1# -*- coding: utf-8 -*-

2

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

4 modules and function L{pygeodesy.machine}.

5'''

6 import sys as _sys

7 try:

8 _intern = intern # PYCHOK in .lazily

9 except NameError: # Python 3+

10 _intern = _sys.intern

11

12_COMMASPACE_ = ', ' # overriden below

13_pf2List = [] # cached _platform2 list

14_Py3List = [] # cached _pythonarchine list

15

16_sub_packages = 'auxilats', 'deprecated', 'geodesicx', 'rhumb' # PYCHOK in .lazily,

17# ... make._dist, MANIFEST, setup.setup, test.bases, test.testModules

18

19

20 class _Dash(str):

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

22 '''

23 def __call__(self, *args):

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

25 '''

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

27

28

29 class _Int(int):

30 '''(INTERNAL) Unique C{int}.

31 '''

32 pass

33

34

35 class Str_(str):

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

37

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

39 '''

40 def join_(self, *args):

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

42

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

44

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

46 result re-callable.

47 '''

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

49

50 __call__ = join_

51

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

53

54

55 class _Prefix(Str_):

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

57 '''

58 def __call__(self, *args):

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

60 '''

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

62

63

64 class _PyPy__(str): # overwritten by singleton below

65 '''(INTERNAL) Extended C{str} for C{"PyPy"} and version.

66 '''

67 def __call__(self, version=NN):

68 '''Return C{"PyPy <version>"} or C{NN}.

69 '''

70 v = version or _sys.version

71 if _PyPy__ in v:

72 v = v.split(_PyPy__)[1].split(None, 1)[0] # == _DOT_.join(_sys.pypy_version_info[:3])

73 return NN(_PyPy__, v)

74 else:

75 return NN

76

77

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

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

80 '''

81 def __call__(self, version=NN):

82 '''Return C{"Python <version>"}.

83 '''

84 v = version or _sys.version

85 return _SPACE_(self, v.split(None, 1)[0])

86

87

88 class _Range(str):

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

90 '''

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

92 prec=0, sep=_COMMASPACE_):

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

94 C{"[lo, hi)"} or C{"[lo, hi]"}.

95 '''

96 from pygeodesy.streprs import Fmt

97 r = NN(Fmt.f(lo, prec=prec), sep,

98 Fmt.f(hi, prec=prec))

99 f = (Fmt.PAREN if ropen else Fmt.LOPEN) if lopen else \

100 (Fmt.ROPEN if ropen else Fmt.SQUARE)

101 return f(r)

102

103

104 class _Slicer(str):

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

106 '''

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

108 n = len(name) - 4

109 if n > 0:

110 # assert len('till') == len(_from_) == 4

111 if name.startswith('till'):

112 i = self.find(name[4:])

113 return self if i < 0 else _Slicer(self[:i + n])

114 elif name.startswith(_from_):

115 i = self.find(name[4:])

116 return self if i < 0 else _Slicer(self[i:])

117 return str.__getattr__(self, name) # PYCHOK no cover

118

119

120 class MISSING(object):

121 '''(INTERNAL) Singleton C{str}.

122 '''

123 def toRepr(self, **unused):

124 return self.__class__.__name__

125

126 __repr__ = __str__ = toStr = toRepr

127

128 MISSING = MISSING() # PYCHOK singleton

129 MISSING.__name__ = str(MISSING)

130

131# __DUNDER__-style names would get mangled in classes

132_0_ = '0' # PYCHOK 'zero'

