Add git-zip-tree

diff --git a/sha1_name.c b/sha1_name.c
index 4376cb3928d068b27618b4d41d3903f536582419..3f6b77ccfadab14453a76b6654b50b186c9f5b25 100644 (file)
--- a/sha1_name.c
+++ b/sha1_name.c
@@ -84,7 +84,7 @@ static int find_short_packed_object(int len, const unsigned char *match, unsigne
                        int cmp;
 
                        nth_packed_object_sha1(p, mid, now);
-                       cmp = memcmp(match, now, 20);
+                       cmp = hashcmp(match, now);
                        if (!cmp) {
                                first = mid;
                                break;
@@ -103,10 +103,10 @@ static int find_short_packed_object(int len, const unsigned char *match, unsigne
                                    !match_sha(len, match, next)) {
                                        /* unique within this pack */
                                        if (!found) {
-                                               memcpy(found_sha1, now, 20);
+                                               hashcpy(found_sha1, now);
                                                found++;
                                        }
-                                       else if (memcmp(found_sha1, now, 20)) {
+                                       else if (hashcmp(found_sha1, now)) {
                                                found = 2;
                                                break;
                                        }
@@ -120,7 +120,7 @@ static int find_short_packed_object(int len, const unsigned char *match, unsigne
                }
        }
        if (found == 1)
-               memcpy(sha1, found_sha1, 20);
+               hashcpy(sha1, found_sha1);
        return found;
 }
 
@@ -140,13 +140,13 @@ static int find_unique_short_object(int len, char *canonical,
        if (1 < has_unpacked || 1 < has_packed)
                return SHORT_NAME_AMBIGUOUS;
        if (has_unpacked != has_packed) {
-               memcpy(sha1, (has_packed ? packed_sha1 : unpacked_sha1), 20);
+               hashcpy(sha1, (has_packed ? packed_sha1 : unpacked_sha1));
                return 0;
        }
        /* Both have unique ones -- do they match? */
-       if (memcmp(packed_sha1, unpacked_sha1, 20))
+       if (hashcmp(packed_sha1, unpacked_sha1))
                return SHORT_NAME_AMBIGUOUS;
-       memcpy(sha1, packed_sha1, 20);
+       hashcpy(sha1, packed_sha1);
        return 0;
 }
 
@@ -159,7 +159,7 @@ static int get_short_sha1(const char *name, int len, unsigned char *sha1,
 
        if (len < MINIMUM_ABBREV)
                return -1;
-       memset(res, 0, 20);
+       hashclr(res);
        memset(canonical, 'x', 40);
        for (i = 0; i < len ;i++) {
                unsigned char c = name[i];
@@ -191,9 +191,9 @@ const char *find_unique_abbrev(const unsigned char *sha1, int len)
        int status, is_null;
        static char hex[41];
 
-       is_null = !memcmp(sha1, null_sha1, 20);
+       is_null = is_null_sha1(sha1);
        memcpy(hex, sha1_to_hex(sha1), 40);
-       if (len == 40)
+       if (len == 40 || !len)
                return hex;
        while (len < 40) {
                unsigned char sha1_ret[20];
@@ -249,7 +249,7 @@ static int get_sha1_basic(const char *str, int len, unsigned char *sha1)
        static const char *warning = "warning: refname '%.*s' is ambiguous.\n";
        const char **p, *pathname;
        char *real_path = NULL;
-       int refs_found = 0, at_mark;
+       int refs_found = 0, am;
        unsigned long at_time = (unsigned long)-1;
        unsigned char *this_result;
        unsigned char sha1_from_ref[20];
@@ -257,16 +257,15 @@ static int get_sha1_basic(const char *str, int len, unsigned char *sha1)
        if (len == 40 && !get_sha1_hex(str, sha1))
                return 0;
 
