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# -*- coding: utf-8 -*- 

 

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

modules and function L{pygeodesy.machine}. 

''' 

_COMMASPACE_ = ', ' # overriden below 

_pl2List = None # cached _platform2 lists 

_Py3List = None # cached _pythonarchine lists 

 

 

class _Dash(str): 

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

''' 

def __call__(self, *args): 

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

''' 

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

 

 

class _Int(int): 

'''(INTERNAL) Unique C{int}. 

''' 

pass 

 

 

class Str_(str): 

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

 

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

''' 

def join_(self, *args): 

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

 

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

 

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

result re-callable. 

''' 

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

 

__call__ = join_ 

 

 

class _Prefix(Str_): 

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

''' 

def __call__(self, *args): 

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

''' 

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

 

 

class _Python_(str): # overwritten by singleton below 

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

''' 

def __call__(self, version=None): 

'''Return C{"Python <version>"}. 

''' 

if not version: 

from sys import version 

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

 

 

class _Range(str): 

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

''' 

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

prec=0, sep=_COMMASPACE_): 

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

C{"[lo, hi)"} or C{"[lo, hi]"}. 

''' 

from pygeodesy.streprs import Fmt 

r = NN(Fmt.f(lo, prec=prec), sep, 

Fmt.f(hi, prec=prec)) 

if lopen: 

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

else: 

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

return r 

 

 

class _Slicer(str): 

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

''' 

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

if name.startswith(_till_): 

i = self.find(name[len(_till_):]) 

if 0 < i < len(self): 

return _Slicer(self[:i + 1]) 

elif name.startswith(_from_): 

i = self.find(name[len(_from_):]) 

if 0 < (i + 1) < len(self): 

return _Slicer(self[i:]) 

else: 

return getattr(str, name) 

return self 

 

 

class MISSING(object): 

'''(INTERNAL) Singleton C{str}. 

''' 

def toRepr(self, **unused): 

return self.__class__.__name__ 

 

__repr__ = toRepr 

__str__ = toRepr 

toStr = toRepr 

 

MISSING = MISSING() # PYCHOK singleton 

MISSING.__name__ = str(MISSING) 

 

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

 

# __DUNDER__-style names would get mangled in classes 

_0_ = '0' # PYCHOK 'zero' 