133_0to9_ = '0123456789' # PYCHOK OK

134_1_ = '1' # PYCHOK OK

135_2_ = '2' # PYCHOK OK

136_3_ = '3' # PYCHOK OK

137_4_ = '4' # PYCHOK OK

138_a_ = 'a' # PYCHOK OK

139_A_ = 'A' # PYCHOK OK

140_a12_ = 'a12' # PYCHOK OK

141_area_ = 'area' # PYCHOK OK

142_Airy1830_ = 'Airy1830' # PYCHOK OK

143_AiryModified_ = 'AiryModified' # PYCHOK OK

144_ambiguous_ = 'ambiguous' # PYCHOK OK

145_AMPERSAND_ = Str_('&') # PYCHOK OK

146_an_ = 'an' # PYCHOK OK

147_and_ = 'and' # PYCHOK OK

148# _AND_ = _AMPERSAND_ # PYCHOK OK

149_angle_ = 'angle' # PYCHOK OK

150_antipodal_ = 'antipodal' # PYCHOK OK

151_areaOf_ = 'areaOf' # PYCHOK OK

152_arg_ = 'arg' # PYCHOK OK

153_at_ = 'at' # PYCHOK OK

154_AT_ = Str_('@') # PYCHOK OK

155_AtoZnoIO_ = _Slicer('ABCDEFGHJKLMNPQRSTUVWXYZ') # PYCHOK in .gars, .mgrs and .wgrs

