dir.h

   1 #ifndef DIR_H
   2 #define DIR_H
   3
   4 /* See Documentation/technical/api-directory-listing.txt */
   5
   6 #include "strbuf.h"
   7
   8 struct dir_entry {
   9         unsigned int len;
  10         char name[FLEX_ARRAY]; /* more */
  11 };
  12
  13 #define EXC_FLAG_NODIR 1
  14 #define EXC_FLAG_ENDSWITH 4
  15 #define EXC_FLAG_MUSTBEDIR 8
  16 #define EXC_FLAG_NEGATIVE 16
  17
  18 /*
  19  * Each excludes file will be parsed into a fresh exclude_list which
  20  * is appended to the relevant exclude_list_group (either EXC_DIRS or
  21  * EXC_FILE).  An exclude_list within the EXC_CMDL exclude_list_group
  22  * can also be used to represent the list of --exclude values passed
  23  * via CLI args.
  24  */
  25 struct exclude_list {
  26         int nr;
  27         int alloc;
  28
  29         /* remember pointer to exclude file contents so we can free() */
  30         char *filebuf;
  31
  32         /* origin of list, e.g. path to filename, or descriptive string */
  33         const char *src;
  34
  35         struct exclude {
  36                 /*
  37                  * This allows callers of last_exclude_matching() etc.
  38                  * to determine the origin of the matching pattern.
  39                  */
  40                 struct exclude_list *el;
  41
  42                 const char *pattern;
  43                 int patternlen;
  44                 int nowildcardlen;
  45                 const char *base;
  46                 int baselen;
  47                 int flags;
  48
  49                 /*
  50                  * Counting starts from 1 for line numbers in ignore files,
  51                  * and from -1 decrementing for patterns from CLI args.
  52                  */
  53                 int srcpos;
  54         } **excludes;
  55 };
  56
  57 /*
  58  * The contents of the per-directory exclude files are lazily read on
  59  * demand and then cached in memory, one per exclude_stack struct, in
  60  * order to avoid opening and parsing each one every time that
  61  * directory is traversed.
  62  */
  63 struct exclude_stack {
  64         struct exclude_stack *prev; /* the struct exclude_stack for the parent directory */
  65         int baselen;
  66         int exclude_ix; /* index of exclude_list within EXC_DIRS exclude_list_group */
  67 };
  68
  69 struct exclude_list_group {
  70         int nr, alloc;
  71         struct exclude_list *el;
  72 };
  73
  74 struct dir_struct {
  75         int nr, alloc;
  76         int ignored_nr, ignored_alloc;
  77         enum {
  78                 DIR_SHOW_IGNORED = 1<<0,
  79                 DIR_SHOW_OTHER_DIRECTORIES = 1<<1,
  80                 DIR_HIDE_EMPTY_DIRECTORIES = 1<<2,
  81                 DIR_NO_GITLINKS = 1<<3,
  82                 DIR_COLLECT_IGNORED = 1<<4
  83         } flags;
  84         struct dir_entry **entries;
  85         struct dir_entry **ignored;
  86
  87         /* Exclude info */
  88         const char *exclude_per_dir;
  89
  90         /*
  91          * We maintain three groups of exclude pattern lists:
  92          *
  93          * EXC_CMDL lists patterns explicitly given on the command line.
  94          * EXC_DIRS lists patterns obtained from per-directory ignore files.
  95          * EXC_FILE lists patterns from fallback ignore files, e.g.
  96          *   - .git/info/exclude
  97          *   - core.excludesfile
  98          *
  99          * Each group contains multiple exclude lists, a single list
 100          * per source.
 101          */
 102 #define EXC_CMDL 0
 103 #define EXC_DIRS 1
 104 #define EXC_FILE 2
 105         struct exclude_list_group exclude_list_group[3];
 106
 107         /*
 108          * Temporary variables which are used during loading of the
 109          * per-directory exclude lists.
 110          *
 111          * exclude_stack points to the top of the exclude_stack, and
 112          * basebuf contains the full path to the current
 113          * (sub)directory in the traversal.
 114          */
 115         struct exclude_stack *exclude_stack;
 116         char basebuf[PATH_MAX];
 117 };
 118
 119 /*
 120  * The ordering of these constants is significant, with
 121  * higher-numbered match types signifying "closer" (i.e. more
 122  * specific) matches which will override lower-numbered match types
 123  * when populating the seen[] array.
