src/filemanager/info.c

   1 /*
   2    Panel managing.
   3
   4    Copyright (C) 1994-2024
   5    Free Software Foundation, Inc.
   6
   7    Written by:
   8    Slava Zanko <slavazanko@gmail.com>, 2013
   9    Andrew Borodin <aborodin@vmail.ru>, 2013-2023
  10
  11    This file is part of the Midnight Commander.
  12
  13    The Midnight Commander is free software: you can redistribute it
  14    and/or modify it under the terms of the GNU General Public License as
  15    published by the Free Software Foundation, either version 3 of the License,
  16    or (at your option) any later version.
  17
  18    The Midnight Commander is distributed in the hope that it will be useful,
  19    but WITHOUT ANY WARRANTY; without even the implied warranty of
  20    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21    GNU General Public License for more details.
  22
  23    You should have received a copy of the GNU General Public License
  24    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  25  */
  26
  27 /** \file info.c
  28  *  \brief Source: panel managing
  29  */
  30
  31 #include <config.h>
  32
  33 #include <stdio.h>
  34 #include <stdlib.h>
  35 #include <sys/stat.h>
  36 #include <inttypes.h>           /* PRIuMAX */
  37
  38 #include "lib/global.h"
  39 #include "lib/unixcompat.h"
  40 #include "lib/tty/tty.h"
  41 #include "lib/tty/key.h"        /* is_idle() */
  42 #include "lib/skin.h"
  43 #include "lib/strutil.h"
  44 #include "lib/timefmt.h"        /* file_date() */
  45 #include "lib/util.h"
  46 #include "lib/widget.h"
  47
  48 #include "src/setup.h"          /* panels_options */
  49
  50 #include "filemanager.h"        /* the_menubar */
  51 #include "layout.h"
  52 #include "mountlist.h"
  53 #ifdef ENABLE_EXT2FS_ATTR
  54 #include "cmd.h"                /* chattr_get_as_str() */
  55 #endif
  56
  57 #include "info.h"
  58
  59 /*** global variables ****************************************************************************/
  60
  61 /*** file scope macro definitions ****************************************************************/
  62
  63 /*** file scope type declarations ****************************************************************/
  64
  65 struct WInfo
  66 {
  67     Widget widget;
  68     gboolean ready;
  69 };
  70
  71 /*** forward declarations (file scope functions) *************************************************/
  72
  73 /*** file scope variables ************************************************************************/
  74
  75 static struct my_statfs myfs_stats;
  76
  77 /* --------------------------------------------------------------------------------------------- */
  78 /*** file scope functions ************************************************************************/
  79 /* --------------------------------------------------------------------------------------------- */
  80
  81 static void
  82 info_box (WInfo * info)
  83 {
  84     Widget *w = WIDGET (info);
  85
  86     const char *title = _("Information");
  87     const int len = str_term_width1 (title);
  88
  89     tty_set_normal_attrs ();
  90     tty_setcolor (NORMAL_COLOR);
  91     widget_erase (w);
  92     tty_draw_box (w->rect.y, w->rect.x, w->rect.lines, w->rect.cols, FALSE);
  93
  94     widget_gotoyx (w, 0, (w->rect.cols - len - 2) / 2);
  95     tty_printf (" %s ", title);
  96
  97     widget_gotoyx (w, 2, 0);
  98     tty_print_alt_char (ACS_LTEE, FALSE);
  99     widget_gotoyx (w, 2, w->rect.cols - 1);
 100     tty_print_alt_char (ACS_RTEE, FALSE);
 101     tty_draw_hline (w->rect.y + 2, w->rect.x + 1, ACS_HLINE, w->rect.cols - 2);
 102 }
 103
 104 /* --------------------------------------------------------------------------------------------- */
 105
 106 static void
 107 info_show_info (WInfo * info)
 108 {
 109     const WRect *w = &CONST_WIDGET (info)->rect;
 110     const file_entry_t *fe;
 111     static int i18n_adjust = 0;
 112     static const char *file_label;
 113     GString *buff;
 114     struct stat st;
 115     char rp_cwd[PATH_MAX];
 116     const char *p_rp_cwd;
 117
 118     if (!is_idle ())
 119         return;
 120
 121     info_box (info);
 122
 123     tty_setcolor (MARKED_COLOR);
 124     widget_gotoyx (w, 1, 3);
 125     tty_printf (_("Midnight Commander %s"), mc_global.mc_version);
 126
 127     if (!info->ready)
 128         return;
 129
 130     if (get_current_type () != view_listing)
 131         return;
 132
 133     /* don't rely on vpath CWD when cd_symlinks enabled */
 134     p_rp_cwd = mc_realpath (vfs_path_as_str (current_panel->cwd_vpath), rp_cwd);