156_attribute_ = 'attribute' # PYCHOK OK

157_azi1_ = 'azi1' # PYCHOK OK

158_azi12_ = 'azi12' # PYCHOK OK

159_azi2_ = 'azi2' # PYCHOK OK

160_azimuth_ = 'azimuth' # PYCHOK OK

161_b_ = 'b' # PYCHOK OK

162_B_ = 'B' # PYCHOK OK

163_BACKSLASH_ = Str_('\\') # PYCHOK OK

164_band_ = 'band' # PYCHOK OK

165_BANG_ = Str_('!') # PYCHOK OK

166_BAR_ = Str_('|') # PYCHOK OK

167_bearing_ = 'bearing' # PYCHOK OK

168_Bessel1841_ = 'Bessel1841' # PYCHOK OK

169_beta_ = 'beta' # PYCHOK OK

170_by_ = 'by' # PYCHOK OK

171_c_ = 'c' # PYCHOK OK

172_C_ = 'C' # PYCHOK OK

173_cartesian_ = 'cartesian' # PYCHOK OK

174_center_ = 'center' # PYCHOK OK

175# _CIRCUMFLEX_ = Str_('^') # PYCHOK OK

176_Clarke1866_ = 'Clarke1866' # PYCHOK OK

177_Clarke1880IGN_ = 'Clarke1880IGN' # PYCHOK OK

178_clip_ = 'clip' # PYCHOK OK

179_clipid_ = 'clipid' # PYCHOK OK

180_coincident_ = 'coincident' # PYCHOK OK

181_colinear_ = 'colinear' # PYCHOK OK

182_COLON_ = Str_(':') # PYCHOK OK

183_COLONSPACE_ = Str_(': ') # PYCHOK OK

184_COMMA_ = Str_(',') # PYCHOK OK

185_COMMASPACE_ = Str_(_COMMASPACE_) # PYCHOK OK

186_composite_ = 'composite' # PYCHOK OK

187_concentric_ = 'concentric' # PYCHOK OK

188_convergence_ = _Prefix('convergence') # PYCHOK OK

189_conversion_ = 'conversion' # PYCHOK OK

190_convex_ = 'convex' # PYCHOK OK

191_cubic_ = 'cubic' # PYCHOK OK

192_d_ = 'd' # PYCHOK OK

193_D_ = 'D' # PYCHOK OK

194_DASH_ = Str_('-') # PYCHOK == _MINUS_

195_datum_ = 'datum' # PYCHOK OK

196_decode3_ = 'decode3' # PYCHOK OK

197_deg_ = 'deg' # PYCHOK OK

198_degrees_ = 'degrees' # PYCHOK OK

199_degrees2_ = 'degrees2' # PYCHOK SQUARED

200_delta_ = 'delta' # PYCHOK OK

201_DEPRECATED_ = 'DEPRECATED' # PYCHOK OK

202_DEQUALSPACED_ = Str_(' == ') # PYCHOK OK

203_distance_ = 'distance' # PYCHOK OK

204_distant_ = _Prefix('distant') # PYCHOK OK

205_doesn_t_exist_ = "doesn't exist" # PYCHOK OK

206_DOT_ = Str_('.') # PYCHOK OK

207_down_ = 'down' # PYCHOK OK

208_e_ = 'e' # PYCHOK OK

209_E_ = 'E' # PYCHOK OK

210_earth_ = 'earth' # PYCHOK OK

211_east_ = 'east' # PYCHOK OK

212_easting_ = 'easting' # PYCHOK OK

213_ecef_ = 'ecef' # PYCHOK OK

214_edge_ = 'edge' # PYCHOK OK

215_elevation_ = 'elevation' # PYCHOK OK

216_ELLIPSIS_ = Str_('...') # PYCHOK OK

217_ELLIPSIS4_ = Str_('....') # PYCHOK OK

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

219_ellipsoid_ = 'ellipsoid' # PYCHOK OK

220_ellipsoidal_ = 'ellipsoidal' # PYCHOK OK

221_enabled_ = 'enabled' # PYCHOK OK

222_encode_ = 'encode' # PYCHOK OK

223_end_ = 'end' # PYCHOK OK

224_epoch_ = 'epoch' # PYCHOK OK

225_eps_ = 'eps' # PYCHOK OK

226_EQUAL_ = Str_('=') # PYCHOK OK

227_EQUALSPACED_ = Str_(' = ') # PYCHOK OK

228_Error_ = 'Error' # PYCHOK OK

229_exceed_PI_radians_ = 'exceed PI radians' # PYCHOK OK

230_exceeds_ = _Prefix('exceeds') # PYCHOK OK

231# _EXCLAMATION_ = _BANG_ # PYCHOK OK

232_exists_ = 'exists' # PYCHOK OK

233_f_ = 'f' # PYCHOK OK

234_F_ = 'F' # PYCHOK OK

235_feet_ = 'feet' # PYCHOK OK

236_few_ = 'few' # PYCHOK OK

237_fi_ = 'fi' # PYCHOK OK

238_finite_ = 'finite' # PYCHOK OK

239_from_ = 'from' # PYCHOK OK

240_g_ = 'g' # PYCHOK OK

241_gamma_ = 'gamma' # PYCHOK OK

