Coverage for pygeodesy/interns.py: 88%

430 statements  

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1# -*- coding: utf-8 -*- 

2 

3u'''Single C{str}ing constants, C{intern}'ed across C{pygeodesy} 

4modules and function L{pygeodesy.machine}. 

5''' 

6_COMMASPACE_ = ', ' # overriden below 

7_pl2List = None # cached _platform2 lists 

8_Py3List = None # cached _pythonarchine lists 

9 

10 

11class _Dash(str): 

12 '''(INTERNAL) Extended C{str} for prefix_DASH_. 

13 ''' 

14 def __call__(self, *args): 

15 '''Join C{self} plus all B{C{args}} like C{'-'.join((self,) + B{args})}. 

16 ''' 

17 return _DASH_(self, *args) # re-callable 

18 

19 

20class _Int(int): 

21 '''(INTERNAL) Unique C{int}. 

22 ''' 

23 pass 

24 

25 

26class Str_(str): 

27 '''Extended, I{callable} C{str} class, not nameable. 

28 

29 @see: Nameable and callable class L{pygeodesy.Str}. 

30 ''' 

31 def join_(self, *args): 

32 '''Join all positional B{C{args}} like C{self.join(B{args})}. 

33 

34 @return: All B{C{args}} joined by this instance (L{Str_}). 

35 

36 @note: An other L{Str_} instance is returned to make the 

37 result re-callable. 

38 ''' 

39 return Str_(str.join(self, map(str, args))) # re-callable 

40 

41 __call__ = join_ 

42 

43 

44class _Prefix(Str_): 

45 '''(INTERNAL) Extended C{str} for prefix. 

46 ''' 

47 def __call__(self, *args): 

48 '''Join C{self} plus all B{C{args}} like C{" ".join((self,) + B{args})}. 

49 ''' 

50 return _SPACE_.join_(self, *args) # re-callable 

51 

52 

53class _Python_(str): # overwritten by singleton below 

54 '''(INTERNAL) Extended C{str} for C{"Python"} and version. 

55 ''' 

56 def __call__(self, version=None): 

57 '''Return C{"Python <version>"}. 

58 ''' 

59 if not version: 

60 from sys import version 

61 return _SPACE_(self, version.split(None, 1)[0]) 

62 

63 

64class _Range(str): 

65 '''(INTERNAL) Extended C{str} for C{range} strings. 

66 ''' 

67 def __call__(self, lo, hi, lopen=False, ropen=False, 

68 prec=0, sep=_COMMASPACE_): 

69 '''Return the range as C{"(lo, hi)"}, C{"(lo, hi]"}, 

70 C{"[lo, hi)"} or C{"[lo, hi]"}. 

71 ''' 

72 from pygeodesy.streprs import Fmt 

73 r = NN(Fmt.f(lo, prec=prec), sep, 

74 Fmt.f(hi, prec=prec)) 

75 if lopen: 

76 r = Fmt.PAREN(r) if ropen else Fmt.LOPEN(r) 

77 else: 

78 r = Fmt.ROPEN(r) if ropen else Fmt.SQUARE(r) 

79 return r 

80 

81 

82class _Slicer(str): 

83 '''(INTERNAL) String slicer C{.fromX} or C{.tillY}. 

84 ''' 

85 def __getattr__(self, name): # .fromX, .tillY 

86 if name.startswith(_till_): 

87 i = self.find(name[len(_till_):]) 

88 if 0 < i < len(self): 

89 return _Slicer(self[:i + 1]) 

90 elif name.startswith(_from_): 

91 i = self.find(name[len(_from_):]) 

92 if 0 < (i + 1) < len(self): 

93 return _Slicer(self[i:]) 

94 else: 

95 return getattr(str, name) 

96 return self 

97 

98 

99class MISSING(object): 

100 '''(INTERNAL) Singleton C{str}. 

