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/* 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. */ #define READLINE_LIBRARY #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 <signal.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" #if !defined (strchr) && !defined (__STDC__) extern char *strchr (), *strrchr (); #endif /* !strchr && !__STDC__ */ #ifndef O_BINARY # define O_BINARY 0 #endif extern int _rl_horizontal_scroll_mode; extern int _rl_mark_modified_lines; extern int _rl_bell_preference; extern int _rl_meta_flag; extern int _rl_convert_meta_chars_to_ascii; extern int _rl_output_meta_chars; extern int _rl_complete_show_all; extern int _rl_complete_mark_directories; extern int _rl_print_completions_horizontally; extern int _rl_completion_case_fold; extern int _rl_enable_keypad; #if defined (PAREN_MATCHING) extern int rl_blink_matching_paren; #endif /* PAREN_MATCHING */ #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_inhibit_completion; extern char *_rl_comment_begin; extern unsigned char *_rl_isearch_terminators; extern int rl_explicit_arg; extern int rl_editing_mode; extern unsigned char _rl_parsing_conditionalized_out; extern Keymap _rl_keymap; extern char *possible_control_prefixes[], *possible_meta_prefixes[]; /* Functions imported from funmap.c */ extern char **rl_funmap_names (); extern int rl_add_funmap_entry (); /* Functions imported from util.c */ extern char *_rl_strindex (); /* Functions imported from shell.c */ extern char *get_env_value (); /* Variables exported by this file. */ Keymap rl_binding_keymap; /* Forward declarations */ void rl_set_keymap_from_edit_mode (); static int _rl_read_init_file (); static int glean_key_from_name (); static int substring_member_of_array (); extern char *xmalloc (), *xrealloc (); /* **************************************************************** */ /* */ /* 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. */ int 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); return 0; } /* 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; 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; Function *function; Keymap map; { int result; Keymap oldmap; 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)); } /* Unbind all keys bound to FUNCTION in MAP. */ int rl_unbind_function_in_map (func, map) Function *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 = (Function *)NULL; rval = 1; } } return rval; } int rl_unbind_command_in_map (command, map) char *command; Keymap map; { Function *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. This makes new keymaps as necessary. The initial place to do bindings is in MAP. */ int rl_set_key (keyseq, function, map) char *keyseq; Function *function; Keymap map; { return (rl_generic_bind (ISFUNC, keyseq, (char *)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. */ int 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 -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; 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 -1; } keys = 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)) { free (keys); return -1; } /* 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 = FUNCTION_TO_KEYMAP (map, ESC); } 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 = KEYMAP_TO_FUNCTION (rl_make_bare_keymap()); } map = FUNCTION_TO_KEYMAP (map, ic); } else { if (map[ic].type == ISMACR) free ((char *)map[ic].function); map[ic].function = KEYMAP_TO_FUNCTION (data); map[ic].type = type; } rl_binding_keymap = map; } free (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) char *seq, *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; i += 5; array[l++] = CTRL (_rl_to_upper (seq[i])); if (seq[i] == '\0') i--; } else if (c == 'M') { i++; array[l++] = ESC; /* XXX */ } 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 + 1); break; case 'x': i++; for (temp = 3, c = 0; isxdigit (seq[i]) && temp--; i++) c = (c * 16) + HEXVALUE (seq[i]); if (temp == 3) c = 'x'; i--; /* auto-increment in for loop */ array[l++] = c % (largest_char + 1); 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 (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 = 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 (CTRL_CHAR (c) && c != ESC) { *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. */ Function * rl_named_function (string) 