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#ifndef DIR_H
#define DIR_H
#include "cache.h"
#include "hashmap.h"
#include "strbuf.h"
/**
* The directory listing API is used to enumerate paths in the work tree,
* optionally taking `.git/info/exclude` and `.gitignore` files per directory
* into account.
*/
/**
* Calling sequence
* ----------------
*
* Note: The index may be checked for .gitignore files that are
* CE_SKIP_WORKTREE marked. If you want to exclude files, make sure you have
* loaded the index first.
*
* - Prepare `struct dir_struct dir` using `dir_init()` function.
*
* - To add single exclude pattern, call `add_pattern_list()` and then
* `add_pattern()`.
*
* - To add patterns from a file (e.g. `.git/info/exclude`), call
* `add_patterns_from_file()` , and/or set `dir.exclude_per_dir`.
*
* - A short-hand function `setup_standard_excludes()` can be used to set
* up the standard set of exclude settings, instead of manually calling
* the add_pattern*() family of functions.
*
* - Call `fill_directory()`.
*
* - Use `dir.entries[]` and `dir.ignored[]`.
*
* - Call `dir_clear()` when the contained elements are no longer in use.
*
*/
struct dir_entry {
unsigned int len;
char name[FLEX_ARRAY]; /* more */
};
#define PATTERN_FLAG_NODIR 1
#define PATTERN_FLAG_ENDSWITH 4
#define PATTERN_FLAG_MUSTBEDIR 8
#define PATTERN_FLAG_NEGATIVE 16
struct path_pattern {
/*
* This allows callers of last_matching_pattern() etc.
* to determine the origin of the matching pattern.
*/
struct pattern_list *pl;
const char *pattern;
int patternlen;
int nowildcardlen;
const char *base;
int baselen;
unsigned flags; /* PATTERN_FLAG_* */
/*
* Counting starts from 1 for line numbers in ignore files,
* and from -1 decrementing for patterns from CLI args.
*/
int srcpos;
};
/* used for hashmaps for cone patterns */
struct pattern_entry {
struct hashmap_entry ent;
char *pattern;
size_t patternlen;
};
/*
* Each excludes file will be parsed into a fresh exclude_list which
* is appended to the relevant exclude_list_group (either EXC_DIRS or
* EXC_FILE). An exclude_list within the EXC_CMDL exclude_list_group
* can also be used to represent the list of --exclude values passed
* via CLI args.
*/
struct pattern_list {
int nr;
int alloc;
/* remember pointer to exclude file contents so we can free() */
char *filebuf;
/* origin of list, e.g. path to filename, or descriptive string */
const char *src;
struct path_pattern **patterns;
/*
* While scanning the excludes, we attempt to match the patterns
* with a more restricted set that allows us to use hashsets for
* matching logic, which is faster than the linear lookup in the
* excludes array above. If non-zero, that check succeeded.
*/
unsigned use_cone_patterns;
unsigned full_cone;
/*
* Stores paths where everything starting with those paths
* is included.
*/
struct hashmap recursive_hashmap;
/*
* Used to check single-level parents of blobs.
*/
struct hashmap parent_hashmap;
};
/*
* The contents of the per-directory exclude files are lazily read on
* demand and then cached in memory, one per exclude_stack struct, in
* order to avoid opening and parsing each one every time that
* directory is traversed.
*/
struct exclude_stack {
struct exclude_stack *prev; /* the struct exclude_stack for the parent directory */
int baselen;
int exclude_ix; /* index of exclude_list within EXC_DIRS exclude_list_group */
struct untracked_cache_dir *ucd;
};
struct exclude_list_group {
int nr, alloc;
struct pattern_list *pl;
};
struct oid_stat {
struct stat_data stat;
struct object_id oid;
int valid;
};
/*
* Untracked cache
*
* The following inputs are sufficient to determine what files in a
* directory are excluded:
*
* - The list of files and directories of the directory in question
* - The $GIT_DIR/index
* - dir_struct flags
* - The content of $GIT_DIR/info/exclude
* - The content of core.excludesfile
* - The content (or the lack) of .gitignore of all parent directories
* from $GIT_WORK_TREE
* - The check_only flag in read_directory_recursive (for
* DIR_HIDE_EMPTY_DIRECTORIES)
*
* The first input can be checked using directory mtime. In many
* filesystems, directory mtime (stat_data field) is updated when its
* files or direct subdirs are added or removed.
