1 """distutils.command.build_py
3 Implements the Distutils 'build_py' command."""
5 # This module should be kept compatible with Python 2.1.
7 __revision__ = "$Id: build_py.py 65742 2008-08-17 04:16:04Z brett.cannon $"
13 from distutils.core import Command
14 from distutils.errors import *
15 from distutils.util import convert_path
16 from distutils import log
18 class build_py (Command):
20 description = "\"build\" pure Python modules (copy to build directory)"
23 ('build-lib=', 'd', "directory to \"build\" (copy) to"),
24 ('compile', 'c', "compile .py to .pyc"),
25 ('no-compile', None, "don't compile .py files [default]"),
27 "also compile with optimization: -O1 for \"python -O\", "
28 "-O2 for \"python -OO\", and -O0 to disable [default: -O0]"),
29 ('force', 'f', "forcibly build everything (ignore file timestamps)"),
32 boolean_options = ['compile', 'force']
33 negative_opt = {'no-compile' : 'compile'}
36 def initialize_options (self):
38 self.py_modules = None
40 self.package_data = None
41 self.package_dir = None
46 def finalize_options (self):
47 self.set_undefined_options('build',
48 ('build_lib', 'build_lib'),
51 # Get the distribution options that are aliases for build_py
52 # options -- list of packages and list of modules.
53 self.packages = self.distribution.packages
54 self.py_modules = self.distribution.py_modules
55 self.package_data = self.distribution.package_data
57 if self.distribution.package_dir:
58 for name, path in self.distribution.package_dir.items():
59 self.package_dir[name] = convert_path(path)
60 self.data_files = self.get_data_files()
62 # Ick, copied straight from install_lib.py (fancy_getopt needs a
63 # type system! Hell, *everything* needs a type system!!!)
64 if type(self.optimize) is not IntType:
66 self.optimize = int(self.optimize)
67 assert 0 <= self.optimize <= 2
68 except (ValueError, AssertionError):
69 raise DistutilsOptionError, "optimize must be 0, 1, or 2"
73 # XXX copy_file by default preserves atime and mtime. IMHO this is
74 # the right thing to do, but perhaps it should be an option -- in
75 # particular, a site administrator might want installed files to
76 # reflect the time of installation rather than the last
77 # modification time before the installed release.
79 # XXX copy_file by default preserves mode, which appears to be the
80 # wrong thing to do: if a file is read-only in the working
81 # directory, we want it to be installed read/write so that the next
82 # installation of the same module distribution can overwrite it
83 # without problems. (This might be a Unix-specific issue.) Thus
84 # we turn off 'preserve_mode' when copying to the build directory,
85 # since the build directory is supposed to be exactly what the
86 # installation will look like (ie. we preserve mode when
89 # Two options control which modules will be installed: 'packages'
90 # and 'py_modules'. The former lets us work with whole packages, not
91 # specifying individual modules at all; the latter is for
92 # specifying modules one-at-a-time.
98 self.build_package_data()
100 self.byte_compile(self.get_outputs(include_bytecode=0))
104 def get_data_files (self):
105 """Generate list of '(package,src_dir,build_dir,filenames)' tuples"""
107 if not self.packages:
109 for package in self.packages:
110 # Locate package source directory
111 src_dir = self.get_package_dir(package)
113 # Compute package build directory
114 build_dir = os.path.join(*([self.build_lib] + package.split('.')))
116 # Length of path to strip from found files
119 plen = len(src_dir)+1
121 # Strip directory from globbed filenames
123 file[plen:] for file in self.find_data_files(package, src_dir)
125 data.append((package, src_dir, build_dir, filenames))
128 def find_data_files (self, package, src_dir):
129 """Return filenames for package's data files in 'src_dir'"""
130 globs = (self.package_data.get('', [])
131 + self.package_data.get(package, []))
133 for pattern in globs:
134 # Each pattern has to be converted to a platform-specific path
135 filelist = glob(os.path.join(src_dir, convert_path(pattern)))
136 # Files that match more than one pattern are only added once
137 files.extend([fn for fn in filelist if fn not in files])
140 def build_package_data (self):
141 """Copy data files into build directory"""
143 for package, src_dir, build_dir, filenames in self.data_files:
144 for filename in filenames:
145 target = os.path.join(build_dir, filename)
146 self.mkpath(os.path.dirname(target))
147 self.copy_file(os.path.join(src_dir, filename), target,
150 def get_package_dir (self, package):
151 """Return the directory, relative to the top of the source
152 distribution, where package 'package' should be found
153 (at least according to the 'package_dir' option, if any)."""
