str}s). @return: B{C{extras}} + 2-Tuple C{(eastingStr, northingStr)}. @raise ValueError: Invalid B{C{prec}}. ''' w = int(prec) // 2 if not 0 < w < 6: raise _ValueError(prec=prec) p = _E_4_E0[w - 1] # 10**(5 - w) return extras + (_0wd(w, int(easting * p)), _0wd(w, int(northing * p))) def fstr(floats, prec=6, fmt=Fmt.F, ints=False, sep=_COMMASPACE_, strepr=None): '''Convert one or more floats to string, optionally stripped of trailing zero decimals. @arg floats: Single or a list, sequence, tuple, etc. (C{scalar}s). @kwarg prec: The C{float} precision, number of decimal digits (0..9). Trailing zero decimals are stripped if B{C{prec}} is positive, but kept for negative B{C{prec}} values. In addition, trailing decimal zeros are stripped for U{alternate, form '#'<https://docs.Python.org/3/library/stdtypes.html #printf-style-string-formatting>}. @kwarg fmt: Optional, C{float} format (C{str}). @kwarg ints: Optionally, remove the decimal dot for C{int} values (C{bool}). @kwarg sep: Separator joining the B{C{floats}} (C{str}). @kwarg strepr: Optional callable to format non-C{floats} (typically C{repr}, C{str}) or C{None} to raise a TypeError. @return: The C{sep.join(strs(floats, ...)} joined (C{str}) or single C{strs((floats,), ...)} (C{str}) if B{C{floats}} is C{scalar}. ''' if isscalar(floats): # see Fstr.__call__ above return next(_streprs(prec, (floats,), fmt, ints, True, strepr)) else: return sep.join(_streprs(prec, floats, fmt, ints, True, strepr)) def _fstrENH2(inst, prec, m): # in .css, .lcc, .utmupsBase # (INTERNAL) For C{Css.} and C{Lcc.} C{toRepr} and C{toStr} and C{UtmUpsBase._toStr}. t = inst.easting, inst.northing t = tuple(_streprs(prec, t, Fmt.F, False, True, None)) T = _E_, _N_ if m is not None and abs(inst.height): # abs(self.height) > EPS t += hstr(inst.height, prec=-2, m=m), T += _H_, return t, T def _fstrLL0(inst, prec, toRepr): # in .azimuthal, .css # (INTERNAL) For C{_AzimuthalBase.} and C{CassiniSoldner.} C{toStr} and C{toRepr}. t = tuple(_streprs(prec, inst.latlon0, Fmt.F, False, True, None)) if toRepr: n = inst.name if n: t += Fmt.EQUAL(_name_, repr(n)), t = Fmt.PAREN(inst.classname, _COMMASPACE_.join(t)) return t def fstrzs(efstr, ap1z=False): '''Strip trailing zero decimals from a C{float} string. @arg efstr: Float with or without exponent (C{str}). @kwarg ap1z: Append the decimal point and one zero decimal if the B{C{efstr}} is all digits (C{bool}). @return: Float (C{str}). ''' s = efstr.find(_DOT_) if s >= 0: e = efstr.rfind(Fmt.e) if e < 0: e = efstr.rfind(Fmt.E) if e < 0: e = len(efstr) s += 2 # keep 1st _DOT_ + _0_ if s < e and efstr[e-1] == _0_: efstr = NN(efstr[:s], efstr[s: e].rstrip(_0_), efstr[e:]) elif ap1z: # %.G and %.g formats may drop the decimal # point and all trailing zeros, ... if efstr.isdigit(): efstr += _DOT_ + _0_ # ... append or ... else: # ... insert one dot and zero e = efstr.rfind(Fmt.e) if e < 0: e = efstr.rfind(Fmt.E) if e > 0: efstr = NN(efstr[:e], _DOT_, _0_, efstr[e:]) return efstr def hstr(height, prec=2, fmt=Fmt.h, ints=False, m=NN): '''Return a string for the height value. @arg height: Height value (C{float}). @kwarg prec: The C{float} precision, number of decimal digits (0..9). Trailing zero decimals are stripped if B{C{prec}} is positive, but kept for negative B{C{prec}} values. @kwarg fmt: Optional, C{float} format (C{str}). @kwarg ints: Optionally, remove the decimal dot for C{int} values (C{bool}). @kwarg m: Optional unit of the height (C{str}). ''' h = next(_streprs(prec, (height,), fmt, ints, True, None)) return NN(h, str(m)) if m else h def instr(inst, *args, **kwds): '''Return the string representation of an instantiation. @arg inst: The instance (any C{type}). @arg args: Optional positional arguments. @kwarg kwds: Optional keyword arguments. @return: Representation (C{str}). ''' from pygeodesy.named import classname return unstr(classname(inst), *args, **kwds) def pairs(items, prec=6, fmt=Fmt.F, ints=False, sep=_EQUAL_): '''Convert items to I{name=value} strings, with C{float}s handled like L{fstr}. @arg items: Name-value pairs (C{dict} or 2-{tuple}s of any C{type}s). @kwarg prec: The C{float} precision, number of decimal digits (0..9). Trailing zero decimals are stripped if B{C{prec}} is positive, but kept for negative B{C{prec}} values. @kwarg fmt: Optional, C{float} format (C{str}). @kwarg ints: Optionally, remove the decimal dot for C{int} values (C{bool}). @kwarg sep: Separator joining I{names} and I{values} (C{str}). @return: A C{tuple(sep.join(t) for t in zip(names, reprs(values,...)))