*
* The second one can be hooked from cache_tree_invalidate_path().
* Whenever a file (or a submodule) is added or removed from a
* directory, we invalidate that directory.
*
* The remaining inputs are easy, their SHA-1 could be used to verify
* their contents (exclude_sha1[], info_exclude_sha1[] and
* excludes_file_sha1[])
*/
struct untracked_cache_dir {
struct untracked_cache_dir **dirs;
char **untracked;
struct stat_data stat_data;
unsigned int untracked_alloc, dirs_nr, dirs_alloc;
unsigned int untracked_nr;
unsigned int check_only : 1;
/* all data except 'dirs' in this struct are good */
unsigned int valid : 1;
unsigned int recurse : 1;
/* null object ID means this directory does not have .gitignore */
struct object_id exclude_oid;
char name[FLEX_ARRAY];
};
struct untracked_cache {
struct oid_stat ss_info_exclude;
struct oid_stat ss_excludes_file;
const char *exclude_per_dir;
struct strbuf ident;
/*
* dir_struct#flags must match dir_flags or the untracked
* cache is ignored.
*/
unsigned dir_flags;
struct untracked_cache_dir *root;
/* Statistics */
int dir_created;
int gitignore_invalidated;
int dir_invalidated;
int dir_opened;
/* fsmonitor invalidation data */
unsigned int use_fsmonitor : 1;
};
/**
* structure is used to pass directory traversal options to the library and to
* record the paths discovered. A single `struct dir_struct` is used regardless
* of whether or not the traversal recursively descends into subdirectories.
*/
struct dir_struct {
/* The number of members in `entries[]` array. */
int nr;
/* Internal use; keeps track of allocation of `entries[]` array.*/
int alloc;
/* The number of members in `ignored[]` array. */
int ignored_nr;
int ignored_alloc;
/* bit-field of options */
enum {
/**
* Return just ignored files in `entries[]`, not untracked files.
* This flag is mutually exclusive with `DIR_SHOW_IGNORED_TOO`.
*/
DIR_SHOW_IGNORED = 1<<0,
/* Include a directory that is not tracked. */
DIR_SHOW_OTHER_DIRECTORIES = 1<<1,
/* Do not include a directory that is not tracked and is empty. */
DIR_HIDE_EMPTY_DIRECTORIES = 1<<2,
/**
* If set, recurse into a directory that looks like a Git directory.
* Otherwise it is shown as a directory.
*/
DIR_NO_GITLINKS = 1<<3,
/**
* Special mode for git-add. Return ignored files in `ignored[]` and
* untracked files in `entries[]`. Only returns ignored files that match
* pathspec exactly (no wildcards). Does not recurse into ignored
* directories.
*/
DIR_COLLECT_IGNORED = 1<<4,
/**
* Similar to `DIR_SHOW_IGNORED`, but return ignored files in
* `ignored[]` in addition to untracked files in `entries[]`.
* This flag is mutually exclusive with `DIR_SHOW_IGNORED`.
*/
DIR_SHOW_IGNORED_TOO = 1<<5,
DIR_COLLECT_KILLED_ONLY = 1<<6,
/**
* Only has meaning if `DIR_SHOW_IGNORED_TOO` is also set; if this is
* set, the untracked contents of untracked directories are also
* returned in `entries[]`.
*/
DIR_KEEP_UNTRACKED_CONTENTS = 1<<7,
/**
* Only has meaning if `DIR_SHOW_IGNORED_TOO` is also set; if this is
* set, returns ignored files and directories that match an exclude
* pattern. If a directory matches an exclude pattern, then the
* directory is returned and the contained paths are not. A directory
* that does not match an exclude pattern will not be returned even if
* all of its contents are ignored. In this case, the contents are
* returned as individual entries.
*
* If this is set, files and directories that explicitly match an ignore
* pattern are reported. Implicitly ignored directories (directories that
* do not match an ignore pattern, but whose contents are all ignored)
* are not reported, instead all of the contents are reported.
