verify_lock(): do not capitalize error messages
[gitweb.git] / commit.c
index ae7f2b10f4e08a549614346c8262b10503cca953..2d9de807aeb230c97e74928c1b446544186bc4e1 100644 (file)
--- a/commit.c
+++ b/commit.c
@@ -55,12 +55,12 @@ struct commit *lookup_commit(const unsigned char *sha1)
 
 struct commit *lookup_commit_reference_by_name(const char *name)
 {
-       unsigned char sha1[20];
+       struct object_id oid;
        struct commit *commit;
 
-       if (get_sha1_committish(name, sha1))
+       if (get_sha1_committish(name, oid.hash))
                return NULL;
-       commit = lookup_commit_reference(sha1);
+       commit = lookup_commit_reference(oid.hash);
        if (parse_commit(commit))
                return NULL;
        return commit;
@@ -99,7 +99,7 @@ static int commit_graft_alloc, commit_graft_nr;
 static const unsigned char *commit_graft_sha1_access(size_t index, void *table)
 {
        struct commit_graft **commit_graft_table = table;
-       return commit_graft_table[index]->sha1;
+       return commit_graft_table[index]->oid.hash;
 }
 
 static int commit_graft_pos(const unsigned char *sha1)
@@ -110,7 +110,7 @@ static int commit_graft_pos(const unsigned char *sha1)
 
 int register_commit_graft(struct commit_graft *graft, int ignore_dups)
 {
-       int pos = commit_graft_pos(graft->sha1);
+       int pos = commit_graft_pos(graft->oid.hash);
 
        if (0 <= pos) {
                if (ignore_dups)
@@ -138,22 +138,23 @@ struct commit_graft *read_graft_line(char *buf, int len)
        /* The format is just "Commit Parent1 Parent2 ...\n" */
        int i;
        struct commit_graft *graft = NULL;
+       const int entry_size = GIT_SHA1_HEXSZ + 1;
 
        while (len && isspace(buf[len-1]))
                buf[--len] = '\0';
        if (buf[0] == '#' || buf[0] == '\0')
                return NULL;
-       if ((len + 1) % 41)
+       if ((len + 1) % entry_size)
                goto bad_graft_data;
-       i = (len + 1) / 41 - 1;
-       graft = xmalloc(sizeof(*graft) + 20 * i);
+       i = (len + 1) / entry_size - 1;
+       graft = xmalloc(sizeof(*graft) + GIT_SHA1_RAWSZ * i);
        graft->nr_parent = i;
-       if (get_sha1_hex(buf, graft->sha1))
+       if (get_oid_hex(buf, &graft->oid))
                goto bad_graft_data;
-       for (i = 40; i < len; i += 41) {
+       for (i = GIT_SHA1_HEXSZ; i < len; i += entry_size) {
                if (buf[i] != ' ')
                        goto bad_graft_data;
-               if (get_sha1_hex(buf + i + 1, graft->parent[i/41]))
+               if (get_sha1_hex(buf + i + 1, graft->parent[i/entry_size].hash))
                        goto bad_graft_data;
        }
        return graft;
@@ -302,39 +303,42 @@ int parse_commit_buffer(struct commit *item, const void *buffer, unsigned long s
 {
        const char *tail = buffer;
        const char *bufptr = buffer;
-       unsigned char parent[20];
+       struct object_id parent;
        struct commit_list **pptr;
        struct commit_graft *graft;
+       const int tree_entry_len = GIT_SHA1_HEXSZ + 5;
+       const int parent_entry_len = GIT_SHA1_HEXSZ + 7;
 
        if (item->object.parsed)
                return 0;
        item->object.parsed = 1;
        tail += size;
-       if (tail <= bufptr + 46 || memcmp(bufptr, "tree ", 5) || bufptr[45] != '\n')
+       if (tail <= bufptr + tree_entry_len + 1 || memcmp(bufptr, "tree ", 5) ||
+                       bufptr[tree_entry_len] != '\n')
                return error("bogus commit object %s", sha1_to_hex(item->object.sha1));
-       if (get_sha1_hex(bufptr + 5, parent) < 0)
+       if (get_sha1_hex(bufptr + 5, parent.hash) < 0)
                return error("bad tree pointer in commit %s",
                             sha1_to_hex(item->object.sha1));
-       item->tree = lookup_tree(parent);
-       bufptr += 46; /* "tree " + "hex sha1" + "\n" */
+       item->tree = lookup_tree(parent.hash);
+       bufptr += tree_entry_len + 1; /* "tree " + "hex sha1" + "\n" */
        pptr = &item->parents;
 
        graft = lookup_commit_graft(item->object.sha1);
-       while (bufptr + 48 < tail && !memcmp(bufptr, "parent ", 7)) {
+       while (bufptr + parent_entry_len < tail && !memcmp(bufptr, "parent ", 7)) {
                struct commit *new_parent;
 