101 ''' 

102 def toRepr(self, **unused): 

103 return self.__class__.__name__ 

104 

105 __repr__ = toRepr 

106 __str__ = toRepr 

107 toStr = toRepr 

108 

109MISSING = MISSING() # PYCHOK singleton 

110MISSING.__name__ = str(MISSING) 

111 

112NN = Str_('') # Nomen Nescio <https://Wiktionary.org/wiki/N.N.> 

113 

114# __DUNDER__-style names would get mangled in classes 

115_0_ = '0' # PYCHOK 'zero' 

116_0to9_ = '0123456789' # PYCHOK OK 

117_1_ = '1' # PYCHOK OK 

118_2_ = '2' # PYCHOK OK 

119_3_ = '3' # PYCHOK OK 

120_4_ = '4' # PYCHOK OK 

121_a_ = 'a' # PYCHOK OK 

122_A_ = 'A' # PYCHOK OK 

123_a12_ = 'a12' # PYCHOK OK 

124_area_ = 'area' # PYCHOK OK 

125_Airy1830_ = 'Airy1830' # PYCHOK OK 

126_AiryModified_ = 'AiryModified' # PYCHOK OK 

127_ambiguous_ = 'ambiguous' # PYCHOK OK 

128_AMPERSAND_ = Str_('&') # PYCHOK OK 

129_an_ = 'an' # PYCHOK OK 

130_and_ = 'and' # PYCHOK OK 

131# _AND_ = _AMPERSAND_ # PYCHOK OK 

132_angle_ = 'angle' # PYCHOK OK 

133_antipodal_ = 'antipodal' # PYCHOK OK 

134_areaOf_ = 'areaOf' # PYCHOK OK 

135_arg_ = 'arg' # PYCHOK OK 

136_at_ = 'at' # PYCHOK OK 

137_AT_ = Str_('@') # PYCHOK OK 

138_AtoZnoIO_ = _Slicer('ABCDEFGHJKLMNPQRSTUVWXYZ') # PYCHOK in C{gars}, C{mgrs} and C{wgrs} 

