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c1ee39a99e
sure it's imported! ;) Re-wrap the docstrings on get_python_inc() and get_python_lib() to be closer to the "normal" Python style. See GvR's "style guide" on the essays page (http://www.python.org/doc/essays/). There should never be a space between a function name and the '(' that opens the argument list (see the style guide again).
267 lines
8.4 KiB
Python
267 lines
8.4 KiB
Python
"""Provide access to Python's configuration information. The specific names
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defined in the module depend heavily on the platform and configuration.
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Written by: Fred L. Drake, Jr.
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Email: <fdrake@acm.org>
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Initial date: 17-Dec-1998
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"""
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__version__ = "$Revision$"
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import os
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import re
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import string
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import sys
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from errors import DistutilsPlatformError
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prefix = os.path.normpath(sys.prefix)
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exec_prefix = os.path.normpath(sys.exec_prefix)
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def get_python_inc(plat_specific=0):
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"""Return the directory containing installed Python header files.
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If 'plat_specific' is false (the default), this is the path to the
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non-platform-specific header files, i.e. Python.h and so on;
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otherwise, this is the path to platform-specific header files
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(namely config.h).
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"""
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the_prefix = (plat_specific and exec_prefix or prefix)
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if os.name == "posix":
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return os.path.join(the_prefix, "include", "python" + sys.version[:3])
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elif os.name == "nt":
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return os.path.join(the_prefix, "Include") # include or Include?
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elif os.name == "mac":
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return os.path.join(the_prefix, "Include")
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else:
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raise DistutilsPlatformError, \
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("I don't know where Python installs its C header files " +
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"on platform '%s'") % os.name
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def get_python_lib(plat_specific=0, standard_lib=0):
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"""Return the directory containing the Python library (standard or
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site additions).
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If 'plat_specific' is true, return the directory containing
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platform-specific modules, i.e. any module from a non-pure-Python
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module distribution; otherwise, return the platform-shared library
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directory. If 'standard_lib' is true, return the directory
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containing standard Python library modules; otherwise, return the
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directory for site-specific modules.
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"""
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the_prefix = (plat_specific and exec_prefix or prefix)
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if os.name == "posix":
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libpython = os.path.join(the_prefix,
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"lib", "python" + sys.version[:3])
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if standard_lib:
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return libpython
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else:
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return os.path.join(libpython, "site-packages")
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elif os.name == "nt":
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if standard_lib:
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return os.path.join(the_prefix, "Lib")
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else:
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return the_prefix
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elif os.name == "mac":
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if platform_specific:
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if standard_lib:
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return os.path.join(exec_prefix, "Mac", "Plugins")
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else:
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raise DistutilsPlatformError, \
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"OK, where DO site-specific extensions go on the Mac?"
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else:
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if standard_lib:
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return os.path.join(prefix, "Lib")
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else:
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raise DistutilsPlatformError, \
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"OK, where DO site-specific modules go on the Mac?"
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else:
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raise DistutilsPlatformError, \
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("I don't know where Python installs its library " +
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"on platform '%s'") % os.name
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# get_python_lib()
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def get_config_h_filename():
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"""Return full pathname of installed config.h file."""
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inc_dir = get_python_inc(plat_specific=1)
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return os.path.join(inc_dir, "config.h")
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def get_makefile_filename():
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"""Return full pathname of installed Makefile from the Python build."""
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lib_dir = get_python_lib(plat_specific=1, standard_lib=1)
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return os.path.join(lib_dir, "config", "Makefile")
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def parse_config_h(fp, g=None):
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"""Parse a config.h-style file.
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A dictionary containing name/value pairs is returned. If an
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optional dictionary is passed in as the second argument, it is
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used instead of a new dictionary.
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"""
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if g is None:
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g = {}
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define_rx = re.compile("#define ([A-Z][A-Z0-9_]+) (.*)\n")
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undef_rx = re.compile("/[*] #undef ([A-Z][A-Z0-9_]+) [*]/\n")
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#
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while 1:
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line = fp.readline()
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if not line:
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break
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m = define_rx.match(line)
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if m:
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n, v = m.group(1, 2)
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try: v = string.atoi(v)
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except ValueError: pass
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g[n] = v
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else:
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m = undef_rx.match(line)
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if m:
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g[m.group(1)] = 0
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return g
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def parse_makefile(fp, g=None):
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"""Parse a Makefile-style file.