-               if (tail <= bufptr + 48 ||
-                   get_sha1_hex(bufptr + 7, parent) ||
-                   bufptr[47] != '\n')
+               if (tail <= bufptr + parent_entry_len + 1 ||
+                   get_sha1_hex(bufptr + 7, parent.hash) ||
+                   bufptr[parent_entry_len] != '\n')
                        return error("bad parents in commit %s", sha1_to_hex(item->object.sha1));
-               bufptr += 48;
+               bufptr += parent_entry_len + 1;
                /*
                 * The clone is shallow if nr_parent < 0, and we must
                 * not traverse its real parents even when we unhide them.
                 */
                if (graft && (graft->nr_parent < 0 || grafts_replace_parents))
                        continue;
-               new_parent = lookup_commit(parent);
+               new_parent = lookup_commit(parent.hash);
                if (new_parent)
                        pptr = &commit_list_insert(new_parent, pptr)->next;
        }
@@ -342,7 +346,7 @@ int parse_commit_buffer(struct commit *item, const void *buffer, unsigned long s
                int i;
                struct commit *new_parent;
                for (i = 0; i < graft->nr_parent; i++) {
-                       new_parent = lookup_commit(graft->parent[i]);
+                       new_parent = lookup_commit(graft->parent[i].hash);
                        if (!new_parent)
                                continue;
                        pptr = &commit_list_insert(new_parent, pptr)->next;
@@ -584,25 +588,19 @@ define_commit_slab(author_date_slab, unsigned long);
 static void record_author_date(struct author_date_slab *author_date,
                               struct commit *commit)
 {
-       const char *buf, *line_end, *ident_line;
        const char *buffer = get_commit_buffer(commit, NULL);
        struct ident_split ident;
+       const char *ident_line;
+       size_t ident_len;
        char *date_end;
        unsigned long date;
 
-       for (buf = buffer; buf; buf = line_end + 1) {
-               line_end = strchrnul(buf, '\n');
-               if (!skip_prefix(buf, "author ", &ident_line)) {
-                       if (!line_end[0] || line_end[1] == '\n')
-                               return; /* end of header */
-                       continue;
-               }
-               if (split_ident_line(&ident,
-                                    ident_line, line_end - ident_line) ||
-                   !ident.date_begin || !ident.date_end)
-                       goto fail_exit; /* malformed "author" line */
-               break;
-       }
+       ident_line = find_commit_header(buffer, "author", &ident_len);
+       if (!ident_line)
+               goto fail_exit; /* no author line */
+       if (split_ident_line(&ident, ident_line, ident_len) ||
+           !ident.date_begin || !ident.date_end)
+               goto fail_exit; /* malformed "author" line */
 
        date = strtoul(ident.date_begin, &date_end, 10);
        if (date_end != ident.date_end)
@@ -873,7 +871,7 @@ struct commit_list *get_octopus_merge_bases(struct commit_list *in)
 
                for (j = ret; j; j = j->next) {
                        struct commit_list *bases;
-                       bases = get_merge_bases(i->item, j->item, 1);
+                       bases = get_merge_bases(i->item, j->item);
                        if (!new)
                                new = bases;
                        else
@@ -942,10 +940,10 @@ static int remove_redundant(struct commit **array, int cnt)
        return filled;
 }
 
-struct commit_list *get_merge_bases_many(struct commit *one,
-                                        int n,
-                                        struct commit **twos,
-                                        int cleanup)
+static struct commit_list *get_merge_bases_many_0(struct commit *one,
+                                                 int n,
+                                                 struct commit **twos,
+                                                 int cleanup)
 {
        struct commit_list *list;
        struct commit **rslt;
@@ -983,10 +981,23 @@ struct commit_list *get_merge_bases_many(struct commit *one,
        return result;
 }
 
-struct commit_list *get_merge_bases(struct commit *one, struct commit *two,
-                                   int cleanup)
+struct commit_list *get_merge_bases_many(struct commit *one,
+                                        int n,
+                                        struct commit **twos)
+{
+       return get_merge_bases_many_0(one, n, twos, 1);
+}
+
+struct commit_list *get_merge_bases_many_dirty(struct commit *one,
+                                              int n,
+                                              struct commit **twos)
 {
-       return get_merge_bases_many(one, 1, &two, cleanup);
+       return get_merge_bases_many_0(one, n, twos, 0);
+}
+
+struct commit_list *get_merge_bases(struct commit *one, struct commit *two)
+{
+       return get_merge_bases_many_0(one, 1, &two, 1);
 }
 
 /*
@@ -1220,43 +1231,7 @@ static void handle_signed_tag(struct commit *parent, struct commit_extra_header
        free(buf);
 }
 
