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- src/filemanager/command.c
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![[top]](../icons/n_top.png){kind=icon}
*/
1 /*
2 Command line widget.
3 This widget is derived from the WInput widget, it's used to cope
4 with all the magic of the command input line, we depend on some
5 help from the program's callback.
6
7 Copyright (C) 1995-2022
8 Free Software Foundation, Inc.
9
10 Written by:
11 Slava Zanko <slavazanko@gmail.com>, 2013
12 Andrew Borodin <aborodin@vmail.ru>, 2011-2022
13
14 This file is part of the Midnight Commander.
15
16 The Midnight Commander is free software: you can redistribute it
17 and/or modify it under the terms of the GNU General Public License as
18 published by the Free Software Foundation, either version 3 of the License,
19 or (at your option) any later version.
20
21 The Midnight Commander is distributed in the hope that it will be useful,
22 but WITHOUT ANY WARRANTY; without even the implied warranty of
23 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 GNU General Public License for more details.
25
26 You should have received a copy of the GNU General Public License
27 along with this program. If not, see <http://www.gnu.org/licenses/>.
28 */
29
30 /** \file command.c
31 * \brief Source: command line widget
32 */
33
34 #include <config.h>
35
36 #include <stdlib.h>
37 #include <string.h>
38
39 #include "lib/global.h"
40 #include "lib/vfs/vfs.h" /* vfs_current_is_local() */
41 #include "lib/skin.h" /* DEFAULT_COLOR */
42 #include "lib/util.h" /* whitespace() */
43 #include "lib/widget.h"
44
45 #include "src/setup.h" /* quit */
46 #ifdef ENABLE_SUBSHELL
47 #include "src/subshell/subshell.h"
48 #endif
49 #include "src/execute.h" /* shell_execute() */
50 #include "src/usermenu.h" /* expand_format() */
51
52 #include "filemanager.h" /* quiet_quit_cmd(), layout.h */
53 #include "cd.h" /* cd_to() */
54
55 #include "command.h"
56
57 /*** global variables ****************************************************************************/
58
59 /* This holds the command line */
60 WInput *cmdline;
61
62 /*** file scope macro definitions ****************************************************************/
63
64 /*** file scope type declarations ****************************************************************/
65
66 /*** file scope variables ************************************************************************/
67
68 /* Color styles command line */
69 static input_colors_t command_colors;
70
71 /* --------------------------------------------------------------------------------------------- */
72 /*** file scope functions ************************************************************************/
73 /* --------------------------------------------------------------------------------------------- */
74
75 /** Handle Enter on the command line
76 *
77 * @param lc_cmdline string for handling
78 * @return MSG_HANDLED on sucsess else MSG_NOT_HANDLED
79 */
80
81 static cb_ret_t
82 enter (WInput * lc_cmdline)
/* ![[next]](../icons/right.png)
![[first]](../icons/n_first.png)
*/
83 {
84 const char *cmd;
85
86 if (!command_prompt)
87 return MSG_HANDLED;
88
89 cmd = input_get_ctext (lc_cmdline);
90
91 /* Any initial whitespace should be removed at this point */
92 while (whiteness (*cmd))
93 cmd++;
94
95 if (*cmd == '\0')
96 return MSG_HANDLED;
97
98 if (strncmp (cmd, "cd", 2) == 0 && (cmd[2] == '\0' || whitespace (cmd[2])))
99 {
100 cd_to (cmd + 2);
101 input_clean (lc_cmdline);
102 return MSG_HANDLED;
103 }
104 else if (strcmp (cmd, "exit") == 0)
105 {
106 input_assign_text (lc_cmdline, "");
107 if (!quiet_quit_cmd ())
108 return MSG_NOT_HANDLED;
109 }
110 else
111 {
112 GString *command;
113 size_t i;
114
115 if (!vfs_current_is_local ())
116 {
117 message (D_ERROR, MSG_ERROR, _("Cannot execute commands on non-local filesystems"));
118 return MSG_NOT_HANDLED;
119 }
120 #ifdef ENABLE_SUBSHELL
121 /* Check this early before we clean command line
