static size_t format_and_pad_commit(struct strbuf *sb, /* in UTF-8 */
const char *placeholder,
struct format_commit_context *c)
{
struct strbuf local_sb = STRBUF_INIT;
int total_consumed = 0, len, padding = c->padding;
if (padding < 0) {
const char *start = strrchr(sb->buf, '\n');
int occupied;
if (!start)
start = sb->buf;
occupied = utf8_strnwidth(start, -1, 1);
padding = (-padding) - occupied;
}
while (1) {
int modifier = *placeholder == 'C';
int consumed = format_commit_one(&local_sb, placeholder, c);
total_consumed += consumed;
if (!modifier)
break;
placeholder += consumed;
if (*placeholder != '%')
break;
placeholder++;
total_consumed++;
}
len = utf8_strnwidth(local_sb.buf, -1, 1);
if (c->flush_type == flush_left_and_steal) {
const char *ch = sb->buf + sb->len - 1;
while (len > padding && ch > sb->buf) {
const char *p;
if (*ch == ' ') {
ch--;
padding++;
continue;
}
/* check for trailing ansi sequences */
if (*ch != 'm')
break;
p = ch - 1;
while (ch - p < 10 && *p != '\033')
p--;
if (*p != '\033' ||
ch + 1 - p != display_mode_esc_sequence_len(p))
break;
/*
* got a good ansi sequence, put it back to
* local_sb as we're cutting sb
*/
strbuf_insert(&local_sb, 0, p, ch + 1 - p);
ch = p - 1;
}
strbuf_setlen(sb, ch + 1 - sb->buf);
c->flush_type = flush_left;
}
if (len > padding) {
switch (c->truncate) {
case trunc_left:
strbuf_utf8_replace(&local_sb,
0, len - (padding - 2),
"..");
break;
case trunc_middle:
strbuf_utf8_replace(&local_sb,
padding / 2 - 1,
len - (padding - 2),
"..");
break;
case trunc_right:
strbuf_utf8_replace(&local_sb,
padding - 2, len - (padding - 2),
"..");
break;
case trunc_none:
break;
}
strbuf_addbuf(sb, &local_sb);
} else {
int sb_len = sb->len, offset = 0;
if (c->flush_type == flush_left)
offset = padding - len;
else if (c->flush_type == flush_both)
offset = (padding - len) / 2;
/*
* we calculate padding in columns, now
* convert it back to chars
*/
padding = padding - len + local_sb.len;
strbuf_grow(sb, padding);
strbuf_setlen(sb, sb_len + padding);
memset(sb->buf + sb_len, ' ', sb->len - sb_len);
memcpy(sb->buf + sb_len + offset, local_sb.buf,
local_sb.len);
}
strbuf_release(&local_sb);
c->flush_type = no_flush;
return total_consumed;
}
int utf8_strwidth(const char *string)
{
return utf8_strnwidth(string, -1, 0);
}
