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bea83b2999
* Use portable Python for map merge hooks, other tools (#55658) * Add .dmm merge driver (#55699) This is kind of a prototype. It only fully handles a few situations, and doesn't produce particularly easy-to-read conflict markers when it fails. I hope that it can be useful at least some of the time, can be improved over time, and that the lessons learned can influence a future interactive GUI conflict resolver (integrated into StrongDMM?). In the worst case, one can fall back to the tried and true "manually re-do one side's changes" strategy. **Automatic use**: In `tools/hooks/`, run `Install.bat` **Manual use**, for Git GUIs that don't run merge drivers: while a merge is in progress, in `tools/mapmerge2/`, double-click `Resolve Map Conflicts.bat` This PR also removes the error-prone "Prepare Maps.bat" / "mapmerge.bat" workflow. Those who aren't using the hooks should instead use `Run Before Committing.bat` before committing. First-time contributors who opened a PR without map merging can be advised to run `I Forgot To Map Merge.bat`. * Fix loose double-quot in tradership_faction.dmm Co-authored-by: Tad Hardesty <tad@platymuus.com>
70 lines
2.5 KiB
Python
70 lines
2.5 KiB
Python
#!/usr/bin/env python3
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import os
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import sys
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import pygit2
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from . import dmm
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from .mapmerge import merge_map
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def main(repo, *, use_workdir=False):
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if repo.index.conflicts:
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print("You need to resolve merge conflicts first.")
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return 1
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try:
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repo.lookup_reference('MERGE_HEAD')
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print("Not running mapmerge for merge commit.")
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return 0
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except KeyError:
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pass
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target_statuses = pygit2.GIT_STATUS_INDEX_MODIFIED | pygit2.GIT_STATUS_INDEX_NEW
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skip_to_file_statuses = pygit2.GIT_STATUS_WT_DELETED | pygit2.GIT_STATUS_WT_MODIFIED
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if use_workdir:
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target_statuses |= pygit2.GIT_STATUS_WT_MODIFIED | pygit2.GIT_STATUS_WT_NEW
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skip_to_file_statuses &= ~pygit2.GIT_STATUS_WT_MODIFIED
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changed = 0
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for path, status in repo.status().items():
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if path.endswith(".dmm") and (status & target_statuses):
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# read the index
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index_entry = repo.index[path]
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if use_workdir:
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index_map = dmm.DMM.from_file(os.path.join(repo.workdir, path))
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else:
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index_map = dmm.DMM.from_bytes(repo[index_entry.id].read_raw())
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try:
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head_blob = repo[repo[repo.head.target].tree[path].id]
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except KeyError:
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# New map, no entry in HEAD
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print(f"Converting new map: {path}", flush=True)
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assert (status & pygit2.GIT_STATUS_INDEX_NEW)
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merged_map = index_map
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else:
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# Entry in HEAD, merge the index over it
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print(f"Converting map: {path}", flush=True)
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assert not (status & pygit2.GIT_STATUS_INDEX_NEW)
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head_map = dmm.DMM.from_bytes(head_blob.read_raw())
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merged_map = merge_map(index_map, head_map)
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# write to the index
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blob_id = repo.create_blob(merged_map.to_bytes())
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repo.index.add(pygit2.IndexEntry(path, blob_id, index_entry.mode))
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changed += 1
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# write to the working directory if that's clean
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if status & skip_to_file_statuses:
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print(f"Warning: {path} has unindexed changes, not overwriting them")
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else:
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merged_map.to_file(os.path.join(repo.workdir, path))
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if changed:
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repo.index.write()
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return 0
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if __name__ == '__main__':
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repo = pygit2.Repository(pygit2.discover_repository(os.getcwd()))
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exit(main(repo, use_workdir='--use-workdir' in sys.argv))
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