diff options
Diffstat (limited to 'dir.h')
| -rw-r--r-- | dir.h | 258 |
1 files changed, 219 insertions, 39 deletions
@@ -1,6 +1,8 @@ #ifndef DIR_H #define DIR_H +/* See Documentation/technical/api-directory-listing.txt */ + #include "strbuf.h" struct dir_entry { @@ -11,26 +13,132 @@ struct dir_entry { #define EXC_FLAG_NODIR 1 #define EXC_FLAG_ENDSWITH 4 #define EXC_FLAG_MUSTBEDIR 8 +#define EXC_FLAG_NEGATIVE 16 + +struct exclude { + /* + * This allows callers of last_exclude_matching() etc. + * to determine the origin of the matching pattern. + */ + struct exclude_list *el; + const char *pattern; + int patternlen; + int nowildcardlen; + const char *base; + int baselen; + int flags; + + /* + * Counting starts from 1 for line numbers in ignore files, + * and from -1 decrementing for patterns from CLI args. + */ + int srcpos; +}; + +/* + * 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 exclude_list { int nr; int alloc; - struct exclude { - const char *pattern; - int patternlen; - int nowildcardlen; - const char *base; - int baselen; - int to_exclude; - int flags; - } **excludes; + + /* 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 exclude **excludes; }; +/* + * 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; - char *filebuf; + struct exclude_stack *prev; /* the struct exclude_stack for the parent directory */ int baselen; - int exclude_ix; + 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 exclude_list *el; +}; + +struct sha1_stat { + struct stat_data stat; + unsigned char sha1[20]; + 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 SHA-1 means this directory does not have .gitignore */ + unsigned char exclude_sha1[20]; + char name[FLEX_ARRAY]; +}; + +struct untracked_cache { + struct sha1_stat ss_info_exclude; + struct sha1_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; }; struct dir_struct { @@ -41,65 +149,103 @@ struct dir_struct { DIR_SHOW_OTHER_DIRECTORIES = 1<<1, DIR_HIDE_EMPTY_DIRECTORIES = 1<<2, DIR_NO_GITLINKS = 1<<3, - DIR_COLLECT_IGNORED = 1<<4 + DIR_COLLECT_IGNORED = 1<<4, + DIR_SHOW_IGNORED_TOO = 1<<5, + DIR_COLLECT_KILLED_ONLY = 1<<6 } flags; struct dir_entry **entries; struct dir_entry **ignored; /* Exclude info */ const char *exclude_per_dir; - struct exclude_list exclude_list[3]; + /* - * We maintain three exclude pattern lists: + * 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. + * 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; - char basebuf[PATH_MAX]; + struct exclude *exclude; + struct strbuf basebuf; + + /* Enable untracked file cache if set */ + struct untracked_cache *untracked; + struct sha1_stat ss_info_exclude; + struct sha1_stat ss_excludes_file; + unsigned unmanaged_exclude_files; }; +/* + * 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_FNMATCH 2 #define MATCHED_EXACTLY 3 -extern char *common_prefix(const char **pathspec); -extern int match_pathspec(const char **pathspec, const char *name, int namelen, int prefix, char *seen); -extern int match_pathspec_depth(const struct pathspec *pathspec, - const char *name, int namelen, - int prefix, char *seen); +extern int simple_length(const char *match); +extern int no_wildcard(const char *string); +extern char *common_prefix(const struct pathspec *pathspec); +extern int match_pathspec(const struct pathspec *pathspec, + const char *name, int namelen, + int prefix, char *seen, int is_dir); +extern int report_path_error(const char *ps_matched, const struct pathspec *pathspec, const char *prefix); extern int within_depth(const char *name, int namelen, int depth, int max_depth); -extern int fill_directory(struct dir_struct *dir, const char **pathspec); -extern int read_directory(struct dir_struct *, const char *path, int len, const char **pathspec); +extern int fill_directory(struct dir_struct *dir, const struct pathspec *pathspec); +extern int read_directory(struct dir_struct *, const char *path, int len, const struct pathspec *pathspec); -extern int excluded_from_list(const char *pathname, int pathlen, const char *basename, - int *dtype, struct exclude_list *el); +extern int is_excluded_from_list(const char *pathname, int pathlen, const char *basename, + int *dtype, struct exclude_list *el); struct dir_entry *dir_add_ignored(struct dir_struct *dir, const char *pathname, int len); /* - * The excluded() API is meant for callers that check each level of leading - * directory hierarchies with excluded() to avoid recursing into excluded - * directories. Callers that do not do so should use this API instead. + * these implement the matching logic for dir.c:excluded_from_list and + * attr.c:path_matches() */ -struct path_exclude_check { - struct dir_struct *dir; - struct strbuf path; -}; -extern void path_exclude_check_init(struct path_exclude_check *, struct dir_struct *); -extern void path_exclude_check_clear(struct path_exclude_check *); -extern int path_excluded(struct path_exclude_check *, const char *, int namelen, int *dtype); +extern int match_basename(const char *, int, + const char *, int, int, int); +extern int match_pathname(const char *, int, + const char *, int, + const char *, int, int, int); + +extern struct exclude *last_exclude_matching(struct dir_struct *dir, + const char *name, int *dtype); +extern int is_excluded(struct dir_struct *dir, const char *name, int *dtype); +extern struct exclude_list *add_exclude_list(struct dir_struct *dir, + int group_type, const char *src); extern int add_excludes_from_file_to_list(const char *fname, const char *base, int baselen, - char **buf_p, struct exclude_list *which, int check_index); + struct exclude_list *el, int check_index); extern void add_excludes_from_file(struct dir_struct *, const char *fname); +extern void parse_exclude_pattern(const char **string, int *patternlen, int *flags, int *nowildcardlen); extern void add_exclude(const char *string, const char *base, - int baselen, struct exclude_list *which); -extern void free_excludes(struct exclude_list *el); + int baselen, struct exclude_list *el, int srcpos); +extern void clear_exclude_list(struct exclude_list *el); +extern void clear_directory(struct dir_struct *dir); extern int file_exists(const char *); extern int is_inside_dir(const char *dir); @@ -128,4 +274,38 @@ extern int strcmp_icase(const char *a, const char *b); extern int strncmp_icase(const char *a, const char *b, size_t count); extern int fnmatch_icase(const char *pattern, const char *string, int flags); +/* + * The prefix part of pattern must not contains wildcards. + */ +struct pathspec_item; +extern int git_fnmatch(const struct pathspec_item *item, + const char *pattern, const char *string, + int prefix); + +static inline int ce_path_match(const struct cache_entry *ce, + const struct pathspec *pathspec, + char *seen) +{ + return match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen, + S_ISDIR(ce->ce_mode) || S_ISGITLINK(ce->ce_mode)); +} + +static inline int dir_path_match(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(pathspec, ent->name, len, prefix, seen, + has_trailing_dir); +} + +void untracked_cache_invalidate_path(struct index_state *, const char *); +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_ident(struct untracked_cache *); #endif |