_0to9_ = '0123456789' # PYCHOK OK 

_1_ = '1' # PYCHOK OK 

_2_ = '2' # PYCHOK OK 

_3_ = '3' # PYCHOK OK 

_4_ = '4' # PYCHOK OK 

_a_ = 'a' # PYCHOK OK 

_A_ = 'A' # PYCHOK OK 

_a12_ = 'a12' # PYCHOK OK 

_area_ = 'area' # PYCHOK OK 

_Airy1830_ = 'Airy1830' # PYCHOK OK 

_AiryModified_ = 'AiryModified' # PYCHOK OK 

_ambiguous_ = 'ambiguous' # PYCHOK OK 

_AMPERSAND_ = Str_('&') # PYCHOK OK 

_an_ = 'an' # PYCHOK OK 

_and_ = 'and' # PYCHOK OK 

# _AND_ = _AMPERSAND_ # PYCHOK OK 

_angle_ = 'angle' # PYCHOK OK 

_antipodal_ = 'antipodal' # PYCHOK OK 

_areaOf_ = 'areaOf' # PYCHOK OK 

_arg_ = 'arg' # PYCHOK OK 

_at_ = 'at' # PYCHOK OK 

_AT_ = Str_('@') # PYCHOK OK 

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

_attribute_ = 'attribute' # PYCHOK OK 

_azi1_ = 'azi1' # PYCHOK OK 

_azi12_ = 'azi12' # PYCHOK OK 

_azi2_ = 'azi2' # PYCHOK OK 

_azimuth_ = 'azimuth' # PYCHOK OK 

_b_ = 'b' # PYCHOK OK 

_B_ = 'B' # PYCHOK OK 

_BACKSLASH_ = Str_('\\') # PYCHOK OK 

_band_ = 'band' # PYCHOK OK 

_BANG_ = Str_('!') # PYCHOK OK 

_BAR_ = Str_('|') # PYCHOK OK 

_bearing_ = 'bearing' # PYCHOK OK 

_Bessel1841_ = 'Bessel1841' # PYCHOK OK 

_by_ = 'by' # PYCHOK OK 

_c_ = 'c' # PYCHOK OK 

_C_ = 'C' # PYCHOK OK 

_cartesian_ = 'cartesian' # PYCHOK OK 

_center_ = 'center' # PYCHOK OK 

# _CIRCUMFLEX_ = '^' # PYCHOK OK 

_Clarke1866_ = 'Clarke1866' # PYCHOK OK 

_Clarke1880IGN_ = 'Clarke1880IGN' # PYCHOK OK 

_clip_ = 'clip' # PYCHOK OK 

_coincident_ = 'coincident' # PYCHOK OK 

_colinear_ = 'colinear' # PYCHOK OK 

_COLON_ = Str_(':') # PYCHOK OK 

_COLONSPACE_ = Str_(': ') # PYCHOK OK 

_COMMA_ = Str_(',') # PYCHOK OK 

_COMMASPACE_ = Str_(_COMMASPACE_) # PYCHOK OK 

_concentric_ = 'concentric' # PYCHOK OK 

_convergence_ = _Prefix('convergence') # PYCHOK OK 

_conversion_ = 'conversion' # PYCHOK OK 

_convex_ = 'convex' # PYCHOK OK 

_cubic_ = 'cubic' # PYCHOK OK 

_d_ = 'd' # PYCHOK OK 

_D_ = 'D' # PYCHOK OK 

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

_datum_ = 'datum' # PYCHOK OK 

_decode3_ = 'decode3' # PYCHOK OK 

_deg_ = 'deg' # PYCHOK OK 

_degrees_ = 'degrees' # PYCHOK OK 

_degrees2_ = 'degrees2' # PYCHOK SQUARED 

_DEPRECATED_ = 'DEPRECATED' # PYCHOK OK 

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

_distance_ = 'distance' # PYCHOK OK 

_distanceTo_ = 'distanceTo' # PYCHOK OK 

_distant_ = _Prefix('distant') # PYCHOK OK 

_doesn_t_exist_ = "doesn't exist" # PYCHOK OK 

_DOT_ = Str_('.') # PYCHOK OK 

_down_ = 'down' # PYCHOK OK 

