NetBSD/usr.bin/ftp/complete.c

383 lines
9.1 KiB
C

/* $NetBSD: complete.c,v 1.7 1997/04/14 09:09:16 lukem Exp $ */
/*-
* Copyright (c) 1997 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Luke Mewburn.
*
* 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 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.
*/
#ifndef SMALL
#ifndef lint
static char rcsid[] = "$NetBSD: complete.c,v 1.7 1997/04/14 09:09:16 lukem Exp $";
#endif /* not lint */
/*
* FTP user program - command and file completion routines
*/
#include <ctype.h>
#include <err.h>
#include <dirent.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "ftp_var.h"
static int
comparstr(a, b)
const void *a, *b;
{
return (strcmp(*(char **)a, *(char **)b));
}
/*
* Determine if complete is ambiguous. If unique, insert.
* If no choices, error. If unambiguous prefix, insert that.
* Otherwise, list choices. words is assumed to be filtered
* to only contain possible choices.
* Args:
* word word which started the match
* list list by default
* words stringlist containing possible matches
*/
static unsigned char
complete_ambiguous(word, list, words)
char *word;
int list;
StringList *words;
{
char insertstr[MAXPATHLEN];
char *lastmatch;
int i, j, matchlen, wordlen;
wordlen = strlen(word);
if (words->sl_cur == 0)
return (CC_ERROR); /* no choices available */
if (words->sl_cur == 1) { /* only once choice available */
(void)strcpy(insertstr, words->sl_str[0]);
if (el_insertstr(el, insertstr + wordlen) == -1)
return (CC_ERROR);
else
return (CC_REFRESH);
}
if (!list) {
matchlen = 0;
lastmatch = words->sl_str[0];
matchlen = strlen(lastmatch);
for (i = 1 ; i < words->sl_cur ; i++) {
for (j = wordlen ; j < strlen(words->sl_str[i]); j++)
if (lastmatch[j] != words->sl_str[i][j])
break;
if (j < matchlen)
matchlen = j;
}
if (matchlen > wordlen) {
(void)strncpy(insertstr, lastmatch, matchlen);
insertstr[matchlen] = '\0';
if (el_insertstr(el, insertstr + wordlen) == -1)
return (CC_ERROR);
else
/*
* XXX: really want CC_REFRESH_BEEP
*/
return (CC_REFRESH);
}
}
putchar('\n');
qsort(words->sl_str, words->sl_cur, sizeof(char *), comparstr);
list_vertical(words);
return (CC_REDISPLAY);
}
/*
* Complete a command
*/
static unsigned char
complete_command(word, list)
char *word;
int list;
{
struct cmd *c;
StringList *words;
int wordlen;
unsigned char rv;
words = sl_init();
wordlen = strlen(word);
for (c = cmdtab; c->c_name != NULL; c++) {
if (wordlen > strlen(c->c_name))
continue;
if (strncmp(word, c->c_name, wordlen) == 0)
sl_add(words, c->c_name);
}
rv = complete_ambiguous(word, list, words);
sl_free(words, 0);
return (rv);
}
/*
* Complete a local file
*/
static unsigned char
complete_local(word, list)
char *word;
int list;
{
StringList *words;
char dir[MAXPATHLEN];
char *file;
DIR *dd;
struct dirent *dp;
unsigned char rv;
if ((file = strrchr(word, '/')) == NULL) {
dir[0] = '.';
dir[1] = '\0';
file = word;
} else {
if (file == word) {
dir[0] = '/';
dir[1] = '\0';
} else {
(void)strncpy(dir, word, file - word);
dir[file - word] = '\0';
}
file++;
}
if ((dd = opendir(dir)) == NULL)
return (CC_ERROR);
words = sl_init();
for (dp = readdir(dd); dp != NULL; dp = readdir(dd)) {
if (!strcmp(dp->d_name, ".") || !strcmp(dp->d_name, ".."))