*/
DIR_SHOW_IGNORED_TOO_MODE_MATCHING = 1<<8,
DIR_SKIP_NESTED_GIT = 1<<9
} flags;
/* An array of `struct dir_entry`, each element of which describes a path. */
struct dir_entry **entries;
/**
* used for ignored paths with the `DIR_SHOW_IGNORED_TOO` and
* `DIR_COLLECT_IGNORED` flags.
*/
struct dir_entry **ignored;
/**
* The name of the file to be read in each directory for excluded files
* (typically `.gitignore`).
*/
const char *exclude_per_dir;
/*
* We maintain three groups of 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, e.g.
* - .git/info/exclude
* - core.excludesfile
*
* Each group contains multiple exclude lists, a single list
* per source.
*/
#define EXC_CMDL 0
#define EXC_DIRS 1
#define EXC_FILE 2
struct exclude_list_group exclude_list_group[3];
/*
* Temporary variables which are used during loading of the
* per-directory exclude lists.
*
* exclude_stack points to the top of the exclude_stack, and
* basebuf contains the full path to the current
* (sub)directory in the traversal. Exclude points to the
* matching exclude struct if the directory is excluded.
*/
struct exclude_stack *exclude_stack;
struct path_pattern *pattern;
struct strbuf basebuf;
/* Enable untracked file cache if set */
struct untracked_cache *untracked;
struct oid_stat ss_info_exclude;
struct oid_stat ss_excludes_file;
unsigned unmanaged_exclude_files;
/* Stats about the traversal */
unsigned visited_paths;
unsigned visited_directories;
};
#define DIR_INIT { 0 }
struct dirent *readdir_skip_dot_and_dotdot(DIR *dirp);
/*Count the number of slashes for string s*/
int count_slashes(const char *s);
/*
* The ordering of these constants is significant, with
* higher-numbered match types signifying "closer" (i.e. more
* specific) matches which will override lower-numbered match types
* when populating the seen[] array.
*/
#define MATCHED_RECURSIVELY 1
#define MATCHED_RECURSIVELY_LEADING_PATHSPEC 2
#define MATCHED_FNMATCH 3
#define MATCHED_EXACTLY 4
int simple_length(const char *match);
int no_wildcard(const char *string);
char *common_prefix(const struct pathspec *pathspec);
int match_pathspec(struct index_state *istate,
const struct pathspec *pathspec,
const char *name, int namelen,
int prefix, char *seen, int is_dir);
int report_path_error(const char *ps_matched, const struct pathspec *pathspec);
int within_depth(const char *name, int namelen, int depth, int max_depth);
int fill_directory(struct dir_struct *dir,
struct index_state *istate,
const struct pathspec *pathspec);
int read_directory(struct dir_struct *, struct index_state *istate,
const char *path, int len,
const struct pathspec *pathspec);
enum pattern_match_result {
UNDECIDED = -1,
NOT_MATCHED = 0,
MATCHED = 1,
MATCHED_RECURSIVE = 2,
};
/*
* Scan the list of patterns to determine if the ordered list
* of patterns matches on 'pathname'.
*
* Return 1 for a match, 0 for not matched and -1 for undecided.
