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 struct exclude {
  19         /*
  20          * This allows callers of last_exclude_matching() etc.
  21          * to determine the origin of the matching pattern.
  22          */
  23         struct exclude_list *el;
  24
  25         const char *pattern;
  26         int patternlen;
  27         int nowildcardlen;
  28         const char *base;
  29         int baselen;
  30         int flags;
  31
  32         /*
  33          * Counting starts from 1 for line numbers in ignore files,
  34          * and from -1 decrementing for patterns from CLI args.
  35          */
  36         int srcpos;
  37 };
  38
  39 /*
  40  * Each excludes file will be parsed into a fresh exclude_list which
  41  * is appended to the relevant exclude_list_group (either EXC_DIRS or
  42  * EXC_FILE).  An exclude_list within the EXC_CMDL exclude_list_group
  43  * can also be used to represent the list of --exclude values passed
  44  * via CLI args.
  45  */
  46 struct exclude_list {
  47         int nr;
  48         int alloc;
  49
  50         /* remember pointer to exclude file contents so we can free() */
  51         char *filebuf;
  52
  53         /* origin of list, e.g. path to filename, or descriptive string */
  54         const char *src;
  55
  56         struct exclude **excludes;
  57 };
  58
  59 /*
  60  * The contents of the per-directory exclude files are lazily read on
  61  * demand and then cached in memory, one per exclude_stack struct, in
  62  * order to avoid opening and parsing each one every time that
  63  * directory is traversed.
  64  */
  65 struct exclude_stack {
  66         struct exclude_stack *prev; /* the struct exclude_stack for the parent directory */
  67         int baselen;
  68         int exclude_ix; /* index of exclude_list within EXC_DIRS exclude_list_group */
  69 };
  70
  71 struct exclude_list_group {
  72         int nr, alloc;
  73         struct exclude_list *el;
  74 };
  75
  76 struct dir_struct {
  77         int nr, alloc;
  78         int ignored_nr, ignored_alloc;
  79         enum {
  80                 DIR_SHOW_IGNORED = 1<<0,
  81                 DIR_SHOW_OTHER_DIRECTORIES = 1<<1,
  82                 DIR_HIDE_EMPTY_DIRECTORIES = 1<<2,
  83                 DIR_NO_GITLINKS = 1<<3,
  84                 DIR_COLLECT_IGNORED = 1<<4,
  85                 DIR_SHOW_IGNORED_TOO = 1<<5,
  86                 DIR_COLLECT_KILLED_ONLY = 1<<6
  87         } flags;
  88         struct dir_entry **entries;
  89         struct dir_entry **ignored;
  90
  91         /* Exclude info */
  92         const char *exclude_per_dir;
  93
  94         /*
  95          * We maintain three groups of exclude pattern lists:
  96          *
  97          * EXC_CMDL lists patterns explicitly given on the command line.
  98          * EXC_DIRS lists patterns obtained from per-directory ignore files.
  99          * EXC_FILE lists patterns from fallback ignore files, e.g.
 100          *   - .git/info/exclude
 101          *   - core.excludesfile
 102          *
 103          * Each group contains multiple exclude lists, a single list
 104          * per source.
 105          */
 106 #define EXC_CMDL 0
 107 #define EXC_DIRS 1
 108 #define EXC_FILE 2
 109         struct exclude_list_group exclude_list_group[3];
 110
 111         /*
 112          * Temporary variables which are used during loading of the
 113          * per-directory exclude lists.
 114          *
 115          * exclude_stack points to the top of the exclude_stack, and
 116          * basebuf contains the full path to the current
 117          * (sub)directory in the traversal. Exclude points to the
 118          * matching exclude struct if the directory is excluded.
 119          */
 120         struct exclude_stack *exclude_stack;
 121         struct exclude *exclude;
 122         struct strbuf basebuf;
 123 };
 124
 125 /*
 126  * The ordering of these constants is significant, with
 127  * higher-numbered match types signifying "closer" (i.e. more
 128  * specific) matches which will override lower-numbered match types
 129  * when populating the seen[] array.
