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skip same file locally

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fyears 2021-10-24 22:12:32 +08:00
parent 5a56526de1
commit 5ef032523a
2 changed files with 39 additions and 12 deletions
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24
docs/algorithm.md
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@ -14,14 +14,16 @@ Assuming all sources are reliable.
We list all combinations mutually exclusive and collectively exhaustive.
| ID | Remote Files | Local files | Local delete rename history | Extra | Decision |
| --- | ------------ | ----------- | --------------------------- | ----------------------------------------------- | ------------------------------------------------------------------------------------------------- |
| 1 | exist | exist | ignore | mtime_remote > mtime_local | download remote file, create local folder if not exists, clear local history if exists |
| 2 | exist | exist | ignore | mtime_remote <= mtime_local | upload local file, create remote folder if not exists, clear local history if exists |
| 3 | exist | exist | ignore | If local is a folder. mtime_local === undefined | clear local history if exists. TODO: what if a folder and a previous file share the same name? |
| 4 | exist | not exist | exist | mtime_remote >= delete_time_local | download remote file, create folder if not exists |
| 5 | exist | not exist | exist | mtime_remote < delete_time_local | delete remote file, clear local history |
| 6 | exist | not exist | not exist | | download remote file, create folder if not exists |
| 7 | not exist | exist | ignore | If local is a single file. | upload local file, create remote folder if not exists, clear local history if exists |
| 8 | not exist | exist | ignore | If local is a folder. | upload local files recursively, create remote folder if not exists, clear local history if exists |
| 9 | not exist | not exist | ignore | | clear local history if exists |
| ID | Remote Files | Local files | Local delete rename history | Extra | Decision |
| --- | ------------ | ----------- | --------------------------- | ---------------------------------------------------------- | ------------------------------------------------------------------------------------------------- |
| 1 | exist | exist | ignore | mtime_remote > mtime_local | download remote file, create local folder if not exists, clear local history if exists |
| 2 | exist | exist | ignore | mtime_remote < mtime_local | upload local file, create remote folder if not exists, clear local history if exists |
| 3 | exist | exist | ignore | mtime_remote === mtime_local && size_remote === size_local | clear local history if exists (the file was synced and no changes after last sync) |
| 4 | exist | exist | ignore | mtime_remote === mtime_local && size_remote !== size_local | upload local file, clear local history if exists (we always prefer local to remote) |
| 5 | exist | exist | ignore | If local is a folder. mtime_local === undefined | clear local history if exists. TODO: what if a folder and a previous file share the same name? |
| 6 | exist | not exist | exist | mtime_remote >= delete_time_local | download remote file, create folder if not exists |
| 7 | exist | not exist | exist | mtime_remote < delete_time_local | delete remote file, clear local history |
| 8 | exist | not exist | not exist | | download remote file, create folder if not exists |
| 9 | not exist | exist | ignore | If local is a single file. | upload local file, create remote folder if not exists, clear local history if exists |
| 10 | not exist | exist | ignore | If local is a folder. | upload local files recursively, create remote folder if not exists, clear local history if exists |
| 11 | not exist | not exist | ignore | | clear local history if exists |

27
src/sync.ts
View File

@ -28,6 +28,8 @@ interface FileOrFolderMixedState {
mtime_local?: number;
mtime_remote?: number;
delete_time_local?: number;
size_local?: number;
size_remote?: number;
decision?: DecisionType;
syncDone?: "done";
}
@ -46,11 +48,13 @@ export const ensembleMixedStates = (
key: key,
exist_remote: true,
mtime_remote: entry.LastModified.valueOf(),
size_remote: entry.Size,
};
if (results.hasOwnProperty(key)) {
results[key].key = r.key;
results[key].exist_remote = r.exist_remote;
results[key].mtime_remote = r.mtime_remote;
results[key].size_remote = r.size_remote;
} else {
results[key] = r;
}
@ -68,6 +72,7 @@ export const ensembleMixedStates = (
key: entry.path,
exist_local: true,
mtime_local: entry.stat.mtime,
size_local: entry.stat.size,
};
} else if (entry instanceof TFolder) {
key = `${entry.path}/`;
@ -75,6 +80,7 @@ export const ensembleMixedStates = (
key: key,
exist_local: true,
mtime_local: undefined,
size_local: 0,
};
} else {
throw Error(`unexpected ${entry}`);
@ -84,6 +90,7 @@ export const ensembleMixedStates = (
results[key].key = r.key;
results[key].exist_local = r.exist_local;
results[key].mtime_local = r.mtime_local;
results[key].size_local = r.size_local;
} else {
results[key] = r;
}
@ -156,7 +163,25 @@ export const getOperation = (
r.exist_local &&
r.mtime_remote !== undefined &&
r.mtime_local !== undefined &&
r.mtime_remote <= r.mtime_local
r.mtime_remote < r.mtime_local
) {
r.decision = "upload_clearhist";
} else if (
r.exist_remote &&
r.exist_local &&
r.mtime_remote !== undefined &&
r.mtime_local !== undefined &&
r.mtime_remote === r.mtime_local &&
r.size_local === r.size_remote
) {
r.decision = "skip";
} else if (
r.exist_remote &&
r.exist_local &&
r.mtime_remote !== undefined &&
r.mtime_local !== undefined &&
r.mtime_remote === r.mtime_local &&
r.size_local === r.size_remote
) {
r.decision = "upload_clearhist";
} else if (