122 * (will be checked again by shell_execute) */
123 if (mc_global.tty.use_subshell && subshell_state != INACTIVE)
124 {
125 message (D_ERROR, MSG_ERROR, _("The shell is already running a command"));
126 return MSG_NOT_HANDLED;
127 }
128 #endif
129 command = g_string_sized_new (32);
130
131 for (i = 0; cmd[i] != '\0'; i++)
132 {
133 if (cmd[i] != '%')
134 g_string_append_c (command, cmd[i]);
135 else
136 {
137 char *s;
138
139 s = expand_format (NULL, cmd[++i], TRUE);
140 g_string_append (command, s);
141 g_free (s);
142 }
143 }
144
145 input_clean (lc_cmdline);
146 shell_execute (command->str, 0);
147 g_string_free (command, TRUE);
148
149 #ifdef ENABLE_SUBSHELL
150 if ((quit & SUBSHELL_EXIT) != 0)
151 {
152 if (quiet_quit_cmd ())
153 return MSG_HANDLED;
154
155 quit = 0;
156 /* restart subshell */
157 if (mc_global.tty.use_subshell)
158 init_subshell ();
159 }
160
161 if (mc_global.tty.use_subshell)
162 do_load_prompt ();
163 #endif
164 }
165 return MSG_HANDLED;
166 }
167
168 /* --------------------------------------------------------------------------------------------- */
169
170 /**
171 * Default command line callback
172 *
173 * @param w Widget object
174 * @param msg message for handling
175 * @param parm extra parameter such as key code
176 *
177 * @return MSG_NOT_HANDLED on fail else MSG_HANDLED
178 */
179
180 static cb_ret_t
181 command_callback (Widget * w, Widget * sender, widget_msg_t msg, int parm, void *data)
/* ![[previous]](../icons/left.png)
*/
182 {
183 switch (msg)
184 {
185 case MSG_KEY:
186 /* Special case: we handle the enter key */
187 if (parm == '\n')
188 return enter (INPUT (w));
189 MC_FALLTHROUGH;
190
191 default:
192 return input_callback (w, sender, msg, parm, data);
193 }
194 }
195
196 /* --------------------------------------------------------------------------------------------- */
197 /*** public functions ****************************************************************************/
198 /* --------------------------------------------------------------------------------------------- */
199
200 WInput *
201 command_new (int y, int x, int cols)
/* */
202 {
203 WInput *cmd;
204 Widget *w;
205
206 cmd = input_new (y, x, command_colors, cols, "", "cmdline",
207 INPUT_COMPLETE_FILENAMES | INPUT_COMPLETE_VARIABLES | INPUT_COMPLETE_USERNAMES
208 | INPUT_COMPLETE_HOSTNAMES | INPUT_COMPLETE_CD | INPUT_COMPLETE_COMMANDS |
209 INPUT_COMPLETE_SHELL_ESC);
210 w = WIDGET (cmd);
211 /* Don't set WOP_SELECTABLE up, otherwise panels will be unselected */
212 widget_set_options (w, WOP_SELECTABLE, FALSE);
213 /* Add our hooks */
214 w->callback = command_callback;
215
216 return cmd;
217 }
218
219 /* --------------------------------------------------------------------------------------------- */
220 /**
221 * Set colors for the command line.
222 */
223
224 void
225 command_set_default_colors (void)
/* */
226 {
227 command_colors[WINPUTC_MAIN] = DEFAULT_COLOR;
228 command_colors[WINPUTC_MARK] = COMMAND_MARK_COLOR;
229 command_colors[WINPUTC_UNCHANGED] = DEFAULT_COLOR;
230 command_colors[WINPUTC_HISTORY] = COMMAND_HISTORY_COLOR;
231 }
232
233 /* --------------------------------------------------------------------------------------------- */
234 /**
235 * Insert quoted text in input line. The function is meant for the
236 * command line, so the percent sign is quoted as well.
237 *
238 * @param in WInput object
239 * @param text string for insertion
240 * @param insert_extra_space add extra space
241 */
242
243 void
244 command_insert (WInput * in, const char *text, gboolean insert_extra_space)
/* ![[last]](../icons/n_last.png)
*/
245 {
246 char *quoted_text;
247
248 quoted_text = name_quote (text, TRUE);
249 input_insert (in, quoted_text, insert_extra_space);
250 g_free (quoted_text);
251 }
252
253 /* --------------------------------------------------------------------------------------------- */
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*/