139_attribute_ = 'attribute' # PYCHOK OK 

140_azi1_ = 'azi1' # PYCHOK OK 

141_azi12_ = 'azi12' # PYCHOK OK 

142_azi2_ = 'azi2' # PYCHOK OK 

143_azimuth_ = 'azimuth' # PYCHOK OK 

144_b_ = 'b' # PYCHOK OK 

145_B_ = 'B' # PYCHOK OK 

146_BACKSLASH_ = Str_('\\') # PYCHOK OK 

147_band_ = 'band' # PYCHOK OK 

148_BANG_ = Str_('!') # PYCHOK OK 

149_BAR_ = Str_('|') # PYCHOK OK 

150_bearing_ = 'bearing' # PYCHOK OK 

151_Bessel1841_ = 'Bessel1841' # PYCHOK OK 

152_beta_ = 'beta' # PYCHOK OK 

153_by_ = 'by' # PYCHOK OK 

154_c_ = 'c' # PYCHOK OK 

155_C_ = 'C' # PYCHOK OK 

156_cartesian_ = 'cartesian' # PYCHOK OK 

157_center_ = 'center' # PYCHOK OK 

158# _CIRCUMFLEX_ = '^' # PYCHOK OK 

159_Clarke1866_ = 'Clarke1866' # PYCHOK OK 

160_Clarke1880IGN_ = 'Clarke1880IGN' # PYCHOK OK 

161_clip_ = 'clip' # PYCHOK OK 

162_clipid_ = 'clipid' # PYCHOK OK 

163_coincident_ = 'coincident' # PYCHOK OK 

164_colinear_ = 'colinear' # PYCHOK OK 

165_COLON_ = Str_(':') # PYCHOK OK 

166_COLONSPACE_ = Str_(': ') # PYCHOK OK 

167_COMMA_ = Str_(',') # PYCHOK OK 

168_COMMASPACE_ = Str_(_COMMASPACE_) # PYCHOK OK 

169_composite_ = 'composite' # PYCHOK OK 

170_concentric_ = 'concentric' # PYCHOK OK 

171_convergence_ = _Prefix('convergence') # PYCHOK OK 

172_conversion_ = 'conversion' # PYCHOK OK 

173_convex_ = 'convex' # PYCHOK OK 

174_cubic_ = 'cubic' # PYCHOK OK 

175_d_ = 'd' # PYCHOK OK 

176_D_ = 'D' # PYCHOK OK 

177_DASH_ = Str_('-') # PYCHOK == _MINUS_ 

178_datum_ = 'datum' # PYCHOK OK 

179_decode3_ = 'decode3' # PYCHOK OK 

180_deg_ = 'deg' # PYCHOK OK 

181_degrees_ = 'degrees' # PYCHOK OK 

182_degrees2_ = 'degrees2' # PYCHOK SQUARED 

183_DEPRECATED_ = 'DEPRECATED' # PYCHOK OK 

184_DEQUALSPACED_ = Str_(' == ') # PYCHOK OK 

185_distance_ = 'distance' # PYCHOK OK 

186_distanceTo_ = 'distanceTo' # PYCHOK OK 

187_distant_ = _Prefix('distant') # PYCHOK OK 

188_doesn_t_exist_ = "doesn't exist" # PYCHOK OK 

189_DOT_ = Str_('.') # PYCHOK OK 

190_down_ = 'down' # PYCHOK OK 

191_e_ = 'e' # PYCHOK OK 

192_E_ = 'E' # PYCHOK OK 

193_east_ = 'east' # PYCHOK OK 

194_easting_ = 'easting' # PYCHOK OK 

195_ecef_ = 'ecef' # PYCHOK OK 

196_edge_ = 'edge' # PYCHOK OK 

197_elevation_ = 'elevation' # PYCHOK OK 

198_ELLIPSIS_ = Str_('...') # PYCHOK OK 

199_ELLIPSIS4_ = Str_('....') # PYCHOK OK 

200# _ELLIPSISPACED_ = Str_(' ... ') # PYCHOK <https://www.ThePunctuationGuide.com/ellipses.html> 

