Coverage for c:\ned\py\path

# Coverage for c:\ned\py\path : 40%

## 286 statements 114 run 0 excluded 172 missing

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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 | """ path.py - An object representing a path to a file or directory. Example: from path import path d = path('/home/guido/bin') for f in d.files('*.py'): f.chmod(0755) This module requires Python 2.2 or later. URL: http://www.jorendorff.com/articles/python/path Author: Jason Orendorff <jason@jorendorff.com> (and others - see the url!) Date: 29 Feb 2004 """ # TODO # - Bug in write_text(). It doesn't support Universal newline mode. # - Better error message in listdir() when self isn't a # directory. (On Windows, the error message really sucks.) # - Make sure everything has a good docstring. # - Add methods for regex find and replace. # - guess_content_type() method? # - Perhaps support arguments to touch(). # - Could add split() and join() methods that generate warnings. # - Note: __add__() technically has a bug, I think, where # it doesn't play nice with other types that implement # __radd__(). Test this. from __future__ import generators import sys, os, fnmatch, glob, shutil, codecs __version__ = '2.0.2' __all__ = ['path'] # Pre-2.3 support. Are unicode filenames supported? _base = str try: if os.path.supports_unicode_filenames: _base = unicode except AttributeError: pass # Pre-2.3 workaround for basestring. try: basestring except NameError: basestring = (str, unicode) # Universal newline support _textmode = 'r' if hasattr(file, 'newlines'): _textmode = 'U' class path(_base): """ Represents a filesystem path. For documentation on individual methods, consult their counterparts in os.path. """ # --- Special Python methods. def __repr__(self): return 'path(%s)' % _base.__repr__(self) # Adding a path and a string yields a path. def __add__(self, more): return path(_base(self) + more) def __radd__(self, other): return path(other + _base(self)) # The / operator joins paths. def __div__(self, rel): """ fp.__div__(rel) == fp / rel == fp.joinpath(rel) Join two path components, adding a separator character if needed. """ return path(os.path.join(self, rel)) # Make the / operator work even when true division is enabled. __truediv__ = __div__ def getcwd(): """ Return the current working directory as a path object. """ return path(os.getcwd()) getcwd = staticmethod(getcwd) # --- Operations on path strings. def abspath(self): return path(os.path.abspath(self)) def normcase(self): return path(os.path.normcase(self)) def normpath(self): return path(os.path.normpath(self)) def realpath(self): return path(os.path.realpath(self)) def expanduser(self): return path(os.path.expanduser(self)) def expandvars(self): return path(os.path.expandvars(self)) def dirname(self): return path(os.path.dirname(self)) basename = os.path.basename def expand(self): """ Clean up a filename by calling expandvars(), expanduser(), and normpath() on it. This is commonly everything needed to clean up a filename read from a configuration file, for example. """ return self.expandvars().expanduser().normpath() def _get_namebase(self): base, ext = os.path.splitext(self.name) return base def _get_ext(self): f, ext = os.path.splitext(_base(self)) return ext def _get_drive(self): drive, r = os.path.splitdrive(self) return path(drive) parent = property( dirname, None, None, """ This path's parent directory, as a new path object. For example, path('/usr/local/lib/libpython.so').parent == path('/usr/local/lib') """) name = property( basename, None, None, """ The name of this file or directory without the full path. For example, path('/usr/local/lib/libpython.so').name == 'libpython.so' """) namebase = property( _get_namebase, None, None, """ The same as path.name, but with one file extension stripped off. For example, path('/home/guido/python.tar.gz').name == 'python.tar.gz', but path('/home/guido/python.tar.gz').namebase == 'python.tar' """) ext = property( _get_ext, None, None, """ The file extension, for example '.py'. """) drive = property( _get_drive, None, None, """ The drive specifier, for example 'C:'. This is always empty on systems that don't use drive specifiers. """) def splitpath(self): """ p.splitpath() -> Return (p.parent, p.name). """ parent, child = os.path.split(self) return path(parent), child def splitdrive(self): """ p.splitdrive() -> Return (p.drive, <the rest of p>). Split the drive specifier from this path. If there is no drive specifier, p.drive is empty, so the return value is simply (path(''), p). This is always the case on Unix. """ drive, rel = os.path.splitdrive(self) return path(drive), rel def splitext(self): """ p.splitext() -> Return (p.stripext(), p.ext). Split the filename extension from this path and return the two parts. Either part may be empty. The extension is everything from '.' to the end of the last path segment. This has the property that if (a, b) == p.splitext(), then a + b == p. """ # Cast to plain string using _base because Python 2.2 # implementations of os.path.splitext use "for c in path:..." # which means something different when applied to a path # object. filename, ext = os.path.splitext(_base(self)) return path(filename), ext def stripext(self): """ p.stripext() -> Remove one file extension from the path. For example, path('/home/guido/python.tar.gz').stripext() returns path('/home/guido/python.tar'). """ return self.splitext()[0] if hasattr(os.path, 'splitunc'): def splitunc(self): unc, rest = os.path.splitunc(self) return path(unc), rest def _get_uncshare(self): unc, r = os.path.splitunc(self) return path(unc) uncshare = property( _get_uncshare, None, None, """ The UNC mount point for this path. This is empty for paths on local drives. """) def joinpath(self, *args): """ Join two or more path components, adding a separator character (os.sep) if needed. Returns a new path object. """ return path(os.path.join(self, *args)) def splitall(self): """ Return a list of the path components in this path. The first item in the list will be a path. Its value will be either os.curdir, os.pardir, empty, or the root directory of this path (for example, '/' or 'C:\\'). The other items in the list will be strings. path.path.joinpath(*result) will yield the original path. """ parts = [] loc = self while loc != os.curdir and loc != os.pardir: prev = loc loc, child = prev.splitpath() if loc == prev: break parts.append(child) parts.append(loc) parts.reverse() return parts def relpath(self): """ Return this path as a relative path, based from the current working directory. """ cwd = path(os.getcwd()) return cwd.relpathto(self) def relpathto(self, dest): """ Return a relative path from self to dest. If there is no relative path from self to dest, for example if they reside on different drives in Windows, then this returns dest.abspath(). """ origin = self.abspath() dest = path(dest).abspath() orig_list = origin.normcase().splitall() # Don't normcase dest! We want to preserve the case. dest_list = dest.splitall() if orig_list[0] != os.path.normcase(dest_list[0]): # Can't get here from there. return dest # Find the location where the two paths start to differ. i = 0 for start_seg, dest_seg in zip(orig_list, dest_list): if start_seg != os.path.normcase(dest_seg): break i += 1 # Now i is the point where the two paths diverge. # Need a certain number of "os.pardir"s to work up # from the origin to the point of divergence. segments = [os.pardir] * (len(orig_list) - i) # Need to add the diverging part of dest_list. segments += dest_list[i:] if len(segments) == 0: # If they happen to be identical, use os.curdir. return path(os.curdir) else: return path(os.path.join(*segments)) # --- Listing, searching, walking, and matching def listdir(self, pattern=None): """ D.listdir() -> List of items in this directory. Use D.files() or D.dirs() instead if you want a listing of just files or just subdirectories. The elements of the list are path objects. With the optional 'pattern' argument, this only lists items whose names match the given pattern. """ names = os.listdir(self) if pattern is not None: names = fnmatch.filter(names, pattern) return [self / child for child in names] def dirs(self, pattern=None): """ D.dirs() -> List of this directory's subdirectories. The elements of the list are path objects. This does not walk recursively into subdirectories (but see path.walkdirs). With the optional 'pattern' argument, this only lists directories whose names match the given pattern. For example, d.dirs('build-*'). """ return [p for p in self.listdir(pattern) if p.isdir()] def files(self, pattern=None): """ D.files() -> List of the files in this directory. The elements of the list are path objects. This does not walk into subdirectories (see path.walkfiles). With the optional 'pattern' argument, this only lists files whose names match the given pattern. For example, d.files('*.pyc'). """ return [p for p in self.listdir(pattern) if p.isfile()] def walk(self, pattern=None): """ D.walk() -> iterator over files and subdirs, recursively. The iterator yields path objects naming each child item of this directory and its descendants. This requires that D.isdir(). This performs a depth-first traversal of the directory tree. Each directory is returned just before all its children. """ for child in self.listdir(): if pattern is None or