diff options
Diffstat (limited to 'readline/callback.c')
| -rw-r--r-- | readline/callback.c | 122 |
1 files changed, 113 insertions, 9 deletions
diff --git a/readline/callback.c b/readline/callback.c index a8f4323c929..9120969ca23 100644 --- a/readline/callback.c +++ b/readline/callback.c @@ -1,6 +1,6 @@ /* callback.c -- functions to use readline as an X `callback' mechanism. */ -/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc. +/* Copyright (C) 1987-2005 Free Software Foundation, Inc. This file is part of the GNU Readline Library, a library for reading lines of text with interactive input and history editing. @@ -44,9 +44,14 @@ #include "readline.h" #include "rlprivate.h" +/* Private data for callback registration functions. See comments in + rl_callback_read_char for more details. */ +_rl_callback_func_t *_rl_callback_func = 0; +_rl_callback_generic_arg *_rl_callback_data = 0; + /* **************************************************************** */ /* */ -/* Callback Readline Functions */ +/* Callback Readline Functions */ /* */ /* **************************************************************** */ @@ -72,7 +77,8 @@ _rl_callback_newline () { in_handler = 1; - (*rl_prep_term_function) (_rl_meta_flag); + if (rl_prep_term_function) + (*rl_prep_term_function) (_rl_meta_flag); #if defined (HANDLE_SIGNALS) rl_set_signals (); @@ -89,6 +95,7 @@ rl_callback_handler_install (prompt, linefunc) rl_vcpfunc_t *linefunc; { rl_set_prompt (prompt); + RL_SETSTATE (RL_STATE_CALLBACK); rl_linefunc = linefunc; _rl_callback_newline (); } @@ -98,7 +105,8 @@ void rl_callback_read_char () { char *line; - int eof; + int eof, jcode; + static procenv_t olevel; if (rl_linefunc == NULL) { @@ -106,7 +114,79 @@ rl_callback_read_char () abort (); } - eof = readline_internal_char (); + memcpy ((void *)olevel, (void *)readline_top_level, sizeof (procenv_t)); + jcode = setjmp (readline_top_level); + if (jcode) + { + (*rl_redisplay_function) (); + _rl_want_redisplay = 0; + memcpy ((void *)readline_top_level, (void *)olevel, sizeof (procenv_t)); + return; + } + + if (RL_ISSTATE (RL_STATE_ISEARCH)) + { + eof = _rl_isearch_callback (_rl_iscxt); + if (eof == 0 && (RL_ISSTATE (RL_STATE_ISEARCH) == 0) && RL_ISSTATE (RL_STATE_INPUTPENDING)) + rl_callback_read_char (); + + return; + } + else if (RL_ISSTATE (RL_STATE_NSEARCH)) + { + eof = _rl_nsearch_callback (_rl_nscxt); + return; + } + else if (RL_ISSTATE (RL_STATE_NUMERICARG)) + { + eof = _rl_arg_callback (_rl_argcxt); + if (eof == 0 && (RL_ISSTATE (RL_STATE_NUMERICARG) == 0) && RL_ISSTATE (RL_STATE_INPUTPENDING)) + rl_callback_read_char (); + /* XXX - this should handle _rl_last_command_was_kill better */ + else if (RL_ISSTATE (RL_STATE_NUMERICARG) == 0) + _rl_internal_char_cleanup (); + + return; + } + else if (RL_ISSTATE (RL_STATE_MULTIKEY)) + { + eof = _rl_dispatch_callback (_rl_kscxt); /* For now */ + while ((eof == -1 || eof == -2) && RL_ISSTATE (RL_STATE_MULTIKEY) && _rl_kscxt && (_rl_kscxt->flags & KSEQ_DISPATCHED)) + eof = _rl_dispatch_callback (_rl_kscxt); + if (RL_ISSTATE (RL_STATE_MULTIKEY) == 0) + { + _rl_internal_char_cleanup (); + _rl_want_redisplay = 1; + } + } + else if (_rl_callback_func) + { + /* 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 pointer to a struct that has + the argument count originally passed to the registering function and + space for any additional parameters. */ + eof = (*_rl_callback_func) (_rl_callback_data); + /* If the function `deregisters' itself, make sure the data is cleaned + up. */ + if (_rl_callback_func == 0) + { + if (_rl_callback_data) + { + _rl_callback_data_dispose (_rl_callback_data); + _rl_callback_data = 0; + } + _rl_internal_char_cleanup (); + } + } + else + eof = readline_internal_char (); + + if (rl_done == 0 && _rl_want_redisplay) + { + (*rl_redisplay_function) (); + _rl_want_redisplay = 0; + } /* We loop in case some function has pushed input back with rl_execute_next. */ for (;;) @@ -115,7 +195,8 @@ rl_callback_read_char () { line = readline_internal_teardown (eof); - (*rl_deprep_term_function) (); + if (rl_deprep_term_function) + (*rl_deprep_term_function) (); #if defined (HANDLE_SIGNALS) rl_clear_signals (); #endif @@ -131,10 +212,10 @@ rl_callback_read_char () if (in_handler == 0 && rl_linefunc) _rl_callback_newline (); } - if (rl_pending_input) + if (rl_pending_input || _rl_pushed_input_available () || RL_ISSTATE (RL_STATE_MACROINPUT)) eof = readline_internal_char (); else - break; + break; } } @@ -143,14 +224,37 @@ void rl_callback_handler_remove () { rl_linefunc = NULL; + RL_UNSETSTATE (RL_STATE_CALLBACK); if (in_handler) { in_handler = 0; - (*rl_deprep_term_function) (); + if (rl_deprep_term_function) + (*rl_deprep_term_function) (); #if defined (HANDLE_SIGNALS) rl_clear_signals (); #endif } } +_rl_callback_generic_arg * +_rl_callback_data_alloc (count) + int count; +{ + _rl_callback_generic_arg *arg; + + arg = (_rl_callback_generic_arg *)xmalloc (sizeof (_rl_callback_generic_arg)); + arg->count = count; + + arg->i1 = arg->i2 = 0; + + return arg; +} + +void _rl_callback_data_dispose (arg) + _rl_callback_generic_arg *arg; +{ + if (arg) + free (arg); +} + #endif |