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""" __revision__ = "$Id$" import os, re import fnmatch from distutils.util import convert_path from distutils.errors import DistutilsTemplateError, DistutilsInternalError from distutils import log class FileList: """A list of files built by on exploring the filesystem and filtered by applying various patterns to what we find there. Instance attributes: dir directory from which files will be taken -- only used if 'allfiles' not supplied to constructor files list of filenames currently being built/filtered/manipulated allfiles complete list of files under consideration (ie. without any filtering applied) """ def __init__(self, warn=None, debug_print=None): # ignore argument to FileList, but keep them for backwards # compatibility self.allfiles = None self.files = [] def set_allfiles(self, allfiles): self.allfiles = allfiles def findall(self, dir=os.curdir): self.allfiles = findall(dir) def debug_print(self, msg): """Print 'msg' to stdout if the global DEBUG (taken from the DISTUTILS_DEBUG environment variable) flag is true. """ from distutils.debug import DEBUG if DEBUG: print msg # -- List-like methods --------------------------------------------- def append(self, item): self.files.append(item) def extend(self, items): self.files.extend(items) def sort(self): # Not a strict lexical sort! sortable_files = map(os.path.split, self.files) sortable_files.sort() self.files = [] for sort_tuple in sortable_files: self.files.append(os.path.join(*sort_tuple)) # -- Other miscellaneous utility methods --------------------------- def remove_duplicates(self): # Assumes list has been sorted! for i in range(len(self.files) - 1, 0, -1): if self.files[i] == self.files[i - 1]: del self.files[i] # -- "File template" methods --------------------------------------- def _parse_template_line(self, line): words = line.split() action = words[0] patterns = dir = dir_pattern = None if action in ('include', 'exclude', 'global-include', 'global-exclude'): if len(words) < 2: raise DistutilsTemplateError, \ "'%s' expects ..." % action patterns = map(convert_path, words[1:]) elif action in ('recursive-include', 'recursive-exclude'): if len(words) < 3: raise DistutilsTemplateError, \ "'%s' expects ..." % action dir = convert_path(words[1]) patterns = map(convert_path, words[2:]) elif action in ('graft', 'prune'): if len(words) != 2: raise DistutilsTemplateError, \ "'%s' expects a single " % action dir_pattern = convert_path(words[1]) else: raise DistutilsTemplateError, "unknown action '%s'" % action return (action, patterns, dir, dir_pattern) def process_template_line(self, line): # Parse the line: split it up, make sure the right number of words # is there, and return the relevant words. 'action' is always # defined: it's the first word of the line. Which of the other # three are defined depends on the action; it'll be either # patterns, (dir and patterns), or (dir_pattern). action, patterns, dir, dir_pattern = self._parse_template_line(line) # OK, now we know that the action is valid and we have the # right number of words on the line for that action -- so we # can proceed with minimal error-checking. if action == 'include': self.debug_print("include " + ' '.join(patterns)) for pattern in patterns: if not self.include_pattern(pattern, anchor=1): log.warn("warning: no files found matching '%s'", pattern) elif action == 'exclude': self.debug_print("exclude " + ' '.join(patterns)) for pattern in patterns: if not self.exclude_pattern(pattern, anchor=1): log.warn(("warning: no previously-included files " "found matching '%s'"), pattern) elif action == 'global-include': self.debug_print("global-include " + ' '.join(patterns)) for pattern in patterns: if not self.include_pattern(pattern, anchor=0): log.warn(("warning: no files found matching '%s' " + "anywhere in distribution"), pattern) elif action == 'global-exclude': self.debug_print("global-exclude " + ' '.join(patterns)) for pattern in patterns: if not self.exclude_pattern(pattern, anchor=0): log.warn(("warning: no previously-included files matching " "'%s' found anywhere in distribution"), pattern) elif action == 'recursive-include': self.debug_print("recursive-include %s %s" % (dir, ' '.join(patterns))) for pattern in patterns: if not self.include_pattern(pattern, prefix=dir): log.warn(("warning: no files found matching '%s' " + "under directory '%s'"), pattern, dir) elif action == 'recursive-exclude': self.debug_print("recursive-exclude %s %s" % (dir, ' '.join(patterns))) for pattern in patterns: if not self.exclude_pattern(pattern, prefix=dir): log.warn(("warning: no previously-included files matching " "'%s' found under directory '%s'"), pattern, dir) elif action == 'graft': self.debug_print("graft " + dir_pattern) if not self.include_pattern(None, prefix=dir_pattern): log.warn("warning: no directories found matching '%s'", dir_pattern) elif action == 'prune': self.debug_print("prune " + dir_pattern) if not self.exclude_pattern(None, prefix=dir_pattern): log.warn(("no previously-included directories found " + "matching '%s'"), dir_pattern) else: raise DistutilsInternalError, \ "this cannot happen: invalid action '%s'" % action # -- Filtering/selection methods ----------------------------------- def include_pattern(self, pattern, anchor=1, prefix=None, is_regex=0): """Select strings (presumably filenames) from 'self.files' that match 'pattern', a Unix-style wildcard (glob) pattern. Patterns are not quite the same as implemented by the 'fnmatch' module: '*' and '?' match non-special characters, where "special" is platform-dependent: slash on Unix; colon, slash, and backslash on DOS/Windows; and colon on Mac OS. If 'anchor' is true (the default), then the pattern match is more stringent: "*.py" will match "foo.py" but not "foo/bar.py". If 'anchor' is false, both of these will match. If 'prefix' is supplied, then only filenames starting with 'prefix' (itself a pattern) and ending with 'pattern', with anything in between them, will match. 'anchor' is ignored in this case. If 'is_regex' is true, 'anchor' and 'prefix' are ignored, and 'pattern' is assumed to be either a string containing a regex or a regex object -- no translation is done, the regex is just compiled and used as-is. Selected strings will be added to self.files. Return 1 if files are found. """ # XXX docstring lying about what the special chars are? files_found = 0 pattern_re = translate_pattern(pattern, anchor, prefix, is_regex) self.debug_print("include_pattern: applying regex r'%s'" % pattern_re.pattern) # delayed loading of allfiles list if self.allfiles is None: self.findall() for name in self.allfiles: if pattern_re.search(name): self.debug_print(" adding " + name) self.files.append(name) files_found = 1 return files_found def exclude_pattern(self, pattern, anchor=1, prefix=None, is_regex=0): """Remove strings (presumably filenames) from 'files' that match 'pattern'. Other parameters are the same as for 'include_pattern()', above. The list 'self.files' is modified in place. Return 1 if files are found. """ files_found = 0 pattern_re = translate_pattern(pattern, anchor, prefix, is_regex) self.debug_print("exclude_pattern: applying regex r'%s'" % pattern_re.pattern) for i in range(len(self.files)-1, -1, -1): if pattern_re.search(self.files[i]): self.debug_print(" removing " + self.files[i]) del self.files[i] files_found = 1 return files_found # ---------------------------------------------------------------------- # Utility functions def findall(dir = os.curdir): """Find all files under 'dir' and return the list of full filenames (relative to 'dir'). """ from stat import ST_MODE, S_ISREG, S_ISDIR, S_ISLNK list = [] stack = [dir] pop = stack.pop push = stack.append while stack: dir = pop() names = os.listdir(dir) for name in names: if dir != os.curdir: # avoid the dreaded "./" syndrome fullname = os.path.join(dir, name) else: fullname = name # Avoid excess stat calls -- just one will do, thank you! stat = os.stat(fullname) mode = stat[ST_MODE] if S_ISREG(mode): list.append(fullname) elif S_ISDIR(mode) and not S_ISLNK(mode): push(fullname) return list def glob_to_re(pattern): """Translate a shell-like glob pattern to a regular expression. Return a string containing the regex. Differs from 'fnmatch.translate()' in that '*' does not match "special characters" (which are platform-specific). """ pattern_re = fnmatch.translate(pattern) # '?' and '*' in the glob pattern become '.' and '.*' in the RE, which # IMHO is wrong -- '?' and '*' aren't supposed to match slash in Unix, # and by extension they shouldn't match such "special characters" under # any OS. So change all non-escaped dots in the RE to match any # character except the special characters (currently: just os.sep). sep = os.sep if os.sep == '\\': # we're using a regex to manipulate a regex, so we need # to escape the backslash twice sep = r'\\\\' escaped = r'\1[^%s]' % sep pattern_re = re.sub(r'((?