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118 lines
3.6 KiB
118 lines
3.6 KiB
"""Routine to "compile" a .py file to a .pyc (or .pyo) file.
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This module has intimate knowledge of the format of .pyc files.
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"""
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import __builtin__
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import imp
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import marshal
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import os
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import sys
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import traceback
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MAGIC = imp.get_magic()
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__all__ = ["compile", "main", "PyCompileError"]
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class PyCompileError(Exception):
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"""Exception raised when an error occurs while attempting to
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compile the file.
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To raise this exception, use
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raise PyCompileError(exc_type,exc_value,file[,msg])
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where
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exc_type: exception type to be used in error message
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type name can be accesses as class variable
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'exc_type_name'
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exc_value: exception value to be used in error message
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can be accesses as class variable 'exc_value'
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file: name of file being compiled to be used in error message
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can be accesses as class variable 'file'
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msg: string message to be written as error message
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If no value is given, a default exception message will be given,
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consistent with 'standard' py_compile output.
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message (or default) can be accesses as class variable 'msg'
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"""
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def __init__(self, exc_type, exc_value, file, msg=''):
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exc_type_name = exc_type.__name__
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if exc_type is SyntaxError:
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tbtext = ''.join(traceback.format_exception_only(exc_type, exc_value))
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errmsg = tbtext.replace('File "<string>"', 'File "%s"' % file)
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else:
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errmsg = "Sorry: %s: %s" % (exc_type_name,exc_value)
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Exception.__init__(self,msg or errmsg,exc_type_name,exc_value,file)
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self.exc_type_name = exc_type_name
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self.exc_value = exc_value
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self.file = file
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self.msg = msg or errmsg
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def __str__(self):
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return self.msg
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def wr_long(f, x):
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"""Internal; write a 32-bit int to a file in little-endian order."""
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f.write(chr( x & 0xff))
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f.write(chr((x >> 8) & 0xff))
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f.write(chr((x >> 16) & 0xff))
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f.write(chr((x >> 24) & 0xff))
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def compile(file, cfile=None, dfile=None, doraise=False):
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"""Does nothing on IronPython.
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IronPython does not currently support compiling to .pyc
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or any other format.
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"""
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return # not supported on IronPython, so return unconditionally
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def main(args=None):
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"""Compile several source files.
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The files named in 'args' (or on the command line, if 'args' is
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not specified) are compiled and the resulting bytecode is cached
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in the normal manner. This function does not search a directory
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structure to locate source files; it only compiles files named
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explicitly. If '-' is the only parameter in args, the list of
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files is taken from standard input.
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"""
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if args is None:
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args = sys.argv[1:]
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rv = 0
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if args == ['-']:
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while True:
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filename = sys.stdin.readline()
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if not filename:
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break
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filename = filename.rstrip('\n')
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try:
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compile(filename, doraise=True)
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except PyCompileError as error:
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rv = 1
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sys.stderr.write("%s\n" % error.msg)
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except IOError as error:
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rv = 1
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sys.stderr.write("%s\n" % error)
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else:
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for filename in args:
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try:
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compile(filename, doraise=True)
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except PyCompileError as error:
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# return value to indicate at least one failure
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rv = 1
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sys.stderr.write("%s\n" % error.msg)
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return rv
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if __name__ == "__main__":
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sys.exit(main())
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