Andrew's git - gitweb.git/blob

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