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# dll.py module
"""DLL specifics"""
# Some definitions:
# Library name (name): An internal identifier, a string, for a library.
# e.g. FONT
# Library file root (root): The library root used in linker -l options.
# e.g. SDL_mixer
import re
# Table of dependencies.
# name, root, File regex, Dependency list of file root names
libraries = [
('MIXER', 'SDL_mixer', r'(lib){0,1}SDL_mixer\.dll$',
['SDL', 'vorbisfile', 'smpeg']),
('VORBISFILE', 'vorbisfile', r'(lib){0,1}vorbisfile(-3){0,1}\.dll$',
['vorbis']),
('VORBIS', 'vorbis', r'(lib){0,1}vorbis(-0){0,1}\.dll$', ['ogg']),
('OGG', 'ogg', r'(lib){0,1}ogg(-0){0,1}\.dll$', []),
('SMPEG', 'smpeg', r'(lib){0,1}smpeg\.dll$', ['SDL']),
('IMAGE', 'SDL_image', r'(lib){0,1}SDL_image\.dll$',
['SDL', 'jpeg', 'png', 'tiff']),
('TIFF', 'tiff', r'(lib){0,1}tiff\.dll$', ['jpeg', 'z']),
('JPEG', 'jpeg', r'(lib){0,1}jpeg\.dll$', []),
('PNG', 'png', r'(lib){0,1}png(1[23])\.dll$', ['z']),
('FONT', 'SDL_ttf', r'(lib){0,1}SDL_ttf\.dll$', ['SDL', 'z']),
('Z', 'z', r'zlib1\.dll$', []),
('SDL', 'SDL', r'(lib){0,1}SDL\.dll$', [])
]
# regexs: Maps name to DLL file name regex.
# lib_dependencies: Maps name to list of dependencies.
# file_root_names: Maps name to root.
regexs = {}
lib_dependencies = {}
file_root_names = {}
for name, root, regex, deps in libraries:
regexs[name] = regex
lib_dependencies[root] = deps
file_root_names[name] = root
del name, root, regex, deps
def tester(name):
"""For a library name return a function which tests dll file names"""
def test(file_name):
"""Return true if file name f is a valid DLL name"""
return match(file_name) is not None
match = re.compile(regexs[name], re.I).match
test.library_name = name # Available for debugging.
return test
def dependencies(roots):
"""Return a set of dependencies for the list of library file roots
The return set is a dictionary keyed on library root name with values of 1.
"""
root_set = {}
for root in roots:
try:
deps = lib_dependencies[root]
except KeyError:
pass
else:
root_set[root] = 1
root_set.update(dependencies(deps))
return root_set
def name_to_root(name):
"""Return the library file root for the library name"""
return file_root_names[name]
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