builtin-bundle.c - use stream buffered input for rev-list

diff --git a/read-cache.c b/read-cache.c
index ad4e18753777a951e396116c989896f393d56e47..865369df0e7210446853c6704f68f12a8872124b 100644 (file)
--- a/read-cache.c
+++ b/read-cache.c
@@ -166,7 +166,7 @@ static int ce_match_stat_basic(struct cache_entry *ce, struct stat *st)
                changed |= MTIME_CHANGED;
        if (ce->ce_ctime.nsec != htonl(st->st_ctim.tv_nsec))
                changed |= CTIME_CHANGED;
-#endif 
+#endif
 
        if (ce->ce_uid != htonl(st->st_uid) ||
            ce->ce_gid != htonl(st->st_gid))
@@ -350,9 +350,37 @@ int remove_file_from_index(struct index_state *istate, const char *path)
        return 0;
 }
 
+static int compare_name(struct cache_entry *ce, const char *path, int namelen)
+{
+       return namelen != ce_namelen(ce) || memcmp(path, ce->name, namelen);
+}
+
+static int index_name_pos_also_unmerged(struct index_state *istate,
+       const char *path, int namelen)
+{
+       int pos = index_name_pos(istate, path, namelen);
+       struct cache_entry *ce;
+
+       if (pos >= 0)
+               return pos;
+
+       /* maybe unmerged? */
+       pos = -1 - pos;
+       if (pos >= istate->cache_nr ||
+                       compare_name((ce = istate->cache[pos]), path, namelen))
+               return -1;
+
+       /* order of preference: stage 2, 1, 3 */
+       if (ce_stage(ce) == 1 && pos + 1 < istate->cache_nr &&
+                       ce_stage((ce = istate->cache[pos + 1])) == 2 &&
+                       !compare_name(ce, path, namelen))
+               pos++;
+       return pos;
+}
+
 int add_file_to_index(struct index_state *istate, const char *path, int verbose)
 {
-       int size, namelen;
+       int size, namelen, pos;
        struct stat st;
        struct cache_entry *ce;
 
@@ -380,12 +408,21 @@ int add_file_to_index(struct index_state *istate, const char *path, int verbose)
                 * from it, otherwise assume unexecutable regular file.
                 */
                struct cache_entry *ent;
-               int pos = index_name_pos(istate, path, namelen);
+               int pos = index_name_pos_also_unmerged(istate, path, namelen);
 
                ent = (0 <= pos) ? istate->cache[pos] : NULL;
                ce->ce_mode = ce_mode_from_stat(ent, st.st_mode);
        }
 
+       pos = index_name_pos(istate, ce->name, namelen);
+       if (0 <= pos &&
+           !ce_stage(istate->cache[pos]) &&
+           !ie_modified(istate, istate->cache[pos], &st, 1)) {
+               /* Nothing changed, really */
+               free(ce);
+               return 0;
+       }
+
        if (index_path(ce->sha1, path, &st, 1))
                die("unable to index file %s", path);
        if (add_index_entry(istate, ce, ADD_CACHE_OK_TO_ADD|ADD_CACHE_OK_TO_REPLACE))
@@ -597,7 +634,7 @@ static int has_dir_name(struct index_state *istate,
  * is being added, or we already have path and path/file is being
  * added.  Either one would result in a nonsense tree that has path
  * twice when git-write-tree tries to write it out.  Prevent it.
- * 
+ *
  * If ok-to-replace is specified, we remove the conflicting entries
  * from the cache so the caller should recompute the insert position.
  * When this happens, we return non-zero.
@@ -628,7 +665,7 @@ static int check_file_directory_conflict(struct index_state *istate,
        return retval + has_dir_name(istate, ce, pos, ok_to_replace);
 }
 
-int add_index_entry(struct index_state *istate, struct cache_entry *ce, int option)
+static int add_index_entry_with_check(struct index_state *istate, struct cache_entry *ce, int option)
 {
        int pos;
        int ok_to_add = option & ADD_CACHE_OK_TO_ADD;
@@ -670,6 +707,22 @@ int add_index_entry(struct index_state *istate, struct cache_entry *ce, int opti
                pos = index_name_pos(istate, ce->name, ntohs(ce->ce_flags));
                pos = -pos-1;
        }
+       return pos + 1;
+}
+
+int add_index_entry(struct index_state *istate, struct cache_entry *ce, int option)
+{
+       int pos;
+
+       if (option & ADD_CACHE_JUST_APPEND)
+               pos = istate->cache_nr;
+       else {
+               int ret;
+               ret = add_index_entry_with_check(istate, ce, option);
+               if (ret <= 0)
+                       return ret;
+               pos = ret - 1;
+       }
 
        /* Make sure the array is big enough .. */
        if (istate->cache_nr == istate->cache_alloc) {
@@ -680,7 +733,7 @@ int add_index_entry(struct index_state *istate, struct cache_entry *ce, int opti
 
        /* Add it in.. */
        istate->cache_nr++;
-       if (istate->cache_nr > pos)
+       if (istate->cache_nr > pos + 1)
                memmove(istate->cache + pos + 1,
                        istate->cache + pos,
                        (istate->cache_nr - pos - 1) * sizeof(ce));
@@ -970,8 +1023,8 @@ static int ce_write(SHA_CTX *context, int fd, void *data, unsigned int len)
                write_buffer_len = buffered;
                len -= partial;
                data = (char *) data + partial;
-       }
-       return 0;
+       }
+       return 0;
 }
 
 static int write_index_ext_header(SHA_CTX *context, int fd,
@@ -1037,7 +1090,7 @@ static void ce_smudge_racily_clean_entry(struct cache_entry *ce)
                 * size to zero here, then the object name recorded
                 * in index is the 6-byte file but the cached stat information
                 * becomes zero --- which would then match what we would
-                * obtain from the filesystem next time we stat("frotz"). 
+                * obtain from the filesystem next time we stat("frotz").
                 *
                 * However, the second update-index, before calling
                 * this function, notices that the cached size is 6