-static struct {
-       char result;
-       const char *check;
-} sigcheck_gpg_status[] = {
-       { 'G', "\n[GNUPG:] GOODSIG " },
-       { 'B', "\n[GNUPG:] BADSIG " },
-       { 'U', "\n[GNUPG:] TRUST_NEVER" },
-       { 'U', "\n[GNUPG:] TRUST_UNDEFINED" },
-};
-
-static void parse_gpg_output(struct signature_check *sigc)
-{
-       const char *buf = sigc->gpg_status;
-       int i;
-
-       /* Iterate over all search strings */
-       for (i = 0; i < ARRAY_SIZE(sigcheck_gpg_status); i++) {
-               const char *found, *next;
-
-               if (!skip_prefix(buf, sigcheck_gpg_status[i].check + 1, &found)) {
-                       found = strstr(buf, sigcheck_gpg_status[i].check);
-                       if (!found)
-                               continue;
-                       found += strlen(sigcheck_gpg_status[i].check);
-               }
-               sigc->result = sigcheck_gpg_status[i].result;
-               /* The trust messages are not followed by key/signer information */
-               if (sigc->result != 'U') {
-                       sigc->key = xmemdupz(found, 16);
-                       found += 17;
-                       next = strchrnul(found, '\n');
-                       sigc->signer = xmemdupz(found, next - found);
-               }
-       }
-}
-
-void check_commit_signature(const struct commit* commit, struct signature_check *sigc)
+void check_commit_signature(const struct commit *commit, struct signature_check *sigc)
 {
        struct strbuf payload = STRBUF_INIT;
        struct strbuf signature = STRBUF_INIT;
@@ -1609,10 +1584,10 @@ struct commit *get_merge_parent(const char *name)
 {
        struct object *obj;
        struct commit *commit;
-       unsigned char sha1[20];
-       if (get_sha1(name, sha1))
+       struct object_id oid;
+       if (get_sha1(name, oid.hash))
                return NULL;
-       obj = parse_object(sha1);
+       obj = parse_object(oid.hash);
        commit = (struct commit *)peel_to_type(name, 0, obj, OBJ_COMMIT);
        if (commit && !commit->util) {
                struct merge_remote_desc *desc;
@@ -1660,3 +1635,71 @@ void print_commit_list(struct commit_list *list,
                printf(format, sha1_to_hex(list->item->object.sha1));
        }
 }
+
+const char *find_commit_header(const char *msg, const char *key, size_t *out_len)
+{
+       int key_len = strlen(key);
+       const char *line = msg;
+
+       while (line) {
+               const char *eol = strchrnul(line, '\n');
+
+               if (line == eol)
+                       return NULL;
+
+               if (eol - line > key_len &&
+                   !strncmp(line, key, key_len) &&
+                   line[key_len] == ' ') {
+                       *out_len = eol - line - key_len - 1;
+                       return line + key_len + 1;
+               }
+               line = *eol ? eol + 1 : NULL;
+       }
+       return NULL;
+}
+
+/*
+ * Inspect sb and determine the true "end" of the log message, in
+ * order to find where to put a new Signed-off-by: line.  Ignored are
+ * trailing comment lines and blank lines, and also the traditional
+ * "Conflicts:" block that is not commented out, so that we can use
+ * "git commit -s --amend" on an existing commit that forgot to remove
+ * it.
+ *
+ * Returns the number of bytes from the tail to ignore, to be fed as
+ * the second parameter to append_signoff().
+ */
+int ignore_non_trailer(struct strbuf *sb)
+{
+       int boc = 0;
+       int bol = 0;
+       int in_old_conflicts_block = 0;
+
+       while (bol < sb->len) {
+               char *next_line;
+
+               if (!(next_line = memchr(sb->buf + bol, '\n', sb->len - bol)))
+                       next_line = sb->buf + sb->len;
+               else
+                       next_line++;
+
+               if (sb->buf[bol] == comment_line_char || sb->buf[bol] == '\n') {
+                       /* is this the first of the run of comments? */
+                       if (!boc)
+                               boc = bol;
+                       /* otherwise, it is just continuing */
+               } else if (starts_with(sb->buf + bol, "Conflicts:\n")) {
+                       in_old_conflicts_block = 1;
+                       if (!boc)
+                               boc = bol;
+               } else if (in_old_conflicts_block && sb->buf[bol] == '\t') {
+                       ; /* a pathname in the conflicts block */
+               } else if (boc) {
+                       /* the previous was not trailing comment */
+                       boc = 0;
+                       in_old_conflicts_block = 0;
+               }
+               bol = next_line - sb->buf;
+       }
+       return boc ? sb->len - boc : 0;
+}