| /* bind.c -- key binding and startup file support for the readline library. */ |
| |
| /* Copyright (C) 1987-2010 Free Software Foundation, Inc. |
| |
| This file is part of the GNU Readline Library (Readline), a library |
| for reading lines of text with interactive input and history editing. |
| |
| Readline is free software: you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation, either version 3 of the License, or |
| (at your option) any later version. |
| |
| Readline is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with Readline. If not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #define READLINE_LIBRARY |
| |
| #if defined (__TANDEM) |
| # include <floss.h> |
| #endif |
| |
| #if defined (HAVE_CONFIG_H) |
| # include <config.h> |
| #endif |
| |
| #include <stdio.h> |
| #include <sys/types.h> |
| #include <fcntl.h> |
| #if defined (HAVE_SYS_FILE_H) |
| # include <sys/file.h> |
| #endif /* HAVE_SYS_FILE_H */ |
| |
| #if defined (HAVE_UNISTD_H) |
| # include <unistd.h> |
| #endif /* HAVE_UNISTD_H */ |
| |
| #if defined (HAVE_STDLIB_H) |
| # include <stdlib.h> |
| #else |
| # include "ansi_stdlib.h" |
| #endif /* HAVE_STDLIB_H */ |
| |
| #include <errno.h> |
| |
| #if !defined (errno) |
| extern int errno; |
| #endif /* !errno */ |
| |
| #include "posixstat.h" |
| |
| /* System-specific feature definitions and include files. */ |
| #include "rldefs.h" |
| |
| /* Some standard library routines. */ |
| #include "readline.h" |
| #include "history.h" |
| |
| #include "rlprivate.h" |
| #include "rlshell.h" |
| #include "xmalloc.h" |
| |
| #if !defined (strchr) && !defined (__STDC__) |
| extern char *strchr (), *strrchr (); |
| #endif /* !strchr && !__STDC__ */ |
| |
| /* Variables exported by this file. */ |
| Keymap rl_binding_keymap; |
| |
| static char *_rl_read_file PARAMS((char *, size_t *)); |
| static void _rl_init_file_error PARAMS((const char *)); |
| static int _rl_read_init_file PARAMS((const char *, int)); |
| static int glean_key_from_name PARAMS((char *)); |
| static int find_boolean_var PARAMS((const char *)); |
| |
| static char *_rl_get_string_variable_value PARAMS((const char *)); |
| static int substring_member_of_array PARAMS((const char *, const char * const *)); |
| |
| static int currently_reading_init_file; |
| |
| /* used only in this file */ |
| static int _rl_prefer_visible_bell = 1; |
| |
| /* **************************************************************** */ |
| /* */ |
| /* Binding keys */ |
| /* */ |
| /* **************************************************************** */ |
| |
| /* rl_add_defun (char *name, rl_command_func_t *function, int key) |
| Add NAME to the list of named functions. Make FUNCTION be the function |
| that gets called. If KEY is not -1, then bind it. */ |
| int |
| rl_add_defun (name, function, key) |
| const char *name; |
| rl_command_func_t *function; |
| int key; |
| { |
| if (key != -1) |
| rl_bind_key (key, function); |
| rl_add_funmap_entry (name, function); |
| return 0; |
| } |
| |
| /* Bind KEY to FUNCTION. Returns non-zero if KEY is out of range. */ |
| int |
| rl_bind_key (key, function) |
| int key; |
| rl_command_func_t *function; |
| { |
| if (key < 0) |
| return (key); |
| |
| if (META_CHAR (key) && _rl_convert_meta_chars_to_ascii) |
| { |
| if (_rl_keymap[ESC].type == ISKMAP) |
| { |
| Keymap escmap; |
| |
| escmap = FUNCTION_TO_KEYMAP (_rl_keymap, ESC); |
| key = UNMETA (key); |
| escmap[key].type = ISFUNC; |
| escmap[key].function = function; |
| return (0); |
| } |
| return (key); |
| } |
| |
| _rl_keymap[key].type = ISFUNC; |
| _rl_keymap[key].function = function; |
| rl_binding_keymap = _rl_keymap; |
| return (0); |
| } |
| |
| /* Bind KEY to FUNCTION in MAP. Returns non-zero in case of invalid |
| KEY. */ |
| int |
| rl_bind_key_in_map (key, function, map) |
| int key; |
| rl_command_func_t *function; |
| Keymap map; |
| { |
| int result; |
| Keymap oldmap; |
| |
| oldmap = _rl_keymap; |
| _rl_keymap = map; |
| result = rl_bind_key (key, function); |
| _rl_keymap = oldmap; |
| return (result); |
| } |
| |
| /* Bind key sequence KEYSEQ to DEFAULT_FUNC if KEYSEQ is unbound. Right |
| now, this is always used to attempt to bind the arrow keys, hence the |
| check for rl_vi_movement_mode. */ |
| int |
| rl_bind_key_if_unbound_in_map (key, default_func, kmap) |
| int key; |
| rl_command_func_t *default_func; |
| Keymap kmap; |
| { |
| char keyseq[2]; |
| |
| keyseq[0] = (unsigned char)key; |
| keyseq[1] = '\0'; |
| return (rl_bind_keyseq_if_unbound_in_map (keyseq, default_func, kmap)); |
| } |
| |
| int |
| rl_bind_key_if_unbound (key, default_func) |
| int key; |
| rl_command_func_t *default_func; |
| { |
| char keyseq[2]; |
| |
| keyseq[0] = (unsigned char)key; |
| keyseq[1] = '\0'; |
| return (rl_bind_keyseq_if_unbound_in_map (keyseq, default_func, _rl_keymap)); |
| } |
| |
| /* Make KEY do nothing in the currently selected keymap. |
| Returns non-zero in case of error. */ |
| int |
| rl_unbind_key (key) |
| int key; |
| { |
| return (rl_bind_key (key, (rl_command_func_t *)NULL)); |
| } |
| |
| /* Make KEY do nothing in MAP. |
| Returns non-zero in case of error. */ |
| int |
| rl_unbind_key_in_map (key, map) |
| int key; |
| Keymap map; |
| { |
| return (rl_bind_key_in_map (key, (rl_command_func_t *)NULL, map)); |
| } |
| |
| /* Unbind all keys bound to FUNCTION in MAP. */ |
| int |
| rl_unbind_function_in_map (func, map) |
| rl_command_func_t *func; |
| Keymap map; |
| { |
| register int i, rval; |
| |
| for (i = rval = 0; i < KEYMAP_SIZE; i++) |
| { |
| if (map[i].type == ISFUNC && map[i].function == func) |
| { |
| map[i].function = (rl_command_func_t *)NULL; |
| rval = 1; |
| } |
| } |
| return rval; |
| } |
| |
| int |
| rl_unbind_command_in_map (command, map) |
| const char *command; |
| Keymap map; |
| { |
| rl_command_func_t *func; |
| |
| func = rl_named_function (command); |
| if (func == 0) |
| return 0; |
| return (rl_unbind_function_in_map (func, map)); |
| } |
| |
| /* Bind the key sequence represented by the string KEYSEQ to |
| FUNCTION, starting in the current keymap. This makes new |
| keymaps as necessary. */ |
| int |
| rl_bind_keyseq (keyseq, function) |
| const char *keyseq; |
| rl_command_func_t *function; |
| { |
| return (rl_generic_bind (ISFUNC, keyseq, (char *)function, _rl_keymap)); |
| } |
| |
| /* Bind the key sequence represented by the string KEYSEQ to |
| FUNCTION. This makes new keymaps as necessary. The initial |
| place to do bindings is in MAP. */ |
| int |
| rl_bind_keyseq_in_map (keyseq, function, map) |
| const char *keyseq; |
| rl_command_func_t *function; |
| Keymap map; |
| { |
| return (rl_generic_bind (ISFUNC, keyseq, (char *)function, map)); |
| } |
| |
| /* Backwards compatibility; equivalent to rl_bind_keyseq_in_map() */ |
| int |
| rl_set_key (keyseq, function, map) |
| const char *keyseq; |
| rl_command_func_t *function; |
| Keymap map; |
| { |
| return (rl_generic_bind (ISFUNC, keyseq, (char *)function, map)); |
| } |
| |
| /* Bind key sequence KEYSEQ to DEFAULT_FUNC if KEYSEQ is unbound. Right |
| now, this is always used to attempt to bind the arrow keys, hence the |
| check for rl_vi_movement_mode. */ |
| int |
| rl_bind_keyseq_if_unbound_in_map (keyseq, default_func, kmap) |
| const char *keyseq; |
| rl_command_func_t *default_func; |
| Keymap kmap; |
| { |
| rl_command_func_t *func; |
| |
| if (keyseq) |
| { |
| func = rl_function_of_keyseq (keyseq, kmap, (int *)NULL); |
| #if defined (VI_MODE) |
| if (!func || func == rl_do_lowercase_version || func == rl_vi_movement_mode) |
| #else |
| if (!func || func == rl_do_lowercase_version) |
| #endif |
| return (rl_bind_keyseq_in_map (keyseq, default_func, kmap)); |