201_ellipsoid_ = 'ellipsoid' # PYCHOK OK 

202_ellipsoidal_ = 'ellipsoidal' # PYCHOK OK 

203_enabled_ = 'enabled' # PYCHOK OK 

204_encode_ = 'encode' # PYCHOK OK 

205_end_ = 'end' # PYCHOK OK 

206_epoch_ = 'epoch' # PYCHOK OK 

207_EQUAL_ = Str_('=') # PYCHOK OK 

208_EQUALSPACED_ = Str_(' = ') # PYCHOK OK 

209_Error_ = 'Error' # PYCHOK OK 

210_exceed_PI_radians_ = 'exceed PI radians' # PYCHOK OK 

211_exceeds_ = _Prefix('exceeds') # PYCHOK OK 

212# _EXCLAMATION_ = _BANG_ # PYCHOK OK 

213_exists_ = 'exists' # PYCHOK OK 

214_f_ = 'f' # PYCHOK OK 

215_F_ = 'F' # PYCHOK OK 

216_feet_ = 'feet' # PYCHOK OK 

217_few_ = 'few' # PYCHOK OK 

218_fi_ = 'fi' # PYCHOK OK 

219_finite_ = 'finite' # PYCHOK OK 

220_from_ = 'from' # PYCHOK OK 

221_g_ = 'g' # PYCHOK OK 

222_gamma_ = 'gamma' # PYCHOK OK 

223_GRS80_ = 'GRS80' # PYCHOK OK 

224_h_ = 'h' # PYCHOK OK 

225_H_ = 'H' # PYCHOK OK 

226_height_ = 'height' # PYCHOK OK 

227_hemipole_ = 'hemipole' # PYCHOK OK 

228_i_ = 'i' # PYCHOK OK 

229_iadd_ = '+=' # PYCHOK OK 

230_immutable_ = 'immutable' # PYCHOK OK 

231_in_ = 'in' # PYCHOK OK 

232_incompatible_ = 'incompatible' # PYCHOK OK 

233_INF_ = 'INF' # PYCHOK OK 

234_infinite_ = 'infinite' # PYCHOK _not_finite_ 

235_initial_ = 'initial' # PYCHOK OK 

236_inside_ = 'inside' # PYCHOK OK 

237_intersection_ = 'intersection' # PYCHOK OK 

238_Intl1924_ = 'Intl1924' # PYCHOK OK 

239_invalid_ = 'invalid' # PYCHOK OK 

240_isclockwise_ = 'isclockwise' # PYCHOK OK 

241_ispolar_ = 'ispolar' # PYCHOK OK 

242_j_ = 'j' # PYCHOK OK 

243_k0_ = 'k0' # PYCHOK OK 

244_kind_ = 'kind' # PYCHOK OK 

245_knots_ = 'knots' # PYCHOK OK 

246_Krassovski1940_ = 'Krassovski1940' # PYCHOK OK 

247_Krassowsky1940_ = 'Krassowsky1940' # PYCHOK OK 

248_LANGLE_ = '<' # PYCHOK OK 

249_lam_ = 'lam' # PYCHOK OK 

250_lat_ = 'lat' # PYCHOK OK 

251_lat0_ = 'lat0' # PYCHOK OK 

252_lat1_ = 'lat1' # PYCHOK OK 

253_lat2_ = 'lat2' # PYCHOK OK 

254_latlon_ = 'latlon' # PYCHOK OK 

255_LatLon_ = 'LatLon' # PYCHOK OK 

256_LCURLY_ = '{' # PYCHOK LBRACE 

257_len_ = 'len' # PYCHOK OK 

258_line_ = 'line' # PYCHOK OK 

259_linear_ = 'linear' # PYCHOK OK 

260_LPAREN_ = '(' # PYCHOK OK 

261_lon_ = 'lon' # PYCHOK OK 

262_lon0_ = 'lon0' # PYCHOK OK 

263_lon1_ = 'lon1' # PYCHOK OK 

264_lon2_ = 'lon2' # PYCHOK OK 

265_LSQUARE_ = '[' # PYCHOK LBRACK 

266_ltp_ = 'ltp' # PYCHOK OK 

267_m_ = 'm' # PYCHOK OK 

268_M_ = 'M' # PYCHOK OK 

269_m12_ = 'm12' # PYCHOK OK 

270_M12_ = 'M12' # PYCHOK OK 

271_M21_ = 'M21' # PYCHOK OK 

272_MANT_DIG_ = 'MANT_DIG' # PYCHOK OK 

273_MAX_ = 'MAX' # PYCHOK OK 

274_mean_ = 'mean' # PYCHOK OK 

275_meanOf_ = 'meanOf' # PYCHOK OK 

276_meridional_ = 'meridional' # PYCHOK OK 

277_meter_ = 'meter' # PYCHOK OK 

278_meter2_ = 'meter2' # PYCHOK SQUARED 

279_MGRS_ = 'MGRS' # PYCHOK OK 

280_MIN_ = 'MIN' # PYCHOK OK 

281_MINUS_ = _DASH_ # PYCHOK OK 

282_module_ = 'module' # PYCHOK OK 

283_n_ = 'n' # PYCHOK OK 

284_N_ = 'N' # PYCHOK OK 

285_n_a_ = 'n/a' # PYCHOK OK 

286_N_A_ = 'N/A' # PYCHOK OK 

287_NAD27_ = 'NAD27' # PYCHOK OK 

288_NAD83_ = 'NAD83' # PYCHOK OK 

289_name_ = 'name' # PYCHOK OK 

290_NAN_ = 'NAN' # PYCHOK OK 

291_near_ = _Dash('near') # PYCHOK OK 

292_nearestOn2_ = 'nearestOn2' # PYCHOK OK 

293_negative_ = 'negative' # PYCHOK OK 

294_NL_ = Str_('\n') # PYCHOK OK 

295_NLATvar_ = Str_(_NL_ + '@var ') # PYCHOK OK 

296_NLHASH_ = Str_(_NL_ + '# ') # PYCHOK OK 

297# _NLNL_ = _DNL_ # PYCHOK OK 

298_NN_ = 'NN' # PYCHOK OK 

299_no_ = _Prefix('no') # PYCHOK OK 

300_north_ = 'north' # PYCHOK OK 

301_northing_ = 'northing' # PYCHOK OK 

302_NorthPole_ = 'NorthPole' # PYCHOK OK 

303_not_ = _Prefix('not') # PYCHOK OK 

304_NOTEQUAL_ = _BANG_ + _EQUAL_ # PYCHOK OK 

305_not_finite_ = 'not finite' # PYCHOK _not_(_finite_), _infinite_ 

306_not_scalar_ = 'not scalar' # PYCHOK _not_(_scalar_) 

