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[51.7.2.230]) by smtp.gmail.com with ESMTPSA id f18-20020a5d6652000000b001e669ebd528sm2409144wrw.91.2022.03.16.11.54.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Mar 2022 11:54:14 -0700 (PDT) From: Phillip Wood To: Git Mailing List Cc: Phillip Wood , =?UTF-8?q?=C3=86var=20Arnfj=C3=B6r=C3=B0=20Bjarmason?= , Carlo Arenas , Johannes Schindelin , Junio C Hamano , Ramsay Jones Subject: [PATCH v4 3/4] terminal: work around macos poll() bug Date: Wed, 16 Mar 2022 18:54:04 +0000 Message-Id: <20220316185405.29551-4-phillip.wood123@gmail.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220316185405.29551-1-phillip.wood123@gmail.com> References: <20220304131126.8293-1-phillip.wood123@gmail.com> <20220316185405.29551-1-phillip.wood123@gmail.com> Reply-To: Phillip Wood MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org From: Phillip Wood 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 --- 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