-       /* At a given period of time? "@2 hours ago" */
-       for (at_mark = 1; at_mark < len; at_mark++) {
-               if (str[at_mark] == '@') {
-                       int date_len = len - at_mark - 1;
+       /* At a given period of time? "@{2 hours ago}" */
+       for (am = 1; am < len - 1; am++) {
+               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 + at_mark + 1, date_len);
-                       date_spec[date_len] = 0;
+                       strlcpy(date_spec, str + am + 2, date_len + 1);
                        at_time = approxidate(date_spec);
                        free(date_spec);
-                       len = at_mark;
+                       len = am;
                        break;
                }
        }
@@ -321,13 +320,13 @@ static int get_parent(const char *name, int len,
        if (parse_commit(commit))
                return -1;
        if (!idx) {
-               memcpy(result, commit->object.sha1, 20);
+               hashcpy(result, commit->object.sha1);
                return 0;
        }
        p = commit->parents;
        while (p) {
                if (!--idx) {
-                       memcpy(result, p->item->object.sha1, 20);
+                       hashcpy(result, p->item->object.sha1);
                        return 0;
                }
                p = p->next;
@@ -348,9 +347,9 @@ static int get_nth_ancestor(const char *name, int len,
 
                if (!commit || parse_commit(commit) || !commit->parents)
                        return -1;
-               memcpy(sha1, commit->parents->item->object.sha1, 20);
+               hashcpy(sha1, commit->parents->item->object.sha1);
        }
-       memcpy(result, sha1, 20);
+       hashcpy(result, sha1);
        return 0;
 }
 
@@ -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 = OBJ_COMMIT;
        else if (!strncmp(tree_type, sp, 4) && sp[4] == '}')
-               type_string = tree_type;
+               expected_type = OBJ_TREE;
        else if (!strncmp(blob_type, sp, 4) && sp[4] == '}')
-               type_string = blob_type;
+               expected_type = OBJ_BLOB;
        else if (sp[0] == '}')
-               type_string = NULL;
+               expected_type = OBJ_NONE;
        else
                return -1;
 
@@ -398,11 +397,11 @@ 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;
-               memcpy(sha1, o->sha1, 20);
+               hashcpy(sha1, o->sha1);
        }
        else {
                /* At this point, the syntax look correct, so
@@ -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) {
-                               memcpy(sha1, o->sha1, 20);
+                       if (o->type == expected_type) {
+                               hashcpy(sha1, o->sha1);
                                return 0;
                        }
-                       if (o->type == tag_type)
+                       if (o->type == OBJ_TAG)
                                o = ((struct tag*) o)->tagged;
-                       else if (o->type == commit_type)
+                       else if (o->type == OBJ_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);
                }
@@ -482,7 +481,7 @@ static int get_sha1_1(const char *name, int len, unsigned char *sha1)
  */
 int get_sha1(const char *name, unsigned char *sha1)
 {
-       int ret;
+       int ret, bracket_depth;
        unsigned unused;
        int namelen = strlen(name);
        const char *cp;
@@ -521,15 +520,22 @@ int get_sha1(const char *name, unsigned char *sha1)
                            memcmp(ce->name, cp, namelen))
                                break;
                        if (ce_stage(ce) == stage) {
-                               memcpy(sha1, ce->sha1, 20);
+                               hashcpy(sha1, ce->sha1);
                                return 0;
                        }
                        pos++;
                }
                return -1;
        }
-       cp = strchr(name, ':');
-       if (cp) {
+       for (cp = name, bracket_depth = 0; *cp; cp++) {
+               if (*cp == '{')
+                       bracket_depth++;
+               else if (bracket_depth && *cp == '}')
+                       bracket_depth--;
+               else if (!bracket_depth && *cp == ':')
+                       break;
+       }
+       if (*cp == ':') {
                unsigned char tree_sha1[20];
                if (!get_sha1_1(name, cp-name, tree_sha1))
                        return get_tree_entry(tree_sha1, cp+1, sha1,