From: Phillip Wood <phillip.wood123@gmail.com>
To: Git Mailing List <git@vger.kernel.org>
Cc: "Phillip Wood" <phillip.wood@dunelm.org.uk>,
"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>,
"Carlo Arenas" <carenas@gmail.com>,
"Johannes Schindelin" <Johannes.Schindelin@gmx.de>,
"Junio C Hamano" <gitster@pobox.com>,
"Ramsay Jones" <ramsay@ramsayjones.plus.com>
Subject: [PATCH v4 3/4] terminal: work around macos poll() bug
Date: Wed, 16 Mar 2022 18:54:04 +0000 [thread overview]
Message-ID: <20220316185405.29551-4-phillip.wood123@gmail.com> (raw)
In-Reply-To: <20220316185405.29551-1-phillip.wood123@gmail.com>
From: Phillip Wood <phillip.wood@dunelm.org.uk>
On macos the builtin "add -p" does not handle keys that generate
escape sequences because poll() does not work with terminals
there. Switch to using select() on non-windows platforms to work
around this.
Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
---
compat/terminal.c | 42 ++++++++++++++++++++++++++++++++++++------
1 file changed, 36 insertions(+), 6 deletions(-)
diff --git a/compat/terminal.c b/compat/terminal.c
index 4893294eb6..2ae8a6f13e 100644
--- a/compat/terminal.c
+++ b/compat/terminal.c
@@ -92,6 +92,31 @@ static int enable_non_canonical(enum save_term_flags flags)
return disable_bits(flags, ICANON | ECHO);
}
+/*
+ * On macos it is not possible to use poll() with a terminal so use select
+ * instead.
+ */
+static int getchar_with_timeout(int timeout)
+{
+ struct timeval tv, *tvp = NULL;
+ fd_set readfds;
+ int res;
+
+ if (timeout >= 0) {
+ tv.tv_sec = timeout / 1000;
+ tv.tv_usec = (timeout % 1000) * 1000;
+ tvp = &tv;
+ }
+
+ FD_ZERO(&readfds);
+ FD_SET(0, &readfds);
+ res = select(1, &readfds, NULL, NULL, tvp);
+ if (res <= 0)
+ return EOF;
+
+ return getchar();
+}
+
#elif defined(GIT_WINDOWS_NATIVE)
#define INPUT_PATH "CONIN$"
@@ -257,6 +282,16 @@ static int mingw_getchar(void)
}
#define getchar mingw_getchar
+static int getchar_with_timeout(int timeout)
+{
+ struct pollfd pfd = { .fd = 0, .events = POLLIN };
+
+ if (poll(&pfd, 1, timeout) < 1)
+ return EOF;
+
+ return getchar();
+}
+
#endif
#ifndef FORCE_TEXT
@@ -407,12 +442,7 @@ int read_key_without_echo(struct strbuf *buf)
* half a second when we know that the sequence is complete.
*/
while (!is_known_escape_sequence(buf->buf)) {
- struct pollfd pfd = { .fd = 0, .events = POLLIN };
-
- if (poll(&pfd, 1, 500) < 1)
- break;
-
- ch = getchar();
+ ch = getchar_with_timeout(500);
if (ch == EOF)
break;
strbuf_addch(buf, ch);
--
2.35.1
next prev parent reply other threads:[~2022-03-16 18:54 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-04 13:11 [PATCH 0/4] builtin add -p: hopefully final readkey fixes Phillip Wood
2022-03-04 13:11 ` [PATCH 1/4] terminal: use flags for save_term() Phillip Wood
2022-03-04 20:40 ` Ramsay Jones
2022-03-07 11:11 ` Phillip Wood
2022-03-07 20:21 ` Ramsay Jones
2022-03-08 10:41 ` Phillip Wood
2022-03-05 14:02 ` Ævar Arnfjörð Bjarmason
2022-03-07 10:45 ` Phillip Wood
2022-03-07 12:06 ` Ævar Arnfjörð Bjarmason
2022-03-04 13:11 ` [PATCH 2/4] terminal: don't assume stdin is /dev/tty Phillip Wood
2022-03-04 20:42 ` Ramsay Jones
2022-03-04 13:11 ` [PATCH 3/4] terminal: work around macos poll() bug Phillip Wood
2022-03-04 13:11 ` [PATCH 4/4] terminal: restore settings on SIGTSTP Phillip Wood
2022-03-05 13:59 ` Ævar Arnfjörð Bjarmason
2022-03-07 10:53 ` Phillip Wood
2022-03-07 11:49 ` Ævar Arnfjörð Bjarmason
2022-03-07 13:49 ` Phillip Wood
2022-03-07 14:45 ` Ævar Arnfjörð Bjarmason
2022-03-08 10:54 ` Phillip Wood
2022-03-09 12:19 ` Johannes Schindelin
2022-03-10 16:06 ` Phillip Wood
2022-03-09 11:03 ` [PATCH v2 0/4] builtin add -p: hopefully final readkey fixes Phillip Wood
2022-03-09 11:03 ` [PATCH v2 1/4] terminal: use flags for save_term() Phillip Wood
2022-03-11 16:52 ` Carlo Arenas
2022-03-14 10:49 ` Phillip Wood
2022-03-09 11:03 ` [PATCH v2 2/4] terminal: don't assume stdin is /dev/tty Phillip Wood
2022-03-09 11:03 ` [PATCH v2 3/4] terminal: work around macos poll() bug Phillip Wood
2022-03-10 13:35 ` Ævar Arnfjörð Bjarmason
2022-03-10 16:02 ` Phillip Wood
2022-03-10 18:02 ` Junio C Hamano
2022-03-09 11:03 ` [PATCH v2 4/4] terminal: restore settings on SIGTSTP Phillip Wood
2022-03-09 23:10 ` [PATCH v2 0/4] builtin add -p: hopefully final readkey fixes Junio C Hamano
2022-03-09 23:37 ` Junio C Hamano
2022-03-10 13:28 ` Phillip Wood
2022-03-10 18:18 ` Phillip Wood
2022-03-10 18:53 ` Junio C Hamano
2022-03-10 13:25 ` Johannes Schindelin
2022-03-10 16:08 ` Phillip Wood
2022-03-15 10:57 ` [PATCH v3 " Phillip Wood
2022-03-15 10:57 ` [PATCH v3 1/4] terminal: use flags for save_term() Phillip Wood
2022-03-15 10:57 ` [PATCH v3 2/4] terminal: don't assume stdin is /dev/tty Phillip Wood
2022-03-15 17:42 ` Junio C Hamano
2022-03-15 18:01 ` rsbecker
2022-03-15 19:05 ` Junio C Hamano
2022-03-15 19:38 ` rsbecker
2022-03-15 10:57 ` [PATCH v3 3/4] terminal: work around macos poll() bug Phillip Wood
2022-03-15 10:57 ` [PATCH v3 4/4] terminal: restore settings on SIGTSTP Phillip Wood
2022-03-15 17:51 ` Junio C Hamano
2022-03-16 18:54 ` [PATCH v4 0/4] builtin add -p: hopefully final readkey fixes Phillip Wood
2022-03-16 18:54 ` [PATCH v4 1/4] terminal: use flags for save_term() Phillip Wood
2022-03-16 18:54 ` [PATCH v4 2/4] terminal: don't assume stdin is /dev/tty Phillip Wood
2022-03-16 18:54 ` Phillip Wood [this message]
2022-03-16 18:54 ` [PATCH v4 4/4] terminal: restore settings on SIGTSTP Phillip Wood
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