307_NTF_ = 'NTF' # PYCHOK OK 

308_null_ = 'null' # PYCHOK OK 

309_number_ = 'number' # PYCHOK OK 

310_numpy_ = 'numpy' # PYCHOK OK 

311_Nv00_ = 'Nv00' # PYCHOK OK 

312_on_ = 'on' # PYCHOK OK 

313_opposite_ = 'opposite' # PYCHOK OK 

314_or_ = 'or' # PYCHOK OK 

315_other_ = 'other' # PYCHOK OK 

316_outside_ = 'outside' # PYCHOK OK 

317_overlap_ = 'overlap' # PYCHOK OK 

318_PERCENT_ = '%' # PYCHOK OK 

319_PERCENTDOTSTAR_ = '%.*' # PYCHOK _DOT_(_PERCENT_, _STAR_) 

320_phi_ = 'phi' # PYCHOK OK 

321_PLUS_ = Str_('+') # PYCHOK OK 

322_PLUSMINUS_ = _PLUS_ + _MINUS_ # PYCHOK OK 

323_point_ = 'point' # PYCHOK OK 

324_points_ = 'points' # PYCHOK OK 

325_pole_ = 'pole' # PYCHOK OK 

326_precision_ = 'precision' # PYCHOK OK 

327_prime_vertical_ = 'prime_vertical' # PYCHOK OK 

328_pygeodesy_abspath_ = 'pygeodesy_abspath' # PYCHOK OK 

329_PyPy__ = 'PyPy ' # PYCHOK + _SPACE_ 

330_Python_ = _Python_('Python') # PYCHOK singleton 

331_python_ = 'python' # PYCHOK OK 

332_QUOTE1_ = "'" # PYCHOK OK 

333_QUOTE2_ = '"' # PYCHOK OK 

334# _QUOTE3_ = "'''" # PYCHOK OK 

335# _QUOTE6_ = '"""' # PYCHOK OK 

336_R_ = 'R' # PYCHOK OK 

337_radians_ = 'radians' # PYCHOK OK 

338_radians2_ = 'radians2' # PYCHOK SQUARED 

339_radius_ = 'radius' # PYCHOK OK 

340_radius1_ = 'radius1' # PYCHOK OK 

341_radius2_ = 'radius2' # PYCHOK OK 

342_range_ = _Range('range') # PYCHOK OK 

343_RANGLE_ = '>' # PYCHOK OK 

344_RCURLY_ = '}' # PYCHOK RBRACE 

345_reciprocal_ = 'reciprocal' # PYCHOK OK 

346_reframe_ = 'reframe' # PYCHOK OK 

347_resolution_ = 'resolution' # PYCHOK OK 

348_rIn_ = 'rIn' # PYCHOK OK 

349_RPAREN_ = ')' # PYCHOK OK 

350_RSQUARE_ = ']' # PYCHOK RBRACK 

351_s_ = 's' # PYCHOK OK 

352_S_ = 'S' # PYCHOK OK 

353_s12_ = 's12' # PYCHOK OK 

354_S12_ = 'S12' # PYCHOK OK 

355_scalar_ = 'scalar' # PYCHOK OK 

356_scale_ = 'scale' # PYCHOK OK 

357_scale0_ = 'scale0' # PYCHOK OK 

358_scipy_ = 'scipy' # PYCHOK OK 

359_semi_circular_ = 'semi-circular' # PYCHOK OK 

360_sep_ = 'sep' # PYCHOK OK 

361_sets_ = 'sets' # PYCHOK OK 

362_singular_ = 'singular' # PYCHOK OK 

363_SLASH_ = Str_('/') # PYCHOK OK 

364_small_ = 'small' # PYCHOK OK 

365_Sphere_ = 'Sphere' # PYCHOK OK 

366_spherical_ = 'spherical' # PYCHOK OK 

367_SouthPole_ = 'SouthPole' # PYCHOK OK 

368_SPACE_ = Str_(' ') # PYCHOK OK 

369_specified_ = 'specified' # PYCHOK OK 

370_STAR_ = Str_('*') # PYCHOK OK 

