Imported Upstream version 2.12.4

[platform/upstream/git.git] / object.c

diff --git a/object.c b/object.c
index 69fbbbf..e680d88 100644 (file)
--- a/object.c
+++ b/object.c
@@ -33,13 +33,21 @@ const char *typename(unsigned int type)
        return object_type_strings[type];
 }
 
-int type_from_string(const char *str)
+int type_from_string_gently(const char *str, ssize_t len, int gentle)
 {
        int i;
 
+       if (len < 0)
+               len = strlen(str);
+
        for (i = 1; i < ARRAY_SIZE(object_type_strings); i++)
-               if (!strcmp(str, object_type_strings[i]))
+               if (!strncmp(str, object_type_strings[i], len) &&
+                   object_type_strings[i][len] == '\0')
                        return i;
+
+       if (gentle)
+               return -1;
+
        die("invalid object type \"%s\"", str);
 }
 
@@ -50,18 +58,7 @@ int type_from_string(const char *str)
  */
 static unsigned int hash_obj(const unsigned char *sha1, unsigned int n)
 {
-       unsigned int hash;
-
-       /*
-        * Since the sha1 is essentially random, we just take the
-        * required number of bits directly from the first
-        * sizeof(unsigned int) bytes of sha1.  First we have to copy
-        * the bytes into a properly aligned integer.  If we cared
-        * about getting consistent results across architectures, we
-        * would have to call ntohl() here, too.
-        */
-       memcpy(&hash, sha1, sizeof(unsigned int));
-       return hash & (n - 1);
+       return sha1hash(sha1) & (n - 1);
 }
 
 /*
@@ -71,7 +68,7 @@ static unsigned int hash_obj(const unsigned char *sha1, unsigned int n)
  */
 static void insert_obj_hash(struct object *obj, struct object **hash, unsigned int size)
 {
-       unsigned int j = hash_obj(obj->sha1, size);
+       unsigned int j = hash_obj(obj->oid.hash, size);
 
        while (hash[j]) {
                j++;
@@ -95,7 +92,7 @@ struct object *lookup_object(const unsigned char *sha1)
 
        first = i = hash_obj(sha1, obj_hash_size);
        while ((obj = obj_hash[i]) != NULL) {
-               if (!hashcmp(sha1, obj->sha1))
+               if (!hashcmp(sha1, obj->oid.hash))
                        break;
                i++;
                if (i == obj_hash_size)
@@ -107,9 +104,7 @@ struct object *lookup_object(const unsigned char *sha1)
                 * that we do not need to walk the hash table the next
                 * time we look for it.
                 */
-               struct object *tmp = obj_hash[i];
-               obj_hash[i] = obj_hash[first];
-               obj_hash[first] = tmp;
+               SWAP(obj_hash[i], obj_hash[first]);
        }
        return obj;
 }
@@ -148,7 +143,7 @@ void *create_object(const unsigned char *sha1, void *o)
        obj->parsed = 0;
        obj->used = 0;
        obj->flags = 0;
-       hashcpy(obj->sha1, sha1);
+       hashcpy(obj->oid.hash, sha1);
 
        if (obj_hash_size - 1 <= nr_objs * 2)
                grow_object_hash();
@@ -171,7 +166,7 @@ void *object_as_type(struct object *obj, enum object_type type, int quiet)
        else {
                if (!quiet)
                        error("object %s is a %s, not a %s",
-                             sha1_to_hex(obj->sha1),
+                             oid_to_hex(&obj->oid),
                              typename(obj->type), typename(type));
                return NULL;
        }
@@ -311,10 +306,9 @@ int object_list_contains(struct object_list *list, struct object *obj)
  */
 static char object_array_slopbuf[1];
 
-static void add_object_array_with_mode_context(struct object *obj, const char *name,
-                                              struct object_array *array,
-                                              unsigned mode,
-                                              struct object_context *context)
+void add_object_array_with_path(struct object *obj, const char *name,
+                               struct object_array *array,
+                               unsigned mode, const char *path)
 {
        unsigned nr = array->nr;
        unsigned alloc = array->alloc;
@@ -323,7 +317,7 @@ static void add_object_array_with_mode_context(struct object *obj, const char *n
 
        if (nr >= alloc) {
                alloc = (alloc + 32) * 2;
-               objects = xrealloc(objects, alloc * sizeof(*objects));
+               REALLOC_ARRAY(objects, alloc);
                array->alloc = alloc;
                array->objects = objects;
        }
@@ -337,26 +331,27 @@ static void add_object_array_with_mode_context(struct object *obj, const char *n
        else
                entry->name = xstrdup(name);
        entry->mode = mode;
-       entry->context = context;
+       if (path)
+               entry->path = xstrdup(path);
+       else
+               entry->path = NULL;
        array->nr = ++nr;
 }
 
 void add_object_array(struct object *obj, const char *name, struct object_array *array)
 {
-       add_object_array_with_mode(obj, name, array, S_IFINVALID);
+       add_object_array_with_path(obj, name, array, S_IFINVALID, NULL);
 }
 
-void add_object_array_with_mode(struct object *obj, const char *name, struct object_array *array, unsigned mode)
-{
-       add_object_array_with_mode_context(obj, name, array, mode, NULL);
-}
-
-void add_object_array_with_context(struct object *obj, const char *name, struct object_array *array, struct object_context *context)
+/*
+ * Free all memory associated with an entry; the result is
+ * in an unspecified state and should not be examined.
+ */
+static void object_array_release_entry(struct object_array_entry *ent)
 {
-       if (context)
-               add_object_array_with_mode_context(obj, name, array, context->mode, context);
-       else
-               add_object_array_with_mode_context(obj, name, array, S_IFINVALID, context);
+       if (ent->name != object_array_slopbuf)
+               free(ent->name);
+       free(ent->path);
 }
 
 void object_array_filter(struct object_array *array,
@@ -371,13 +366,22 @@ void object_array_filter(struct object_array *array,
                                objects[dst] = objects[src];
                        dst++;
                } else {
-                       if (objects[src].name != object_array_slopbuf)
-                               free(objects[src].name);
+                       object_array_release_entry(&objects[src]);
                }
        }
        array->nr = dst;
 }
 
+void object_array_clear(struct object_array *array)
+{
+       int i;
+       for (i = 0; i < array->nr; i++)
+               object_array_release_entry(&array->objects[i]);
+       free(array->objects);
+       array->objects = NULL;
+       array->nr = array->alloc = 0;
+}
+
 /*
  * Return true iff array already contains an entry with name.
  */
@@ -404,8 +408,7 @@ void object_array_remove_duplicates(struct object_array *array)
                                objects[array->nr] = objects[src];
                        array->nr++;
                } else {
-                       if (objects[src].name != object_array_slopbuf)
-                               free(objects[src].name);
+                       object_array_release_entry(&objects[src]);
                }
        }
 }