mirror/ git
1
0
Fork 0
mirror of https://github.com/git/git.git synced 2024-06-02 14:06:12 +02:00
Code
git/dir.h

97 lines
2.4 KiB
C
Raw Normal View History

libify git-ls-files directory traversal This moves the core directory traversal and filename exclusion logic into the general git library, making it available for other users directly. If we ever want to do "git commit" or "git add" as a built-in (and we do), we want to be able to handle most of git-ls-files as a library. NOTE! Not all of git-ls-files is libified by this. The index matching and pathspec prefix calculation is still in ls-files.c, but this is a big part of it. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-17 04:02:14 +02:00
#ifndef DIR_H
#define DIR_H
struct dir_entry {
builtin-add: simplify (and increase accuracy of) exclude handling Previously, the code would always set up the excludes, and then manually pick through the pathspec we were given, assuming that non-added but existing paths were just ignored. This was mostly correct, but would erroneously mark a totally empty directory as 'ignored'. Instead, we now use the collect_ignored option of dir_struct, which unambiguously tells us whether a path was ignored. This simplifies the code, and means empty directories are now just not mentioned at all. Furthermore, we now conditionally ask dir_struct to respect excludes, depending on whether the '-f' flag has been set. This means we don't have to pick through the result, checking for an 'ignored' flag; ignored entries were either added or not in the first place. We can safely get rid of the special 'ignored' flags to dir_entry, which were not used anywhere else. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Jonas Fonseca <fonseca@diku.dk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-06-12 23:42:14 +02:00
unsigned int len;
libify git-ls-files directory traversal This moves the core directory traversal and filename exclusion logic into the general git library, making it available for other users directly. If we ever want to do "git commit" or "git add" as a built-in (and we do), we want to be able to handle most of git-ls-files as a library. NOTE! Not all of git-ls-files is libified by this. The index matching and pathspec prefix calculation is still in ls-files.c, but this is a big part of it. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-17 04:02:14 +02:00
char name[FLEX_ARRAY]; /* more */
};
Speedup scanning for excluded files. Try to avoid a lot of work scanning for excluded files, by caching some more information when setting up the exclusion data structure. Speeds up 'git runstatus' on a repository containing the Qt sources by 30% and reduces the amount of instructions executed (as measured by valgrind) by a factor of 2. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-10-28 21:27:13 +01:00
#define EXC_FLAG_NODIR 1
#define EXC_FLAG_NOWILDCARD 2
#define EXC_FLAG_ENDSWITH 4
gitignore(5): Allow "foo/" in ignore list to match directory "foo" A pattern "foo/" in the exclude list did not match directory "foo", but a pattern "foo" did. This attempts to extend the exclude mechanism so that it would while not matching a regular file or a symbolic link "foo". In order to differentiate a directory and non directory, this passes down the type of path being checked to excluded() function. A downside is that the recursive directory walk may need to run lstat(2) more often on systems whose "struct dirent" do not give the type of the entry; earlier it did not have to do so for an excluded path, but we now need to figure out if a path is a directory before deciding to exclude it. This is especially bad because an idea similar to the earlier CE_UPTODATE optimization to reduce number of lstat(2) calls would by definition not apply to the codepaths involved, as (1) directories will not be registered in the index, and (2) excluded paths will not be in the index anyway. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-01-31 10:17:48 +01:00
#define EXC_FLAG_MUSTBEDIR 8
Speedup scanning for excluded files. Try to avoid a lot of work scanning for excluded files, by caching some more information when setting up the exclusion data structure. Speeds up 'git runstatus' on a repository containing the Qt sources by 30% and reduces the amount of instructions executed (as measured by valgrind) by a factor of 2. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-10-28 21:27:13 +01:00
libify git-ls-files directory traversal This moves the core directory traversal and filename exclusion logic into the general git library, making it available for other users directly. If we ever want to do "git commit" or "git add" as a built-in (and we do), we want to be able to handle most of git-ls-files as a library. NOTE! Not all of git-ls-files is libified by this. The index matching and pathspec prefix calculation is still in ls-files.c, but this is a big part of it. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-17 04:02:14 +02:00
struct exclude_list {
int nr;
int alloc;
struct exclude {
const char *pattern;
Speedup scanning for excluded files. Try to avoid a lot of work scanning for excluded files, by caching some more information when setting up the exclusion data structure. Speeds up 'git runstatus' on a repository containing the Qt sources by 30% and reduces the amount of instructions executed (as measured by valgrind) by a factor of 2. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-10-28 21:27:13 +01:00
int patternlen;
libify git-ls-files directory traversal This moves the core directory traversal and filename exclusion logic into the general git library, making it available for other users directly. If we ever want to do "git commit" or "git add" as a built-in (and we do), we want to be able to handle most of git-ls-files as a library. NOTE! Not all of git-ls-files is libified by this. The index matching and pathspec prefix calculation is still in ls-files.c, but this is a big part of it. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-17 04:02:14 +02:00
const char *base;
int baselen;
Speedup scanning for excluded files. Try to avoid a lot of work scanning for excluded files, by caching some more information when setting up the exclusion data structure. Speeds up 'git runstatus' on a repository containing the Qt sources by 30% and reduces the amount of instructions executed (as measured by valgrind) by a factor of 2. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-10-28 21:27:13 +01:00
