Andrew's git - gitweb.git/blob

   1#include "cache.h"
   2#include "refs.h"
   3#include "tag.h"
   4#include "commit.h"
   5#include "blob.h"
   6#include "diff.h"
   7#include "revision.h"
   8#include "reachable.h"
   9#include "cache-tree.h"
  10#include "progress.h"
  11#include "list-objects.h"
  12
  13struct connectivity_progress {
  14        struct progress *progress;
  15        unsigned long count;
  16};
  17
  18static void update_progress(struct connectivity_progress *cp)
  19{
  20        cp->count++;
  21        if ((cp->count & 1023) == 0)
  22                display_progress(cp->progress, cp->count);
  23}
  24
  25static int add_one_reflog_ent(unsigned char *osha1, unsigned char *nsha1,
  26                const char *email, unsigned long timestamp, int tz,
  27                const char *message, void *cb_data)
  28{
  29        struct object *object;
  30        struct rev_info *revs = (struct rev_info *)cb_data;
  31
  32        object = parse_object(osha1);
  33        if (object)
  34                add_pending_object(revs, object, "");
  35        object = parse_object(nsha1);
  36        if (object)
  37                add_pending_object(revs, object, "");
  38        return 0;
  39}
  40
  41static int add_one_ref(const char *path, const unsigned char *sha1, int flag, void *cb_data)
  42{
  43        struct object *object = parse_object_or_die(sha1, path);
  44        struct rev_info *revs = (struct rev_info *)cb_data;
  45
  46        add_pending_object(revs, object, "");
  47
  48        return 0;
  49}
  50
  51static int add_one_reflog(const char *path, const unsigned char *sha1, int flag, void *cb_data)
  52{
  53        for_each_reflog_ent(path, add_one_reflog_ent, cb_data);
  54        return 0;
  55}
  56
  57static void add_one_tree(const unsigned char *sha1, struct rev_info *revs)
  58{
  59        struct tree *tree = lookup_tree(sha1);
  60        if (tree)
  61                add_pending_object(revs, &tree->object, "");
  62}
  63
  64static void add_cache_tree(struct cache_tree *it, struct rev_info *revs)
  65{
  66        int i;
  67
  68        if (it->entry_count >= 0)
  69                add_one_tree(it->sha1, revs);
  70        for (i = 0; i < it->subtree_nr; i++)
  71                add_cache_tree(it->down[i]->cache_tree, revs);
  72}
  73
  74static void add_cache_refs(struct rev_info *revs)
  75{
  76        int i;
  77
  78        read_cache();
  79        for (i = 0; i < active_nr; i++) {
  80                /*
  81                 * The index can contain blobs and GITLINKs, GITLINKs are hashes
  82                 * that don't actually point to objects in the repository, it's
  83                 * almost guaranteed that they are NOT blobs, so we don't call
  84                 * lookup_blob() on them, to avoid populating the hash table
  85                 * with invalid information
  86                 */
  87                if (S_ISGITLINK(active_cache[i]->ce_mode))
  88                        continue;
  89
  90                lookup_blob(active_cache[i]->sha1);
  91                /*
  92                 * We could add the blobs to the pending list, but quite
  93                 * frankly, we don't care. Once we've looked them up, and
  94                 * added them as objects, we've really done everything
  95                 * there is to do for a blob
  96                 */
  97        }
  98        if (active_cache_tree)
  99                add_cache_tree(active_cache_tree, revs);
 100}
 101
 102/*
 103 * The traversal will have already marked us as SEEN, so we
 104 * only need to handle any progress reporting here.
 105 */
 106static void mark_object(struct object *obj, const struct name_path *path,
 107                        const char *name, void *data)
 108{
 109        update_progress(data);
 110}
 111
 112static void mark_commit(struct commit *c, void *data)
 113{
 114        mark_object(&c->object, NULL, NULL, data);
 115}
 116
 117void mark_reachable_objects(struct rev_info *revs, int mark_reflog,
 118                            struct progress *progress)
 119{
 120        struct connectivity_progress cp;
 121
 122        /*
 123         * Set up revision parsing, and mark us as being interested
 124         * in all object types, not just commits.
 125         */
 126        revs->tag_objects = 1;
 127        revs->blob_objects = 1;
 128        revs->tree_objects = 1;
 129
 130        /* Add all refs from the index file */
 131        add_cache_refs(revs);
 132
 133        /* Add all external refs */
 134        for_each_ref(add_one_ref, revs);
 135
 136        /* detached HEAD is not included in the list above */
 137        head_ref(add_one_ref, revs);
 138
 139        /* Add all reflog info */
 140        if (mark_reflog)
 141                for_each_reflog(add_one_reflog, revs);
 142
 143        cp.progress = progress;
 144        cp.count = 0;
 145
 146        /*
 147         * Set up the revision walk - this will move all commits
 148         * from the pending list to the commit walking list.
 149         */
 150        if (prepare_revision_walk(revs))
 151                die("revision walk setup failed");
 152        traverse_commit_list(revs, mark_commit, mark_object, &cp);
 153        display_progress(cp.progress, cp.count);
 154}