155 path = string.split(package, '.')
157 if not self.package_dir:
159 return apply(os.path.join, path)
166 pdir = self.package_dir[string.join(path, '.')]
168 tail.insert(0, path[-1])
172 return os.path.join(*tail)
174 # Oops, got all the way through 'path' without finding a
175 # match in package_dir. If package_dir defines a directory
176 # for the root (nameless) package, then fallback on it;
177 # otherwise, we might as well have not consulted
178 # package_dir at all, as we just use the directory implied
179 # by 'tail' (which should be the same as the original value
180 # of 'path' at this point).
181 pdir = self.package_dir.get('')
186 return apply(os.path.join, tail)
193 def check_package (self, package, package_dir):
195 # Empty dir name means current directory, which we can probably
196 # assume exists. Also, os.path.exists and isdir don't know about
197 # my "empty string means current dir" convention, so we have to
199 if package_dir != "":
200 if not os.path.exists(package_dir):
201 raise DistutilsFileError, \
202 "package directory '%s' does not exist" % package_dir
203 if not os.path.isdir(package_dir):
204 raise DistutilsFileError, \
205 ("supposed package directory '%s' exists, " +
206 "but is not a directory") % package_dir
208 # Require __init__.py for all but the "root package"
210 init_py = os.path.join(package_dir, "__init__.py")
211 if os.path.isfile(init_py):
214 log.warn(("package init file '%s' not found " +
215 "(or not a regular file)"), init_py)
217 # Either not in a package at all (__init__.py not expected), or
218 # __init__.py doesn't exist -- so don't return the filename.
224 def check_module (self, module, module_file):
225 if not os.path.isfile(module_file):
226 log.warn("file %s (for module %s) not found", module_file, module)
234 def find_package_modules (self, package, package_dir):
235 self.check_package(package, package_dir)
236 module_files = glob(os.path.join(package_dir, "*.py"))
238 setup_script = os.path.abspath(self.distribution.script_name)
240 for f in module_files:
241 abs_f = os.path.abspath(f)
242 if abs_f != setup_script:
243 module = os.path.splitext(os.path.basename(f))[0]
244 modules.append((package, module, f))
246 self.debug_print("excluding %s" % setup_script)
250 def find_modules (self):
251 """Finds individually-specified Python modules, ie. those listed by
252 module name in 'self.py_modules'. Returns a list of tuples (package,
253 module_base, filename): 'package' is a tuple of the path through
254 package-space to the module; 'module_base' is the bare (no
255 packages, no dots) module name, and 'filename' is the path to the
256 ".py" file (relative to the distribution root) that implements the
260 # Map package names to tuples of useful info about the package:
261 # (package_dir, checked)
262 # package_dir - the directory where we'll find source files for
264 # checked - true if we have checked that the package directory
265 # is valid (exists, contains __init__.py, ... ?)
268 # List of (package, module, filename) tuples to return
271 # We treat modules-in-packages almost the same as toplevel modules,
272 # just the "package" for a toplevel is empty (either an empty
273 # string or empty list, depending on context). Differences:
274 # - don't check for __init__.py in directory for empty package
276 for module in self.py_modules:
277 path = string.split(module, '.')
278 package = string.join(path[0:-1], '.')
