make commit_tree a library function

diff --git a/builtin/shortlog.c b/builtin/shortlog.c
index b3b055f68ce59b6b91ef6949bd8c4bd0bed68b55..06320f5285988365b8340e110427866e68536b47 100644 (file)
--- a/builtin/shortlog.c
+++ b/builtin/shortlog.c
@@ -295,6 +295,8 @@ int cmd_shortlog(int argc, const char **argv, const char *prefix)
        if (!nongit && !rev.pending.nr && isatty(0))
                add_head_to_pending(&rev);
        if (rev.pending.nr == 0) {
+               if (isatty(0))
+                       fprintf(stderr, "(reading log message from standard input)\n");
                read_from_stdin(&log);
        }
        else
@@ -304,9 +306,19 @@ int cmd_shortlog(int argc, const char **argv, const char *prefix)
        return 0;
 }
 
+static void add_wrapped_shortlog_msg(struct strbuf *sb, const char *s,
+                                    const struct shortlog *log)
+{
+       int col = strbuf_add_wrapped_text(sb, s, log->in1, log->in2, log->wrap);
+       if (col != log->wrap)
+               strbuf_addch(sb, '\n');
+}
+
 void shortlog_output(struct shortlog *log)
 {
        int i, j;
+       struct strbuf sb = STRBUF_INIT;
+
        if (log->sort_by_number)
                qsort(log->list.items, log->list.nr, sizeof(struct string_list_item),
                        compare_by_number);
@@ -321,9 +333,9 @@ void shortlog_output(struct shortlog *log)
                                const char *msg = onelines->items[j].string;
 
                                if (log->wrap_lines) {
-                                       int col = print_wrapped_text(msg, log->in1, log->in2, log->wrap);
-                                       if (col != log->wrap)
-                                               putchar('\n');
+                                       strbuf_reset(&sb);
+                                       add_wrapped_shortlog_msg(&sb, msg, log);
+                                       fwrite(sb.buf, sb.len, 1, stdout);
                                }
                                else
                                        printf("      %s\n", msg);
@@ -337,6 +349,7 @@ void shortlog_output(struct shortlog *log)
                log->list.items[i].util = NULL;
        }
 
+       strbuf_release(&sb);
        log->list.strdup_strings = 1;
        string_list_clear(&log->list, 1);
        clear_mailmap(&log->mailmap);