_e_ = 'e' # PYCHOK OK 

_E_ = 'E' # PYCHOK OK 

_east_ = 'east' # PYCHOK OK 

_easting_ = 'easting' # PYCHOK OK 

_ecef_ = 'ecef' # PYCHOK OK 

_edge_ = 'edge' # PYCHOK OK 

_elevation_ = 'elevation' # PYCHOK OK 

_ELLIPSIS_ = Str_('...') # PYCHOK OK 

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

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

_ellipsoid_ = 'ellipsoid' # PYCHOK OK 

_ellipsoidal_ = 'ellipsoidal' # PYCHOK OK 

_enabled_ = 'enabled' # PYCHOK OK 

_encode_ = 'encode' # PYCHOK OK 

_end_ = 'end' # PYCHOK OK 

_epoch_ = 'epoch' # PYCHOK OK 

_EQUAL_ = Str_('=') # PYCHOK OK 

_EQUALSPACED_ = Str_(' = ') # PYCHOK OK 

_Error_ = 'Error' # PYCHOK OK 

_exceed_PI_radians_ = 'exceed PI radians' # PYCHOK OK 

_exceeds_ = _Prefix('exceeds') # PYCHOK OK 

# _EXCLAMATION_ = _BANG_ # PYCHOK OK 

_exists_ = 'exists' # PYCHOK OK 

_f_ = 'f' # PYCHOK OK 

_F_ = 'F' # PYCHOK OK 

_feet_ = 'feet' # PYCHOK OK 

_few_ = 'few' # PYCHOK OK 

_fi_ = 'fi' # PYCHOK OK 

_finite_ = 'finite' # PYCHOK OK 

_from_ = 'from' # PYCHOK OK 

_g_ = 'g' # PYCHOK OK 

_gamma_ = 'gamma' # PYCHOK OK 

_GRS80_ = 'GRS80' # PYCHOK OK 

_h_ = 'h' # PYCHOK OK 

_H_ = 'H' # PYCHOK OK 

_height_ = 'height' # PYCHOK OK 

_hemipole_ = 'hemipole' # PYCHOK OK 

_i_ = 'i' # PYCHOK OK 

_iadd_ = '+=' # PYCHOK OK 

_immutable_ = 'immutable' # PYCHOK OK 

_in_ = 'in' # PYCHOK OK 

_incompatible_ = 'incompatible' # PYCHOK OK 

_INF_ = 'INF' # PYCHOK OK 

_infinite_ = 'infinite' # PYCHOK _not_finite_ 

_initial_ = 'initial' # PYCHOK OK 

_inside_ = 'inside' # PYCHOK OK 

_intersection_ = 'intersection' # PYCHOK OK 

_Intl1924_ = 'Intl1924' # PYCHOK OK 

_invalid_ = 'invalid' # PYCHOK OK 

_isclockwise_ = 'isclockwise' # PYCHOK OK 

_ispolar_ = 'ispolar' # PYCHOK OK 

_j_ = 'j' # PYCHOK OK 

_k0_ = 'k0' # PYCHOK OK 

_kind_ = 'kind' # PYCHOK OK 

_knots_ = 'knots' # PYCHOK OK 

_Krassovski1940_ = 'Krassovski1940' # PYCHOK OK 

_Krassowsky1940_ = 'Krassowsky1940' # PYCHOK OK 

_LANGLE_ = '<' # PYCHOK OK 

_lam_ = 'lam' # PYCHOK OK 

_lat_ = 'lat' # PYCHOK OK 

_lat0_ = 'lat0' # PYCHOK OK 

_lat1_ = 'lat1' # PYCHOK OK 

_lat2_ = 'lat2' # PYCHOK OK 

_latlon_ = 'latlon' # PYCHOK OK 

_LatLon_ = 'LatLon' # PYCHOK OK 

_LCURLY_ = '{' # PYCHOK LBRACE 

_len_ = 'len' # PYCHOK OK 

_linear_ = 'linear' # PYCHOK OK 

_LPAREN_ = '(' # PYCHOK OK 

_lon_ = 'lon' # PYCHOK OK 

_lon0_ = 'lon0' # PYCHOK OK 

_lon1_ = 'lon1' # PYCHOK OK 

_lon2_ = 'lon2' # PYCHOK OK 

_LSQUARE_ = '[' # PYCHOK LBRACK 