242_GRS80_ = 'GRS80' # PYCHOK OK

243_h_ = 'h' # PYCHOK OK

244_H_ = 'H' # PYCHOK OK

245_HASH_ = '#' # PYCHOK OK

246_height_ = 'height' # PYCHOK OK

247_hemipole_ = 'hemipole' # PYCHOK OK

248_i_ = 'i' # PYCHOK OK

249_iadd_op_ = '+=' # PYCHOK OK

250_immutable_ = 'immutable' # PYCHOK OK

251_in_ = 'in' # PYCHOK OK

252_incompatible_ = 'incompatible' # PYCHOK OK

253_INF_ = 'INF' # PYCHOK OK

254_infinite_ = 'infinite' # PYCHOK _not_finite_

255_initial_ = 'initial' # PYCHOK OK

256_inside_ = 'inside' # PYCHOK OK

257_insufficient_ = 'insufficient' # PYCHOK OK

258_intersection_ = 'intersection' # PYCHOK OK

259_Intl1924_ = 'Intl1924' # PYCHOK OK

260_invalid_ = 'invalid' # PYCHOK OK

261_invokation_ = 'invokation' # PYCHOK OK

262_isclockwise_ = 'isclockwise' # PYCHOK OK

263_ispolar_ = 'ispolar' # PYCHOK OK

264_j_ = 'j' # PYCHOK OK

265_k0_ = 'k0' # PYCHOK OK

266_kind_ = 'kind' # PYCHOK OK

267_knots_ = 'knots' # PYCHOK OK

268_Krassovski1940_ = 'Krassovski1940' # PYCHOK OK

269_Krassowsky1940_ = 'Krassowsky1940' # PYCHOK OK

270_LANGLE_ = '<' # PYCHOK OK

271_lam_ = 'lam' # PYCHOK OK

272_lat_ = 'lat' # PYCHOK OK

273_lat0_ = 'lat0' # PYCHOK OK

274_lat1_ = 'lat1' # PYCHOK OK

275_lat2_ = 'lat2' # PYCHOK OK

276_latlon_ = 'latlon' # PYCHOK OK

277_LatLon_ = 'LatLon' # PYCHOK OK

278_LCURLY_ = '{' # PYCHOK LBRACE

279_len_ = 'len' # PYCHOK OK

280_limit_ = 'limit' # PYCHOK OK

281_line_ = 'line' # PYCHOK OK

282_linear_ = 'linear' # PYCHOK OK

283_LPAREN_ = '(' # PYCHOK OK

284_lon_ = 'lon' # PYCHOK OK

285_lon0_ = 'lon0' # PYCHOK OK

286_lon1_ = 'lon1' # PYCHOK OK

287_lon2_ = 'lon2' # PYCHOK OK

288_low_ = 'low' # PYCHOK OK

289_LSQUARE_ = '[' # PYCHOK LBRACK

290_ltp_ = 'ltp' # PYCHOK OK

291_m_ = 'm' # PYCHOK OK

292_M_ = 'M' # PYCHOK OK

293_m12_ = 'm12' # PYCHOK OK

294_M12_ = 'M12' # PYCHOK OK

295_M21_ = 'M21' # PYCHOK OK

296_MANT_DIG_ = 'MANT_DIG' # PYCHOK OK

297_MAX_ = 'MAX' # PYCHOK OK

298_mean_ = 'mean' # PYCHOK OK

299_meanOf_ = 'meanOf' # PYCHOK OK

300_meridional_ = 'meridional' # PYCHOK OK

301_meter_ = 'meter' # PYCHOK OK

302_meter2_ = 'meter2' # PYCHOK SQUARED

303_MGRS_ = 'MGRS' # PYCHOK OK

304_MIN_ = 'MIN' # PYCHOK OK

305_MINUS_ = _DASH_ # PYCHOK OK

306_module_ = 'module' # PYCHOK OK

307_n_ = 'n' # PYCHOK OK

308_N_ = 'N' # PYCHOK OK

309_n_a_ = 'n/a' # PYCHOK OK

310_N_A_ = 'N/A' # PYCHOK OK

311_NAD27_ = 'NAD27' # PYCHOK OK

312_NAD83_ = 'NAD83' # PYCHOK OK

313_name_ = 'name' # PYCHOK OK

314_NAN_ = 'NAN' # PYCHOK OK

315_near_ = _Dash('near') # PYCHOK OK

316_nearestOn2_ = 'nearestOn2' # PYCHOK OK

317_negative_ = 'negative' # PYCHOK OK

318_NL_ = Str_('\n') # PYCHOK OK

319_NLATvar_ = Str_(_NL_ + '@var ') # PYCHOK OK

320_NLHASH_ = Str_(_NL_ + '# ') # PYCHOK OK

321# _NLNL_ = _DNL_ # PYCHOK OK

322_NN_ = 'NN' # PYCHOK OK

323_no_ = _Prefix('no') # PYCHOK OK

324_north_ = 'north' # PYCHOK OK

325_northing_ = 'northing' # PYCHOK OK

326_NorthPole_ = 'NorthPole' # PYCHOK OK

327_not_ = _Prefix('not') # PYCHOK OK

328_NOTEQUAL_ = _BANG_ + _EQUAL_ # PYCHOK OK

329_not_finite_ = 'not finite' # PYCHOK _not_(_finite_), _infinite_

330_not_scalar_ = 'not scalar' # PYCHOK _not_(_scalar_)

