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Diffstat (limited to 'readline/bind.c')
| -rw-r--r-- | readline/bind.c | 1396 |
1 files changed, 1396 insertions, 0 deletions
diff --git a/readline/bind.c b/readline/bind.c new file mode 100644 index 0000000..a7ffe25 --- /dev/null +++ b/readline/bind.c @@ -0,0 +1,1396 @@ +/* bind.c -- key binding and startup file support for the readline library. */ + +/* Copyright (C) 1987, 1989, 1992 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. + + The GNU Readline Library 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 1, or + (at your option) any later version. + + The GNU Readline Library 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. + + The GNU General Public License is often shipped with GNU software, and + is generally kept in a file called COPYING or LICENSE. If you do not + have a copy of the license, write to the Free Software Foundation, + 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#include "sysdep.h" +#include <stdio.h> +#include <sys/types.h> +#include <fcntl.h> +#ifndef NO_SYS_FILE +#include <sys/file.h> +#endif + +#include <errno.h> +/* Not all systems declare ERRNO in errno.h... and some systems #define it! */ +#if !defined (errno) +extern int errno; +#endif /* !errno */ + +/* System-specific feature definitions and include files. */ +#include "rldefs.h" + +/* Some standard library routines. */ +#include "readline.h" +#include "history.h" + +#if !defined (strchr) && !defined (__STDC__) +extern char *strchr (), *strrchr (); +#endif /* !strchr && !__STDC__ */ + +extern char *tilde_expand (); + +extern int _rl_horizontal_scroll_mode; +extern int _rl_mark_modified_lines; +extern int _rl_prefer_visible_bell; +extern int _rl_meta_flag; +extern int rl_blink_matching_paren; +extern int _rl_convert_meta_chars_to_ascii; +#if defined (VISIBLE_STATS) +extern int rl_visible_stats; +#endif /* VISIBLE_STATS */ +extern int rl_complete_with_tilde_expansion; +extern int rl_completion_query_items; + +extern int rl_explicit_arg; +extern int rl_editing_mode; +extern unsigned short _rl_parsing_conditionalized_out; +extern Keymap _rl_keymap; + +extern char *possible_control_prefixes[], *possible_meta_prefixes[]; + +extern char **rl_funmap_names (); + +static void rl_generic_bind (); +static int glean_key_from_name (); +static int stricmp (), strnicmp (); + +#if defined (STATIC_MALLOC) +static char *xmalloc (), *xrealloc (); +#else +extern char *xmalloc (), *xrealloc (); +#endif /* STATIC_MALLOC */ + +/* **************************************************************** */ +/* */ +/* Binding keys */ +/* */ +/* **************************************************************** */ + +/* rl_add_defun (char *name, Function *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. */ +rl_add_defun (name, function, key) + char *name; + Function *function; + int key; +{ + if (key != -1) + rl_bind_key (key, function); + rl_add_funmap_entry (name, function); +} + +/* Bind KEY to FUNCTION. Returns non-zero if KEY is out of range. */ +int +rl_bind_key (key, function) + int key; + Function *function; +{ + if (key < 0) + return (key); + + if (META_CHAR (key) && _rl_convert_meta_chars_to_ascii) + { + if (_rl_keymap[ESC].type == ISKMAP) + { + Keymap escmap = (Keymap)_rl_keymap[ESC].function; + + 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; + 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; + Function *function; + Keymap map; +{ + int result; + Keymap oldmap = _rl_keymap; + + _rl_keymap = map; + result = rl_bind_key (key, function); + _rl_keymap = oldmap; + return (result); +} + +/* 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, (Function *)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, (Function *)NULL, map)); +} + +/* 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. */ +rl_set_key (keyseq, function, map) + char *keyseq; + Function *function; + Keymap map; +{ + rl_generic_bind (ISFUNC, keyseq, function, map); +} + +/* 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. */ +rl_macro_bind (keyseq, macro, map) + 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)) + { + free (macro_keys); + return; + } + rl_generic_bind (ISMACR, keyseq, macro_keys, map); +} + +/* 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. */ + +static void +rl_generic_bind (type, keyseq, data, map) + int type; + char *keyseq, *data; + Keymap map; +{ + char *keys; + int keys_len; + register int i; + + /* If no keys to bind to, exit right away. */ + if (!keyseq || !