int to_exclude;
int flags;
libify git-ls-files directory traversal This moves the core directory traversal and filename exclusion logic into the general git library, making it available for other users directly. If we ever want to do "git commit" or "git add" as a built-in (and we do), we want to be able to handle most of git-ls-files as a library. NOTE! Not all of git-ls-files is libified by this. The index matching and pathspec prefix calculation is still in ls-files.c, but this is a big part of it. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-17 04:02:14 +02:00
} **excludes;
};
per-directory-exclude: lazily read .gitignore files Operations that walk directories or trees, which potentially need to consult the .gitignore files, used to always try to open the .gitignore file every time they entered a new directory, even when they ended up not needing to call excluded() function to see if a path in the directory is ignored. This was done by push/pop exclude_per_directory() functions that managed the data in a stack. This changes the directory walking API to remove the need to call these two functions. Instead, the directory walk data structure caches the data used by excluded() function the last time, and lazily reuses it as much as possible. Among the data the last check used, the ones from deeper directories that the path we are checking is outside are discarded, data from the common leading directories are reused, and then the directories between the common directory and the directory the path being checked is in are checked for .gitignore file. This is very similar to the way gitattributes are handled. This API change also fixes "ls-files -c -i", which called excluded() without setting up the gitignore data via the old push/pop functions. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-29 11:17:44 +01:00
struct exclude_stack {
struct exclude_stack *prev;
char *filebuf;
int baselen;
int exclude_ix;
};
libify git-ls-files directory traversal This moves the core directory traversal and filename exclusion logic into the general git library, making it available for other users directly. If we ever want to do "git commit" or "git add" as a built-in (and we do), we want to be able to handle most of git-ls-files as a library. NOTE! Not all of git-ls-files is libified by this. The index matching and pathspec prefix calculation is still in ls-files.c, but this is a big part of it. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-17 04:02:14 +02:00
struct dir_struct {
int nr, alloc;
dir_struct: add collect_ignored option When set, this option will cause read_directory to keep track of which entries were ignored. While this shouldn't effect functionality in most cases, it can make warning messages to the user much more useful. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-06-11 15:39:50 +02:00
int ignored_nr, ignored_alloc;
Turn the flags in struct dir_struct into a single variable By having flags represented as bits in the new member variable 'flags', it will be easier to use parse_options when dir_struct is involved. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-16 13:20:25 +01:00
enum {
DIR_SHOW_IGNORED = 1<<0,
DIR_SHOW_OTHER_DIRECTORIES = 1<<1,
DIR_HIDE_EMPTY_DIRECTORIES = 1<<2,
DIR_NO_GITLINKS = 1<<3,
DIR_COLLECT_IGNORED = 1<<4
} flags;
libify git-ls-files directory traversal This moves the core directory traversal and filename exclusion logic into the general git library, making it available for other users directly. If we ever want to do "git commit" or "git add" as a built-in (and we do), we want to be able to handle most of git-ls-files as a library. NOTE! Not all of git-ls-files is libified by this. The index matching and pathspec prefix calculation is still in ls-files.c, but this is a big part of it. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-17 04:02:14 +02:00
struct dir_entry **entries;
dir_struct: add collect_ignored option When set, this option will cause read_directory to keep track of which entries were ignored. While this shouldn't effect functionality in most cases, it can make warning messages to the user much more useful. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-06-11 15:39:50 +02:00
struct dir_entry **ignored;
libify git-ls-files directory traversal This moves the core directory traversal and filename exclusion logic into the general git library, making it available for other users directly. If we ever want to do "git commit" or "git add" as a built-in (and we do), we want to be able to handle most of git-ls-files as a library. NOTE! Not all of git-ls-files is libified by this. The index matching and pathspec prefix calculation is still in ls-files.c, but this is a big part of it. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-17 04:02:14 +02:00
/* Exclude info */
const char *exclude_per_dir;
struct exclude_list exclude_list[3];
per-directory-exclude: lazily read .gitignore files Operations that walk directories or trees, which potentially need to consult the .gitignore files, used to always try to open the .gitignore file every time they entered a new directory, even when they ended up not needing to call excluded() function to see if a path in the directory is ignored. This was done by push/pop exclude_per_directory() functions that managed the data in a stack. This changes the directory walking API to remove the need to call these two functions. Instead, the directory walk data structure caches the data used by excluded() function the last time, and lazily reuses it as much as possible. Among the data the last check used, the ones from deeper directories that the path we are checking is outside are discarded, data from the common leading directories are reused, and then the directories between the common directory and the directory the path being checked is in are checked for .gitignore file. This is very similar to the way gitattributes are handled. This API change also fixes "ls-files -c -i", which called excluded() without setting up the gitignore data via the old push/pop functions. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-29 11:17:44 +01:00
/*
* We maintain three exclude pattern lists:
* EXC_CMDL lists patterns explicitly given on the command line.
