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ChangeLog Prototype; methods for handling changelog
| File Size: | 700 lines (26 kb) |
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| __construct($id, $chunk_size = 8192) X-Ref |
| Constructor param: string $id page id param: int $chunk_size maximum block size read from file |
| isCurrentRevision($rev) X-Ref |
| Check whether given revision is the current page return: bool true if $rev is current revision, otherwise false param: int $rev timestamp of current page |
| isLastRevision($rev = null) X-Ref |
| Checks if the revision is last revision return: bool true if $rev is last revision, otherwise false param: int $rev revision timestamp |
| currentRevision() X-Ref |
| Return the current revision identifier The "current" revision means current version of the page or media file. It is either identical with or newer than the "last" revision, that depends on whether the file has modified, created or deleted outside of DokuWiki. The value of identifier can be determined by timestamp as far as the file exists, otherwise it must be assigned larger than any other revisions to keep them sortable. return: int|false revision timestamp |
| lastRevision() X-Ref |
| Return the last revision identifier, date value of the last entry of the changelog return: int|false revision timestamp |
| parseAndCacheLogLine($value) X-Ref |
| Parses a changelog line into its components and save revision info to the cache pool return: array|bool parsed line or false param: string $value changelog line |
| getRevisionInfo($rev, $retrieveCurrentRevInfo = true) X-Ref |
| Get the changelog information for a specific revision (timestamp) Adjacent changelog lines are optimistically parsed and cached to speed up consecutive calls to getRevisionInfo. For large changelog files, only the chunk containing the requested changelog line is read. author: Ben Coburn <btcoburn@silicodon.net> author: Kate Arzamastseva <pshns@ukr.net> return: bool|array false or array with entries: param: int $rev revision timestamp param: bool $retrieveCurrentRevInfo allows to skip for getting other revision info in the |
| getRevisions($first, $num) X-Ref |
| Return a list of page revisions numbers Does not guarantee that the revision exists in the attic, only that a line with the date exists in the changelog. By default the current revision is skipped. The current revision is automatically skipped when the page exists. See $INFO['meta']['last_change'] for the current revision. A negative $first let read the current revision too. For efficiency, the log lines are parsed and cached for later calls to getRevisionInfo. Large changelog files are read backwards in chunks until the requested number of changelog lines are received. author: Ben Coburn <btcoburn@silicodon.net> author: Kate Arzamastseva <pshns@ukr.net> return: array with the revision timestamps param: int $first skip the first n changelog lines param: int $num number of revisions to return |
| getRelativeRevision($rev, $direction) X-Ref |
| Get the nth revision left or right-hand side for a specific page id and revision (timestamp) For large changelog files, only the chunk containing the reference revision $rev is read and sometimes a next chunk. Adjacent changelog lines are optimistically parsed and cached to speed up consecutive calls to getRevisionInfo. return: bool|int param: int $rev revision timestamp used as start date param: int $direction give position of returned revision with respect to $rev; |
| getRevisionsAround($rev1, $rev2, $max = 50) X-Ref |
| Returns revisions around rev1 and rev2 When available it returns $max entries for each revision return: array with two arrays with revisions surrounding rev1 respectively rev2 param: int $rev1 oldest revision timestamp param: int $rev2 newest revision timestamp (0 looks up last revision) param: int $max maximum number of revisions returned |
| getLastRevisionAt($date_at) X-Ref |
| Return an existing revision for a specific date which is the current one or younger or equal then the date return: string revision ('' for current) param: number $date_at timestamp |
| retrieveRevisionsAround($rev, $max) X-Ref |
| Collect the $max revisions near to the timestamp $rev Ideally, half of retrieved timestamps are older than $rev, another half are newer. The returned array $requestedRevs may not contain the reference timestamp $rev when it does not match any revision value recorded in changelog. return: bool|array param: int $rev revision timestamp param: int $max maximum number of revisions to be returned |
| getCurrentRevisionInfo() X-Ref |
| Get the current revision information, considering external edit, create or deletion When the file has not modified since its last revision, the information of the last change that had already recorded in the changelog is returned as current change info. Otherwise, the change information since the last revision caused outside DokuWiki should be returned, which is referred as "external revision". The change date of the file can be determined by timestamp as far as the file exists, however this is not possible when the file has already deleted outside of DokuWiki. In such case we assign 1 sec before current time() for the external deletion. As a result, the value of current revision identifier may change each time because: 1) the file has again modified outside of DokuWiki, or 2) the value is essentially volatile for deleted but once existed files. author: Satoshi Sahara <sahara.satoshi@gmail.com> return: bool|array false when page had never existed or array with entries: |
| traceCurrentRevision($rev) X-Ref |
| Mechanism to trace no-actual external current revision param: int $rev |