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author | 2022-11-13 23:46:45 +0530 | |
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committer | 2022-11-13 23:46:45 +0530 | |
commit | 9468226a9e2e2ab8cdd599f1d8538e860ca86120 (patch) | |
tree | 0a77ada226d6db80639f96b438bf83e4e756edb5 /env/lib/python3.10/site-packages/setuptools/_distutils/command/build_scripts.py | |
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Diffstat (limited to 'env/lib/python3.10/site-packages/setuptools/_distutils/command/build_scripts.py')
-rw-r--r-- | env/lib/python3.10/site-packages/setuptools/_distutils/command/build_scripts.py | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/env/lib/python3.10/site-packages/setuptools/_distutils/command/build_scripts.py b/env/lib/python3.10/site-packages/setuptools/_distutils/command/build_scripts.py new file mode 100644 index 0000000..17058db --- /dev/null +++ b/env/lib/python3.10/site-packages/setuptools/_distutils/command/build_scripts.py @@ -0,0 +1,173 @@ +"""distutils.command.build_scripts + +Implements the Distutils 'build_scripts' command.""" + +import os +import re +from stat import ST_MODE +from distutils import sysconfig +from distutils.core import Command +from distutils.dep_util import newer +from distutils.util import convert_path +from distutils import log +import tokenize + +shebang_pattern = re.compile('^#!.*python[0-9.]*([ \t].*)?$') +""" +Pattern matching a Python interpreter indicated in first line of a script. +""" + +# for Setuptools compatibility +first_line_re = shebang_pattern + + +class build_scripts(Command): + + description = "\"build\" scripts (copy and fixup #! line)" + + user_options = [ + ('build-dir=', 'd', "directory to \"build\" (copy) to"), + ('force', 'f', "forcibly build everything (ignore file timestamps"), + ('executable=', 'e', "specify final destination interpreter path"), + ] + + boolean_options = ['force'] + + def initialize_options(self): + self.build_dir = None + self.scripts = None + self.force = None + self.executable = None + + def finalize_options(self): + self.set_undefined_options( + 'build', + ('build_scripts', 'build_dir'), + ('force', 'force'), + ('executable', 'executable'), + ) + self.scripts = self.distribution.scripts + + def get_source_files(self): + return self.scripts + + def run(self): + if not self.scripts: + return + self.copy_scripts() + + def copy_scripts(self): + """ + Copy each script listed in ``self.scripts``. + + If a script is marked as a Python script (first line matches + 'shebang_pattern', i.e. starts with ``#!`` and contains + "python"), then adjust in the copy the first line to refer to + the current Python interpreter. + """ + self.mkpath(self.build_dir) + outfiles = [] + updated_files = [] + for script in self.scripts: + self._copy_script(script, outfiles, updated_files) + + self._change_modes(outfiles) + + return outfiles, updated_files + + def _copy_script(self, script, outfiles, updated_files): + shebang_match = None + script = convert_path(script) + outfile = os.path.join(self.build_dir, os.path.basename(script)) + outfiles.append(outfile) + + if not self.force and not newer(script, outfile): + log.debug("not copying %s (up-to-date)", script) + return + + # Always open the file, but ignore failures in dry-run mode + # in order to attempt to copy directly. + try: + f = tokenize.open(script) + except OSError: + if not self.dry_run: + raise + f = None + else: + first_line = f.readline() + if not first_line: + self.warn("%s is an empty file (skipping)" % script) + return + + shebang_match = shebang_pattern.match(first_line) + + updated_files.append(outfile) + if shebang_match: + log.info("copying and adjusting %s -> %s", script, self.build_dir) + if not self.dry_run: + if not sysconfig.python_build: + executable = self.executable + else: + executable = os.path.join( + sysconfig.get_config_var("BINDIR"), + "python%s%s" + % ( + sysconfig.get_config_var("VERSION"), + sysconfig.get_config_var("EXE"), + ), + ) + post_interp = shebang_match.group(1) or '' + shebang = "#!" + executable + post_interp + "\n" + self._validate_shebang(shebang, f.encoding) + with open(outfile, "w", encoding=f.encoding) as outf: + outf.write(shebang) + outf.writelines(f.readlines()) + if f: + f.close() + else: + if f: + f.close() + self.copy_file(script, outfile) + + def _change_modes(self, outfiles): + if os.name != 'posix': + return + + for file in outfiles: + self._change_mode(file) + + def _change_mode(self, file): + if self.dry_run: + log.info("changing mode of %s", file) + return + + oldmode = os.stat(file)[ST_MODE] & 0o7777 + newmode = (oldmode | 0o555) & 0o7777 + if newmode != oldmode: + log.info("changing mode of %s from %o to %o", file, oldmode, newmode) + os.chmod(file, newmode) + + @staticmethod + def _validate_shebang(shebang, encoding): + # Python parser starts to read a script using UTF-8 until + # it gets a #coding:xxx cookie. The shebang has to be the + # first line of a file, the #coding:xxx cookie cannot be + # written before. So the shebang has to be encodable to + # UTF-8. + try: + shebang.encode('utf-8') + except UnicodeEncodeError: + raise ValueError( + "The shebang ({!r}) is not encodable " "to utf-8".format(shebang) + ) + + # If the script is encoded to a custom encoding (use a + # #coding:xxx cookie), the shebang has to be encodable to + # the script encoding too. + try: + shebang.encode(encoding) + except UnicodeEncodeError: + raise ValueError( + "The shebang ({!r}) is not encodable " + "to the script encoding ({})".format(shebang, encoding) + ) |