child.fnmatch(pattern): yield child if child.isdir(): for item in child.walk(pattern): yield item def walkdirs(self, pattern=None): """ D.walkdirs() -> iterator over subdirs, recursively. With the optional 'pattern' argument, this yields only directories whose names match the given pattern. For example, mydir.walkdirs('*test') yields only directories with names ending in 'test'. """ for child in self.dirs(): if pattern is None or child.fnmatch(pattern): yield child for subsubdir in child.walkdirs(pattern): yield subsubdir def walkfiles(self, pattern=None): """ D.walkfiles() -> iterator over files in D, recursively. The optional argument, pattern, limits the results to files with names that match the pattern. For example, mydir.walkfiles('*.tmp') yields only files with the .tmp extension. """ for child in self.listdir(): if child.isfile(): if pattern is None or child.fnmatch(pattern): yield child elif child.isdir(): for f in child.walkfiles(pattern): yield f def fnmatch(self, pattern): """ Return True if self.name matches the given pattern. pattern - A filename pattern with wildcards, for example '*.py'. """ return fnmatch.fnmatch(self.name, pattern) def glob(self, pattern): """ Return a list of path objects that match the pattern. pattern - a path relative to this directory, with wildcards. For example, path('/users').glob('*/bin/*') returns a list of all the files users have in their bin directories. """ return map(path, glob.glob(_base(self / pattern))) # --- Reading or writing an entire file at once. def open(self, mode='r'): """ Open this file. Return a file object. """ return file(self, mode) def bytes(self): """ Open this file, read all bytes, return them as a string. """ f = self.open('rb') try: return f.read() finally: f.close() def write_bytes(self, bytes, append=False): """ Open this file and write the given bytes to it. Default behavior is to overwrite any existing file. Call this with write_bytes(bytes, append=True) to append instead. """ if append: mode = 'ab' else: mode = 'wb' f = self.open(mode) try: f.write(bytes) finally: f.close() def text(self, encoding=None, errors='strict'): """ Open this file, read it in, return the content as a string. This uses 'U' mode in Python 2.3 and later, so '\r\n' and '\r' are automatically translated to '\n'. Optional arguments: encoding - The Unicode encoding (or character set) of the file. If present, the content of the file is decoded and returned as a unicode object; otherwise it is returned as an 8-bit str. errors - How to handle Unicode errors; see help(str.decode) for the options. Default is 'strict'. """ if encoding is None: # 8-bit f = self.open(_textmode) try: return f.read() finally: f.close() else: # Unicode f = codecs.open(self, 'r', encoding, errors) # (Note - Can't use 'U' mode here, since codecs.open # doesn't support 'U' mode, even in Python 2.3.) try: t = f.read() finally: f.close() return t.replace(u'\r\n', u'\n').replace(u'\r', u'\n') def write_text(self, text, encoding=None, errors='strict', append=False): """ Write the given text to this file. The default behavior is to overwrite any existing file; to append instead, use the 'append=True' keyword argument. There are two differences between path.write_text() and path.write_bytes(): Unicode handling and newline handling. --- Unicode If 'text' isn't Unicode, this essentially just does open(self, 'w').write(text). The 'encoding' and 'errors' arguments are ignored. If 'text' is Unicode, it is first converted to bytes using the specified 'encoding' (or the default encoding if 'encoding' isn't specified). The 'errors' argument applies only to this conversion. --- Newlines write_text() converts from programmer-friendly newlines (always '\n') to platform-specific newlines (see os.linesep; on Windows, for example, the end-of-line marker is '\r\n'). This applies to Unicode text the same as to 8-bit text. Because of this conversion, the text should only contain plain newlines ('\n'), just like the return value of path.text(). If the text contains the characters '\r\n', it may be written as '\r\r\n' or '\r\r' depending on your platform. (This is exactly the same as when you open a file for writing with fopen(filename, "w") in C or file(filename, 'w') in Python.) """ if isinstance(text, unicode): text = text.replace(u'\n', os.linesep) if encoding is None: encoding = sys.getdefaultencoding() bytes = text.encode(encoding, errors) self.write_bytes(bytes, append) else: if append: mode = 'a' else: mode = 'w' f = self.open(mode) try: f.write(text) finally: f.close() def lines(self, encoding=None, errors='strict', retain=True): """ Open this file, read all lines, return them in a list. Optional arguments: encoding - The