5f2a1d6536
This is the gsoc-2011 project to clean up and backport multibyte support from other nvi forks in a form we can use. USE_WIDECHAR is on unless building for the rescue crunchgen. This should allow editing in the native locale encoding. USE_ICONV depends on make.conf having 'WITH_ICONV=YES' for now. This adds the ability to do things like edit a KOI8-R file while having $LANG set to (say) en_US.UTF-8. iconv is used to transcode the characters for display. Other points: * It uses gencat and catopen/etc instead of homegrown msg catalog stuff. * A lot of stuff has been trimmed out, eg: the perl and tcl bindings which we could never use in base anyway. * It uses ncursesw when in widechar mode. This could be interesting. GSoC info: http://www.google-melange.com/gsoc/proposal/review/google/gsoc2011/zy/1 Repo at: https://github.com/lichray/nvi2 Obtained from: Zhihao Yuan <lichray@gmail.com>
132 lines
3.0 KiB
C
132 lines
3.0 KiB
C
/*-
|
|
* Copyright (c) 1992, 1993, 1994
|
|
* The Regents of the University of California. All rights reserved.
|
|
* Copyright (c) 1992, 1993, 1994, 1995, 1996
|
|
* Keith Bostic. All rights reserved.
|
|
*
|
|
* See the LICENSE file for redistribution information.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#ifndef lint
|
|
static const char sccsid[] = "$Id: ex_cd.c,v 10.13 2012/04/12 06:28:27 zy Exp $";
|
|
#endif /* not lint */
|
|
|
|
#include <sys/queue.h>
|
|
#include <sys/time.h>
|
|
|
|
#include <bitstring.h>
|
|
#include <errno.h>
|
|
#include <limits.h>
|
|
#include <pwd.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include "../common/common.h"
|
|
|
|
/*
|
|
* ex_cd -- :cd[!] [directory]
|
|
* Change directories.
|
|
*
|
|
* PUBLIC: int ex_cd __P((SCR *, EXCMD *));
|
|
*/
|
|
int
|
|
ex_cd(SCR *sp, EXCMD *cmdp)
|
|
{
|
|
struct passwd *pw;
|
|
ARGS *ap;
|
|
int savech;
|
|
char *dir, *p, *t;
|
|
char *buf;
|
|
size_t dlen;
|
|
|
|
/*
|
|
* !!!
|
|
* Historic practice is that the cd isn't attempted if the file has
|
|
* been modified, unless its name begins with a leading '/' or the
|
|
* force flag is set.
|
|
*/
|
|
if (F_ISSET(sp->ep, F_MODIFIED) &&
|
|
!FL_ISSET(cmdp->iflags, E_C_FORCE) && sp->frp->name[0] != '/') {
|
|
msgq(sp, M_ERR,
|
|
"120|File modified since last complete write; write or use ! to override");
|
|
return (1);
|
|
}
|
|
|
|
switch (cmdp->argc) {
|
|
case 0:
|
|
/* If no argument, change to the user's home directory. */
|
|
if ((dir = getenv("HOME")) == NULL) {
|
|
if ((pw = getpwuid(getuid())) == NULL ||
|
|
pw->pw_dir == NULL || pw->pw_dir[0] == '\0') {
|
|
msgq(sp, M_ERR,
|
|
"121|Unable to find home directory location");
|
|
return (1);
|
|
}
|
|
dir = pw->pw_dir;
|
|
}
|
|
break;
|
|
case 1:
|
|
INT2CHAR(sp, cmdp->argv[0]->bp, cmdp->argv[0]->len + 1,
|
|
dir, dlen);
|
|
break;
|
|
default:
|
|
abort();
|
|
}
|
|
|
|
/*
|
|
* Try the current directory first. If this succeeds, don't display
|
|
* a message, vi didn't historically, and it should be obvious to the
|
|
* user where they are.
|
|
*/
|
|
if (!chdir(dir))
|
|
return (0);
|
|
|
|
/*
|
|
* If moving to the user's home directory, or, the path begins with
|
|
* "/", "./" or "../", it's the only place we try.
|
|
*/
|
|
if (cmdp->argc == 0 ||
|
|
(ap = cmdp->argv[0])->bp[0] == '/' ||
|
|
(ap->len == 1 && ap->bp[0] == '.') ||
|
|
(ap->len >= 2 && ap->bp[0] == '.' && ap->bp[1] == '.' &&
|
|
(ap->bp[2] == '/' || ap->bp[2] == '\0')))
|
|
goto err;
|
|
|
|
/* Try the O_CDPATH option values. */
|
|
for (p = t = O_STR(sp, O_CDPATH);; ++p)
|
|
if (*p == '\0' || *p == ':') {
|
|
/*
|
|
* Ignore the empty strings and ".", since we've already
|
|
* tried the current directory.
|
|
*/
|
|
if (t < p && (p - t != 1 || *t != '.')) {
|
|
savech = *p;
|
|
*p = '\0';
|
|
if ((buf = join(t, dir)) == NULL) {
|
|
msgq(sp, M_SYSERR, NULL);
|
|
return (1);
|
|
}
|
|
*p = savech;
|
|
if (!chdir(buf)) {
|
|
free(buf);
|
|
if ((buf = getcwd(NULL, 0)) != NULL) {
|
|
msgq_str(sp, M_INFO, buf, "122|New current directory: %s");
|
|
free(buf);
|
|
}
|
|
return (0);
|
|
}
|
|
free(buf);
|
|
}
|
|
t = p + 1;
|
|
if (*p == '\0')
|
|
break;
|
|
}
|
|
|
|
err: msgq_str(sp, M_SYSERR, dir, "%s");
|
|
return (1);
|
|
}
|