| else |
| return 1; |
| } |
| return 0; |
| } |
| |
| int |
| rl_bind_keyseq_if_unbound (keyseq, default_func) |
| const char *keyseq; |
| rl_command_func_t *default_func; |
| { |
| return (rl_bind_keyseq_if_unbound_in_map (keyseq, default_func, _rl_keymap)); |
| } |
| |
| /* Bind the key sequence represented by the string KEYSEQ to |
| the string of characters MACRO. This makes new keymaps as |
| necessary. The initial place to do bindings is in MAP. */ |
| int |
| rl_macro_bind (keyseq, macro, map) |
| const char *keyseq, *macro; |
| Keymap map; |
| { |
| char *macro_keys; |
| int macro_keys_len; |
| |
| macro_keys = (char *)xmalloc ((2 * strlen (macro)) + 1); |
| |
| if (rl_translate_keyseq (macro, macro_keys, ¯o_keys_len)) |
| { |
| xfree (macro_keys); |
| return -1; |
| } |
| rl_generic_bind (ISMACR, keyseq, macro_keys, map); |
| return 0; |
| } |
| |
| /* Bind the key sequence represented by the string KEYSEQ to |
| the arbitrary pointer DATA. TYPE says what kind of data is |
| pointed to by DATA, right now this can be a function (ISFUNC), |
| a macro (ISMACR), or a keymap (ISKMAP). This makes new keymaps |
| as necessary. The initial place to do bindings is in MAP. */ |
| int |
| rl_generic_bind (type, keyseq, data, map) |
| int type; |
| const char *keyseq; |
| char *data; |
| Keymap map; |
| { |
| char *keys; |
| int keys_len; |
| register int i; |
| KEYMAP_ENTRY k; |
| |
| k.function = 0; |
| |
| /* If no keys to bind to, exit right away. */ |
| if (keyseq == 0 || *keyseq == 0) |
| { |
| if (type == ISMACR) |
| xfree (data); |
| return -1; |
| } |
| |
| keys = (char *)xmalloc (1 + (2 * strlen (keyseq))); |
| |
| /* Translate the ASCII representation of KEYSEQ into an array of |
| characters. Stuff the characters into KEYS, and the length of |
| KEYS into KEYS_LEN. */ |
| if (rl_translate_keyseq (keyseq, keys, &keys_len)) |
| { |
| xfree (keys); |
| return -1; |
| } |
| |
| /* Bind keys, making new keymaps as necessary. */ |
| for (i = 0; i < keys_len; i++) |
| { |
| unsigned char uc = keys[i]; |
| int ic; |
| |
| ic = uc; |
| if (ic < 0 || ic >= KEYMAP_SIZE) |
| { |
| xfree (keys); |
| return -1; |
| } |
| |
| if (META_CHAR (ic) && _rl_convert_meta_chars_to_ascii) |
| { |
| ic = UNMETA (ic); |
| if (map[ESC].type == ISKMAP) |
| map = FUNCTION_TO_KEYMAP (map, ESC); |
| } |
| |
| if ((i + 1) < keys_len) |
| { |
| if (map[ic].type != ISKMAP) |
| { |
| /* We allow subsequences of keys. If a keymap is being |
| created that will `shadow' an existing function or macro |
| key binding, we save that keybinding into the ANYOTHERKEY |
| index in the new map. The dispatch code will look there |
| to find the function to execute if the subsequence is not |
| matched. ANYOTHERKEY was chosen to be greater than |
| UCHAR_MAX. */ |
| k = map[ic]; |
| |
| map[ic].type = ISKMAP; |
| map[ic].function = KEYMAP_TO_FUNCTION (rl_make_bare_keymap()); |
| } |
| map = FUNCTION_TO_KEYMAP (map, ic); |
| /* The dispatch code will return this function if no matching |
| key sequence is found in the keymap. This (with a little |
| help from the dispatch code in readline.c) allows `a' to be |
| mapped to something, `abc' to be mapped to something else, |
| and the function bound to `a' to be executed when the user |
| types `abx', leaving `bx' in the input queue. */ |
| if (k.function && ((k.type == ISFUNC && k.function != rl_do_lowercase_version) || k.type == ISMACR)) |
| { |
| map[ANYOTHERKEY] = k; |
| k.function = 0; |
| } |
| } |
| else |
| { |
| if (map[ic].type == ISMACR) |
| xfree ((char *)map[ic].function); |
| else if (map[ic].type == ISKMAP) |
| { |
| map = FUNCTION_TO_KEYMAP (map, ic); |
| ic = ANYOTHERKEY; |
| /* If we're trying to override a keymap with a null function |
| (e.g., trying to unbind it), we can't use a null pointer |
| here because that's indistinguishable from having not been |
| overridden. We use a special bindable function that does |
| nothing. */ |
| if (type == ISFUNC && data == 0) |
| data = (char *)_rl_null_function; |
| } |
| |
| map[ic].function = KEYMAP_TO_FUNCTION (data); |
| map[ic].type = type; |
| } |
| |
| rl_binding_keymap = map; |
| } |
| xfree (keys); |
| return 0; |
| } |
| |
| /* Translate the ASCII representation of SEQ, stuffing the values into ARRAY, |
| an array of characters. LEN gets the final length of ARRAY. Return |
| non-zero if there was an error parsing SEQ. */ |
| int |
| rl_translate_keyseq (seq, array, len) |
| const char *seq; |
| char *array; |
| int *len; |
| { |
| register int i, c, l, temp; |
| |
| for (i = l = 0; c = seq[i]; i++) |
| { |
| if (c == '\\') |
| { |
| c = seq[++i]; |
| |
| if (c == 0) |
| break; |
| |
| /* Handle \C- and \M- prefixes. */ |
| if ((c == 'C' || c == 'M') && seq[i + 1] == '-') |
| { |
| /* Handle special case of backwards define. */ |
| if (strncmp (&seq[i], "C-\\M-", 5) == 0) |
| { |
| array[l++] = ESC; /* ESC is meta-prefix */ |
| i += 5; |
| array[l++] = CTRL (_rl_to_upper (seq[i])); |
| if (seq[i] == '\0') |
| i--; |
| } |
| else if (c == 'M') |
| { |
| i++; /* seq[i] == '-' */ |
| /* XXX - obey convert-meta setting */ |
| if (_rl_convert_meta_chars_to_ascii && _rl_keymap[ESC].type == ISKMAP) |
| array[l++] = ESC; /* ESC is meta-prefix */ |
| else if (seq[i+1] == '\\' && seq[i+2] == 'C' && seq[i+3] == '-') |
| { |
| i += 4; |
| temp = (seq[i] == '?') ? RUBOUT : CTRL (_rl_to_upper (seq[i])); |
| array[l++] = META (temp); |
| } |
| else |
| { |
| /* This doesn't yet handle things like \M-\a, which may |
| or may not have any reasonable meaning. You're |
| probably better off using straight octal or hex. */ |
| i++; |
| array[l++] = META (seq[i]); |
| } |
| } |
| else if (c == 'C') |
| { |
| i += 2; |
| /* Special hack for C-?... */ |
| array[l++] = (seq[i] == '?') ? RUBOUT : CTRL (_rl_to_upper (seq[i])); |
| } |
| continue; |
| } |
| |
| /* Translate other backslash-escaped characters. These are the |
| same escape sequences that bash's `echo' and `printf' builtins |
| handle, with the addition of \d -> RUBOUT. A backslash |
| preceding a character that is not special is stripped. */ |
| switch (c) |
| { |
| case 'a': |
| array[l++] = '\007'; |
| break; |
| case 'b': |
| array[l++] = '\b'; |
| break; |
| case 'd': |
| array[l++] = RUBOUT; /* readline-specific */ |
| break; |
| case 'e': |
| array[l++] = ESC; |
| break; |
| case 'f': |
| array[l++] = '\f'; |
| break; |
| case 'n': |
| array[l++] = NEWLINE; |
| break; |
| case 'r': |
| array[l++] = RETURN; |
| break; |
| case 't': |
| array[l++] = TAB; |
| break; |
| case 'v': |
| array[l++] = 0x0B; |
| break; |
| case '\\': |
| array[l++] = '\\'; |
| break; |
| case '0': case '1': case '2': case '3': |
| case '4': case '5': case '6': case '7': |
| i++; |
| for (temp = 2, c -= '0'; ISOCTAL (seq[i]) && temp--; i++) |
| c = (c * 8) + OCTVALUE (seq[i]); |
| i--; /* auto-increment in for loop */ |
| array[l++] = c & largest_char; |
| break; |
| case 'x': |
| i++; |
| for (temp = 2, c = 0; ISXDIGIT ((unsigned char)seq[i]) && temp--; i++) |
| c = (c * 16) + HEXVALUE (seq[i]); |
| if (temp == 2) |
| c = 'x'; |
| i--; /* auto-increment in for loop */ |
| array[l++] = c & largest_char; |
| break; |
| default: /* backslashes before non-special chars just add the char */ |
| array[l++] = c; |
| break; /* the backslash is stripped */ |
| } |
| continue; |
| } |
| |
| array[l++] = c; |
| } |
| |
| *len = l; |
| array[l] = '\0'; |
| return (0); |
| } |
| |
| char * |
| rl_untranslate_keyseq (seq) |
| int seq; |
| { |
| static char kseq[16]; |
| int i, c; |
| |
| i = 0; |
| c = seq; |
| if (META_CHAR (c)) |
| { |
| kseq[i++] = '\\'; |
| kseq[i++] = 'M'; |
| kseq[i++] = '-'; |
| c = UNMETA (c); |
| } |
| else if (c == ESC) |
