--- /dev/null
+/* $NetBSD: readline.c,v 1.89 2010/04/15 00:57:33 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.
+ *
+ * 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 1.89 2010/04/15 00:57:33 christos Exp $");
+#endif /* not lint && not SCCSID */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#include <dirent.h>
+#include <string.h>
+#include <pwd.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <limits.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <setjmp.h>
+#include <vis.h>
+#include "editline/readline.h"
+#include "el.h"
+#include "fcns.h" /* for EL_NUM_FCNS */
+#include "histedit.h"
+#include "filecomplete.h"
+
+#if !defined(SIZE_T_MAX)
+# define SIZE_T_MAX (size_t)(-1)
+#endif
+
+void rl_prep_terminal(int);
+void rl_deprep_terminal(void);
+
+/* for rl_complete() */
+#define TAB '\r'
+
+/* see comment at the #ifdef for sense of this */
+/* #define GDB_411_HACK */
+
+/* readline compatibility stuff - look at readline sources/documentation */
+/* to see what these variables mean */
+const char *rl_library_version = "EditLine wrapper";
+int rl_readline_version = RL_READLINE_VERSION;
+static char empty[] = { '\0' };
+static char expand_chars[] = { ' ', '\t', '\n', '=', '(', '\0' };
+static char break_chars[] = { ' ', '\t', '\n', '"', '\\', '\'', '`', '@', '$',
+ '>', '<', '=', ';', '|', '&', '{', '(', '\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;
+VCPFunction *rl_linefunc = NULL;
+int rl_done = 0;
+VFunction *rl_event_hook = NULL;
+KEYMAP_ENTRY_ARRAY emacs_standard_keymap,
+ emacs_meta_keymap,
+ emacs_ctlx_keymap;
+
+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;
+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 rl_catch_signals = 1;
+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;
+
+#ifdef WIDECHAR
+static ct_buffer_t conv;
+#endif
+
+/*
+ * 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 TYPE(History) *h = NULL;
+static EditLine *e = NULL;
+static Function *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 *, char *);
+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_event_read_char(EditLine *, char *);
+static void _rl_update_pos(void);
+
+
+/* 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)
+{
+ TYPE(HistEvent) ev;
+ static HIST_ENTRY rl_he;
+
+ if (FUNW(history)(h, &ev, op) != 0)
+ return (HIST_ENTRY *) NULL;
+
+ rl_he.line = ct_encode_string(ev.str, &conv);
+ rl_he.data = NULL;
+
+ return (&rl_he);
+}
+
+
+/*
+ * read one key from user defined input function
+ */
+static int
+/*ARGSUSED*/
+_getc_function(EditLine *el __attribute__((__unused__)), char *c)
+{
+ int i;
+
+ i = (*rl_getc_function)(NULL);
+ if (i == -1)
+ return 0;
+ *c = i;
+ return 1;
+}
+
+static const char _dothistory[] = "/.history";
+
+static const char *
+_default_history_file(void)
+{
+ struct passwd *p;
+ static char path[PATH_MAX];
+
+ if (*path)
+ return path;
+ if ((p = getpwuid(getuid())) == NULL)
+ return NULL;
+ strlcpy(path, p->pw_dir, PATH_MAX);
+ strlcat(path, _dothistory, PATH_MAX);
+ 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)
+ 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)
+{
+ TYPE(HistEvent) ev;
+ const LineInfo *li;
+ int editmode = 1;
+ struct termios t;
+
+ if (e != NULL)
+ el_end(e);
+ if (h != NULL)
+ FUN(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)
+ FUN(el,set)(e, EL_EDITMODE, 0);
+
+ h = FUN(history,init)();
+ if (!e || !h)
+ return (-1);
+
+ FUNW(history)(h, &ev, H_SETSIZE, INT_MAX); /* unlimited */
+ history_length = 0;
+ max_input_history = INT_MAX;
+ el_set(e, EL_HIST, history, h);
+
+ /* 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) {
+ FUN(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 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);
+
+ /* 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_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)
+{
+ TYPE(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;
+
+ FUNW(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;
+ TYPE(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 (FUNW(history)(h, &ev, H_FIRST) != 0)
+ return(NULL);
+ *cindex = cmd[idx]? (idx + 1):idx;
+ return ct_encode_string(ev.str, &conv);
+ }
+ 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 (FUNW(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 */
+ FUNW(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 (FUNW(history)(h, &ev, H_CURR) != 0)
+ return(NULL);
+ *cindex = idx;
+ rptr = ct_encode_string(ev.str, &conv);
+
+ /* roll back to original position */
+ (void)FUNW(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 "!!:$" respectively.