_ltp_ = 'ltp' # PYCHOK OK 

_m_ = 'm' # PYCHOK OK 

_M_ = 'M' # PYCHOK OK 

_m12_ = 'm12' # PYCHOK OK 

_M12_ = 'M12' # PYCHOK OK 

_M21_ = 'M21' # PYCHOK OK 

_MANT_DIG_ = 'MANT_DIG' # PYCHOK OK 

_MAX_ = 'MAX' # PYCHOK OK 

_mean_ = 'mean' # PYCHOK OK 

_meanOf_ = 'meanOf' # PYCHOK OK 

_meridional_ = 'meridional' # PYCHOK OK 

_meter_ = 'meter' # PYCHOK OK 

_meter2_ = 'meter2' # PYCHOK SQUARED 

_MGRS_ = 'MGRS' # PYCHOK OK 

_MIN_ = 'MIN' # PYCHOK OK 

_MINUS_ = _DASH_ # PYCHOK OK 

_module_ = 'module' # PYCHOK OK 

_n_ = 'n' # PYCHOK OK 

_N_ = 'N' # PYCHOK OK 

_n_a_ = 'n/a' # PYCHOK OK 

_N_A_ = 'N/A' # PYCHOK OK 

_NAD27_ = 'NAD27' # PYCHOK OK 

_NAD83_ = 'NAD83' # PYCHOK OK 

_name_ = 'name' # PYCHOK OK 

_NAN_ = 'NAN' # PYCHOK OK 

_near_ = _Dash('near') # PYCHOK OK 

_nearestOn2_ = 'nearestOn2' # PYCHOK OK 

_negative_ = 'negative' # PYCHOK OK 

_NL_ = Str_('\n') # PYCHOK OK 

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

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

# _NLNL_ = _DNL_ # PYCHOK OK 

_NN_ = 'NN' # PYCHOK OK 

_no_ = _Prefix('no') # PYCHOK OK 

_north_ = 'north' # PYCHOK OK 

_northing_ = 'northing' # PYCHOK OK 

_NorthPole_ = 'NorthPole' # PYCHOK OK 

_not_ = _Prefix('not') # PYCHOK OK 

_NOTEQUAL_ = _BANG_ + _EQUAL_ # PYCHOK OK 

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

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

_NTF_ = 'NTF' # PYCHOK OK 

_null_ = 'null' # PYCHOK OK 

_number_ = 'number' # PYCHOK OK 

_numpy_ = 'numpy' # PYCHOK OK 

_Nv00_ = 'Nv00' # PYCHOK OK 

_on_ = 'on' # PYCHOK OK 

_opposite_ = 'opposite' # PYCHOK OK 

_or_ = 'or' # PYCHOK OK 

_other_ = 'other' # PYCHOK OK 

_outside_ = 'outside' # PYCHOK OK 

_overlap_ = 'overlap' # PYCHOK OK 

_PERCENT_ = '%' # PYCHOK OK 

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

_phi_ = 'phi' # PYCHOK OK 

_PLUS_ = Str_('+') # PYCHOK OK 

_PLUSMINUS_ = _PLUS_ + _MINUS_ # PYCHOK OK 

_point_ = 'point' # PYCHOK OK 

_points_ = 'points' # PYCHOK OK 

_pole_ = 'pole' # PYCHOK OK 

_precision_ = 'precision' # PYCHOK OK 

_prime_vertical_ = 'prime_vertical' # PYCHOK OK 

_pygeodesy_abspath_ = 'pygeodesy_abspath' # PYCHOK OK 

_PyPy__ = 'PyPy ' # PYCHOK + _SPACE_ 

_Python_ = _Python_('Python') # PYCHOK singleton 

_python_ = 'python' # PYCHOK OK 

_QUOTE1_ = "'" # PYCHOK OK 

_QUOTE2_ = '"' # PYCHOK OK 

# _QUOTE3_ = "'''" # PYCHOK OK 

# _QUOTE6_ = '"""' # PYCHOK OK 

_R_ = 'R' # PYCHOK OK 

_radians_ = 'radians' # PYCHOK OK 

