root/src/filemanager/info.c

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DEFINITIONS

This source file includes following definitions.
  1. info_box
  2. info_show_info
  3. info_hook
  4. info_callback
  5. info_new

   1 /*
   2    Panel managing.
   3 
   4    Copyright (C) 1994-2021
   5    Free Software Foundation, Inc.
   6 
   7    Written by:
   8    Slava Zanko <slavazanko@gmail.com>, 2013
   9    Andrew Borodin <aborodin@vmail.ru>, 2013
  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 #ifdef ENABLE_EXT2FS_ATTR
  38 #include <e2p/e2p.h>            /* fgetflags() */
  39 #endif
  40 
  41 #include "lib/global.h"
  42 #include "lib/unixcompat.h"
  43 #include "lib/tty/tty.h"
  44 #include "lib/tty/key.h"        /* is_idle() */
  45 #include "lib/skin.h"
  46 #include "lib/strutil.h"
  47 #include "lib/timefmt.h"        /* file_date() */
  48 #include "lib/util.h"
  49 #include "lib/widget.h"
  50 
  51 #include "src/setup.h"          /* panels_options */
  52 
  53 #include "filemanager.h"        /* the_menubar */
  54 #include "layout.h"
  55 #include "mountlist.h"
  56 #ifdef ENABLE_EXT2FS_ATTR
  57 #include "cmd.h"                /* chattr_get_as_str() */
  58 #endif
  59 
  60 #include "info.h"
  61 
  62 /*** global variables ****************************************************************************/
  63 
  64 /*** file scope macro definitions ****************************************************************/
  65 
  66 /*** file scope type declarations ****************************************************************/
  67 
  68 struct WInfo
  69 {
  70     Widget widget;
  71     gboolean ready;
  72 };
  73 
  74 /*** file scope variables ************************************************************************/
  75 
  76 static struct my_statfs myfs_stats;
  77 
  78 /*** file scope functions ************************************************************************/
  79 /* --------------------------------------------------------------------------------------------- */
  80 
  81 static void
  82 info_box (WInfo * info)
     /* [previous][next][first][last][top][bottom][index][help]  */
  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->y, w->x, w->lines, w->cols, FALSE);
  93 
  94     widget_gotoyx (w, 0, (w->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->cols - 1);
 100     tty_print_alt_char (ACS_RTEE, FALSE);
 101     tty_draw_hline (w->y + 2, w->x + 1, ACS_HLINE, w->cols - 2);
 102 }
 103 
 104 /* --------------------------------------------------------------------------------------------- */
 105 
 106 static void
 107 info_show_info (WInfo * info)
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 108 {
 109     Widget *w = WIDGET (info);
 110     static int i18n_adjust = 0;
 111     static const char *file_label;
 112     GString *buff;
 113     struct stat st;
 114     char rp_cwd[PATH_MAX];
 115     const char *p_rp_cwd;
 116 
 117     if (!is_idle ())
 118         return;
 119 
 120     info_box (info);
 121 
 122     tty_setcolor (MARKED_COLOR);
 123     widget_gotoyx (w, 1, 3);
 124     tty_printf (_("Midnight Commander %s"), mc_global.mc_version);
 125 
 126     if (!info->ready)
 127         return;
 128 
 129     if (get_current_type () != view_listing)
 130         return;
 131 
 132     /* don't rely on vpath CWD when cd_symlinks enabled */
 133     p_rp_cwd = mc_realpath (vfs_path_as_str (current_panel->cwd_vpath), rp_cwd);
 134     if (p_rp_cwd == NULL)
 135         p_rp_cwd = vfs_path_as_str (current_panel->cwd_vpath);
 136 
 137     my_statfs (&myfs_stats, p_rp_cwd);
 138 
 139     st = current_panel->dir.list[current_panel->selected].st;
 140 
 141     /* Print only lines which fit */
 142 
 143     if (i18n_adjust == 0)
 144     {
 145         /* This printf pattern string is used as a reference for size */
 146         file_label = _("File: %s");
 147         i18n_adjust = str_term_width1 (file_label) + 2;
 148     }
 149 
 150     tty_setcolor (NORMAL_COLOR);
 151 
 152     buff = g_string_new ("");
 153 
 154     switch (w->lines - 2)
 155     {
 156         /* Note: all cases are fall-throughs */
 157 
 158     default:
 159         MC_FALLTHROUGH;
 160     case 17:
 161         widget_gotoyx (w, 17, 3);
 162         if ((myfs_stats.nfree == 0 && myfs_stats.nodes == 0) ||
 163             (myfs_stats.nfree == (uintmax_t) (-1) && myfs_stats.nodes == (uintmax_t) (-1)))
