determine_author_info(): copy getenv output

diff --git a/commit.c b/commit.c
index 1fc60c01095a2dde8d5c7c7949efb0c2bff9c14d..9416d842c6e870713fb183c66a785cb887661c0a 100644 (file)
--- a/commit.c
+++ b/commit.c
@@ -18,19 +18,6 @@ int save_commit_buffer = 1;
 
 const char *commit_type = "commit";
 
-static struct commit *check_commit(struct object *obj,
-                                  const unsigned char *sha1,
-                                  int quiet)
-{
-       if (obj->type != OBJ_COMMIT) {
-               if (!quiet)
-                       error("Object %s is a %s, not a commit",
-                             sha1_to_hex(sha1), typename(obj->type));
-               return NULL;
-       }
-       return (struct commit *) obj;
-}
-
 struct commit *lookup_commit_reference_gently(const unsigned char *sha1,
                                              int quiet)
 {
@@ -38,7 +25,7 @@ struct commit *lookup_commit_reference_gently(const unsigned char *sha1,
 
        if (!obj)
                return NULL;
-       return check_commit(obj, sha1, quiet);
+       return object_as_type(obj, OBJ_COMMIT, quiet);
 }
 
 struct commit *lookup_commit_reference(const unsigned char *sha1)
@@ -61,13 +48,9 @@ struct commit *lookup_commit_or_die(const unsigned char *sha1, const char *ref_n
 struct commit *lookup_commit(const unsigned char *sha1)
 {
        struct object *obj = lookup_object(sha1);
-       if (!obj) {
-               struct commit *c = alloc_commit_node();
-               return create_object(sha1, OBJ_COMMIT, c);
-       }
-       if (!obj->type)
-               obj->type = OBJ_COMMIT;
-       return check_commit(obj, sha1, 0);
+       if (!obj)
+               return create_object(sha1, alloc_commit_node());
+       return object_as_type(obj, OBJ_COMMIT, 0);
 }
 
 struct commit *lookup_commit_reference_by_name(const char *name)
@@ -447,12 +430,7 @@ struct commit_list *copy_commit_list(struct commit_list *list)
        struct commit_list *head = NULL;
        struct commit_list **pp = &head;
        while (list) {
-               struct commit_list *new;
-               new = xmalloc(sizeof(struct commit_list));
-               new->item = list->item;
-               new->next = NULL;
-               *pp = new;
-               pp = &new->next;
+               pp = commit_list_append(list->item, pp);
                list = list->next;
        }
        return head;
@@ -606,25 +584,19 @@ 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)
@@ -988,12 +960,7 @@ struct commit_list *get_merge_bases_many(struct commit *one,
        }
 
        /* There are more than one */
-       cnt = 0;
-       list = result;
-       while (list) {
-               list = list->next;
-               cnt++;
-       }
+       cnt = commit_list_count(result);
        rslt = xcalloc(cnt, sizeof(*rslt));
        for (list = result, i = 0; list; list = list->next)
                rslt[i++] = list->item;
@@ -1173,6 +1140,40 @@ int parse_signed_commit(const struct commit *commit,
        return saw_signature;
 }
 
+int remove_signature(struct strbuf *buf)
+{
+       const char *line = buf->buf;
+       const char *tail = buf->buf + buf->len;
+       int in_signature = 0;
+       const char *sig_start = NULL;
+       const char *sig_end = NULL;
+
+       while (line < tail) {
+               const char *next = memchr(line, '\n', tail - line);
+               next = next ? next + 1 : tail;
+
+               if (in_signature && line[0] == ' ')
+                       sig_end = next;
+               else if (starts_with(line, gpg_sig_header) &&
+                        line[gpg_sig_header_len] == ' ') {
+                       sig_start = line;
+                       sig_end = next;
+                       in_signature = 1;
+               } else {
+                       if (*line == '\n')
+                               /* dump the whole remainder of the buffer */
+                               next = tail;
+                       in_signature = 0;
+               }
+               line = next;
+       }
+
+       if (sig_start)
+               strbuf_remove(buf, sig_start - buf->buf, sig_end - sig_start);
+
+       return sig_start != NULL;
+}
+
 static void handle_signed_tag(struct commit *parent, struct commit_extra_header ***tail)
 {
        struct merge_remote_desc *desc;
@@ -1311,6 +1312,19 @@ 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)
+{
+       struct commit_extra_header *extra, *to_free;
+
+       to_free = read_commit_extra_headers(commit, NULL);
+       for (extra = to_free; extra; extra = extra->next) {
+               if (strcmp(extra->key, "mergetag"))
+                       continue; /* not a merge tag */
+               fn(commit, extra, data);
+       }
+       free_commit_extra_headers(to_free);
+}
+
 static inline int standard_header_field(const char *field, size_t len)
 {
        return ((len == 4 && !memcmp(field, "tree ", 5)) ||
@@ -1640,3 +1654,25 @@ 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;
+}