_radians2_ = 'radians2' # PYCHOK SQUARED 

_radius_ = 'radius' # PYCHOK OK 

_radius1_ = 'radius1' # PYCHOK OK 

_radius2_ = 'radius2' # PYCHOK OK 

_range_ = _Range('range') # PYCHOK OK 

_RANGLE_ = '>' # PYCHOK OK 

_RCURLY_ = '}' # PYCHOK RBRACE 

_reciprocal_ = 'reciprocal' # PYCHOK OK 

_reframe_ = 'reframe' # PYCHOK OK 

_resolution_ = 'resolution' # PYCHOK OK 

_rIn_ = 'rIn' # PYCHOK OK 

_RPAREN_ = ')' # PYCHOK OK 

_RSQUARE_ = ']' # PYCHOK RBRACK 

_s_ = 's' # PYCHOK OK 

_S_ = 'S' # PYCHOK OK 

_s12_ = 's12' # PYCHOK OK 

_S12_ = 'S12' # PYCHOK OK 

_scalar_ = 'scalar' # PYCHOK OK 

_scale_ = 'scale' # PYCHOK OK 

_scale0_ = 'scale0' # PYCHOK OK 

_scipy_ = 'scipy' # PYCHOK OK 

_semi_circular_ = 'semi-circular' # PYCHOK OK 

_sep_ = 'sep' # PYCHOK OK 

_sets_ = 'sets' # PYCHOK OK 

_singular_ = 'singular' # PYCHOK OK 

_SLASH_ = Str_('/') # PYCHOK OK 

_small_ = 'small' # PYCHOK OK 

_Sphere_ = 'Sphere' # PYCHOK OK 

_spherical_ = 'spherical' # PYCHOK OK 

_SouthPole_ = 'SouthPole' # PYCHOK OK 

_SPACE_ = Str_(' ') # PYCHOK OK 

_specified_ = 'specified' # PYCHOK OK 

_STAR_ = Str_('*') # PYCHOK OK 

_start_ = 'start' # PYCHOK OK 

_std_ = 'std' # PYCHOK OK 

_stdev_ = 'stdev' # PYCHOK OK 

_supported_ = 'supported' # PYCHOK OK 

_sx_ = 'sx' # PYCHOK OK 

_sy_ = 'sy' # PYCHOK OK 

_sz_ = 'sz' # PYCHOK OK 

_tbd_ = 'tbd' # PYCHOK OK 

_TILDE_ = '~' # PYCHOK OK 

_till_ = 'till' # PYCHOK OK 

_to_ = 'to' # PYCHOK OK 

_tolerance_ = _Prefix('tolerance') # PYCHOK OK 

_too_ = _Prefix('too') # PYCHOK OK 

_transform_ = 'transform' # PYCHOK OK 

_tx_ = 'tx' # PYCHOK OK 

_ty_ = 'ty' # PYCHOK OK 

_tz_ = 'tz' # PYCHOK OK 

_UNDER_ = Str_('_') # PYCHOK OK 

 

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

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

''' 

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

 

_units_ = 'units' # PYCHOK OK 

_up_ = 'up' # PYCHOK OK 

_UPS_ = 'UPS' # PYCHOK OK 

_utf_8_ = 'utf-8' # PYCHOK OK 

_UTM_ = 'UTM' # PYCHOK OK 

_V_ = 'V' # PYCHOK OK 

_valid_ = 'valid' # PYCHOK OK 

_value_ = 'value' # PYCHOK OK 

_version_ = 'version' # PYCHOK OK 

_vs_ = 'vs' # PYCHOK OK 

_W_ = 'W' # PYCHOK OK 

_WGS72_ = 'WGS72' # PYCHOK OK 

_WGS84_ = 'WGS84' # PYCHOK OK 

_width_ = 'width' # PYCHOK OK 

_with_ = 'with' # PYCHOK OK 

_x_ = 'x' # PYCHOK OK 

_X_ = 'X' # PYCHOK OK 

_xyz_ = 'xyz' # PYCHOK OK 

_y_ = 'y' # PYCHOK OK 

_Y_ = 'Y' # PYCHOK OK 

_z_ = 'z' # PYCHOK OK 

_Z_ = 'Z' # PYCHOK OK 

_zone_ = 'zone' # PYCHOK OK 

 

