diff options
Diffstat (limited to 'net/tnftp/files/libedit/readline.c')
| -rw-r--r-- | net/tnftp/files/libedit/readline.c | 2143 |
1 files changed, 2143 insertions, 0 deletions
diff --git a/net/tnftp/files/libedit/readline.c b/net/tnftp/files/libedit/readline.c new file mode 100644 index 00000000000..3cb57b5ee1e --- /dev/null +++ b/net/tnftp/files/libedit/readline.c @@ -0,0 +1,2143 @@ +/* NetBSD: readline.c,v 1.2 2005/05/11 01:17:39 lukem Exp */ +/* from NetBSD: readline.c,v 1.47 2004/09/08 18:15:57 christos 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. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the NetBSD + * Foundation, Inc. and its contributors. + * 4. Neither the name of The NetBSD Foundation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * 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 1.2 2005/05/11 01:17:39 lukem Exp"); +#endif /* not lint && not SCCSID */ + +#include <sys/types.h> +#include <sys/stat.h> +#include <stdio.h> +#include <dirent.h> +#include <string.h> +#include <pwd.h> +#include <ctype.h> +#include <stdlib.h> +#include <unistd.h> +#include <limits.h> +#include <errno.h> +#include <fcntl.h> +#ifdef HAVE_VIS_H +#include <vis.h> +#else +#include "np/vis.h" +#endif +#ifdef HAVE_ALLOCA_H +#include <alloca.h> +#endif +#include "el.h" +#include "fcns.h" /* for EL_NUM_FCNS */ +#include "histedit.h" +#include "readline/readline.h" + +/* 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"; +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; +VFunction *rl_linefunc = NULL; +int rl_done = 0; +VFunction *rl_event_hook = NULL; + +int history_base = 1; /* probably never subject to change */ +int history_length = 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; +Function *rl_completion_entry_function = NULL; +CPPFunction *rl_attempted_completion_function = NULL; +Function *rl_pre_input_hook = NULL; +Function *rl_startup1_hook = NULL; +Function *rl_getc_function = NULL; +char *rl_terminal_name = NULL; +int rl_already_prompted = 0; +int rl_filename_completion_desired = 0; +int rl_ignore_completion_duplicates = 0; +int rl_catch_signals = 1; +VFunction *rl_redisplay_function = NULL; +Function *rl_startup_hook = NULL; +VFunction *rl_completion_display_matches_hook = NULL; +VFunction *rl_prep_term_function = NULL; +VFunction *rl_deprep_term_function = NULL; + +/* + * 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 = (char *)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 */ + +/* if not zero, non-unique completions always show list of possible matches */ +static int _rl_complete_show_all = 0; + +static History *h = NULL; +static EditLine *e = NULL; +static Function *map[256]; +static int el_rl_complete_cmdnum = 0; + +/* internal functions */ +static unsigned char _el_rl_complete(EditLine *, int); +static unsigned char _el_rl_tstp(EditLine *, int); +static char *_get_prompt(EditLine *); +static HIST_ENTRY *_move_history(int); +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_complete_internal(int); +static int _rl_qsort_string_compare(const void *, const void *); +static int _rl_event_read_char(EditLine *, char *); + + +/* ARGSUSED */ +static char * +_get_prompt(EditLine *el __attribute__((__unused__))) +{ + rl_already_prompted = 1; + return (rl_prompt); +} + + +/* + * generic function for moving around history + */ +static HIST_ENTRY * +_move_history(int op) +{ + HistEvent ev; + static HIST_ENTRY rl_he; + + if (history(h, &ev, op) != 0) + return (HIST_ENTRY *) NULL; + + rl_he.line = ev.str; + rl_he.data = NULL; + + return (&rl_he); +} + + +/* + * READLINE compatibility stuff + */ + +/* + * initialize rl compat stuff + */ +int +rl_initialize(void) +{ + HistEvent ev; + const LineInfo *li; + int i; + 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); + + /* for proper prompt printing in readline() */ + rl_prompt = strdup(""); + if (rl_prompt == NULL) { + history_end(h); + el_end(e); + return -1; + } + el_set(e, EL_PROMPT, _get_prompt); + el_set(e, EL_SIGNAL, rl_catch_signals); + + /* set default mode to "emacs"-style and read setting afterwards */ + /* so this can be overriden */ + 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); + + /* + * Find out where the rl_complete function was added; this is + * used later to detect that lastcmd was also rl_complete. + */ + for(i=EL_NUM_FCNS; i < e->el_map.nfunc; i++) { + if (e->el_map.func[i] == _el_rl_complete) { + el_rl_complete_cmdnum = i; + break; + } + } + + /* read settings from configuration file */ + el_source(e, NULL); + + /* + * Unfortunately, some applications really do use rl_point + * and rl_line_buffer directly. + */ + li = el_line(e); + /* a cheesy way to get rid of const cast. */ + rl_line_buffer = memchr(li->buffer, *li->buffer, 1); + rl_point = rl_end = 0; + + 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 *prompt) +{ + HistEvent ev; + int count; + const char *ret; + char *buf; + static int used_event_hook; + + if (e == NULL || h == NULL) + rl_initialize(); + + rl_done = 0; + + /* update prompt accordingly to what has been passed */ + if (!prompt) + prompt = ""; + if (strcmp(rl_prompt, prompt) != 0) { + free(rl_prompt); + rl_prompt = strdup(prompt); + if (rl_prompt == NULL) + 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(); +} + + +/* + * 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 = malloc(len + 1); + 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 *rl_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 + 1; + + if (!(rl_he = history_get(num))) + return(NULL); + + *cindex = idx; + return(rl_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 = idx - 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 = malloc(len + 1)) == NULL) + return NULL; + (void)strncpy(pat, cmd + begin, len); + pat[len] = '\0'; + } + + if (history(h, &ev, H_CURR) != 0) { + if (pat != last_search_pat) + free(pat); + return (NULL); + } + num = ev.num; + + if (sub) { + if (pat != last_search_pat) { + if (last_search_pat) + 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) + free(pat); + return(NULL); + } + + if (sub && len) { + if (last_search_match && last_search_match != pat) + free(last_search_match); + last_search_match = pat; + } + + if (pat != last_search_pat) + 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 callers responsibility to free() 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 = malloc(offs + 1)) == 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 + idx] == ':'; + } + + if (ptr == NULL && aptr == NULL) + return(-1); + + if (!has_mods) { + *result = strdup(aptr? aptr : ptr); + if (aptr) + free(aptr); + 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) + free(aptr); + return(-1); + } + } else + tmp = strdup(aptr? aptr:ptr); + + if (aptr) + free(aptr); + + if (*cmd == 0 || (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); + 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); + 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 = realloc(from, size); + if (what == NULL) { + free(from); + return 0; + } + len = 0; + for (; *cmd && *cmd != delim; cmd++) { + if (*cmd == '\\' && cmd[1] == delim) + cmd++; + if (len >= size) { + char *nwhat; + nwhat = realloc(what, + (size <<= 1)); + if (nwhat == NULL) { + free(what); + return 0; + } + what = nwhat; + } + what[len++] = *cmd; + } + what[len] = '\0'; + from = what; + if (*what == '\0') { + free(what); + if (search) { + from = strdup(search); + if (from == NULL) + return 0; + } else { + from = NULL; + return (-1); + } + } + cmd++; /* shift after delim */ + if (!