| { |
| kseq[i++] = '\\'; |
| c = 'e'; |
| } |
| else if (CTRL_CHAR (c)) |
| { |
| kseq[i++] = '\\'; |
| kseq[i++] = 'C'; |
| kseq[i++] = '-'; |
| c = _rl_to_lower (UNCTRL (c)); |
| } |
| else if (c == RUBOUT) |
| { |
| kseq[i++] = '\\'; |
| kseq[i++] = 'C'; |
| kseq[i++] = '-'; |
| c = '?'; |
| } |
| |
| if (c == ESC) |
| { |
| kseq[i++] = '\\'; |
| c = 'e'; |
| } |
| else if (c == '\\' || c == '"') |
| { |
| kseq[i++] = '\\'; |
| } |
| |
| kseq[i++] = (unsigned char) c; |
| kseq[i] = '\0'; |
| return kseq; |
| } |
| |
| static char * |
| _rl_untranslate_macro_value (seq) |
| char *seq; |
| { |
| char *ret, *r, *s; |
| int c; |
| |
| r = ret = (char *)xmalloc (7 * strlen (seq) + 1); |
| for (s = seq; *s; s++) |
| { |
| c = *s; |
| if (META_CHAR (c)) |
| { |
| *r++ = '\\'; |
| *r++ = 'M'; |
| *r++ = '-'; |
| c = UNMETA (c); |
| } |
| else if (c == ESC) |
| { |
| *r++ = '\\'; |
| c = 'e'; |
| } |
| else if (CTRL_CHAR (c)) |
| { |
| *r++ = '\\'; |
| *r++ = 'C'; |
| *r++ = '-'; |
| c = _rl_to_lower (UNCTRL (c)); |
| } |
| else if (c == RUBOUT) |
| { |
| *r++ = '\\'; |
| *r++ = 'C'; |
| *r++ = '-'; |
| c = '?'; |
| } |
| |
| if (c == ESC) |
| { |
| *r++ = '\\'; |
| c = 'e'; |
| } |
| else if (c == '\\' || c == '"') |
| *r++ = '\\'; |
| |
| *r++ = (unsigned char)c; |
| } |
| *r = '\0'; |
| return ret; |
| } |
| |
| /* Return a pointer to the function that STRING represents. |
| If STRING doesn't have a matching function, then a NULL pointer |
| is returned. */ |
| rl_command_func_t * |
| rl_named_function (string) |
| const char *string; |
| { |
| register int i; |
| |
| rl_initialize_funmap (); |
| |
| for (i = 0; funmap[i]; i++) |
| if (_rl_stricmp (funmap[i]->name, string) == 0) |
| return (funmap[i]->function); |
| return ((rl_command_func_t *)NULL); |
| } |
| |
| /* Return the function (or macro) definition which would be invoked via |
| KEYSEQ if executed in MAP. If MAP is NULL, then the current keymap is |
| used. TYPE, if non-NULL, is a pointer to an int which will receive the |
| type of the object pointed to. One of ISFUNC (function), ISKMAP (keymap), |
| or ISMACR (macro). */ |
| rl_command_func_t * |
| rl_function_of_keyseq (keyseq, map, type) |
| const char *keyseq; |
| Keymap map; |
| int *type; |
| { |
| register int i; |
| |
| if (map == 0) |
| map = _rl_keymap; |
| |
| for (i = 0; keyseq && keyseq[i]; i++) |
| { |
| unsigned char ic = keyseq[i]; |
| |
| if (META_CHAR (ic) && _rl_convert_meta_chars_to_ascii) |
| { |
| if (map[ESC].type == ISKMAP) |
| { |
| map = FUNCTION_TO_KEYMAP (map, ESC); |
| ic = UNMETA (ic); |
| } |
| /* XXX - should we just return NULL here, since this obviously |
| doesn't match? */ |
| else |
| { |
| if (type) |
| *type = map[ESC].type; |
| |
| return (map[ESC].function); |
| } |
| } |
| |
| if (map[ic].type == ISKMAP) |
| { |
| /* If this is the last key in the key sequence, return the |
| map. */ |
| if (keyseq[i + 1] == '\0') |
| { |
| if (type) |
| *type = ISKMAP; |
| |
| return (map[ic].function); |
| } |
| else |
| map = FUNCTION_TO_KEYMAP (map, ic); |
| } |
| /* If we're not at the end of the key sequence, and the current key |
| is bound to something other than a keymap, then the entire key |
| sequence is not bound. */ |
| else if (map[ic].type != ISKMAP && keyseq[i+1]) |
| return ((rl_command_func_t *)NULL); |
| else /* map[ic].type != ISKMAP && keyseq[i+1] == 0 */ |
| { |
| if (type) |
| *type = map[ic].type; |
| |
| return (map[ic].function); |
| } |
| } |
| return ((rl_command_func_t *) NULL); |
| } |
| |
| /* The last key bindings file read. */ |
| static char *last_readline_init_file = (char *)NULL; |
| |
| /* The file we're currently reading key bindings from. */ |
| static const char *current_readline_init_file; |
| static int current_readline_init_include_level; |
| static int current_readline_init_lineno; |
| |
| /* Read FILENAME into a locally-allocated buffer and return the buffer. |
| The size of the buffer is returned in *SIZEP. Returns NULL if any |
| errors were encountered. */ |
| static char * |
| _rl_read_file (filename, sizep) |
| char *filename; |
| size_t *sizep; |
| { |
| struct stat finfo; |
| size_t file_size; |
| char *buffer; |
| int i, file; |
| |
| if ((stat (filename, &finfo) < 0) || (file = open (filename, O_RDONLY, 0666)) < 0) |
| return ((char *)NULL); |
| |
| file_size = (size_t)finfo.st_size; |
| |
| /* check for overflow on very large files */ |
| if (file_size != finfo.st_size || file_size + 1 < file_size) |
| { |
| if (file >= 0) |
| close (file); |
| #if defined (EFBIG) |
| errno = EFBIG; |
| #endif |
| return ((char *)NULL); |
| } |
| |
| /* Read the file into BUFFER. */ |
| buffer = (char *)xmalloc (file_size + 1); |
| i = read (file, buffer, file_size); |
| close (file); |
| |
| if (i < 0) |
| { |
| xfree (buffer); |
| return ((char *)NULL); |
| } |
| |
| RL_CHECK_SIGNALS (); |
| |
| buffer[i] = '\0'; |
| if (sizep) |
| *sizep = i; |
| |
| return (buffer); |
| } |
| |
| /* Re-read the current keybindings file. */ |
| int |
| rl_re_read_init_file (count, ignore) |
| int count, ignore; |
| { |
| int r; |
| r = rl_read_init_file ((const char *)NULL); |
| rl_set_keymap_from_edit_mode (); |
| return r; |
| } |
| |
| /* Do key bindings from a file. If FILENAME is NULL it defaults |
| to the first non-null filename from this list: |
| 1. the filename used for the previous call |
| 2. the value of the shell variable `INPUTRC' |
| 3. ~/.inputrc |
| 4. /etc/inputrc |
| If the file existed and could be opened and read, 0 is returned, |
| otherwise errno is returned. */ |
| int |
| rl_read_init_file (filename) |
| const char *filename; |
| { |
| /* Default the filename. */ |
| if (filename == 0) |
| filename = last_readline_init_file; |
| if (filename == 0) |
| filename = sh_get_env_value ("INPUTRC"); |
| if (filename == 0 || *filename == 0) |
| { |
| filename = DEFAULT_INPUTRC; |
| /* Try to read DEFAULT_INPUTRC; fall back to SYS_INPUTRC on failure */ |
| if (_rl_read_init_file (filename, 0) == 0) |
| return 0; |
| filename = SYS_INPUTRC; |
| } |
| |
| #if defined (__MSDOS__) |
| if (_rl_read_init_file (filename, 0) == 0) |
| return 0; |
| filename = "~/_inputrc"; |
| #endif |
| return (_rl_read_init_file (filename, 0)); |
| } |
| |
| static int |
| _rl_read_init_file (filename, include_level) |
| const char *filename; |
| int include_level; |
| { |
| register int i; |
| char *buffer, *openname, *line, *end; |
| size_t file_size; |
| |
| current_readline_init_file = filename; |
| current_readline_init_include_level = include_level; |
| |
| openname = tilde_expand (filename); |
| buffer = _rl_read_file (openname, &file_size); |
| xfree (openname); |
| |
| RL_CHECK_SIGNALS (); |
| if (buffer == 0) |
| return (errno); |
| |
| if (include_level == 0 && filename != last_readline_init_file) |
| { |
| FREE (last_readline_init_file); |
| last_readline_init_file = savestring (filename); |
| } |
| |
| currently_reading_init_file = 1; |
| |
| /* Loop over the lines in the file. Lines that start with `#' are |
| comments; all other lines are commands for readline initialization. */ |
| current_readline_init_lineno = 1; |
| line = buffer; |
| end = buffer + file_size; |
| while (line < end) |
| { |
| /* Find the end of this line. */ |
| for (i = 0; line + i != end && line[i] != '\n'; i++); |
| |
| #if defined (__CYGWIN__) |
| /* ``Be liberal in what you accept.'' */ |
| if (line[i] == '\n' && line[i-1] == '\r') |
| line[i - 1] = '\0'; |
| #endif |
| |
| /* Mark end of line. */ |
| line[i] = '\0'; |
| |
| /* Skip leading whitespace. */ |
| while (*line && whitespace (*line)) |
| { |
| line++; |
| i--; |
| } |
| |
| /* If the line is not a comment, then parse it. */ |
