attr.c: extract read_index_data() as read_blob_data_from_index()

Extract the read_index_data() function from attr.c and move it to
read-cache.c; rename it to read_blob_data_from_index() and update
the function signature of it to align better with index/cache API
functions.

This allows for reusing the function in convert.c later.

Signed-off-by: Lukas Fleischer <git@cryptocrack.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/attr.c b/attr.c
index 23be4abf44d0b00d0fc1943f4038a1fc85028f70..243d60ffa9a6a097514ddfeb74c98ae7bb30f35c 100644 (file)
--- a/attr.c
+++ b/attr.c
@@ -381,46 +381,13 @@ static struct attr_stack *read_attr_from_file(const char *path, int macro_ok)
        return res;
 }
 
-static void *read_index_data(const char *path)
-{
-       int pos, len;
-       unsigned long sz;
-       enum object_type type;
-       void *data;
-       struct index_state *istate = use_index ? use_index : &the_index;
-
-       len = strlen(path);
-       pos = index_name_pos(istate, path, len);
-       if (pos < 0) {
-               /*
-                * We might be in the middle of a merge, in which
-                * case we would read stage #2 (ours).
-                */
-               int i;
-               for (i = -pos - 1;
-                    (pos < 0 && i < istate->cache_nr &&
-                     !strcmp(istate->cache[i]->name, path));
-                    i++)
-                       if (ce_stage(istate->cache[i]) == 2)
-                               pos = i;
-       }
-       if (pos < 0)
-               return NULL;
-       data = read_sha1_file(istate->cache[pos]->sha1, &type, &sz);
-       if (!data || type != OBJ_BLOB) {
-               free(data);
-               return NULL;
-       }
-       return data;
-}
-
 static struct attr_stack *read_attr_from_index(const char *path, int macro_ok)
 {
        struct attr_stack *res;
        char *buf, *sp;
        int lineno = 0;
 
-       buf = read_index_data(path);
+       buf = read_blob_data_from_index(use_index ? use_index : &the_index, path);
        if (!buf)
                return NULL;
 

diff --git a/cache.h b/cache.h
index 3622e18415ee407d59e6270424d635b5f1df126c..5d66c74f6aa3ab0c26e62a668d25a94d0d9bfde7 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -307,6 +307,7 @@ extern void free_name_hash(struct index_state *istate);
 #define resolve_undo_clear() resolve_undo_clear_index(&the_index)
 #define unmerge_cache_entry_at(at) unmerge_index_entry_at(&the_index, at)
 #define unmerge_cache(pathspec) unmerge_index(&the_index, pathspec)
+#define read_blob_data_from_cache(path) read_blob_data_from_index(&the_index, (path))
 #endif
 
 enum object_type {
@@ -452,6 +453,7 @@ extern int add_file_to_index(struct index_state *, const char *path, int flags);
 extern struct cache_entry *make_cache_entry(unsigned int mode, const unsigned char *sha1, const char *path, int stage, int refresh);
 extern int ce_same_name(struct cache_entry *a, struct cache_entry *b);
 extern int index_name_is_other(const struct index_state *, const char *, int);
+extern void *read_blob_data_from_index(struct index_state *, const char *);
 
 /* do stat comparison even if CE_VALID is true */
 #define CE_MATCH_IGNORE_VALID          01

diff --git a/read-cache.c b/read-cache.c
index b4d08254d656117960d45158bcde695ceac33254..48d87e83ed062f566800256560272bbadc6492d7 100644 (file)
--- a/read-cache.c
+++ b/read-cache.c
@@ -1895,3 +1895,35 @@ int index_name_is_other(const struct index_state *istate, const char *name,
        }
        return 1;
 }
+
+void *read_blob_data_from_index(struct index_state *istate, const char *path)
+{
+       int pos, len;
+       unsigned long sz;
+       enum object_type type;
+       void *data;
+
+       len = strlen(path);
+       pos = index_name_pos(istate, path, len);
+       if (pos < 0) {
+               /*
+                * We might be in the middle of a merge, in which
+                * case we would read stage #2 (ours).
+                */
+               int i;
+               for (i = -pos - 1;
+                    (pos < 0 && i < istate->cache_nr &&
+                     !strcmp(istate->cache[i]->name, path));
+                    i++)
+                       if (ce_stage(istate->cache[i]) == 2)
+                               pos = i;
+       }
+       if (pos < 0)
+               return NULL;
+       data = read_sha1_file(istate->cache[pos]->sha1, &type, &sz);
+       if (!data || type != OBJ_BLOB) {
+               free(data);
+               return NULL;
+       }
+       return data;
+}