bpo-30946: Remove obsolete fallback code in readline module (#2738)
* Remove obsolete fallback code in readline module * Add NEWS * Remove obsolete include * Fix macro on Windows
This commit is contained in:
Antoine Pitrou
GitHub
parent
efa26bcd50
commit
f474c5a3f3
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@ -38,11 +38,12 @@ PyAPI_DATA(PyTypeObject) PyStdPrinter_Type;
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#endif /* Py_LIMITED_API */
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/* A routine to check if a file descriptor can be select()-ed. */
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#ifdef HAVE_SELECT
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#define _PyIsSelectable_fd(FD) ((unsigned int)(FD) < (unsigned int)FD_SETSIZE)
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#else
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#ifdef _MSC_VER
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/* On Windows, any socket fd can be select()-ed, no matter how high */
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#define _PyIsSelectable_fd(FD) (1)
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#endif /* HAVE_SELECT */
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#else
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#define _PyIsSelectable_fd(FD) ((unsigned int)(FD) < (unsigned int)FD_SETSIZE)
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#endif
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#ifdef __cplusplus
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}
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@ -0,0 +1,2 @@
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Remove obsolete code in readline module for platforms where GNU readline is
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older than 2.1 or where select() is not available.
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@ -7,7 +7,6 @@
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/* Standard definitions */
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#include "Python.h"
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#include <stddef.h>
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#include <setjmp.h>
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#include <signal.h>
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#include <errno.h>
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#include <sys/time.h>
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@ -1180,9 +1179,6 @@ setup_readline(readlinestate *mod_state)
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/* Wrapper around GNU readline that handles signals differently. */
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#if defined(HAVE_RL_CALLBACK) && defined(HAVE_SELECT)
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static char *completed_input_string;
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static void
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rlhandler(char *text)
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@ -1262,47 +1258,6 @@ readline_until_enter_or_signal(const char *prompt, int *signal)
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}
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#else
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/* Interrupt handler */
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static jmp_buf jbuf;
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/* ARGSUSED */
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static void
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onintr(int sig)
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{
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longjmp(jbuf, 1);
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}
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static char *
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readline_until_enter_or_signal(const char *prompt, int *signal)
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{
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PyOS_sighandler_t old_inthandler;
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char *p;
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*signal = 0;
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old_inthandler = PyOS_setsig(SIGINT, onintr);
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if (setjmp(jbuf)) {
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#ifdef HAVE_SIGRELSE
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/* This seems necessary on SunOS 4.1 (Rasmus Hahn) */
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sigrelse(SIGINT);
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#endif
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PyOS_setsig(SIGINT, old_inthandler);
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*signal = 1;
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return NULL;
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}
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rl_event_hook = PyOS_InputHook;
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p = readline(prompt);
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PyOS_setsig(SIGINT, old_inthandler);
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return p;
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}
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#endif /*defined(HAVE_RL_CALLBACK) && defined(HAVE_SELECT) */
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static char *
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call_readline(FILE *sys_stdin, FILE *sys_stdout, const char *prompt)
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{
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@ -530,9 +530,6 @@ Py_NO_ENABLE_SHARED to find out. Also support MS_NO_COREDLL for b/w compat */
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/* Define if you have readlink. */
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/* #undef HAVE_READLINK */
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/* Define if you have select. */
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/* #undef HAVE_SELECT */
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/* Define if you have setpgid. */
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/* #undef HAVE_SETPGID */
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@ -15228,50 +15228,6 @@ $as_echo "#define HAVE_LIBREADLINE 1" >>confdefs.h
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fi
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# check for readline 2.1
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{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for rl_callback_handler_install in -lreadline" >&5
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$as_echo_n "checking for rl_callback_handler_install in -lreadline... " >&6; }
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if ${ac_cv_lib_readline_rl_callback_handler_install+:} false; then :
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$as_echo_n "(cached) " >&6
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else
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ac_check_lib_save_LIBS=$LIBS
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LIBS="-lreadline $READLINE_LIBS $LIBS"
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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/* Override any GCC internal prototype to avoid an error.
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Use char because int might match the return type of a GCC
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builtin and then its argument prototype would still apply. */
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#ifdef __cplusplus
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extern "C"
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#endif
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char rl_callback_handler_install ();
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int
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main ()
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{
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return rl_callback_handler_install ();
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;
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return 0;
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}
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_ACEOF
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if ac_fn_c_try_link "$LINENO"; then :
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ac_cv_lib_readline_rl_callback_handler_install=yes
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else
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ac_cv_lib_readline_rl_callback_handler_install=no
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fi
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rm -f core conftest.err conftest.$ac_objext \
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conftest$ac_exeext conftest.$ac_ext
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LIBS=$ac_check_lib_save_LIBS
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fi
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{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_readline_rl_callback_handler_install" >&5
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$as_echo "$ac_cv_lib_readline_rl_callback_handler_install" >&6; }
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if test "x$ac_cv_lib_readline_rl_callback_handler_install" = xyes; then :
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$as_echo "#define HAVE_RL_CALLBACK 1" >>confdefs.h
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fi
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# check for readline 2.2
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cat confdefs.h - <<_ACEOF >conftest.$ac_ext
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/* end confdefs.h. */
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@ -4786,11 +4786,6 @@ else
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[Define if you have the readline library (-lreadline).])
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fi
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# check for readline 2.1
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AC_CHECK_LIB(readline, rl_callback_handler_install,
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AC_DEFINE(HAVE_RL_CALLBACK, 1,
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[Define if you have readline 2.1]), ,$READLINE_LIBS)
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# check for readline 2.2
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AC_PREPROC_IFELSE([AC_LANG_SOURCE([[#include <readline/readline.h>]])],
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[have_readline=yes],
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@ -733,9 +733,6 @@
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/* Define if readline supports append_history */
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#undef HAVE_RL_APPEND_HISTORY
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/* Define if you have readline 2.1 */
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#undef HAVE_RL_CALLBACK
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/* Define if you can turn off readline's signal handling. */
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#undef HAVE_RL_CATCH_SIGNAL
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@ -778,9 +775,6 @@
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/* Define to 1 if you have the `sched_setscheduler' function. */
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#undef HAVE_SCHED_SETSCHEDULER
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/* Define to 1 if you have the `select' function. */
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#undef HAVE_SELECT
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/* Define to 1 if you have the `sem_getvalue' function. */
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#undef HAVE_SEM_GETVALUE
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