| if (*line && *line != '#') |
| rl_parse_and_bind (line); |
| |
| /* Move to the next line. */ |
| line += i + 1; |
| current_readline_init_lineno++; |
| } |
| |
| xfree (buffer); |
| currently_reading_init_file = 0; |
| return (0); |
| } |
| |
| static void |
| _rl_init_file_error (msg) |
| const char *msg; |
| { |
| if (currently_reading_init_file) |
| _rl_errmsg ("%s: line %d: %s\n", current_readline_init_file, |
| current_readline_init_lineno, msg); |
| else |
| _rl_errmsg ("%s", msg); |
| } |
| |
| /* **************************************************************** */ |
| /* */ |
| /* Parser Directives */ |
| /* */ |
| /* **************************************************************** */ |
| |
| typedef int _rl_parser_func_t PARAMS((char *)); |
| |
| /* Things that mean `Control'. */ |
| const char * const _rl_possible_control_prefixes[] = { |
| "Control-", "C-", "CTRL-", (const char *)NULL |
| }; |
| |
| const char * const _rl_possible_meta_prefixes[] = { |
| "Meta", "M-", (const char *)NULL |
| }; |
| |
| /* Conditionals. */ |
| |
| /* Calling programs set this to have their argv[0]. */ |
| const char *rl_readline_name = "other"; |
| |
| /* Stack of previous values of parsing_conditionalized_out. */ |
| static unsigned char *if_stack = (unsigned char *)NULL; |
| static int if_stack_depth; |
| static int if_stack_size; |
| |
| /* Push _rl_parsing_conditionalized_out, and set parser state based |
| on ARGS. */ |
| static int |
| parser_if (args) |
| char *args; |
| { |
| register int i; |
| |
| /* Push parser state. */ |
| if (if_stack_depth + 1 >= if_stack_size) |
| { |
| if (!if_stack) |
| if_stack = (unsigned char *)xmalloc (if_stack_size = 20); |
| else |
| if_stack = (unsigned char *)xrealloc (if_stack, if_stack_size += 20); |
| } |
| if_stack[if_stack_depth++] = _rl_parsing_conditionalized_out; |
| |
| /* If parsing is turned off, then nothing can turn it back on except |
| for finding the matching endif. In that case, return right now. */ |
| if (_rl_parsing_conditionalized_out) |
| return 0; |
| |
| /* Isolate first argument. */ |
| for (i = 0; args[i] && !whitespace (args[i]); i++); |
| |
| if (args[i]) |
| args[i++] = '\0'; |
| |
| /* Handle "$if term=foo" and "$if mode=emacs" constructs. If this |
| isn't term=foo, or mode=emacs, then check to see if the first |
| word in ARGS is the same as the value stored in rl_readline_name. */ |
| if (rl_terminal_name && _rl_strnicmp (args, "term=", 5) == 0) |
| { |
| char *tem, *tname; |
| |
| /* Terminals like "aaa-60" are equivalent to "aaa". */ |
| tname = savestring (rl_terminal_name); |
| tem = strchr (tname, '-'); |
| if (tem) |
| *tem = '\0'; |
| |
| /* Test the `long' and `short' forms of the terminal name so that |
| if someone has a `sun-cmd' and does not want to have bindings |
| that will be executed if the terminal is a `sun', they can put |
| `$if term=sun-cmd' into their .inputrc. */ |
| _rl_parsing_conditionalized_out = _rl_stricmp (args + 5, tname) && |
| _rl_stricmp (args + 5, rl_terminal_name); |
| xfree (tname); |
| } |
| #if defined (VI_MODE) |
| else if (_rl_strnicmp (args, "mode=", 5) == 0) |
| { |
| int mode; |
| |
| if (_rl_stricmp (args + 5, "emacs") == 0) |
| mode = emacs_mode; |
| else if (_rl_stricmp (args + 5, "vi") == 0) |
| mode = vi_mode; |
| else |
| mode = no_mode; |
| |
| _rl_parsing_conditionalized_out = mode != rl_editing_mode; |
| } |
| #endif /* VI_MODE */ |
| /* Check to see if the first word in ARGS is the same as the |
| value stored in rl_readline_name. */ |
| else if (_rl_stricmp (args, rl_readline_name) == 0) |
| _rl_parsing_conditionalized_out = 0; |
| else |
| _rl_parsing_conditionalized_out = 1; |
| return 0; |
| } |
| |
| /* Invert the current parser state if there is anything on the stack. */ |
| static int |
| parser_else (args) |
| char *args; |
| { |
| register int i; |
| |
| if (if_stack_depth == 0) |
| { |
| _rl_init_file_error ("$else found without matching $if"); |
| return 0; |
| } |
| |
| #if 0 |
| /* Check the previous (n - 1) levels of the stack to make sure that |
| we haven't previously turned off parsing. */ |
| for (i = 0; i < if_stack_depth - 1; i++) |
| #else |
| /* Check the previous (n) levels of the stack to make sure that |
| we haven't previously turned off parsing. */ |
| for (i = 0; i < if_stack_depth; i++) |
| #endif |
| if (if_stack[i] == 1) |
| return 0; |
| |
| /* Invert the state of parsing if at top level. */ |
| _rl_parsing_conditionalized_out = !_rl_parsing_conditionalized_out; |
| return 0; |
| } |
| |
| /* Terminate a conditional, popping the value of |
| _rl_parsing_conditionalized_out from the stack. */ |
| static int |
| parser_endif (args) |
| char *args; |
| { |
| if (if_stack_depth) |
| _rl_parsing_conditionalized_out = if_stack[--if_stack_depth]; |
| else |
| _rl_init_file_error ("$endif without matching $if"); |
| return 0; |
| } |
| |
| static int |
| parser_include (args) |
| char *args; |
| { |
| const char *old_init_file; |
| char *e; |
| int old_line_number, old_include_level, r; |
| |
| if (_rl_parsing_conditionalized_out) |
| return (0); |
| |
| old_init_file = current_readline_init_file; |
| old_line_number = current_readline_init_lineno; |
| old_include_level = current_readline_init_include_level; |
| |
| e = strchr (args, '\n'); |
| if (e) |
| *e = '\0'; |
| r = _rl_read_init_file ((const char *)args, old_include_level + 1); |
| |
| current_readline_init_file = old_init_file; |
| current_readline_init_lineno = old_line_number; |
| current_readline_init_include_level = old_include_level; |
| |
| return r; |
| } |
| |
| /* Associate textual names with actual functions. */ |
| static const struct { |
| const char * const name; |
| _rl_parser_func_t *function; |
| } parser_directives [] = { |
| { "if", parser_if }, |
| { "endif", parser_endif }, |
| { "else", parser_else }, |
| { "include", parser_include }, |
| { (char *)0x0, (_rl_parser_func_t *)0x0 } |
| }; |
| |
| /* Handle a parser directive. STATEMENT is the line of the directive |
| without any leading `$'. */ |
| static int |
| handle_parser_directive (statement) |
| char *statement; |
| { |
| register int i; |
| char *directive, *args; |
| |
| /* Isolate the actual directive. */ |
| |
| /* Skip whitespace. */ |
| for (i = 0; whitespace (statement[i]); i++); |
| |
| directive = &statement[i]; |
| |
| for (; statement[i] && !whitespace (statement[i]); i++); |
| |
| if (statement[i]) |
| statement[i++] = '\0'; |
| |
| for (; statement[i] && whitespace (statement[i]); i++); |
| |
| args = &statement[i]; |
| |
| /* Lookup the command, and act on it. */ |
| for (i = 0; parser_directives[i].name; i++) |
| if (_rl_stricmp (directive, parser_directives[i].name) == 0) |
| { |
| (*parser_directives[i].function) (args); |
| return (0); |
| } |
| |
| /* display an error message about the unknown parser directive */ |
| _rl_init_file_error ("unknown parser directive"); |
| return (1); |
| } |
| |
| /* Read the binding command from STRING and perform it. |
| A key binding command looks like: Keyname: function-name\0, |
| a variable binding command looks like: set variable value. |
| A new-style keybinding looks like "\C-x\C-x": exchange-point-and-mark. */ |
| int |
| rl_parse_and_bind (string) |
| char *string; |
| { |
| char *funname, *kname; |
| register int c, i; |
| int key, equivalency; |
| |
| while (string && whitespace (*string)) |
| string++; |
| |
| if (!string || !*string || *string == '#') |
| return 0; |
| |
| /* If this is a parser directive, act on it. */ |
| if (*string == '$') |
| { |
| handle_parser_directive (&string[1]); |
| return 0; |
| } |
| |
| /* If we aren't supposed to be parsing right now, then we're done. */ |
