builtin/show-branch: rewrite functions to work with object_id

diff --git a/line-log.c b/line-log.c
index 150010105806291180d9e6bdfcf1939fb242f2ac..a5ed9e3642271afd69a0434876515b97aaceb657 100644 (file)
--- a/line-log.c
+++ b/line-log.c
@@ -237,7 +237,7 @@ static void diff_ranges_release(struct diff_ranges *diff)
        range_set_release(&diff->target);
 }
 
-void line_log_data_init(struct line_log_data *r)
+static void line_log_data_init(struct line_log_data *r)
 {
        memset(r, 0, sizeof(struct line_log_data));
        range_set_init(&r->ranges, 0);
@@ -533,7 +533,7 @@ static void fill_line_ends(struct diff_filespec *spec, long *lines,
        }
 
        /* shrink the array to fit the elements */
-       ends = xrealloc(ends, cur * sizeof(*ends));
+       REALLOC_ARRAY(ends, cur);
        *lines = cur-1;
        *line_ends = ends;
 }
@@ -575,7 +575,7 @@ parse_lines(struct commit *commit, const char *prefix, struct string_list *args)
 
                name_part = skip_range_arg(item->string);
                if (!name_part || *name_part != ':' || !name_part[1])
-                       die("-L argument '%s' not of the form start,end:file",
+                       die("-L argument not 'start,end:file' or ':funcname:file': %s",
                            item->string);
                range_part = xstrndup(item->string, name_part - item->string);
                name_part++;
@@ -766,17 +766,6 @@ void line_log_init(struct rev_info *rev, const char *prefix, struct string_list
        }
 }
 
-static int count_parents(struct commit *commit)
-{
-       struct commit_list *parents = commit->parents;
-       int count = 0;
-       while (parents) {
-               count++;
-               parents = parents->next;
-       }
-       return count;
-}
-
 static void move_diff_queue(struct diff_queue_struct *dst,
                            struct diff_queue_struct *src)
 {
@@ -1110,6 +1099,7 @@ static int process_all_files(struct line_log_data **range_out,
                        rg->pair = diff_filepair_dup(queue->queue[i]);
                        memcpy(&rg->diff, pairdiff, sizeof(struct diff_ranges));
                }
+               free(pairdiff);
        }
 
        return changed;
@@ -1150,7 +1140,10 @@ static int process_ranges_merge_commit(struct rev_info *rev, struct commit *comm
        struct commit **parents;
        struct commit_list *p;
        int i;
-       int nparents = count_parents(commit);
+       int nparents = commit_list_count(commit->parents);
+
+       if (nparents > 1 && rev->first_parent_only)
+               nparents = 1;
 
        diffqueues = xmalloc(nparents * sizeof(*diffqueues));
        cand = xmalloc(nparents * sizeof(*cand));
@@ -1174,9 +1167,7 @@ static int process_ranges_merge_commit(struct rev_info *rev, struct commit *comm
                         */
                        add_line_range(rev, parents[i], cand[i]);
                        clear_commit_line_range(rev, commit);
-                       commit->parents = xmalloc(sizeof(struct commit_list));
-                       commit->parents->item = parents[i];
-                       commit->parents->next = NULL;
+                       commit_list_append(parents[i], &commit->parents);
                        free(parents);
                        free(cand);
                        free_diffqueues(nparents, diffqueues);