* EXC_DIRS lists patterns obtained from per-directory ignore files.
* EXC_FILE lists patterns from fallback ignore files.
*/
#define EXC_CMDL 0
#define EXC_DIRS 1
#define EXC_FILE 2
struct exclude_stack *exclude_stack;
char basebuf[PATH_MAX];
libify git-ls-files directory traversal This moves the core directory traversal and filename exclusion logic into the general git library, making it available for other users directly. If we ever want to do "git commit" or "git add" as a built-in (and we do), we want to be able to handle most of git-ls-files as a library. NOTE! Not all of git-ls-files is libified by this. The index matching and pathspec prefix calculation is still in ls-files.c, but this is a big part of it. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-17 04:02:14 +02:00
};
match_pathspec() -- return how well the spec matched This updates the return value from match_pathspec() so that the caller can tell cases between exact match, leading pathname match (i.e. file "foo/bar" matches a pathspec "foo"), or filename glob match. This can be used to prevent "rm dir" from removing "dir/file" without explicitly asking for recursive behaviour with -r flag, for example. Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-25 12:09:52 +01:00
#define MATCHED_RECURSIVELY 1
#define MATCHED_FNMATCH 2
#define MATCHED_EXACTLY 3
Move pathspec matching from builtin-add.c into dir.c I'll use it for builtin-rm.c too. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-20 01:07:51 +02:00
extern int match_pathspec(const char **pathspec, const char *name, int namelen, int prefix, char *seen);
Add 'fill_directory()' helper function for directory traversal Most of the users of "read_directory()" actually want a much simpler interface than the whole complex (but rather powerful) one. In fact 'git add' had already largely abstracted out the core interface issues into a private "fill_directory()" function that was largely applicable almost as-is to a number of callers. Yes, 'git add' wants to do some extra work of its own, specific to the add semantics, but we can easily split that out, and use the core as a generic function. This function does exactly that, and now that much simplified 'fill_directory()' function can be shared with a number of callers, while also ensuring that the rather more complex calling conventions of read_directory() are used by fewer call-sites. This also makes the 'common_prefix()' helper function private to dir.c, since all callers are now in that file. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-05-14 22:22:36 +02:00
extern int fill_directory(struct dir_struct *dir, const char **pathspec);
Simplify read_directory[_recursive]() arguments Stop the insanity with separate 'path' and 'base' arguments that must match. We don't need that crazy interface any more, since we cleaned up handling of 'path' in commit da4b3e8c28b1dc2b856d2555ac7bb47ab712598c. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-07-09 04:24:39 +02:00
extern int read_directory(struct dir_struct *, const char *path, int len, const char **pathspec);
read-tree: further loosen "working file will be lost" check. This follows up commit ed93b449 where we removed overcautious "working file will be lost" check. A new option "--exclude-per-directory=.gitignore" can be used to tell the "git-read-tree" command that the user does not mind losing contents in untracked files in the working tree, if they need to be overwritten by a merge (either a two-way "switch branches" merge, or a three-way merge). Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-12-05 01:00:46 +01:00
gitignore: lazily find dtype When we process "foo/" entries in gitignore files on a system that does not have d_type member in "struct dirent", the earlier implementation ran lstat(2) separately when matching with entries that came from the command line, in-tree .gitignore files, and $GIT_DIR/info/excludes file. This optimizes it by delaying the lstat(2) call until it becomes absolutely necessary. The initial idea for this change was by Jeff King, but I optimized it further to pass pointers to around. Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-01 05:23:25 +01:00
extern int excluded(struct dir_struct *, const char *, int *);
libify git-ls-files directory traversal This moves the core directory traversal and filename exclusion logic into the general git library, making it available for other users directly. If we ever want to do "git commit" or "git add" as a built-in (and we do), we want to be able to handle most of git-ls-files as a library. NOTE! Not all of git-ls-files is libified by this. The index matching and pathspec prefix calculation is still in ls-files.c, but this is a big part of it. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-17 04:02:14 +02:00
extern void add_excludes_from_file(struct dir_struct *, const char *fname);
extern void add_exclude(const char *string, const char *base,
int baselen, struct exclude_list *which);
git-commit.sh: convert run_status to a C builtin This creates a new git-runstatus which should do roughly the same thing as the run_status function from git-commit.sh. Except for color support, the main focus has been to keep the output identical, so that it can be verified as correct and then used as a C platform for other improvements to the status printing code. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-09-08 10:05:34 +02:00
extern int file_exists(const char *);