371_start_ = 'start' # PYCHOK OK 

372_std_ = 'std' # PYCHOK OK 

373_stdev_ = 'stdev' # PYCHOK OK 

374_supported_ = 'supported' # PYCHOK OK 

375_sx_ = 'sx' # PYCHOK OK 

376_sy_ = 'sy' # PYCHOK OK 

377_sz_ = 'sz' # PYCHOK OK 

378_tbd_ = 'tbd' # PYCHOK OK 

379_TILDE_ = '~' # PYCHOK OK 

380_till_ = 'till' # PYCHOK OK 

381_to_ = 'to' # PYCHOK OK 

382_tolerance_ = _Prefix('tolerance') # PYCHOK OK 

383_too_ = _Prefix('too') # PYCHOK OK 

384_transform_ = 'transform' # PYCHOK OK 

385_tx_ = 'tx' # PYCHOK OK 

386_ty_ = 'ty' # PYCHOK OK 

387_tz_ = 'tz' # PYCHOK OK 

388_UNDER_ = Str_('_') # PYCHOK OK 

389 

390def _UNDER(name): # PYCHOK in .datums, .rhumbx, .ups, .utm, .utmupsBase 

391 '''(INTERNAL) Prefix C{name} with I{underscore}. 

392 ''' 

393 return name if name.startswith(_UNDER_) else NN(_UNDER_, name) 

394 

395_units_ = 'units' # PYCHOK OK 

396_up_ = 'up' # PYCHOK OK 

397_UPS_ = 'UPS' # PYCHOK OK 

398_utf_8_ = 'utf-8' # PYCHOK OK 

399_UTM_ = 'UTM' # PYCHOK OK 

400_V_ = 'V' # PYCHOK OK 

401_valid_ = 'valid' # PYCHOK OK 

402_value_ = 'value' # PYCHOK OK 

403_version_ = 'version' # PYCHOK OK 

404_vs_ = 'vs' # PYCHOK OK 

405_W_ = 'W' # PYCHOK OK 

406_WGS72_ = 'WGS72' # PYCHOK OK 

407_WGS84_ = 'WGS84' # PYCHOK OK 

408_width_ = 'width' # PYCHOK OK 

409_with_ = 'with' # PYCHOK OK 

410_x_ = 'x' # PYCHOK OK 

411_X_ = 'X' # PYCHOK OK 

412_xyz_ = 'xyz' # PYCHOK OK 

413_y_ = 'y' # PYCHOK OK 

414_Y_ = 'Y' # PYCHOK OK 

415_z_ = 'z' # PYCHOK OK 

416_Z_ = 'Z' # PYCHOK OK 

417_zone_ = 'zone' # PYCHOK OK 

418 

419_EW_ = _E_ + _W_ # PYCHOK common cardinals 

420_NE_ = _N_ + _E_ # PYCHOK positive ones 

421_NS_ = _N_ + _S_ # PYCHOK OK 

422_NSEW_ = _NS_ + _EW_ # PYCHOK OK 

423_NW_ = _N_ + _W_ # PYCHOK OK 

424_SE_ = _S_ + _E_ # PYCHOK OK 

425_SW_ = _S_ + _W_ # PYCHOK negative ones 

426# _NESW_ = _NE_ + _SW_ # PYCHOK clockwise 

427 

428_DDOT_ = Str_(_DOT_ * 2) # PYCHOK OK 

429# _DEQUAL_ = Str_(_EQUAL_ * 2) # PYCHOK OK 

430_DNL_ = Str_(_NL_ * 2) # PYCHOK OK 

431# _DSLASH_ = Str_(_SLASH_ * 2) # PYCHOK OK 

432# _DSTAR_ = Str_(_STAR_ * 2) # PYCHOK OK 

433_DUNDER_ = Str_(_UNDER_ * 2) # PYCHOK OK 

434 

435_LR_PAIRS = {_LANGLE_: _RANGLE_, 

436 _LCURLY_: _RCURLY_, 

437 _LPAREN_: _RPAREN_, 

438 _LSQUARE_: _RSQUARE_} # PYCHOK OK 

439 

440 

441def _dunder_nameof(inst, *dflt): 

442 '''(INTERNAL) Get the double_underscore __name__ attr. 