*/
enum pattern_match_result path_matches_pattern_list(const char *pathname,
int pathlen,
const char *basename, int *dtype,
struct pattern_list *pl,
struct index_state *istate);
int init_sparse_checkout_patterns(struct index_state *state);
int path_in_sparse_checkout(const char *path,
struct index_state *istate);
int path_in_cone_mode_sparse_checkout(const char *path,
struct index_state *istate);
struct dir_entry *dir_add_ignored(struct dir_struct *dir,
struct index_state *istate,
const char *pathname, int len);
/*
* these implement the matching logic for dir.c:excluded_from_list and
* attr.c:path_matches()
*/
int match_basename(const char *, int,
const char *, int, int, unsigned);
int match_pathname(const char *, int,
const char *, int,
const char *, int, int, unsigned);
struct path_pattern *last_matching_pattern(struct dir_struct *dir,
struct index_state *istate,
const char *name, int *dtype);
int is_excluded(struct dir_struct *dir,
struct index_state *istate,
const char *name, int *dtype);
int pl_hashmap_cmp(const void *unused_cmp_data,
const struct hashmap_entry *a,
const struct hashmap_entry *b,
const void *key);
int hashmap_contains_parent(struct hashmap *map,
const char *path,
struct strbuf *buffer);
struct pattern_list *add_pattern_list(struct dir_struct *dir,
int group_type, const char *src);
int add_patterns_from_file_to_list(const char *fname, const char *base, int baselen,
struct pattern_list *pl, struct index_state *istate,
unsigned flags);
void add_patterns_from_file(struct dir_struct *, const char *fname);
int add_patterns_from_blob_to_list(struct object_id *oid,
const char *base, int baselen,
struct pattern_list *pl);
void parse_path_pattern(const char **string, int *patternlen, unsigned *flags, int *nowildcardlen);
void add_pattern(const char *string, const char *base,
int baselen, struct pattern_list *pl, int srcpos);
void clear_pattern_list(struct pattern_list *pl);
void dir_clear(struct dir_struct *dir);
int repo_file_exists(struct repository *repo, const char *path);
int file_exists(const char *);
int is_inside_dir(const char *dir);
int dir_inside_of(const char *subdir, const char *dir);
static inline int is_dot_or_dotdot(const char *name)
{
return (name[0] == '.' &&
(name[1] == '\0' ||
(name[1] == '.' && name[2] == '\0')));
}
int is_empty_dir(const char *dir);
/*
* Retrieve the "humanish" basename of the given Git URL.
*
* For example:
* /path/to/repo.git => "repo"
* host.xz:foo/.git => "foo"
* http://example.com/user/bar.baz => "bar.baz"
*/
char *git_url_basename(const char *repo, int is_bundle, int is_bare);
void strip_dir_trailing_slashes(char *dir);
void setup_standard_excludes(struct dir_struct *dir);
char *get_sparse_checkout_filename(void);
int get_sparse_checkout_patterns(struct pattern_list *pl);
/* Constants for remove_dir_recursively: */
/*
* If a non-directory is found within path, stop and return an error.
* (In this case some empty directories might already have been
* removed.)
*/
#define REMOVE_DIR_EMPTY_ONLY 01
/*
* If any Git work trees are found within path, skip them without
* considering it an error.
*/
#define REMOVE_DIR_KEEP_NESTED_GIT 02
/* Remove the contents of path, but leave path itself. */
#define REMOVE_DIR_KEEP_TOPLEVEL 04
/* Remove the_original_cwd too */
#define REMOVE_DIR_PURGE_ORIGINAL_CWD 0x08
/*
* Remove path and its contents, recursively. flags is a combination
* of the above REMOVE_DIR_* constants. Return 0 on success.
*
* This function uses path as temporary scratch space, but restores it
* before returning.
*/
int remove_dir_recursively(struct strbuf *path, int flag);
/*
* Tries to remove the path, along with leading empty directories so long as
* those empty directories are not startup_info->original_cwd. Ignores
* ENOENT.
*/
int remove_path(const char *path);
int fspathcmp(const char *a, const char *b);
int fspatheq(const char *a, const char *b);
int fspathncmp(const char *a, const char *b, size_t count);
unsigned int fspathhash(const char *str);
/*
* The prefix part of pattern must not contains wildcards.