 135     if (p_rp_cwd == NULL)
 136         p_rp_cwd = vfs_path_as_str (current_panel->cwd_vpath);
 137
 138     my_statfs (&myfs_stats, p_rp_cwd);
 139
 140     fe = panel_current_entry (current_panel);
 141
 142     st = fe->st;
 143
 144     /* Print only lines which fit */
 145
 146     if (i18n_adjust == 0)
 147     {
 148         /* This printf pattern string is used as a reference for size */
 149         file_label = _("File: %s");
 150         i18n_adjust = str_term_width1 (file_label) + 2;
 151     }
 152
 153     tty_setcolor (NORMAL_COLOR);
 154
 155     buff = g_string_new ("");
 156
 157     switch (w->lines - 2)
 158     {
 159         /* Note: all cases are fall-throughs */
 160
 161     default:
 162         MC_FALLTHROUGH;
 163     case 17:
 164         widget_gotoyx (w, 17, 3);
 165         if ((myfs_stats.nfree == 0 && myfs_stats.nodes == 0) ||
 166             (myfs_stats.nfree == (uintmax_t) (-1) && myfs_stats.nodes == (uintmax_t) (-1)))
 167             tty_print_string (_("No node information"));
 168         else if (myfs_stats.nfree == (uintmax_t) (-1))
 169             tty_printf ("%s - / %" PRIuMAX, _("Free nodes:"), myfs_stats.nodes);
 170         else if (myfs_stats.nodes == (uintmax_t) (-1))
 171             tty_printf ("%s %" PRIuMAX " / -", _("Free nodes:"), myfs_stats.nfree);
 172         else
 173             tty_printf ("%s %" PRIuMAX " / %" PRIuMAX " (%d%%)",
 174                         _("Free nodes:"),
 175                         myfs_stats.nfree, myfs_stats.nodes,
 176                         myfs_stats.nodes == 0 ? 0 :
 177                         (int) (100 * (long double) myfs_stats.nfree / myfs_stats.nodes));
 178         MC_FALLTHROUGH;
 179     case 16:
 180         widget_gotoyx (w, 16, 3);
 181         if (myfs_stats.avail == 0 && myfs_stats.total == 0)
 182             tty_print_string (_("No space information"));
 183         else
 184         {
 185             char buffer1[6], buffer2[6];
 186
 187             size_trunc_len (buffer1, 5, myfs_stats.avail, 1, panels_options.kilobyte_si);
 188             size_trunc_len (buffer2, 5, myfs_stats.total, 1, panels_options.kilobyte_si);
 189             tty_printf (_("Free space: %s / %s (%d%%)"), buffer1, buffer2,
 190                         myfs_stats.total == 0 ? 0 :
 191                         (int) (100 * (long double) myfs_stats.avail / myfs_stats.total));
 192         }
 193         MC_FALLTHROUGH;
 194     case 15:
 195         widget_gotoyx (w, 15, 3);
 196         tty_printf (_("Type:       %s"),
 197                     myfs_stats.typename ? myfs_stats.typename : _("non-local vfs"));
 198         if (myfs_stats.type != 0xffff && myfs_stats.type != -1)
 199             tty_printf (" (%Xh)", (unsigned int) myfs_stats.type);
 200         MC_FALLTHROUGH;
 201     case 14:
 202         widget_gotoyx (w, 14, 3);
 203         str_printf (buff, _("Device:     %s"),
 204                     str_trunc (myfs_stats.device, w->cols - i18n_adjust));
 205         tty_print_string (buff->str);
 206         g_string_set_size (buff, 0);
 207         MC_FALLTHROUGH;
 208     case 13:
 209         widget_gotoyx (w, 13, 3);
 210         str_printf (buff, _("Filesystem: %s"),
 211                     str_trunc (myfs_stats.mpoint, w->cols - i18n_adjust));
 212         tty_print_string (buff->str);
 213         g_string_set_size (buff, 0);
 214         MC_FALLTHROUGH;
 215     case 12:
 216         widget_gotoyx (w, 12, 3);
 217         str_printf (buff, _("Accessed:   %s"), file_date (st.st_atime));
 218         tty_print_string (buff->str);
 219         g_string_set_size (buff, 0);
 220         MC_FALLTHROUGH;
 221     case 11:
 222         widget_gotoyx (w, 11, 3);
 223         str_printf (buff, _("Modified:   %s"), file_date (st.st_mtime));
 224         tty_print_string (buff->str);
 225         g_string_set_size (buff, 0);
 226         MC_FALLTHROUGH;
 227     case 10:
 228         widget_gotoyx (w, 10, 3);
 229         /* The field st_ctime is changed by writing or by setting inode
 230            information (i.e., owner, group, link count, mode, etc.).  */
 231         /* TRANSLATORS: Time of last status change as in stat(2) man. */
 232         str_printf (buff, _("Changed:    %s"), file_date (st.st_ctime));
 233         tty_print_string (buff->str);
 234         g_string_set_size (buff, 0);
 235         MC_FALLTHROUGH;
 236     case 9:
 237         widget_gotoyx (w, 9, 3);
 238 #ifdef HAVE_STRUCT_STAT_ST_RDEV
 239         if (S_ISCHR (st.st_mode) || S_ISBLK (st.st_mode))
 240             tty_printf (_("Dev. type: major %lu, minor %lu"),
