Mercurial > hg > config
annotate python/tree.py @ 426:866c5b1bc4e8
stubbing
| author | Jeff Hammel <jhammel@mozilla.com> |
|---|---|
| date | Tue, 06 Aug 2013 18:30:15 -0700 |
| parents | 5417eb6364ee |
| children | 9b7f5e31b465 |
| rev | line source |
|---|---|
| 382 | 1 #!/usr/bin/env python |
| 2 # -*- coding: utf-8 -*- | |
| 3 | |
| 4 """ | |
| 5 tree in python | |
| 6 """ | |
| 7 | |
| 425 | 8 # TODO: script2package |
| 9 | |
| 382 | 10 import optparse |
| 11 import os | |
| 12 import sys | |
| 13 | |
| 387 | 14 # ASCII delimeters |
| 388 | 15 ascii_delimeters = { |
| 389 | 16 'vertical_line' : '|', |
| 17 'item_marker' : '+', | |
| 18 'last_child' : '\\' | |
| 388 | 19 } |
| 387 | 20 |
| 21 # unicode delimiters | |
| 389 | 22 unicode_delimeters = { |
| 23 'vertical_line' : '│', | |
| 24 'item_marker' : '├', | |
| 25 'last_child' : '└' | |
| 26 } | |
| 382 | 27 |
| 425 | 28 |
| 382 | 29 def depth(directory): |
| 387 | 30 """returns the integer depth of a directory or path relative to '/' """ |
| 31 | |
| 382 | 32 directory = os.path.abspath(directory) |
| 33 level = 0 | |
| 34 while True: | |
| 35 directory, remainder = os.path.split(directory) | |
| 36 level += 1 | |
| 37 if not remainder: | |
| 38 break | |
| 39 return level | |
| 40 | |
| 425 | 41 |
| 42 ### stuff for tree generalization | |
| 43 | |
| 44 class Tree(object): | |
| 45 """tree structure in python""" | |
| 46 | |
| 47 def __init__(self, parent=None): | |
| 48 self.parent = parent | |
| 426 | 49 self._children = [] |
| 425 | 50 |
| 51 def children(self): | |
| 52 """returns children of the tree""" | |
| 426 | 53 return self._children # base implementation |
| 425 | 54 |
| 55 def add(self, item): | |
| 56 """add a child to the tree root""" | |
| 57 | |
| 58 def update(self, tree): | |
| 59 """add a subtree to the tree""" | |
| 60 self.add(tree) | |
| 61 tree.parent = self # XXX .add should probably do this for scary reasons | |
| 62 | |
| 63 def output(self, serializer): | |
| 64 """output the tree via the given serializer""" | |
| 65 # XXX or should this method exist at all and instead the | |
| 66 # __call__ method of serializers take a Tree object? | |
| 67 | |
| 68 class DirectoryTree(Tree): | |
| 69 """directory structure as a tree""" | |
| 70 | |
| 71 ### | |
| 72 | |
| 388 | 73 def tree(directory, |
| 389 | 74 item_marker=unicode_delimeters['item_marker'], |
| 75 vertical_line=unicode_delimeters['vertical_line'], | |
| 76 last_child=unicode_delimeters['last_child'], | |
| 388 | 77 sort_key=lambda x: x.lower()): |
| 78 """ | |
| 79 display tree directory structure for `directory` | |
| 80 """ | |
|
383
8d1ad56761b0
this still, somehow, eludes my tired brain
Jeff Hammel <jhammel@mozilla.com>
parents:
382
diff
changeset
|
81 |
| 385 | 82 retval = [] |
|
383
8d1ad56761b0
this still, somehow, eludes my tired brain
Jeff Hammel <jhammel@mozilla.com>
parents:
382
diff
changeset
|
83 indent = [] |
| 384 | 84 last = {} |
| 386 | 85 top = depth(directory) |
| 86 | |
| 382 | 87 for dirpath, dirnames, filenames in os.walk(directory, topdown=True): |
|
383
8d1ad56761b0
this still, somehow, eludes my tired brain
Jeff Hammel <jhammel@mozilla.com>
parents:
382
diff
changeset
|
88 |
|
8d1ad56761b0
this still, somehow, eludes my tired brain
Jeff Hammel <jhammel@mozilla.com>
parents:
382
diff
changeset
|
89 abspath = os.path.abspath(dirpath) |
| 384 | 90 basename = os.path.basename(abspath) |
| 91 parent = os.path.dirname(abspath) | |
|
383
8d1ad56761b0
this still, somehow, eludes my tired brain
Jeff Hammel <jhammel@mozilla.com>
parents:
382
diff
changeset
|
92 level = depth(abspath) - top |
|
8d1ad56761b0
this still, somehow, eludes my tired brain
Jeff Hammel <jhammel@mozilla.com>
parents:
382
diff
changeset
|
93 |
|
8d1ad56761b0
this still, somehow, eludes my tired brain
Jeff Hammel <jhammel@mozilla.com>
parents:
382
diff
changeset
|
94 # sort articles of interest |
|
8d1ad56761b0