| if (_rl_parsing_conditionalized_out) |
| return 0; |
| |
| i = 0; |
| /* If this keyname is a complex key expression surrounded by quotes, |
| advance to after the matching close quote. This code allows the |
| backslash to quote characters in the key expression. */ |
| if (*string == '"') |
| { |
| int passc = 0; |
| |
| for (i = 1; c = string[i]; i++) |
| { |
| if (passc) |
| { |
| passc = 0; |
| continue; |
| } |
| |
| if (c == '\\') |
| { |
| passc++; |
| continue; |
| } |
| |
| if (c == '"') |
| break; |
| } |
| /* If we didn't find a closing quote, abort the line. */ |
| if (string[i] == '\0') |
| { |
| _rl_init_file_error ("no closing `\"' in key binding"); |
| return 1; |
| } |
| } |
| |
| /* Advance to the colon (:) or whitespace which separates the two objects. */ |
| for (; (c = string[i]) && c != ':' && c != ' ' && c != '\t'; i++ ); |
| |
| equivalency = (c == ':' && string[i + 1] == '='); |
| |
| /* Mark the end of the command (or keyname). */ |
| if (string[i]) |
| string[i++] = '\0'; |
| |
| /* If doing assignment, skip the '=' sign as well. */ |
| if (equivalency) |
| string[i++] = '\0'; |
| |
| /* If this is a command to set a variable, then do that. */ |
| if (_rl_stricmp (string, "set") == 0) |
| { |
| char *var, *value, *e; |
| |
| var = string + i; |
| /* Make VAR point to start of variable name. */ |
| while (*var && whitespace (*var)) var++; |
| |
| /* Make VALUE point to start of value string. */ |
| value = var; |
| while (*value && !whitespace (*value)) value++; |
| if (*value) |
| *value++ = '\0'; |
| while (*value && whitespace (*value)) value++; |
| |
| /* Strip trailing whitespace from values to boolean variables. Temp |
| fix until I get a real quoted-string parser here. */ |
| i = find_boolean_var (var); |
| if (i >= 0) |
| { |
| /* remove trailing whitespace */ |
| e = value + strlen (value) - 1; |
| while (e >= value && whitespace (*e)) |
| e--; |
| e++; /* skip back to whitespace or EOS */ |
| if (*e && e >= value) |
| *e = '\0'; |
| } |
| |
| rl_variable_bind (var, value); |
| return 0; |
| } |
| |
| /* Skip any whitespace between keyname and funname. */ |
| for (; string[i] && whitespace (string[i]); i++); |
| funname = &string[i]; |
| |
| /* Now isolate funname. |
| For straight function names just look for whitespace, since |
| that will signify the end of the string. But this could be a |
| macro definition. In that case, the string is quoted, so skip |
| to the matching delimiter. We allow the backslash to quote the |
| delimiter characters in the macro body. */ |
| /* This code exists to allow whitespace in macro expansions, which |
| would otherwise be gobbled up by the next `for' loop.*/ |
| /* XXX - it may be desirable to allow backslash quoting only if " is |
| the quoted string delimiter, like the shell. */ |
| if (*funname == '\'' || *funname == '"') |
| { |
| int delimiter, passc; |
| |
| delimiter = string[i++]; |
| for (passc = 0; c = string[i]; i++) |
| { |
| if (passc) |
| { |
| passc = 0; |
| continue; |
| } |
| |
| if (c == '\\') |
| { |
| passc = 1; |
| continue; |
| } |
| |
| if (c == delimiter) |
| break; |
| } |
| if (c) |
| i++; |
| } |
| |
| /* Advance to the end of the string. */ |
| for (; string[i] && !whitespace (string[i]); i++); |
| |
| /* No extra whitespace at the end of the string. */ |
| string[i] = '\0'; |
| |
| /* Handle equivalency bindings here. Make the left-hand side be exactly |
| whatever the right-hand evaluates to, including keymaps. */ |
| if (equivalency) |
| { |
| return 0; |
| } |
| |
| /* If this is a new-style key-binding, then do the binding with |
| rl_bind_keyseq (). Otherwise, let the older code deal with it. */ |
| if (*string == '"') |
| { |
| char *seq; |
| register int j, k, passc; |
| |
| seq = (char *)xmalloc (1 + strlen (string)); |
| for (j = 1, k = passc = 0; string[j]; j++) |
| { |
| /* Allow backslash to quote characters, but leave them in place. |
| This allows a string to end with a backslash quoting another |
| backslash, or with a backslash quoting a double quote. The |
| backslashes are left in place for rl_translate_keyseq (). */ |
| if (passc || (string[j] == '\\')) |
| { |
| seq[k++] = string[j]; |
| passc = !passc; |
| continue; |
| } |
| |
| if (string[j] == '"') |
| break; |
| |
| seq[k++] = string[j]; |
| } |
| seq[k] = '\0'; |
| |
| /* Binding macro? */ |
| if (*funname == '\'' || *funname == '"') |
| { |
| j = strlen (funname); |
| |
| /* Remove the delimiting quotes from each end of FUNNAME. */ |
| if (j && funname[j - 1] == *funname) |
| funname[j - 1] = '\0'; |
| |
| rl_macro_bind (seq, &funname[1], _rl_keymap); |
| } |
| else |
| rl_bind_keyseq (seq, rl_named_function (funname)); |
| |
| xfree (seq); |
| return 0; |
| } |
| |
| /* Get the actual character we want to deal with. */ |
| kname = strrchr (string, '-'); |
| if (!kname) |
| kname = string; |
| else |
| kname++; |
| |
| key = glean_key_from_name (kname); |
| |
| /* Add in control and meta bits. */ |
| if (substring_member_of_array (string, _rl_possible_control_prefixes)) |
| key = CTRL (_rl_to_upper (key)); |
| |
| if (substring_member_of_array (string, _rl_possible_meta_prefixes)) |
| key = META (key); |
| |
| /* Temporary. Handle old-style keyname with macro-binding. */ |
| if (*funname == '\'' || *funname == '"') |
| { |
| char useq[2]; |
| int fl = strlen (funname); |
| |
| useq[0] = key; useq[1] = '\0'; |
| if (fl && funname[fl - 1] == *funname) |
| funname[fl - 1] = '\0'; |
| |
| rl_macro_bind (useq, &funname[1], _rl_keymap); |
| } |
| #if defined (PREFIX_META_HACK) |
| /* Ugly, but working hack to keep prefix-meta around. */ |
| else if (_rl_stricmp (funname, "prefix-meta") == 0) |
| { |
| char seq[2]; |
| |
| seq[0] = key; |
| seq[1] = '\0'; |
| rl_generic_bind (ISKMAP, seq, (char *)emacs_meta_keymap, _rl_keymap); |
| } |
| #endif /* PREFIX_META_HACK */ |
| else |
| rl_bind_key (key, rl_named_function (funname)); |
| return 0; |
| } |
| |
| /* Simple structure for boolean readline variables (i.e., those that can |
| have one of two values; either "On" or 1 for truth, or "Off" or 0 for |
| false. */ |
| |
| #define V_SPECIAL 0x1 |
| |
| static const struct { |
| const char * const name; |
| int *value; |
| int flags; |
| } boolean_varlist [] = { |
| { "bind-tty-special-chars", &_rl_bind_stty_chars, 0 }, |
| { "blink-matching-paren", &rl_blink_matching_paren, V_SPECIAL }, |
| { "byte-oriented", &rl_byte_oriented, 0 }, |
| { "completion-ignore-case", &_rl_completion_case_fold, 0 }, |
| { "completion-map-case", &_rl_completion_case_map, 0 }, |
| { "convert-meta", &_rl_convert_meta_chars_to_ascii, 0 }, |
| { "disable-completion", &rl_inhibit_completion, 0 }, |
| { "echo-control-characters", &_rl_echo_control_chars, 0 }, |
| { "enable-keypad", &_rl_enable_keypad, 0 }, |
| { "enable-meta-key", &_rl_enable_meta, 0 }, |
| { "expand-tilde", &rl_complete_with_tilde_expansion, 0 }, |
| { "history-preserve-point", &_rl_history_preserve_point, 0 }, |
| { "horizontal-scroll-mode", &_rl_horizontal_scroll_mode, 0 }, |
| { "input-meta", &_rl_meta_flag, 0 }, |
| { "mark-directories", &_rl_complete_mark_directories, 0 }, |
| { "mark-modified-lines", &_rl_mark_modified_lines, 0 }, |
| { "mark-symlinked-directories", &_rl_complete_mark_symlink_dirs, 0 }, |
| { "match-hidden-files", &_rl_match_hidden_files, 0 }, |
| { "menu-complete-display-prefix", &_rl_menu_complete_prefix_first, 0 }, |
| { "meta-flag", &_rl_meta_flag, 0 }, |
| { "output-meta", &_rl_output_meta_chars, 0 }, |
| { "page-completions", &_rl_page_completions, 0 }, |
| { "prefer-visible-bell", &_rl_prefer_visible_bell, V_SPECIAL }, |
| { "print-completions-horizontally", &_rl_print_completions_horizontally, 0 }, |