_EW_ = _E_ + _W_ # PYCHOK common cardinals 

_NE_ = _N_ + _E_ # PYCHOK positive ones 

_NS_ = _N_ + _S_ # PYCHOK OK 

_NSEW_ = _NS_ + _EW_ # PYCHOK OK 

_NW_ = _N_ + _W_ # PYCHOK OK 

_SE_ = _S_ + _E_ # PYCHOK OK 

_SW_ = _S_ + _W_ # PYCHOK negative ones 

# _NESW_ = _NE_ + _SW_ # PYCHOK clockwise 

 

_DDOT_ = Str_(_DOT_ * 2) # PYCHOK OK 

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

_DNL_ = Str_(_NL_ * 2) # PYCHOK OK 

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

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

_DUNDER_ = Str_(_UNDER_ * 2) # PYCHOK OK 

 

_LR_PAIRS = {_LANGLE_: _RANGLE_, 

_LCURLY_: _RCURLY_, 

_LPAREN_: _RPAREN_, 

_LSQUARE_: _RSQUARE_} # PYCHOK OK 

 

 

def _dunder_nameof(inst, *dflt): 

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

''' 

try: 

return inst.__name__ 

except AttributeError: 

pass 

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

 

 

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

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

''' 

if len(strs.split()) > 1: 

strs = NN(quote, strs, quote) 

return strs 

 

 

def _load_lib(name): 

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

''' 

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

# system libraries, instead it installs the library after a 

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

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

# any library not previously dlopen'ed. 

from ctypes import CDLL 

from ctypes.util import find_library 

from sys import platform 

 

ns = find_library(name), name 

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

from ctypes import _dlopen 

from os.path import join 

ns += (_DOT_(name, 'dylib'), 

_DOT_(name, 'framework'), join( 

_DOT_(name, 'framework'), name)) 

else: # non-macOS 

def _dlopen(unused): 

return True 

 

for n in ns: 

try: 

if n and _dlopen(n): # handle 

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

if lib._name: # has a qualified name 

return lib 

except (AttributeError, OSError): 

pass 

 

return None # raise OSError 

 

 

def machine(): 

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

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

 

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

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

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

''' 

return _platform2()[1] 

 

 

def _platform2(sep=NN): 

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

''' 

global _pl2List 

if _pl2List is None: 

import platform 

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

m = m.replace(_COMMA_, _UNDER_) 

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

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

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

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

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

\ 

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

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

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

m] # arm64, arm64_x86_64, x86_64, etc. 

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

 

 

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

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

''' 

global _Py3List 

if _Py3List is None: 

from sys import version # XXX shadows? 

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

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

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

_Py3List.insert(0, NN(_PyPy__, v)) 

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

 

 

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

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

string into a C{tuple} of stripped strings. 

''' 

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

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

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

 

 

def _sysctl_uint(name): 

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

''' 

libc = _load_lib('libc') 

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

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

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

u = c_uint(0) 

z = c_size_t(sizeof(u)) 

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

else: # could find or load 'libc' 

r = -2 

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

 

 

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

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

''' 

import os, sys # PYCHOK imports 

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

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

.replace(os.sep, _DOT_).strip() 

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

if x == '.py' and b != '__main__': 

m = _DOT_(m, b) 

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

 

 

def _version2(version, n=2): 

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

''' 

def _int(*vs): 

for v in vs: 

try: 

yield int(v) 

except (TypeError, ValueError): 

pass 

 

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

return t[:n] 

 

 

__all__ = (_NN_, # not MISSING! 

Str_.__name__, # classes 

machine.__name__) # in .lazily 

__version__ = '23.03.12' 

 

if __name__ == '__main__': 

 

from pygeodesy.errors import itemsorted 

from pygeodesy.lazily import printf 

 

t = b = 0 

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

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

not n.startswith(_DUNDER_): 

t += 1 

b += len(v) 

m = n[1:-1] 

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

printf('%4d: %s = %r', t, n, v) 

n = len(locals()) 

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

 

# **) MIT License 

# 

# Copyright (C) 2016-2023 -- 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.