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https://github.com/jart/cosmopolitan.git
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b420ed8248
This change gets the Python codebase into a state where it conforms to the conventions of this codebase. It's now possible to include headers from Python, without worrying about ordering. Python has traditionally solved that problem by "diamonding" everything in Python.h, but that's problematic since it means any change to any Python header invalidates all the build artifacts. Lastly it makes tooling not work. Since it is hard to explain to Emacs when I press C-c C-h to add an import line it shouldn't add the header that actually defines the symbol, and instead do follow the nonstandard Python convention. Progress has been made on letting Python load source code from the zip executable structure via the standard C library APIs. System calss now recognizes zip!FILENAME alternative URIs as equivalent to zip:FILENAME since Python uses colon as its delimiter. Some progress has been made on embedding the notice license terms into the Python object code. This is easier said than done since Python has an extremely complicated ownership story. - Some termios APIs have been added - Implement rewinddir() dirstream API - GetCpuCount() API added to Cosmopolitan Libc - More bugs in Cosmopolitan Libc have been fixed - zipobj.com now has flags for mangling the path - Fixed bug a priori with sendfile() on certain BSDs - Polyfill F_DUPFD and F_DUPFD_CLOEXEC across platforms - FIOCLEX / FIONCLEX now polyfilled for fast O_CLOEXEC changes - APE now supports a hybrid solution to no-self-modify for builds - Many BSD-only magnums added, e.g. O_SEARCH, O_SHLOCK, SF_NODISKIO
87 lines
2.7 KiB
Python
87 lines
2.7 KiB
Python
import marshal
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import bkfile
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# Write a file containing frozen code for the modules in the dictionary.
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header = """
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#include "third_party/python/Include/Python.h"
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static struct _frozen _PyImport_FrozenModules[] = {
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"""
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trailer = """\
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{0, 0, 0} /* sentinel */
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};
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"""
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# if __debug__ == 0 (i.e. -O option given), set Py_OptimizeFlag in frozen app.
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default_entry_point = """
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int
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main(int argc, char **argv)
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{
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extern int Py_FrozenMain(int, char **);
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""" + ((not __debug__ and """
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Py_OptimizeFlag++;
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""") or "") + """
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PyImport_FrozenModules = _PyImport_FrozenModules;
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return Py_FrozenMain(argc, argv);
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}
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"""
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def makefreeze(base, dict, debug=0, entry_point=None, fail_import=()):
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if entry_point is None: entry_point = default_entry_point
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done = []
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files = []
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mods = sorted(dict.keys())
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for mod in mods:
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m = dict[mod]
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mangled = "__".join(mod.split("."))
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if m.__code__:
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file = 'M_' + mangled + '.c'
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with bkfile.open(base + file, 'w') as outfp:
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files.append(file)
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if debug:
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print("freezing", mod, "...")
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str = marshal.dumps(m.__code__)
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size = len(str)
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if m.__path__:
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# Indicate package by negative size
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size = -size
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done.append((mod, mangled, size))
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writecode(outfp, mangled, str)
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if debug:
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print("generating table of frozen modules")
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with bkfile.open(base + 'frozen.c', 'w') as outfp:
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for mod, mangled, size in done:
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outfp.write('extern unsigned char M_%s[];\n' % mangled)
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outfp.write(header)
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for mod, mangled, size in done:
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outfp.write('\t{"%s", M_%s, %d},\n' % (mod, mangled, size))
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outfp.write('\n')
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# The following modules have a NULL code pointer, indicating
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# that the frozen program should not search for them on the host
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# system. Importing them will *always* raise an ImportError.
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# The zero value size is never used.
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for mod in fail_import:
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outfp.write('\t{"%s", NULL, 0},\n' % (mod,))
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outfp.write(trailer)
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outfp.write(entry_point)
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return files
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# Write a C initializer for a module containing the frozen python code.
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# The array is called M_<mod>.
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def writecode(outfp, mod, str):
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outfp.write('unsigned char M_%s[] = {' % mod)
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for i in range(0, len(str), 16):
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outfp.write('\n\t')
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for c in bytes(str[i:i+16]):
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outfp.write('%d,' % c)
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outfp.write('\n};\n')
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## def writecode(outfp, mod, str):
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## outfp.write('unsigned char M_%s[%d] = "%s";\n' % (mod, len(str),
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## '\\"'.join(map(lambda s: repr(s)[1:-1], str.split('"')))))
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