+ */
+ str[0] = str[1] = '!';
+ str[2] = '0';
+ ptr = get_history_event(str, &idx, 0);
+ idx = (command[offs + 1] == ':')? 1:0;
+ has_mods = 1;
+ } else {
+ if (command[offs + 1] == '#') {
+ /* use command so far */
+ if ((aptr = malloc(offs + 1)) == NULL)
+ return -1;
+ (void)strncpy(aptr, command, offs);
+ aptr[offs] = '\0';
+ idx = 1;
+ } else {
+ int qchar;
+
+ qchar = (offs > 0 && command[offs - 1] == '"')? '"':0;
+ ptr = get_history_event(command + offs, &idx, qchar);
+ }
+ has_mods = command[offs + idx] == ':';
+ }
+
+ if (ptr == NULL && aptr == NULL)
+ return(-1);
+
+ if (!has_mods) {
+ *result = strdup(aptr ? aptr : ptr);
+ if (aptr)
+ free(aptr);
+ if (*result == NULL)
+ return -1;
+ return(1);
+ }
+
+ cmd = command + offs + idx + 1;
+
+ /* Now parse any word designators */
+
+ if (*cmd == '%') /* last word matched by ?pat? */
+ tmp = strdup(last_search_match? last_search_match:"");
+ else if (strchr("^*$-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)
+ free(aptr);
+ return(-1);
+ }
+ } else
+ tmp = strdup(aptr? aptr:ptr);
+
+ if (aptr)
+ 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);
+ 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);
+ free(tmp);
+ 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);
+ free(tmp);
+ 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) {
+ free(tmp);
+ return 0;
+ }
+ } else {
+ from = NULL;
+ free(tmp);
+ return (-1);
+ }
+ }
+ cmd++; /* shift after delim */
+ if (!*cmd)
+ continue;
+
+ size = 16;
+ with = realloc(to, size);
+ if (with == NULL) {
+ free(to);
+ 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 = realloc(with, size);
+ if (nwith == NULL) {
+ free(with);
+ 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) {
+ 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, fr) \
+ { \
+ if (idx + len + 1 > size) { \
+ char *nresult = realloc(result, (size += len + 1));\
+ if (nresult == NULL) { \
+ free(*output); \
+ if (/*CONSTCOND*/fr) \
+ 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) {
+ (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;
+ 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) {
+ 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
+ }
+ 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 = start, len = 0; i <= (size_t)end; i++)
+ len += strlen(arr[i]) + 1;
+ len++;
+ result = malloc(len);
+ if (result == NULL)
+ goto out;
+
+ for (i = 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++)
+ 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)
+{
+ TYPE(HistEvent) ev;
+
+ if (h == NULL || e == NULL)
+ rl_initialize();
+
+ if (FUNW(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)
+{
+ TYPE(HistEvent) ev;
+ int omax;
+
+ FUNW(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), 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 = fread(buf, 1, sizeof(buf), fp);
+ if (ferror(fp)) {
+ ret = errno;
+ break;
+ }
+ if (left == 0) {
+ count--;
+ left = sizeof(buf);
+ } else if (fwrite(buf, (size_t)left, 1, tp) != 1) {
+ ret = errno;
+ break;
+ }
+ fflush(tp);
+ break;
+ }
+ if (fwrite(buf, sizeof(buf), 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), 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, 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 = fread(buf, 1, sizeof(buf), tp)) == 0) {
+ if (ferror(fp))
+ ret = errno;
+ break;
+ }
+ if (fwrite(buf, (size_t)left, 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)
+{
+ TYPE(HistEvent) ev;
+
+ if (h == NULL || e == NULL)
+ rl_initialize();
+ if (filename == NULL && (filename = _default_history_file()) == NULL)
+ return errno;
+ return (FUNW(history)(h, &ev, H_LOAD, filename) == -1 ?
