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ee7a0f1139
A PoC that exposes single function `enry.language_by_extension()` and a small number of helpers to deal with string coversion between Go<->C<->Python. Signed-off-by: Alexander Bezzubov <bzz@apache.org>
41 lines
893 B
Python
41 lines
893 B
Python
"""
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Python library calling enry Go implementation trough cFFI (API, out-of-line) and Cgo.
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"""
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from _c_enry import ffi, lib
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def go_str_to_py(go_str):
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str_len = go_str.n
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if str_len > 0:
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return ffi.unpack(go_str.p, go_str.n).decode()
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return ""
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def py_str_to_go(py_str):
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str_bytes = py_str.encode()
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c_str = ffi.new("char[]", str_bytes)
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go_str = ffi.new("_GoString_ *", [c_str, len(str_bytes)])
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return go_str[0]
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def language_by_extension(filename: str) -> str:
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fName = py_str_to_go(filename)
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guess = lib.GetLanguageByExtension(fName)
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lang = go_str_to_py(guess.r0)
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return lang
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## Test
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def main():
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files = ["Parse.hs", "some.cpp", "and.go", "type.h"]
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for filename in files:
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lang = language_by_extension(filename)
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print("file: {:10s} language: '{}'".format(filename, lang))
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if __name__ == "__main__":
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main()
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