mirror of
https://gitlab.com/80486DX2-66/gists
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109 lines
3.2 KiB
Python
109 lines
3.2 KiB
Python
#!/usr/bin/python3
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# git_commit_simulator.py
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#
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# Author: Intel A80486DX2-66
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# License: Creative Commons Zero 1.0 Universal
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from datetime import datetime
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from difflib import unified_diff
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from typing import List, Union
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import random
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import string
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FAKE_HASH_ALPHABET = string.digits + string.ascii_lowercase[:6]
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def diff_strings(old: str, new: str) -> str:
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old += "\n" if old else ""
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new += "\n" if new else ""
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return "".join(list(unified_diff(old.splitlines(keepends=True),
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new.splitlines(keepends=True)))[2:])[:-1]
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def fake_hash(length: int) -> str:
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return "".join([random.choice(FAKE_HASH_ALPHABET) for i in range(length)])
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def styled_date(dt: datetime = None) -> str:
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if not dt:
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dt = datetime.now()
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# res = datetime.strftime(dt, "%a %b %d %H:%M:%S %Y")
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res = dt.ctime()
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offset = dt.astimezone().utcoffset().seconds
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positive = offset >= 0
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hours, minutes = offset // 3600, offset % 3600
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hours, minutes = str(hours).zfill(2), str(minutes).zfill(2)
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sign = "+" if positive else "-"
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res += " " + sign + hours + minutes
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return res
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def commit(*, commit_message: Union[List[str], str], branch_name: str = "main",
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old_content: str = None, new_content: str, file: str, name: str,
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email: str, mode: str = "100644", dt: datetime = None) -> str:
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if isinstance(commit_message, str):
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commit_message = [commit_message + "\n"]
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commit_message = [" " * 4 + line if line else "" for line in commit_message]
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if len(commit_message) > 1:
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commit_message.insert(1, "")
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commit_message = "\n".join(commit_message)
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new_file = False
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if old_content is None:
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new_file = True
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old_content = ""
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first_file = "/dev/null" if new_file else file
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second_file = "b/" + file
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first_hash = "0" * 7 if new_file else fake_hash(7)
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index_mode_lines = f"index {first_hash}..{fake_hash(7)}"
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if new_file:
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index_mode_lines = f"""\
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new file mode {mode}
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{index_mode_lines}"""
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else:
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index_mode_lines += f" {mode}"
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diff = diff_strings(old_content, new_content)
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return f"""\
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commit {fake_hash(40)} (HEAD -> {branch_name})
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Author: {name} <{email}>
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Date: {styled_date(dt)}
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{commit_message}
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diff --git {"a/" + file} {second_file}
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{index_mode_lines}
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--- {first_file}
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+++ {second_file}
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{diff}"""
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example = lambda: commit( \
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commit_message=["Hello, world!", "Greetings :-)", "Lorem ipsum"], \
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# old_content="henlo", \
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new_content="hello", \
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file="message.txt", \
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name="Intel A80486DX2-66", \
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email="larry.holst@disroot.org")
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if __name__ == "__main__":
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from sys import argv
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if "--example" in argv:
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print("Example output:")
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print(example())
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raise SystemExit
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print("This script is not interactive. Please run Python 3 interpreter,\n"
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"import this file, and use function git_commit_simulator.commit()")
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print()
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print("""Function prototype:
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def commit(*, commit_message: Union[List[str], str], branch_name: str = "main",
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old_content: str = None, new_content: str, file: str, name: str,
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email: str, mode: str = "100644", dt: datetime = None) -> str:""")
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print()
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print("Run with --example to get an example output")
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