 241                         (unsigned long) major (st.st_rdev), (unsigned long) minor (st.st_rdev));
 242         else
 243 #endif
 244         {
 245             char buffer[10];
 246             size_trunc_len (buffer, 9, st.st_size, 0, panels_options.kilobyte_si);
 247             tty_printf (_("Size:       %s"), buffer);
 248 #ifdef HAVE_STRUCT_STAT_ST_BLOCKS
 249             tty_printf (ngettext (" (%lu block)", " (%lu blocks)",
 250                                   (unsigned long) st.st_blocks), (unsigned long) st.st_blocks);
 251 #endif
 252         }
 253         MC_FALLTHROUGH;
 254     case 8:
 255         widget_gotoyx (w, 8, 3);
 256         tty_printf (_("Owner:      %s/%s"), get_owner (st.st_uid), get_group (st.st_gid));
 257         MC_FALLTHROUGH;
 258     case 7:
 259         widget_gotoyx (w, 7, 3);
 260         tty_printf (_("Links:      %d"), (int) st.st_nlink);
 261         MC_FALLTHROUGH;
 262     case 6:
 263         widget_gotoyx (w, 6, 3);
 264
 265 #ifdef ENABLE_EXT2FS_ATTR
 266         {
 267             vfs_path_t *vpath;
 268             unsigned long attr;
 269
 270             vpath = vfs_path_from_str (fe->fname->str);
 271
 272             if (mc_fgetflags (vpath, &attr) == 0)
 273                 tty_printf (_("Attributes: %s"), chattr_get_as_str (attr));
 274             else
 275                 tty_print_string (_("Attributes: unavailable"));
 276
 277             vfs_path_free (vpath, TRUE);
 278         }
 279 #else
 280         tty_print_string (_("Attributes: unavailable"));
 281 #endif /* ENABLE_EXT2FS_ATTR */
 282         MC_FALLTHROUGH;
 283     case 5:
 284         widget_gotoyx (w, 5, 3);
 285         tty_printf (_("Mode:       %s (%04o)"),
 286                     string_perm (st.st_mode), (unsigned) st.st_mode & 07777);
 287         MC_FALLTHROUGH;
 288     case 4:
 289         widget_gotoyx (w, 4, 3);
 290         tty_printf (_("Location:   %Xh:%Xh"), (unsigned int) st.st_dev, (unsigned int) st.st_ino);
 291         MC_FALLTHROUGH;
 292     case 3:
 293         {
 294             const char *fname;
 295
 296             widget_gotoyx (w, 3, 2);
 297             fname = fe->fname->str;
 298             str_printf (buff, file_label, str_trunc (fname, w->cols - i18n_adjust));
 299             tty_print_string (buff->str);
 300         }
 301         MC_FALLTHROUGH;
 302     case 2:
 303         MC_FALLTHROUGH;
 304     case 1:
 305         MC_FALLTHROUGH;
 306     case 0:
 307         ;
 308     }                           /* switch */
 309     g_string_free (buff, TRUE);
 310 }
 311
 312 /* --------------------------------------------------------------------------------------------- */
 313
 314 static void
 315 info_hook (void *data)
 316 {
 317     WInfo *info = (WInfo *) data;
 318     Widget *other_widget;
 319
 320     other_widget = get_panel_widget (get_current_index ());
 321     if (!other_widget)
 322         return;
 323     if (widget_overlapped (WIDGET (info), other_widget))
 324         return;
 325
 326     info->ready = TRUE;
 327     info_show_info (info);
 328 }
 329
 330 /* --------------------------------------------------------------------------------------------- */
 331
 332 static cb_ret_t
 333 info_callback (Widget * w, Widget * sender, widget_msg_t msg, int parm, void *data)
 334 {
 335     WInfo *info = (WInfo *) w;
 336
 337     switch (msg)
 338     {
 339     case MSG_INIT:
 340         init_my_statfs ();
 341         add_hook (&select_file_hook, info_hook, info);
 342         info->ready = FALSE;
 343         return MSG_HANDLED;
 344
 345     case MSG_DRAW:
 346         info_hook (info);
 347         return MSG_HANDLED;
 348
 349     case MSG_DESTROY:
 350         delete_hook (&select_file_hook, info_hook);
 351         free_my_statfs ();
 352         return MSG_HANDLED;
 353
 354     default:
 355         return widget_default_callback (w, sender, msg, parm, data);
 356     }
 357 }
 358
 359 /* --------------------------------------------------------------------------------------------- */
 360 /*** public functions ****************************************************************************/
 361 /* --------------------------------------------------------------------------------------------- */
 362
 363 WInfo *
 364 info_new (const WRect * r)
 365 {
 366     WInfo *info;
 367     Widget *w;
 368
 369     info = g_new (struct WInfo, 1);
 370     w = WIDGET (info);
 371     widget_init (w, r, info_callback, NULL);
 372
 373     return info;
 374 }
 375
 376 /* --------------------------------------------------------------------------------------------- */