libify git-ls-files directory traversal This moves the core directory traversal and filename exclusion logic into the general git library, making it available for other users directly. If we ever want to do "git commit" or "git add" as a built-in (and we do), we want to be able to handle most of git-ls-files as a library. NOTE! Not all of git-ls-files is libified by this. The index matching and pathspec prefix calculation is still in ls-files.c, but this is a big part of it. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-17 04:02:14 +02:00
Add functions get_relative_cwd() and is_inside_dir() The function get_relative_cwd() works just as getcwd(), only that it takes an absolute path as additional parameter, returning the prefix of the current working directory relative to the given path. If the cwd is no subdirectory of the given path, it returns NULL. is_inside_dir() is just a trivial wrapper over get_relative_cwd(). Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-08-01 02:29:17 +02:00
extern char *get_relative_cwd(char *buffer, int size, const char *dir);
extern int is_inside_dir(const char *dir);
add is_dot_or_dotdot inline function A new inline function is_dot_or_dotdot is used to check if the directory name is either "." or "..". It returns a non-zero value if the given string is "." or "..". It's applicable to a lot of Git source code. Signed-off-by: Alexander Potashev <aspotashev@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-10 13:07:50 +01:00
static inline int is_dot_or_dotdot(const char *name)
{
return (name[0] == '.' &&
(name[1] == '\0' ||
(name[1] == '.' && name[2] == '\0')));
}
Allow cloning to an existing empty directory The die() message updated accordingly. The previous behaviour was to only allow cloning when the destination directory doesn't exist. [jc: added trivial tests] Signed-off-by: Alexander Potashev <aspotashev@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-01-11 13:19:12 +01:00
extern int is_empty_dir(const char *dir);
core.excludesfile clean-up There are inconsistencies in the way commands currently handle the core.excludesfile configuration variable. The problem is the variable is too new to be noticed by anything other than git-add and git-status. * git-ls-files does not notice any of the "ignore" files by default, as it predates the standardized set of ignore files. The calling scripts established the convention to use .git/info/exclude, .gitignore, and later core.excludesfile. * git-add and git-status know about it because they call add_excludes_from_file() directly with their own notion of which standard set of ignore files to use. This is just a stupid duplication of code that need to be updated every time the definition of the standard set of ignore files is changed. * git-read-tree takes --exclude-per-directory=<gitignore>, not because the flexibility was needed. Again, this was because the option predates the standardization of the ignore files. * git-merge-recursive uses hardcoded per-directory .gitignore and nothing else. git-clean (scripted version) does not honor core.* because its call to underlying ls-files does not know about it. git-clean in C (parked in 'pu') doesn't either. We probably could change git-ls-files to use the standard set when no excludes are specified on the command line and ignore processing was asked, or something like that, but that will be a change in semantics and might break people's scripts in a subtle way. I am somewhat reluctant to make such a change. On the other hand, I think it makes perfect sense to fix git-read-tree, git-merge-recursive and git-clean to follow the same rule as other commands. I do not think of a valid use case to give an exclude-per-directory that is nonstandard to read-tree command, outside a "negative" test in the t1004 test script. This patch is the first step to untangle this mess. The next step would be to teach read-tree, merge-recursive and clean (in C) to use setup_standard_excludes(). Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-11-14 09:05:00 +01:00
extern void setup_standard_excludes(struct dir_struct *dir);
Introduce remove_dir_recursively() There was a function called remove_empty_dir_recursive() buried in refs.c. Expose a slightly enhanced version in dir.h: it can now optionally remove a non-empty directory. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-09-28 17:28:54 +02:00
extern int remove_dir_recursively(struct strbuf *path, int only_empty);
Add remove_path: a function to remove as much as possible of a path The function has two potential users which both managed to get wrong their implementations (the one in builtin-rm.c one has a memleak, and builtin-merge-recursive.c scribles over its const argument). Signed-off-by: Alex Riesen <raa.lkml@gmail.com> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2008-09-27 00:56:46 +02:00
/* tries to remove the path with empty directories along it, ignores ENOENT */
extern int remove_path(const char *path);
libify git-ls-files directory traversal This moves the core directory traversal and filename exclusion logic into the general git library, making it available for other users directly. If we ever want to do "git commit" or "git add" as a built-in (and we do), we want to be able to handle most of git-ls-files as a library. NOTE! Not all of git-ls-files is libified by this. The index matching and pathspec prefix calculation is still in ls-files.c, but this is a big part of it. Signed-off-by: Linus Torvalds <torvalds@osdl.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
2006-05-17 04:02:14 +02:00
#endif