13 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  14 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  15 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  16 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  17 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  18 # THE SOFTWARE
  19 #
  20 # Copyright (c) 2013, Joyent Inc. All rights reserved.
  21 #
  22 
  23 '''
  24 Process our ignore/exception_list file format.
  25 
  26 The format is broadly similar, if not identical, to .gitignore and .hgignore
  27 files.
  28 '''
  29 
  30 import re
  31 import fnmatch
  32 


  33 #
  34 # It is important that this module not rely on Mercurial
  35 #
  36 
  37 def _read_ignore_file(ignorefile):
  38     '''Read an ignore file and return an array of regular expressions
  39     to match ignored paths.'''
  40 
  41     syntax = 'regex'
  42     ignore_list = []
  43     lc = 0
  44 
  45     f = open(ignorefile, 'r')
  46     for l in f:
  47         lc += 1
  48         # Remove comments and blank lines
  49         l = re.sub(r'#.*', '', l).strip()
  50         if l == '':
  51             continue
  52         # Process "syntax:" lines
  53         m = re.match(r'^syntax:\s*(.*)\s*$', l)
  54         if m:
  55             syntax = m.group(1)
  56             continue
  57         # All other lines are considered patterns
  58         if (syntax == 'glob'):
  59             ignore_list.append(re.compile('.*' + fnmatch.translate(l)))
  60         elif (syntax == 'regex'):
  61             ignore_list.append(re.compile(l))
  62         else:
  63             raise Exception('%s:%d: syntax "%s" is not supported' %
  64                 (ignorefile, lc, syntax))
  65     f.close()
  66     return ignore_list
  67 
  68 
  69 def ignore(root, ignorefiles):
  70     # If we aren't provided any ignore files, we'll never ignore
  71     # any paths:
  72     if (len(ignorefiles) < 1):
  73         return lambda x: False
  74 
  75     ignore_list = []
  76     for ignorefile in ignorefiles:
  77         ignore_list += _read_ignore_file(ignorefile)
  78 
  79     # If the ignore files contained no patterns, we'll never ignore
  80     # any paths:
  81     if (len(ignore_list) < 1):
  82         return lambda x: False
  83 
  84     def _ignore_func(path):
  85         for regex in ignore_list:
  86             if (regex.match(path)):
  87                 return True
  88         return False
  89 
  90     return _ignore_func
  91 
  92 # vim: set expandtab sw=4 ts=4:

  13 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  14 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  15 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  16 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  17 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  18 # THE SOFTWARE
  19 #
  20 # Copyright (c) 2013, Joyent Inc. All rights reserved.
  21 #
  22 
  23 '''
  24 Process our ignore/exception_list file format.
  25 
  26 The format is broadly similar, if not identical, to .gitignore and .hgignore
  27 files.
  28 '''
  29 
  30 import re
  31 import fnmatch
  32 
  33 RE_SYNTAX = re.compile(r'^syntax:\s*(.*)\s*$')
  34 
  35 #
  36 # It is important that this module not rely on Mercurial
  37 #
  38 
  39 def _read_ignore_file(ignorefile):
  40     '''Read an ignore file and return an array of regular expressions
  41     to match ignored paths.'''
  42 
  43     syntax = 'regex'
  44     ignore_list = []
  45     lc = 0
  46 
  47     with open(ignorefile, 'r') as f:
  48         for l in f:
  49             lc += 1
  50             # Remove comments and blank lines
  51             l = l.split('#', 2)[0].strip()
  52             if l == '':
  53                 continue
  54             # Process "syntax:" lines
  55             m = RE_SYNTAX.match(l)
  56             if m:
  57                 syntax = m.group(1)
  58                 continue
  59             # All other lines are considered patterns
  60             if (syntax == 'glob'):
  61                 ignore_list.append(re.compile('.*' + fnmatch.translate(l)))
  62             elif (syntax == 'regex'):
  63                 ignore_list.append(re.compile(l))
  64             else:
  65                 raise Exception('%s:%d: syntax "%s" is not supported' %
  66                     (ignorefile, lc, syntax))
  67 
  68     return ignore_list
  69 

  70 def ignore(root, ignorefiles):
  71     # If we aren't provided any ignore files, we'll never ignore
  72     # any paths:
  73     if (len(ignorefiles) < 1):
  74         return lambda x: False
  75 
  76     ignore_list = []
  77     for ignorefile in ignorefiles:
  78         ignore_list.extend(_read_ignore_file(ignorefile))
  79 
  80     # If the ignore files contained no patterns, we'll never ignore
  81     # any paths:
  82     if (len(ignore_list) < 1):
  83         return lambda x: False
  84 
  85     def _ignore_func(path):
  86         for regex in ignore_list:
  87             if (regex.match(path)):
  88                 return True
  89         return False
  90 
  91     return _ignore_func