| { "revert-all-at-newline", &_rl_revert_all_at_newline, 0 }, |
| { "show-all-if-ambiguous", &_rl_complete_show_all, 0 }, |
| { "show-all-if-unmodified", &_rl_complete_show_unmodified, 0 }, |
| { "skip-completed-text", &_rl_skip_completed_text, 0 }, |
| #if defined (VISIBLE_STATS) |
| { "visible-stats", &rl_visible_stats, 0 }, |
| #endif /* VISIBLE_STATS */ |
| { (char *)NULL, (int *)NULL, 0 } |
| }; |
| |
| static int |
| find_boolean_var (name) |
| const char *name; |
| { |
| register int i; |
| |
| for (i = 0; boolean_varlist[i].name; i++) |
| if (_rl_stricmp (name, boolean_varlist[i].name) == 0) |
| return i; |
| return -1; |
| } |
| |
| /* Hooks for handling special boolean variables, where a |
| function needs to be called or another variable needs |
| to be changed when they're changed. */ |
| static void |
| hack_special_boolean_var (i) |
| int i; |
| { |
| const char *name; |
| |
| name = boolean_varlist[i].name; |
| |
| if (_rl_stricmp (name, "blink-matching-paren") == 0) |
| _rl_enable_paren_matching (rl_blink_matching_paren); |
| else if (_rl_stricmp (name, "prefer-visible-bell") == 0) |
| { |
| if (_rl_prefer_visible_bell) |
| _rl_bell_preference = VISIBLE_BELL; |
| else |
| _rl_bell_preference = AUDIBLE_BELL; |
| } |
| } |
| |
| typedef int _rl_sv_func_t PARAMS((const char *)); |
| |
| /* These *must* correspond to the array indices for the appropriate |
| string variable. (Though they're not used right now.) */ |
| #define V_BELLSTYLE 0 |
| #define V_COMBEGIN 1 |
| #define V_EDITMODE 2 |
| #define V_ISRCHTERM 3 |
| #define V_KEYMAP 4 |
| |
| #define V_STRING 1 |
| #define V_INT 2 |
| |
| /* Forward declarations */ |
| static int sv_bell_style PARAMS((const char *)); |
| static int sv_combegin PARAMS((const char *)); |
| static int sv_dispprefix PARAMS((const char *)); |
| static int sv_compquery PARAMS((const char *)); |
| static int sv_compwidth PARAMS((const char *)); |
| static int sv_editmode PARAMS((const char *)); |
| static int sv_histsize PARAMS((const char *)); |
| static int sv_isrchterm PARAMS((const char *)); |
| static int sv_keymap PARAMS((const char *)); |
| |
| static const struct { |
| const char * const name; |
| int flags; |
| _rl_sv_func_t *set_func; |
| } string_varlist[] = { |
| { "bell-style", V_STRING, sv_bell_style }, |
| { "comment-begin", V_STRING, sv_combegin }, |
| { "completion-display-width", V_INT, sv_compwidth }, |
| { "completion-prefix-display-length", V_INT, sv_dispprefix }, |
| { "completion-query-items", V_INT, sv_compquery }, |
| { "editing-mode", V_STRING, sv_editmode }, |
| { "history-size", V_INT, sv_histsize }, |
| { "isearch-terminators", V_STRING, sv_isrchterm }, |
| { "keymap", V_STRING, sv_keymap }, |
| { (char *)NULL, 0, (_rl_sv_func_t *)0 } |
| }; |
| |
| static int |
| find_string_var (name) |
| const char *name; |
| { |
| register int i; |
| |
| for (i = 0; string_varlist[i].name; i++) |
| if (_rl_stricmp (name, string_varlist[i].name) == 0) |
| return i; |
| return -1; |
| } |
| |
| /* A boolean value that can appear in a `set variable' command is true if |
| the value is null or empty, `on' (case-insenstive), or "1". Any other |
| values result in 0 (false). */ |
| static int |
| bool_to_int (value) |
| const char *value; |
| { |
| return (value == 0 || *value == '\0' || |
| (_rl_stricmp (value, "on") == 0) || |
| (value[0] == '1' && value[1] == '\0')); |
| } |
| |
| char * |
| rl_variable_value (name) |
| const char *name; |
| { |
| register int i; |
| |
| /* Check for simple variables first. */ |
| i = find_boolean_var (name); |
| if (i >= 0) |
| return (*boolean_varlist[i].value ? "on" : "off"); |
| |
| i = find_string_var (name); |
| if (i >= 0) |
| return (_rl_get_string_variable_value (string_varlist[i].name)); |
| |
| /* Unknown variable names return NULL. */ |
| return 0; |
| } |
| |
| int |
| rl_variable_bind (name, value) |
| const char *name, *value; |
| { |
| register int i; |
| int v; |
| |
| /* Check for simple variables first. */ |
| i = find_boolean_var (name); |
| if (i >= 0) |
| { |
| *boolean_varlist[i].value = bool_to_int (value); |
| if (boolean_varlist[i].flags & V_SPECIAL) |
| hack_special_boolean_var (i); |
| return 0; |
| } |
| |
| i = find_string_var (name); |
| |
| /* For the time being, unknown variable names or string names without a |
| handler function are simply ignored. */ |
| if (i < 0 || string_varlist[i].set_func == 0) |
| return 0; |
| |
| v = (*string_varlist[i].set_func) (value); |
| return v; |
| } |
| |
| static int |
| sv_editmode (value) |
| const char *value; |
| { |
| if (_rl_strnicmp (value, "vi", 2) == 0) |
| { |
| #if defined (VI_MODE) |
| _rl_keymap = vi_insertion_keymap; |
| rl_editing_mode = vi_mode; |
| #endif /* VI_MODE */ |
| return 0; |
| } |
| else if (_rl_strnicmp (value, "emacs", 5) == 0) |
| { |
| _rl_keymap = emacs_standard_keymap; |
| rl_editing_mode = emacs_mode; |
| return 0; |
| } |
| return 1; |
| } |
| |
| static int |
| sv_combegin (value) |
| const char *value; |
| { |
| if (value && *value) |
| { |
| FREE (_rl_comment_begin); |
| _rl_comment_begin = savestring (value); |
| return 0; |
| } |
| return 1; |
| } |
| |
| static int |
| sv_dispprefix (value) |
| const char *value; |
| { |
| int nval = 0; |
| |
| if (value && *value) |
| { |
| nval = atoi (value); |
| if (nval < 0) |
| nval = 0; |
| } |
| _rl_completion_prefix_display_length = nval; |
| return 0; |
| } |
| |
| static int |
| sv_compquery (value) |
| const char *value; |
| { |
| int nval = 100; |
| |
| if (value && *value) |
| { |
| nval = atoi (value); |
| if (nval < 0) |
| nval = 0; |
| } |
| rl_completion_query_items = nval; |
| return 0; |
| } |
| |
| static int |
| sv_compwidth (value) |
| const char *value; |
| { |
| int nval = -1; |
| |
| if (value && *value) |
| nval = atoi (value); |
| |
| _rl_completion_columns = nval; |
| return 0; |
| } |
| |
| static int |
| sv_histsize (value) |
| const char *value; |
| { |
| int nval = 500; |
| |
| if (value && *value) |
| { |
| nval = atoi (value); |
| if (nval < 0) |
| return 1; |
| } |
| stifle_history (nval); |
| return 0; |
| } |
| |
| static int |
| sv_keymap (value) |
| const char *value; |
| { |
| Keymap kmap; |
| |
| kmap = rl_get_keymap_by_name (value); |
| if (kmap) |
| { |
| rl_set_keymap (kmap); |
| return 0; |
| } |
| return 1; |
| } |
| |
| static int |
| sv_bell_style (value) |
| const char *value; |
| { |
| if (value == 0 || *value == '\0') |
| _rl_bell_preference = AUDIBLE_BELL; |
| else if (_rl_stricmp (value, "none") == 0 || _rl_stricmp (value, "off") == 0) |
| _rl_bell_preference = NO_BELL; |
| else if (_rl_stricmp (value, "audible") == 0 || _rl_stricmp (value, "on") == 0) |
| _rl_bell_preference = AUDIBLE_BELL; |
| else if (_rl_stricmp (value, "visible") == 0) |
| _rl_bell_preference = VISIBLE_BELL; |
| else |
| return 1; |
| return 0; |
| } |
| |
| static int |
| sv_isrchterm (value) |
| const char *value; |
| { |
| int beg, end, delim; |
| char *v; |
| |
| if (value == 0) |
| return 1; |
| |
| /* Isolate the value and translate it into a character string. */ |
| v = savestring (value); |
| FREE (_rl_isearch_terminators); |
| if (v[0] == '"' || v[0] == '\'') |
| { |
| delim = v[0]; |
| for (beg = end = 1; v[end] && v[end] != delim; end++) |
| ; |
| } |
| else |
| { |
| for (beg = end = 0; whitespace (v[end]) == 0; end++) |
| ; |
| } |
| |
| v[end] = '\0'; |
| |
| /* The value starts at v + beg. Translate it into a character string. */ |
| _rl_isearch_terminators = (char *)xmalloc (2 * strlen (v) + 1); |
| rl_translate_keyseq (v + beg, _rl_isearch_terminators, &end); |
| _rl_isearch_terminators[end] = '\0'; |
| |
| xfree (v); |
| return 0; |
| } |
| |
| /* Return the character which matches NAME. |
