From: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
To: John Cai via GitGitGadget <gitgitgadget@gmail.com>
Cc: git@vger.kernel.org,
Johannes Schindelin <Johannes.Schindelin@gmx.de>,
John Cai <johncai86@gmail.com>
Subject: Re: [PATCH v7 2/2] name-rev.c: use strbuf_getline instead of limited size buffer
Date: Tue, 18 Jan 2022 17:09:37 +0100 [thread overview]
Message-ID: <220118.865yqhow6z.gmgdl@evledraar.gmail.com> (raw)
In-Reply-To: <19e7bf965574652840c5e0cde6f3dd188bec82b0.1641425372.git.gitgitgadget@gmail.com>
On Wed, Jan 05 2022, John Cai via GitGitGadget wrote:
> From: John Cai <johncai86@gmail.com>
>
> Using a buffer limited to 2048 is unnecessarily limiting. Switch to
> using a string buffer to read in stdin for annotation.
>
> Signed-off-by: "John Cai" <johncai86@gmail.com>
> ---
> builtin/name-rev.c | 11 +++++------
> 1 file changed, 5 insertions(+), 6 deletions(-)
>
> diff --git a/builtin/name-rev.c b/builtin/name-rev.c
> index 8baf5b52d0b..138e3c30a2b 100644
> --- a/builtin/name-rev.c
> +++ b/builtin/name-rev.c
> @@ -623,14 +623,13 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
> name_tips();
>
> if (annotate_stdin) {
> - char buffer[2048];
> + struct strbuf sb = STRBUF_INIT;
>
> - while (!feof(stdin)) {
> - char *p = fgets(buffer, sizeof(buffer), stdin);
> - if (!p)
> - break;
> - name_rev_line(p, &data);
> + while (strbuf_getline(&sb, stdin) != EOF) {
> + strbuf_addch(&sb, '\n');
> + name_rev_line(sb.buf, &data);
> }
> + strbuf_release(&sb);
> } else if (all) {
> int i, max;
Maybe there's a subtlety with \r in newlines (Windows), but isn't this
doing the same thing as:
diff --git a/builtin/name-rev.c b/builtin/name-rev.c
index 138e3c30a2b..03dbf251450 100644
--- a/builtin/name-rev.c
+++ b/builtin/name-rev.c
@@ -625,10 +625,8 @@ int cmd_name_rev(int argc, const char **argv, const char *prefix)
if (annotate_stdin) {
struct strbuf sb = STRBUF_INIT;
- while (strbuf_getline(&sb, stdin) != EOF) {
- strbuf_addch(&sb, '\n');
+ while (!strbuf_getwholeline(&sb, stdin, '\n'))
name_rev_line(sb.buf, &data);
- }
strbuf_release(&sb);
} else if (all) {
int i, max;
After writing that I see this was changed on the basis of Junio's
feedback in https://lore.kernel.org/git/xmqqr19ofdo5.fsf@gitster.g/ :)
FWIW I think it's fine as-is, but it also seems that name_rev_line()
really doesn't care about lines per-se, but just that we don't split
OIDs across "lines" (as we'll tokenize get_oid() on them). So
e.g. splitting by ' ' lines (spaces) also works here, but not 'a' (as
that would split a [0-9a-f].
prev parent reply other threads:[~2022-01-18 16:18 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-26 4:28 [PATCH] name-rev: deprecate --stdin in favor of --annotate-text John Cai via GitGitGadget
2021-12-27 19:49 ` Junio C Hamano
2021-12-28 5:13 ` John Cai
2021-12-31 8:16 ` Junio C Hamano
2022-01-01 22:59 ` Johannes Schindelin
2021-12-29 6:23 ` [PATCH v2 0/2] name-rev: deprecate --stdin in favor of --anotate-text John Cai via GitGitGadget
2021-12-29 6:23 ` [PATCH v2 1/2] name-rev: deprecate --stdin in favor of --annotate-text John Cai via GitGitGadget
2021-12-30 22:36 ` Junio C Hamano
2021-12-29 6:23 ` [PATCH v2 2/2] name-rev.c: use strbuf_getline instead of limited size buffer John Cai via GitGitGadget
2022-01-03 14:47 ` [PATCH v3 0/2] name-rev: deprecate --stdin in favor of --annotate-stdin John Cai via GitGitGadget
2022-01-03 14:47 ` [PATCH v3 1/2] name-rev: deprecate --stdin in favor of --annotate-text John Cai via GitGitGadget
2022-01-04 2:36 ` Junio C Hamano
2022-01-04 3:16 ` Junio C Hamano
2022-01-04 13:25 ` Philip Oakley
2022-01-04 19:00 ` Junio C Hamano
2022-01-04 19:38 ` Eric Sunshine
2022-01-03 14:47 ` [PATCH v3 2/2] name-rev.c: use strbuf_getline instead of limited size buffer John Cai via GitGitGadget
2022-01-04 2:16 ` Junio C Hamano
2022-01-04 14:49 ` [PATCH v4 0/2] name-rev: deprecate --stdin in favor of --annotate-stdin John Cai via GitGitGadget
2022-01-04 14:49 ` [PATCH v4 1/2] " John Cai via GitGitGadget
2022-01-04 22:12 ` Junio C Hamano
2022-01-05 11:15 ` Phillip Wood
2022-01-05 19:47 ` Junio C Hamano
2022-01-05 19:52 ` Junio C Hamano
2022-01-04 14:49 ` [PATCH v4 2/2] name-rev.c: use strbuf_getline instead of limited size buffer John Cai via GitGitGadget
2022-01-04 14:54 ` John Cai
2022-01-05 4:20 ` [PATCH v5 0/2] name-rev: deprecate --stdin in favor of --annotate-stdin John Cai via GitGitGadget
2022-01-05 4:20 ` [PATCH v5 1/2] " John Cai via GitGitGadget
2022-01-05 20:07 ` Junio C Hamano
2022-01-05 4:20 ` [PATCH v5 2/2] name-rev.c: use strbuf_getline instead of limited size buffer John Cai via GitGitGadget
2022-01-05 22:59 ` [PATCH v6 0/2] name-rev: deprecate --stdin in favor of --annotate-stdin John Cai via GitGitGadget
2022-01-05 22:59 ` [PATCH v6 1/2] " John Cai via GitGitGadget
2022-01-05 23:00 ` [PATCH v6 2/2] name-rev.c: use strbuf_getline instead of limited size buffer John Cai via GitGitGadget
2022-01-05 23:12 ` [PATCH v6 0/2] name-rev: deprecate --stdin in favor of --annotate-stdin Junio C Hamano
2022-01-05 23:29 ` [PATCH v7 " John Cai via GitGitGadget
2022-01-05 23:29 ` [PATCH v7 1/2] " John Cai via GitGitGadget
2022-01-08 13:47 ` John Cai
2022-01-10 17:38 ` Junio C Hamano
2022-01-10 19:01 ` John Cai
2022-01-10 19:11 ` Junio C Hamano
2022-01-11 11:01 ` Phillip Wood
2022-01-05 23:29 ` [PATCH v7 2/2] name-rev.c: use strbuf_getline instead of limited size buffer John Cai via GitGitGadget
2022-01-18 16:09 ` Ævar Arnfjörð Bjarmason [this message]
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