*/
struct pathspec_item;
int git_fnmatch(const struct pathspec_item *item,
const char *pattern, const char *string,
int prefix);
int submodule_path_match(struct index_state *istate,
const struct pathspec *ps,
const char *submodule_name,
char *seen);
static inline int ce_path_match(struct index_state *istate,
const struct cache_entry *ce,
const struct pathspec *pathspec,
char *seen)
{
return match_pathspec(istate, pathspec, ce->name, ce_namelen(ce), 0, seen,
S_ISDIR(ce->ce_mode) || S_ISGITLINK(ce->ce_mode));
}
static inline int dir_path_match(struct index_state *istate,
const struct dir_entry *ent,
const struct pathspec *pathspec,
int prefix, char *seen)
{
int has_trailing_dir = ent->len && ent->name[ent->len - 1] == '/';
int len = has_trailing_dir ? ent->len - 1 : ent->len;
return match_pathspec(istate, pathspec, ent->name, len, prefix, seen,
has_trailing_dir);
}
int cmp_dir_entry(const void *p1, const void *p2);
int check_dir_entry_contains(const struct dir_entry *out, const struct dir_entry *in);
void untracked_cache_invalidate_path(struct index_state *, const char *, int safe_path);
void untracked_cache_remove_from_index(struct index_state *, const char *);
void untracked_cache_add_to_index(struct index_state *, const char *);
void free_untracked_cache(struct untracked_cache *);
struct untracked_cache *read_untracked_extension(const void *data, unsigned long sz);
void write_untracked_extension(struct strbuf *out, struct untracked_cache *untracked);
void add_untracked_cache(struct index_state *istate);
void remove_untracked_cache(struct index_state *istate);
/*
* Connect a worktree to a git directory by creating (or overwriting) a
* '.git' file containing the location of the git directory. In the git
* directory set the core.worktree setting to indicate where the worktree is.
* When `recurse_into_nested` is set, recurse into any nested submodules,
* connecting them as well.
*/
void connect_work_tree_and_git_dir(const char *work_tree,
const char *git_dir,
int recurse_into_nested);
void relocate_gitdir(const char *path,
const char *old_git_dir,
const char *new_git_dir);
/**
* The "enum path_matches_kind" determines how path_match_flags() will
* behave. The flags come in sets, and one (and only one) must be
* provided out of each "set":
*
* PATH_MATCH_NATIVE:
* Path separator is is_dir_sep()
* PATH_MATCH_XPLATFORM:
* Path separator is is_xplatform_dir_sep()
*
* Do we use is_dir_sep() to check for a directory separator
* (*_NATIVE), or do we always check for '/' or '\' (*_XPLATFORM). The
* "*_NATIVE" version on Windows is the same as "*_XPLATFORM",
* everywhere else "*_NATIVE" means "only /".
*
* PATH_MATCH_STARTS_WITH_DOT_SLASH:
* Match a path starting with "./"
* PATH_MATCH_STARTS_WITH_DOT_DOT_SLASH:
* Match a path starting with "../"
*
* The "/" in the above is adjusted based on the "*_NATIVE" and
* "*_XPLATFORM" flags.
*/
enum path_match_flags {
PATH_MATCH_NATIVE = 1 << 0,
PATH_MATCH_XPLATFORM = 1 << 1,
PATH_MATCH_STARTS_WITH_DOT_SLASH = 1 << 2,
PATH_MATCH_STARTS_WITH_DOT_DOT_SLASH = 1 << 3,
};
#define PATH_MATCH_KINDS_MASK (PATH_MATCH_STARTS_WITH_DOT_SLASH | \
PATH_MATCH_STARTS_WITH_DOT_DOT_SLASH)
#define PATH_MATCH_PLATFORM_MASK (PATH_MATCH_NATIVE | PATH_MATCH_XPLATFORM)
/**
* path_match_flags() checks if a given "path" matches a given "enum
* path_match_flags" criteria.
*/
int path_match_flags(const char *const path, const enum path_match_flags f);
/**
* starts_with_dot_slash_native(): convenience wrapper for
* path_match_flags() with PATH_MATCH_STARTS_WITH_DOT_SLASH and
* PATH_MATCH_NATIVE.
*/
static inline int starts_with_dot_slash_native(const char *const path)
{
const enum path_match_flags what = PATH_MATCH_STARTS_WITH_DOT_SLASH;
return path_match_flags(path, what | PATH_MATCH_NATIVE);
}
/**
* starts_with_dot_slash_native(): convenience wrapper for
* path_match_flags() with PATH_MATCH_STARTS_WITH_DOT_DOT_SLASH and
* PATH_MATCH_NATIVE.
*/
static inline int starts_with_dot_dot_slash_native(const char *const path)
{
const enum path_match_flags what = PATH_MATCH_STARTS_WITH_DOT_DOT_SLASH;
return path_match_flags(path, what | PATH_MATCH_NATIVE);
}
#endif