Unicode encoding (or character set) of the file. The default is None, meaning the content of the file is read as 8-bit characters and returned as a list of (non-Unicode) str objects. errors - How to handle Unicode errors; see help(str.decode) for the options. Default is 'strict' retain - If true, retain newline characters; but all newline character combinations ('\r', '\n', '\r\n') are translated to '\n'. If false, newline characters are stripped off. Default is True. This uses 'U' mode in Python 2.3 and later. """ if encoding is None and retain: f = self.open(_textmode) try: return f.readlines() finally: f.close() else: return self.text(encoding, errors).splitlines(retain) def write_lines(self, lines, encoding=None, errors='strict', linesep=os.linesep): """ Overwrite this file with the given lines of text. lines - A list of strings. encoding - A Unicode encoding to use. This applies only if 'lines' contains any Unicode strings. errors - How to handle errors in Unicode encoding. This also applies only to Unicode strings. linesep - A character sequence that will be added at the end of every line that doesn't already have it. """ f = self.open('wb') try: for line in lines: if not line.endswith(linesep): line += linesep if isinstance(line, unicode): if encoding is None: encoding = sys.getdefaultencoding() line = line.encode(encoding, errors=errors) f.write(line) finally: f.close() # --- Methods for querying the filesystem. exists = os.path.exists isabs = os.path.isabs isdir = os.path.isdir isfile = os.path.isfile islink = os.path.islink ismount = os.path.ismount if hasattr(os.path, 'samefile'): samefile = os.path.samefile getatime = os.path.getatime atime = property( getatime, None, None, """ Last access time of the file. """) getmtime = os.path.getmtime mtime = property( getmtime, None, None, """ Last-modified time of the file. """) if hasattr(os.path, 'getctime'): getctime = os.path.getctime ctime = property( getctime, None, None, """ Creation time of the file. """) getsize = os.path.getsize size = property( getsize, None, None, """ Size of the file, in bytes. """) if hasattr(os, 'access'): def access(self, mode): """ Return true if current user has access to this path. mode - One of the constants os.F_OK, os.R_OK, os.W_OK, os.X_OK """ return os.access(self, mode) def stat(self): """ Perform a stat() system call on this path. """ return os.stat(self) def lstat(self): """ Like path.stat(), but do not follow symbolic links. """ return os.lstat(self) if hasattr(os, 'statvfs'): def statvfs(self): """ Perform a statvfs() system call on this path. """ return os.statvfs(self) if hasattr(os, 'pathconf'): def pathconf(self, name): return os.pathconf(self, name) # --- Modifying operations on files and directories def utime(self, times): """ Set the access and modified times of this file. """ os.utime(self, times) def chmod(self, mode): os.chmod(self, mode) if hasattr(os, 'chown'): def chown(self, uid, gid): os.chown(self, uid, gid) def rename(self, new): os.rename(self, new) def renames(self, new): os.renames(self, new) # --- Create/delete operations on directories def mkdir(self, mode=0777): os.mkdir(self, mode) def makedirs(self, mode=0777): os.makedirs(self, mode) def rmdir(self): os.rmdir(self) def removedirs(self): os.removedirs(self) # --- Modifying operations on files def touch(self): """ Set the access/modified times of this file to the current time. Create the file if it does not exist. """ fd = os.open(self, os.O_WRONLY | os.O_CREAT, 0666) os.close(fd) os.utime(self, None) def remove(self): os.remove(self) def unlink(self): os.unlink(self) # --- Links if hasattr(os, 'link'): def link(self, newpath): """ Create a hard link at 'newpath', pointing to this file. """ os.link(self, newpath) if hasattr(os, 'symlink'): def symlink(self, newlink): """ Create a symbolic link at 'newlink', pointing here. """ os.symlink(self, newlink) if hasattr(os, 'readlink'): def readlink(self): """ Return the path to which this symbolic link points. The result may be an absolute or a relative path. """ return path(os.readlink(self)) def readlinkabs(self): """ Return the path to which this symbolic link points. The result is always an absolute path. """ p = self.readlink() if p.isabs(): return p else: return (self.parent / p).abspath() # --- High-level functions from shutil copyfile = shutil.copyfile copymode = shutil.copymode copystat = shutil.copystat copy = shutil.copy copy2 = shutil.copy2 copytree = shutil.copytree if hasattr(shutil, 'move'): move = shutil.move rmtree = shutil.rmtree # --- Special stuff from os if hasattr(os, 'chroot'): def chroot(self): os.chroot(self) if hasattr(os, 'startfile'): def startfile(self): os.startfile(self)