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286 lines
7.7 KiB
C
286 lines
7.7 KiB
C
/* Command line widget.
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Copyright (C) 1995 Miguel de Icaza
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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This widget is derived from the WInput widget, it's used to cope
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with all the magic of the command input line, we depend on some
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help from the program's callback.
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*/
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#include <config.h>
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#include <errno.h>
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#include "tty.h"
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#include "fs.h"
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#include <malloc.h>
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#include <string.h>
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#include <stdlib.h>
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#include "mad.h"
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#include "dlg.h"
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#include "widget.h"
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#include "command.h"
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#include "complete.h" /* completion constants */
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#include "global.h" /* home_dir */
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#include "dialog.h" /* message () */
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#include "dir.h" /* required by panel.h */
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#include "panel.h" /* view_tree enum. Also, needed by main.h */
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#include "main.h" /* do_cd */
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#include "layout.h" /* for command_prompt variable */
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#include "user.h" /* expand_format */
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#include "subshell.h"
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#include "tree.h" /* for tree_chdir */
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#include "color.h"
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#include "../vfs/vfs.h"
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/* This holds the command line */
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WCommand *cmdline;
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/*Tries variable substitution, and if a variable CDPATH
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of the form e.g. CDPATH=".:~:/usr" exists, we try then all the paths which
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are mentioned there. Also, we do not support such extraordinary things as
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${var:-value}, etc. Use the eval cd 'path' command instead.
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Bugs: No quoting occurrs here, so ${VAR} and $VAR will be always
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substituted. I think we can encourage users to use in such extreme
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cases instead of >cd path< command a >eval cd 'path'< command, which works
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as they might expect :)
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FIXME: Perhaps we should do wildcard matching as well? */
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static int examine_cd (char *path)
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{
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char *p;
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int result;
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char *q = xmalloc (MC_MAXPATHLEN + 10, "examine_cd"), *r, *s, *t, c;
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/* Variable expansion */
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for (p = path, r = q; *p && r < q + MC_MAXPATHLEN; ) {
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if (*p != '$' || (p [1] == '[' || p [1] == '('))
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*(r++)=*(p++);
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else {
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p++;
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if (*p == '{') {
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p++;
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s = strchr (p, '}');
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} else
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s = NULL;
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if (s == NULL)
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s = strchr (p, PATH_SEP);
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if (s == NULL)
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s = strchr (p, 0);
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c = *s;
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*s = 0;
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t = getenv (p);
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*s = c;
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if (t == NULL) {
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*(r++) = '$';
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if (*(p - 1) != '$')
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*(r++) = '{';
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} else {
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if (r + strlen (t) < q + MC_MAXPATHLEN) {
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strcpy (r, t);
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r = strchr (r, 0);
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}
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if (*s == '}')
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p = s + 1;
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else
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p = s;
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}
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}
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}
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*r = 0;
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result = do_cd (q, cd_parse_command);
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/* CDPATH handling */
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if (*q != PATH_SEP && !result) {
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p = getenv ("CDPATH");
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if (p == NULL)
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c = 0;
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else
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c = ':';
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while (!result && c == ':') {
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s = strchr (p, ':');
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if (s == NULL)
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s = strchr (p, 0);
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c = *s;
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*s = 0;
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if (*p) {
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r = concat_dir_and_file (p, q);
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result = do_cd (r, cd_parse_command);
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free (r);
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}
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*s = c;
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p = s + 1;
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}
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}
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free (q);
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return result;
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}
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/* Execute the cd command on the command line */
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void do_cd_command (char *cmd)
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{
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int len;
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/* Any final whitespace should be removed here
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(to see why, try "cd fred "). */
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/* NOTE: I think we should not remove the extra space,
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that way, we can cd into hidden directories */
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len = strlen (cmd) - 1;
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while (len >= 0 &&
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(cmd [len] == ' ' || cmd [len] == '\t' || cmd [len] == '\n')){
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cmd [len] = 0;
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len --;
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}
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if (cmd [2] == 0)