443 ''' 

444 try: 

445 return inst.__name__ 

446 except AttributeError: 

447 pass 

448 return dflt[0] if dflt else inst.__class__.__name__ 

449 

450 

451def _enquote(strs, quote=_QUOTE2_): # in .basics 

452 '''(INTERNAL) Enquote a string containing whitespace. 

453 ''' 

454 if len(strs.split()) > 1: 

455 strs = NN(quote, strs, quote) 

456 return strs 

457 

458 

459def _load_lib(name): 

460 '''(INTERNAL) Load a C{dylib}, B{C{name}} must startwith('lib'). 

461 ''' 

462 # macOS 11+ (aka 10.16) no longer provides direct loading of 

463 # system libraries, instead it installs the library after a 

464 # low-level dlopen(name) call where name is the library base 

465 # name. As a result, ctypes.util.find_library can not find 

466 # any library not previously dlopen'ed. 

467 from ctypes import CDLL 

468 from ctypes.util import find_library 

469 from sys import platform 

470 

471 ns = find_library(name), name 

472 if platform[:6] == 'darwin': # and os.name == 'posix' 

473 from ctypes import _dlopen 

474 from os.path import join 

475 ns += (_DOT_(name, 'dylib'), 

476 _DOT_(name, 'framework'), join( 

477 _DOT_(name, 'framework'), name)) 

478 else: # non-macOS 

479 def _dlopen(unused): 

480 return True 

481 

482 for n in ns: 

483 try: 

484 if n and _dlopen(n): # handle 

485 lib = CDLL(n) # == ctypes.cdll.LoadLibrary(n) 

486 if lib._name: # has a qualified name 

487 return lib 

488 except (AttributeError, OSError): 

489 pass 

490 

491 return None # raise OSError 

492 

493 

494def machine(): 

495 '''Return standard C{platform.machine}, but distinguishing Intel I{native} 

496 from Intel I{emulation} on Apple Silicon (on macOS only). 

497 

498 @return: Machine C{'arm64'} for Apple Silicon I{native}, C{'x86_64'} 

499 for Intel I{native}, C{"arm64_x86_64"} for Intel I{emulation}, 

500 etc. (C{str} with C{comma}s replaced by C{underscore}s). 

501 ''' 

502 return _platform2()[1] 

503 

504 

505def _platform2(sep=NN): 

506 '''(INTERNAL) Get platform architecture and machine as C{2-list} or C{str}. 

507 ''' 

508 global _pl2List 

509 if _pl2List is None: 

510 import platform 

511 m = platform.machine() # ARM64, arm64, x86_64, iPhone13,2, etc. 

512 m = m.replace(_COMMA_, _UNDER_) 

513 if m.lower() == 'x86_64': # on Intel or Rosetta2 ... 

514 v = platform.mac_ver() # ... and only on macOS ... 

515 if v and _version2(v[0]) > (10, 15): # ... 11+ aka 10.16 

516 # <https://Developer.Apple.com/forums/thread/659846> 

517 if _sysctl_uint('sysctl.proc_translated') == 1: # and \ 

518# _sysctl_uint('hw.optional.arm64') == 1: # PYCHOK indent 

519 m = _UNDER_('arm64', m) # Apple Si emulating Intel x86-64 

520 _pl2List = [platform.architecture()[0], # bits 

521 m] # arm64, arm64_x86_64, x86_64, etc. 

522 return sep.join(_pl2List) if sep else _pl2List # 2-list() 

523 

524 

525def _pythonarchine(sep=NN): # in test/base.py versions 

526 '''(INTERNAL) Get PyPy and Python versions and C{_platform2} as C{3-} or C{4-list} or C{str}. 

527 ''' 

528 global _Py3List 

529 if _Py3List is None: 

530 from sys import version # XXX shadows? 

531 _Py3List = [_Python_(version)] + _platform2() 

532 if _PyPy__ in version: # see test/base.py 

533 v = version.split(_PyPy__)[1].split(None, 1)[0] 

534 _Py3List.insert(0, NN(_PyPy__, v)) 

535 return sep.join(_Py3List) if sep else _Py3List # 3- or 4-list 

536 

537 

538def _splituple(strs, *sep_splits): # in .basics, .mgrs 

539 '''(INTERNAL) Split a C{comma}- or C{whitespace}-separated 

540 string into a C{tuple} of stripped strings. 

