pkt-line: fix packet_read_line() to handle len < 0 errors
[gitweb.git] / builtin / describe.c
index 6769446e1f57537879fd1b411f83ba7393bad338..45adbf67d5a065b0f55eeab6524563a0a7951c6c 100644 (file)
@@ -9,6 +9,7 @@
 #include "diff.h"
 #include "hashmap.h"
 #include "argv-array.h"
+#include "run-command.h"
 
 #define SEEN           (1u << 0)
 #define MAX_TAGS       (FLAG_BITS - 1)
@@ -31,7 +32,7 @@ static int have_util;
 static struct string_list patterns = STRING_LIST_INIT_NODUP;
 static struct string_list exclude_patterns = STRING_LIST_INIT_NODUP;
 static int always;
-static const char *dirty;
+static const char *suffix, *dirty, *broken;
 
 /* diff-index command arguments to check if working tree is dirty. */
 static const char *diff_index_args[] = {
@@ -40,11 +41,11 @@ static const char *diff_index_args[] = {
 
 struct commit_name {
        struct hashmap_entry entry;
-       unsigned char peeled[20];
+       struct object_id peeled;
        struct tag *tag;
        unsigned prio:2; /* annotated tag = 2, tag = 1, head = 0 */
        unsigned name_checked:1;
-       unsigned char sha1[20];
+       struct object_id oid;
        char *path;
 };
 
@@ -55,17 +56,17 @@ static const char *prio_names[] = {
 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);
+       return oidcmp(&cn1->peeled, peeled ? peeled : &cn2->peeled);
 }
 
-static inline struct commit_name *find_commit_name(const unsigned char *peeled)
+static inline struct commit_name *find_commit_name(const struct object_id *peeled)
 {
-       return hashmap_get_from_hash(&names, sha1hash(peeled), peeled);
+       return hashmap_get_from_hash(&names, sha1hash(peeled->hash), peeled->hash);
 }
 
 static int replace_name(struct commit_name *e,
                               int prio,
-                              const unsigned char *sha1,
+                              const struct object_id *oid,
                               struct tag **tag)
 {
        if (!e || e->prio < prio)
@@ -78,13 +79,13 @@ static int replace_name(struct commit_name *e,
                struct tag *t;
 
                if (!e->tag) {
-                       t = lookup_tag(e->sha1);
+                       t = lookup_tag(e->oid.hash);
                        if (!t || parse_tag(t))
                                return 1;
                        e->tag = t;
                }
 
-               t = lookup_tag(sha1);
+               t = lookup_tag(oid->hash);
                if (!t || parse_tag(t))
                        return 0;
                *tag = t;
@@ -97,24 +98,24 @@ static int replace_name(struct commit_name *e,
 }
 
 static void add_to_known_names(const char *path,
-                              const unsigned char *peeled,
+                              const struct object_id *peeled,
                               int prio,
-                              const unsigned char *sha1)
+                              const struct object_id *oid)
 {
        struct commit_name *e = find_commit_name(peeled);
        struct tag *tag = NULL;
-       if (replace_name(e, prio, sha1, &tag)) {
+       if (replace_name(e, prio, oid, &tag)) {
                if (!e) {
                        e = xmalloc(sizeof(struct commit_name));
-                       hashcpy(e->peeled, peeled);
-                       hashmap_entry_init(e, sha1hash(peeled));
+                       oidcpy(&e->peeled, peeled);
+                       hashmap_entry_init(e, sha1hash(peeled->hash));
                        hashmap_add(&names, e);
                        e->path = NULL;
                }
                e->tag = tag;
                e->prio = prio;
                e->name_checked = 0;
-               hashcpy(e->sha1, sha1);
+               oidcpy(&e->oid, oid);
                free(e->path);
                e->path = xstrdup(path);
        }
@@ -186,7 +187,7 @@ static int get_name(const char *path, const struct object_id *oid, int flag, voi
        else
                prio = 0;
 
-       add_to_known_names(all ? path + 5 : path + 10, peeled.hash, prio, oid->hash);
+       add_to_known_names(all ? path + 5 : path + 10, &peeled, prio, oid);
        return 0;
 }
 
@@ -244,7 +245,7 @@ static unsigned long finish_depth_computation(
 static void display_name(struct commit_name *n)
 {
        if (n->prio == 2 && !n->tag) {
-               n->tag = lookup_tag(n->sha1);
+               n->tag = lookup_tag(n->oid.hash);
                if (!n->tag || parse_tag(n->tag))
                        die(_("annotated tag %s not available"), n->path);
        }
@@ -262,14 +263,14 @@ static void display_name(struct commit_name *n)
                printf("%s", n->path);
 }
 