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 ((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 = FUNCTION_TO_KEYMAP (map, ESC); 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 = FUNCTION_TO_KEYMAP (map, ic); } else { if (type) *type = map[ic].type; return (map[ic].function); } } return ((Function *) 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 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 | O_BINARY, 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 1 if (i < file_size) #else if (i < 0) #endif { free (buffer); return ((char *)NULL); } buffer[file_size] = '\0'; #if O_BINARY { /* Systems which distinguish between text and binary files need to strip the CR characters before each Newline, otherwise the parsing functions won't work. */ char *s, *d; size_t removed = 0; for (s = buffer, d = buffer; s < buffer + file_size; s++) { if (removed) *d = *s; if (*s != '\r' || s[1] != '\n') d++; else removed++; } file_size -= removed; buffer[file_size] = '\0'; } #endif if (sizep) *sizep = file_size; 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 ((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. (for __MSDOS__ only) ~/_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; { /* Default the filename. */ if (filename == 0) { filename = last_readline_init_file; if (filename == 0) filename = get_env_value ("INPUTRC"); if (filename == 0) filename = DEFAULT_INPUTRC; } if (*filename == 0) filename = DEFAULT_INPUTRC; #ifdef __MSDOS__ { /* DOS doesn't allow leading dots in file names. If the original name fails (it could work if we are on Windows), fall back to ~/_inputrc. */ int retval = _rl_read_init_file (filename, 0); if (retval == 0) return retval; else if (strcmp (filename, "~/.inputrc") == 0) filename = "~/_inputrc"; } #endif return (_rl_read_init_file (filename, 0)); } static int _rl_read_init_file (filename, include_level) 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); free (openname); 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); } /* 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++); /* 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++; } free (buffer); return (0); } static void _rl_init_file_error (msg) char *msg; { fprintf (stderr, "readline: %s: line %d: %s\n", current_readline_init_file, current_readline_init_lineno, msg); } /* **************************************************************** */ /* */ /* 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; 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 `$if term=sun-cmd' into their .inputrc. */ _rl_parsing_conditionalized_out = _rl_stricmp (args + 5, tname) && _rl_stricmp (args + 5, rl_terminal_name); free (tname); } #if defined (VI_MODE) else if (_rl_strnicmp (args, "mode=", 5) == 0) { int mode; if (_rl_stricmp (args + 5, "emacs") == 0) mode = emacs_mode; else if (_rl_stricmp (args + 5, "vi") == 0) mode = vi_mode; else mode = no_mode; _rl_parsing_conditionalized_out = mode != rl_editing_mode; } #endif /* VI_MODE */ /* Check to see if the first word in ARGS is the same as the value stored in rl_readline_name. */ else if (_rl_stricmp (args, rl_readline_name) == 0) _rl_parsing_conditionalized_out = 0; else _rl_parsing_conditionalized_out = 1; return 0; } /* Invert the current parser state if there is anything on the stack. */ static int parser_else (args) char *args; { register int i; if (if_stack_depth == 0) { _rl_init_file_error ("$else found without matching $if"); return 0; } /* Check the previous (n - 1) levels of the stack to make sure that we haven't previously turned off parsing. */ for (i = 0; i < if_stack_depth - 1; i++) if (if_stack[i] == 1) return 0; /* Invert the state of parsing if at top level. */ _rl_parsing_conditionalized_out = !