diff options
Diffstat (limited to 'bin/1sh/libedit/readline.c')
| -rw-r--r-- | bin/1sh/libedit/readline.c | 2371 |
1 files changed, 0 insertions, 2371 deletions
diff --git a/bin/1sh/libedit/readline.c b/bin/1sh/libedit/readline.c deleted file mode 100644 index bd5602de..00000000 --- a/bin/1sh/libedit/readline.c +++ /dev/null @@ -1,2371 +0,0 @@ -/* $NetBSD: readline.c,v 1.141 2017/04/21 05:38:03 abhinav Exp $ */ - -/*- - * Copyright (c) 1997 The NetBSD Foundation, Inc. - * All rights reserved. - * - * This code is derived from software contributed to The NetBSD Foundation - * by Jaromir Dolecek. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS - * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED - * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS - * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include "config.h" -#if !defined(lint) && !defined(SCCSID) -__RCSID("$NetBSD: readline.c,v 1.141 2017/04/21 05:38:03 abhinav Exp $"); -#endif /* not lint && not SCCSID */ - -#include <sys/types.h> -#include <sys/stat.h> -#include <ctype.h> -#include <dirent.h> -#include <errno.h> -#include <fcntl.h> -#include <limits.h> -#include <pwd.h> -#include <setjmp.h> -#include <stdint.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> -#include <vis.h> - -#include "readline/readline.h" -#include "el.h" -#include "fcns.h" -#include "filecomplete.h" - -void rl_prep_terminal(int); -void rl_deprep_terminal(void); - -/* for rl_complete() */ -#define TAB '\r' - -/* see comment at the #ifdef for sense of this */ -/* #define GDB_411_HACK */ - -/* readline compatibility stuff - look at readline sources/documentation */ -/* to see what these variables mean */ -const char *rl_library_version = "EditLine wrapper"; -int rl_readline_version = RL_READLINE_VERSION; -static char empty[] = { '\0' }; -static char expand_chars[] = { ' ', '\t', '\n', '=', '(', '\0' }; -static char break_chars[] = { ' ', '\t', '\n', '"', '\\', '\'', '`', '@', '$', - '>', '<', '=', ';', '|', '&', '{', '(', '\0' }; -char *rl_readline_name = empty; -FILE *rl_instream = NULL; -FILE *rl_outstream = NULL; -int rl_point = 0; -int rl_end = 0; -char *rl_line_buffer = NULL; -rl_vcpfunc_t *rl_linefunc = NULL; -int rl_done = 0; -VFunction *rl_event_hook = NULL; -KEYMAP_ENTRY_ARRAY emacs_standard_keymap, - emacs_meta_keymap, - emacs_ctlx_keymap; -/* - * The following is not implemented; we always catch signals in the - * libedit fashion: set handlers on entry to el_gets() and clear them - * on the way out. This simplistic approach works for most cases; if - * it does not work for your application, please let us know. - */ -int rl_catch_signals = 1; -int rl_catch_sigwinch = 1; - -int history_base = 1; /* probably never subject to change */ -int history_length = 0; -int history_offset = 0; -int max_input_history = 0; -char history_expansion_char = '!'; -char history_subst_char = '^'; -char *history_no_expand_chars = expand_chars; -Function *history_inhibit_expansion_function = NULL; -char *history_arg_extract(int start, int end, const char *str); - -int rl_inhibit_completion = 0; -int rl_attempted_completion_over = 0; -char *rl_basic_word_break_characters = break_chars; -char *rl_completer_word_break_characters = NULL; -char *rl_completer_quote_characters = NULL; -rl_compentry_func_t *rl_completion_entry_function = NULL; -char *(*rl_completion_word_break_hook)(void) = NULL; -rl_completion_func_t *rl_attempted_completion_function = NULL; -Function *rl_pre_input_hook = NULL; -Function *rl_startup1_hook = NULL; -int (*rl_getc_function)(FILE *) = NULL; -char *rl_terminal_name = NULL; -int rl_already_prompted = 0; -int rl_filename_completion_desired = 0; -int rl_ignore_completion_duplicates = 0; -int readline_echoing_p = 1; -int _rl_print_completions_horizontally = 0; -VFunction *rl_redisplay_function = NULL; -Function *rl_startup_hook = NULL; -VFunction *rl_completion_display_matches_hook = NULL; -VFunction *rl_prep_term_function = (VFunction *)rl_prep_terminal; -VFunction *rl_deprep_term_function = (VFunction *)rl_deprep_terminal; -KEYMAP_ENTRY_ARRAY emacs_meta_keymap; - -/* - * The current prompt string. - */ -char *rl_prompt = NULL; -/* - * This is set to character indicating type of completion being done by - * rl_complete_internal(); this is available for application completion - * functions. - */ -int rl_completion_type = 0; - -/* - * If more than this number of items results from query for possible - * completions, we ask user if they are sure to really display the list. - */ -int rl_completion_query_items = 100; - -/* - * List of characters which are word break characters, but should be left - * in the parsed text when it is passed to the completion function. - * Shell uses this to help determine what kind of completing to do. - */ -char *rl_special_prefixes = NULL; - -/* - * This is the character appended to the completed words if at the end of - * the line. Default is ' ' (a space). - */ -int rl_completion_append_character = ' '; - -/* stuff below is used internally by libedit for readline emulation */ - -static History *h = NULL; -static EditLine *e = NULL; -static rl_command_func_t *map[256]; -static jmp_buf topbuf; - -/* internal functions */ -static unsigned char _el_rl_complete(EditLine *, int); -static unsigned char _el_rl_tstp(EditLine *, int); -static char *_get_prompt(EditLine *); -static int _getc_function(EditLine *, wchar_t *); -static int _history_expand_command(const char *, size_t, size_t, - char **); -static char *_rl_compat_sub(const char *, const char *, - const char *, int); -static int _rl_event_read_char(EditLine *, wchar_t *); -static void _rl_update_pos(void); - -static HIST_ENTRY rl_he; - -/* ARGSUSED */ -static char * -_get_prompt(EditLine *el __attribute__((__unused__))) -{ - rl_already_prompted = 1; - return rl_prompt; -} - - -/* - * read one key from user defined input function - */ -static int -/*ARGSUSED*/ -_getc_function(EditLine *el __attribute__((__unused__)), wchar_t *c) -{ - int i; - - i = (*rl_getc_function)(rl_instream); - if (i == -1) - return 0; - *c = (wchar_t)i; - return 1; -} - -static void -_resize_fun(EditLine *el, void *a) -{ - const LineInfo *li; - char **ap = a; - - li = el_line(el); - /* a cheesy way to get rid of const cast. */ - *ap = memchr(li->buffer, *li->buffer, (size_t)1); -} - -static const char * -_default_history_file(void) -{ - struct passwd *p; - static char *path; - size_t len; - - if (path) - return path; - - if ((p = getpwuid(getuid())) == NULL) - return NULL; - - len = strlen(p->pw_dir) + sizeof("/.history"); - if ((path = malloc(len)) == NULL) - return NULL; - - (void)snprintf(path, len, "%s/.history", p->pw_dir); - return path; -} - -/* - * READLINE compatibility stuff - */ - -/* - * Set the prompt - */ -int -rl_set_prompt(const char *prompt) -{ - char *p; - - if (!prompt) - prompt = ""; - if (rl_prompt != NULL && strcmp(rl_prompt, prompt) == 0) - return 0; - if (rl_prompt) - el_free(rl_prompt); - rl_prompt = strdup(prompt); - if (rl_prompt == NULL) - return -1; - - while ((p = strchr(rl_prompt, RL_PROMPT_END_IGNORE)) != NULL) - *p = RL_PROMPT_START_IGNORE; - - return 0; -} - -/* - * initialize rl compat stuff - */ -int -rl_initialize(void) -{ - HistEvent ev; - int editmode = 1; - struct termios t; - - if (e != NULL) - el_end(e); - if (h != NULL) - history_end(h); - - if (!rl_instream) - rl_instream = stdin; - if (!rl_outstream) - rl_outstream = stdout; - - /* - * See if we don't really want to run the editor - */ - if (tcgetattr(fileno(rl_instream), &t) != -1 && (t.c_lflag & ECHO) == 0) - editmode = 0; - - e = el_init(rl_readline_name, rl_instream, rl_outstream, stderr); - - if (!editmode) - el_set(e, EL_EDITMODE, 0); - - h = history_init(); - if (!e || !h) - return -1; - - history(h, &ev, H_SETSIZE, INT_MAX); /* unlimited */ - history_length = 0; - max_input_history = INT_MAX; - el_set(e, EL_HIST, history, h); - - /* Setup resize function */ - el_set(e, EL_RESIZE, _resize_fun, &rl_line_buffer); - - /* setup getc function if valid */ - if (rl_getc_function) - el_set(e, EL_GETCFN, _getc_function); - - /* for proper prompt printing in readline() */ - if (rl_set_prompt("") == -1) { - history_end(h); - el_end(e); - return -1; - } - el_set(e, EL_PROMPT, _get_prompt, RL_PROMPT_START_IGNORE); - el_set(e, EL_SIGNAL, rl_catch_signals); - - /* set default mode to "emacs"-style and read setting afterwards */ - /* so this can be overridden */ - el_set(e, EL_EDITOR, "emacs"); - if (rl_terminal_name != NULL) - el_set(e, EL_TERMINAL, rl_terminal_name); - else - el_get(e, EL_TERMINAL, &rl_terminal_name); - - /* - * Word completion - this has to go AFTER rebinding keys - * to emacs-style. - */ - el_set(e, EL_ADDFN, "rl_complete", - "ReadLine compatible completion function", - _el_rl_complete); - el_set(e, EL_BIND, "^I", "rl_complete", NULL); - - /* - * Send TSTP when ^Z is pressed. - */ - el_set(e, EL_ADDFN, "rl_tstp", - "ReadLine compatible suspend function", - _el_rl_tstp); - el_set(e, EL_BIND, "^Z", "rl_tstp", NULL); - - /* - * Set some readline compatible key-bindings. - */ - el_set(e, EL_BIND, "^R", "em-inc-search-prev", NULL); - - /* - * Allow the use of Home/End keys. - */ - el_set(e, EL_BIND, "\\e[1~", "ed-move-to-beg", NULL); - el_set(e, EL_BIND, "\\e[4~", "ed-move-to-end", NULL); - el_set(e, EL_BIND, "\\e[7~", "ed-move-to-beg", NULL); - el_set(e, EL_BIND, "\\e[8~", "ed-move-to-end", NULL); - el_set(e, EL_BIND, "\\e[H", "ed-move-to-beg", NULL); - el_set(e, EL_BIND, "\\e[F", "ed-move-to-end", NULL); - - /* - * Allow the use of the Delete/Insert keys. - */ - el_set(e, EL_BIND, "\\e[3~", "ed-delete-next-char", NULL); - el_set(e, EL_BIND, "\\e[2~", "ed-quoted-insert", NULL); - - /* - * Ctrl-left-arrow and Ctrl-right-arrow for word moving. - */ - el_set(e, EL_BIND, "\\e[1;5C", "em-next-word", NULL); - el_set(e, EL_BIND, "\\e[1;5D", "ed-prev-word", NULL); - el_set(e, EL_BIND, "\\e[5C", "em-next-word", NULL); - el_set(e, EL_BIND, "\\e[5D", "ed-prev-word", NULL); - el_set(e, EL_BIND, "\\e\\e[C", "em-next-word", NULL); - el_set(e, EL_BIND, "\\e\\e[D", "ed-prev-word", NULL); - - /* read settings from configuration file */ - el_source(e, NULL); - - /* - * Unfortunately, some applications really do use rl_point - * and rl_line_buffer directly. - */ - _resize_fun(e, &rl_line_buffer); - _rl_update_pos(); - - if (rl_startup_hook) - (*rl_startup_hook)(NULL, 0); - - return 0; -} - - -/* - * read one line from input stream and return it, chomping - * trailing newline (if there is any) - */ -char * -readline(const char *p) -{ - HistEvent ev; - const char * volatile prompt = p; - int count; - const char *ret; - char *buf; - static int used_event_hook; - - if (e == NULL || h == NULL) - rl_initialize(); - - rl_done = 0; - - (void)setjmp(topbuf); - - /* update prompt accordingly to what has been passed */ - if (rl_set_prompt(prompt) == -1) - return NULL; - - if (rl_pre_input_hook) - (*rl_pre_input_hook)(NULL, 0); - - if (rl_event_hook && !(e->el_flags&NO_TTY)) { - el_set(e, EL_GETCFN, _rl_event_read_char); - used_event_hook = 1; - } - - if (!rl_event_hook && used_event_hook) { - el_set(e, EL_GETCFN, EL_BUILTIN_GETCFN); - used_event_hook = 0; - } - - rl_already_prompted = 0; - - /* get one line from input stream */ - ret = el_gets(e, &count); - - if (ret && count > 0) { - int lastidx; - - buf = strdup(ret); - if (buf == NULL) - return NULL; - lastidx = count - 1; - if (buf[lastidx] == '\n') - buf[lastidx] = '\0'; - } else - buf = NULL; - - history(h, &ev, H_GETSIZE); - history_length = ev.num; - - return buf; -} - -/* - * history functions - */ - -/* - * is normally called before application starts to use - * history expansion functions - */ -void -using_history(void) -{ - if (h == NULL || e == NULL) - rl_initialize(); - history_offset = history_length; -} - - -/* - * substitute ``what'' with ``with'', returning resulting string; if - * globally == 1, substitutes all occurrences of what, otherwise only the - * first one - */ -static char * -_rl_compat_sub(const char *str, const char *what, const char *with, - int globally) -{ - const char *s; - char *r, *result; - size_t len, with_len, what_len; - - len = strlen(str); - with_len = strlen(with); - what_len = strlen(what); - - /* calculate length we need for result */ - s = str; - while (*s) { - if (*s == *what && !strncmp(s, what, what_len)) { - len += with_len - what_len; - if (!globally) - break; - s += what_len; - } else - s++; - } - r = result = el_malloc((len + 1) * sizeof(*r)); - if (result == NULL) - return NULL; - s = str; - while (*s) { - if (*s == *what && !strncmp(s, what, what_len)) { - (void)strncpy(r, with, with_len); - r += with_len; - s += what_len; - if (!globally) { - (void)strcpy(r, s); - return result; - } - } else - *r++ = *s++; - } - *r = '\0'; - return result; -} - -static char *last_search_pat; /* last !?pat[?] search pattern */ -static char *last_search_match; /* last !?pat[?] that matched */ - -const char * -get_history_event(const char *cmd, int *cindex, int qchar) -{ - int idx, sign, sub, num, begin, ret; - size_t len; - char *pat; - const char *rptr; - HistEvent ev; - - idx = *cindex; - if (cmd[idx++] != history_expansion_char) - return NULL; - - /* find out which event to take */ - if (cmd[idx] == history_expansion_char || cmd[idx] == '\0') { - if (history(h, &ev, H_FIRST) != 0) - return NULL; - *cindex = cmd[idx]? (idx + 1):idx; - return ev.str; - } - sign = 0; - if (cmd[idx] == '-') { - sign = 1; - idx++; - } - - if ('0' <= cmd[idx] && cmd[idx] <= '9') { - HIST_ENTRY *he; - - num = 0; - while (cmd[idx] && '0' <= cmd[idx] && cmd[idx] <= '9') { - num = num * 10 + cmd[idx] - '0'; - idx++; - } - if (sign) - num = history_length - num + history_base; - - if (!(he = history_get(num))) - return NULL; - - *cindex = idx; - return he->line; - } - sub = 0; - if (cmd[idx] == '?') { - sub = 1; - idx++; - } - begin = idx; - while (cmd[idx]) { - if (cmd[idx] == '\n') - break; - if (sub && cmd[idx] == '?') - break; - if (!sub && (cmd[idx] == ':' || cmd[idx] == ' ' - || cmd[idx] == '\t' || cmd[idx] == qchar)) - break; - idx++; - } - len = (size_t)idx - (size_t)begin; - if (sub && cmd[idx] == '?') - idx++; - if (sub && len == 0 && last_search_pat && *last_search_pat) - pat = last_search_pat; - else if (len == 0) - return NULL; - else { - if ((pat = el_malloc((len + 1) * sizeof(*pat))) == NULL) - return NULL; - (void)strncpy(pat, cmd + begin, len); - pat[len] = '\0'; - } - - if (history(h, &ev, H_CURR) != 0) { - if (pat != last_search_pat) - el_free(pat); - return NULL; - } - num = ev.num; - - if (sub) { - if (pat != last_search_pat) { - if (last_search_pat) - el_free(last_search_pat); - last_search_pat = pat; - } - ret = history_search(pat, -1); - } else - ret = history_search_prefix(pat, -1); - - if (ret == -1) { - /* restore to end of list on failed search */ - history(h, &ev, H_FIRST); - (void)fprintf(rl_outstream, "%s: Event not found\n", pat); - if (pat != last_search_pat) - el_free(pat); - return NULL; - } - - if (sub && len) { - if (last_search_match && last_search_match != pat) - el_free(last_search_match); - last_search_match = pat; - } - - if (pat != last_search_pat) - el_free(pat); - - if (history(h, &ev, H_CURR) != 0) - return NULL; - *cindex = idx; - rptr = ev.str; - - /* roll back to original position */ - (void)history(h, &ev, H_SET, num); - - return rptr; -} - -/* - * the real function doing history expansion - takes as argument command - * to do and data upon which the command should be executed - * does expansion the way I've understood readline documentation - * - * returns 0 if data was not modified, 1 if it was and 2 if the string - * should be only printed and not executed; in case of error, - * returns -1 and *result points to NULL - * it's the caller's responsibility to free() the string returned in *result - */ -static int -_history_expand_command(const char *command, size_t offs, size_t cmdlen, - char **result) -{ - char *tmp, *search = NULL, *aptr; - const char *ptr, *cmd; - static char *from = NULL, *to = NULL; - int start, end, idx, has_mods = 0; - int p_on = 0, g_on = 0; - - *result = NULL; - aptr = NULL; - ptr = NULL; - - /* First get event specifier */ - idx = 0; - - if (strchr(":^*$", command[offs + 1])) { - char str[4]; - /* - * "!:" is shorthand for "!!:". - * "!^", "!*" and "!$" are shorthand for - * "!!:^", "!!:*" and "!!:$" respectively. - */ - str[0] = str[1] = '!'; - str[2] = '0'; - ptr = get_history_event(str, &idx, 0); - idx = (command[offs + 1] == ':')? 1:0; - has_mods = 1; - } else { - if (command[offs + 1] == '#') { - /* use command so far */ - if ((aptr = el_malloc((offs + 1) * sizeof(*aptr))) - == NULL) - return -1; - (void)strncpy(aptr, command, offs); - aptr[offs] = '\0'; - idx = 1; - } else { - int qchar; - - qchar = (offs > 0 && command[offs - 1] == '"')? '"':0; - ptr = get_history_event(command + offs, &idx, qchar); - } - has_mods = command[offs + (size_t)idx] == ':'; - } - - if (ptr == NULL && aptr == NULL) - return -1; - - if (!has_mods) { - *result = strdup(aptr ? aptr : ptr); - if (aptr) - el_free(aptr); - if (*result == NULL) - return -1; - return 1; - } - - cmd = command + offs + idx + 1; - - /* Now parse any word designators */ - - if (*cmd == '%') /* last word matched by ?pat? */ - tmp = strdup(last_search_match? last_search_match:""); - else if (strchr("^*$-0123456789", *cmd)) { - start = end = -1; - if (*cmd == '^') - start = end = 1, cmd++; - else if (*cmd == '$') - start = -1, cmd++; - else if (*cmd == '*') - start = 1, cmd++; - else if (*cmd == '-' || isdigit((unsigned char) *cmd)) { - start = 0; - while (*cmd && '0' <= *cmd && *cmd <= '9') - start = start * 10 + *cmd++ - '0'; - - if (*cmd == '-') { - if (isdigit((unsigned char) cmd[1])) { - cmd++; - end = 0; - while (*cmd && '0' <= *cmd && *cmd <= '9') - end = end * 10 + *cmd++ - '0'; - } else if (cmd[1] == '$') { - cmd += 2; - end = -1; - } else { - cmd++; - end = -2; - } - } else if (*cmd == '*') - end = -1, cmd++; - else - end = start; - } - tmp = history_arg_extract(start, end, aptr? aptr:ptr); - if (tmp == NULL) { - (void)fprintf(rl_outstream, "%s: Bad word specifier", - command + offs + idx); - if (aptr) - el_free(aptr); - return -1; - } - } else - tmp = strdup(aptr? aptr:ptr); - - if (aptr) - el_free(aptr); - - if (*cmd == '\0' || ((size_t)(cmd - (command + offs)) >= cmdlen)) { - *result = tmp; - return 1; - } - - for (; *cmd; cmd++) { - if (*cmd == ':') - continue; - else if (*cmd == 'h') { /* remove trailing path */ - if ((aptr = strrchr(tmp, '/')) != NULL) - *aptr = '\0'; - } else if (*cmd == 't') { /* remove leading path */ - if ((aptr = strrchr(tmp, '/')) != NULL) { - aptr = strdup(aptr + 1); - el_free(tmp); - tmp = aptr; - } - } else if (*cmd == 'r') { /* remove trailing suffix */ - if ((aptr = strrchr(tmp, '.')) != NULL) - *aptr = '\0'; - } else if (*cmd == 'e') { /* remove all but suffix */ - if ((aptr = strrchr(tmp, '.')) != NULL) { - aptr = strdup(aptr); - el_free(tmp); - tmp = aptr; - } - } else if (*cmd == 'p') /* print only */ - p_on = 1; - else if (*cmd == 'g') - g_on = 2; - else if (*cmd == 's' || *cmd == '&') { - char *what, *with, delim; - size_t len, from_len; - size_t size; - - if (*cmd == '&' && (from == NULL || to == NULL)) - continue; - else if (*cmd == 's') { - delim = *(++cmd), cmd++; - size = 16; - what = el_realloc(from, size * sizeof(*what)); - if (what == NULL) { - el_free(from); - el_free(tmp); - return 0; - } - len = 0; - for (; *cmd && *cmd != delim; cmd++) { - if (*cmd == '\\' && cmd[1] == delim) - cmd++; - if (len >= size) { - char *nwhat; - nwhat = el_realloc(what, - (size <<= 1) * - sizeof(*nwhat)); - if (nwhat == NULL) { - el_free(what); - el_free(tmp); - return 0; - } - what = nwhat; - } - what[len++] = *cmd; - } - what[len] = '\0'; - from = what; - if (*what == '\0') { - el_free(what); - if (search) { - from = strdup(search); - if (from == NULL) { - el_free(tmp); - return 0; - } - } else { - from = NULL; - el_free(tmp); - return -1; - } - } - cmd++; /* shift after delim */ - if (!*cmd) - continue; - - size = 16; - with = el_realloc(to, size * sizeof(*with)); - if (with == NULL) { - el_free(to); - el_free(tmp); - return -1; - } - len = 0; - from_len = strlen(from); - for (; *cmd && *cmd != delim; cmd++) { - if (len + from_len + 1 >= size) { - char *nwith; - size += from_len + 1; - nwith = el_realloc(with, - size * sizeof(*nwith)); - if (nwith == NULL) { - el_free(with); - el_free(tmp); - return -1; - } - with = nwith; - } - if (*cmd == '&') { - /* safe */ - (void)strcpy(&with[len], from); - len += from_len; - continue; - } - if (*cmd == '\\' - && (*(cmd + 1) == delim - || *(cmd + 1) == '&')) - cmd++; - with[len++] = *cmd; - } - with[len] = '\0'; - to = with; - } - - aptr = _rl_compat_sub(tmp, from, to, g_on); - if (aptr) { - el_free(tmp); - tmp = aptr; - } - g_on = 0; - } - } - *result = tmp; - return p_on? 2:1; -} - - -/* - * csh-style history expansion - */ -int -history_expand(char *str, char **output) -{ - int ret = 0; - size_t idx, i, size; - char *tmp, *result; - - if (h == NULL || e == NULL) - rl_initialize(); - - if (history_expansion_char == 0) { - *output = strdup(str); - return 0; - } - - *output = NULL; - if (str[0] == history_subst_char) { - /* ^foo^foo2^ is equivalent to !!:s^foo^foo2^ */ - *output = el_malloc((strlen(str) + 4 + 1) * sizeof(**output)); - if (*output == NULL) - return 0; - (*output)[0] = (*output)[1] = history_expansion_char; - (*output)[2] = ':'; - (*output)[3] = 's'; - (void)strcpy((*output) + 4, str); - str = *output; - } else { - *output = strdup(str); - if (*output == NULL) - return 0; - } - -#define ADD_STRING(what, len, fr) \ - { \ - if (idx + len + 1 > size) { \ - char *nresult = el_realloc(result, \ - (size += len + 1) * sizeof(*nresult)); \ - if (nresult == NULL) { \ - el_free(*output); \ - if (/*CONSTCOND*/fr) \ - el_free(tmp); \ - return 0; \ - } \ - result = nresult; \ - } \ - (void)strncpy(&result[idx], what, len); \ - idx += len; \ - result[idx] = '\0'; \ - } - - result = NULL; - size = idx = 0; - tmp = NULL; - for (i = 0; str[i];) { - int qchar, loop_again; - size_t len, start, j; - - qchar = 0; - loop_again = 1; - start = j = i; -loop: - for (; str[j]; j++) { - if (str[j] == '\\' && - str[j + 1] == history_expansion_char) { - len = strlen(&str[j + 1]) + 1; - memmove(&str[j], &str[j + 1], len); - continue; - } - if (!loop_again) { - if (isspace((unsigned char) str[j]) - || str[j] == qchar) - break; - } - if (str[j] == history_expansion_char - && !strchr(history_no_expand_chars, str[j + 1]) - && (!history_inhibit_expansion_function || - (*history_inhibit_expansion_function)(str, - (int)j) == 0)) - break; - } - - if (str[j] && loop_again) { - i = j; - qchar = (j > 0 && str[j - 1] == '"' )? '"':0; - j++; - if (str[j] == history_expansion_char) - j++; - loop_again = 0; - goto loop; - } - len = i - start; - ADD_STRING(&str[start], len, 0); - - if (str[i] == '\0' || str[i] != history_expansion_char) { - len = j - i; - ADD_STRING(&str[i], len, 0); - if (start == 0) - ret = 0; - else - ret = 1; - break; - } - ret = _history_expand_command (str, i, (j - i), &tmp); - if (ret > 0 && tmp) { - len = strlen(tmp); - ADD_STRING(tmp, len, 1); - } - if (tmp) { - el_free(tmp); - tmp = NULL; - } - i = j; - } - - /* ret is 2 for "print only" option */ - if (ret == 2) { - add_history(result); -#ifdef GDB_411_HACK - /* gdb 4.11 has been shipped with readline, where */ - /* history_expand() returned -1 when the line */ - /* should not be executed; in readline 2.1+ */ - /* it should return 2 in such a case */ - ret = -1; -#endif - } - el_free(*output); - *output = result; - - return ret; -} - -/* -* Return a string consisting of arguments of "str" from "start" to "end". -*/ -char * -history_arg_extract(int start, int end, const char *str) -{ - size_t i, len, max; - char **arr, *result = NULL; - - arr = history_tokenize(str); - if (!arr) - return NULL; - if (arr && *arr == NULL) - goto out; - - for (max = 0; arr[max]; max++) - continue; - max--; - - if (start == '$') - start = (int)max; - if (end == '$') - end = (int)max; - if (end < 0) - end = (int)max + end + 1; - if (start < 0) - start = end; - - if (start < 0 || end < 0 || (size_t)start > max || - (size_t)end > max || start > end) - goto out; - - for (i = (size_t)start, len = 0; i <= (size_t)end; i++) - len += strlen(arr[i]) + 