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 .gitignore file will be parsed into patterns which are then
  20  * appended to the relevant exclude_list (either EXC_DIRS or
  21  * EXC_FILE).  exclude_lists are also used to represent the list of
  22  * --exclude values passed via CLI args (EXC_CMDL).
  23  */
  24 struct exclude_list {
  25         int nr;
  26         int alloc;
  27         struct exclude {
  28                 const char *pattern;
  29                 int patternlen;
  30                 int nowildcardlen;
  31                 const char *base;
  32                 int baselen;
  33                 int flags;
  34         } **excludes;
  35 };
  36
  37 /*
  38  * The contents of the per-directory exclude files are lazily read on
  39  * demand and then cached in memory, one per exclude_stack struct, in
  40  * order to avoid opening and parsing each one every time that
  41  * directory is traversed.
  42  */
  43 struct exclude_stack {
  44         struct exclude_stack *prev; /* the struct exclude_stack for the parent directory */
  45         char *filebuf; /* remember pointer to per-directory exclude file contents so we can free() */
  46         int baselen;
  47         int exclude_ix;
  48 };
  49
  50 struct dir_struct {
  51         int nr, alloc;
  52         int ignored_nr, ignored_alloc;
  53         enum {
  54                 DIR_SHOW_IGNORED = 1<<0,
  55                 DIR_SHOW_OTHER_DIRECTORIES = 1<<1,
  56                 DIR_HIDE_EMPTY_DIRECTORIES = 1<<2,
  57                 DIR_NO_GITLINKS = 1<<3,
  58                 DIR_COLLECT_IGNORED = 1<<4
  59         } flags;
  60         struct dir_entry **entries;
  61         struct dir_entry **ignored;
  62
  63         /* Exclude info */
  64         const char *exclude_per_dir;
  65         struct exclude_list exclude_list[3];
  66         /*
  67          * We maintain three exclude pattern lists:
  68          * EXC_CMDL lists patterns explicitly given on the command line.
  69          * EXC_DIRS lists patterns obtained from per-directory ignore files.
  70          * EXC_FILE lists patterns from fallback ignore files.
  71          */
  72 #define EXC_CMDL 0
  73 #define EXC_DIRS 1
  74 #define EXC_FILE 2
  75
  76         /*
  77          * Temporary variables which are used during loading of the
  78          * per-directory exclude lists.
  79          *
  80          * exclude_stack points to the top of the exclude_stack, and
  81          * basebuf contains the full path to the current
  82          * (sub)directory in the traversal.
  83          */
  84         struct exclude_stack *exclude_stack;
  85         char basebuf[PATH_MAX];
  86 };
  87
  88 #define MATCHED_RECURSIVELY 1
  89 #define MATCHED_FNMATCH 2
  90 #define MATCHED_EXACTLY 3
  91 extern char *common_prefix(const char **pathspec);
  92 extern int match_pathspec(const char **pathspec, const char *name, int namelen, int prefix, char *seen);
  93 extern int match_pathspec_depth(const struct pathspec *pathspec,
  94                                 const char *name, int namelen,
  95                                 int prefix, char *seen);
  96 extern int within_depth(const char *name, int namelen, int depth, int max_depth);
  97
  98 extern int fill_directory(struct dir_struct *dir, const char **pathspec);
  99 extern int read_directory(struct dir_struct *, const char *path, int len, const char **pathspec);
 100
 101 extern int excluded_from_list(const char *pathname, int pathlen, const char *basename,
 102                               int *dtype, struct exclude_list *el);
 103 struct dir_entry *dir_add_ignored(struct dir_struct *dir, const char *pathname, int len);
 104
 105 /*
 106  * these implement the matching logic for dir.c:excluded_from_list and
 107  * attr.c:path_matches()
 108  */
 109 extern int match_basename(const char *, int,
 110                           const char *, int, int, int);
 111 extern int match_pathname(const char *, int,
 112                           const char *, int,
 113                           const char *, int, int, int);
 114
 115 /*
 116  * The excluded() API is meant for callers that check each level of leading
 117  * directory hierarchies with excluded() to avoid recursing into excluded
 118  * directories.  Callers that do not do so should use this API instead.
 119  */
 120 struct path_exclude_check {
 121         struct dir_struct *dir;
 122         struct strbuf path;
 123 };
 124 extern void path_exclude_check_init(struct path_exclude_check *, struct dir_struct *);
 125 extern void path_exclude_check_clear(struct path_exclude_check *);
 126 extern int path_excluded(struct path_exclude_check *, const char *, int namelen, int *dtype);
 127
 128
 129 extern int add_excludes_from_file_to_list(const char *fname, const char *base, int baselen,
 130                                           char **buf_p, struct exclude_list *which, int check_index);
 131 extern void add_excludes_from_file(struct dir_struct *, const char *fname);
 132 extern void parse_exclude_pattern(const char **string, int *patternlen, int *flags, int *nowildcardlen);
 133 extern void add_exclude(const char *string, const char *base,
 134                         int baselen, struct exclude_list *which);
 135 extern void free_excludes(struct exclude_list *el);
 136 extern int file_exists(const char *);
 137
 138 extern int is_inside_dir(const char *dir);
 139 extern int dir_inside_of(const char *subdir, const char *dir);
 140
 141 static inline int is_dot_or_dotdot(const char *name)
 142 {
 143         return (name[0] == '.' &&
 144                 (name[1] == '\0' ||
 145                  (name[1] == '.' && name[2] == '\0')));
 146 }
 147
 148 extern int is_empty_dir(const char *dir);
 149
 150 extern void setup_standard_excludes(struct dir_struct *dir);
 151
 152 #define REMOVE_DIR_EMPTY_ONLY 01
 153 #define REMOVE_DIR_KEEP_NESTED_GIT 02
 154 #define REMOVE_DIR_KEEP_TOPLEVEL 04
 155 extern int remove_dir_recursively(struct strbuf *path, int flag);
 156
 157 /* tries to remove the path with empty directories along it, ignores ENOENT */
 158 extern int remove_path(const char *path);
 159
 160 extern int strcmp_icase(const char *a, const char *b);
 161 extern int strncmp_icase(const char *a, const char *b, size_t count);
 162 extern int fnmatch_icase(const char *pattern, const char *string, int flags);
 163
 164 #endif