*cmd) + continue; + + size = 16; + with = realloc(to, size); + if (with == NULL) { + free(to); + 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 = realloc(with, size); + if (nwith == NULL) { + free(with); + 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) { + 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 = malloc(strlen(str) + 4 + 1); + 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) \ + { \ + if (idx + len + 1 > size) { \ + char *nresult = realloc(result, (size += len + 1));\ + if (nresult == NULL) { \ + free(*output); \ + return 0; \ + } \ + result = nresult; \ + } \ + (void)strncpy(&result[idx], what, len); \ + idx += len; \ + result[idx] = '\0'; \ + } + + result = NULL; + size = idx = 0; + 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) { + (void)strcpy(&str[j], &str[j + 1]); + 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; + tmp = &str[start]; + ADD_STRING(tmp, len); + + if (str[i] == '\0' || str[i] != history_expansion_char) { + len = j - i; + tmp = &str[i]; + ADD_STRING(tmp, len); + 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); + free(tmp); + } + 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 + } + 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; + + arr = history_tokenize(str); + if (!arr) + return(NULL); + if (arr && *arr == NULL) { + free(arr); + return(NULL); + } + + for (max = 0; arr[max]; max++) + continue; + max--; + + if (start == '$') + start = max; + if (end == '$') + end = max; + if (end < 0) + end = max + end + 1; + if (start < 0) + start = end; + + if (start < 0 || end < 0 || start > max || end > max || start > end) + return(NULL); + + for (i = start, len = 0; i <= end; i++) + len += strlen(arr[i]) + 1; + len++; + result = malloc(len); + if (result == NULL) + return NULL; + + for (i = start, len = 0; i <= end; i++) { + (void)strcpy(result + len, arr[i]); + len += strlen(arr[i]); + if (i < end) + result[len++] = ' '; + } + result[len] = 0; + + for (i = 0; arr[i]; i++) + free(arr[i]); + free(arr); + + return(result); +} + +/* + * Parse the string into individual tokens, + * similar to how shell would do it. + */ +char ** +history_tokenize(const char *str) +{ + int size = 1, idx = 0, i, start; + size_t len; + char **result = NULL, *temp, delim = '\0'; + + for (i = 0; str[i];) { + while (isspace((unsigned char) str[i])) + i++; + start = i; + for (; str[i];) { + if (str[i] == '\\') { + if (str[i+1] != '\0') + i++; + } else if (str[i] == delim) + delim = '\0'; + else if (!delim && + (isspace((unsigned char) str[i]) || + strchr("()<>;&|$", 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 = realloc(result, size * sizeof(char *)); + if (nresult == NULL) { + free(result); + return NULL; + } + result = nresult; + } + len = i - start; + temp = malloc(len + 1); + if (temp == NULL) { + for (i = 0; i < idx; i++) + free(result[i]); + 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; + + if (h == NULL || e == NULL) + rl_initialize(); + + if (history(h, &ev, H_SETSIZE, max) == 0) + max_input_history = max; +} + + +/* + * "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); +} + + +/* + * read history from a file given + */ +int +read_history(const char *filename) +{ + HistEvent ev; + + if (h == NULL || e == NULL) + rl_initialize(); + return (history(h, &ev, H_LOAD, filename)); +} + + +/* + * write history to a file given + */ +int +write_history(const char *filename) +{ + HistEvent ev; + + if (h == NULL || e == NULL) + rl_initialize(); + return (history(h, &ev, H_SAVE, filename)); +} + + +/* + * 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(); + + /* save current position */ + if (history(h, &ev, H_CURR) != 0) + return (NULL); + curr_num = ev.num; + + /* start from most recent */ + if (history(h, &ev, H_FIRST) != 0) + return (NULL); /* error */ + + /* look backwards for event matching specified offset */ + if (history(h, &ev, H_NEXT_EVENT, num)) + return (NULL); + + she.line = ev.str; + she.data = NULL; + + /* restore pointer to where it was */ + (void)history(h, &ev, H_SET, curr_num); + + return (&she); +} + + +/* + * add the line to history table + */ +int +add_history(const char *line) +{ + HistEvent ev; + + if (h == NULL || e == NULL) + rl_initialize(); + + (void)history(h, &ev, H_ENTER, line); + if (history(h, &ev, H_GETSIZE) == 0) + history_length = ev.num; + + return (!