1; - len++; - result = el_malloc(len * sizeof(*result)); - if (result == NULL) - goto out; - - for (i = (size_t)start, len = 0; i <= (size_t)end; i++) { - (void)strcpy(result + len, arr[i]); - len += strlen(arr[i]); - if (i < (size_t)end) - result[len++] = ' '; - } - result[len] = '\0'; - -out: - for (i = 0; arr[i]; i++) - el_free(arr[i]); - el_free(arr); - - return result; -} - -/* - * Parse the string into individual tokens, - * similar to how shell would do it. - */ -char ** -history_tokenize(const char *str) -{ - int size = 1, idx = 0, i, start; - size_t len; - char **result = NULL, *temp, delim = '\0'; - - for (i = 0; str[i];) { - while (isspace((unsigned char) str[i])) - i++; - start = i; - for (; str[i];) { - if (str[i] == '\\') { - if (str[i+1] != '\0') - i++; - } else if (str[i] == delim) - delim = '\0'; - else if (!delim && - (isspace((unsigned char) str[i]) || - strchr("()<>;&|$", str[i]))) - break; - else if (!delim && strchr("'`\"", str[i])) - delim = str[i]; - if (str[i]) - i++; - } - - if (idx + 2 >= size) { - char **nresult; - size <<= 1; - nresult = el_realloc(result, (size_t)size * sizeof(*nresult)); - if (nresult == NULL) { - el_free(result); - return NULL; - } - result = nresult; - } - len = (size_t)i - (size_t)start; - temp = el_malloc((size_t)(len + 1) * sizeof(*temp)); - if (temp == NULL) { - for (i = 0; i < idx; i++) - el_free(result[i]); - el_free(result); - return NULL; - } - (void)strncpy(temp, &str[start], len); - temp[len] = '\0'; - result[idx++] = temp; - result[idx] = NULL; - if (str[i]) - i++; - } - return result; -} - - -/* - * limit size of history record to ``max'' events - */ -void -stifle_history(int max) -{ - HistEvent ev; - HIST_ENTRY *he; - - if (h == NULL || e == NULL) - rl_initialize(); - - if (history(h, &ev, H_SETSIZE, max) == 0) { - max_input_history = max; - if (history_length > max) - history_base = history_length - max; - while (history_length > max) { - he = remove_history(0); - el_free(he->data); - el_free((void *)(unsigned long)he->line); - el_free(he); - } - } -} - - -/* - * "unlimit" size of history - set the limit to maximum allowed int value - */ -int -unstifle_history(void) -{ - HistEvent ev; - int omax; - - history(h, &ev, H_SETSIZE, INT_MAX); - omax = max_input_history; - max_input_history = INT_MAX; - return omax; /* some value _must_ be returned */ -} - - -int -history_is_stifled(void) -{ - - /* cannot return true answer */ - return max_input_history != INT_MAX; -} - -static const char _history_tmp_template[] = "/tmp/.historyXXXXXX"; - -int -history_truncate_file (const char *filename, int nlines) -{ - int ret = 0; - FILE *fp, *tp; - char template[sizeof(_history_tmp_template)]; - char buf[4096]; - int fd; - char *cp; - off_t off; - int count = 0; - ssize_t left = 0; - - if (filename == NULL && (filename = _default_history_file()) == NULL) - return errno; - if ((fp = fopen(filename, "r+")) == NULL) - return errno; - strcpy(template, _history_tmp_template); - if ((fd = mkstemp(template)) == -1) { - ret = errno; - goto out1; - } - - if ((tp = fdopen(fd, "r+")) == NULL) { - close(fd); - ret = errno; - goto out2; - } - - for(;;) { - if (fread(buf, sizeof(buf), (size_t)1, fp) != 1) { - if (ferror(fp)) { - ret = errno; - break; - } - if (fseeko(fp, (off_t)sizeof(buf) * count, SEEK_SET) == - (off_t)-1) { - ret = errno; - break; - } - left = (ssize_t)fread(buf, (size_t)1, sizeof(buf), fp); - if (ferror(fp)) { - ret = errno; - break; - } - if (left == 0) { - count--; - left = sizeof(buf); - } else if (fwrite(buf, (size_t)left, (size_t)1, tp) - != 1) { - ret = errno; - break; - } - fflush(tp); - break; - } - if (fwrite(buf, sizeof(buf), (size_t)1, tp) != 1) { - ret = errno; - break; - } - count++; - } - if (ret) - goto out3; - cp = buf + left - 1; - if(*cp != '\n') - cp++; - for(;;) { - while (--cp >= buf) { - if (*cp == '\n') { - if (--nlines == 0) { - if (++cp >= buf + sizeof(buf)) { - count++; - cp = buf; - } - break; - } - } - } - if (nlines <= 0 || count == 0) - break; - count--; - if (fseeko(tp, (off_t)sizeof(buf) * count, SEEK_SET) < 0) { - ret = errno; - break; - } - if (fread(buf, sizeof(buf), (size_t)1, tp) != 1) { - if (ferror(tp)) { - ret = errno; - break; - } - ret = EAGAIN; - break; - } - cp = buf + sizeof(buf); - } - - if (ret || nlines > 0) - goto out3; - - if (fseeko(fp, (off_t)0, SEEK_SET) == (off_t)-1) { - ret = errno; - goto out3; - } - - if (fseeko(tp, (off_t)sizeof(buf) * count + (cp - buf), SEEK_SET) == - (off_t)-1) { - ret = errno; - goto out3; - } - - for(;;) { - if ((left = (ssize_t)fread(buf, (size_t)1, sizeof(buf), tp)) == 0) { - if (ferror(fp)) - ret = errno; - break; - } - if (fwrite(buf, (size_t)left, (size_t)1, fp) != 1) { - ret = errno; - break; - } - } - fflush(fp); - if((off = ftello(fp)) > 0) - (void)ftruncate(fileno(fp), off); -out3: - fclose(tp); -out2: - unlink(template); -out1: - fclose(fp); - - return ret; -} - - -/* - * read history from a file given - */ -int -read_history(const char *filename) -{ - HistEvent ev; - - if (h == NULL || e == NULL) - rl_initialize(); - if (filename == NULL && (filename = _default_history_file()) == NULL) - return errno; - return history(h, &ev, H_LOAD, filename) == -1 ? - (errno ? errno : EINVAL) : 0; -} - - -/* - * write history to a file given - */ -int -write_history(const char *filename) -{ - HistEvent ev; - - if (h == NULL || e == NULL) - rl_initialize(); - if (filename == NULL && (filename = _default_history_file()) == NULL) - return errno; - return history(h, &ev, H_SAVE, filename) == -1 ? - (errno ? errno : EINVAL) : 0; -} - - -/* - * returns history ``num''th event - * - * returned pointer points to static variable - */ -HIST_ENTRY * -history_get(int num) -{ - static HIST_ENTRY she; - HistEvent ev; - int curr_num; - - if (h == NULL || e == NULL) - rl_initialize(); - - if (num < history_base) - return NULL; - - /* save current position */ - if (history(h, &ev, H_CURR) != 0) - return NULL; - curr_num = ev.num; - - /* - * use H_DELDATA to set to nth history (without delete) by passing - * (void **)-1 -- as in history_set_pos - */ - if (history(h, &ev, H_DELDATA, num - history_base, (void **)-1) != 0) - goto out; - - /* get current entry */ - if (history(h, &ev, H_CURR) != 0) - goto out; - if (history(h, &ev, H_NEXT_EVDATA, ev.num, &she.data) != 0) - goto out; - she.line = ev.str; - - /* restore pointer to where it was */ - (void)history(h, &ev, H_SET, curr_num); - - return &she; - -out: - /* restore pointer to where it was */ - (void)history(h, &ev, H_SET, curr_num); - return NULL; -} - - -/* - * add the line to history table - */ -int -add_history(const char *line) -{ - HistEvent ev; - - if (h == NULL || e == NULL) - rl_initialize(); - - if (history(h, &ev, H_ENTER, line) == -1) - return 0; - - (void)history(h, &ev, H_GETSIZE); - if (ev.num == history_length) - history_base++; - else - history_length = ev.num; - return 0; -} - - -/* - * remove the specified entry from the history list and return it. - */ -HIST_ENTRY * -remove_history(int num) -{ - HIST_ENTRY *he; - HistEvent ev; - - if (h == NULL || e == NULL) - rl_initialize(); - - if ((he = el_malloc(sizeof(*he))) == NULL) - return NULL; - - if (history(h, &ev, H_DELDATA, num, &he->data) != 0) { - el_free(he); - return NULL; - } - - he->line = ev.str; - if (history(h, &ev, H_GETSIZE) == 0) - history_length = ev.num; - - return he; -} - - -/* - * replace the line and data of the num-th entry - */ -HIST_ENTRY * -replace_history_entry(int num, const char *line, histdata_t data) -{ - HIST_ENTRY *he; - HistEvent ev; - int curr_num; - - if (h == NULL || e == NULL) - rl_initialize(); - - /* save current position */ - if (history(h, &ev, H_CURR) != 0) - return NULL; - curr_num = ev.num; - - /* start from the oldest */ - if (history(h, &ev, H_LAST) != 0) - return NULL; /* error */ - - if ((he = el_malloc(sizeof(*he))) == NULL) - return NULL; - - /* look forwards for event matching specified offset */ - if (history(h, &ev, H_NEXT_EVDATA, num, &he->data)) - goto out; - - he->line = strdup(ev.str); - if (he->line == NULL) - goto out; - - if (history(h, &ev, H_REPLACE, line, data)) - goto out; - - /* restore pointer to where it was */ - if (history(h, &ev, H_SET, curr_num)) - goto out; - - return he; -out: - el_free(he); - return NULL; -} - -/* - * clear the history list - delete all entries - */ -void -clear_history(void) -{ - HistEvent ev; - - if (h == NULL || e == NULL) - rl_initialize(); - - (void)history(h, &ev, H_CLEAR); - history_offset = history_length = 0; -} - - -/* - * returns offset of the current history event - */ -int -where_history(void) -{ - return history_offset; -} - -static HIST_ENTRY **_history_listp; -static HIST_ENTRY *_history_list; - -HIST_ENTRY ** -history_list(void) -{ - HistEvent ev; - HIST_ENTRY **nlp, *nl; - int i; - - if (history(h, &ev, H_LAST) != 0) - return NULL; - - if ((nlp = el_realloc(_history_listp, - (size_t)history_length * sizeof(*nlp))) == NULL) - return NULL; - _history_listp = nlp; - - if ((nl = el_realloc(_history_list, - (size_t)history_length * sizeof(*nl))) == NULL) - return NULL; - _history_list = nl; - - i = 0; - do { - _history_listp[i] = &_history_list[i]; - _history_list[i].line = ev.str; - _history_list[i].data = NULL; - if (i++ == history_length) - abort(); - } while (history(h, &ev, H_PREV) == 0); - return _history_listp; -} - -/* - * returns current history event or NULL if there is no such event - */ -HIST_ENTRY * -current_history(void) -{ - HistEvent ev; - - if (history(h, &ev, H_PREV_EVENT, history_offset + 1) != 0) - return NULL; - - rl_he.line = ev.str; - rl_he.data = NULL; - return &rl_he; -} - - -/* - * returns total number of bytes history events' data are using - */ -int -history_total_bytes(void) -{ - HistEvent ev; - int curr_num; - size_t size; - - if (history(h, &ev, H_CURR) != 0) - return -1; - curr_num = ev.num; - - (void)history(h, &ev, H_FIRST); - size = 0; - do - size += strlen(ev.str) * sizeof(*ev.str); - while (history(h, &ev, H_NEXT) == 0); - - /* get to the same position as before */ - history(h, &ev, H_PREV_EVENT, curr_num); - - return (int)size; -} - - -/* - * sets the position in the history list to ``pos'' - */ -int -history_set_pos(int pos) -{ - if (pos >= history_length || pos < 0) - return 0; - - history_offset = pos; - return 1; -} - - -/* - * returns previous event in history and shifts pointer accordingly - * Note that readline and editline define directions in opposite ways. - */ -HIST_ENTRY * -previous_history(void) -{ - HistEvent ev; - - if (history_offset == 0) - return NULL; - - if (history(h, &ev, H_LAST) != 0) - return NULL; - - history_offset--; - return current_history(); -} - - -/* - * returns next event in history and shifts pointer accordingly - */ -HIST_ENTRY * -next_history(void) -{ - HistEvent ev; - - if (history_offset >= history_length) - return NULL; - - if (history(h, &ev, H_LAST) != 0) - return NULL; - - history_offset++; - return current_history(); -} - - -/* - * searches for first history event containing the str - */ -int -history_search(const char *str, int direction) -{ - HistEvent ev; - const char *strp; - int curr_num; - - if (history(h, &ev, H_CURR) != 0) - return -1; - curr_num = ev.num; - - for (;;) { - if ((strp = strstr(ev.str, str)) != NULL) - return (int)(strp - ev.str); - if (history(h, &ev, direction < 0 ? H_NEXT:H_PREV) != 0) - break; - } - (void)history(h, &ev, H_SET, curr_num); - return -1; -} - - -/* - * searches for first history event beginning with str - */ -int -history_search_prefix(const char *str, int direction) -{ - HistEvent ev; - - return (history(h, &ev, direction < 0 ? - H_PREV_STR : H_NEXT_STR, str)); -} - - -/* - * search for event in history containing str, starting at offset - * abs(pos); continue backward, if pos<0, forward otherwise - */ -/* ARGSUSED */ -int -history_search_pos(const char *str, - int direction __attribute__((__unused__)), int pos) -{ - HistEvent ev; - int curr_num, off; - - off = (pos > 0) ? pos : -pos; - pos = (pos > 0) ? 