From 1640632b4f3f69775f04e9e40dfd2fd912e0f458 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nguy=E1=BB=85n=20Th=C3=A1i=20Ng=E1=BB=8Dc=20Duy?= Date: Fri, 19 Apr 2013 09:08:52 +1000 Subject: pretty: support %>> that steal trailing spaces MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This is pretty useful in `%<(100)%s%Cred%>(20)% an' where %s does not use up all 100 columns and %an needs more than 20 columns. By replacing %>(20) with %>>(20), %an can steal spaces from %s. %>> understands escape sequences, so %Cred does not stop it from stealing spaces in %<(100). Signed-off-by: Nguyễn Thái Ngọc Duy Signed-off-by: Junio C Hamano --- pretty.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) (limited to 'pretty.c') diff --git a/pretty.c b/pretty.c index f7c6442e7..d59579a2c 100644 --- a/pretty.c +++ b/pretty.c @@ -773,6 +773,7 @@ enum flush_type { no_flush, flush_right, flush_left, + flush_left_and_steal, flush_both }; @@ -1026,6 +1027,9 @@ static size_t parse_padding_placeholder(struct strbuf *sb, if (*ch == '<') { flush_type = flush_both; ch++; + } else if (*ch == '>') { + flush_type = flush_left_and_steal; + ch++; } else flush_type = flush_left; break; @@ -1334,6 +1338,36 @@ static size_t format_and_pad_commit(struct strbuf *sb, /* in UTF-8 */ 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: -- cgit v1.2.1