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2006-02-08"Assume unchanged" gitLibravatar Junio C Hamano1-0/+5
This adds "assume unchanged" logic, started by this message in the list discussion recently: <Pine.LNX.4.64.0601311807470.7301@g5.osdl.org> This is a workaround for filesystems that do not have lstat() that is quick enough for the index mechanism to take advantage of. On the paths marked as "assumed to be unchanged", the user needs to explicitly use update-index to register the object name to be in the next commit. You can use two new options to update-index to set and reset the CE_VALID bit: git-update-index --assume-unchanged path... git-update-index --no-assume-unchanged path... These forms manipulate only the CE_VALID bit; it does not change the object name recorded in the index file. Nor they add a new entry to the index. When the configuration variable "core.ignorestat = true" is set, the index entries are marked with CE_VALID bit automatically after: - update-index to explicitly register the current object name to the index file. - when update-index --refresh finds the path to be up-to-date. - when tools like read-tree -u and apply --index update the working tree file and register the current object name to the index file. The flag is dropped upon read-tree that does not check out the index entry. This happens regardless of the core.ignorestat settings. Index entries marked with CE_VALID bit are assumed to be unchanged most of the time. However, there are cases that CE_VALID bit is ignored for the sake of safety and usability: - while "git-read-tree -m" or git-apply need to make sure that the paths involved in the merge do not have local modifications. This sacrifices performance for safety. - when git-checkout-index -f -q -u -a tries to see if it needs to checkout the paths. Otherwise you can never check anything out ;-). - when git-update-index --really-refresh (a new flag) tries to see if the index entry is up to date. You can start with everything marked as CE_VALID and run this once to drop CE_VALID bit for paths that are modified. Most notably, "update-index --refresh" honours CE_VALID and does not actively stat, so after you modified a file in the working tree, update-index --refresh would not notice until you tell the index about it with "git-update-index path" or "git-update-index --no-assume-unchanged path". This version is not expected to be perfect. I think diff between index and/or tree and working files may need some adjustment, and there probably needs other cases we should automatically unmark paths that are marked to be CE_VALID. But the basics seem to work, and ready to be tested by people who asked for this feature. Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-01-05use result of open(2) to check for presenceLibravatar Alex Riesen1-5/+12
Not that the stat against open race would matter much in this context, but that simplifies the code a bit. Also some diagnostics added (why the open failed) Signed-off-by: Alex Riesen <raa.lkml@gmail.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-12-21\n usage in stderr outputLibravatar Alex Riesen1-1/+1
fprintf and die sometimes have missing/excessive "\n" in their arguments, correct the strings where I think it would be appropriate. Signed-off-by: Alex Riesen <raa.lkml@gmail.com> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-12-05config.c: remove unnecessary header in minimum configuration file.Libravatar Junio C Hamano1-8/+0
It is just silly to start the file called "config" with a comment that says "This is the config file." Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-28config.c: constness tightening to avoid compilation warning.Libravatar Junio C Hamano1-1/+1
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-27Introduce i18n.commitencoding.Libravatar Junio C Hamano1-0/+5
This is to hold what the project-local rule as to the charset/encoding for the commit log message is. Lack of it defaults to utf-8. Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-27init-db: check template and repository format.Libravatar Junio C Hamano1-4/+12
This makes init-db repository version aware. It checks if an existing config file says the repository being reinitialized is of a wrong version and aborts before doing further harm. When copying the templates, it makes sure the they are of the right repository format version. Otherwise the templates are ignored with an warning message. It copies the templates before creating the HEAD, and if the config file is copied from the template directory, reads it, primarily to pick up the value of core.symrefsonly. It changes the way the result of the filemode reliability test is written to the configuration file using git_config_set(). The test is done even if the config file was copied from the templates. And finally, our own repository format version is written to the config file. Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-25config.c: avoid shadowing global.Libravatar Junio C Hamano1-5/+5
This is purely cosmetic, but avoid shadowing "FILE *config_file" global in git_config_set_multivar() function. Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-21Move diff.renamelimit out of default configuration.Libravatar Junio C Hamano1-5/+0
Otherwise we would end up linking all the unneeded stuff into git-daemon only to link with git_default_config. Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-21Allow hierarchical section namesLibravatar Johannes Schindelin1-9/+10
A .git/config like follows becomes valid with this patch: [remote.junio] url = git://git.kernel.org/pub/scm/git/git.git pull = master:junio todo:todo +pu:pu [remote.ibook] url = ibook:git/ pull = master:ibook push = master:quetzal (This patch only does the ini file thing, git-fetch and friends still ignore these values). Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-21git-config-set: Properly terminate strings with '\0'Libravatar Johannes Schindelin1-0/+1
When a lowercase version of the key was generated, it was not terminated. Strangely enough, it worked on Linux and macosx anyway. Just cygwin barfed. Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-20git-config-set: support selecting values by non-matching regexLibravatar Johannes Schindelin1-6/+17
Extend the regex syntax of value_regex so that prepending an exclamation mark means non-match: [core] quetzal = "Dodo" for Brainf*ck quetzal = "T. Rex" for Malbolge quetzal = "cat" You can match the third line with git-config-set --get quetzal '! for ' Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-19git-config-set: add more optionsLibravatar Johannes Schindelin1-45/+71