331_NTF_ = 'NTF' # PYCHOK OK

332_null_ = 'null' # PYCHOK OK

333_number_ = 'number' # PYCHOK OK

334_numpy_ = 'numpy' # PYCHOK OK

335_Nv00_ = 'Nv00' # PYCHOK OK

336_of_ = 'of' # PYCHOK OK

337_on_ = 'on' # PYCHOK OK

338_opposite_ = 'opposite' # PYCHOK OK

339_or_ = 'or' # PYCHOK OK

340_other_ = 'other' # PYCHOK OK

341_outside_ = 'outside' # PYCHOK OK

342_overlap_ = 'overlap' # PYCHOK OK

343_parallel_ = 'parallel' # PYCHOK OK

344_PERCENT_ = '%' # PYCHOK OK

345_PERCENTDOTSTAR_ = '%.*' # PYCHOK _DOT_(_PERCENT_, _STAR_)

346_phi_ = 'phi' # PYCHOK OK

347_PLUS_ = Str_('+') # PYCHOK OK

348_PLUSMINUS_ = _PLUS_ + _MINUS_ # PYCHOK OK

349_point_ = 'point' # PYCHOK OK

350_points_ = 'points' # PYCHOK OK

351_pole_ = 'pole' # PYCHOK OK

352_precision_ = 'precision' # PYCHOK OK

353_prime_vertical_ = 'prime_vertical' # PYCHOK OK

354_pygeodesy_ = 'pygeodesy' # PYCHOK OK

355_pygeodesy_abspath_ = 'pygeodesy_abspath' # PYCHOK OK

356_PyPy__ = _PyPy__('PyPy ') # PYCHOK + _SPACE_

357_Python_ = _Python_('Python') # PYCHOK singleton

358_python_ = 'python' # PYCHOK OK

359_QUOTE1_ = "'" # PYCHOK OK

360_QUOTE2_ = '"' # PYCHOK OK

361# _QUOTE3_ = "'''" # PYCHOK OK

362# _QUOTE6_ = '"""' # PYCHOK OK

363_R_ = 'R' # PYCHOK OK

364_radians_ = 'radians' # PYCHOK OK

365_radians2_ = 'radians2' # PYCHOK SQUARED

366_radius_ = 'radius' # PYCHOK OK

367_radius1_ = 'radius1' # PYCHOK OK

368_radius2_ = 'radius2' # PYCHOK OK

369_range_ = _Range('range') # PYCHOK OK

370_RANGLE_ = '>' # PYCHOK OK

371_RCURLY_ = '}' # PYCHOK RBRACE

372_reciprocal_ = 'reciprocal' # PYCHOK OK

373_reframe_ = 'reframe' # PYCHOK OK

374_resolution_ = 'resolution' # PYCHOK OK

375_rIn_ = 'rIn' # PYCHOK OK

376_RPAREN_ = ')' # PYCHOK OK

377_RSQUARE_ = ']' # PYCHOK RBRACK

378_s_ = 's' # PYCHOK OK

379_S_ = 'S' # PYCHOK OK

380_s12_ = 's12' # PYCHOK OK

381_S12_ = 'S12' # PYCHOK OK

382_scalar_ = 'scalar' # PYCHOK OK

383_scale_ = 'scale' # PYCHOK OK

384_scale0_ = 'scale0' # PYCHOK OK

385_scipy_ = 'scipy' # PYCHOK OK

386_semi_circular_ = 'semi-circular' # PYCHOK OK

387_sep_ = 'sep' # PYCHOK OK

388_singular_ = 'singular' # PYCHOK OK

389_SLASH_ = Str_('/') # PYCHOK OK

390_small_ = 'small' # PYCHOK OK

391_Sphere_ = 'Sphere' # PYCHOK OK

392_spherical_ = 'spherical' # PYCHOK OK

393_SouthPole_ = 'SouthPole' # PYCHOK OK

394_SPACE_ = Str_(' ') # PYCHOK OK

395_specified_ = 'specified' # PYCHOK OK

396_STAR_ = Str_('*') # PYCHOK OK

397_start_ = 'start' # PYCHOK OK

398_std_ = 'std' # PYCHOK OK

399_stdev_ = 'stdev' # PYCHOK OK

400_supported_ = 'supported' # PYCHOK OK

401_tbd_ = 'tbd' # PYCHOK OK

402_TILDE_ = '~' # PYCHOK OK

403_to_ = 'to' # PYCHOK OK

404_tolerance_ = _Prefix('tolerance') # PYCHOK OK

405_too_ = _Prefix('too') # PYCHOK OK

406_transform_ = 'transform' # PYCHOK OK