(history_length > 0)); /* return 0 if all is okay */ +} + + +/* + * clear the history list - delete all entries + */ +void +clear_history(void) +{ + HistEvent ev; + + history(h, &ev, H_CLEAR); +} + + +/* + * returns offset of the current history event + */ +int +where_history(void) +{ + HistEvent ev; + int curr_num, off; + + if (history(h, &ev, H_CURR) != 0) + return (0); + curr_num = ev.num; + + history(h, &ev, H_FIRST); + off = 1; + while (ev.num != curr_num && history(h, &ev, H_NEXT) == 0) + off++; + + return (off); +} + + +/* + * returns current history event or NULL if there is no such event + */ +HIST_ENTRY * +current_history(void) +{ + + return (_move_history(H_CURR)); +} + + +/* + * returns total number of bytes history events' data are using + */ +int +history_total_bytes(void) +{ + HistEvent ev; + int curr_num, size; + + if (history(h, &ev, H_CURR) != 0) + return (-1); + curr_num = ev.num; + + history(h, &ev, H_FIRST); + size = 0; + do + size += strlen(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 (size); +} + + +/* + * sets the position in the history list to ``pos'' + */ +int +history_set_pos(int pos) +{ + HistEvent ev; + int curr_num; + + if (pos > history_length || pos < 0) + return (-1); + + history(h, &ev, H_CURR); + curr_num = ev.num; + + if (history(h, &ev, H_SET, pos)) { + history(h, &ev, H_SET, curr_num); + return(-1); + } + return (0); +} + + +/* + * returns previous event in history and shifts pointer accordingly + */ +HIST_ENTRY * +previous_history(void) +{ + + return (_move_history(H_PREV)); +} + + +/* + * returns next event in history and shifts pointer accordingly + */ +HIST_ENTRY * +next_history(void) +{ + + return (_move_history(H_NEXT)); +} + + +/* + * 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; + } + 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) != 0 || 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 */ + history(h, &ev, (pos < 0) ? H_NEXT_EVENT : H_PREV_EVENT, curr_num); + + return (-1); +} + + +/********************************/ +/* completion functions */ + +/* + * does tilde expansion of strings of type ``~user/foo'' + * if ``user'' isn't valid user name or ``txt'' doesn't start + * w/ '~', returns pointer to strdup()ed copy of ``txt'' + * + * it's callers's responsibility to free() returned string + */ +char * +tilde_expand(char *txt) +{ + struct passwd *pass; + char *temp; + size_t len = 0; + + if (txt[0] != '~') + return (strdup(txt)); + + temp = strchr(txt + 1, '/'); + if (temp == NULL) { + temp = strdup(txt + 1); + if (temp == NULL) + return NULL; + } else { + len = temp - txt + 1; /* text until string after slash */ + temp = malloc(len); + if (temp == NULL) + return NULL; + (void)strncpy(temp, txt + 1, len - 2); + temp[len - 2] = '\0'; + } + pass = getpwnam(temp); + free(temp); /* value no more needed */ + if (pass == NULL) + return (strdup(txt)); + + /* update pointer txt to point at string immedially following */ + /* first slash */ + txt += len; + + temp = malloc(strlen(pass->pw_dir) + 1 + strlen(txt) + 1); + if (temp == NULL) + return NULL; + (void)sprintf(temp, "%s/%s", pass->pw_dir, txt); + + return (temp); +} + + +/* + * return first found file name starting by the ``text'' or NULL if no + * such file can be found + * value of ``state'' is ignored + * + * it's caller's responsibility to free returned string + */ +char * +filename_completion_function(const char *text, int state) +{ + static DIR *dir = NULL; + static char *filename = NULL, *dirname = NULL; + static size_t filename_len = 0; + struct dirent *entry; + char *temp; + size_t len; + + if (state == 0 || dir == NULL) { + temp = strrchr(text, '/'); + if (temp) { + char *nptr; + temp++; + nptr = realloc(filename, strlen(temp) + 1); + if (nptr == NULL) { + free(filename); + return NULL; + } + filename = nptr; + (void)strcpy(filename, temp); + len = temp - text; /* including last slash */ + nptr = realloc(dirname, len + 1); + if (nptr == NULL) { + free(filename); + return NULL; + } + dirname = nptr; + (void)strncpy(dirname, text, len); + dirname[len] = '\0'; + } else { + if (*text == 0) + filename = NULL; + else { + filename = strdup(text); + if (filename == NULL) + return NULL; + } + dirname = NULL; + } + + /* support for ``~user'' syntax */ + if (dirname && *dirname == '~') { + char *nptr; + temp = tilde_expand(dirname); + if (temp == NULL) + return NULL; + nptr = realloc(dirname, strlen(temp) + 1); + if (nptr == NULL) { + free(dirname); + return NULL; + } + dirname = nptr; + (void)strcpy(dirname, temp); /* safe */ + free(temp); /* no longer needed */ + } + /* will be used in cycle */ + filename_len = filename ? strlen(filename) : 0; + + if (dir != NULL) { + (void)closedir(dir); + dir = NULL; + } + dir = opendir(dirname ? dirname : "."); + if (!dir) + return (NULL); /* cannot open the directory */ + } + /* find the match */ + while ((entry = readdir(dir)) != NULL) { + /* skip . and .. */ + if (entry->d_name[0] == '.' && (!entry->d_name[1] + || (entry->d_name[1] == '.' && !entry->d_name[2]))) + continue; + if (filename_len == 0) + break; + /* otherwise, get first entry where first */ + /* filename_len characters are equal */ + if (entry->d_name[0] == filename[0] +#if defined(__SVR4) || defined(__linux__) + && strlen(entry->d_name) >= filename_len +#else + && entry->d_namlen >= filename_len +#endif + && strncmp(entry->d_name, filename, + filename_len) == 0) + break; + } + + if (entry) { /* match found */ + + struct stat stbuf; +#if defined(__SVR4) || defined(__linux__) + len = strlen(entry->d_name) + +#else + len = entry->d_namlen + +#endif + ((dirname) ? strlen(dirname) : 0) + 1 + 1; + temp = malloc(len); + if (temp == NULL) + return NULL; + (void)sprintf(temp, "%s%s", + dirname ? dirname : "", entry->d_name); /* safe */ + + /* test, if it's directory */ + if (stat(temp, &stbuf) == 0 && S_ISDIR(stbuf.st_mode)) + strcat(temp, "/"); /* safe */ + } else { + (void)closedir(dir); + dir = NULL; + temp = NULL; + } + + return (temp); +} + + +/* + * a completion generator for usernames; returns _first_ username + * which starts with supplied text + * text contains a partial username preceded by random character + * (usually '~'); state is ignored + * it's callers responsibility to free returned value + */ +char * +username_completion_function(const char *text, int state) +{ + struct passwd *pwd; + + if (text[0] == '\0') + return (NULL); + + if (*text == '~') + text++; + + if (state == 0) + setpwent(); + + while ((pwd = getpwent()) && text[0] == pwd->pw_name[0] + && strcmp(text, pwd->pw_name) == 0); + + if (pwd == NULL) { + endpwent(); + return (NULL); + } + return (strdup(pwd->pw_name)); +} + + +/* + * el-compatible wrapper around rl_complete; needed for key binding + */ +/* ARGSUSED */ +static unsigned char +_el_rl_complete(EditLine *el __attribute__((__unused__)), int ch) +{ + return (unsigned char) rl_complete(0, ch); +} + +/* + * 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; +} + +/* + * returns list of completions for text given + */ +char ** +completion_matches(const char *text, CPFunction *genfunc) +{ + char **match_list = NULL, *retstr, *prevstr; + size_t match_list_len, max_equal, which, i; + size_t matches; + + if (h == NULL || e == NULL) + rl_initialize(); + + matches = 0; + match_list_len = 1; + while ((retstr = (*genfunc) (text, (int)matches)) != NULL) { + /* allow for list terminator here */ + if (matches + 3 >= match_list_len) { + char **nmatch_list; + while (matches + 3 >= match_list_len) + match_list_len <<= 1; + nmatch_list = realloc(match_list, + match_list_len * sizeof(char *)); + if (nmatch_list == NULL) { + free(match_list); + return NULL; + } + match_list = nmatch_list; + + } + match_list[++matches] = retstr; + } + + if (!match_list) + return NULL; /* nothing found */ + + /* find least denominator and insert it to match_list[0] */ + which = 2; + prevstr = match_list[1]; + max_equal = strlen(prevstr); + for (; which <= matches; which++) { + for (i = 0; i < max_equal && + prevstr[i] == match_list[which][i]; i++) + continue; + max_equal = i; + } + + retstr = malloc(max_equal + 1); + if (retstr == NULL) { + free(match_list); + return NULL; + } + (void)strncpy(retstr, match_list[1], max_equal); + retstr[max_equal] = '\0'; + match_list[0] = retstr; + + /* add NULL as last pointer to the array */ + match_list[matches + 1] = (char *) NULL; + + return (match_list); +} + +/* + * Sort function for qsort(). Just wrapper around strcasecmp(). + */ +static int +_rl_qsort_string_compare(i1, i2) + const void *i1, *i2; +{ + const char *s1 = ((const char * const *)i1)[0]; + const char *s2 = ((const char * const *)i2)[0]; + + return strcasecmp(s1, s2); +} + +/* + * 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 (matches, len, max) + char **matches; + int len, max; +{ + int i, idx, limit, count; + int screenwidth = e->el_term.t_size.h; + + /* + * Find out how many entries can be put on one line, count + * with two spaces between strings. + */ + limit = screenwidth / (max + 2); + if (limit == 0) + limit = 1; + + /* how many lines of output */ + count = len / limit; + if (count * limit < len) + count++; + + /* Sort the items if they are not already sorted. */ + qsort(&matches[1], (size_t)(len - 1), sizeof(char *), + _rl_qsort_string_compare); + + idx = 1; + for(; count > 0; count--) { + for(i = 0; i < limit && matches[idx]; i++, idx++) + (void)fprintf(e->el_outfile, "%-*s ", max, + matches[idx]); + (void)fprintf(e->el_outfile, "\n"); + } +} + +/* + * Complete the word at or before point, called by rl_complete() + * 'what_to_do' says what to do with the completion. + * `?' means list the possible completions. + * TAB means do standard completion. + * `*' means insert all of the possible completions. + * `!' means to do standard completion, and list all possible completions if + * there is more than one. + * + * Note: '*' support is not implemented + */ +static int +rl_complete_internal(int what_to_do) +{ + Function *complet_func; + const LineInfo *li; + char *temp, **matches; + const char *ctemp; + size_t len; + + rl_completion_type = what_to_do; + + if (h == NULL || e == NULL) + rl_initialize(); + + complet_func = rl_completion_entry_function; + if (!complet_func) + complet_func = (Function *)(void *)filename_completion_function; + + /* We now look backwards for the start of a filename/variable word */ + li = el_line(e); + ctemp = (const char *) li->cursor; + while (ctemp > li->buffer + && !strchr(rl_basic_word_break_characters, ctemp[-1]) + && (!rl_special_prefixes + || !strchr(rl_special_prefixes, ctemp[-1]) ) ) + ctemp--; + + len = li->cursor - ctemp; + temp = alloca(len + 1); + (void)strncpy(temp, ctemp, len); + temp[len] = '\0'; + + /* these can be used by function called in completion_matches() */ + /* or (*rl_attempted_completion_function)() */ + rl_point = li->cursor - li->buffer; + rl_end = li->lastchar - li->buffer; + + if (rl_attempted_completion_function) { + int end = li->cursor - li->buffer; + matches = (*rl_attempted_completion_function) (temp, (int) + (end - len), end); + } else + matches = 0; + if (!rl_attempted_completion_function || !matches) + matches = completion_matches(temp, (CPFunction *)complet_func); + + if (matches) { + int i, retval = CC_REFRESH; + int matches_num, maxlen, match_len, match_display=1; + + /* + * Only replace the completed string with common part of + * possible matches if there is possible completion. + */ + if (matches[0][0] != '\0') { + el_deletestr(e, (int) len); + el_insertstr(e, matches[0]); + } + + if (what_to_do == '?') + goto display_matches; + + if (matches[2] == NULL && strcmp(matches[0], matches[1]) == 0) { + /* + * We found exact match. Add a space after + * it, unless we do filename completion and the + * object is a directory. + */ + size_t alen = strlen(matches[0]); + if ((complet_func != + (Function *)filename_completion_function + || (alen > 0 && (matches[0])[alen - 1] != '/')) + && rl_completion_append_character) { + char