gnu/lib/libdialog/prgbox.c

   1 /*
   2  *  prgbox.c -- implements the message box and info box
   3  *
   4  *  AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
   5  *
   6  *  This program is free software; you can redistribute it and/or
   7  *  modify it under the terms of the GNU General Public License
   8  *  as published by the Free Software Foundation; either version 2
   9  *  of the License, or (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  *
  20  * $FreeBSD: src/gnu/lib/libdialog/prgbox.c,v 1.12.6.1 2000/12/15 05:54:36 jkh Exp $
  21  * $DragonFly: src/gnu/lib/libdialog/prgbox.c,v 1.2 2003/06/17 04:25:43 dillon Exp $
  22  */
  23
  24
  25 #include <sys/types.h>
  26
  27 #include <dialog.h>
  28 #include <errno.h>
  29 #include <sys/wait.h>
  30 #include "dialog.priv.h"
  31
  32 /*
  33  * Display a message box. Program will pause and display an "OK" button
  34  * if the parameter 'pause' is non-zero.
  35  */
  36 int dialog_prgbox(unsigned char *title, const unsigned char *line, int height, int width, int pause, int use_shell)
  37 {
  38   int i, x, y, key = 0;
  39   WINDOW *dialog;
  40   FILE *f;
  41   const unsigned char *name;
  42   unsigned char *s, buf[MAX_LEN];
  43   int status;
  44
  45   if (height < 0 || width < 0) {
  46     endwin();
  47     fprintf(stderr, "\nAutosizing is impossible in dialog_prgbox().\n");
  48     exit(-1);
  49   }
  50   width = MAX(width,10);
  51
  52   if (width > COLS)
  53         width = COLS;
  54   if (height > LINES)
  55         height = LINES;
  56   /* center dialog box on screen */
  57   x = DialogX ? DialogX : (COLS - width)/2;
  58   y = DialogY ? DialogY : (LINES - height)/2;
  59
  60 #ifdef HAVE_NCURSES
  61   if (use_shadow)
  62     draw_shadow(stdscr, y, x, height, width);
  63 #endif
  64   dialog = newwin(height, width, y, x);
  65   if (dialog == NULL) {
  66     endwin();
  67     fprintf(stderr, "\nnewwin(%d,%d,%d,%d) failed, maybe wrong dims\n", height,width,y,x);
  68     exit(1);
  69   }
  70   keypad(dialog, TRUE);
  71
  72   draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
  73
  74   if (title != NULL) {
  75     wattrset(dialog, title_attr);
  76     wmove(dialog, 0, (width - strlen(title))/2 - 1);
  77     waddch(dialog, ' ');
  78     waddstr(dialog, title);
  79     waddch(dialog, ' ');
  80   }
  81   wattrset(dialog, dialog_attr);
  82   wmove(dialog, 1, 2);
  83
  84   if (!use_shell) {
  85     char cmdline[MAX_LEN];
  86     char *av[51], **ap = av, *val, *p;
  87
  88     strcpy(cmdline, line);
  89     p = cmdline;
  90     while ((val = strsep(&p," \t")) != NULL) {
  91       if (*val != '\0')
  92         *ap++ = val;
  93     }
  94     *ap = NULL;
  95     f = raw_popen(name = av[0], av, "r");
  96   } else
  97     f = raw_popen(name = line, NULL, "r");
  98
  99   status = -1;
 100   if (f == NULL) {
 101   err:
 102       sprintf(buf, "%s: %s\n", name, strerror(errno));
 103   prr:
 104       print_autowrap(dialog, buf, height-(pause?3:1), width-2, width, 1, 2, FALSE, TRUE);
 105       wrefresh(dialog);
 106   } else {
 107     while (fgets(buf, sizeof(buf), f) != NULL) {
 108       i = strlen(buf);
 109       if (buf[i-1] == '\n')
 110         buf[i-1] = '\0';
 111       s = buf;
 112       while ((s = strchr(s, '\t')) != NULL)
 113         *s++ = ' ';
 114       print_autowrap(dialog, buf, height-(pause?3:1), width-2, width, 1, 2, FALSE, TRUE);
 115       print_autowrap(dialog, "\n", height-(pause?3:1), width-2, width, 1, 2, FALSE, FALSE);
 116       wrefresh(dialog);
 117     }
 118     if ((status = raw_pclose(f)) == -1)
 119       goto err;
 120     if (WIFEXITED(status) && WEXITSTATUS(status) == 127) {
 121       sprintf(buf, "%s: program not found\n", name);
 122       goto prr;
 123     }
 124   }
 125
 126   if (pause) {
 127     wattrset(dialog, border_attr);
 128     wmove(dialog, height-3, 0);
 129     waddch(dialog, ACS_LTEE);
 130     for (i = 0; i < width-2; i++)
 131       waddch(dialog, ACS_HLINE);
 132     wattrset(dialog, dialog_attr);
 133     waddch(dialog, ACS_RTEE);
 134     wmove(dialog, height-2, 1);
 135     for (i = 0; i < width-2; i++)
 136     waddch(dialog, ' ');
 137     display_helpline(dialog, height-1, width);
 138     print_button(dialog, "  OK  ", height-2, width/2-6, TRUE);
 139     wrefresh(dialog);
 140     while (key != ESC && key != '\n' && key != ' ' && key != '\r')
 141       key = wgetch(dialog);
 142     if (key == '\r')
 143       key = '\n';
 144   }
 145   else {
 146     key = '\n';
 147     wrefresh(dialog);
 148   }
 149
 150   delwin(dialog);
 151   return (status);
 152 }
 153 /* End of dialog_msgbox() */