1 files changed, 255 insertions, 0 deletions
diff --git a/src/filemanager/command.c b/src/filemanager/command.c
new file mode 100644
index 0000000..47d2d75
--- /dev/null
+++ b/src/filemanager/command.c
@@ -0,0 +1,255 @@
+/*
+   Command line widget.
+   This widget is derived from the WInput widget, it's used to cope
+   with all the magic of the command input line, we depend on some
+   help from the program's callback.
+
+   Copyright (C) 1995-2023
+   Free Software Foundation, Inc.
+
+   Written by:
+   Slava Zanko <slavazanko@gmail.com>, 2013
+   Andrew Borodin <aborodin@vmail.ru>, 2011-2022
+
+   This file is part of the Midnight Commander.
+
+   The Midnight Commander is free software: you can redistribute it
+   and/or modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation, either version 3 of the License,
+   or (at your option) any later version.
+
+   The Midnight Commander is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/** \file command.c
+ *  \brief Source: command line widget
+ */
+
+#include <config.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "lib/global.h"
+#include "lib/vfs/vfs.h"        /* vfs_current_is_local() */
+#include "lib/skin.h"           /* DEFAULT_COLOR */
+#include "lib/util.h"           /* whitespace() */
+#include "lib/widget.h"
+
+#include "src/setup.h"          /* quit */
+#ifdef ENABLE_SUBSHELL
+#include "src/subshell/subshell.h"
+#endif
+#include "src/execute.h"        /* shell_execute() */
+#include "src/usermenu.h"       /* expand_format() */
+
+#include "filemanager.h"        /* quiet_quit_cmd(), layout.h */
+#include "cd.h"                 /* cd_to() */
+
+#include "command.h"
+
+/*** global variables ****************************************************************************/
+
+/* This holds the command line */
+WInput *cmdline;
+
+/*** file scope macro definitions ****************************************************************/
+
+/*** file scope type declarations ****************************************************************/
+
+/*** forward declarations (file scope functions) *************************************************/
+
+/*** file scope variables ************************************************************************/
+
+/* Color styles command line */
+static input_colors_t command_colors;
+
+/* --------------------------------------------------------------------------------------------- */
+/*** file scope functions ************************************************************************/
+/* --------------------------------------------------------------------------------------------- */
+
+/** Handle Enter on the command line
+ *
+ * @param lc_cmdline string for handling
+ * @return MSG_HANDLED on success else MSG_NOT_HANDLED
+ */
+
+static cb_ret_t
+enter (WInput * lc_cmdline)
+{
+    const char *cmd;
+
+    if (!command_prompt)
+        return MSG_HANDLED;
+
+    cmd = input_get_ctext (lc_cmdline);
+
+    /* Any initial whitespace should be removed at this point */
+    while (whiteness (*cmd))
+        cmd++;
+
+    if (*cmd == '\0')
+        return MSG_HANDLED;
+
+    if (strncmp (cmd, "cd", 2) == 0 && (cmd[2] == '\0' || whitespace (cmd[2])))
+    {
+        cd_to (cmd + 2);
+        input_clean (lc_cmdline);
+        return MSG_HANDLED;
+    }
+    else if (strcmp (cmd, "exit") == 0)
+    {
+        input_assign_text (lc_cmdline, "");
+        if (!quiet_quit_cmd ())
+            return MSG_NOT_HANDLED;
+    }
+    else
+    {
+        GString *command;
+        size_t i;
+
+        if (!vfs_current_is_local ())
+        {
+            message (D_ERROR, MSG_ERROR, _("Cannot execute commands on non-local filesystems"));
+            return MSG_NOT_HANDLED;
+        }
+#ifdef ENABLE_SUBSHELL
+        /* Check this early before we clean command line