 164             tty_print_string (_("No node information"));
 165         else if (myfs_stats.nfree == (uintmax_t) (-1))
 166             tty_printf ("%s -/%" PRIuMAX, _("Free nodes:"), myfs_stats.nodes);
 167         else if (myfs_stats.nodes == (uintmax_t) (-1))
 168             tty_printf ("%s %" PRIuMAX "/-", _("Free nodes:"), myfs_stats.nfree);
 169         else
 170             tty_printf ("%s %" PRIuMAX "/%" PRIuMAX " (%d%%)",
 171                         _("Free nodes:"),
 172                         myfs_stats.nfree, myfs_stats.nodes,
 173                         myfs_stats.nodes == 0 ? 0 :
 174                         (int) (100 * (long double) myfs_stats.nfree / myfs_stats.nodes));
 175         MC_FALLTHROUGH;
 176     case 16:
 177         widget_gotoyx (w, 16, 3);
 178         if (myfs_stats.avail == 0 && myfs_stats.total == 0)
 179             tty_print_string (_("No space information"));
 180         else
 181         {
 182             char buffer1[6], buffer2[6];
 183 
 184             size_trunc_len (buffer1, 5, myfs_stats.avail, 1, panels_options.kilobyte_si);
 185             size_trunc_len (buffer2, 5, myfs_stats.total, 1, panels_options.kilobyte_si);
 186             tty_printf (_("Free space: %s/%s (%d%%)"), buffer1, buffer2,
 187                         myfs_stats.total == 0 ? 0 :
 188                         (int) (100 * (long double) myfs_stats.avail / myfs_stats.total));
 189         }
 190         MC_FALLTHROUGH;
 191     case 15:
 192         widget_gotoyx (w, 15, 3);
 193         tty_printf (_("Type:       %s"),
 194                     myfs_stats.typename ? myfs_stats.typename : _("non-local vfs"));
 195         if (myfs_stats.type != 0xffff && myfs_stats.type != -1)
 196             tty_printf (" (%Xh)", (unsigned int) myfs_stats.type);
 197         MC_FALLTHROUGH;
 198     case 14:
 199         widget_gotoyx (w, 14, 3);
 200         str_printf (buff, _("Device:     %s"),
 201                     str_trunc (myfs_stats.device, w->cols - i18n_adjust));
 202         tty_print_string (buff->str);
 203         g_string_set_size (buff, 0);
 204         MC_FALLTHROUGH;
 205     case 13:
 206         widget_gotoyx (w, 13, 3);
 207         str_printf (buff, _("Filesystem: %s"),
 208                     str_trunc (myfs_stats.mpoint, w->cols - i18n_adjust));
 209         tty_print_string (buff->str);
 210         g_string_set_size (buff, 0);
 211         MC_FALLTHROUGH;
 212     case 12:
 213         widget_gotoyx (w, 12, 3);
 214         str_printf (buff, _("Accessed:   %s"), file_date (st.st_atime));
 215         tty_print_string (buff->str);
 216         g_string_set_size (buff, 0);
 217         MC_FALLTHROUGH;
 218     case 11:
 219         widget_gotoyx (w, 11, 3);
 220         str_printf (buff, _("Modified:   %s"), file_date (st.st_mtime));
 221         tty_print_string (buff->str);
 222         g_string_set_size (buff, 0);
 223         MC_FALLTHROUGH;
 224     case 10:
 225         widget_gotoyx (w, 10, 3);
 226         /* The field st_ctime is changed by writing or by setting inode
 227            information (i.e., owner, group, link count, mode, etc.).  */
 228         /* TRANSLATORS: Time of last status change as in stat(2) man. */
 229         str_printf (buff, _("Changed:    %s"), file_date (st.st_ctime));
 230         tty_print_string (buff->str);
 231         g_string_set_size (buff, 0);
 232         MC_FALLTHROUGH;
 233     case 9:
 234         widget_gotoyx (w, 9, 3);
 235 #ifdef HAVE_STRUCT_STAT_ST_RDEV
 236         if (S_ISCHR (st.st_mode) || S_ISBLK (st.st_mode))
 237             tty_printf (_("Dev. type: major %lu, minor %lu"),
 238                         (unsigned long) major (st.st_rdev), (unsigned long) minor (st.st_rdev));
 239         else
 240 #endif
 241         {
 242             char buffer[10];
 243             size_trunc_len (buffer, 9, st.st_size, 0, panels_options.kilobyte_si);
 244             tty_printf (_("Size:       %s"), buffer);
 245 #ifdef HAVE_STRUCT_STAT_ST_BLOCKS
 246             tty_printf (ngettext (" (%lu block)", " (%lu blocks)",
 247                                   (unsigned long) st.st_blocks), (unsigned long) st.st_blocks);
 248 #endif
 249         }
 250         MC_FALLTHROUGH;
 251     case 8:
 252         widget_gotoyx (w, 8, 3);
 253         tty_printf (_("Owner:      %s/%s"), get_owner (st.st_uid), get_group (st.st_gid));