 124  */
 125 #define MATCHED_RECURSIVELY 1
 126 #define MATCHED_FNMATCH 2
 127 #define MATCHED_EXACTLY 3
 128 extern char *common_prefix(const char **pathspec);
 129 extern int match_pathspec(const char **pathspec, const char *name, int namelen, int prefix, char *seen);
 130 extern int match_pathspec_depth(const struct pathspec *pathspec,
 131                                 const char *name, int namelen,
 132                                 int prefix, char *seen);
 133 extern int within_depth(const char *name, int namelen, int depth, int max_depth);
 134
 135 extern int fill_directory(struct dir_struct *dir, const char **pathspec);
 136 extern int read_directory(struct dir_struct *, const char *path, int len, const char **pathspec);
 137
 138 extern int is_excluded_from_list(const char *pathname, int pathlen, const char *basename,
 139                                  int *dtype, struct exclude_list *el);
 140 struct dir_entry *dir_add_ignored(struct dir_struct *dir, const char *pathname, int len);
 141
 142 /*
 143  * these implement the matching logic for dir.c:excluded_from_list and
 144  * attr.c:path_matches()
 145  */
 146 extern int match_basename(const char *, int,
 147                           const char *, int, int, int);
 148 extern int match_pathname(const char *, int,
 149                           const char *, int,
 150                           const char *, int, int, int);
 151
 152 /*
 153  * The is_excluded() API is meant for callers that check each level of leading
 154  * directory hierarchies with is_excluded() to avoid recursing into excluded
 155  * directories.  Callers that do not do so should use this API instead.
 156  */
 157 struct path_exclude_check {
 158         struct dir_struct *dir;
 159         struct exclude *exclude;
 160         struct strbuf path;
 161 };
 162 extern void path_exclude_check_init(struct path_exclude_check *, struct dir_struct *);
 163 extern void path_exclude_check_clear(struct path_exclude_check *);
 164 extern struct exclude *last_exclude_matching_path(struct path_exclude_check *, const char *,
 165                                                   int namelen, int *dtype);
 166 extern int is_path_excluded(struct path_exclude_check *, const char *, int namelen, int *dtype);
 167
 168
 169 extern struct exclude_list *add_exclude_list(struct dir_struct *dir,
 170                                              int group_type, const char *src);
 171 extern int add_excludes_from_file_to_list(const char *fname, const char *base, int baselen,
 172                                           struct exclude_list *el, int check_index);
 173 extern void add_excludes_from_file(struct dir_struct *, const char *fname);
 174 extern void parse_exclude_pattern(const char **string, int *patternlen, int *flags, int *nowildcardlen);
 175 extern void add_exclude(const char *string, const char *base,
 176                         int baselen, struct exclude_list *el, int srcpos);
 177 extern void clear_exclude_list(struct exclude_list *el);
 178 extern void clear_directory(struct dir_struct *dir);
 179 extern int file_exists(const char *);
 180
 181 extern int is_inside_dir(const char *dir);
 182 extern int dir_inside_of(const char *subdir, const char *dir);
 183
 184 static inline int is_dot_or_dotdot(const char *name)
 185 {
 186         return (name[0] == '.' &&
 187                 (name[1] == '\0' ||
 188                  (name[1] == '.' && name[2] == '\0')));
 189 }
 190
 191 extern int is_empty_dir(const char *dir);
 192
 193 extern void setup_standard_excludes(struct dir_struct *dir);
 194
 195 #define REMOVE_DIR_EMPTY_ONLY 01
 196 #define REMOVE_DIR_KEEP_NESTED_GIT 02
 197 #define REMOVE_DIR_KEEP_TOPLEVEL 04
 198 extern int remove_dir_recursively(struct strbuf *path, int flag);
 199
 200 /* tries to remove the path with empty directories along it, ignores ENOENT */
 201 extern int remove_path(const char *path);
 202
 203 extern int strcmp_icase(const char *a, const char *b);
 204 extern int strncmp_icase(const char *a, const char *b, size_t count);
 205 extern int fnmatch_icase(const char *pattern, const char *string, int flags);
 206
 207 /*
 208  * The prefix part of pattern must not contains wildcards.
 209  */
 210 #define GFNM_PATHNAME 1         /* similar to FNM_PATHNAME */
 211 #define GFNM_ONESTAR  2         /* there is only _one_ wildcard, a star */
 212
 213 extern int git_fnmatch(const char *pattern, const char *string,
 214                        int flags, int prefix);
 215
 216 #endif