t4204-patch-id.sh: use the $( ... ) construct for command substitution

diff --git a/builtin/describe.c b/builtin/describe.c
index 7db43dae1be95e86c21249d9150fc8553c367527..24d740c8b1705f9c8993bd808c9a618acecc300c 100644 (file)
--- a/builtin/describe.c
+++ b/builtin/describe.c
@@ -6,7 +6,7 @@
 #include "exec_cmd.h"
 #include "parse-options.h"
 #include "diff.h"
-#include "hash.h"
+#include "hashmap.h"
 #include "argv-array.h"
 
 #define SEEN           (1u << 0)
@@ -25,7 +25,7 @@ static int longformat;
 static int first_parent;
 static int abbrev = -1; /* unspecified */
 static int max_candidates = 10;
-static struct hash_table names;
+static struct hashmap names;
 static int have_util;
 static const char *pattern;
 static int always;
@@ -37,7 +37,7 @@ static const char *diff_index_args[] = {
 };
 
 struct commit_name {
-       struct commit_name *next;
+       struct hashmap_entry entry;
        unsigned char peeled[20];
        struct tag *tag;
        unsigned prio:2; /* annotated tag = 2, tag = 1, head = 0 */
@@ -50,6 +50,12 @@ static const char *prio_names[] = {
        "head", "lightweight", "annotated",
 };
 
+static int commit_name_cmp(const struct commit_name *cn1,
+               const struct commit_name *cn2, const void *peeled)
+{
+       return hashcmp(cn1->peeled, peeled ? peeled : cn2->peeled);
+}
+
 static inline unsigned int hash_sha1(const unsigned char *sha1)
 {
        unsigned int hash;
@@ -59,21 +65,9 @@ static inline unsigned int hash_sha1(const unsigned char *sha1)
 
 static inline struct commit_name *find_commit_name(const unsigned char *peeled)
 {
-       struct commit_name *n = lookup_hash(hash_sha1(peeled), &names);
-       while (n && !!hashcmp(peeled, n->peeled))
-               n = n->next;
-       return n;
-}
-
-static int set_util(void *chain, void *data)
-{
-       struct commit_name *n;
-       for (n = chain; n; n = n->next) {
-               struct commit *c = lookup_commit_reference_gently(n->peeled, 1);
-               if (c)
-                       c->util = n;
-       }
-       return 0;
+       struct commit_name key;
+       hashmap_entry_init(&key, hash_sha1(peeled));
+       return hashmap_get(&names, &key, peeled);
 }
 
 static int replace_name(struct commit_name *e,
@@ -118,16 +112,10 @@ static void add_to_known_names(const char *path,
        struct tag *tag = NULL;
        if (replace_name(e, prio, sha1, &tag)) {
                if (!e) {
-                       void **pos;
                        e = xmalloc(sizeof(struct commit_name));
                        hashcpy(e->peeled, peeled);
-                       pos = insert_hash(hash_sha1(peeled), e, &names);
-                       if (pos) {
-                               e->next = *pos;
-                               *pos = e;
-                       } else {
-                               e->next = NULL;
-                       }
+                       hashmap_entry_init(e, hash_sha1(peeled));
+                       hashmap_add(&names, e);
                        e->path = NULL;
                }
                e->tag = tag;
@@ -150,7 +138,7 @@ static int get_name(const char *path, const unsigned char *sha1, int flag, void
                return 0;
 
        /* Accept only tags that match the pattern, if given */
-       if (pattern && (!is_tag || fnmatch(pattern, path + 10, 0)))
+       if (pattern && (!is_tag || wildmatch(pattern, path + 10, 0, NULL)))
                return 0;
 
        /* Is it annotated? */
@@ -292,7 +280,14 @@ static void describe(const char *arg, int last_one)
                fprintf(stderr, _("searching to describe %s\n"), arg);
 
        if (!have_util) {
-               for_each_hash(&names, set_util, NULL);
+               struct hashmap_iter iter;
+               struct commit *c;
+               struct commit_name *n = hashmap_iter_first(&names, &iter);
+               for (; n; n = hashmap_iter_next(&iter)) {
+                       c = lookup_commit_reference_gently(n->peeled, 1);
+                       if (c)
+                               c->util = n;
+               }
                have_util = 1;
        }
 
@@ -463,9 +458,9 @@ int cmd_describe(int argc, const char **argv, const char *prefix)
                return cmd_name_rev(args.argc, args.argv, prefix);
        }
 
-       init_hash(&names);
+       hashmap_init(&names, (hashmap_cmp_fn) commit_name_cmp, 0);
        for_each_rawref(get_name, NULL);
-       if (!names.nr && !always)
+       if (!names.size && !always)
                die(_("No names found, cannot describe anything."));
 
        if (argc == 0) {