*keyseq) + { + if (type == ISMACR) + free (data); + return; + } + + keys = (char *)alloca (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)) + return; + + /* Bind keys, making new keymaps as necessary. */ + for (i = 0; i < keys_len; i++) + { + int ic = (int) ((unsigned char)keys[i]); + + if (_rl_convert_meta_chars_to_ascii && META_CHAR (ic)) + { + ic = UNMETA (ic); + if (map[ESC].type == ISKMAP) + map = (Keymap) map[ESC].function; + } + + if ((i + 1) < keys_len) + { + if (map[ic].type != ISKMAP) + { + if (map[ic].type == ISMACR) + free ((char *)map[ic].function); + + map[ic].type = ISKMAP; + map[ic].function = (Function *)rl_make_bare_keymap (); + } + map = (Keymap)map[ic].function; + } + else + { + if (map[ic].type == ISMACR) + free ((char *)map[ic].function); + + map[ic].function = (Function *)data; + map[ic].type = type; + } + } +} + +/* 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. */ +rl_translate_keyseq (seq, array, len) + char *seq, *array; + int *len; +{ + register int i, c, l = 0; + + for (i = 0; c = seq[i]; i++) + { + if (c == '\\') + { + c = seq[++i]; + + if (!c) + break; + + if (((c == 'C' || c == 'M') && seq[i + 1] == '-') || + (c == 'e')) + { + /* Handle special case of backwards define. */ + if (strncmp (&seq[i], "C-\\M-", 5) == 0) + { + array[l++] = ESC; + i += 5; + array[l++] = CTRL (to_upper (seq[i])); + if (!seq[i]) + i--; + continue; + } + + switch (c) + { + case 'M': + i++; + array[l++] = ESC; + break; + + case 'C': + i += 2; + /* Special hack for C-?... */ + if (seq[i] == '?') + array[l++] = RUBOUT; + else + array[l++] = CTRL (to_upper (seq[i])); + break; + + case 'e': + array[l++] = ESC; + } + + continue; + } + } + array[l++] = c; + } + + *len = l; + array[l] = '\0'; + return (0); +} + +/* Return a pointer to the function that STRING represents. + If STRING doesn't have a matching function, then a NULL pointer + is returned. */ +Function * +rl_named_function (string) + char *string; +{ + register int i; + + rl_initialize_funmap (); + + for (i = 0; funmap[i]; i++) + if (stricmp (funmap[i]->name, string) == 0) + return (funmap[i]->function); + return ((Function *)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). */ +Function * +rl_function_of_keyseq (keyseq, map, type) + char *keyseq; + Keymap map; + int *type; +{ + register int i; + + if (!map) + map = _rl_keymap; + + for (i = 0; keyseq && keyseq[i]; i++) + { + int ic = keyseq[i]; + + if (META_CHAR (ic) && _rl_convert_meta_chars_to_ascii) + { + if (map[ESC].type != ISKMAP) + { + if (type) + *type = map[ESC].type; + + return (map[ESC].function); + } + else + { + map = (Keymap)map[ESC].function; + ic = UNMETA (ic); + } + } + + if (map[ic].type == ISKMAP) + { + /* If this is the last key in the key sequence, return the + map. */ + if (!keyseq[i + 1]) + { + if (type) + *type = ISKMAP; + + return (map[ic].function); + } + else + map = (Keymap)map[ic].function; + } + else + { + if (type) + *type = map[ic].type; + + return (map[ic].function); + } + } +} + +/* The last key bindings file read. */ +static char *last_readline_init_file = (char *)NULL; + +/* Re-read the current keybindings file. */ +rl_re_read_init_file (count, ignore) + int count, ignore; +{ + rl_read_init_file ((char *)NULL); +} + +/* The final, last-ditch effort file name for an init file. */ +#ifdef __MSDOS__ +/* Don't know what to do, but this is a guess */ +#define DEFAULT_INPUTRC "/INPUTRC"; +#else +#define DEFAULT_INPUTRC "~/.inputrc" +#endif + +/* Do key bindings from a file. If FILENAME is NULL it defaults + to `~/.inputrc'. If the file existed and could be opened and + read, 0 is returned, otherwise errno is returned. */ +int +rl_read_init_file (filename) + char *filename; +{ + register int i; + char *buffer, *openname, *line, *end; + struct stat finfo; + int file; + + /* Default the filename. */ + if (!filename) + { + if (last_readline_init_file) + filename = last_readline_init_file; + else + filename = DEFAULT_INPUTRC; + } + + openname = tilde_expand (filename); + + if (!openname || *openname == '\000') + return ENOENT; + + if ((stat (openname, &finfo) < 0) || + (file = open (openname, O_RDONLY, 0666)) < 0) + { + free (openname); + return (errno); + } + else + free (openname); + + if (last_readline_init_file) + free (last_readline_init_file); + + last_readline_init_file = savestring (filename); + + /* Read the file into BUFFER. */ + buffer = (char *)xmalloc ((int)finfo.st_size + 1); + i = read (file, buffer, finfo.st_size); + close (file); + + if (i != finfo.st_size) + return (errno); + + /* Loop over the lines in the file. Lines that start with `#' are + comments; all other lines are commands for readline initialization. */ + line = buffer; + end = buffer + finfo.st_size; + while (line < end) + { + /* Find the end of this line. */ + for (i = 0; line + i != end && line[i] != '\n'; i++); + + /* Mark end of line. */ + line[i] = '\0'; + + /* 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; + } + free (buffer); + return (0); +} + +/* **************************************************************** */ +/* */ +/* Parser Directives */ +/* */ +/* **************************************************************** */ + +/* Conditionals. */ + +/* Calling programs set this to have their argv[0]. */ +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 = 0; +static int if_stack_size = 0; + +/* 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 && strnicmp (args, "term=", 5) == 0) + { + char *tem, *tname; + + /* Terminals like "aaa-60" are equivalent to "aaa". */ + tname = savestring (rl_terminal_name); + tem = (char*) strrchr (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. */ + if ((stricmp (args + 5, tname) == 0) || + (stricmp (args + 5, rl_terminal_name) == 0)) + _rl_parsing_conditionalized_out = 0; + else + _rl_parsing_conditionalized_out = 1; + + free (tname); + } +#if defined (VI_MODE) + else if (strnicmp (args, "mode=", 5) == 0) + { + int mode; + + if (stricmp (args + 5, "emacs") == 0) + mode = emacs_mode; + else if (stricmp (args + 5, "vi") == 0) + mode = vi_mode; + else + mode = no_mode; + + if (mode == rl_editing_mode) + _rl_parsing_conditionalized_out = 0; + else + _rl_parsing_conditionalized_out = 1; + } +#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 (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) + { + /* Error message? */ + return 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++) + 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 + { + /* *** What, no error message? *** */ + } + return 0; +} + +/* Associate textual names with actual functions. */ +static struct { + char *name; + Function *function; +} parser_directives [] = { + { "if", parser_if }, + { "endif", parser_endif }, + { "else", parser_else }, + { (char *)0x0, (Function *)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 (stricmp (directive, parser_directives[i].name) == 0) + { + (*parser_directives[i].function) (args); + return (0); + } + + /* *** Should an error message be output? */ + return (1); +} + +/* Ugly but working hack for binding prefix meta. */ +#define PREFIX_META_HACK + +static int substring_member_of_array (); + +/* 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. */ +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; + + /* If this is a parser directive, act on it. */ + if (*string == '$') + { + handle_parser_directive (&string[1]); + return; + } + + /* If we aren't supposed to be parsing right now, then we're done. */ + if (_rl_parsing_conditionalized_out) + return; + + 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; + } + } + + /* 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 (stricmp (string, "set") == 0) + { + char *var = string + i; + char *value; + + /* 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++; + + rl_variable_bind (var, value); + return; + } + + /* 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 = string[i++]; + int passc = 0; + + for (; 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; + } + + /* If this is a new-style key-binding, then do the binding with + rl_set_key (). Otherwise, let the older code deal with it. */ + if (*string == '"') + { + char *seq = (char *)alloca (1 + strlen (string)); + register int j, k = 0; + int passc = 0; + + for (j = 1; 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_set_key (seq, rl_named_function (funname), _rl_keymap); + + return; + } + + /* Get the actual character we want to deal with. */ + kname = (char*) 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, possible_control_prefixes)) + key = CTRL (to_upper (key)); + + if (substring_member_of_array (string, possible_meta_prefixes)) + key = META (key); + + /* Temporary. Handle old-style keyname with macro-binding. */ + if (*funname == '\'' || *funname == '"') + { + char seq[2]; + int fl = strlen (funname); + + seq[0] = key; seq[1] = '\0'; + if (fl && funname[fl - 1] == *funname) + funname[fl - 1] = '\0'; + + rl_macro_bind (seq, &funname[1], _rl_keymap); + } +#if defined (PREFIX_META_HACK) + /* Ugly, but working hack to keep prefix-meta around. */ + else if (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)); +} + +/* 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. */ + +static struct { + char *name; + int *value; +} boolean_varlist [] = { + { "horizontal-scroll-mode", &_rl_horizontal_scroll_mode }, + { "mark-modified-lines", &_rl_mark_modified_lines }, + { "prefer-visible-bell", &_rl_prefer_visible_bell }, + { "meta-flag", &_rl_meta_flag }, + { "blink-matching-paren", &rl_blink_matching_paren }, + { "convert-meta", &_rl_convert_meta_chars_to_ascii }, +#if defined (VISIBLE_STATS) + { "visible-stats", &rl_visible_stats }, +#endif /* VISIBLE_STATS */ + { "expand-tilde", &rl_complete_with_tilde_expansion }, + { (char *)NULL, (int *)NULL } +}; + +rl_variable_bind (name, value) + char *name, *value; +{ + register int i; + + /* Check for simple variables first. */ + for (i = 0; boolean_varlist[i].name; i++) + { + if (stricmp (name, boolean_varlist[i].name) == 0) + { + /* A variable is TRUE if the "value" is "on", "1" or "". */ + if ((!*value) || + (stricmp (value, "On") == 0) || + (value[0] == '1' && value[1] == '\0')) + *boolean_varlist[i].value = 1; + else + *boolean_varlist[i].value = 0; + return; + } + } + + /* Not a boolean variable, so check for specials. */ + + /* Editing mode change? */ + if (stricmp (name, "editing-mode") == 0) + { + if (strnicmp (value, "vi", 2) == 0) + { +#if defined (VI_MODE) + _rl_keymap = vi_insertion_keymap; + rl_editing_mode = vi_mode; +#else +#if defined (NOTDEF) + /* What state is the terminal in? I'll tell you: + non-determinate! That means we cannot do any output. */ + ding (); +#endif /* NOTDEF */ +#endif /* VI_MODE */ + } + else if (strnicmp (value, "emacs", 5) == 0) + { + _rl_keymap = emacs_standard_keymap; + rl_editing_mode = emacs_mode; + } + } + + /* Comment string change? */ + else if (stricmp (name, "comment-begin") == 0) + { +#if defined (VI_MODE) + extern char *rl_vi_comment_begin; + + if (*value) + { + if (rl_vi_comment_begin) + free (rl_vi_comment_begin); + + rl_vi_comment_begin = savestring (value); + } +#endif /* VI_MODE */ + } + else if (stricmp (name, "completion-query-items") == 0) + { + int nval = 100; + if (*value) + { + nval = atoi (value); + if (nval < 0) + nval = 0; + } + rl_completion_query_items = nval; + } +} + +/* Return the character which matches NAME. + For example, `Space' returns ' '. */ + +typedef struct { + char *name; + int value; +} assoc_list; + +static 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 (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 struct { + char *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) + char *name; +{ + register int i; + + for (i = 0; keymap_names[i].name; i++) + if (strcmp (name, keymap_names[i].name) == 0) + return (keymap_names[i].map); + return ((Keymap) 