1 : -1; - - if (history(h, &ev, H_CURR) != 0) - return -1; - curr_num = ev.num; - - if (!history_set_pos(off) || history(h, &ev, H_CURR) != 0) - return -1; - - for (;;) { - if (strstr(ev.str, str)) - return off; - if (history(h, &ev, (pos < 0) ? H_PREV : H_NEXT) != 0) - break; - } - - /* set "current" pointer back to previous state */ - (void)history(h, &ev, - pos < 0 ? H_NEXT_EVENT : H_PREV_EVENT, curr_num); - - return -1; -} - - -/********************************/ -/* completion functions */ - -char * -tilde_expand(char *name) -{ - return fn_tilde_expand(name); -} - -char * -filename_completion_function(const char *name, int state) -{ - return fn_filename_completion_function(name, state); -} - -/* - * a completion generator for usernames; returns _first_ username - * which starts with supplied text - * text contains a partial username preceded by random character - * (usually '~'); state resets search from start (??? should we do that anyway) - * it's the caller's responsibility to free the returned value - */ -char * -username_completion_function(const char *text, int state) -{ -#if defined(HAVE_GETPW_R_POSIX) || defined(HAVE_GETPW_R_DRAFT) - struct passwd pwres; - char pwbuf[1024]; -#endif - struct passwd *pass = NULL; - - if (text[0] == '\0') - return NULL; - - if (*text == '~') - text++; - - if (state == 0) - setpwent(); - - while ( -#if defined(HAVE_GETPW_R_POSIX) || defined(HAVE_GETPW_R_DRAFT) - getpwent_r(&pwres, pwbuf, sizeof(pwbuf), &pass) == 0 && pass != NULL -#else - (pass = getpwent()) != NULL -#endif - && text[0] == pass->pw_name[0] - && strcmp(text, pass->pw_name) == 0) - continue; - - if (pass == NULL) { - endpwent(); - return NULL; - } - return strdup(pass->pw_name); -} - - -/* - * el-compatible wrapper to send TSTP on ^Z - */ -/* ARGSUSED */ -static unsigned char -_el_rl_tstp(EditLine *el __attribute__((__unused__)), int ch __attribute__((__unused__))) -{ - (void)kill(0, SIGTSTP); - return CC_NORM; -} - -static const char * -/*ARGSUSED*/ -_rl_completion_append_character_function(const char *dummy - __attribute__((__unused__))) -{ - static char buf[2]; - buf[0] = (char)rl_completion_append_character; - buf[1] = '\0'; - return buf; -} - - -/* - * Display list of strings in columnar format on readline's output stream. - * 'matches' is list of strings, 'len' is number of strings in 'matches', - * 'max' is maximum length of string in 'matches'. - */ -void -rl_display_match_list(char **matches, int len, int max) -{ - - fn_display_match_list(e, matches, (size_t)len, (size_t)max, - _rl_completion_append_character_function); -} - -/* - * complete word at current point - */ -/* ARGSUSED */ -int -rl_complete(int ignore __attribute__((__unused__)), int invoking_key) -{ - static ct_buffer_t wbreak_conv, sprefix_conv; - char *breakchars; - - if (h == NULL || e == NULL) - rl_initialize(); - - if (rl_inhibit_completion) { - char arr[2]; - arr[0] = (char)invoking_key; - arr[1] = '\0'; - el_insertstr(e, arr); - return CC_REFRESH; - } - - if (rl_completion_word_break_hook != NULL) - breakchars = (*rl_completion_word_break_hook)(); - else - breakchars = rl_basic_word_break_characters; - - _rl_update_pos(); - - /* Just look at how many global variables modify this operation! */ - return fn_complete(e, - (rl_compentry_func_t *)rl_completion_entry_function, - rl_attempted_completion_function, - ct_decode_string(rl_basic_word_break_characters, &wbreak_conv), - ct_decode_string(breakchars, &sprefix_conv), - _rl_completion_append_character_function, - (size_t)rl_completion_query_items, - &rl_completion_type, &rl_attempted_completion_over, - &rl_point, &rl_end); - - -} - - -/* ARGSUSED */ -static unsigned char -_el_rl_complete(EditLine *el __attribute__((__unused__)), int ch) -{ - return (unsigned char)rl_complete(0, ch); -} - -/* - * misc other functions - */ - -/* - * bind key c to readline-type function func - */ -int -rl_bind_key(int c, rl_command_func_t *func) -{ - int retval = -1; - - if (h == NULL || e == NULL) - rl_initialize(); - - if (func == rl_insert) { - /* XXX notice there is no range checking of ``c'' */ - e->el_map.key[c] = ED_INSERT; - retval = 0; - } - return retval; -} - - -/* - * read one key from input - handles chars pushed back - * to input stream also - */ -int -rl_read_key(void) -{ - char fooarr[2 * sizeof(int)]; - - if (e == NULL || h == NULL) - rl_initialize(); - - return el_getc(e, fooarr); -} - - -/* - * reset the terminal - */ -/* ARGSUSED */ -void -rl_reset_terminal(const char *p __attribute__((__unused__))) -{ - - if (h == NULL || e == NULL) - rl_initialize(); - el_reset(e); -} - - -/* - * insert character ``c'' back into input stream, ``count'' times - */ -int -rl_insert(int count, int c) -{ - char arr[2]; - - if (h == NULL || e == NULL) - rl_initialize(); - - /* XXX - int -> char conversion can lose on multichars */ - arr[0] = (char)c; - arr[1] = '\0'; - - for (; count > 0; count--) - el_push(e, arr); - - return 0; -} - -int -rl_insert_text(const char *text) -{ - if (!text || *text == 0) - return 0; - - if (h == NULL || e == NULL) - rl_initialize(); - - if (el_insertstr(e, text) < 0) - return 0; - return (int)strlen(text); -} - -/*ARGSUSED*/ -int -rl_newline(int count __attribute__((__unused__)), - int c __attribute__((__unused__))) -{ - /* - * Readline-4.0 appears to ignore the args. - */ - return rl_insert(1, '\n'); -} - -/*ARGSUSED*/ -static unsigned char -rl_bind_wrapper(EditLine *el __attribute__((__unused__)), unsigned char c) -{ - if (map[c] == NULL) - return CC_ERROR; - - _rl_update_pos(); - - (*map[c])(1, c); - - /* If rl_done was set by the above call, deal with it here */ - if (rl_done) - return CC_EOF; - - return CC_NORM; -} - -int -rl_add_defun(const char *name, rl_command_func_t *fun, int c) -{ - char dest[8]; - if ((size_t)c >= sizeof(map) / sizeof(map[0]) || c < 0) - return -1; - map[(unsigned char)c] = fun; - el_set(e, EL_ADDFN, name, name, rl_bind_wrapper); - vis(dest, c, VIS_WHITE|VIS_NOSLASH, 0); - el_set(e, EL_BIND, dest, name, NULL); - return 0; -} - -void -rl_callback_read_char(void) -{ - int count = 0, done = 0; - const char *buf = el_gets(e, &count); - char *wbuf; - - if (buf == NULL || count-- <= 0) - return; - if (count == 0 && buf[0] == e->el_tty.t_c[TS_IO][C_EOF]) - done = 1; - if (buf[count] == '\n' || buf[count] == '\r') - done = 2; - - if (done && rl_linefunc != NULL) { - el_set(e, EL_UNBUFFERED, 0); - if (done == 2) { - if ((wbuf = strdup(buf)) != NULL) - wbuf[count] = '\0'; - } else - wbuf = NULL; - (*(void (*)(const char *))rl_linefunc)(wbuf); - el_set(e, EL_UNBUFFERED, 1); - } -} - -void -rl_callback_handler_install(const char *prompt, rl_vcpfunc_t *linefunc) -{ - if (e == NULL) { - rl_initialize(); - } - (void)rl_set_prompt(prompt); - rl_linefunc = linefunc; - el_set(e, EL_UNBUFFERED, 1); -} - -void -rl_callback_handler_remove(void) -{ - el_set(e, EL_UNBUFFERED, 0); - rl_linefunc = NULL; -} - -void -rl_redisplay(void) -{ - char a[2]; - a[0] = (char)e->el_tty.t_c[TS_IO][C_REPRINT]; - a[1] = '\0'; - el_push(e, a); -} - -int -rl_get_previous_history(int count, int key) -{ - char a[2]; - a[0] = (char)key; - a[1] = '\0'; - while (count--) - el_push(e, a); - return 0; -} - -void -/*ARGSUSED*/ -rl_prep_terminal(int meta_flag __attribute__((__unused__))) -{ - el_set(e, EL_PREP_TERM, 1); -} - -void -rl_deprep_terminal(void) -{ - el_set(e, EL_PREP_TERM, 0); -} - -int -rl_read_init_file(const char *s) -{ - return el_source(e, s); -} - -int -rl_parse_and_bind(const char *line) -{ - const char **argv; - int argc; - Tokenizer *tok; - - tok = tok_init(NULL); - tok_str(tok, line, &argc, &argv); - argc = el_parse(e, argc, argv); - tok_end(tok); - return argc ? 1 : 0; -} - -int -rl_variable_bind(const char *var, const char *value) -{ - /* - * The proper return value is undocument, but this is what the - * readline source seems to do. - */ - return el_set(e, EL_BIND, "", var, value, NULL) == -1 ? 1 : 0; -} - -void -rl_stuff_char(int c) -{ - char buf[2]; - - buf[0] = (char)c; - buf[1] = '\0'; - el_insertstr(e, buf); -} - -static int -_rl_event_read_char(EditLine *el, wchar_t *wc) -{ - char ch; - int n; - ssize_t num_read = 0; - - ch = '\0'; - *wc = L'\0'; - while (rl_event_hook) { - - (*rl_event_hook)(); - -#if defined(FIONREAD) - if (ioctl(el->el_infd, FIONREAD, &n) < 0) - return -1; - if (n) - num_read = read(el->el_infd, &ch, (size_t)1); - else - num_read = 0; -#elif defined(F_SETFL) && defined(O_NDELAY) - if ((n = fcntl(el->el_infd, F_GETFL, 0)) < 0) - return -1; - if (fcntl(el->el_infd, F_SETFL, n|O_NDELAY) < 0) - return -1; - num_read = read(el->el_infd, &ch, 1); - if (fcntl(el->el_infd, F_SETFL, n)) - return -1; -#else - /* not non-blocking, but what you gonna do? */ - num_read = read(el->el_infd, &ch, 1); - return -1; -#endif - - if (num_read < 0 && errno == EAGAIN) - continue; - if (num_read == 0) - continue; - break; - } - if (!rl_event_hook) - el_set(el, EL_GETCFN, EL_BUILTIN_GETCFN); - *wc = (wchar_t)ch; - return (int)num_read; -} - -static void -_rl_update_pos(void) -{ - const LineInfo *li = el_line(e); - - rl_point = (int)(li->cursor - li->buffer); - rl_end = (int)(li->lastchar - li->buffer); -} - -void -rl_get_screen_size(int *rows, int *cols) -{ - if (rows) - el_get(e, EL_GETTC, "li", rows, (void *)0); - if (cols) - el_get(e, EL_GETTC, "co", cols, (void *)0); -} - -void -rl_set_screen_size(int rows, int cols) -{ - char buf[64]; - (void)snprintf(buf, sizeof(buf), "%d", rows); - el_set(e, EL_SETTC, "li", buf, NULL); - (void)snprintf(buf, sizeof(buf), "%d", cols); - el_set(e, EL_SETTC, "co", buf, NULL); -} - -char ** -rl_completion_matches(const char *str, rl_compentry_func_t *fun) -{ - size_t len, max, i, j, min; - char **list, *match, *a, *b; - - len = 1; - max = 10; - if ((list = el_malloc(max * sizeof(*list))) == NULL) - return NULL; - - while ((match = (*fun)(str, (int)(len - 1))) != NULL) { - list[len++] = match; - if (len == max) { - char **nl; - max += 10; - if ((nl = el_realloc(list, max * sizeof(*nl))) == NULL) - goto out; - list = nl; - } - } - if (len == 1) - goto out; - list[len] = NULL; - if (len == 2) { - if ((list[0] = strdup(list[1])) == NULL) - goto out; - return list; - } - qsort(&list[1], len - 1, sizeof(*list), - (int (*)(const void *, const void *)) strcmp); - min = SIZE_MAX; - for (i = 1, a = list[i]; i < len - 1; i++, a = b) { - b = list[i + 1]; - for (j = 0; a[j] && a[j] == b[j]; j++) - continue; - if (min > j) - min = j; - } - if (min == 0 && *str) { - if ((list[0] = strdup(str)) == NULL) - goto out; - } else { - if ((list[0] = el_malloc((min + 1) * sizeof(*list[0]))) == NULL) - goto out; - (void)memcpy(list[0], list[1], min); - list[0][min] = '\0'; - } - return list; - -out: - el_free(list); - return NULL; -} - -char * -rl_filename_completion_function (const char *text, int state) -{ - return fn_filename_completion_function(text, state); -} - -void -rl_forced_update_display(void) -{ - el_set(e, EL_REFRESH); -} - -int -_rl_abort_internal(void) -{ - el_beep(e); - longjmp(topbuf, 1); - /*NOTREACHED*/ -} - -int -_rl_qsort_string_compare(char **s1, char **s2) -{ - return strcoll(*s1, *s2); -} - -HISTORY_STATE * -history_get_history_state(void) -{ - HISTORY_STATE *hs; - - if ((hs = el_malloc(sizeof(*hs))) == NULL) - return NULL; - hs->length = history_length; - return hs; -} - -int -/*ARGSUSED*/ -rl_kill_text(int from __attribute__((__unused__)), - int to __attribute__((__unused__))) -{ - return 0; -} - -Keymap -rl_make_bare_keymap(void) -{ - return NULL; -} - -Keymap -rl_get_keymap(void) -{ - return NULL; -} - -void -/*ARGSUSED*/ -rl_set_keymap(Keymap k __attribute__((__unused__))) -{ -} - -int -/*ARGSUSED*/ -rl_generic_bind(int type __attribute__((__unused__)), - const char * keyseq __attribute__((__unused__)), - const char * data __attribute__((__unused__)), - Keymap k __attribute__((__unused__))) -{ - return 0; -} - -int -/*ARGSUSED*/ -rl_bind_key_in_map(int key __attribute__((__unused__)), - rl_command_func_t *fun __attribute__((__unused__)), - Keymap k __attribute__((__unused__))) -{ - return 0; -} - -/* unsupported, but needed by python */ -void -rl_cleanup_after_signal(void) -{ -} - -int -rl_on_new_line(void) -{ - return 0; -} - -void -rl_free_line_state(void) -{ -} - -int -/*ARGSUSED*/ -rl_set_keyboard_input_timeout(int u __attribute__((__unused__))) -{ - return 0; -} |