Both unpack-trees.c and read-cache.c have their own name_compare()
function, which are identical. And read-cache.c has a
cache_name_compare() function which is nearly identical to
name_compare() [1]. The cache_name_compare() function is not specific
to a cache, other than by being part of cache.h.
Generalize the cache_name_compare() function by renaming it to
name_compare(). Simplify the cache_name_stage_compare() function using
name_compare(). Then change the few instances which used
cache_name_compare() to name_compare() [2].
[1] cache_name_compare() is not identical to name_compare(). The former
returns +1, -1, whereas the latter returns +N, -N. But there is no
place where name_compare() is used that needs the magnitude so this
difference does not alter its behavior.
[2] The instances where cache_name_compare() is used have nothing to do
with a cache. The new name, name_compare(), makes it clear that no
cache is involved.
Signed-off-by: Jeremiah Mahler <jmmahler@xxxxxxxxx>
---
cache.h | 2 +-
dir.c | 3 +--
name-hash.c | 2 +-
read-cache.c | 23 +++++++++++++----------
tree-walk.c | 10 ----------
unpack-trees.c | 11 -----------
6 files changed, 16 insertions(+), 35 deletions(-)
diff --git a/cache.h b/cache.h
index c498a30..e3205fe 100644
--- a/cache.h
+++ b/cache.h
@@ -1027,7 +1027,7 @@ extern int validate_headref(const char *ref);
extern int base_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
extern int df_name_compare(const char *name1, int len1, int mode1, const char *name2, int len2, int mode2);
-extern int cache_name_compare(const char *name1, int len1, const char *name2, int len2);
+extern int name_compare(const char *name1, size_t len1, const char *name2, size_t len2);
extern int cache_name_stage_compare(const char *name1, int len1, int stage1, const char *name2, int len2, int stage2);
extern void *read_object_with_reference(const unsigned char *sha1,
diff --git a/dir.c b/dir.c
index 797805d..e65888d 100644
--- a/dir.c
+++ b/dir.c
@@ -1354,8 +1354,7 @@ static int cmp_name(const void *p1, const void *p2)
const struct dir_entry *e1 = *(const struct dir_entry **)p1;
const struct dir_entry *e2 = *(const struct dir_entry **)p2;
- return cache_name_compare(e1->name, e1->len,
- e2->name, e2->len);
+ return name_compare(e1->name, e1->len, e2->name, e2->len);
}
static struct path_simplify *create_simplify(const char **pathspec)
diff --git a/name-hash.c b/name-hash.c
index be7c4ae..e2bea88 100644
--- a/name-hash.c
+++ b/name-hash.c
@@ -179,7 +179,7 @@ static int same_name(const struct cache_entry *ce, const char *name, int namelen
* Always do exact compare, even if we want a case-ignoring comparison;
* we do the quick exact one first, because it will be the common case.
*/
- if (len == namelen && !cache_name_compare(name, namelen, ce->name, len))
+ if (len == namelen && !name_compare(name, namelen, ce->name, len))
return 1;
if (!icase)
diff --git a/read-cache.c b/read-cache.c
index 9f56d76..158241d 100644
--- a/read-cache.c
+++ b/read-cache.c
@@ -434,18 +434,26 @@ int df_name_compare(const char *name1, int len1, int mode1,
return c1 - c2;
}
-int cache_name_stage_compare(const char *name1, int len1, int stage1, const char *name2, int len2, int stage2)
+int name_compare(const char *name1, size_t len1, const char *name2, size_t len2)
{
- int len = len1 < len2 ? len1 : len2;
- int cmp;
-
- cmp = memcmp(name1, name2, len);
+ size_t min_len = (len1 < len2) ? len1 : len2;
+ int cmp = memcmp(name1, name2, min_len);
if (cmp)
return cmp;
if (len1 < len2)
return -1;
if (len1 > len2)
return 1;
+ return 0;
+}
+
+int cache_name_stage_compare(const char *name1, int len1, int stage1, const char *name2, int len2, int stage2)
+{
+ int cmp;
+
+ cmp = name_compare(name1, len1, name2, len2);
+ if (cmp)
+ return cmp;
if (stage1 < stage2)
return -1;
@@ -454,11 +462,6 @@ int cache_name_stage_compare(const char *name1, int len1, int stage1, const char
return 0;
}
-int cache_name_compare(const char *name1, int len1, const char *name2, int len2)
-{
- return cache_name_stage_compare(name1, len1, 0, name2, len2, 0);
-}
-
static int index_name_stage_pos(const struct index_state *istate, const char *name, int namelen, int stage)
{
int first, last;
diff --git a/tree-walk.c b/tree-walk.c
index 4dc86c7..5dd9a71 100644
--- a/tree-walk.c
+++ b/tree-walk.c
@@ -144,16 +144,6 @@ struct tree_desc_x {
struct tree_desc_skip *skip;
};
-static int name_compare(const char *a, int a_len,
- const char *b, int b_len)
-{
- int len = (a_len < b_len) ? a_len : b_len;
- int cmp = memcmp(a, b, len);
- if (cmp)
- return cmp;
- return (a_len - b_len);
-}
-
static int check_entry_match(const char *a, int a_len, const char *b, int b_len)
{
/*
diff --git a/unpack-trees.c b/unpack-trees.c
index 4a9cdf2..c4a97ca 100644
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -629,17 +629,6 @@ static int unpack_failed(struct unpack_trees_options *o, const char *message)
return -1;
}
-/* NEEDSWORK: give this a better name and share with tree-walk.c */
-static int name_compare(const char *a, int a_len,
- const char *b, int b_len)
-{
- int len = (a_len < b_len) ? a_len : b_len;
- int cmp = memcmp(a, b, len);
- if (cmp)
- return cmp;
- return (a_len - b_len);
-}
-
/*
* The tree traversal is looking at name p. If we have a matching entry,
* return it. If name p is a directory in the index, do not return
--
2.0.0
--
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