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comparison design.txt @ 64:19e9e220bf68

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Convenient commands constitute hi-level API. org.tmatesoft namespace, GPL2 statement
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Fri, 21 Jan 2011 05:56:43 +0100
parents fac8e7fcc8b0
children c25c5c348d1b
comparison
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63:a47530a2ea12 64:19e9e220bf68
47 47
48 ??? encodings of fncache, .hgignore, dirstate 48 ??? encodings of fncache, .hgignore, dirstate
49 ??? http://mercurial.selenic.com/wiki/Manifest says "Multiple changesets may refer to the same manifest revision". To me, each changeset 49 ??? http://mercurial.selenic.com/wiki/Manifest says "Multiple changesets may refer to the same manifest revision". To me, each changeset
50 changes repository, hence manifest should update nodeids of the files it lists, effectively creating new manifest revision. 50 changes repository, hence manifest should update nodeids of the files it lists, effectively creating new manifest revision.
51 51
52 ? hg status, compare revision and local file with kw expansion and eol extension
53 ? subrepos in log, status (-S) and manifest commands
54
55 Commands to get CommandContext where they may share various caches (e.g. StatusCollector)
56
52 >>>> Effective file read/data access 57 >>>> Effective file read/data access
53 ReadOperation, Revlog does: repo.getFileSystem().run(this.file, new ReadOperation(), long start=0, long end = -1) 58 ReadOperation, Revlog does: repo.getFileSystem().run(this.file, new ReadOperation(), long start=0, long end = -1)
54 ReadOperation gets buffer (of whatever size, as decided by FS impl), parses it and then reports if needs more data. 59 ReadOperation gets buffer (of whatever size, as decided by FS impl), parses it and then reports if needs more data.
55 This helps to ensure streams are closed after reading, allows caching (if the same file (or LRU) is read few times in sequence) 60 This helps to ensure streams are closed after reading, allows caching (if the same file (or LRU) is read few times in sequence)
56 and allows buffer management (i.e. reuse. Single buffer for all reads). 61 and allows buffer management (i.e. reuse. Single buffer for all reads).