407_UNDER_ = Str_('_') # PYCHOK OK

408_units_ = 'units' # PYCHOK OK

409_UNUSED_ = 'UNUSED' # PYCHOK OK

410_up_ = 'up' # PYCHOK OK

411_UPS_ = 'UPS' # PYCHOK OK

412_utf_8_ = 'utf-8' # PYCHOK OK

413_UTM_ = 'UTM' # PYCHOK OK

414_V_ = 'V' # PYCHOK OK

415_valid_ = 'valid' # PYCHOK OK

416_value_ = 'value' # PYCHOK OK

417_version_ = 'version' # PYCHOK OK

418_vs_ = 'vs' # PYCHOK OK

419_W_ = 'W' # PYCHOK OK

420_WGS72_ = 'WGS72' # PYCHOK OK

421_WGS84_ = 'WGS84' # PYCHOK OK

422_width_ = 'width' # PYCHOK OK

423_with_ = 'with' # PYCHOK OK

424_x_ = 'x' # PYCHOK OK

425_X_ = 'X' # PYCHOK OK

426_xyz_ = 'xyz' # PYCHOK OK

427_y_ = 'y' # PYCHOK OK

428_Y_ = 'Y' # PYCHOK OK

429_z_ = 'z' # PYCHOK OK

430_Z_ = 'Z' # PYCHOK OK

431_zone_ = 'zone' # PYCHOK OK

432

433_EW_ = _E_ + _W_ # PYCHOK common cardinals

434_NE_ = _N_ + _E_ # PYCHOK positive ones

435_NS_ = _N_ + _S_ # PYCHOK OK

436_NSEW_ = _NS_ + _EW_ # PYCHOK OK

437_NW_ = _N_ + _W_ # PYCHOK OK

438_SE_ = _S_ + _E_ # PYCHOK OK

439_SW_ = _S_ + _W_ # PYCHOK negative ones

440# _NESW_ = _NE_ + _SW_ # PYCHOK clockwise

441

442_DDOT_ = Str_(_DOT_ * 2) # PYCHOK OK

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

444_DNL_ = Str_(_NL_ * 2) # PYCHOK OK

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

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

447_DUNDER_ = Str_(_UNDER_ * 2) # PYCHOK OK

448

449_LR_PAIRS = {_LANGLE_: _RANGLE_,

450 _LCURLY_: _RCURLY_,

451 _LPAREN_: _RPAREN_,

452 _LSQUARE_: _RSQUARE_} # PYCHOK OK

453

454

455 def _dunder_nameof(inst, *dflt):

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

457 '''

458 try:

459 return inst.__name__

460 except AttributeError:

461 pass

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

463

464

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

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

467 '''

468 if len(strs.split()) > 1:

469 strs = NN(quote, strs, quote)

470 return strs

471

472

473 def _headof(name):

474 '''(INTERNAL) Get the head name of qualified C{name} or the C{name}.

475 '''

476 i = name.find(_DOT_)

477 return name if i < 0 else name[:i]

478

479

480 def _is(a, b): # PYCHOK no cover

481 '''(INTERNAL) C{a is b}? in C{PyPy}

482 '''

483 return (a == b) if _isPyPy() else (a is b)

484

485

486 def _isPyPy():

487 '''(INTERNAL) Is this C{PyPy}?

488 '''

489 # platform.python_implementation() == 'PyPy'

490 return _pythonarchine()[0].startswith(_PyPy__)

491

492

493 def _load_lib(name):

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

495 '''

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

497 # system libraries. As a result, C{ctypes.util.find_library}

498 # will not find any library, unless previously installed by a

499 # low-level dlopen(name) call (with the library base C{name}).