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cmd = "cd ";
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if (get_current_type () == view_tree){
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if (cmd [0] == 0){
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tree_chdir (the_tree, home_dir);
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} else if (strcmp (cmd+3, "..") == 0){
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char *dir = cpanel->cwd;
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int len = strlen (dir);
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while (len && dir [--len] != PATH_SEP);
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dir [len] = 0;
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if (len)
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tree_chdir (the_tree, dir);
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else
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tree_chdir (the_tree, PATH_SEP_STR);
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} else if (cmd [3] == PATH_SEP){
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tree_chdir (the_tree, cmd+3);
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} else {
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char *old = cpanel->cwd;
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char *new;
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new = concat_dir_and_file (old, cmd+3);
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tree_chdir (the_tree, new);
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free (new);
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}
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} else
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if (!examine_cd (&cmd [3])) {
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message (1, MSG_ERROR, _(" Can't chdir to '%s' \n %s "),
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&cmd [3], unix_error_string (errno));
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return;
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}
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}
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/* Returns 1 if the we could handle the enter, 0 if not */
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static int enter (WCommand *cmdline)
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{
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Dlg_head *old_dlg;
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if (command_prompt && strlen (input_w (cmdline)->buffer)){
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char *cmd;
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/* Any initial whitespace should be removed at this point */
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cmd = input_w (cmdline)->buffer;
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while (*cmd == ' ' || *cmd == '\t' || *cmd == '\n')
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cmd++;
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if (strncmp (cmd, "cd ", 3) == 0 || strcmp (cmd, "cd") == 0){
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do_cd_command (cmd);
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new_input (input_w (cmdline));
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return MSG_HANDLED;
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}
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#ifdef OS2_NT
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else if ( (strncmp (cmd, "set ", 4) == 0 || strncmp (cmd, "Set ", 4) == 0 || strncmp (cmd, "SET ", 4) == 0) && strchr(cmd,'=') ){
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cmd+=4;
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while (*cmd == ' ' || *cmd == '\t' || *cmd == '\n')
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cmd++;
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_putenv(cmd);
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new_input (input_w (cmdline));
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return MSG_HANDLED;
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}
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#endif
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else {
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char *command, *s;
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int i, j;
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if (!vfs_current_is_local ())
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return MSG_NOT_HANDLED;
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command = xmalloc (strlen (cmd) + 1, "main, enter");
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command [0] = 0;
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for (i = j = 0; i < strlen (cmd); i ++){
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if (cmd [i] == '%'){
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i ++;
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s = expand_format (cmd [i], 1);
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command = realloc (command, strlen (command) + strlen (s)
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+ strlen (cmd) - i + 1);
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strcat (command, s);
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free (s);
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j = strlen (command);
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} else {
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command [j] = cmd [i];
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j ++;
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}
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command [j] = 0;
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}
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old_dlg = current_dlg;
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current_dlg = 0;
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new_input (input_w (cmdline));
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execute (command);
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free (command);
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#ifdef HAVE_SUBSHELL_SUPPORT
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if (quit & SUBSHELL_EXIT){
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quiet_quit_cmd ();
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return MSG_HANDLED;
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}
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if (use_subshell)
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load_prompt (0, 0);
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#endif
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current_dlg = old_dlg;
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}
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}
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return MSG_HANDLED;
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}
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static int command_callback (Dlg_head *h, WCommand *cmd, int msg, int par)
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{
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switch (msg){
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case WIDGET_FOCUS:
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/* We refuse the focus always: needed not to unselect the panel */
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return MSG_NOT_HANDLED;
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case WIDGET_KEY:
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/* Special case: we handle the enter key */
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if (par == '\n'){
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return enter (cmd);
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}
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}
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return (*cmd->old_callback)(h, cmd, msg, par);
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}
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WCommand *command_new (int y, int x, int cols)
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{
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WInput *in;
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WCommand *cmd = xmalloc (sizeof (WCommand), "command_new");
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in = input_new (y, x, DEFAULT_COLOR, cols, "", "cmdline");
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cmd->input = *in;
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free (in);
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/* Add our hooks */
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cmd->old_callback = (callback_fn) cmd->input.widget.callback;
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cmd->input.widget.callback = (int (*) (Dlg_head *, void *, int, int))
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command_callback;
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cmd->input.completion_flags |= INPUT_COMPLETE_COMMANDS;
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return cmd;
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}
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