Merge branch 'nd/resolve-ref'
[gitweb.git] / tree-walk.c
index 808bb55ba3f21d113e6358f6874e2e20cb33bbea..f82dba6a1f43bf2a259952a4fd6db94d6335deb7 100644 (file)
@@ -116,7 +116,7 @@ void setup_traverse_info(struct traverse_info *info, const char *base)
 
 char *make_traverse_path(char *path, const struct traverse_info *info, const struct name_entry *n)
 {
-       int len = tree_entry_len(n->path, n->sha1);
+       int len = tree_entry_len(n);
        int pathlen = info->pathlen;
 
        path[pathlen + len] = 0;
@@ -126,7 +126,7 @@ char *make_traverse_path(char *path, const struct traverse_info *info, const str
                        break;
                path[--pathlen] = '/';
                n = &info->name;
-               len = tree_entry_len(n->path, n->sha1);
+               len = tree_entry_len(n);
                info = info->prev;
                pathlen -= len;
        }
@@ -253,7 +253,7 @@ static void extended_entry_extract(struct tree_desc_x *t,
         * The caller wants "first" from this tree, or nothing.
         */
        path = a->path;
-       len = tree_entry_len(a->path, a->sha1);
+       len = tree_entry_len(a);
        switch (check_entry_match(first, first_len, path, len)) {
        case -1:
                entry_clear(a);
@@ -271,7 +271,7 @@ static void extended_entry_extract(struct tree_desc_x *t,
        while (probe.size) {
                entry_extract(&probe, a);
                path = a->path;
-               len = tree_entry_len(a->path, a->sha1);
+               len = tree_entry_len(a);
                switch (check_entry_match(first, first_len, path, len)) {
                case -1:
                        entry_clear(a);
@@ -344,7 +344,7 @@ int traverse_trees(int n, struct tree_desc *t, struct traverse_info *info)
                unsigned long mask, dirmask;
                const char *first = NULL;
                int first_len = 0;
-               struct name_entry *e;
+               struct name_entry *e = NULL;
                int len;
 
                for (i = 0; i < n; i++) {
@@ -362,7 +362,7 @@ int traverse_trees(int n, struct tree_desc *t, struct traverse_info *info)
                        e = entry + i;
                        if (!e->path)
                                continue;
-                       len = tree_entry_len(e->path, e->sha1);
+                       len = tree_entry_len(e);
                        if (!first) {
                                first = e->path;
                                first_len = len;
@@ -381,7 +381,7 @@ int traverse_trees(int n, struct tree_desc *t, struct traverse_info *info)
                                /* Cull the ones that are not the earliest */
                                if (!e->path)
                                        continue;
-                               len = tree_entry_len(e->path, e->sha1);
+                               len = tree_entry_len(e);
                                if (name_compare(e->path, len, first, first_len))
                                        entry_clear(e);
                        }
@@ -434,8 +434,8 @@ static int find_tree_entry(struct tree_desc *t, const char *name, unsigned char
                int entrylen, cmp;
 
                sha1 = tree_entry_extract(t, &entry, mode);
+               entrylen = tree_entry_len(&t->entry);
                update_tree_entry(t);
-               entrylen = tree_entry_len(entry, sha1);
                if (entrylen > namelen)
                        continue;
                cmp = memcmp(name, entry, entrylen);
@@ -465,7 +465,6 @@ int get_tree_entry(const unsigned char *tree_sha1, const char *name, unsigned ch
        int retval;
        void *tree;
        unsigned long size;
-       struct tree_desc t;
        unsigned char root[20];
 
        tree = read_object_with_reference(tree_sha1, tree_type, &size, root);
@@ -478,8 +477,13 @@ int get_tree_entry(const unsigned char *tree_sha1, const char *name, unsigned ch
                return 0;
        }
 
-       init_tree_desc(&t, tree, size);
-       retval = find_tree_entry(&t, name, sha1, mode);
+       if (!size) {
+               retval = -1;
+       } else {
+               struct tree_desc t;
+               init_tree_desc(&t, tree, size);
+               retval = find_tree_entry(&t, name, sha1, mode);
+       }
        free(tree);
        return retval;
 }
@@ -549,7 +553,7 @@ static int match_entry(const struct name_entry *entry, int pathlen,
        return 0;
 }
 