continue;
if (strlen(file) > dp->d_namlen)
continue;
if (strncmp(file, dp->d_name, strlen(file)) == 0) {
char *tcp;
tcp = strdup(dp->d_name);
if (tcp == NULL)
errx(1, "Can't allocate memory for local dir");
sl_add(words, tcp);
}
}
closedir(dd);
rv = complete_ambiguous(file, list, words);
sl_free(words, 1);
return (rv);
}
/*
* Complete a remote file
*/
static unsigned char
complete_remote(word, list)
char *word;
int list;
{
static StringList *dirlist;
static char lastdir[MAXPATHLEN];
StringList *words;
char dir[MAXPATHLEN];
char *file, *cp;
int i;
unsigned char rv;
char *dummyargv[] = { "complete", dir, NULL };
if ((file = strrchr(word, '/')) == NULL) {
dir[0] = '.';
dir[1] = '\0';
file = word;
} else {
cp = file;
while (*cp == '/' && cp > word)
cp--;
if (cp == word) {
dir[0] = '/';
dir[1] = '\0';
} else {
(void)strncpy(dir, word, cp - word + 1);
dir[cp - word + 1] = '\0';
}
file++;
}
if (dirchange || strcmp(dir, lastdir) != 0) { /* dir not cached */
char *emesg;
int dirlen, ftpdslashbug;
dirlen = strlen(dir);
ftpdslashbug = 0;
if (strcmp(dir, "/") == 0)
ftpdslashbug = 1;
else if (strcmp(dir, ".") == 0)
dirlen = 0;
else
dirlen++;
if (dirlist != NULL)
sl_free(dirlist, 1);
dirlist = sl_init();
mflag = 1;
emesg = NULL;
while ((cp = remglob(dummyargv, 0, &emesg)) != NULL) {
char *tcp;
if (!mflag)
continue;
if (*cp == '\0') {
mflag = 0;
continue;
}
/*
* Work around ftpd(1) bug, which puts a // instead
* of / in front of each filename returned by "NLST /".
* Without this, remote completes of / don't work.
* However, only do this if the bug is present.
*/
if (ftpdslashbug && (cp[dirlen] != '/'))
ftpdslashbug = 0;
tcp = strdup(cp + dirlen + ftpdslashbug);
if (tcp == NULL)
errx(1, "Can't allocate memory for remote dir");
sl_add(dirlist, tcp);
}
if (emesg != NULL) {
printf("\n%s\n", emesg);
return (CC_REDISPLAY);
}
(void)strcpy(lastdir, dir);
dirchange = 0;
}
words = sl_init();
for (i = 0; i < dirlist->sl_cur; i++) {
cp = dirlist->sl_str[i];
if (strlen(file) > strlen(cp))
continue;
if (strncmp(file, cp, strlen(file)) == 0)
sl_add(words, cp);
}
rv = complete_ambiguous(file, list, words);
sl_free(words, 0);
return (rv);
}
/*
* Generic complete routine
*/
unsigned char
complete(el, ch)
EditLine *el;
int ch;
{
static char word[FTPBUFLEN];
static int lastc_argc, lastc_argo;
struct cmd *c;
const LineInfo *lf;
int len, celems, dolist;
lf = el_line(el);
len = lf->lastchar - lf->buffer;
if (len >= sizeof(line))
return (CC_ERROR);
(void)strncpy(line, lf->buffer, len);
line[len] = '\0';
cursor_pos = line + (lf->cursor - lf->buffer);
lastc_argc = cursor_argc; /* remember last cursor pos */
lastc_argo = cursor_argo;
makeargv(); /* build argc/argv of current line */
if (cursor_argo >= sizeof(word))
return (CC_ERROR);
dolist = 0;
/* if cursor and word is same, list alternatives */
if (lastc_argc == cursor_argc && lastc_argo == cursor_argo
&& strncmp(word, margv[cursor_argc], cursor_argo) == 0)
dolist = 1;
else
(void)strncpy(word, margv[cursor_argc], cursor_argo);
word[cursor_argo] = '\0';
if (cursor_argc == 0)
return (complete_command(word, dolist));
c = getcmd(margv[0]);
if (c == (struct cmd *)-1 || c == 0)
return (CC_ERROR);
celems = strlen(c->c_complete);
/* check for 'continuation' completes (which are uppercase) */
if ((cursor_argc > celems) && (celems > 0)
&& isupper(c->c_complete[celems-1]))
cursor_argc = celems;
if (cursor_argc > celems)
return (CC_ERROR);
switch (c->c_complete[cursor_argc - 1]) {
case 'l': /* local complete */
case 'L':
return (complete_local(word, dolist));
case 'r': /* remote complete */
case 'R':
if (connected != -1) {
puts("\nMust be logged in to complete.");
return (CC_REDISPLAY);
}
return (complete_remote(word, dolist));
case 'c': /* command complete */
case 'C':
return (complete_command(word, dolist));
case 'n': /* no complete */
default:
return (CC_ERROR);
}
return (CC_ERROR);
}
#endif