Adding cython v0.20.2 in third-party.

third_party/cython/src/Cython/Compiler/CmdLine.py

+#
+#   Cython - Command Line Parsing
+#
+
+import os
+import sys
+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.
+  --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.
+  --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
+"""
+
+#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 Cython.Compiler.Main import \
+        CompilationOptions, default_options
+
+    def pop_arg():
+        if args:
+            return args.pop(0)
+        else:
+            bad_usage()
+
+    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 = "main"
+            elif option.startswith("--embed="):
+                Options.embed = option[8:]
+            elif option.startswith("-I"):
+                options.include_path.append(get_param(option))
+            elif option == "--include-dir":
+                options.include_path.append(pop_arg())
+            elif option in ("-w", "--working"):
+                options.working_path = pop_arg()
+            elif option in ("-o", "--output-file"):
+                options.output_file = pop_arg()
+            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_arg()
+            elif option == "--cleanup":
+                Options.generate_cleanup_code = int(pop_arg())
+            elif option in ("-D", "--no-docstrings"):
+                Options.docstrings = False
+            elif option in ("-a", "--annotate"):
+                Options.annotate = True
+            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_arg()
+            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 == "--capi-reexport-cincludes":
+                options.capi_reexport_cincludes = True
+            elif option == "--fast-fail":
+                Options.fast_fail = 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_arg()
+                try:
+                    options.compiler_directives = Options.parse_directive_list(
+                        x_args, relaxed_bool=True,
+                        current_settings=options.compiler_directives)
+                except ValueError, e:
+                    sys.stderr.write("Error in compiler directive: %s\n" % e.args[0])
+                    sys.exit(1)
+            elif option.startswith('--debug'):
+                option = option[2:].replace('-', '_')
+                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 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
+