+         * (will be checked again by shell_execute) */
+        if (mc_global.tty.use_subshell && subshell_state != INACTIVE)
+        {
+            message (D_ERROR, MSG_ERROR, _("The shell is already running a command"));
+            return MSG_NOT_HANDLED;
+        }
+#endif
+        command = g_string_sized_new (32);
+
+        for (i = 0; cmd[i] != '\0'; i++)
+        {
+            if (cmd[i] != '%')
+                g_string_append_c (command, cmd[i]);
+            else
+            {
+                char *s;
+
+                s = expand_format (NULL, cmd[++i], TRUE);
+                g_string_append (command, s);
+                g_free (s);
+            }
+        }
+
+        input_clean (lc_cmdline);
+        shell_execute (command->str, 0);
+        g_string_free (command, TRUE);
+
+#ifdef ENABLE_SUBSHELL
+        if ((quit & SUBSHELL_EXIT) != 0)
+        {
+            if (quiet_quit_cmd ())
+                return MSG_HANDLED;
+
+            quit = 0;
+            /* restart subshell */
+            if (mc_global.tty.use_subshell)
+                init_subshell ();
+        }
+
+        if (mc_global.tty.use_subshell)
+            do_load_prompt ();
+#endif
+    }
+    return MSG_HANDLED;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+/**
+ * Default command line callback
+ *
+ * @param w Widget object
+ * @param msg message for handling
+ * @param parm extra parameter such as key code
+ *
+ * @return MSG_NOT_HANDLED on fail else MSG_HANDLED
+ */
+
+static cb_ret_t
+command_callback (Widget * w, Widget * sender, widget_msg_t msg, int parm, void *data)
+{
+    switch (msg)
+    {
+    case MSG_KEY:
+        /* Special case: we handle the enter key */
+        if (parm == '\n')
+            return enter (INPUT (w));
+        MC_FALLTHROUGH;
+
+    default:
+        return input_callback (w, sender, msg, parm, data);
+    }
+}
+
+/* --------------------------------------------------------------------------------------------- */
+/*** public functions ****************************************************************************/
+/* --------------------------------------------------------------------------------------------- */
+
+WInput *
+command_new (int y, int x, int cols)
+{
+    WInput *cmd;
+    Widget *w;
+
+    cmd = input_new (y, x, command_colors, cols, "", "cmdline",
+                     INPUT_COMPLETE_FILENAMES | INPUT_COMPLETE_VARIABLES | INPUT_COMPLETE_USERNAMES
+                     | INPUT_COMPLETE_HOSTNAMES | INPUT_COMPLETE_CD | INPUT_COMPLETE_COMMANDS |
+                     INPUT_COMPLETE_SHELL_ESC);
+    w = WIDGET (cmd);
+    /* Don't set WOP_SELECTABLE up, otherwise panels will be unselected */
+    widget_set_options (w, WOP_SELECTABLE, FALSE);
+    /* Add our hooks */
+    w->callback = command_callback;
+
+    return cmd;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+/**
+ * Set colors for the command line.
+ */
+
+void
+command_set_default_colors (void)
+{
+    command_colors[WINPUTC_MAIN] = DEFAULT_COLOR;
+    command_colors[WINPUTC_MARK] = COMMAND_MARK_COLOR;
+    command_colors[WINPUTC_UNCHANGED] = DEFAULT_COLOR;
+    command_colors[WINPUTC_HISTORY] = COMMAND_HISTORY_COLOR;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+/**
+ * Insert quoted text in input line.  The function is meant for the
+ * command line, so the percent sign is quoted as well.
+ *
+ * @param in WInput object
+ * @param text string for insertion
+ * @param insert_extra_space add extra space
+ */
+
+void
+command_insert (WInput * in, const char *text, gboolean insert_extra_space)
+{
+    char *quoted_text;
+
+    quoted_text = name_quote (text, TRUE);
+    input_insert (in, quoted_text, insert_extra_space);
+    g_free (quoted_text);
+}
+
+/* --------------------------------------------------------------------------------------------- */