... namely --replace-all, to replace any amount of matching lines, not just 0 or 1, --get, to get the value of one key, --get-all, the multivar version of --get, and --unset-all, which deletes all matching lines from .git/config Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-19Add functions git_config_set() and git_config_set_multivar()Libravatar Johannes Schindelin1-1/+293
The function git_config_set() does exactly what you think it does. Given a key (in the form "core.filemode") and a value, it sets the key to the value. Example: git_config_set("core.filemode", "true"); The function git_config_set_multivar() is meant for setting variables which can have several values for the same key. Example: [diff] twohead = resolve twohead = recarsive the typo in the second line can be replaced by git_config_set_multivar("diff.twohead", "recursive", "^recar"); The third argument of the function is a POSIX extended regex which has to match the value. If there is no key/value pair with a matching value, a new key/value pair is added. These commands are also capable of unsetting (deleting) entries: git_config_set_multivar("diff.twohead", NULL, "sol"); will delete the entry twohead = resolve Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-15diff: make default rename detection limit configurable.Libravatar Junio C Hamano1-0/+5
A while ago, a rename-detection limit logic was implemented as a response to this thread: http://marc.theaimsgroup.com/?l=git&m=112413080630175 where gitweb was found to be using a lot of time and memory to detect renames on huge commits. git-diff family takes -l<num> flag, and if the number of paths that are rename destination candidates (i.e. new paths with -M, or modified paths with -C) are larger than that number, skips rename/copy detection even when -M or -C is specified on the command line. This commit makes the rename detection limit easier to use. You can have: [diff] renamelimit = 30 in your .git/config file to specify the default rename detection limit. You can override this from the command line; giving 0 means 'unlimited': git diff -M -l0 We might want to change the default behaviour, when you do not have the configuration, to limit it to say 20 paths or so. This would also help the diffstat generation after a big 'git pull'. Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-15Add config variable core.symrefsonlyLibravatar Johannes Schindelin1-0/+5
This allows you to force git to avoid symlinks for refs. Just add something like [core] symrefsonly = true to .git/config. DonĀ“t forget to "git checkout your_branch", or it does not do anything... Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-11-02Ignore '\r' at the end of line in $GIT_DIR/configLibravatar Junio C Hamano1-0/+8
Unfortunate people may have to use $GIT_DIR/config edited on DOSsy machine on UNIXy machine. Ignore '\r' immediately followed by '\n'. Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-10-14Unlocalized isspace and friendsLibravatar Linus Torvalds1-1/+0
Do our own ctype.h, just to get the sane semantics: we want locale-independence, _and_ we want the right signed behaviour. Plus we only use a very small subset of ctype.h anyway (isspace, isalpha, isdigit and isalnum). Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-10-11Make git config variable names case-insensitiveLibravatar Linus Torvalds1-1/+1
They always were meant to be case-insensitive, but I had missed one "tolower()", making that not true. The actual _values_ aren't case-insensitive, of course, although some uses of them may be (ie boolean parsing uses "strcasecmp()" to match against the strings "true" and "false"). Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-10-11Use git config file for committer name and email infoLibravatar Linus Torvalds1-0/+10
This starts using the "user.name" and "user.email" config variables if they exist as the default name and email when committing. This means that you don't have to use the GIT_COMMITTER_EMAIL environment variable to override your email - you can just edit the config file instead. The patch looks bigger than it is because it makes the default name and email information non-static and renames it appropriately. And it moves the common git environment variables into a new library file, so that you can link against libgit.a and get the git environment without having to link in zlib and libcrypt. In short, most of it is renaming and moving, the real change core is just a few new lines in "git_default_config()" that copies the user config values to the new base. It also changes "git-var -l" to list the config variables. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-10-11Improve config file escape sanity checkingLibravatar Linus Torvalds1-1/+6
I had meant to disallow unknown escape characters in the config file parser, but instead an unknown escaped character would silently pass through as itself. That's correct for some cases (notably '\' itself), but wasn't correct in general. This fixes it, and makes the parser write a nice error message if the config file contains bogus escaped characters. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-10-10Add ".git/config" file parserLibravatar Linus Torvalds1-0/+222
This is a first cut at a very simple parser for a git config file. The format of the file is a simple ini-file like thing, with simple variable/value pairs. You can (and should) make the variables have a simple single-level scope, ie a valid file looks something like this: # # This is the config file, and # a '#' or ';' character indicates # a comment # ; core variables [core] ; Don't trust file modes filemode = false ; Our diff algorithm [diff] external = "/usr/local/bin/gnu-diff -u" renames = true which parses into three variables: "core.filemode" is associated with the string "false", and "diff.external" gets the appropriate quoted value. Right now we only react to one variable: "core.filemode" is a boolean that decides if we should care about the 0100 (user-execute) bit of the stat information. Even that is just a parsing demonstration - this doesn't actually implement that st_mode compare logic itself. Different programs can react to different config options, although they should always fall back to calling "git_default_config()" on any config option name that they don't recognize. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>