Mercurial > jhg
annotate design.txt @ 17:571e1b2cc3f7
Query file for its parents. Demo of recently added ignore and digest support from within cat cmd
author | Artem Tikhomirov <tikhomirov.artem@gmail.com> |
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date | Mon, 27 Dec 2010 01:43:08 +0100 |
parents | 254078595653 |
children | 02ee376bee79 |
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Repository detection from local/specified directory
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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1 FileStructureWalker (pass HgFile, HgFolder to callable; which can ask for VCS data from any file) |
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Repository detection from local/specified directory
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2 External uses: user browses files, selects one and asks for its history |
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3 Params: tip/revision; |
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Repository detection from local/specified directory
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4 Implementation: manifest |
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Repository detection from local/specified directory
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5 |
a3576694a4d1
Repository detection from local/specified directory
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6 Log --rev |
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Repository detection from local/specified directory
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7 Log <file> |
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Shaping out low-level Hg structures
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8 HgDataFile.history() or Changelog.history(file)? |
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Shaping out low-level Hg structures
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9 |
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10 |
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11 Changelog.all() to return list with placeholder, not-parsed elements (i.e. read only compressedLen field and skip to next record), so that |
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Shaping out low-level Hg structures
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12 total number of elements in the list is correct |
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Repository detection from local/specified directory
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13 |
a3576694a4d1
Repository detection from local/specified directory
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14 hg cat |
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15 Implementation: logic to find file by name in the repository is the same with Log and other commands |
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16 |
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Shaping out low-level Hg structures
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17 |
08db726a0fb7
Shaping out low-level Hg structures
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18 Revlog |
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aa1912c70b36
Fix offset issue for inline revlogs. Commandline processing.
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19 What happens when big entry is added to a file - when it detects it can't longer fit into .i and needs .d? Inline flag and .i format changes? |
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Fix offset issue for inline revlogs. Commandline processing.
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20 |
aa1912c70b36
Fix offset issue for inline revlogs. Commandline processing.
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21 |
aa1912c70b36
Fix offset issue for inline revlogs. Commandline processing.
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22 ---------- |
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5abe5af181bd
Ant script to build commands and run sample
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23 + support patch from baseRev + few deltas (although done in a way patches are applied one by one instead of accumulated) |
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Fix offset issue for inline revlogs. Commandline processing.
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24 + command-line samples (-R, filenames) (Log & Cat) to show on any repo |
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Ant script to build commands and run sample
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25 +buildfile + run samples |
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d6d2a630f4a6
Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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26 *input stream impl + lifecycle. Step forward with FileChannel and ByteBuffer, although questionable accomplishment (looks bit complicated, cumbersome) |
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442dc6ee647b
Show correct time
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27 + dirstate.mtime |
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aa1912c70b36
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28 |
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Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
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29 calculate sha1 digest for file to see I can deal with nodeid |
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d46773d89a19
Boundary error in dirstate entry, explicit encoding to face troubles (if any) asap.
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30 DataAccess - collect debug info (buffer misses, file size/total read operations) to find out better strategy to buffer size detection. |
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31 delta merge |
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Ant script to build commands and run sample
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32 Changeset to get index (local revision number) |
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Show correct time
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33 .hgignored processing |
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34 RevisionWalker (on manifest) and WorkingCopyWalker (io.File) talking to ? and/or dirstate |
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571e1b2cc3f7
Query file for its parents. Demo of recently added ignore and digest support from within cat cmd
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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35 Revlog.Inspector to get nodeid array of meaningful data exact size (nor heading 00 bytes, nor 12 extra bytes from the spec) |
571e1b2cc3f7
Query file for its parents. Demo of recently added ignore and digest support from within cat cmd
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
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36 |
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d6d2a630f4a6
Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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37 |
d6d2a630f4a6
Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
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38 |
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865bf07f381f
Basic hgignore handling
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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39 ??? encodings of fncache, .hgignore, dirstate |
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254078595653
Print manifest nodeid
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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40 ??? http://mercurial.selenic.com/wiki/Manifest says "Multiple changesets may refer to the same manifest revision". To me, each changeset |
254078595653
Print manifest nodeid
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41 changes repository, hence manifest should update nodeids of the files it lists, effectively creating new manifest revision. |
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Basic hgignore handling
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42 |
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Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
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43 >>>> Effective file read/data access |
d6d2a630f4a6
Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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44 ReadOperation, Revlog does: repo.getFileSystem().run(this.file, new ReadOperation(), long start=0, long end = -1) |
d6d2a630f4a6
Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
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45 ReadOperation gets buffer (of whatever size, as decided by FS impl), parses it and then reports if needs more data. |
d6d2a630f4a6
Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
6
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46 This helps to ensure streams are closed after reading, allows caching (if the same file (or LRU) is read few times in sequence) |
d6d2a630f4a6
Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
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47 and allows buffer management (i.e. reuse. Single buffer for all reads). |
d6d2a630f4a6
Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
6
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48 Scheduling multiple operations (in future, to deal with writes - single queue for FS operations - no locks?) |
d6d2a630f4a6
Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
6
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49 |
d6d2a630f4a6
Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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50 File access: |
d6d2a630f4a6
Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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51 * NIO and mapped files - should be fast. Although seems to give less control on mem usage. |
d6d2a630f4a6
Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
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52 * Regular InputStreams and chunked stream on top - allocate List<byte[]>, each (but last) chunk of fixed size (depending on initial file size) |
d6d2a630f4a6
Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
6
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53 |
d6d2a630f4a6
Access to underlaying file data wrapped into own Access object, implemented with FileChannel and ByteBuffer
Artem Tikhomirov <tikhomirov.artem@gmail.com>
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54 <<<<< |