third_party/waf/waflib/extras/unc.py

   1 #! /usr/bin/env python
   2 # encoding: utf-8
   3 # Thomas Nagy, 2014 (ita)
   4
   5 """
   6 This module enables automatic handling of network paths of the form \\server\share for both input
   7 and output files. While a typical script may require the following::
   8
   9         import os
  10         def build(bld):
  11
  12                 node = bld.root.make_node('\\\\COMPUTER\\share\\test.txt')
  13
  14                 # mark the server/share levels as folders
  15                 k = node.parent
  16                 while k:
  17                         k.cache_isdir = True
  18                         k = k.parent
  19
  20                 # clear the file if removed
  21                 if not os.path.isfile(node.abspath()):
  22                         node.sig = None
  23
  24                 # create the folder structure
  25                 if node.parent.height() > 2:
  26                         node.parent.mkdir()
  27
  28                 # then the task generator
  29                 def myfun(tsk):
  30                         tsk.outputs[0].write("data")
  31                 bld(rule=myfun, source='wscript', target=[nd])
  32
  33 this tool will make the process much easier, for example::
  34
  35         def configure(conf):
  36                 conf.load('unc') # do not import the module directly
  37
  38         def build(bld):
  39                 def myfun(tsk):
  40                         tsk.outputs[0].write("data")
  41                 bld(rule=myfun, update_outputs=True,
  42                         source='wscript',
  43                         target='\\\\COMPUTER\\share\\test.txt')
  44                 bld(rule=myfun, update_outputs=True,
  45                         source='\\\\COMPUTER\\share\\test.txt',
  46                         target='\\\\COMPUTER\\share\\test2.txt')
  47 """
  48
  49 import os
  50 from waflib import Node, Utils, Context
  51
  52 def find_resource(self, lst):
  53         if isinstance(lst, str):
  54                 lst = [x for x in Node.split_path(lst) if x and x != '.']
  55
  56         if lst[0].startswith('\\\\'):
  57                 if len(lst) < 3:
  58                         return None
  59                 node = self.ctx.root.make_node(lst[0]).make_node(lst[1])
  60                 node.cache_isdir = True
  61                 node.parent.cache_isdir = True
  62
  63                 ret = node.search_node(lst[2:])
  64                 if not ret:
  65                         ret = node.find_node(lst[2:])
  66                 if ret and os.path.isdir(ret.abspath()):
  67                         return None
  68                 return ret
  69
  70         return self.find_resource_orig(lst)
  71
  72 def find_or_declare(self, lst):
  73         if isinstance(lst, str):
  74                 lst = [x for x in Node.split_path(lst) if x and x != '.']
  75
  76         if lst[0].startswith('\\\\'):
  77                 if len(lst) < 3:
  78                         return None
  79                 node = self.ctx.root.make_node(lst[0]).make_node(lst[1])
  80                 node.cache_isdir = True
  81                 node.parent.cache_isdir = True
  82                 ret = node.find_node(lst[2:])
  83                 if not ret:
  84                         ret = node.make_node(lst[2:])
  85                 if not os.path.isfile(ret.abspath()):
  86                         ret.sig = None
  87                         ret.parent.mkdir()
  88                 return ret
  89
  90         return self.find_or_declare_orig(lst)
  91
  92 def abspath(self):
  93         """For MAX_PATH limitations"""
  94         ret = self.abspath_orig()
  95         if not ret.startswith("\\"):
  96                 return "\\\\?\\" + ret
  97         return ret
  98
  99 if Utils.is_win32:
 100         Node.Node.find_resource_orig = Node.Node.find_resource
 101         Node.Node.find_resource = find_resource
 102
 103         Node.Node.find_or_declare_orig = Node.Node.find_or_declare
 104         Node.Node.find_or_declare = find_or_declare
 105
 106         Node.Node.abspath_orig = Node.Node.abspath
 107         Node.Node.abspath = abspath
 108
 109         for k in list(Context.cache_modules.keys()):
 110                 Context.cache_modules["\\\\?\\" + k] = Context.cache_modules[k]