buf[2]; + buf[0] = rl_completion_append_character; + buf[1] = '\0'; + el_insertstr(e, buf); + } + } else if (what_to_do == '!') { + display_matches: + /* + * More than one match and requested to list possible + * matches. + */ + + for(i=1, maxlen=0; matches[i]; i++) { + match_len = strlen(matches[i]); + if (match_len > maxlen) + maxlen = match_len; + } + matches_num = i - 1; + + /* newline to get on next line from command line */ + (void)fprintf(e->el_outfile, "\n"); + + /* + * If there are too many items, ask user for display + * confirmation. + */ + if (matches_num > rl_completion_query_items) { + (void)fprintf(e->el_outfile, + "Display all %d possibilities? (y or n) ", + matches_num); + (void)fflush(e->el_outfile); + if (getc(stdin) != 'y') + match_display = 0; + (void)fprintf(e->el_outfile, "\n"); + } + + if (match_display) + rl_display_match_list(matches, matches_num, + maxlen); + retval = CC_REDISPLAY; + } else if (matches[0][0]) { + /* + * There was some common match, but the name was + * not complete enough. Next tab will print possible + * completions. + */ + el_beep(e); + } else { + /* lcd is not a valid object - further specification */ + /* is needed */ + el_beep(e); + retval = CC_NORM; + } + + /* free elements of array and the array itself */ + for (i = 0; matches[i]; i++) + free(matches[i]); + free(matches), matches = NULL; + + return (retval); + } + return (CC_NORM); +} + + +/* + * complete word at current point + */ +int +rl_complete(int ignore, int invoking_key) +{ + 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); + } else if (e->el_state.lastcmd == el_rl_complete_cmdnum) + return rl_complete_internal('?'); + else if (_rl_complete_show_all) + return rl_complete_internal('!'); + else + return (rl_complete_internal(TAB)); +} + + +/* + * misc other functions + */ + +/* + * bind key c to readline-type function func + */ +int +rl_bind_key(int c, int func(int, int)) +{ + 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] = c; + arr[1] = '\0'; + + for (; count > 0; count--) + el_push(e, arr); + + return (0); +} + +/*ARGSUSED*/ +int +rl_newline(int count, int c) +{ + /* + * Readline-4.0 appears to ignore the args. + */ + return rl_insert(1, '\n'); +} + +/*ARGSUSED*/ +static unsigned char +rl_bind_wrapper(EditLine *el, unsigned char c) +{ + if (map[c] == NULL) + return CC_ERROR; + (*map[c])(NULL, 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, Function *fun, int c) +{ + char dest[8]; + if (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); + return 0; +} + +void +rl_callback_read_char() +{ + 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] == CTRL('d')) + 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); + } +} + +void +rl_callback_handler_install (const char *prompt, VFunction *linefunc) +{ + if (e == NULL) { + rl_initialize(); + } + if (rl_prompt) + free(rl_prompt); + rl_prompt = prompt ? strdup(strchr(prompt, *prompt)) : NULL; + rl_linefunc = linefunc; + el_set(e, EL_UNBUFFERED, 1); +} + +void +rl_callback_handler_remove(void) +{ + el_set(e, EL_UNBUFFERED, 0); +} + +void +rl_redisplay(void) +{ + char a[2]; + a[0] = CTRL('r'); + a[1] = '\0'; + el_push(e, a); +} + +int +rl_get_previous_history(int count, int key) +{ + char a[2]; + a[0] = key; + a[1] = '\0'; + while (count--) + el_push(e, a); + return 0; +} + +void +/*ARGSUSED*/ +rl_prep_terminal(int meta_flag) +{ + el_set(e, EL_PREP_TERM, 1); +} + +void +rl_deprep_terminal() +{ + 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); +} + +void +rl_stuff_char(int c) +{ + char buf[2]; + + buf[0] = c; + buf[1] = '\0'; + el_insertstr(e, buf); +} + +static int +_rl_event_read_char(EditLine *el, char *cp) +{ + int n, num_read = 0; + + *cp = 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, cp, 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, cp, 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, cp, 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); + return(num_read); +} |