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A dictionary containing name/value pairs is returned. If an
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optional dictionary is passed in as the second argument, it is
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used instead of a new dictionary.
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"""
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if g is None:
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g = {}
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variable_rx = re.compile("([a-zA-Z][a-zA-Z0-9_]+)\s*=\s*(.*)\n")
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done = {}
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notdone = {}
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#
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while 1:
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line = fp.readline()
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if not line:
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break
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m = variable_rx.match(line)
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if m:
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n, v = m.group(1, 2)
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v = string.strip(v)
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if "$" in v:
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notdone[n] = v
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else:
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try: v = string.atoi(v)
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except ValueError: pass
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done[n] = v
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# do variable interpolation here
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findvar1_rx = re.compile(r"\$\(([A-Za-z][A-Za-z0-9_]*)\)")
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findvar2_rx = re.compile(r"\${([A-Za-z][A-Za-z0-9_]*)}")
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while notdone:
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for name in notdone.keys():
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value = notdone[name]
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m = findvar1_rx.search(value)
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if not m:
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m = findvar2_rx.search(value)
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if m:
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n = m.group(1)
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if done.has_key(n):
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after = value[m.end():]
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value = value[:m.start()] + done[n] + after
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if "$" in after:
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notdone[name] = value
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else:
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try: value = string.atoi(value)
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except ValueError: pass
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done[name] = string.strip(value)
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del notdone[name]
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elif notdone.has_key(n):
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# get it on a subsequent round
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pass
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else:
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done[n] = ""
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after = value[m.end():]
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value = value[:m.start()] + after
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if "$" in after:
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notdone[name] = value
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else:
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try: value = string.atoi(value)
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except ValueError: pass
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done[name] = string.strip(value)
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del notdone[name]
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else:
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# bogus variable reference; just drop it since we can't deal
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del notdone[name]
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# save the results in the global dictionary
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g.update(done)
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return g
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def _init_posix():
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"""Initialize the module as appropriate for POSIX systems."""
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g = globals()
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# load the installed config.h:
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parse_config_h(open(get_config_h_filename()), g)
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# load the installed Makefile:
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parse_makefile(open(get_makefile_filename()), g)
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def _init_nt():
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"""Initialize the module as appropriate for NT"""
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g = globals()
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# load config.h, though I don't know how useful this is
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parse_config_h(open(get_config_h_filename()), g)
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# set basic install directories
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g['LIBDEST'] = get_python_lib(plat_specific=0, standard_lib=1)
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g['BINLIBDEST'] = get_python_lib(plat_specific=1, standard_lib=1)
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# XXX hmmm.. a normal install puts include files here
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g['INCLUDEPY'] = get_python_inc(plat_specific=0)
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g['SO'] = '.pyd'
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g['exec_prefix'] = exec_prefix
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def _init_mac():
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"""Initialize the module as appropriate for Macintosh systems"""
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g = globals()
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# load the installed config.h (what if not installed? - still need to
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# be able to install packages which don't require compilation)
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parse_config_h(open(
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os.path.join(sys.exec_prefix, "Mac", "Include", "config.h")), g)
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# set basic install directories
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g['LIBDEST'] = get_python_lib(plat_specific=0, standard_lib=1)
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g['BINLIBDEST'] = get_python_lib(plat_specific=1, standard_lib=1)
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# XXX hmmm.. a normal install puts include files here
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g['INCLUDEPY'] = get_python_inc(plat_specific=0)
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g['SO'] = '.ppc.slb'
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g['exec_prefix'] = sys.exec_prefix
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print sys.prefix
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# XXX are these used anywhere?
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g['install_lib'] = os.path.join(sys.exec_prefix, "Lib")
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g['install_platlib'] = os.path.join(sys.exec_prefix, "Mac", "Lib")
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try:
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exec "_init_" + os.name
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except NameError:
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# not needed for this platform
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pass
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else:
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exec "_init_%s()" % os.name
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del _init_posix
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del _init_nt
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del _init_mac
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