Andrew's git - gitweb.git/blob

   1#ifndef DIR_H
   2#define DIR_H
   3
   4/* See Documentation/technical/api-directory-listing.txt */
   5
   6#include "strbuf.h"
   7
   8struct 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 */
  25struct 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 */
  63struct 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
  69struct exclude_list_group {
  70        int nr, alloc;
  71        struct exclude_list *el;
  72};
  73
  74struct 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. Exclude points to the
 114         * matching exclude struct if the directory is excluded.
 115         */
 116        struct exclude_stack *exclude_stack;
 117        struct exclude *exclude;
 118        char basebuf[PATH_MAX];
 119};
 120
 121/*
 122 * The ordering of these constants is significant, with
 123 * higher-numbered match types signifying "closer" (i.e. more
 124 * specific) matches which will override lower-numbered match types
 125 * when populating the seen[] array.
 126 */
 127#define MATCHED_RECURSIVELY 1
 128#define MATCHED_FNMATCH 2
 129#define MATCHED_EXACTLY 3
 130extern char *common_prefix(const char **pathspec);
 131extern int match_pathspec(const char **pathspec, const char *name, int namelen, int prefix, char *seen);
 132extern int match_pathspec_depth(const struct pathspec *pathspec,
 133                                const char *name, int namelen,
 134                                int prefix, char *seen);
 135extern int within_depth(const char *name, int namelen, int depth, int max_depth);
 136
 137extern int fill_directory(struct dir_struct *dir, const char **pathspec);
 138extern int read_directory(struct dir_struct *, const char *path, int len, const char **pathspec);
 139
 140extern int is_excluded_from_list(const char *pathname, int pathlen, const char *basename,
 141                                 int *dtype, struct exclude_list *el);
 142struct dir_entry *dir_add_ignored(struct dir_struct *dir, const char *pathname, int len);
 143
 144/*
 145 * these implement the matching logic for dir.c:excluded_from_list and
 146 * attr.c:path_matches()
 147 */
 148extern int match_basename(const char *, int,
 149                          const char *, int, int, int);
 150extern int match_pathname(const char *, int,
 151                          const char *, int,
 152                          const char *, int, int, int);
 153
 154/*
 155 * The is_excluded() API is meant for callers that check each level of leading
 156 * directory hierarchies with is_excluded() to avoid recursing into excluded
 157 * directories.  Callers that do not do so should use this API instead.
 158 */
 159struct path_exclude_check {
 160        struct dir_struct *dir;
 161};
 162extern void path_exclude_check_init(struct path_exclude_check *, struct dir_struct *);
 163extern void path_exclude_check_clear(struct path_exclude_check *);
 164extern struct exclude *last_exclude_matching_path(struct path_exclude_check *, const char *,
 165                                                  int namelen, int *dtype);
 166extern int is_path_excluded(struct path_exclude_check *, const char *, int namelen, int *dtype);
 167
 168
 169extern struct exclude_list *add_exclude_list(struct dir_struct *dir,
 170                                             int group_type, const char *src);
 171extern int add_excludes_from_file_to_list(const char *fname, const char *base, int baselen,
 172                                          struct exclude_list *el, int check_index);
 173extern void add_excludes_from_file(struct dir_struct *, const char *fname);
 174extern void parse_exclude_pattern(const char **string, int *patternlen, int *flags, int *nowildcardlen);
 175extern void add_exclude(const char *string, const char *base,
 176                        int baselen, struct exclude_list *el, int srcpos);
 177extern void clear_exclude_list(struct exclude_list *el);
 178extern void clear_directory(struct dir_struct *dir);
 179extern int file_exists(const char *);
 180
 181extern int is_inside_dir(const char *dir);
 182extern int dir_inside_of(const char *subdir, const char *dir);
 183
 184static 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
 191extern int is_empty_dir(const char *dir);
 192
 193extern 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
 198extern int remove_dir_recursively(struct strbuf *path, int flag);
 199
 200/* tries to remove the path with empty directories along it, ignores ENOENT */
 201extern int remove_path(const char *path);
 202
 203extern int strcmp_icase(const char *a, const char *b);
 204extern int strncmp_icase(const char *a, const char *b, size_t count);
 205extern 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
 213extern int git_fnmatch(const char *pattern, const char *string,
 214                       int flags, int prefix);
 215
 216#endif