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* [PATCH] Make -C less eager.Junio C Hamano2005-06-19
| | | | | | | | | | | | | | | Like diff-tree, this patch makes -C option for diff-* brothers to use only pre-image of modified files as rename/copy detection by default. Give --find-copies-harder to use unmodified files to find copies from as well. This also fixes "diff-files -C" problem earlier noticed by Linus. It was feeding the null sha1 even when the file in the work tree was known to match what is in the index file. This resulted in diff-files showing everything in the project. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Add --diff-filter= output restriction to diff-* family.Junio C Hamano2005-06-12
| | | | | | | | | | | | | | | | | | | | | | | | | | This is a halfway between debugging aid and a helper to write an ultra-smart merge scripts. The new option takes a string that consists of a list of "status" letters, and limits the diff output to only those classes of changes, with two exceptions: - A broken pair (aka "complete rewrite"), does not match D (deleted) or N (created). Use B to look for them. - The letter "A" in the diff-filter string does not match anything itself, but causes the entire diff that contains selected patches to be output (this behaviour is similar to that of --pickaxe-all for the -S option). For example, $ git-rev-list HEAD | git-diff-tree --stdin -s -v -B -C --diff-filter=BCR shows a list of commits that have complete rewrite, copy, or rename. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] diff: Clean up diff_scoreopt_parse().Junio C Hamano2005-06-03
| | | | | | | | | | | This cleans up diff_scoreopt_parse() function that is used to parse the fractional notation -B, -C and -M option takes. The callers are modified to check for errors and complain. Earlier they silently ignored malformed input and falled back on the default. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] diff: Fix docs and add -O to diff-helper.Junio C Hamano2005-06-03
| | | | | | | | | | | | | | | | | | | | | | This patch updates diff documentation and usage strings: - clarify the semantics of -R. It is not "output in reverse"; rather, it is "I will feed diff backwards". Semantically they are different when -C is involved. - describe -O in usage strings of diff-* brothers. It was implemented, documented but not described in usage text. Also it adds -O to diff-helper. Like -S (and unlike -M/-C/-B), this option can work on sanitized diff-raw output produced by the diff-* brothers. While we are at it, the call it makes to diffcore is cleaned up to use the diffcore_std() like everybody else, and the declaration for the low level diffcore routines are moved from diff.h (public) to diffcore.h (private between diff.c and diffcore backends). Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] diff: mode bits fixesJunio C Hamano2005-06-01
| | | | | | | | | | | | | | | | | | | The core GIT repository has trees that record regular file mode in 0664 instead of normalized 0644 pattern. Comparing such a tree with another tree that records the same file in 0644 pattern without content changes with git-diff-tree causes it to feed otherwise unmodified pairs to the diff_change() routine, which triggers a sanity check routine and barfs. This patch fixes the problem, along with the fix to another caller that uses unnormalized mode bits to call diff_change() routine in a similar way. Without this patch, you will see "fatal error" from diff-tree when you run git-deltafy-script on the core GIT repository itself. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Add -O<orderfile> option to diff-* brothers.Junio C Hamano2005-05-30
| | | | | | | | | | | | | | | | | | | | A new diffcore filter diffcore-order is introduced. This takes a text file each of whose line is a shell glob pattern. Patches that match a glob pattern on an earlier line in the file are output before patches that match a later line, and patches that do not match any glob pattern are output last. A typical orderfile for git project probably should look like this: README Makefile Documentation *.h *.c Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Add -B flag to diff-* brothers.Junio C Hamano2005-05-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A new diffcore transformation, diffcore-break.c, is introduced. When the -B flag is given, a patch that represents a complete rewrite is broken into a deletion followed by a creation. This makes it easier to review such a complete rewrite patch. The -B flag takes the same syntax as the -M and -C flags to specify the minimum amount of non-source material the resulting file needs to have to be considered a complete rewrite, and defaults to 99% if not specified. As the new test t4008-diff-break-rewrite.sh demonstrates, if a file is a complete rewrite, it is broken into a delete/create pair, which can further be subjected to the usual rename detection if -M or -C is used. For example, if file0 gets completely rewritten to make it as if it were rather based on file1 which itself disappeared, the following happens: The original change looks like this: file0 --> file0' (quite different from file0) file1 --> /dev/null After diffcore-break runs, it would become this: file0 --> /dev/null /dev/null --> file0' file1 --> /dev/null Then diffcore-rename matches them up: file1 --> file0' The internal score values are finer grained now. Earlier maximum of 10000 has been raised to 60000; there is no user visible changes but there is no reason to waste available bits. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] diff: consolidate various calls into diffcore.Junio C Hamano2005-05-30
| | | | | | | | | | | The three diff-* brothers had a sequence of calls into diffcore that were almost identical. Introduce a new diffcore_std() function that takes all the necessary arguments to consolidate it. This will make later enhancements and changing the order of diffcore application simpler. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Pickaxe fixes.Junio C Hamano2005-05-29
| | | | | | | | | | | | | A bug in the command line argument parsing code was making pickaxe not to work at all in diff-cache and diff-files commands. Embarrassingly enough, the working pickaxe in diff-tree tells me that it was not working in these two commands from day one. This patch fixes it. Also updates the documentation to describe the --pickaxe-all option. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Move pathspec to the beginning of the diffcore chain.Junio C Hamano2005-05-29