541 ''' 

542 t = (strs.split(*sep_splits) if sep_splits else 

543 strs.replace(_COMMA_, _SPACE_).split()) if strs else () 

544 return tuple(s.strip() for s in t if s) 

545 

546 

547def _sysctl_uint(name): 

548 '''(INTERNAL) Get an unsigned int sysctl item by name, use on macOS ONLY! 

549 ''' 

550 libc = _load_lib('libc') 

551 if libc: # <https://StackOverflow.com/questions/759892/python-ctypes-and-sysctl> 

552 from ctypes import byref, c_char_p, c_size_t, c_uint, sizeof # get_errno 

553 n = name if str is bytes else bytes(name, _utf_8_) # PYCHOK isPython2 = str is bytes 

554 u = c_uint(0) 

555 z = c_size_t(sizeof(u)) 

556 r = libc.sysctlbyname(c_char_p(n), byref(u), byref(z), None, c_size_t(0)) 

557 else: # could find or load 'libc' 

558 r = -2 

559 return int(r if r else u.value) # -1 ENOENT error, -2 no libc 

560 

561 

562def _usage(file_py, *args): # in .etm 

563 '''(INTERNAL) Build "usage: python -m ..." cmd line for module B{C{file_py}}. 

564 ''' 

565 import os, sys # PYCHOK imports 

566 p = NN(_python_, sys.version_info[0]) 

567 m = os.path.dirname(file_py).replace(os.getcwd(), _ELLIPSIS_) \ 

568 .replace(os.sep, _DOT_).strip() 

569 b, x = os.path.splitext(os.path.basename(file_py)) 

570 if x == '.py' and b != '__main__': 

571 m = _DOT_(m, b) 

572 return NN('usage', _SPACE_(_COLON_, p, '-m', _enquote(m), *args)) 

573 

574 

575def _version2(version, n=2): 

576 '''(INTERNAL) Split C{B{version} str} into 1-, 2- or 3-tuple of C{int}s. 

577 ''' 

578 def _int(*vs): 

579 for v in vs: 

580 try: 

581 yield int(v) 

582 except (TypeError, ValueError): 

583 pass 

584 

585 t = tuple(_int(*_splituple(version, _DOT_, 2))) + (0,) * n 

586 return t[:n] 

587 

588 

589__all__ = (_NN_, # not MISSING! 

590 Str_.__name__, # classes 

591 machine.__name__) # in .lazily 

592__version__ = '23.04.11' 

593 

594if __name__ == '__main__': 

595 

596 from pygeodesy.errors import itemsorted 

597 from pygeodesy.lazily import printf 

598 

599 t = b = 0 

600 for n, v in itemsorted(locals(), asorted=False, reverse=True): 

601 if n.endswith(_UNDER_) and n.startswith(_UNDER_) and \ 

602 not n.startswith(_DUNDER_): 

603 t += 1 

604 b += len(v) 

605 m = n[1:-1] 

606 if m != v and m.replace(_UNDER_, _SPACE_) != v: 

607 printf('%4d: %s = %r', t, n, v) 

608 n = len(locals()) 

609 printf('%4d (%d) names, %s chars total, %.2f chars avg', t, n, b, float(b) / t, nl=1) 

610 

611# **) MIT License 

612# 

613# Copyright (C) 2016-2023 -- mrJean1 at Gmail -- All Rights Reserved. 

614# 

615# Permission is hereby granted, free of charge, to any person obtaining a 

616# copy of this software and associated documentation files (the "Software"), 

617# to deal in the Software without restriction, including without limitation 

618# the rights to use, copy, modify, merge, publish, distribute, sublicense, 

619# and/or sell copies of the Software, and to permit persons to whom the 

620# Software is furnished to do so, subject to the following conditions: 

621# 

622# The above copyright notice and this permission notice shall be included 

623# in all copies or substantial portions of the Software. 

624# 

625# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 

626# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 

627# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 

628# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 

629# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 

630# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 

631# OTHER DEALINGS IN THE SOFTWARE.