this still, somehow, eludes my tired brain
Jeff Hammel <jhammel@mozilla.com>
parents:
382
diff
changeset
|
95 for resource in (dirnames, filenames): |
|
8d1ad56761b0
this still, somehow, eludes my tired brain
Jeff Hammel <jhammel@mozilla.com>
parents:
382
diff
changeset
|
96 resource[:] = sorted(resource, key=sort_key) |
| 382 | 97 |
| 389 | 98 files_end = item_marker |
| 99 dirpath_marker = item_marker | |
| 385 | 100 |
| 101 if level > len(indent): | |
| 389 | 102 indent.append(vertical_line) |
| 385 | 103 indent = indent[:level] |
| 104 | |
|
383
8d1ad56761b0
this still, somehow, eludes my tired brain
Jeff Hammel <jhammel@mozilla.com>
parents:
382
diff
changeset
|
105 if dirnames: |
| 389 | 106 files_end = item_marker |
| 385 | 107 last[abspath] = dirnames[-1] |
| 108 else: | |
| 389 | 109 files_end = last_child |
| 384 | 110 |
| 385 | 111 if last.get(parent) == os.path.basename(abspath): |
| 112 # last directory of parent | |
| 389 | 113 dirpath_mark = last_child |
| 385 | 114 indent[-1] = ' ' |
| 115 elif not indent: | |
| 116 dirpath_mark = '' | |
| 117 else: | |
| 389 | 118 dirpath_mark = item_marker |
| 385 | 119 |
| 388 | 120 # append the directory and piece of tree structure |
| 121 # if the top-level entry directory, print as passed | |
| 122 retval.append('%s%s%s'% (''.join(indent[:-1]), | |
| 123 dirpath_mark, | |
| 124 basename if retval else directory)) | |
| 125 # add the files | |
| 385 | 126 if filenames: |
| 127 last_file = filenames[-1] | |
| 387 | 128 retval.extend([('%s%s%s' % (''.join(indent), |
| 389 | 129 files_end if filename == last_file else item_marker, |
| 385 | 130 filename)) |
| 131 for index, filename in enumerate(filenames)]) | |
| 132 | |
| 382 | 133 return '\n'.join(retval) |
| 134 | |
| 135 def main(args=sys.argv[1:]): | |
| 136 | |
|
390
9d02187611ae
make delimeters CLI switchable
Jeff Hammel <jhammel@mozilla.com>
parents:
389
diff
changeset
|
137 # parse command line options |
| 382 | 138 usage = '%prog [options]' |
| 139 parser = optparse.OptionParser(usage=usage, description=__doc__) | |
|
390
9d02187611ae
make delimeters CLI switchable
Jeff Hammel <jhammel@mozilla.com>
parents:
389
diff
changeset
|
140 parser.add_option('-a', '--ascii', dest='use_ascii', |
|
9d02187611ae
make delimeters CLI switchable
Jeff Hammel <jhammel@mozilla.com>
parents:
389
diff
changeset
|
141 action='store_true', default=False, |
|
9d02187611ae
make delimeters CLI switchable
Jeff Hammel <jhammel@mozilla.com>
parents:
389
diff
changeset
|
142 help="use ascii delimeters (%s)" % ascii_delimeters) |
| 382 | 143 options, args = parser.parse_args(args) |
| 144 if not args: | |
| 145 args = ['.'] | |
| 146 | |
|
390
9d02187611ae
make delimeters CLI switchable
Jeff Hammel <jhammel@mozilla.com>
parents:
389
diff
changeset
|
147 # sanity check |
| 382 | 148 not_directory = [arg for arg in args |
| 149 if not os.path.isdir(arg)] | |
| 150 if not_directory: | |
| 151 parser.error("Not a directory: %s" % (', '.join(not_directory))) | |
| 152 | |
|
390
9d02187611ae
make delimeters CLI switchable
Jeff Hammel <jhammel@mozilla.com>
parents:
389
diff
changeset
|
153 delimeters = unicode_delimeters |
|
9d02187611ae
make delimeters CLI switchable
Jeff Hammel <jhammel@mozilla.com>
parents:
389
diff
changeset
|
154 if options.use_ascii: |
|
9d02187611ae
make delimeters CLI switchable
Jeff Hammel <jhammel@mozilla.com>
parents:
389
diff
changeset
|
155 delimeters = ascii_delimeters |
|
9d02187611ae
make delimeters CLI switchable
Jeff Hammel <jhammel@mozilla.com>
parents:
389
diff
changeset
|
156 |
|
9d02187611ae
make delimeters CLI switchable
Jeff Hammel <jhammel@mozilla.com>
parents:
389
diff
changeset
|
157 # print the tree |
| 382 | 158 for arg in args: |
|
390
9d02187611ae
make delimeters CLI switchable
Jeff Hammel <jhammel@mozilla.com>
parents:
389
diff
changeset
|
159 print (tree(arg, **delimeters)) |
| 382 | 160 |
| 161 if __name__ == '__main__': | |
| 162 main() |