| | | | | | | | | | | | | | | | | This changes the way how pathspec is used in the three diff-* brothers. Earlier, they tried to grab as much information from the original input and used pathspec to limit the output. This version uses pathspec upfront to narrow the world diffcore operates in, so "git-diff-* <arguments> some-directory" does not look at things outside the specified subtree when finding rename/copy or running pickaxe. Since diff-tree already takes this view and does not feed anything outside the specified directotires to begin with, this patch does not have to touch that command. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Add --pickaxe-all to diff-* brothers.Junio C Hamano2005-05-29
| | | | | | | | | | When --pickaxe-all is given in addition to -S, pickaxe shows the entire diffs contained in the changeset, not just the diffs for the filepair that touched the sought-after string. This is useful to see the changes in context. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Clean up diff_setup() to make it more extensible.Junio C Hamano2005-05-29
| | | | | | | | | This changes the argument of diff_setup() from an integer that says if we are feeding reversed diff to a bitmask, so that later global options can be added more easily. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Fix diff-pruning logic which was running prune too early.Junio C Hamano2005-05-23
| | | | | | | | | | | | | For later stages to reorder patches, pruning logic and rename detection logic should not decide which delete to discard (because another entry said it will take over the file as a rename) until the very end. Also fix some tests that were assuming the earlier "last one is rename or keep everything else is copy" semantics of diff-raw format, which no longer is true. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] diff-raw format update take #2.Junio C Hamano2005-05-23
| | | | | | | | | | | This changes the diff-raw format again, following the mailing list discussion. The new format explicitly expresses which one is a rename and which one is a copy. The documentation and tests are updated to match this change. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Diffcore updates.Junio C Hamano2005-05-22
| | | | | | | | | | | | | | This moves the path selection logic from individual programs to a new diffcore transformer (diff-tree still needs to have its own for performance reasons). Also the header printing code in diff-tree was tweaked not to produce anything when pickaxe is in effect and there is nothing interesting to report. An interesting example is the following in the GIT archive itself: $ git-whatchanged -p -C -S'or something in a real script' Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] The diff-raw format updates.Junio C Hamano2005-05-21
| | | | | | | | | | | | | | | | | Update the diff-raw format as Linus and I discussed, except that it does not use sequence of underscore '_' letters to express nonexistence. All '0' mode is used for that purpose instead. The new diff-raw format can express rename/copy, and the earlier restriction that -M and -C _must_ be used with the patch format output is no longer necessary. The patch makes -M and -C flags independent of -p flag, so you need to say git-whatchanged -M -p to get the diff/patch format. Updated are both documentations and tests. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Prepare diffcore interface for diff-tree header supression.Junio C Hamano2005-05-21
| | | | | | | | This does not actually supress the extra headers when pickaxe is used, but prepares enough support for diff-tree to implement it. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Constness fix for pickaxe option.Junio C Hamano2005-05-21
| | | | | | Constness fix for pickaxe option. Signed-off-by: Junio C Hamano <junkio@cox.net>
* [PATCH] Diff overhaul, adding the other half of copy detection.Junio C Hamano2005-05-21
| | | | | | | | | | | This patch extends diff-cache and diff-files to report the unmodified files to diff-core as well when -C (copy detection) is in effect, so that the unmodified files can also be used as the source candidates. The existing test t4003 has been extended to cover this case. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Introducing software archaeologist's tool "pickaxe".Junio C Hamano2005-05-21
| | | | | | | | | | | | | | | | | | | | | | | | | | This steals the "pickaxe" feature from JIT and make it available to the bare Plumbing layer. From the command line, the user gives a string he is intersted in. Using the diff-core infrastructure previously introduced, it filters the differences to limit the output only to the diffs between <src> and <dst> where the string appears only in one but not in the other. For example: $ ./git-rev-list HEAD | ./git-diff-tree -Sdiff-tree-helper --stdin -M would show the diffs that touch the string "diff-tree-helper". In real software-archaeologist application, you would typically look for a few to several lines of code and see where that code came from. The "pickaxe" module runs after "rename/copy detection" module, so it even crosses the file rename boundary, as the above example demonstrates. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Diff overhaul, adding half of copy detection.Junio C Hamano2005-05-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This introduces the diff-core, the layer between the diff-tree family and the external diff interface engine. The calls to the interface diff-tree family uses (diff_change and diff_addremove) have not changed and will not change. The purpose of the diff-core layer is to provide an infrastructure to transform the set of differences sent from the applications, before sending them to the external diff interface. The recently introduced rename detection code has been rewritten to use the diff-core facility. When applications send in separate creates and deletes, matching ones are transformed into a single rename-and-edit diff, and sent out to the external diff interface as such. This patch also enhances the rename detection code further to be able to detect copies. Currently this happens only as long as copy sources appear as part of the modified files, but there already is enough provision for callers to report unmodified files to diff-core, so that they can be also used as copy source candidates. Extending the callers this way will be done in a separate patch. Please see and marvel at how well this works by trying out the newly added t/t4003-diff-rename-1.sh test script. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* sparse cleanupLinus Torvalds2005-05-20
| | | | | | | | | Fix various things that sparse complains about: - use NULL instead of 0 - make sure we declare everything properly, or mark it static - use proper function declarations ("fn(void)" instead of "fn()") Sparse is always right.
