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# -*- Mode: Python; py-indent-offset: 4 -*-
# this file contains code for loading up an override file. The override file
# provides implementations of functions where the code generator could not
# do its job correctly.
import fnmatch
import os
import re
import string
import sys
import_pat = re.compile(r'\s*import\s+(\S+)\.([^\s.]+)\s+as\s+(\S+)')
class Overrides:
def __init__(self, filename=None):
self.modulename = None
self.ignores = {}
self.glob_ignores = []
self.overrides = {}
self.overridden = {}
self.kwargs = {}
self.noargs = {}
self.startlines = {}
self.override_attrs = {}
self.override_slots = {}
self.headers = ''
self.init = ''
self.imports = []
if filename: self.handle_file(filename)
def handle_file(self, filename):
oldpath = os.getcwd()
fp = open(filename, 'r')
dirname = os.path.dirname(os.path.abspath(filename))
if dirname != oldpath:
os.chdir(dirname)
# read all the components of the file ...
bufs = []
startline = 1
lines = []
line = fp.readline()
linenum = 1
while line:
if line == '%%\n' or line == '%%':
if lines:
bufs.append((string.join(lines, ''), startline))
startline = linenum + 1
lines = []
else:
lines.append(line)
line = fp.readline()
linenum = linenum + 1
if lines:
bufs.append((string.join(lines, ''), startline))
if not bufs: return
for buf, startline in bufs:
self.__parse_override(buf, startline, filename)
os.chdir(oldpath)
def __parse_override(self, buffer, startline, filename):
pos = string.find(buffer, '\n')
if pos >= 0:
line = buffer[:pos]
rest = buffer[pos+1:]
else:
line = buffer ; rest = ''
words = string.split(line)
if (words[0] == 'ignore' or
words[0] == 'ignore-' + sys.platform):
for func in words[1:]:
self.ignores[func] = 1
for func in string.split(rest):
self.ignores[func] = 1
elif (words[0] == 'ignore-glob' or
words[0] == 'ignore-glob-' + sys.platform):
for func in words[1:]:
self.glob_ignores.append(func)
for func in string.split(rest):
self.glob_ignores.append(func)
elif words[0] == 'override':
func = words[1]
if 'kwargs' in words[1:]:
self.kwargs[func] = 1
elif 'noargs' in words[1:]:
self.noargs[func] = 1
self.overrides[func] = rest
self.startlines[func] = (startline + 1, filename)
elif words[0] == 'override-attr':
attr = words[1]
self.override_attrs[attr] = rest
self.startlines[attr] = (startline + 1, filename)
elif words[0] == 'override-slot':
slot = words[1]
self.override_slots[slot] = rest
self.startlines[slot] = (startline + 1, filename)
elif words[0] == 'headers':
self.headers = '%s\n#line %d "%s"\n%s' % \
(self.headers, startline + 1, filename, rest)
elif words[0] == 'init':
self.init = '%s\n#line %d "%s"\n%s' % \
(self.init, startline + 1, filename, rest)
elif words[0] == 'modulename':
self.modulename = words[1]
elif words[0] == 'include':
for filename in words[1:]:
self.handle_file(filename)
for filename in string.split(rest):
self.handle_file(filename)
elif words[0] == 'import':
for line in string.split(buffer, '\n'):
match = import_pat.match(line)
if match:
self.imports.append(match.groups())
def is_ignored(self, name):
if self.ignores.has_key(name):
return 1
for glob in self.glob_ignores:
if fnmatch.fnmatchcase(name, glob):
return 1
return 0
def is_overriden(self, name):
return self.overrides.has_key(name)
def is_already_included(self, name):
return self.overridden.has_key(name)
def override(self, name):
self.overridden[name] = 1
return self.overrides[name]
def getstartline(self, name):
return self.startlines[name]
def wants_kwargs(self, name):
return self.kwargs.has_key(name)
def wants_noargs(self, name):
return self.noargs.has_key(name)
def attr_is_overriden(self, attr):
return self.override_attrs.has_key(attr)
def attr_override(self, attr):
return self.override_attrs[attr]
def slot_is_overriden(self, slot):
return self.override_slots.has_key(slot)
def slot_override(self, slot):
return self.override_slots[slot]
def get_headers(self):
return self.headers
def get_init(self):
return self.init
def get_imports(self):
return self.imports
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