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; + else if (rl_editing_mode == vi_mode) + _rl_keymap = vi_insertion_keymap; +} + +/* **************************************************************** */ +/* */ +/* 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 (ignore) + int ignore; +{ + register int i; + 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]); + + free (funmap_names); +} + +/* Return a NULL terminated array of strings which represent the key + sequences that are used to invoke FUNCTION in MAP. */ +static char ** +invoking_keyseqs_in_map (function, map) + Function *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 < 128; 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 = (char *)xmalloc (5); + + if (CTRL_P (key)) + sprintf (keyname, "\\C-%c", 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'; + } + + if (result_index + 2 > result_size) + result = (char **) xrealloc + (result, (result_size += 10) * sizeof (char *)); + + result[result_index++] = keyname; + result[result_index] = (char *)NULL; + } + break; + + case ISKMAP: + { + char **seqs = (char **)NULL; + + /* 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 = + invoking_keyseqs_in_map (function, (Keymap)map[key].function); + + if (seqs) + { + register int i; + + for (i = 0; seqs[i]; i++) + { + char *keyname = (char *)xmalloc (6 + strlen (seqs[i])); + + if (key == ESC) + sprintf (keyname, "\\e"); + else if (CTRL_P (key)) + sprintf (keyname, "\\C-%c", 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]); + + if (result_index + 2 > result_size) + result = (char **) xrealloc + (result, (result_size += 10) * sizeof (char *)); + + result[result_index++] = keyname; + result[result_index] = (char *)NULL; + } + } + } + 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) + Function *function; +{ + return (invoking_keyseqs_in_map (function, _rl_keymap)); +} + +/* 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) + int count; +{ + void rl_function_dumper (); + + rl_function_dumper (rl_explicit_arg); + rl_on_new_line (); + return (0); +} + +/* 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; + char **names; + char *name; + + names = rl_funmap_names (); + + fprintf (rl_outstream, "\n"); + + for (i = 0; name = names[i]; i++) + { + Function *function; + char **invokers; + + function = rl_named_function (name); + invokers = 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); + free (invokers[j]); + } + + free (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++) + free (invokers[j]); + + free (invokers); + } + } + } +} + + +/* **************************************************************** */ +/* */ +/* String Utility Functions */ +/* */ +/* **************************************************************** */ + +static char *strindex (); + +/* Return non-zero if any members of ARRAY are a substring in STRING. */ +static int +substring_member_of_array (string, array) + char *string, **array; +{ + while (*array) + { + if (strindex (string, *array)) + return (1); + array++; + } + return (0); +} + +/* Whoops, Unix doesn't have strnicmp. */ + +/* Compare at most COUNT characters from string1 to string2. Case + doesn't matter. */ +static int +strnicmp (string1, string2, count) + char *string1, *string2; +{ + register char ch1, ch2; + + while (count) + { + ch1 = *string1++; + ch2 = *string2++; + if (to_upper(ch1) == to_upper(ch2)) + count--; + else break; + } + return (count); +} + +/* strcmp (), but caseless. */ +static int +stricmp (string1, string2) + char *string1, *string2; +{ + register char ch1, ch2; + + while (*string1 && *string2) + { + ch1 = *string1++; + ch2 = *string2++; + if (to_upper(ch1) != to_upper(ch2)) + return (1); + } + return (*string1 | *string2); +} + +/* Determine if s2 occurs in s1. If so, return a pointer to the + match in s1. The compare is case insensitive. */ +static char * +strindex (s1, s2) + register char *s1, *s2; +{ + register int i, l = strlen (s2); + register int len = strlen (s1); + + for (i = 0; (len - i) >= l; i++) + if (strnicmp (&s1[i], s2, l) == 0) + return (s1 + i); + return ((char *)NULL); +} |