279 module_base = path[-1]
282 (package_dir, checked) = packages[package]
284 package_dir = self.get_package_dir(package)
288 init_py = self.check_package(package, package_dir)
289 packages[package] = (package_dir, 1)
291 modules.append((package, "__init__", init_py))
293 # XXX perhaps we should also check for just .pyc files
294 # (so greedy closed-source bastards can distribute Python
296 module_file = os.path.join(package_dir, module_base + ".py")
297 if not self.check_module(module, module_file):
300 modules.append((package, module_base, module_file))
307 def find_all_modules (self):
308 """Compute the list of all modules that will be built, whether
309 they are specified one-module-at-a-time ('self.py_modules') or
310 by whole packages ('self.packages'). Return a list of tuples
311 (package, module, module_file), just like 'find_modules()' and
312 'find_package_modules()' do."""
316 modules.extend(self.find_modules())
318 for package in self.packages:
319 package_dir = self.get_package_dir(package)
320 m = self.find_package_modules(package, package_dir)
325 # find_all_modules ()
328 def get_source_files (self):
330 modules = self.find_all_modules()
332 for module in modules:
333 filenames.append(module[-1])
338 def get_module_outfile (self, build_dir, package, module):
339 outfile_path = [build_dir] + list(package) + [module + ".py"]
340 return os.path.join(*outfile_path)
343 def get_outputs (self, include_bytecode=1):
344 modules = self.find_all_modules()
346 for (package, module, module_file) in modules:
347 package = string.split(package, '.')
348 filename = self.get_module_outfile(self.build_lib, package, module)
349 outputs.append(filename)
352 outputs.append(filename + "c")
353 if self.optimize > 0:
354 outputs.append(filename + "o")
357 os.path.join(build_dir, filename)
358 for package, src_dir, build_dir, filenames in self.data_files
359 for filename in filenames
365 def build_module (self, module, module_file, package):
366 if type(package) is StringType:
367 package = string.split(package, '.')
368 elif type(package) not in (ListType, TupleType):
370 "'package' must be a string (dot-separated), list, or tuple"
372 # Now put the module source file into the "build" area -- this is
373 # easy, we just copy it somewhere under self.build_lib (the build
374 # directory for Python source).
375 outfile = self.get_module_outfile(self.build_lib, package, module)
376 dir = os.path.dirname(outfile)
378 return self.copy_file(module_file, outfile, preserve_mode=0)
381 def build_modules (self):
383 modules = self.find_modules()
384 for (package, module, module_file) in modules:
386 # Now "build" the module -- ie. copy the source file to
387 # self.build_lib (the build directory for Python source).
388 # (Actually, it gets copied to the directory for this package
389 # under self.build_lib.)
390 self.build_module(module, module_file, package)
395 def build_packages (self):
397 for package in self.packages:
399 # Get list of (package, module, module_file) tuples based on
400 # scanning the package directory. 'package' is only included
401 # in the tuple so that 'find_modules()' and
402 # 'find_package_tuples()' have a consistent interface; it's
403 # ignored here (apart from a sanity check). Also, 'module' is
404 # the *unqualified* module name (ie. no dots, no package -- we
405 # already know its package!), and 'module_file' is the path to
406 # the .py file, relative to the current directory
407 # (ie. including 'package_dir').
408 package_dir = self.get_package_dir(package)
409 modules = self.find_package_modules(package, package_dir)
411 # Now loop over the modules we found, "building" each one (just
412 # copy it to self.build_lib).
413 for (package_, module, module_file) in modules:
414 assert package == package_
415 self.build_module(module, module_file, package)
420 def byte_compile (self, files):
421 from distutils.util import byte_compile
422 prefix = self.build_lib
423 if prefix[-1] != os.sep:
424 prefix = prefix + os.sep
426 # XXX this code is essentially the same as the 'byte_compile()
427 # method of the "install_lib" command, except for the determination
428 # of the 'prefix' string. Hmmm.
431 byte_compile(files, optimize=0,
432 force=self.force, prefix=prefix, dry_run=self.dry_run)
433 if self.optimize > 0:
434 byte_compile(files, optimize=self.optimize,
435 force=self.force, prefix=prefix, dry_run=self.dry_run)