500 from ctypes import CDLL

501 from ctypes.util import find_library

502

503 ns = find_library(name), name

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

505 from ctypes import _dlopen, DEFAULT_MODE

506 from os.path import join

507 ns += (_DOT_(name, 'dylib'),

508 _DOT_(name, 'framework'), join(

509 _DOT_(name, 'framework'), name))

510 else: # non-macOS

511 DEFAULT_MODE = 0

512

513 def _dlopen(*unused):

514 return True

515

516 for n in ns:

517 try:

518 if n and _dlopen(n, DEFAULT_MODE): # pre-load handle

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

520 if lib._name: # has a qualified name

521 return lib

522 except (AttributeError, OSError):

523 pass

524

525 return None # raise OSError

526

527

528 def machine():

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

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

531

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

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

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

535 '''

536 return _platform2()[1]

537

538

539 def _platform2(sep=NN):

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

541 '''

542 L = _pf2List

543 if not L:

544 import platform

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

546 m = m.replace(_COMMA_, _UNDER_)

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

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

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

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

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

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

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

554 L[:] = [platform.architecture()[0], # bits

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

556 return sep.join(L) if sep else L # 2-list()

557

558

559 def _pythonarchine(sep=NN): # in test/bases.py versions

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

561 '''

562 L = _Py3List

563 if not L:

564 v = _sys.version

565 L[:] = [_Python_(v)] + _platform2()

566 pypy = _PyPy__(v)

567 if pypy:

568 L.insert(0, pypy)

569 return sep.join(L) if sep else L # 3- or 4-list

570

571

572 def _sysctl_uint(name):

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

574 '''

575 libc = _load_lib('libc')

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

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

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

579 u = c_uint(0)

580 z = c_size_t(sizeof(u))

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

582 else: # could find or load 'libc'

583 r = -2

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

585

586

587 def _tailof(name):

588 '''(INTERNAL) Get the base name of qualified C{name} or the C{name}.

589 '''

590 i = name.rfind(_DOT_) + 1

591 return name[i:] if i > 0 else name

592

593

594 def _under(name): # PYCHOK in .datums, .auxilats, .ups, .utm, .utmupsBase, ...

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

596 '''

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

598

599

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

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

602 '''

603 import os

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

605 .replace(os.sep, _DOT_).strip()

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

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

608 m = _DOT_(m or _pygeodesy_, b)

609 p = NN(_python_, _sys.version_info[0])

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

611

612

613 def _version2(version, n=2):

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

615 '''

616 t = _version_ints(version.split(_DOT_, 2))

617 if len(t) < n:

618 t += (0,) * n

619 return t[:n]

620

621

622 def _version_info(package): # in .Base.karney, .basics

623 '''(INTERNAL) Get the C{package.__version_info__} as a 2- or

624 3-tuple C{(major, minor, revision)} if C{int}s.

625 '''

626 try:

627 return _version_ints(package.__version_info__)

628 except AttributeError:

629 return _version2(package.__version__.strip(), n=3)

630

631

632 def _version_ints(vs):

633 # helper for _version2 and _version_info above

634

635 def _ints(vs):

636 for v in vs:

637 try:

638 yield int(v.strip())

639 except (TypeError, ValueError):

640 pass

641

642 return tuple(_ints(vs))

643

644

645__all__ = (_NN_, # not MISSING!

646 Str_.__name__, # classes

647 machine.__name__) # in .lazily

648__version__ = '24.02.12'

649

650 if __name__ == '__main__':

651

652 from pygeodesy import itemsorted, printf

653

654 t = b = 0

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

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

657 not n.startswith(_DUNDER_):

658 t += 1

659 b += len(v)

660 m = n[1:-1]

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

662 printf('%4d: %s = %r', t, n, v)

663 n = len(locals())

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

665

666# **) MIT License

667#

668# Copyright (C) 2016-2024 -- mrJean1 at Gmail -- All Rights Reserved.

669#

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

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

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

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

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

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

676#

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

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

679#

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

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

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

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

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

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

686# OTHER DEALINGS IN THE SOFTWARE.