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#
# Cython - Command Line Parsing
#
from __future__ import absolute_import
import os
import sys
from . import Options
usage = """\
Cython (http://cython.org) is a compiler for code written in the
Cython language. Cython is based on Pyrex by Greg Ewing.
Usage: cython [options] sourcefile.{pyx,py} ...
Options:
-V, --version Display version number of cython compiler
-l, --create-listing Write error messages to a listing file
-I, --include-dir <directory> Search for include files in named directory
(multiple include directories are allowed).
-o, --output-file <filename> Specify name of generated C file
-t, --timestamps Only compile newer source files
-f, --force Compile all source files (overrides implied -t)
-v, --verbose Be verbose, print file names on multiple compilation
-p, --embed-positions If specified, the positions in Cython files of each
function definition is embedded in its docstring.
--cleanup <level> Release interned objects on python exit, for memory debugging.
Level indicates aggressiveness, default 0 releases nothing.
-w, --working <directory> Sets the working directory for Cython (the directory modules
are searched from)
--gdb Output debug information for cygdb
--gdb-outdir <directory> Specify gdb debug information output directory. Implies --gdb.
-D, --no-docstrings Strip docstrings from the compiled module.
-a, --annotate Produce a colorized HTML version of the source.
--annotate-coverage <cov.xml> Annotate and include coverage information from cov.xml.
--line-directives Produce #line directives pointing to the .pyx source
--cplus Output a C++ rather than C file.
--embed[=<method_name>] Generate a main() function that embeds the Python interpreter.
-2 Compile based on Python-2 syntax and code semantics.
-3 Compile based on Python-3 syntax and code semantics.
--3str Compile based on Python-3 syntax and code semantics without
assuming unicode by default for string literals under Python 2.
--lenient Change some compile time errors to runtime errors to
improve Python compatibility
--capi-reexport-cincludes Add cincluded headers to any auto-generated header files.
--fast-fail Abort the compilation on the first error
--warning-errors, -Werror Make all warnings into errors
--warning-extra, -Wextra Enable extra warnings
-X, --directive <name>=<value>[,<name=value,...] Overrides a compiler directive
-E, --compile-time-env name=value[,<name=value,...] Provides compile time env like DEF would do.
"""
# The following experimental options are supported only on MacOSX:
# -C, --compile Compile generated .c file to .o file
# --link Link .o file to produce extension module (implies -C)
# -+, --cplus Use C++ compiler for compiling and linking
# Additional .o files to link may be supplied when using -X."""
def bad_usage():
sys.stderr.write(usage)
sys.exit(1)
def parse_command_line(args):
from .Main import CompilationOptions, default_options
pending_arg = []
def pop_arg():
if not args or pending_arg:
bad_usage()
if '=' in args[0] and args[0].startswith('--'): # allow "--long-option=xyz"
name, value = args.pop(0).split('=', 1)
pending_arg.append(value)
return name
return args.pop(0)
def pop_value(default=None):
if pending_arg:
return pending_arg.pop()
elif default is not None:
return default
elif not args:
bad_usage()
return args.pop(0)
def get_param(option):
tail = option[2:]
if tail:
return tail
else:
return pop_arg()
options = CompilationOptions(default_options)
sources = []
while args:
if args[0].startswith("-"):
option = pop_arg()
if option in ("-V", "--version"):
options.show_version = 1
elif option in ("-l", "--create-listing"):
options.use_listing_file = 1
elif option in ("-+", "--cplus"):
options.cplus = 1
elif option == "--embed":
Options.embed = pop_value("main")
elif option.startswith("-I"):
options.include_path.append(get_param(option))
elif option == "--include-dir":
options.include_path.append(pop_value())
elif option in ("-w", "--working"):
options.working_path = pop_value()
elif option in ("-o", "--output-file"):
options.output_file = pop_value()
elif option in ("-t", "--timestamps"):
options.timestamps = 1
elif option in ("-f", "--force"):
options.timestamps = 0
elif option in ("-v", "--verbose"):
options.verbose += 1
elif option in ("-p", "--embed-positions"):
Options.embed_pos_in_docstring = 1
elif option in ("-z", "--pre-import"):
Options.pre_import = pop_value()
elif option == "--cleanup":
Options.generate_cleanup_code = int(pop_value())
elif option in ("-D", "--no-docstrings"):
Options.docstrings = False
elif option in ("-a", "--annotate"):
Options.annotate = True
elif option == "--annotate-coverage":
Options.annotate = True
Options.annotate_coverage_xml = pop_value()
elif option == "--convert-range":
Options.convert_range = True
elif option == "--line-directives":
options.emit_linenums = True
elif option == "--no-c-in-traceback":
options.c_line_in_traceback = False
elif option == "--gdb":
options.gdb_debug = True
options.output_dir = os.curdir
elif option == "--gdb-outdir":
options.gdb_debug = True
options.output_dir = pop_value()
elif option == "--lenient":
Options.error_on_unknown_names = False
Options.error_on_uninitialized = False
elif option == '-2':
options.language_level = 2
elif option == '-3':
options.language_level = 3
elif option == '--3str':
options.language_level = '3str'
elif option == "--capi-reexport-cincludes":
options.capi_reexport_cincludes = True
elif option == "--fast-fail":
Options.fast_fail = True
elif option == "--cimport-from-pyx":
Options.cimport_from_pyx = True
elif option in ('-Werror', '--warning-errors'):
Options.warning_errors = True
elif option in ('-Wextra', '--warning-extra'):
options.compiler_directives.update(Options.extra_warnings)
elif option == "--old-style-globals":
Options.old_style_globals = True
elif option == "--directive" or option.startswith('-X'):
if option.startswith('-X') and option[2:].strip():
x_args = option[2:]
else:
x_args = pop_value()
try:
options.compiler_directives = Options.parse_directive_list(
x_args, relaxed_bool=True,
current_settings=options.compiler_directives)
except ValueError as e:
sys.stderr.write("Error in compiler directive: %s\n" % e.args[0])
sys.exit(1)
elif option == "--compile-time-env" or option.startswith('-E'):
if option.startswith('-E') and option[2:].strip():
x_args = option[2:]
else:
x_args = pop_value()
try:
options.compile_time_env = Options.parse_compile_time_env(
x_args, current_settings=options.compile_time_env)
except ValueError as e:
sys.stderr.write("Error in compile-time-env: %s\n" % e.args[0])
sys.exit(1)
elif option.startswith('--debug'):
option = option[2:].replace('-', '_')
from . import DebugFlags
if option in dir(DebugFlags):
setattr(DebugFlags, option, True)
else:
sys.stderr.write("Unknown debug flag: %s\n" % option)
bad_usage()
elif option in ('-h', '--help'):
sys.stdout.write(usage)
sys.exit(0)
else:
sys.stderr.write("Unknown compiler flag: %s\n" % option)
sys.exit(1)
else:
sources.append(pop_arg())
if pending_arg:
bad_usage()
if options.use_listing_file and len(sources) > 1:
sys.stderr.write(
"cython: Only one source file allowed when using -o\n")
sys.exit(1)
if len(sources) == 0 and not options.show_version:
bad_usage()
if Options.embed and len(sources) > 1:
sys.stderr.write(
"cython: Only one source file allowed when using -embed\n")
sys.exit(1)
return options, sources
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