 130  */
 131 #define MATCHED_RECURSIVELY 1
 132 #define MATCHED_FNMATCH 2
 133 #define MATCHED_EXACTLY 3
 134 extern int simple_length(const char *match);
 135 extern int no_wildcard(const char *string);
 136 extern char *common_prefix(const struct pathspec *pathspec);
 137 extern int match_pathspec(const struct pathspec *pathspec,
 138                           const char *name, int namelen,
 139                           int prefix, char *seen, int is_dir);
 140 extern int within_depth(const char *name, int namelen, int depth, int max_depth);
 141
 142 extern int fill_directory(struct dir_struct *dir, const struct pathspec *pathspec);
 143 extern int read_directory(struct dir_struct *, const char *path, int len, const struct pathspec *pathspec);
 144
 145 extern int is_excluded_from_list(const char *pathname, int pathlen, const char *basename,
 146                                  int *dtype, struct exclude_list *el);
 147 struct dir_entry *dir_add_ignored(struct dir_struct *dir, const char *pathname, int len);
 148
 149 /*
 150  * these implement the matching logic for dir.c:excluded_from_list and
 151  * attr.c:path_matches()
 152  */
 153 extern int match_basename(const char *, int,
 154                           const char *, int, int, int);
 155 extern int match_pathname(const char *, int,
 156                           const char *, int,
 157                           const char *, int, int, int);
 158
 159 extern struct exclude *last_exclude_matching(struct dir_struct *dir,
 160                                              const char *name, int *dtype);
 161
 162 extern int is_excluded(struct dir_struct *dir, const char *name, int *dtype);
 163
 164 extern struct exclude_list *add_exclude_list(struct dir_struct *dir,
 165                                              int group_type, const char *src);
 166 extern int add_excludes_from_file_to_list(const char *fname, const char *base, int baselen,
 167                                           struct exclude_list *el, int check_index);
 168 extern void add_excludes_from_file(struct dir_struct *, const char *fname);
 169 extern void parse_exclude_pattern(const char **string, int *patternlen, int *flags, int *nowildcardlen);
 170 extern void add_exclude(const char *string, const char *base,
 171                         int baselen, struct exclude_list *el, int srcpos);
 172 extern void clear_exclude_list(struct exclude_list *el);
 173 extern void clear_directory(struct dir_struct *dir);
 174 extern int file_exists(const char *);
 175
 176 extern int is_inside_dir(const char *dir);
 177 extern int dir_inside_of(const char *subdir, const char *dir);
 178
 179 static inline int is_dot_or_dotdot(const char *name)
 180 {
 181         return (name[0] == '.' &&
 182                 (name[1] == '\0' ||
 183                  (name[1] == '.' && name[2] == '\0')));
 184 }
 185
 186 extern int is_empty_dir(const char *dir);
 187
 188 extern void setup_standard_excludes(struct dir_struct *dir);
 189
 190 #define REMOVE_DIR_EMPTY_ONLY 01
 191 #define REMOVE_DIR_KEEP_NESTED_GIT 02
 192 #define REMOVE_DIR_KEEP_TOPLEVEL 04
 193 extern int remove_dir_recursively(struct strbuf *path, int flag);
 194
 195 /* tries to remove the path with empty directories along it, ignores ENOENT */
 196 extern int remove_path(const char *path);
 197
 198 extern int strcmp_icase(const char *a, const char *b);
 199 extern int strncmp_icase(const char *a, const char *b, size_t count);
 200 extern int fnmatch_icase(const char *pattern, const char *string, int flags);
 201
 202 /*
 203  * The prefix part of pattern must not contains wildcards.
 204  */
 205 struct pathspec_item;
 206 extern int git_fnmatch(const struct pathspec_item *item,
 207                        const char *pattern, const char *string,
 208                        int prefix);
 209
 210 static inline int ce_path_match(const struct cache_entry *ce,
 211                                 const struct pathspec *pathspec,
 212                                 char *seen)
 213 {
 214         return match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen,
 215                               S_ISDIR(ce->ce_mode) || S_ISGITLINK(ce->ce_mode));
 216 }
 217
 218 static inline int dir_path_match(const struct dir_entry *ent,
 219                                  const struct pathspec *pathspec,
 220                                  int prefix, char *seen)
 221 {
 222         int has_trailing_dir = ent->len && ent->name[ent->len - 1] == '/';
 223         int len = has_trailing_dir ? ent->len - 1 : ent->len;
 224         return match_pathspec(pathspec, ent->name, len, prefix, seen,
 225                               has_trailing_dir);
 226 }
 227
 228 #endif