diff options
Diffstat (limited to 'callback.c')
| -rw-r--r-- | callback.c | 44 |
1 files changed, 32 insertions, 12 deletions
@@ -62,8 +62,10 @@ _rl_callback_generic_arg *_rl_callback_data = 0; whenever a complete line of input is ready. The user must then call rl_callback_read_char() every time some input is available, and rl_callback_read_char() will call the user's function with the complete - text read in at each end of line. The terminal is kept prepped and - signals handled all the time, except during calls to the user's function. */ + text read in at each end of line. The terminal is kept prepped + all the time, except during calls to the user's function. Signal + handlers are only installed when the application calls back into + readline, so readline doesn't `steal' signals from the application. */ rl_vcpfunc_t *rl_linefunc; /* user callback function */ static int in_handler; /* terminal_prepped and signals set? */ @@ -80,10 +82,6 @@ _rl_callback_newline () if (rl_prep_term_function) (*rl_prep_term_function) (_rl_meta_flag); - -#if defined (HANDLE_SIGNALS) - rl_set_signals (); -#endif } readline_internal_setup (); @@ -102,6 +100,16 @@ rl_callback_handler_install (prompt, linefunc) _rl_callback_newline (); } +#if defined (HANDLE_SIGNALS) +#define CALLBACK_READ_RETURN() \ + do { \ + rl_clear_signals (); \ + return; \ + } while (0) +#else +#define CALLBACK_READ_RETURN() return +#endif + /* Read one character, and dispatch to the handler if it ends the line. */ void rl_callback_read_char () @@ -117,15 +125,24 @@ rl_callback_read_char () } memcpy ((void *)olevel, (void *)_rl_top_level, sizeof (procenv_t)); +#if defined (HAVE_POSIX_SIGSETJMP) + jcode = sigsetjmp (_rl_top_level, 0); +#else jcode = setjmp (_rl_top_level); +#endif if (jcode) { (*rl_redisplay_function) (); _rl_want_redisplay = 0; memcpy ((void *)_rl_top_level, (void *)olevel, sizeof (procenv_t)); - return; + CALLBACK_READ_RETURN (); } +#if defined (HANDLE_SIGNALS) + /* Install signal handlers only when readline has control. */ + rl_set_signals (); +#endif + do { RL_CHECK_SIGNALS (); @@ -135,12 +152,13 @@ rl_callback_read_char () if (eof == 0 && (RL_ISSTATE (RL_STATE_ISEARCH) == 0) && RL_ISSTATE (RL_STATE_INPUTPENDING)) rl_callback_read_char (); - return; + CALLBACK_READ_RETURN (); } else if (RL_ISSTATE (RL_STATE_NSEARCH)) { eof = _rl_nsearch_callback (_rl_nscxt); - return; + + CALLBACK_READ_RETURN (); } #if defined (VI_MODE) else if (RL_ISSTATE (RL_STATE_VIMOTION)) @@ -151,7 +169,7 @@ rl_callback_read_char () if (RL_ISSTATE (RL_STATE_NUMERICARG) == 0) _rl_internal_char_cleanup (); - return; + CALLBACK_READ_RETURN (); } #endif else if (RL_ISSTATE (RL_STATE_NUMERICARG)) @@ -163,7 +181,7 @@ rl_callback_read_char () else if (RL_ISSTATE (RL_STATE_NUMERICARG) == 0) _rl_internal_char_cleanup (); - return; + CALLBACK_READ_RETURN (); } else if (RL_ISSTATE (RL_STATE_MULTIKEY)) { @@ -180,7 +198,7 @@ rl_callback_read_char () { /* This allows functions that simply need to read an additional character (like quoted-insert) to register a function to be - called when input is available. _rl_callback_data is simply a + called when input is available. _rl_callback_data is a pointer to a struct that has the argument count originally passed to the registering function and space for any additional parameters. */ @@ -230,6 +248,8 @@ rl_callback_read_char () } } while (rl_pending_input || _rl_pushed_input_available () || RL_ISSTATE (RL_STATE_MACROINPUT)); + + CALLBACK_READ_RETURN (); } /* Remove the handler, and make sure the terminal is in its normal state. */ |