+ (errno ? errno : EINVAL) : 0);
+}
+
+
+/*
+ * write history to a file given
+ */
+int
+write_history(const char *filename)
+{
+ TYPE(HistEvent) ev;
+
+ if (h == NULL || e == NULL)
+ rl_initialize();
+ if (filename == NULL && (filename = _default_history_file()) == NULL)
+ return errno;
+ return (FUNW(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;
+ TYPE(HistEvent) ev;
+ int curr_num;
+
+ if (h == NULL || e == NULL)
+ rl_initialize();
+
+ /* save current position */
+ if (FUNW(history)(h, &ev, H_CURR) != 0)
+ return (NULL);
+ curr_num = ev.num;
+
+ /* start from the oldest */
+ if (FUNW(history)(h, &ev, H_LAST) != 0)
+ return (NULL); /* error */
+
+ /* look forwards for event matching specified offset */
+ if (FUNW(history)(h, &ev, H_NEXT_EVDATA, num, &she.data))
+ return (NULL);
+
+ she.line = ct_encode_string(ev.str, &conv);
+
+ /* restore pointer to where it was */
+ (void)FUNW(history)(h, &ev, H_SET, curr_num);
+
+ return (&she);
+}
+
+
+/*
+ * add the line to history table
+ */
+int
+add_history(const char *line)
+{
+ TYPE(HistEvent) ev;
+ const Char *wline;
+
+ if (h == NULL || e == NULL)
+ rl_initialize();
+
+ wline = ct_decode_string(line, &conv);
+
+ (void)FUNW(history)(h, &ev, H_ENTER, wline);
+ if (FUNW(history)(h, &ev, H_GETSIZE) == 0)
+ history_length = ev.num;
+
+ return (!(history_length > 0)); /* return 0 if all is okay */
+}
+
+
+/*
+ * remove the specified entry from the history list and return it.
+ */
+HIST_ENTRY *
+remove_history(int num)
+{
+ HIST_ENTRY *he;
+ TYPE(HistEvent) ev;
+
+ if (h == NULL || e == NULL)
+ rl_initialize();
+
+ if ((he = malloc(sizeof(*he))) == NULL)
+ return NULL;
+
+ if (FUNW(history)(h, &ev, H_DELDATA, num, &he->data) != 0) {
+ free(he);
+ return NULL;
+ }
+
+ he->line = ct_encode_string(ev.str, &conv);
+ if (FUNW(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;
+ TYPE(HistEvent) ev;
+ int curr_num;
+
+ if (h == NULL || e == NULL)
+ rl_initialize();
+
+ /* save current position */
+ if (FUNW(history)(h, &ev, H_CURR) != 0)
+ return NULL;
+ curr_num = ev.num;
+
+ /* start from the oldest */
+ if (FUNW(history)(h, &ev, H_LAST) != 0)
+ return NULL; /* error */
+
+ if ((he = malloc(sizeof(*he))) == NULL)
+ return NULL;
+
+ /* look forwards for event matching specified offset */
+ if (FUNW(history)(h, &ev, H_NEXT_EVDATA, num, &he->data))
+ goto out;
+
+ he->line = strdup(ct_encode_string(ev.str, &e->el_scratch));
+ if (he->line == NULL)
+ goto out;
+
+ if (FUNW(history)(h, &ev, H_REPLACE, line, data))
+ goto out;
+
+ /* restore pointer to where it was */
+ if (FUNW(history)(h, &ev, H_SET, curr_num))
+ goto out;
+
+ return he;
+out:
+ free(he);
+ return NULL;
+}
+
+/*
+ * clear the history list - delete all entries
+ */
+void
+clear_history(void)
+{
+ TYPE(HistEvent) ev;
+
+ (void)FUNW(history)(h, &ev, H_CLEAR);
+ history_length = 0;
+}
+
+
+/*
+ * returns offset of the current history event
+ */
+int
+where_history(void)
+{
+ TYPE(HistEvent) ev;
+ int curr_num, off;
+
+ if (FUNW(history)(h, &ev, H_CURR) != 0)
+ return (0);
+ curr_num = ev.num;
+
+ (void)FUNW(history)(h, &ev, H_FIRST);
+ off = 1;
+ while (ev.num != curr_num && FUNW(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)
+{
+ TYPE(HistEvent) ev;
+ int curr_num;
+ size_t size;
+
+ if (FUNW(history)(h, &ev, H_CURR) != 0)
+ return (-1);
+ curr_num = ev.num;
+
+ (void)FUNW(history)(h, &ev, H_FIRST);
+ size = 0;
+ do
+ size += Strlen(ev.str) * sizeof(*ev.str);
+ while (FUNW(history)(h, &ev, H_NEXT) == 0);
+
+ /* get to the same position as before */
+ FUNW(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)
+{
+ TYPE(HistEvent) ev;
+ int curr_num;
+
+ if (pos >= history_length || pos < 0)
+ return (-1);
+
+ (void)FUNW(history)(h, &ev, H_CURR);
+ curr_num = ev.num;
+
+ /*
+ * use H_DELDATA to set to nth history (without delete) by passing
