Merge remote-tracking branch 'git-po/maint'
[gitweb.git] / commit.c
index ff51c9f34a975fdd3320f8c185f6e3c8b5176e81..b0e57cc4400964ad7dca8d37c5d4c10bf3979b51 100644 (file)
--- a/commit.c
+++ b/commit.c
@@ -1,6 +1,7 @@
 #include "cache.h"
 #include "tag.h"
 #include "commit.h"
+#include "commit-graph.h"
 #include "pkt-line.h"
 #include "utf8.h"
 #include "diff.h"
@@ -12,6 +13,7 @@
 #include "prio-queue.h"
 #include "sha1-lookup.h"
 #include "wt-status.h"
+#include "advice.h"
 
 static struct commit_extra_header *read_commit_extra_header_lines(const char *buf, size_t len, const char **);
 
@@ -126,10 +128,8 @@ int register_commit_graft(struct commit_graft *graft, int ignore_dups)
        ALLOC_GROW(commit_graft, commit_graft_nr + 1, commit_graft_alloc);
        commit_graft_nr++;
        if (pos < commit_graft_nr)
-               memmove(commit_graft + pos + 1,
-                       commit_graft + pos,
-                       (commit_graft_nr - pos - 1) *
-                       sizeof(*commit_graft));
+               MOVE_ARRAY(commit_graft + pos + 1, commit_graft + pos,
+                          commit_graft_nr - pos - 1);
        commit_graft[pos] = graft;
        return 0;
 }
@@ -178,6 +178,15 @@ static int read_graft_file(const char *graft_file)
        struct strbuf buf = STRBUF_INIT;
        if (!fp)
                return -1;
+       if (advice_graft_file_deprecated)
+               advise(_("Support for <GIT_DIR>/info/grafts is deprecated\n"
+                        "and will be removed in a future Git version.\n"
+                        "\n"
+                        "Please use \"git replace --convert-graft-file\"\n"
+                        "to convert the grafts into replace refs.\n"
+                        "\n"
+                        "Turn this message off by running\n"
+                        "\"git config advice.graftFileDeprecated false\""));
        while (!strbuf_getwholeline(&buf, fp, '\n')) {
                /* The format is just "Commit Parent1 Parent2 ...\n" */
                struct commit_graft *graft = read_graft_line(&buf);
@@ -268,13 +277,13 @@ const void *get_commit_buffer(const struct commit *commit, unsigned long *sizep)
        if (!ret) {
                enum object_type type;
                unsigned long size;
-               ret = read_sha1_file(commit->object.oid.hash, &type, &size);
+               ret = read_object_file(&commit->object.oid, &type, &size);
                if (!ret)
                        die("cannot read commit object %s",
                            oid_to_hex(&commit->object.oid));
                if (type != OBJ_COMMIT)
                        die("expected commit for %s, got %s",
-                           oid_to_hex(&commit->object.oid), typename(type));
+                           oid_to_hex(&commit->object.oid), type_name(type));
                if (sizep)
                        *sizep = size;
        }
@@ -297,6 +306,22 @@ void free_commit_buffer(struct commit *commit)
        }
 }
 
+struct tree *get_commit_tree(const struct commit *commit)
+{
+       if (commit->maybe_tree || !commit->object.parsed)
+               return commit->maybe_tree;
+
+       if (commit->graph_pos == COMMIT_NOT_FROM_GRAPH)
+               BUG("commit has NULL tree, but was not loaded from commit-graph");
+
+       return get_commit_tree_in_graph(commit);
+}
+
+struct object_id *get_commit_tree_oid(const struct commit *commit)
+{
+       return &get_commit_tree(commit)->object.oid;
+}
+
 const void *detach_commit_buffer(struct commit *commit, unsigned long *sizep)
 {
        struct commit_buffer *v = buffer_slab_peek(&buffer_slab, commit);
@@ -333,10 +358,10 @@ int parse_commit_buffer(struct commit *item, const void *buffer, unsigned long s
        if (tail <= bufptr + tree_entry_len + 1 || memcmp(bufptr, "tree ", 5) ||
                        bufptr[tree_entry_len] != '\n')
                return error("bogus commit object %s", oid_to_hex(&item->object.oid));
-       if (get_sha1_hex(bufptr + 5, parent.hash) < 0)
+       if (get_oid_hex(bufptr + 5, &parent) < 0)
                return error("bad tree pointer in commit %s",
                             oid_to_hex(&item->object.oid));
-       item->tree = lookup_tree(&parent);
+       item->maybe_tree = lookup_tree(&parent);
        bufptr += tree_entry_len + 1; /* "tree " + "hex sha1" + "\n" */
        pptr = &item->parents;
 
