Remove unused file
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1 changed files with 0 additions and 136 deletions
136
zapp/__main__.py
136
zapp/__main__.py
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"""
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The Zapp compiler.
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"""
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import argparse
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import json
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import os
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import pathlib
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import stat
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import zipfile
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parser = argparse.ArgumentParser(description="The (bootstrap) Zapp compiler")
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parser.add_argument("-o", "--out", dest="output", help="Output target file")
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parser.add_argument("-d", "--debug", dest="debug", action="store_true", default=False)
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parser.add_argument("manifest", help="The (JSON) manifest")
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MAIN_TEMPLATE = """\
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# -*- coding: utf-8 -*-
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\"\"\"Zapp-generated __main__\""\"
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from importlib import import_module
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# FIXME: This is absolutely implementation details.
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# Execing would be somewhat nicer
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from runpy import _run_module_as_main
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for script in {scripts!r}:
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print(script)
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mod, sep, fn = script.partition(':')
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mod_ok = all(part.isidentifier() for part in mod.split('.'))
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fn_ok = all(part.isidentifier() for part in fn.split('.'))
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if not mod_ok:
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raise RuntimeError("Invalid module reference {{!r}}".format(mod))
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if fn and not fn_ok:
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raise RuntimeError("Invalid function reference {{!r}}".format(fn))
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if mod and fn and False:
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mod = import_module(mod)
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getattr(mod, fn)()
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else:
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_run_module_as_main(mod)
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"""
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def make_dunder_main(manifest):
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"""Generate a __main__.py file for the given manifest."""
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prelude = manifest.get("prelude_points", [])
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main = manifest.get("entry_point")
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scripts = prelude + [main]
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return MAIN_TEMPLATE.format(**locals())
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def dir_walk_prefixes(path):
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"""Helper. Walk all slices of a path."""
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segments = []
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yield ""
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for segment in path.split("/"):
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segments.append(segment)
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yield os.path.join(*segments)
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def generate_dunder_inits(manifest):
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"""Hack the manifest to insert __init__ files as needed."""
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sources = manifest["sources"]
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for input_file in list(sources.keys()):
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for path in dir_walk_prefixes(os.path.dirname(input_file)):
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init_file = os.path.join(path, "__init__.py")
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if init_file not in sources:
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sources[init_file] = ""
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return manifest
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def generate_manifest(opts, manifest):
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"""Insert the manifest.json file."""
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manifest["sources"]["zapp/manifest.json"] = opts.manifest
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return manifest
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def main():
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opts, args = parser.parse_known_args()
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with open(opts.manifest) as fp:
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manifest = json.load(fp)
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manifest = generate_manifest(opts, manifest)
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# Patch the manifest to insert needed __init__ files
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# NOTE: This has to be the LAST thing we do
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manifest = generate_dunder_inits(manifest)
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if opts.debug:
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from pprint import pprint
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pprint(
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{
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"opts": {
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k: getattr(opts, k) for k in dir(opts) if not k.startswith("_")
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},
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"manifest": manifest,
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}
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)
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with open(opts.output, "w") as zapp:
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shebang = "#!" + manifest["shebang"] + "\n"
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zapp.write(shebang)
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# Now we're gonna build the zapp from the manifest
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with zipfile.ZipFile(opts.output, "a") as zapp:
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# Append the __main__.py generated record
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zapp.writestr("__main__.py", make_dunder_main(manifest))
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# Append user-specified sources
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for dest, src in manifest["sources"].items():
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if src == "":
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zapp.writestr(dest, "")
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else:
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zapp.write(src, dest)
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# Append user-specified libraries
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# FIXME
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zapp = pathlib.Path(opts.output)
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zapp.chmod(zapp.stat().st_mode | stat.S_IEXEC)
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if __name__ == "__main__" or 1:
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main()
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