365 lines
8.7 KiB
C
365 lines
8.7 KiB
C
/* $NetBSD: complete.c,v 1.2 1997/02/01 10:44:57 lukem Exp $ */
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/*-
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* Copyright (c) 1997 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Luke Mewburn.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef lint
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static char rcsid[] = "$NetBSD: complete.c,v 1.2 1997/02/01 10:44:57 lukem Exp $";
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#endif /* not lint */
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/*
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* FTP user program - command and file completion routines
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*/
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#include <ctype.h>
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#include <err.h>
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#include <dirent.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "ftp_var.h"
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static int
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comparstr(a, b)
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const void *a, *b;
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{
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return strcmp(*(char **)a, *(char **)b);
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}
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/*
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* Determine if complete is ambiguous. If unique, insert.
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* If no choices, error. If unambiguous prefix, insert that.
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* Otherwise, list choices. words is assumed to be filtered
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* to only contain possible choices.
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* Args:
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* word word which started the match
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* list list by default
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* words stringlist containing possible matches
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*/
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static unsigned char
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complete_ambiguous(word, list, words)
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char *word;
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int list;
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StringList *words;
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{
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char insertstr[MAXPATHLEN + 1];
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char *lastmatch;
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int i, j, matchlen, wordlen;
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wordlen = strlen(word);
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if (words->sl_cur == 0)
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return CC_ERROR; /* no choices available */
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if (words->sl_cur == 1) { /* only once choice available */
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strcpy(insertstr, words->sl_str[0]);
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if (el_insertstr(el, insertstr + wordlen) == -1)
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return CC_ERROR;
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else
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return CC_REFRESH;
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}
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if (!list) {
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matchlen = 0;
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lastmatch = words->sl_str[0];
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matchlen = strlen(lastmatch);
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for (i = 1 ; i < words->sl_cur ; i++) {
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for (j = wordlen ; j < strlen(words->sl_str[i]); j++)
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if (lastmatch[j] != words->sl_str[i][j])
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break;
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if (j < matchlen)
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matchlen = j;
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}
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if (matchlen > wordlen) {
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strncpy(insertstr, lastmatch, matchlen);
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insertstr[matchlen] = '\0';
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if (el_insertstr(el, insertstr + wordlen) == -1)
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return CC_ERROR;
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else
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/*
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* XXX: really want CC_REFRESH_BEEP
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*/
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return CC_REFRESH;
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}
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}
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putchar('\n');
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qsort(words->sl_str, words->sl_cur, sizeof(char *), comparstr);
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list_vertical(words);
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return CC_REDISPLAY;
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}
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/*
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* Complete a command
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*/
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static unsigned char
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complete_command(word, list)
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char *word;
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int list;
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{
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struct cmd *c;
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StringList *words;
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int wordlen;
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unsigned char rv;
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words = sl_init();
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wordlen = strlen(word);
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for (c = cmdtab; c->c_name != NULL; c++) {
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if (wordlen > strlen(c->c_name))
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continue;
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if (strncmp(word, c->c_name, wordlen) == 0)
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sl_add(words, c->c_name);
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}
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rv = complete_ambiguous(word, list, words);
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sl_free(words, 0);
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return rv;
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}
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/*
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* Complete a local file
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*/
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static unsigned char
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complete_local(word, list)
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char *word;
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int list;
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{
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StringList *words;
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char dir[MAXPATHLEN + 1];
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char *file;
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DIR *dd;
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struct dirent *dp;
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unsigned char rv;
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if ((file = strrchr(word, '/')) == NULL) {
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strcpy(dir, ".");
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file = word;
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} else {
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if (file == word)
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strcpy(dir, "/");
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else {
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strncpy(dir, word, file - word);
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dir[file - word] = '\0';
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}
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++file;
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}
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if ((dd = opendir(dir)) == NULL)
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return CC_ERROR;
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words = sl_init();
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for (dp = readdir(dd); dp != NULL; dp = readdir(dd)) {
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if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
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continue;
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if (strlen(file) > dp->d_namlen)
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continue;
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if (strncmp(file, dp->d_name, strlen(file)) == 0) {
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char *tcp;
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tcp = strdup(dp->d_name);
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if (tcp == NULL)
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errx(1, "Can't allocate memory for local dir");
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sl_add(words, tcp);
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}
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}
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closedir(dd);
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rv = complete_ambiguous(file, list, words);
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sl_free(words, 1);
