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   1 #ifndef TREE_WALK_H
   2 #define TREE_WALK_H
   3
   4 #include "cache.h"
   5
   6 struct name_entry {
   7         struct object_id oid;
   8         const char *path;
   9         int pathlen;
  10         unsigned int mode;
  11 };
  12
  13 struct tree_desc {
  14         const void *buffer;
  15         struct name_entry entry;
  16         unsigned int size;
  17 };
  18
  19 static inline const struct object_id *tree_entry_extract(struct tree_desc *desc, const char **pathp, unsigned short *modep)
  20 {
  21         *pathp = desc->entry.path;
  22         *modep = desc->entry.mode;
  23         return &desc->entry.oid;
  24 }
  25
  26 static inline int tree_entry_len(const struct name_entry *ne)
  27 {
  28         return ne->pathlen;
  29 }
  30
  31 /*
  32  * The _gently versions of these functions warn and return false on a
  33  * corrupt tree entry rather than dying,
  34  */
  35
  36 void update_tree_entry(struct tree_desc *);
  37 int update_tree_entry_gently(struct tree_desc *);
  38 void init_tree_desc(struct tree_desc *desc, const void *buf, unsigned long size);
  39 int init_tree_desc_gently(struct tree_desc *desc, const void *buf, unsigned long size);
  40
  41 /*
  42  * Helper function that does both tree_entry_extract() and update_tree_entry()
  43  * and returns true for success
  44  */
  45 int tree_entry(struct tree_desc *, struct name_entry *);
  46 int tree_entry_gently(struct tree_desc *, struct name_entry *);
  47
  48 void *fill_tree_descriptor(struct repository *r,
  49                            struct tree_desc *desc,
  50                            const struct object_id *oid);
  51
  52 struct traverse_info;
  53 typedef int (*traverse_callback_t)(int n, unsigned long mask, unsigned long dirmask, struct name_entry *entry, struct traverse_info *);
  54 int traverse_trees(struct index_state *istate, int n, struct tree_desc *t, struct traverse_info *info);
  55
  56 enum get_oid_result get_tree_entry_follow_symlinks(struct repository *r, struct object_id *tree_oid, const char *name, struct object_id *result, struct strbuf *result_path, unsigned short *mode);
  57
  58 struct traverse_info {
  59         const char *traverse_path;
  60         struct traverse_info *prev;
  61         struct name_entry name;
  62         int pathlen;
  63         struct pathspec *pathspec;
  64
  65         unsigned long df_conflicts;
  66         traverse_callback_t fn;
  67         void *data;
  68         int show_all_errors;
  69 };
  70
  71 int get_tree_entry(struct repository *, const struct object_id *, const char *, struct object_id *, unsigned short *);
  72 char *make_traverse_path(char *path, const struct traverse_info *info, const struct name_entry *n);
  73 void setup_traverse_info(struct traverse_info *info, const char *base);
  74
  75 static inline int traverse_path_len(const struct traverse_info *info, const struct name_entry *n)
  76 {
  77         return info->pathlen + tree_entry_len(n);
  78 }
  79
  80 /* in general, positive means "kind of interesting" */
  81 enum interesting {
  82         all_entries_not_interesting = -1, /* no, and no subsequent entries will be either */
  83         entry_not_interesting = 0,
  84         entry_interesting = 1,
  85         all_entries_interesting = 2 /* yes, and all subsequent entries will be */
  86 };
  87
  88 enum interesting tree_entry_interesting(struct index_state *istate,
  89                                         const struct name_entry *,
  90                                         struct strbuf *, int,
  91                                         const struct pathspec *ps);
  92
  93 #endif