| For example, `Space' returns ' '. */ |
| |
| typedef struct { |
| const char * const name; |
| int value; |
| } assoc_list; |
| |
| static const assoc_list name_key_alist[] = { |
| { "DEL", 0x7f }, |
| { "ESC", '\033' }, |
| { "Escape", '\033' }, |
| { "LFD", '\n' }, |
| { "Newline", '\n' }, |
| { "RET", '\r' }, |
| { "Return", '\r' }, |
| { "Rubout", 0x7f }, |
| { "SPC", ' ' }, |
| { "Space", ' ' }, |
| { "Tab", 0x09 }, |
| { (char *)0x0, 0 } |
| }; |
| |
| static int |
| glean_key_from_name (name) |
| char *name; |
| { |
| register int i; |
| |
| for (i = 0; name_key_alist[i].name; i++) |
| if (_rl_stricmp (name, name_key_alist[i].name) == 0) |
| return (name_key_alist[i].value); |
| |
| return (*(unsigned char *)name); /* XXX was return (*name) */ |
| } |
| |
| /* Auxiliary functions to manage keymaps. */ |
| static const struct { |
| const char * const name; |
| Keymap map; |
| } keymap_names[] = { |
| { "emacs", emacs_standard_keymap }, |
| { "emacs-standard", emacs_standard_keymap }, |
| { "emacs-meta", emacs_meta_keymap }, |
| { "emacs-ctlx", emacs_ctlx_keymap }, |
| #if defined (VI_MODE) |
| { "vi", vi_movement_keymap }, |
| { "vi-move", vi_movement_keymap }, |
| { "vi-command", vi_movement_keymap }, |
| { "vi-insert", vi_insertion_keymap }, |
| #endif /* VI_MODE */ |
| { (char *)0x0, (Keymap)0x0 } |
| }; |
| |
| Keymap |
| rl_get_keymap_by_name (name) |
| const char *name; |
| { |
| register int i; |
| |
| for (i = 0; keymap_names[i].name; i++) |
| if (_rl_stricmp (name, keymap_names[i].name) == 0) |
| return (keymap_names[i].map); |
| return ((Keymap) NULL); |
| } |
| |
| char * |
| rl_get_keymap_name (map) |
| Keymap map; |
| { |
| register int i; |
| for (i = 0; keymap_names[i].name; i++) |
| if (map == keymap_names[i].map) |
| return ((char *)keymap_names[i].name); |
| return ((char *)NULL); |
| } |
| |
| void |
| rl_set_keymap (map) |
| Keymap map; |
| { |
| if (map) |
| _rl_keymap = map; |
| } |
| |
| Keymap |
| rl_get_keymap () |
| { |
| return (_rl_keymap); |
| } |
| |
| void |
| rl_set_keymap_from_edit_mode () |
| { |
| if (rl_editing_mode == emacs_mode) |
| _rl_keymap = emacs_standard_keymap; |
| #if defined (VI_MODE) |
| else if (rl_editing_mode == vi_mode) |
| _rl_keymap = vi_insertion_keymap; |
| #endif /* VI_MODE */ |
| } |
| |
| char * |
| rl_get_keymap_name_from_edit_mode () |
| { |
| if (rl_editing_mode == emacs_mode) |
| return "emacs"; |
| #if defined (VI_MODE) |
| else if (rl_editing_mode == vi_mode) |
| return "vi"; |
| #endif /* VI_MODE */ |
| else |
| return "none"; |
| } |
| |
| /* **************************************************************** */ |
| /* */ |
| /* Key Binding and Function Information */ |
| /* */ |
| /* **************************************************************** */ |
| |
| /* Each of the following functions produces information about the |
| state of keybindings and functions known to Readline. The info |
| is always printed to rl_outstream, and in such a way that it can |
| be read back in (i.e., passed to rl_parse_and_bind ()). */ |
| |
| /* Print the names of functions known to Readline. */ |
| void |
| rl_list_funmap_names () |
| { |
| register int i; |
| const char **funmap_names; |
| |
| funmap_names = rl_funmap_names (); |
| |
| if (!funmap_names) |
| return; |
| |
| for (i = 0; funmap_names[i]; i++) |
| fprintf (rl_outstream, "%s\n", funmap_names[i]); |
| |
| xfree (funmap_names); |
| } |
| |
| static char * |
| _rl_get_keyname (key) |
| int key; |
| { |
| char *keyname; |
| int i, c; |
| |
| keyname = (char *)xmalloc (8); |
| |
| c = key; |
| /* Since this is going to be used to write out keysequence-function |
| pairs for possible inclusion in an inputrc file, we don't want to |
| do any special meta processing on KEY. */ |
| |
| #if 1 |
| /* XXX - Experimental */ |
| /* We might want to do this, but the old version of the code did not. */ |
| |
| /* If this is an escape character, we don't want to do any more processing. |
| Just add the special ESC key sequence and return. */ |
| if (c == ESC) |
| { |
| keyname[0] = '\\'; |
| keyname[1] = 'e'; |
| keyname[2] = '\0'; |
| return keyname; |
| } |
| #endif |
| |
| /* RUBOUT is translated directly into \C-? */ |
| if (key == RUBOUT) |
| { |
| keyname[0] = '\\'; |
| keyname[1] = 'C'; |
| keyname[2] = '-'; |
| keyname[3] = '?'; |
| keyname[4] = '\0'; |
| return keyname; |
| } |
| |
| i = 0; |
| /* Now add special prefixes needed for control characters. This can |
| potentially change C. */ |
| if (CTRL_CHAR (c)) |
| { |
| keyname[i++] = '\\'; |
| keyname[i++] = 'C'; |
| keyname[i++] = '-'; |
| c = _rl_to_lower (UNCTRL (c)); |
| } |
| |
| /* XXX experimental code. Turn the characters that are not ASCII or |
| ISO Latin 1 (128 - 159) into octal escape sequences (\200 - \237). |
| This changes C. */ |
| if (c >= 128 && c <= 159) |
| { |
| keyname[i++] = '\\'; |
| keyname[i++] = '2'; |
| c -= 128; |
| keyname[i++] = (c / 8) + '0'; |
| c = (c % 8) + '0'; |
| } |
| |
| /* Now, if the character needs to be quoted with a backslash, do that. */ |
| if (c == '\\' || c == '"') |
| keyname[i++] = '\\'; |
| |
| /* Now add the key, terminate the string, and return it. */ |
| keyname[i++] = (char) c; |
| keyname[i] = '\0'; |
| |
| return keyname; |
| } |
| |
| /* Return a NULL terminated array of strings which represent the key |
| sequences that are used to invoke FUNCTION in MAP. */ |
| char ** |
| rl_invoking_keyseqs_in_map (function, map) |
| rl_command_func_t *function; |
| Keymap map; |
| { |
| register int key; |
| char **result; |
| int result_index, result_size; |
| |
| result = (char **)NULL; |
| result_index = result_size = 0; |
| |
| for (key = 0; key < KEYMAP_SIZE; key++) |
| { |
| switch (map[key].type) |
| { |
| case ISMACR: |
| /* Macros match, if, and only if, the pointers are identical. |
| Thus, they are treated exactly like functions in here. */ |
| case ISFUNC: |
| /* If the function in the keymap is the one we are looking for, |
| then add the current KEY to the list of invoking keys. */ |
| if (map[key].function == function) |
| { |
| char *keyname; |
| |
| keyname = _rl_get_keyname (key); |
| |
| if (result_index + 2 > result_size) |
| { |
| result_size += 10; |
| result = (char **)xrealloc (result, result_size * sizeof (char *)); |
| } |
| |
| result[result_index++] = keyname; |
| result[result_index] = (char *)NULL; |
| } |
| break; |
| |
| case ISKMAP: |
| { |
| char **seqs; |
| register int i; |
| |
| /* Find the list of keyseqs in this map which have FUNCTION as |
| their target. Add the key sequences found to RESULT. */ |
| if (map[key].function) |
| seqs = |
| rl_invoking_keyseqs_in_map (function, FUNCTION_TO_KEYMAP (map, key)); |
| else |
| break; |
| |
| if (seqs == 0) |
| break; |
| |
| for (i = 0; seqs[i]; i++) |
| { |
| char *keyname = (char *)xmalloc (6 + strlen (seqs[i])); |
| |
| if (key == ESC) |
| { |
| /* If ESC is the meta prefix and we're converting chars |
| with the eighth bit set to ESC-prefixed sequences, then |
| we can use \M-. Otherwise we need to use the sequence |
| for ESC. */ |
| if (_rl_convert_meta_chars_to_ascii && map[ESC].type == ISKMAP) |
| sprintf (keyname, "\\M-"); |
| else |
| sprintf (keyname, "\\e"); |
| } |
| else if (CTRL_CHAR (key)) |
| sprintf (keyname, "\\C-%c", _rl_to_lower (UNCTRL (key))); |
| else if (key == RUBOUT) |
| sprintf (keyname, "\\C-?"); |
| else if (key == '\\' || key == '"') |
| { |
| keyname[0] = '\\'; |
| keyname[1] = (char) key; |
| keyname[2] = '\0'; |
| } |
| else |
| { |
| keyname[0] = (char) key; |
| keyname[1] = '\0'; |
| } |
| |
| strcat (keyname, seqs[i]); |
| xfree (seqs[i]); |
| |
| if (result_index + 2 > result_size) |
| { |