-static void show_suffix(int depth, const unsigned char *sha1)
+static void show_suffix(int depth, const struct object_id *oid)
 {
-       printf("-%d-g%s", depth, find_unique_abbrev(sha1, abbrev));
+       printf("-%d-g%s", depth, find_unique_abbrev(oid->hash, abbrev));
 }
 
 static void describe(const char *arg, int last_one)
 {
-       unsigned char sha1[20];
+       struct object_id oid;
        struct commit *cmit, *gave_up_on = NULL;
        struct commit_list *list;
        struct commit_name *n;
@@ -278,22 +279,22 @@ static void describe(const char *arg, int last_one)
        unsigned long seen_commits = 0;
        unsigned int unannotated_cnt = 0;
 
-       if (get_sha1(arg, sha1))
+       if (get_oid(arg, &oid))
                die(_("Not a valid object name %s"), arg);
-       cmit = lookup_commit_reference(sha1);
+       cmit = lookup_commit_reference(oid.hash);
        if (!cmit)
                die(_("%s is not a valid '%s' object"), arg, commit_type);
 
-       n = find_commit_name(cmit->object.oid.hash);
+       n = find_commit_name(&cmit->object.oid);
        if (n && (tags || all || n->prio == 2)) {
                /*
                 * Exact match to an existing ref.
                 */
                display_name(n);
                if (longformat)
-                       show_suffix(0, n->tag ? n->tag->tagged->oid.hash : sha1);
-               if (dirty)
-                       printf("%s", dirty);
+                       show_suffix(0, n->tag ? &n->tag->tagged->oid : &oid);
+               if (suffix)
+                       printf("%s", suffix);
                printf("\n");
                return;
        }
@@ -308,7 +309,7 @@ static void describe(const char *arg, int last_one)
                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);
+                       c = lookup_commit_reference_gently(n->peeled.hash, 1);
                        if (c)
                                c->util = n;
                }
@@ -369,8 +370,8 @@ static void describe(const char *arg, int last_one)
                struct object_id *oid = &cmit->object.oid;
                if (always) {
                        printf("%s", find_unique_abbrev(oid->hash, abbrev));
-                       if (dirty)
-                               printf("%s", dirty);
+                       if (suffix)
+                               printf("%s", suffix);
                        printf("\n");
                        return;
                }
@@ -412,9 +413,9 @@ static void describe(const char *arg, int last_one)
 
        display_name(all_matches[0].name);
        if (abbrev)
-               show_suffix(all_matches[0].depth, cmit->object.oid.hash);
-       if (dirty)
-               printf("%s", dirty);
+               show_suffix(all_matches[0].depth, &cmit->object.oid);
+       if (suffix)
+               printf("%s", suffix);
        printf("\n");
 
        if (!last_one)
@@ -445,6 +446,9 @@ int cmd_describe(int argc, const char **argv, const char *prefix)
                {OPTION_STRING, 0, "dirty",  &dirty, N_("mark"),
                        N_("append <mark> on dirty working tree (default: \"-dirty\")"),
                        PARSE_OPT_OPTARG, NULL, (intptr_t) "-dirty"},
+               {OPTION_STRING, 0, "broken",  &broken, N_("mark"),
+                       N_("append <mark> on broken working tree (default: \"-broken\")"),
+                       PARSE_OPT_OPTARG, NULL, (intptr_t) "-broken"},
                OPT_END(),
        };
 
@@ -493,7 +497,28 @@ int cmd_describe(int argc, const char **argv, const char *prefix)
                die(_("No names found, cannot describe anything."));
 
        if (argc == 0) {
-               if (dirty) {
+               if (broken) {
+                       struct child_process cp = CHILD_PROCESS_INIT;
+                       argv_array_pushv(&cp.args, diff_index_args);
+                       cp.git_cmd = 1;
+                       cp.no_stdin = 1;
+                       cp.no_stdout = 1;
+
+                       if (!dirty)
+                               dirty = "-dirty";
+
+                       switch (run_command(&cp)) {
+                       case 0:
+                               suffix = NULL;
+                               break;
+                       case 1:
+                               suffix = dirty;
+                               break;
+                       default:
+                               /* diff-index aborted abnormally */
+                               suffix = broken;
+                       }
+               } else if (dirty) {
                        static struct lock_file index_lock;
                        int fd;
 
@@ -506,11 +531,15 @@ int cmd_describe(int argc, const char **argv, const char *prefix)
 
                        if (!cmd_diff_index(ARRAY_SIZE(diff_index_args) - 1,
                                            diff_index_args, prefix))
-                               dirty = NULL;
+                               suffix = NULL;
+                       else
+                               suffix = dirty;
                }
                describe("HEAD", 1);
        } else if (dirty) {
                die(_("--dirty is incompatible with commit-ishes"));
+       } else if (broken) {
+               die(_("--broken is incompatible with commit-ishes"));
        } else {
                while (argc-- > 0)
                        describe(*argv++, argc == 0);