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-rw-r--r--lib/libedit/parse.c291
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diff --git a/lib/libedit/parse.c b/lib/libedit/parse.c
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-/* $NetBSD: parse.c,v 1.35 2016/02/17 19:47:49 christos Exp $ */
-
-/*-
- * Copyright (c) 1992, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Christos Zoulas of Cornell University.
- *
- * 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. Neither the name of the University 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 REGENTS 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 REGENTS 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)
-#if 0
-static char sccsid[] = "@(#)parse.c 8.1 (Berkeley) 6/4/93";
-#else
-__RCSID("$NetBSD: parse.c,v 1.35 2016/02/17 19:47:49 christos Exp $");
-#endif
-#endif /* not lint && not SCCSID */
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-/*
- * parse.c: parse an editline extended command
- *
- * commands are:
- *
- * bind
- * echotc
- * edit
- * gettc
- * history
- * settc
- * setty
- */
-#include <stdlib.h>
-#include <string.h>
-
-#include "el.h"
-#include "parse.h"
-
-private const struct {
- const Char *name;
- int (*func)(EditLine *, int, const Char **);
-} cmds[] = {
- { STR("bind"), map_bind },
- { STR("echotc"), terminal_echotc },
- { STR("edit"), el_editmode },
- { STR("history"), hist_command },
- { STR("telltc"), terminal_telltc },
- { STR("settc"), terminal_settc },
- { STR("setty"), tty_stty },
- { NULL, NULL }
-};
-
-
-/* parse_line():
- * Parse a line and dispatch it
- */
-protected int
-parse_line(EditLine *el, const Char *line)
-{
- const Char **argv;
- int argc;
- TYPE(Tokenizer) *tok;
-
- tok = FUN(tok,init)(NULL);
- FUN(tok,str)(tok, line, &argc, &argv);
- argc = FUN(el,parse)(el, argc, argv);
- FUN(tok,end)(tok);
- return argc;
-}
-
-
-/* el_parse():
- * Command dispatcher
- */
-public int
-FUN(el,parse)(EditLine *el, int argc, const Char *argv[])
-{
- const Char *ptr;
- int i;
-
- if (argc < 1)
- return -1;
- ptr = Strchr(argv[0], ':');
- if (ptr != NULL) {
- Char *tprog;
- size_t l;
-
- if (ptr == argv[0])
- return 0;
- l = (size_t)(ptr - argv[0] - 1);
- tprog = el_malloc((l + 1) * sizeof(*tprog));
- if (tprog == NULL)
- return 0;
- (void) Strncpy(tprog, argv[0], l);
- tprog[l] = '\0';
- ptr++;
- l = (size_t)el_match(el->el_prog, tprog);
- el_free(tprog);
- if (!l)
- return 0;
- } else
- ptr = argv[0];
-
- for (i = 0; cmds[i].name != NULL; i++)
- if (Strcmp(cmds[i].name, ptr) == 0) {
- i = (*cmds[i].func) (el, argc, argv);
- return -i;
- }
- return -1;
-}
-
-
-/* parse__escape():
- * Parse a string of the form ^<char> \<odigit> \<char> \U+xxxx and return
- * the appropriate character or -1 if the escape is not valid
- */
-protected int
-parse__escape(const Char **ptr)
-{
- const Char *p;
- wint_t c;
-
- p = *ptr;
-
- if (p[1] == 0)
- return -1;
-
- if (*p == '\\') {
- p++;
- switch (*p) {
- case 'a':
- c = '\007'; /* Bell */
- break;
- case 'b':
- c = '\010'; /* Backspace */
- break;
- case 't':
- c = '\011'; /* Horizontal Tab */
- break;
- case 'n':
- c = '\012'; /* New Line */
- break;
- case 'v':
- c = '\013'; /* Vertical Tab */
- break;
- case 'f':
- c = '\014'; /* Form Feed */
- break;
- case 'r':
- c = '\015'; /* Carriage Return */
- break;
- case 'e':
- c = '\033'; /* Escape */
- break;
- case 'U': /* Unicode \U+xxxx or \U+xxxxx format */
- {
- int i;
- const Char hex[] = STR("0123456789ABCDEF");
- const Char *h;
- ++p;
- if (*p++ != '+')
- return -1;
- c = 0;
- for (i = 0; i < 5; ++i) {
- h = Strchr(hex, *p++);
- if (!h && i < 4)
- return -1;
- else if (h)
- c = (c << 4) | ((int)(h - hex));
- else
- --p;
- }
- if (c > 0x10FFFF) /* outside valid character range */
- return -1;
- break;
- }
- case '0':
- case '1':
- case '2':
- case '3':
- case '4':
- case '5':
- case '6':
- case '7':
- {
- int cnt, ch;
-
- for (cnt = 0, c = 0; cnt < 3; cnt++) {
- ch = *p++;
- if (ch < '0' || ch > '7') {
- p--;
- break;
- }
- c = (c << 3) | (ch - '0');
- }
- if ((c & (wint_t)0xffffff00) != (wint_t)0)
- return -1;
- --p;
- break;
- }
- default:
- c = *p;
- break;
- }
- } else if (*p == '^') {
- p++;
- c = (*p == '?') ? '\177' : (*p & 0237);
- } else
- c = *p;
- *ptr = ++p;
- return c;
-}
-
-/* parse__string():
- * Parse the escapes from in and put the raw string out
- */
-protected Char *
-parse__string(Char *out, const Char *in)
-{
- Char *rv = out;
- int n;
-
- for (;;)
- switch (*in) {
- case '\0':
- *out = '\0';
- return rv;
-
- case '\\':
- case '^':
- if ((n = parse__escape(&in)) == -1)
- return NULL;
- *out++ = (Char)n;
- break;
-
- case 'M':
- if (in[1] == '-' && in[2] != '\0') {
- *out++ = '\033';
- in += 2;
- break;
- }
- /*FALLTHROUGH*/
-
- default:
- *out++ = *in++;
- break;
- }
-}
-
-
-/* parse_cmd():
- * Return the command number for the command string given
- * or -1 if one is not found
- */
-protected int
-parse_cmd(EditLine *el, const Char *cmd)
-{
- el_bindings_t *b = el->el_map.help;
- size_t i;
-
- for (i = 0; i < el->el_map.nfunc; i++)
- if (Strcmp(b[i].name, cmd) == 0)
- return b[i].func;
- return -1;
-}