_rl_parsing_conditionalized_out; return 0; } /* Terminate a conditional, popping the value of _rl_parsing_conditionalized_out from the stack. */ static int parser_endif (args) char *args; { if (if_stack_depth) _rl_parsing_conditionalized_out = if_stack[--if_stack_depth]; else _rl_init_file_error ("$endif without matching $if"); return 0; } static int parser_include (args) char *args; { char *old_init_file, *e; int old_line_number, old_include_level, r; if (_rl_parsing_conditionalized_out) return (0); old_init_file = current_readline_init_file; old_line_number = current_readline_init_lineno; old_include_level = current_readline_init_include_level; e = strchr (args, '\n'); if (e) *e = '\0'; r = _rl_read_init_file (args, old_include_level + 1); current_readline_init_file = old_init_file; current_readline_init_lineno = old_line_number; current_readline_init_include_level = old_include_level; return r; } /* Associate textual names with actual functions. */ static struct { char *name; Function *function; } parser_directives [] = { { "if", parser_if }, { "endif", parser_endif }, { "else", parser_else }, { "include", parser_include }, { (char *)0x0, (Function *)0x0 } }; /* Handle a parser directive. STATEMENT is the line of the directive without any leading `$'. */ 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 (_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 = 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 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 = string[i++], passc; 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_set_key (). Otherwise, let the older code deal with it. */ if (*string == '"') { char *seq; register int j, k, passc; seq = 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_set_key (seq, rl_named_function (funname), _rl_keymap); free (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, possible_control_prefixes)) key = CTRL (_rl_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 == '"') { unsigned 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. */ static struct { char *name; int *value; } boolean_varlist [] = { #if defined (PAREN_MATCHING) { "blink-matching-paren", &rl_blink_matching_paren }, #endif { "completion-ignore-case", &_rl_completion_case_fold }, { "convert-meta", &_rl_convert_meta_chars_to_ascii }, { "disable-completion", &rl_inhibit_completion }, { "enable-keypad", &_rl_enable_keypad }, { "expand-tilde", &rl_complete_with_tilde_expansion }, { "horizontal-scroll-mode", &_rl_horizontal_scroll_mode }, { "input-meta", &_rl_meta_flag }, { "mark-directories", &_rl_complete_mark_directories }, { "mark-modified-lines", &_rl_mark_modified_lines }, { "meta-flag", &_rl_meta_flag }, { "output-meta", &_rl_output_meta_chars }, { "print-completions-horizontally", &_rl_print_completions_horizontally }, { "show-all-if-ambiguous", &_rl_complete_show_all }, #if defined (VISIBLE_STATS) { "visible-stats", &rl_visible_stats }, #endif /* VISIBLE_STATS */ { (char *)NULL, (int *)NULL } }; int 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 (_rl_stricmp (name, boolean_varlist[i].name) == 0) { /* A variable is TRUE if the "value" is "on", "1" or "". */ *boolean_varlist[i].value = *value == 0 || _rl_stricmp (value, "on") == 0 || (value[0] == '1' && value[1] == '\0'); return 0; } } /* Not a boolean variable, so check for specials. */ /* Editing mode change? */ if (_rl_stricmp (name, "editing-mode") == 0) { if (_rl_strnicmp (value, "vi", 2) == 0) { #if defined (VI_MODE) _rl_keymap = vi_insertion_keymap; rl_editing_mode = vi_mode; #endif /* VI_MODE */ } else if (_rl_strnicmp (value, "emacs", 5) == 0) { _rl_keymap = emacs_standard_keymap; rl_editing_mode = emacs_mode; } } /* Comment string change? */ else if (_rl_stricmp (name, "comment-begin") == 0) { if (*value) { if (_rl_comment_begin) free (_rl_comment_begin); _rl_comment_begin = savestring (value); } } else if (_rl_stricmp (name, "completion-query-items") == 0) { int nval = 100; if (*value) { nval = atoi (value); if (nval < 0) nval = 0; } rl_completion_query_items = nval; } else if (_rl_stricmp (name, "keymap") == 0) { Keymap kmap; kmap = rl_get_keymap_by_name (value); if (kmap) rl_set_keymap (kmap); } else if (_rl_stricmp (name, "bell-style") == 0) { if (!*value) _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 if (_rl_stricmp (name, "prefer-visible-bell") == 0) { /* Backwards compatibility. */ if (*value && (_rl_stricmp (value, "on") == 0 || (*value == '1' && !value[1]))) _rl_bell_preference = VISIBLE_BELL; else _rl_bell_preference = AUDIBLE_BELL; } else if (_rl_stricmp (name, "isearch-terminators") == 0) { /* Isolate the value and translate it into a character string. */ int beg, end; char *v; v = savestring (value); FREE (_rl_isearch_terminators); if (v[0] == '"' || v[0] == '\'') { int 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 = (unsigned char *)xmalloc (2 * strlen (v) + 1); rl_translate_keyseq (v + beg, _rl_isearch_terminators, &end); _rl_isearch_terminators[end] = '\0'; free (v); } /* For the time being, unknown variable names are simply ignored. */ return 0; } /* 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 (_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 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); } 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 (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; 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); } 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 0 /* 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) { keyseq[0] = '\\'; keyseq[1] = 'e'; keyseq[2] = '\0'; return keyseq; } #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) 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 < 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) 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]); free (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; } free (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) Function *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; 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 = 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); 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); } } } } /* 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); #if 0 out = (char *)map[key].function; #else out = _rl_untranslate_macro_value ((char *)map[key].function); #endif 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 : ""); free (keyname); #if 1 free (out); #endif break; case ISFUNC: break; case ISKMAP: prefix_len = prefix ? strlen (prefix) : 0; if (key == ESC) { keyname = 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 = xmalloc (strlen (keyname) + prefix_len + 1); strcpy (out, prefix); strcpy (out + prefix_len, keyname); free (keyname); keyname = out; } } _rl_macro_dumper_internal (print_readably, FUNCTION_TO_KEYMAP (map, key), keyname); free (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); } void rl_variable_dumper (print_readably) int print_readably; { int i; char *kname; 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"); } /* bell-style */ switch (_rl_bell_preference) { case NO_BELL: kname = "none"; break; case VISIBLE_BELL: kname = "visible"; break; case AUDIBLE_BELL: default: kname = "audible"; break; } if (print_readably) fprintf (rl_outstream, "set bell-style %s\n", kname); else fprintf (rl_outstream, "bell-style is set to `%s'\n", kname); /* comment-begin */ if (print_readably) fprintf (rl_outstream, "set comment-begin %s\n", _rl_comment_begin ? _rl_comment_begin : RL_COMMENT_BEGIN_DEFAULT); else fprintf (rl_outstream, "comment-begin is set to `%s'\n", _rl_comment_begin ? _rl_comment_begin : ""); /* completion-query-items */ if (print_readably) fprintf (rl_outstream, "set completion-query-items %d\n", rl_completion_query_items); else fprintf (rl_outstream, "completion-query-items is set to `%d'\n", rl_completion_query_items); /* editing-mode */ if (print_readably) fprintf (rl_outstream, "set editing-mode %s\n", (rl_editing_mode == emacs_mode) ? "emacs" : "vi"); else fprintf (rl_outstream, "editing-mode is set to `%s'\n", (rl_editing_mode == emacs_mode) ? "emacs" : "vi"); /* keymap */ kname = rl_get_keymap_name (_rl_keymap); if (kname == 0) kname = rl_get_keymap_name_from_edit_mode (); if (print_readably) fprintf (rl_outstream, "set keymap %s\n", kname ? kname : "none"); else fprintf (rl_outstream, "keymap is set to `%s'\n", kname ? kname : "none"); /* isearch-terminators */ if (_rl_isearch_terminators) { char *disp; disp = _rl_untranslate_macro_value (_rl_isearch_terminators); if (print_readably) fprintf (rl_outstream, "set isearch-terminators \"%s\"\n", disp); else fprintf (rl_outstream, "isearch-terminators is set to \"%s\"\n", disp); free (disp); } } /* 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); } /* Bind key sequence KEYSEQ to DEFAULT_FUNC if KEYSEQ is unbound. */ void _rl_bind_if_unbound (keyseq, default_func) char *keyseq; Function *default_func; { Function *func; if (keyseq) { func = rl_function_of_keyseq (keyseq, _rl_keymap, (int *)NULL); if (!func || func == rl_do_lowercase_version) rl_set_key (keyseq, default_func, _rl_keymap); } } /* 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 (_rl_strindex (string, *array)) return (1); array++; } return (0); }
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