kernel/git - git - PowerEL Git System

Author	SHA1	Message	Date
Alex Riesen	4629795816	Fix crash in t0020 (crlf conversion) Reallocated wrong size. Noticed on Ubuntu 7.04 probably because it has some malloc diagnostics in libc: "git-read-tree --reset -u HEAD" aborted in the test. Valgrind sped up the debugging greatly: took me 10 minutes. Signed-off-by: Alex Riesen <raa.lkml@gmail.com> Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Junio C Hamano	a5e92abde6	Fix funny types used in attribute value representation It was bothering me a lot that I abused small integer values casted to (void ) to represent non string values in gitattributes. This corrects it by making the type of attribute values (const char ), and using the address of a few statically allocated character buffer to denote true/false. Unset attributes are represented as having NULLs as their values. Added in-header documentation to explain how git_checkattr() routine should be called. Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Junio C Hamano	515106fa13	Allow more than true/false to attributes. This allows you to define three values (and possibly more) to each attribute: true, false, and unset. Typically the handlers that notice and act on attribute values treat "unset" attribute to mean "do your default thing" (e.g. crlf that is unset would trigger "guess from contents"), so being able to override a setting to an unset state is actually useful. - If you want to set the attribute value to true, have an entry in .gitattributes file that mentions the attribute name; e.g. .o binary - If you want to set the attribute value explicitly to false, use '-'; e.g. .a -diff - If you want to make the attribute value _unset_, perhaps to override an earlier entry, use '!'; e.g. *.a -diff c.i.a !diff This also allows string values to attributes, with the natural syntax: attrname=attrvalue but you cannot use it, as nobody takes notice and acts on it yet. Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Junio C Hamano	e4aee10a2e	Change attribute negation marker from '!' to '-'. At the same time, we do not want to allow arbitrary strings for attribute names, as we are likely to want to extend the syntax later. Allow only alnum, dash, underscore and dot for now. Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Junio C Hamano	fc2d07b05f	Define a built-in attribute macro "binary". For binary files we would want to disable textual diff generation and automatic crlf conversion. Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Junio C Hamano	f48fd68887	attribute macro support This adds "attribute macros" (for lack of better name). So far, we have low-level attributes such as crlf and diff, which are defined in operational terms --- setting or unsetting them on a particular path directly affects what is done to the path. For example, in order to decline diffs or crlf conversions on a binary blob, no diffs on PostScript files, and treat all other files normally, you would have something like these: * diff crlf .ps !diff proprietary.o !diff !crlf That is fine as the operation goes, but gets unwieldy rather rapidly, when we start adding more low-level attributes that are defined in operational terms. A near-term example of such an attribute would be 'merge-3way' which would control if git should attempt the usual 3-way file-level merge internally, or leave merging to a specialized external program of user's choice. When it is added, we do _not_ want to force the users to update the above to: diff crlf merge-3way .ps !diff proprietary.o !diff !crlf !merge-3way The way this patch solves this issue is to realize that the attributes the user is assigning to paths are not defined in terms of operations but in terms of what they are. All of the three low-level attributes usually make sense for most of the files that sane SCM users have git operate on (these files are typically called "text'). Only a few cases, such as binary blob, need exception to decline the "usual treatment given to text files" -- and people mark them as "binary". So this allows the $GIT_DIR/info/alternates and .gitattributes at the toplevel of the project to also specify attributes that assigns other attributes. The syntax is '[attr]' followed by an attribute name followed by a list of attribute names: [attr] binary !diff !crlf !merge-3way When "binary" attribute is set to a path, if the path has not got diff/crlf/merge-3way attribute set or unset by other rules, this rule unsets the three low-level attributes. It is expected that the user level .gitattributes will be expressed mostly in terms of attributes based on what the files are, and the above sample would become like this: (built-in attribute configuration) [attr] binary !diff !crlf !merge-3way diff crlf merge-3way (project specific .gitattributes) proprietary.o binary (user preference $GIT_DIR/info/attributes) .ps !diff There are a few caveats. As described above, you can define these macros only in $GIT_DIR/info/attributes and toplevel .gitattributes. * There is no attempt to detect circular definition of macro attributes, and definitions are evaluated from bottom to top as usual to fill in other attributes that have not yet got values. The following would work as expected: [attr] text diff crlf [attr] ps text !diff .ps ps while this would most likely not (I haven't tried): [attr] ps text !diff [attr] text diff crlf .ps ps * When a macro says "[attr] A B !C", saying that a path does not have attribute A does not let you tell anything about attributes B or C. That is, given this: [attr] text diff crlf [attr] ps text !diff .txt !ps path hello.txt, which would match ".txt" pattern, would have "ps" attribute set to zero, but that does not make text attribute of hello.txt set to false (nor diff attribute set to true). Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Junio C Hamano	8c701249d2	Teach 'diff' about 'diff' attribute. This makes paths that explicitly unset 'diff' attribute not to produce "textual" diffs from 'git-diff' family. Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Junio C Hamano	35ebfd6a0c	Define 'crlf' attribute. This defines the semantics of 'crlf' attribute as an example. When a path has this attribute unset (i.e. '!crlf'), autocrlf line-end conversion is not applied. Eventually we would want to let users to build a pipeline of processing to munge blob data to filesystem format (and in the other direction) based on combination of attributes, and at that point the mechanism in convert_to_{git,working_tree}() that looks at 'crlf' attribute needs to be enhanced. Perhaps the existing 'crlf' would become the first step in the input chain, and the last step in the output chain. Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago
Junio C Hamano	d0bfd026a8	Add basic infrastructure to assign attributes to paths This adds the basic infrastructure to assign attributes to paths, in a way similar to what the exclusion mechanism does based on $GIT_DIR/info/exclude and .gitignore files. An attribute is just a simple string that does not contain any whitespace. They can be specified in $GIT_DIR/info/attributes file, and .gitattributes file in each directory. Each line in these files defines a pattern matching rule. Similar to the exclusion mechanism, a later match overrides an earlier match in the same file, and entries from .gitattributes file in the same directory takes precedence over the ones from parent directories. Lines in $GIT_DIR/info/attributes file are used as the lowest precedence default rules. A line is either a comment (an empty line, or a line that begins with a '#'), or a rule, which is a whitespace separated list of tokens. The first token on the line is a shell glob pattern. The rest are names of attributes, each of which can optionally be prefixed with '!'. Such a line means "if a path matches this glob, this attribute is set (or unset -- if the attribute name is prefixed with '!'). For glob matching, the same "if the pattern does not have a slash in it, the basename of the path is matched with fnmatch(3) against the pattern, otherwise, the path is matched with the pattern with FNM_PATHNAME" rule as the exclusion mechanism is used. This does not define what an attribute means. Tying an attribute to various effects it has on git operation for paths that have it will be specified separately. Signed-off-by: Junio C Hamano <junkio@cox.net>	18 years ago