* [PATCH] Diff-files fix with more tests.Junio C Hamano2005-05-20
| | | | | | | | | | The same check we added earlier to update-cache to catch ENOTDIR turns out to be missing from diff-files. This causes a difference not being reported when you have DF/DF (a file in a subdirectory) in the cache and DF is a file on the filesystem. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] diff overhaulJunio C Hamano2005-05-19
| | | | | | | | | | | | | | | | | | | | | | | | This cleans up the way calls are made into the diff core from diff-tree family and diff-helper. Earlier, these programs had "if (generating_patch)" sprinkled all over the place, but those ugliness are gone and handled uniformly from the diff core, even when not generating patch format. This also allowed diff-cache and diff-files to acquire -R (reverse) option to generate diff in reverse. Users of diff-tree can swap two trees easily so I did not add -R there. [ Linus' note: I'll add -R to "diff-tree" too, since a "commit diff" doesn't have another tree to switch around: the other tree is always the parent(s) of the commit ] Also -M<digits-as-mantissa> suggestion made by Linus has been implemented. Documentation updates are also included. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] cleanup of in-code namesAlexey Nezhdanov2005-05-19
| | | | | | | Fixes all in-code names that leaved during "big name change". Signed-off-by: Alexey Nezhdanov <snake@penza-gsm.ru> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Detect renames in diff family.Junio C Hamano2005-05-19
| | | | | | | | | | | | | | | | | | | | | This rips out the rename detection engine from diff-helper and moves it to the diff core, and updates the internal calling convention used by diff-tree family into the diff core. In order to give the same option name to diff-tree family as well as to diff-helper, I've changed the earlier diff-helper '-r' option to '-M' (stands for Move; sorry but the natural abbreviation 'r' for 'rename' is already taken for 'recursive'). Although I did a fair amount of test with the git-diff-tree with existing rename commits in the core GIT repository, this should still be considered beta (preview) release. This patch depends on the diff-delta infrastructure just committed. This implements almost everything I wanted to see in this series of patch, except a few minor cleanups in the calling convention into diff core, but that will be a separate cleanup patch. Signed-off-by: Junio C Hamano <junkio@cox.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] Kill a bunch of pointer sign warnings for gcc4Brian Gerst2005-05-18
| | | | | | | | | - Raw hashes should be unsigned char. - String functions want signed char. - Hash and compress functions want unsigned char. Signed-off By: Brian Gerst <bgerst@didntduck.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Rename cache_match_stat() to ce_match_stat()Brad Roberts2005-05-15
| | | | | Signed-off-by: Brad Roberts <braddr@puremagic.com> Signed-off-by: Petr Baudis <pasky@ucw.cz>
* [PATCH] Fix git-diff-files for symlinks.Junio C Hamano2005-05-14
| | | | | | | | | | | | Again I am not sure why this was missed during the last round, but git-diff-files mishandles symlinks on the filesystem. This patch fixes it. Signed-off-by: Junio C Hamano <junkio@cox.net> And I'm not sure why did I miss this patch before. Sorry. Signed-off-by: Petr Baudis <pasky@ucw.cz>
* [PATCH] fix compare symlink against readlink not dataKay Sievers2005-05-06
| | | | | | | | | | | | Fix update-cache to compare the blob of a symlink against the link-target and not the file it points to. Also ignore all permissions applied to links. Thanks to Greg for recognizing this while he added our list of symlinks back to the udev repository. Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] fix usage string for renamed git commandsNicolas Pitre2005-04-30
| | | | | Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Rename git core commands to be "git-xxxx" to avoid name clashes.Linus Torvalds2005-04-29
This also regularizes the make. The source files themselves don't get the "git-" prefix, because that's just inconvenient. So instead we just make the rule that "git-xxxx" depends on "xxxx.c", and do that for all the core programs (ie the old "git-mktag.c" got renamed to just "mktag.c" to match everything else). And "show-diff" got renamed to "git-diff-files" while at it, since that's what it really should be to match the other git-diff-xxx cases.