git-tar-tree: no more void pointer arithmetic

[git.git] / sha1_name.c

diff --git a/sha1_name.c b/sha1_name.c
index fbbde1c..cd85d1f 100644 (file)
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -262,8 +262,7 @@ static int get_sha1_basic(const char *str, int len, unsigned char *sha1)
                if (str[am] == '@' && str[am+1] == '{' && str[len-1] == '}') {
                        int date_len = len - am - 3;
                        char *date_spec = xmalloc(date_len + 1);
-                       strncpy(date_spec, str + am + 2, date_len);
-                       date_spec[date_len] = 0;
+                       safe_strncpy(date_spec, str + am + 2, date_len + 1);
                        at_time = approxidate(date_spec);
                        free(date_spec);
                        len = am;
@@ -358,7 +357,7 @@ static int peel_onion(const char *name, int len, unsigned char *sha1)
 {
        unsigned char outer[20];
        const char *sp;
-       const char *type_string = NULL;
+       unsigned int expected_type = 0;
        struct object *o;
 
        /*
@@ -382,13 +381,13 @@ static int peel_onion(const char *name, int len, unsigned char *sha1)
 
        sp++; /* beginning of type name, or closing brace for empty */
        if (!strncmp(commit_type, sp, 6) && sp[6] == '}')
-               type_string = commit_type;
+               expected_type = TYPE_COMMIT;
        else if (!strncmp(tree_type, sp, 4) && sp[4] == '}')
-               type_string = tree_type;
+               expected_type = TYPE_TREE;
        else if (!strncmp(blob_type, sp, 4) && sp[4] == '}')
-               type_string = blob_type;
+               expected_type = TYPE_BLOB;
        else if (sp[0] == '}')
-               type_string = NULL;
+               expected_type = TYPE_NONE;
        else
                return -1;
 
@@ -398,7 +397,7 @@ static int peel_onion(const char *name, int len, unsigned char *sha1)
        o = parse_object(outer);
        if (!o)
                return -1;
-       if (!type_string) {
+       if (!expected_type) {
                o = deref_tag(o, name, sp - name - 2);
                if (!o || (!o->parsed && !parse_object(o->sha1)))
                        return -1;
@@ -413,18 +412,18 @@ static int peel_onion(const char *name, int len, unsigned char *sha1)
                while (1) {
                        if (!o || (!o->parsed && !parse_object(o->sha1)))
                                return -1;
-                       if (o->type == type_string) {
+                       if (o->type == expected_type) {
                                memcpy(sha1, o->sha1, 20);
                                return 0;
                        }
-                       if (o->type == tag_type)
+                       if (o->type == TYPE_TAG)
                                o = ((struct tag*) o)->tagged;
-                       else if (o->type == commit_type)
+                       else if (o->type == TYPE_COMMIT)
                                o = &(((struct commit *) o)->tree->object);
                        else
                                return error("%.*s: expected %s type, but the object dereferences to %s type",
-                                            len, name, type_string,
-                                            o->type);
+                                            len, name, typename(expected_type),
+                                            typename(o->type));
                        if (!o->parsed)
                                parse_object(o->sha1);
                }