-static int match_dir_prefix(const char *base, int baselen,
+static int match_dir_prefix(const char *base,
                            const char *match, int matchlen)
 {
        if (strncmp(base, match, matchlen))
@@ -573,30 +577,26 @@ static int match_dir_prefix(const char *base, int baselen,
  *
  * Pre-condition: either baselen == base_offset (i.e. empty path)
  * or base[baselen-1] == '/' (i.e. with trailing slash).
- *
- * Return:
- *  - 2 for "yes, and all subsequent entries will be"
- *  - 1 for yes
- *  - zero for no
- *  - negative for "no, and no subsequent entries will be either"
  */
-int tree_entry_interesting(const struct name_entry *entry,
-                          struct strbuf *base, int base_offset,
-                          const struct pathspec *ps)
+enum interesting tree_entry_interesting(const struct name_entry *entry,
+                                       struct strbuf *base, int base_offset,
+                                       const struct pathspec *ps)
 {
        int i;
        int pathlen, baselen = base->len - base_offset;
-       int never_interesting = ps->has_wildcard ? 0 : -1;
+       int never_interesting = ps->has_wildcard ?
+               entry_not_interesting : all_entries_not_interesting;
 
        if (!ps->nr) {
                if (!ps->recursive || ps->max_depth == -1)
-                       return 2;
-               return !!within_depth(base->buf + base_offset, baselen,
-                                     !!S_ISDIR(entry->mode),
-                                     ps->max_depth);
+                       return all_entries_interesting;
+               return within_depth(base->buf + base_offset, baselen,
+                                   !!S_ISDIR(entry->mode),
+                                   ps->max_depth) ?
+                       entry_interesting : entry_not_interesting;
        }
 
-       pathlen = tree_entry_len(entry->path, entry->sha1);
+       pathlen = tree_entry_len(entry);
 
        for (i = ps->nr - 1; i >= 0; i--) {
                const struct pathspec_item *item = ps->items+i;
@@ -606,42 +606,43 @@ int tree_entry_interesting(const struct name_entry *entry,
 
                if (baselen >= matchlen) {
                        /* If it doesn't match, move along... */
-                       if (!match_dir_prefix(base_str, baselen, match, matchlen))
+                       if (!match_dir_prefix(base_str, match, matchlen))
                                goto match_wildcards;
 
                        if (!ps->recursive || ps->max_depth == -1)
-                               return 2;
+                               return all_entries_interesting;
 
-                       return !!within_depth(base_str + matchlen + 1,
-                                             baselen - matchlen - 1,
-                                             !!S_ISDIR(entry->mode),
-                                             ps->max_depth);
+                       return within_depth(base_str + matchlen + 1,
+                                           baselen - matchlen - 1,
+                                           !!S_ISDIR(entry->mode),
+                                           ps->max_depth) ?
+                               entry_interesting : entry_not_interesting;
                }
 
-               /* Does the base match? */
-               if (!strncmp(base_str, match, baselen)) {
+               /* Either there must be no base, or the base must match. */
+               if (baselen == 0 || !strncmp(base_str, match, baselen)) {
                        if (match_entry(entry, pathlen,
                                        match + baselen, matchlen - baselen,
                                        &never_interesting))
-                               return 1;
+                               return entry_interesting;
 
-                       if (ps->items[i].use_wildcard) {
+                       if (item->use_wildcard) {
                                if (!fnmatch(match + baselen, entry->path, 0))
-                                       return 1;
+                                       return entry_interesting;
 
                                /*
                                 * Match all directories. We'll try to
                                 * match files later on.
                                 */
                                if (ps->recursive && S_ISDIR(entry->mode))
-                                       return 1;
+                                       return entry_interesting;
                        }
 
                        continue;
                }
 
 match_wildcards:
-               if (!ps->items[i].use_wildcard)
+               if (!item->use_wildcard)
                        continue;
 
                /*
@@ -653,7 +654,7 @@ int tree_entry_interesting(const struct name_entry *entry,
 
                if (!fnmatch(match, base->buf + base_offset, 0)) {
                        strbuf_setlen(base, base_offset + baselen);
-                       return 1;
+                       return entry_interesting;
                }
                strbuf_setlen(base, base_offset + baselen);
 
@@ -662,7 +663,7 @@ int tree_entry_interesting(const struct name_entry *entry,
                 * later on.
                 */
                if (ps->recursive && S_ISDIR(entry->mode))
-                       return 1;
+                       return entry_interesting;
        }
        return never_interesting; /* No matches */
 }