+ * (void **)-1
+ */
+ if (FUNW(history)(h, &ev, H_DELDATA, pos, (void **)-1)) {
+ (void)FUNW(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)
+{
+ TYPE(HistEvent) ev;
+ const Char *strp;
+ const Char *wstr;
+ int curr_num;
+
+ if (FUNW(history)(h, &ev, H_CURR) != 0)
+ return (-1);
+ curr_num = ev.num;
+
+ wstr = ct_decode_string(str, &conv);
+ for (;;) {
+ if ((strp = Strstr(ev.str, wstr)) != NULL)
+ return (int) (strp - ev.str);
+ if (FUNW(history)(h, &ev, direction < 0 ? H_NEXT:H_PREV) != 0)
+ break;
+ }
+ (void)FUNW(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)
+{
+ TYPE(HistEvent) ev;
+
+ return (FUNW(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)
+{
+ TYPE(HistEvent) ev;
+ int curr_num, off;
+ const Char *wstr;
+
+ off = (pos > 0) ? pos : -pos;
+ pos = (pos > 0) ? 1 : -1;
+
+ if (FUNW(history)(h, &ev, H_CURR) != 0)
+ return (-1);
+ curr_num = ev.num;
+
+ if (history_set_pos(off) != 0 || FUNW(history)(h, &ev, H_CURR) != 0)
+ return (-1);
+
+ wstr = ct_decode_string(str, &conv);
+ for (;;) {
+ if (Strstr(ev.str, wstr))
+ return (off);
+ if (FUNW(history)(h, &ev, (pos < 0) ? H_PREV : H_NEXT) != 0)
+ break;
+ }
+
+ /* set "current" pointer back to previous state */
+ (void)FUNW(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 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())
+ && pwd != NULL && 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 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;
+}
+
+/*
+ * 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);
+}
+
+static const char *
+/*ARGSUSED*/
+_rl_completion_append_character_function(const char *dummy
+ __attribute__((__unused__)))
+{
+ static char buf[2];
+ buf[0] = rl_completion_append_character;
+ buf[1] = '\0';
+ return buf;
+}
+
+
+/*
+ * complete word at current point
+ */
+/* ARGSUSED */
+int
+rl_complete(int ignore __attribute__((__unused__)), int invoking_key)
+{
+#ifdef WIDECHAR
+ static ct_buffer_t wbreak_conv, sprefix_conv;
+#endif
+
+ 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);
+ }
+
+ /* Just look at how many global variables modify this operation! */
+ return fn_complete(e,
+ (CPFunction *)rl_completion_entry_function,
+ rl_attempted_completion_function,
+ ct_decode_string(rl_basic_word_break_characters, &wbreak_conv),
+ ct_decode_string(rl_special_prefixes, &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] = 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])(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 ((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);
+ 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] == 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, VCPFunction *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] = 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] = 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) == -1) ? 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;
+ ssize_t 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 (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);
+ if (cols)
+ el_get(e, EL_GETTC, "co", cols);
+}
+
+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);
+ (void)snprintf(buf, sizeof(buf), "%d", cols);
+ el_set(e, EL_SETTC, "co", buf);
+}
+
+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 = 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 = 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_T_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] = malloc(min + 1)) == NULL)
+ goto out;
+ (void)memcpy(list[0], list[1], min);
+ list[0][min] = '\0';
+ }
+ return list;
+
+out:
+ 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 = malloc(sizeof(HISTORY_STATE))) == 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)
+{
+}
projects / deliverable / titan.core.git / blobdiff