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                DIR_SHOW_IGNORED_TOO = 1<<5,
  84                DIR_COLLECT_KILLED_ONLY = 1<<6
  85        } flags;
  86        struct dir_entry **entries;
  87        struct dir_entry **ignored;
  88
  89        /* Exclude info */
  90        const char *exclude_per_dir;
  91
  92        /*
  93         * We maintain three groups of exclude pattern lists:
  94         *
  95         * EXC_CMDL lists patterns explicitly given on the command line.
  96         * EXC_DIRS lists patterns obtained from per-directory ignore files.
  97         * EXC_FILE lists patterns from fallback ignore files, e.g.
  98         *   - .git/info/exclude
  99         *   - core.excludesfile
 100         *
 101         * Each group contains multiple exclude lists, a single list
 102         * per source.
 103         */
 104#define EXC_CMDL 0
 105#define EXC_DIRS 1
 106#define EXC_FILE 2
 107        struct exclude_list_group exclude_list_group[3];
 108
 109        /*
 110         * Temporary variables which are used during loading of the
 111         * per-directory exclude lists.
 112         *
 113         * exclude_stack points to the top of the exclude_stack, and
 114         * basebuf contains the full path to the current
 115         * (sub)directory in the traversal. Exclude points to the
 116         * matching exclude struct if the directory is excluded.
 117         */
 118        struct exclude_stack *exclude_stack;
 119        struct exclude *exclude;
 120        char basebuf[PATH_MAX];
 121};
 122
 123/*
 124 * The ordering of these constants is significant, with
 125 * higher-numbered match types signifying "closer" (i.e. more
 126 * specific) matches which will override lower-numbered match types
 127 * when populating the seen[] array.
 128 */
 129#define MATCHED_RECURSIVELY 1
 130#define MATCHED_FNMATCH 2
 131#define MATCHED_EXACTLY 3
 132extern int simple_length(const char *match);
 133extern int no_wildcard(const char *string);
 134extern char *common_prefix(const struct pathspec *pathspec);
 135extern int match_pathspec(const struct pathspec *pathspec,
 136                          const char *name, int namelen,
 137                          int prefix, char *seen, int is_dir);
 138extern int within_depth(const char *name, int namelen, int depth, int max_depth);
 139
 140extern int fill_directory(struct dir_struct *dir, const struct pathspec *pathspec);
 141extern int read_directory(struct dir_struct *, const char *path, int len, const struct pathspec *pathspec);
 142
 143extern int is_excluded_from_list(const char *pathname, int pathlen, const char *basename,
 144                                 int *dtype, struct exclude_list *el);
 145struct dir_entry *dir_add_ignored(struct dir_struct *dir, const char *pathname, int len);
 146
 147/*
 148 * these implement the matching logic for dir.c:excluded_from_list and
 149 * attr.c:path_matches()
 150 */
 151extern int match_basename(const char *, int,
 152                          const char *, int, int, int);
 153extern int match_pathname(const char *, int,
 154                          const char *, int,
 155                          const char *, int, int, int);
 156
 157extern struct exclude *last_exclude_matching(struct dir_struct *dir,
 158                                             const char *name, int *dtype);
 159
 160extern int is_excluded(struct dir_struct *dir, const char *name, int *dtype);
 161
 162extern struct exclude_list *add_exclude_list(struct dir_struct *dir,
 163                                             int group_type, const char *src);
 164extern int add_excludes_from_file_to_list(const char *fname, const char *base, int baselen,
 165                                          struct exclude_list *el, int check_index);
 166extern void add_excludes_from_file(struct dir_struct *, const char *fname);
 167extern void parse_exclude_pattern(const char **string, int *patternlen, int *flags, int *nowildcardlen);
 168extern void add_exclude(const char *string, const char *base,
 169                        int baselen, struct exclude_list *el, int srcpos);
 170extern void clear_exclude_list(struct exclude_list *el);
 171extern void clear_directory(struct dir_struct *dir);
 172extern int file_exists(const char *);
 173
 174extern int is_inside_dir(const char *dir);
 175extern int dir_inside_of(const char *subdir, const char *dir);
 176
 177static inline int is_dot_or_dotdot(const char *name)
 178{
 179        return (name[0] == '.' &&
 180                (name[1] == '\0' ||
 181                 (name[1] == '.' && name[2] == '\0')));
 182}
 183
 184extern int is_empty_dir(const char *dir);
 185
 186extern void setup_standard_excludes(struct dir_struct *dir);
 187
 188#define REMOVE_DIR_EMPTY_ONLY 01
 189#define REMOVE_DIR_KEEP_NESTED_GIT 02
 190#define REMOVE_DIR_KEEP_TOPLEVEL 04
 191extern int remove_dir_recursively(struct strbuf *path, int flag);
 192
 193/* tries to remove the path with empty directories along it, ignores ENOENT */
 194extern int remove_path(const char *path);
 195
 196extern int strcmp_icase(const char *a, const char *b);
 197extern int strncmp_icase(const char *a, const char *b, size_t count);
 198extern int fnmatch_icase(const char *pattern, const char *string, int flags);
 199
 200/*
 201 * The prefix part of pattern must not contains wildcards.
 202 */
 203struct pathspec_item;
 204extern int git_fnmatch(const struct pathspec_item *item,
 205                       const char *pattern, const char *string,
 206                       int prefix);
 207
 208static inline int ce_path_match(const struct cache_entry *ce,
 209                                const struct pathspec *pathspec,
 210                                char *seen)
 211{
 212        return match_pathspec(pathspec, ce->name, ce_namelen(ce), 0, seen,
 213                              S_ISDIR(ce->ce_mode) || S_ISGITLINK(ce->ce_mode));
 214}
 215
 216static inline int dir_path_match(const struct dir_entry *ent,
 217                                 const struct pathspec *pathspec,
 218                                 int prefix, char *seen)
 219{
 220        int has_trailing_dir = ent->len && ent->name[ent->len - 1] == '/';
 221        int len = has_trailing_dir ? ent->len - 1 : ent->len;
 222        return match_pathspec(pathspec, ent->name, len, prefix, seen,
 223                              has_trailing_dir);
 224}
 225
 226#endif