 254         MC_FALLTHROUGH;
 255     case 7:
 256         widget_gotoyx (w, 7, 3);
 257         tty_printf (_("Links:      %d"), (int) st.st_nlink);
 258         MC_FALLTHROUGH;
 259     case 6:
 260         widget_gotoyx (w, 6, 3);
 261 #ifdef ENABLE_EXT2FS_ATTR
 262         if (!vfs_current_is_local ())
 263             tty_print_string (_("Attributes: not supported"));
 264         else
 265         {
 266             vfs_path_t *vpath;
 267             unsigned long attr;
 268 
 269             vpath = vfs_path_from_str (current_panel->dir.list[current_panel->selected].fname->str);
 270 
 271             if (fgetflags (vfs_path_as_str (vpath), &attr) == 0)
 272                 tty_printf (_("Attributes: %s"), chattr_get_as_str (attr));
 273             else
 274                 tty_print_string (_("Attributes: unavailable"));
 275 
 276             vfs_path_free (vpath, TRUE);
 277         }
 278 #else
 279         tty_print_string (_("Attributes: not supported"));
 280 #endif
 281         MC_FALLTHROUGH;
 282     case 5:
 283         widget_gotoyx (w, 5, 3);
 284         tty_printf (_("Mode:       %s (%04o)"),
 285                     string_perm (st.st_mode), (unsigned) st.st_mode & 07777);
 286         MC_FALLTHROUGH;
 287     case 4:
 288         widget_gotoyx (w, 4, 3);
 289         tty_printf (_("Location:   %Xh:%Xh"), (unsigned int) st.st_dev, (unsigned int) st.st_ino);
 290         MC_FALLTHROUGH;
 291     case 3:
 292         {
 293             const char *fname;
 294 
 295             widget_gotoyx (w, 3, 2);
 296             fname = current_panel->dir.list[current_panel->selected].fname->str;
 297             str_printf (buff, file_label, str_trunc (fname, w->cols - i18n_adjust));
 298             tty_print_string (buff->str);
 299         }
 300         MC_FALLTHROUGH;
 301     case 2:
 302         MC_FALLTHROUGH;
 303     case 1:
 304         MC_FALLTHROUGH;
 305     case 0:
 306         ;
 307     }                           /* switch */
 308     g_string_free (buff, TRUE);
 309 }
 310 
 311 /* --------------------------------------------------------------------------------------------- */
 312 
 313 static void
 314 info_hook (void *data)
     /* [previous][next][first][last][top][bottom][index][help]  */
 315 {
 316     WInfo *info = (WInfo *) data;
 317     Widget *other_widget;
 318 
 319     other_widget = get_panel_widget (get_current_index ());
 320     if (!other_widget)
 321         return;
 322     if (widget_overlapped (WIDGET (info), other_widget))
 323         return;
 324 
 325     info->ready = TRUE;
 326     info_show_info (info);
 327 }
 328 
 329 /* --------------------------------------------------------------------------------------------- */
 330 
 331 static cb_ret_t
 332 info_callback (Widget * w, Widget * sender, widget_msg_t msg, int parm, void *data)
     /* [previous][next][first][last][top][bottom][index][help]  */
 333 {
 334     WInfo *info = (WInfo *) w;
 335 
 336     switch (msg)
 337     {
 338     case MSG_INIT:
 339         init_my_statfs ();
 340         add_hook (&select_file_hook, info_hook, info);
 341         info->ready = FALSE;
 342         return MSG_HANDLED;
 343 
 344     case MSG_DRAW:
 345         info_hook (info);
 346         return MSG_HANDLED;
 347 
 348     case MSG_DESTROY:
 349         delete_hook (&select_file_hook, info_hook);
 350         free_my_statfs ();
 351         return MSG_HANDLED;
 352 
 353     default:
 354         return widget_default_callback (w, sender, msg, parm, data);
 355     }
 356 }
 357 
 358 /* --------------------------------------------------------------------------------------------- */
 359 /*** public functions ****************************************************************************/
 360 /* --------------------------------------------------------------------------------------------- */
 361 
 362 WInfo *
 363 info_new (int y, int x, int lines, int cols)
     /* [previous][next][first][last][top][bottom][index][help]  */
 364 {
 365     WInfo *info;
 366     Widget *w;
 367 
 368     info = g_new (struct WInfo, 1);
 369     w = WIDGET (info);
 370     widget_init (w, y, x, lines, cols, info_callback, NULL);
 371 
 372     return info;
 373 }
 374 
 375 /* --------------------------------------------------------------------------------------------- */

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