# Coverage for pygeodesy/streprs.py : 98%

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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 | # -*- coding: utf-8 -*- u'''Floating point and other formatting utilities. ''' from pygeodesy.basics import isint, isscalar from pygeodesy.errors import _IsnotError, _ValueError, _xkwds_pop from pygeodesy.interns import _COMMA_SPACE_, _DOT_, _EQUAL_, \ _item_ps, NN, _PERCENT_, _scalar_, \ _SPACE_, _STAR_, _UNDERSCORE_, _0_ from pygeodesy.lazily import _ALL_LAZY __all__ = _ALL_LAZY.streprs __version__ = '20.07.08' # formats %G and %.g drop all trailing zeros and the # decimal point making the float appear as an int _e = 'e' # imported by .datum _E = 'E' _g = 'g' # imported by .units _Gg = ('G', _g) _EeFfGg = ('F', 'f', _E, _e) + _Gg # float formats _Fmt = 'F' # imported by .datum, .named def _streprs(prec, objs, fmt, ints, force, strepr): '''(INTERNAL) Helper for C{fstr}, C{pairs}, C{reprs} and C{strs} ''' if fmt in _EeFfGg: fGg = fmt in _Gg fmt = '%.' + str(abs(prec)) + fmt elif fmt.startswith(_PERCENT_): fGg = False fmt = fmt.replace(_STAR_, str(abs(prec))) else: t = '[%s]%s' % ('%.*', '|'.join(_EeFfGg)) raise _ValueError(fmt=fmt, txt='not %r' % (t,)) 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='._-', sub=_UNDERSCORE_): '''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 and 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, **kwds): # prec=6, fmt=_Fmt, ints=False, Nones=True, sep=_EQUAL_ '''Get instance attributes as I{name=value} strings, with C{float}s handled like L{fstr}. @arg inst: The instance (any C{type}). @arg names: The attribute names (C{str}s). @kwarg kwds: Keyword argument for function L{pairs}, except B{C{Nones=True}} to in-/exclude missing or attributes with a C{None} I{value}. @return: A C{tuple(sep.join(t) for t in zip(names, reprs(values, ...)))} of C{str}s. ''' Nones = _xkwds_pop(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(), **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}). @arg extras: Optional leading items (C{str}s). @return: B{C{extras}} + 2-Tuple C{(eastingStr, northingStr)}. @raise ValueError: Invalid B{C{prec}}. ''' w = prec // 2 try: p10 = (1e-4, 1e-3, 1e-2, 1e-1, 1)[w - 1] # 10**(5 - w) except IndexError: raise _ValueError(prec=prec) return extras + ('%0*d' % (w, int(easting * p10)), '%0*d' % (w, int(northing * p10))) def fstr(floats, prec=6, fmt=_Fmt, ints=False, sep=_COMMA_SPACE_, 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. @kwarg fmt: Optional, float format (C{str}). @kwarg ints: Optionally, remove the decimal dot (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): floats = (floats,) return sep.join(_streprs(prec, floats, fmt, ints, True, strepr)) 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(_e) if e < 0: e = efstr.rfind(_E) if e < 0: e = len(efstr) s += 2 # keep 1st _DOT_ + _0_ if s < e and efstr[e-1] == _0_: efstr = efstr[:s] + efstr[s:e].rstrip(_0_) + efstr[e:] elif ap1z: # %.G and %.g formats 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(_e) if e < 0: e = efstr.rfind(_E) if e > 0: efstr = efstr[:e] + _DOT_ + _0_ + efstr[e:] return efstr def hstr(height, prec=2, fmt='%+.*f', 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, float format (C{str}). @kwarg ints: Optionally, remove the decimal dot (C{bool}). @kwarg m: Optional unit of the height (C{str}). ''' h = next(_streprs(prec, (height,), fmt, ints, True, None)) return h if not m else (h + str(m)) 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, 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, float format (C{str}). @kwarg ints: Optionally, remove the decimal dot (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, 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, float format (C{str}). @kwarg ints: Optionally, remove the decimal dot (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, 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, float format (C{str}). @kwarg ints: Optionally, remove the decimal dot (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(name, *args, **kwds): '''Return the string representation of an invokation. @arg name: 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=_g) + pairs(sorted(kwds.items())) return _item_ps(name, _COMMA_SPACE_.join(t)) # **) MIT License # # Copyright (C) 2016-2020 -- 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.