@@ -345,7 +370,7 @@ int parse_commit_buffer(struct commit *item, const void *buffer, unsigned long s
                struct commit *new_parent;
 
                if (tail <= bufptr + parent_entry_len + 1 ||
-                   get_sha1_hex(bufptr + 7, parent.hash) ||
+                   get_oid_hex(bufptr + 7, &parent) ||
                    bufptr[parent_entry_len] != '\n')
                        return error("bad parents in commit %s", oid_to_hex(&item->object.oid));
                bufptr += parent_entry_len + 1;
@@ -385,7 +410,9 @@ int parse_commit_gently(struct commit *item, int quiet_on_missing)
                return -1;
        if (item->object.parsed)
                return 0;
-       buffer = read_sha1_file(item->object.oid.hash, &type, &size);
+       if (parse_commit_in_graph(item))
+               return 0;
+       buffer = read_object_file(&item->object.oid, &type, &size);
        if (!buffer)
                return quiet_on_missing ? -1 :
                        error("Could not read %s",
@@ -861,19 +888,19 @@ struct commit_list *get_octopus_merge_bases(struct commit_list *in)
        commit_list_insert(in->item, &ret);
 
        for (i = in->next; i; i = i->next) {
-               struct commit_list *new = NULL, *end = NULL;
+               struct commit_list *new_commits = NULL, *end = NULL;
 
                for (j = ret; j; j = j->next) {
                        struct commit_list *bases;
                        bases = get_merge_bases(i->item, j->item);
-                       if (!new)
-                               new = bases;
+                       if (!new_commits)
+                               new_commits = bases;
                        else
                                end->next = bases;
                        for (k = bases; k; k = k->next)
                                end = k;
                }
-               ret = new;
+               ret = new_commits;
        }
        return ret;
 }
@@ -1208,7 +1235,7 @@ static void handle_signed_tag(struct commit *parent, struct commit_extra_header
        desc = merge_remote_util(parent);
        if (!desc || !desc->obj)
                return;
-       buf = read_sha1_file(desc->obj->oid.hash, &type, &size);
+       buf = read_object_file(&desc->obj->oid, &type, &size);
        if (!buf || type != OBJ_TAG)
                goto free_return;
        len = parse_signature(buf, size);
@@ -1290,17 +1317,19 @@ struct commit_extra_header *read_commit_extra_headers(struct commit *commit,
        return extra;
 }
 
-void for_each_mergetag(each_mergetag_fn fn, struct commit *commit, void *data)
+int for_each_mergetag(each_mergetag_fn fn, struct commit *commit, void *data)
 {
        struct commit_extra_header *extra, *to_free;
+       int res = 0;
 
        to_free = read_commit_extra_headers(commit, NULL);
-       for (extra = to_free; extra; extra = extra->next) {
+       for (extra = to_free; !res && extra; extra = extra->next) {
                if (strcmp(extra->key, "mergetag"))
                        continue; /* not a merge tag */
-               fn(commit, extra, data);
+               res = fn(commit, extra, data);
        }
        free_commit_extra_headers(to_free);
+       return res;
 }
 
 static inline int standard_header_field(const char *field, size_t len)
@@ -1380,9 +1409,8 @@ void free_commit_extra_headers(struct commit_extra_header *extra)
        }
 }
 
-int commit_tree(const char *msg, size_t msg_len,
-               const unsigned char *tree,
-               struct commit_list *parents, unsigned char *ret,
+int commit_tree(const char *msg, size_t msg_len, const struct object_id *tree,
+               struct commit_list *parents, struct object_id *ret,
                const char *author, const char *sign_commit)
 {
        struct commit_extra_header *extra = NULL, **tail = &extra;
@@ -1511,8 +1539,8 @@ N_("Warning: commit message did not conform to UTF-8.\n"
    "variable i18n.commitencoding to the encoding your project uses.\n");
 
 int commit_tree_extended(const char *msg, size_t msg_len,
-                        const unsigned char *tree,
-                        struct commit_list *parents, unsigned char *ret,
+                        const struct object_id *tree,
+                        struct commit_list *parents, struct object_id *ret,
                         const char *author, const char *sign_commit,
                         struct commit_extra_header *extra)
 {
@@ -1520,7 +1548,7 @@ int commit_tree_extended(const char *msg, size_t msg_len,
        int encoding_is_utf8;
        struct strbuf buffer;
 
-       assert_sha1_type(tree, OBJ_TREE);
+       assert_oid_type(tree, OBJ_TREE);
 
        if (memchr(msg, '\0', msg_len))
                return error("a NUL byte in commit log message not allowed.");
@@ -1529,7 +1557,7 @@ int commit_tree_extended(const char *msg, size_t msg_len,
        encoding_is_utf8 = is_encoding_utf8(git_commit_encoding);
 
        strbuf_init(&buffer, 8192); /* should avoid reallocs for the headers */
-       strbuf_addf(&buffer, "tree %s\n", sha1_to_hex(tree));
+       strbuf_addf(&buffer, "tree %s\n", oid_to_hex(tree));
 
        /*
         * NOTE! This ordering means that the same exact tree merged with a
@@ -1568,7 +1596,7 @@ int commit_tree_extended(const char *msg, size_t msg_len,
                goto out;
        }
 
-       result = write_sha1_file(buffer.buf, buffer.len, commit_type, ret);
+       result = write_object_file(buffer.buf, buffer.len, commit_type, ret);
 out:
        strbuf_release(&buffer);
        return result;
@@ -1617,11 +1645,11 @@ struct commit *get_merge_parent(const char *name)
 struct commit_list **commit_list_append(struct commit *commit,
                                        struct commit_list **next)
 {
-       struct commit_list *new = xmalloc(sizeof(struct commit_list));
-       new->item = commit;
-       *next = new;
-       new->next = NULL;
-       return &new->next;
+       struct commit_list *new_commit = xmalloc(sizeof(struct commit_list));
+       new_commit->item = commit;
+       *next = new_commit;
+       new_commit->next = NULL;
+       return &new_commit->next;
 }
 
 const char *find_commit_header(const char *msg, const char *key, size_t *out_len)