| result_size += 10; |
| result = (char **)xrealloc (result, result_size * sizeof (char *)); |
| } |
| |
| result[result_index++] = keyname; |
| result[result_index] = (char *)NULL; |
| } |
| |
| xfree (seqs); |
| } |
| break; |
| } |
| } |
| return (result); |
| } |
| |
| /* Return a NULL terminated array of strings which represent the key |
| sequences that can be used to invoke FUNCTION using the current keymap. */ |
| char ** |
| rl_invoking_keyseqs (function) |
| rl_command_func_t *function; |
| { |
| return (rl_invoking_keyseqs_in_map (function, _rl_keymap)); |
| } |
| |
| /* Print all of the functions and their bindings to rl_outstream. If |
| PRINT_READABLY is non-zero, then print the output in such a way |
| that it can be read back in. */ |
| void |
| rl_function_dumper (print_readably) |
| int print_readably; |
| { |
| register int i; |
| const char **names; |
| const char *name; |
| |
| names = rl_funmap_names (); |
| |
| fprintf (rl_outstream, "\n"); |
| |
| for (i = 0; name = names[i]; i++) |
| { |
| rl_command_func_t *function; |
| char **invokers; |
| |
| function = rl_named_function (name); |
| invokers = rl_invoking_keyseqs_in_map (function, _rl_keymap); |
| |
| if (print_readably) |
| { |
| if (!invokers) |
| fprintf (rl_outstream, "# %s (not bound)\n", name); |
| else |
| { |
| register int j; |
| |
| for (j = 0; invokers[j]; j++) |
| { |
| fprintf (rl_outstream, "\"%s\": %s\n", |
| invokers[j], name); |
| xfree (invokers[j]); |
| } |
| |
| xfree (invokers); |
| } |
| } |
| else |
| { |
| if (!invokers) |
| fprintf (rl_outstream, "%s is not bound to any keys\n", |
| name); |
| else |
| { |
| register int j; |
| |
| fprintf (rl_outstream, "%s can be found on ", name); |
| |
| for (j = 0; invokers[j] && j < 5; j++) |
| { |
| fprintf (rl_outstream, "\"%s\"%s", invokers[j], |
| invokers[j + 1] ? ", " : ".\n"); |
| } |
| |
| if (j == 5 && invokers[j]) |
| fprintf (rl_outstream, "...\n"); |
| |
| for (j = 0; invokers[j]; j++) |
| xfree (invokers[j]); |
| |
| xfree (invokers); |
| } |
| } |
| } |
| free (names); |
| } |
| |
| /* Print all of the current functions and their bindings to |
| rl_outstream. If an explicit argument is given, then print |
| the output in such a way that it can be read back in. */ |
| int |
| rl_dump_functions (count, key) |
| int count, key; |
| { |
| if (rl_dispatching) |
| fprintf (rl_outstream, "\r\n"); |
| rl_function_dumper (rl_explicit_arg); |
| rl_on_new_line (); |
| return (0); |
| } |
| |
| static void |
| _rl_macro_dumper_internal (print_readably, map, prefix) |
| int print_readably; |
| Keymap map; |
| char *prefix; |
| { |
| register int key; |
| char *keyname, *out; |
| int prefix_len; |
| |
| for (key = 0; key < KEYMAP_SIZE; key++) |
| { |
| switch (map[key].type) |
| { |
| case ISMACR: |
| keyname = _rl_get_keyname (key); |
| out = _rl_untranslate_macro_value ((char *)map[key].function); |
| |
| if (print_readably) |
| fprintf (rl_outstream, "\"%s%s\": \"%s\"\n", prefix ? prefix : "", |
| keyname, |
| out ? out : ""); |
| else |
| fprintf (rl_outstream, "%s%s outputs %s\n", prefix ? prefix : "", |
| keyname, |
| out ? out : ""); |
| xfree (keyname); |
| xfree (out); |
| break; |
| case ISFUNC: |
| break; |
| case ISKMAP: |
| prefix_len = prefix ? strlen (prefix) : 0; |
| if (key == ESC) |
| { |
| keyname = (char *)xmalloc (3 + prefix_len); |
| if (prefix) |
| strcpy (keyname, prefix); |
| keyname[prefix_len] = '\\'; |
| keyname[prefix_len + 1] = 'e'; |
| keyname[prefix_len + 2] = '\0'; |
| } |
| else |
| { |
| keyname = _rl_get_keyname (key); |
| if (prefix) |
| { |
| out = (char *)xmalloc (strlen (keyname) + prefix_len + 1); |
| strcpy (out, prefix); |
| strcpy (out + prefix_len, keyname); |
| xfree (keyname); |
| keyname = out; |
| } |
| } |
| |
| _rl_macro_dumper_internal (print_readably, FUNCTION_TO_KEYMAP (map, key), keyname); |
| xfree (keyname); |
| break; |
| } |
| } |
| } |
| |
| void |
| rl_macro_dumper (print_readably) |
| int print_readably; |
| { |
| _rl_macro_dumper_internal (print_readably, _rl_keymap, (char *)NULL); |
| } |
| |
| int |
| rl_dump_macros (count, key) |
| int count, key; |
| { |
| if (rl_dispatching) |
| fprintf (rl_outstream, "\r\n"); |
| rl_macro_dumper (rl_explicit_arg); |
| rl_on_new_line (); |
| return (0); |
| } |
| |
| static char * |
| _rl_get_string_variable_value (name) |
| const char *name; |
| { |
| static char numbuf[32]; |
| char *ret; |
| |
| if (_rl_stricmp (name, "bell-style") == 0) |
| { |
| switch (_rl_bell_preference) |
| { |
| case NO_BELL: |
| return "none"; |
| case VISIBLE_BELL: |
| return "visible"; |
| case AUDIBLE_BELL: |
| default: |
| return "audible"; |
| } |
| } |
| else if (_rl_stricmp (name, "comment-begin") == 0) |
| return (_rl_comment_begin ? _rl_comment_begin : RL_COMMENT_BEGIN_DEFAULT); |
| else if (_rl_stricmp (name, "completion-display-width") == 0) |
| { |
| sprintf (numbuf, "%d", _rl_completion_columns); |
| return (numbuf); |
| } |
| else if (_rl_stricmp (name, "completion-prefix-display-length") == 0) |
| { |
| sprintf (numbuf, "%d", _rl_completion_prefix_display_length); |
| return (numbuf); |
| } |
| else if (_rl_stricmp (name, "completion-query-items") == 0) |
| { |
| sprintf (numbuf, "%d", rl_completion_query_items); |
| return (numbuf); |
| } |
| else if (_rl_stricmp (name, "editing-mode") == 0) |
| return (rl_get_keymap_name_from_edit_mode ()); |
| else if (_rl_stricmp (name, "history-size") == 0) |
| { |
| sprintf (numbuf, "%d", history_is_stifled() ? history_max_entries : 0); |
| return (numbuf); |
| } |
| else if (_rl_stricmp (name, "isearch-terminators") == 0) |
| { |
| if (_rl_isearch_terminators == 0) |
| return 0; |
| ret = _rl_untranslate_macro_value (_rl_isearch_terminators); |
| if (ret) |
| { |
| strncpy (numbuf, ret, sizeof (numbuf) - 1); |
| xfree (ret); |
| numbuf[sizeof(numbuf) - 1] = '\0'; |
| } |
| else |
| numbuf[0] = '\0'; |
| return numbuf; |
| } |
| else if (_rl_stricmp (name, "keymap") == 0) |
| { |
| ret = rl_get_keymap_name (_rl_keymap); |
| if (ret == 0) |
| ret = rl_get_keymap_name_from_edit_mode (); |
| return (ret ? ret : "none"); |
| } |
| else |
| return (0); |
| } |
| |
| void |
| rl_variable_dumper (print_readably) |
| int print_readably; |
| { |
| int i; |
| char *v; |
| |
| for (i = 0; boolean_varlist[i].name; i++) |
| { |
| if (print_readably) |
| fprintf (rl_outstream, "set %s %s\n", boolean_varlist[i].name, |
| *boolean_varlist[i].value ? "on" : "off"); |
| else |
| fprintf (rl_outstream, "%s is set to `%s'\n", boolean_varlist[i].name, |
| *boolean_varlist[i].value ? "on" : "off"); |
| } |
| |
| for (i = 0; string_varlist[i].name; i++) |
| { |
| v = _rl_get_string_variable_value (string_varlist[i].name); |
| if (v == 0) /* _rl_isearch_terminators can be NULL */ |
| continue; |
| if (print_readably) |
| fprintf (rl_outstream, "set %s %s\n", string_varlist[i].name, v); |
| else |
| fprintf (rl_outstream, "%s is set to `%s'\n", string_varlist[i].name, v); |
| } |
| } |
| |
| /* Print all of the current variables and their values to |
| rl_outstream. If an explicit argument is given, then print |
| the output in such a way that it can be read back in. */ |
| int |
| rl_dump_variables (count, key) |
| int count, key; |
| { |
| if (rl_dispatching) |
| fprintf (rl_outstream, "\r\n"); |
| rl_variable_dumper (rl_explicit_arg); |
| rl_on_new_line (); |
| return (0); |
| } |
| |
| /* Return non-zero if any members of ARRAY are a substring in STRING. */ |
| static int |
| substring_member_of_array (string, array) |
| const char *string; |
| const char * const *array; |
| { |
| while (*array) |
| { |
| if (_rl_strindex (string, *array)) |
| return (1); |
| array++; |
| } |
| return (0); |
| } |