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return rv;
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}
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/*
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* Complete a remote file
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*/
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static unsigned char
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complete_remote(word, list)
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char *word;
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int list;
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{
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static StringList *dirlist;
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static char lastdir[MAXPATHLEN + 1];
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static int ftpdslashbug;
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StringList *words;
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char dir[MAXPATHLEN + 1];
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char *file, *cp;
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int i, offset;
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unsigned char rv;
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char *dummyargv[] = { "complete", dir, NULL };
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offset = 0;
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if ((file = strrchr(word, '/')) == NULL) {
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strcpy(dir, ".");
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file = word;
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} else {
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if (file == word)
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strcpy(dir, "/");
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else {
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offset = file - word;
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strncpy(dir, word, offset);
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dir[offset] = '\0';
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offset++;
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}
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file++;
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}
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if (dirchange || strcmp(dir, lastdir) != 0) { /* dir not cached */
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if (dirlist != NULL)
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sl_free(dirlist, 1);
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dirlist = sl_init();
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ftpdslashbug = 0;
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mflag = 1;
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while ((cp = remglob(dummyargv, 0)) != NULL) {
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char *tcp;
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if (!mflag)
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continue;
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if (*cp == '\0') {
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mflag = 0;
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continue;
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}
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/*
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* Work around ftpd(1) bug, which puts a // instead
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* of / in front of each filename returned by "NLST /".
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* Without this, remote completes of / look ugly.
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*/
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if (dir[0] == '/' && dir[1] == '\0' &&
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cp[0] == '/' && cp[1] == '/') {
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cp++;
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ftpdslashbug = 1;
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}
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tcp = strdup(cp);
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if (tcp == NULL)
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errx(1, "Can't allocate memory for remote dir");
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sl_add(dirlist, tcp);
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}
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strcpy(lastdir, dir);
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dirchange = 0;
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}
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words = sl_init();
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for (i = 0; i < dirlist->sl_cur; i++) {
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cp = dirlist->sl_str[i];
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if (strlen(word) > strlen(cp))
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continue;
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if (strncmp(word, cp, strlen(word)) == 0)
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sl_add(words, cp + offset + ftpdslashbug);
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}
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rv = complete_ambiguous(file, list, words);
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sl_free(words, 0);
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return rv;
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}
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/*
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* Generic complete routine
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*/
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unsigned char
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complete(el, ch)
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EditLine *el;
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int ch;
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{
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static char word[FTPBUFLEN];
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static int lastc_argc, lastc_argo;
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struct cmd *c;
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const LineInfo *lf;
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int len, celems, dolist;
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lf = el_line(el);
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len = lf->lastchar - lf->buffer;
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if (len >= sizeof(line))
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return CC_ERROR;
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strncpy(line, lf->buffer, len);
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line[len] = '\0';
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cursor_pos = line + (lf->cursor - lf->buffer);
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lastc_argc = cursor_argc; /* remember last cursor pos */
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lastc_argo = cursor_argo;
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makeargv(); /* build argc/argv of current line */
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if (cursor_argo >= sizeof(word))
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return CC_ERROR;
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dolist = 0;
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/* if cursor and word is same, list alternatives */
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if (lastc_argc == cursor_argc && lastc_argo == cursor_argo
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&& strncmp(word, margv[cursor_argc], cursor_argo) == 0)
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dolist = 1;
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else
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strncpy(word, margv[cursor_argc], cursor_argo);
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word[cursor_argo] = '\0';
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if (cursor_argc == 0)
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return complete_command(word, dolist);
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c = getcmd(margv[0]);
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if (c == (struct cmd *)-1 || c == 0)
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return CC_ERROR;
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celems = strlen(c->c_complete);
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/* check for 'continuation' completes (which are uppercase) */
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if ((cursor_argc > celems) && (celems > 0)
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&& isupper(c->c_complete[celems-1]))
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cursor_argc = celems;
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if (cursor_argc > celems)
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return CC_ERROR;
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switch (c->c_complete[cursor_argc - 1]) {
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case 'l': /* local complete */
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case 'L':
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return complete_local(word, dolist);
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case 'r': /* remote complete */
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case 'R':
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if (!connected) {
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printf("\nMust be connected to complete\n");
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return CC_REDISPLAY;
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}
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return complete_remote(word, dolist);
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case 'c': /* command complete */
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case 'C':
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return complete_command(word, dolist);
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case 'n': /* no complete */
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default:
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return CC_ERROR;
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}
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return CC_ERROR;
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}
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