} of C{str}s. ''' try: if isinstance(items, dict): items = sorted(items.items()) elif not isinstance(items, (list, tuple)): items = tuple(items) # can't unzip empty items tuple, list, etc. n, v = zip(*items) if items else ((), ()) except (TypeError, ValueError): raise _IsnotError(dict.__name__, '2-tuples', items=items) v = _streprs(prec, v, fmt, ints, False, repr) return tuple(sep.join(t) for t in zip(map(str, n), v)) def reprs(objs, prec=6, fmt=Fmt.F, ints=False): '''Convert objects to C{repr} strings, with C{float}s handled like L{fstr}. @arg objs: List, sequence, tuple, etc. (any C{type}s). @kwarg prec: The C{float} precision, number of decimal digits (0..9). Trailing zero decimals are stripped if B{C{prec}} is positive, but kept for negative B{C{prec}} values. @kwarg fmt: Optional, C{float} format (C{str}). @kwarg ints: Optionally, remove the decimal dot for C{int} values (C{bool}). @return: A C{tuple(map(fstr|repr, objs))} of C{str}s. ''' return tuple(_streprs(prec, objs, fmt, ints, False, repr)) if objs else () def strs(objs, prec=6, fmt=Fmt.F, ints=False): '''Convert objects to C{str} strings, with C{float}s handled like L{fstr}. @arg objs: List, sequence, tuple, etc. (any C{type}s). @kwarg prec: The C{float} precision, number of decimal digits (0..9). Trailing zero decimals are stripped if B{C{prec}} is positive, but kept for negative B{C{prec}} values. @kwarg fmt: Optional, C{float} format (C{str}). @kwarg ints: Optionally, remove the decimal dot for C{int} values (C{bool}). @return: A C{tuple(map(fstr|str, objs))} of C{str}s. ''' return tuple(_streprs(prec, objs, fmt, ints, False, str)) if objs else () def unstr(named, *args, **kwds): '''Return the string representation of an invokation. @arg named: Function, method or class name (C{str}). @arg args: Optional positional arguments. @kwarg kwds: Optional keyword arguments. @return: Representation (C{str}). ''' t = reprs(args, fmt=Fmt.g) + pairs(sorted(kwds.items())) return Fmt.PAREN(named, _COMMASPACE_.join(t)) def _boolkwds(inst, **name_value_pairs): # in .frechet, .hausdorff, .heights '''(INTERNAL) Set applicable C{bool} properties/attributes. ''' for n, v in name_value_pairs.items(): b = getattr(inst, n, None) if b is None: # invalid bool attr t = _SPACE_(_EQUAL_(n, repr(v)), 'for', inst.__class__.__name__) # XXX .classname raise _AttributeError(t, txt=_not_('applicable')) if v in (False, True) and v != b: setattr(inst, NN(_UNDER_, n), v) def _xattrs(insto, other, *attrs): '''(INTERNAL) Copy attribute values from B{C{other}} to B{C{insto}}. @arg insto: Object to copy attribute values to (any C{type}). @arg other: Object to copy attribute values from (any C{type}). @arg attrs: One or more attribute names (C{str}s). @return: Object B{C{insto}}, updated. @raise AttributeError: An B{C{attrs}} doesn't exist or is not settable. ''' def _getattr(o, a): if hasattr(o, a): return getattr(o, a) try: n = o._DOT_(a) except AttributeError: n = Fmt.DOT(a) raise _AttributeError(o, name=n) for a in attrs: s = _getattr(other, a) g = _getattr(insto, a) if (g is None and s is not None) or g != s: setattr(insto, a, s) # not settable? return insto def _xzipairs(lefts, rights, sep=_COMMASPACE_, fmt=NN, pair_fmt=Fmt.COLON): '''(INTERNAL) Zip C{lefts} and C{rights} into a C{str}. ''' t = sep.join(pair_fmt(*t) for t in zip(lefts, rights)) return (fmt % (t,)) if fmt else t # **) MIT License # # Copyright (C) 2016-2021 -- mrJean1 at Gmail -- All Rights Reserved. # # Permission is hereby granted, free of charge, to any person obtaining a # copy of this software and associated documentation files (the "Software"), # to deal in the Software without restriction, including without limitation # the rights to use, copy, modify, merge, publish, distribute, sublicense, # and/or sell copies of the Software, and to permit persons to whom the # Software is furnished to do so, subject to the following conditions: # # The above copyright notice and this permission notice shall be included # in all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS # OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL # THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR # OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, # ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR # OTHER DEALINGS IN THE SOFTWARE.