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[+] Triangular diff
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d752737c38
commit
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@ -1,11 +1,12 @@
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#!/usr/bin/env python3
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import difflib
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import os
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from pathlib import Path
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from subprocess import check_output
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import opencc
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from hypy_utils import write
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from hypy_utils.tqdm_utils import pmap
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from hypy_utils.tqdm_utils import pmap, smap
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ALLOWED_DIRS = {Path(p) for p in ['people']}
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ALLOWED_SUF = {'.json5', '.md'}
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@ -15,6 +16,7 @@ HANS_TO_HANT = opencc.OpenCC('s2t.json')
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D_SELF = Path(__file__).parent
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D_PAST = D_SELF / '.convert_past'
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D_LAST_HASH = D_PAST / 'last-hash.txt'
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LAST_HASH = D_LAST_HASH.read_text().strip()
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def list_files() -> set[Path]:
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@ -30,27 +32,126 @@ def list_files() -> set[Path]:
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return files
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def inline_diff(old: str, new: str) -> tuple[list[str], list[str], list[tuple[str, str]]]:
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matcher = difflib.SequenceMatcher(None, old, new)
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a: list[str] = []
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d: list[str] = []
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r: list[tuple[str, str]] = []
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def find_change(tag, s0, e0, s1, e1):
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# Tag can be replace, delete, insert, equal
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if tag == 'replace':
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r.append((old[s0:e0], new[s1:e1]))
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if tag == 'delete':
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d.append(old[s0:e0])
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if tag == 'insert':
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a.append(new[s1:e1])
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for t in matcher.get_opcodes():
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find_change(*t)
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return a, d, r
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def inline_diff_apply(old: str, new: str, alt: str) -> str:
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"""
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Apply inline diff between two strings to an alternative string
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Changes between new and old will be applied to alt, while changes in alt will not be removed.
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:param old: Old string
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:param new: New string
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:param alt: Old alternative string to apply to
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:return: New alternative string
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"""
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# Find differences between old and new
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a, d, r = inline_diff(old, new)
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# Find differences between alt and new, apply differences that are present between old and new
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matcher = difflib.SequenceMatcher(None, alt, new)
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inc = 0
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for tag, s0, e0, s1, e1 in matcher.get_opcodes():
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s0 += inc
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e0 += inc
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# Tag can be replace, delete, insert, equal
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if tag == 'replace':
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df = (alt[s0:e0], new[s1:e1])
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if df not in r:
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continue
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print(f'[Diff] Applying [U] {repr(df)}')
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alt = alt[:s0] + new[s1:e1] + alt[e0:]
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inc += (e1 - s1) - (e0 - s0)
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if tag == 'delete':
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if alt[s0:e0] not in d:
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continue
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print(f'[Diff] Applying [-] {repr(alt[s0:e0])}')
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alt = alt[:s0] + alt[e0:]
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inc -= e0 - s0
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if tag == 'insert':
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if new[s1:e1] not in a:
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continue
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print(f'[Diff] Applying [+] {repr(new[s1:e1])}')
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alt = alt[:s0] + new[s1:e1] + alt[s0:]
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inc += e1 - s1
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return alt
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def process_file(f: Path):
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if '.zh_hant.' in f.name:
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return
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hans = f.read_text()
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converted = HANS_TO_HANT.convert(hans)
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f_hant = f.with_name(f'{f.stem}.zh_hant{f.suffix}')
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if not f_hant.is_file():
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# If hant file doesn't exist, create
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f_hant.write_text(HANS_TO_HANT.convert(f.read_text()))
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f_hant.write_text(converted)
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else:
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# TODO
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pass
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hant_current = f_hant.read_text()
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# Hant file exists, use diff
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# Obtain original version from git
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past = check_output(['git', 'show', f"{LAST_HASH}:{f.relative_to('.')}"]).decode()
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# Nothing changed, skip
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if past == hans:
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return
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print(f"\n============ CHANGED FILE: {f} ============")
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print("> Trying to apply diff...")
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# Diff: Obtain a list of inline differences from the HANS change (converted to HANT)
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a, d, r = inline_diff(HANS_TO_HANT.convert(past), converted)
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print('> Diff from old to new:', a, d, r)
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a, d, r = inline_diff(hant_current, converted)
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print('> Diff from hant to new:', a, d, r)
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hant_new = inline_diff_apply(HANS_TO_HANT.convert(past), converted, hant_current)
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f_hant.write_text(hant_new)
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a, d, r = inline_diff(hant_new, converted)
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print('> Diff from hant_new to new:', a, d, r)
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print(f"============ DONE ============")
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if __name__ == '__main__':
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# Process files
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pmap(process_file, list_files())
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smap(process_file, list_files())
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# Write last hash
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last_commit = check_output(['git', 'rev-parse', 'HEAD'])
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last_commit = check_output(['git', 'rev-parse', 'HEAD']).decode()
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write(D_LAST_HASH, last_commit)
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print('Done')
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