src/message.c

   1 /* vim:tw=78:ts=8:sw=4:set ft=c:  */
   2 /*
   3     Copyright (C) 2002-2006 Ben Kibbey <bjk@luxsci.net>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18 */
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <stdarg.h>
  22 #include <string.h>
  23
  24 #ifdef HAVE_CONFIG_H
  25 #include <config.h>
  26 #endif
  27
  28 #ifdef HAVE_NCURSES_H
  29 #include <ncurses.h>
  30 #endif
  31
  32 #ifdef HAVE_PANEL_H
  33 #include <panel.h>
  34 #endif
  35
  36 #ifdef HAVE_LIMITS_H
  37 #include <limits.h>
  38 #endif
  39
  40 #include "chess.h"
  41 #include "conf.h"
  42 #include "window.h"
  43 #include "colors.h"
  44 #include "misc.h"
  45 #include "message.h"
  46
  47 #ifdef WITH_DMALLOC
  48 #include <dmalloc.h>
  49 #endif
  50
  51 int dump_message(const char *title, const char *prompt, int center,
  52         const char *extra_help, void(*custom_func)(void*), void *arg, int ckey,
  53         const char *format, ...)
  54 {
  55     WINDOW *win;
  56     PANEL *panel;
  57     char *line, **lines = NULL;
  58     int width = 0, height;
  59     int i, n, pos;
  60     int total = 0;
  61     char buf[LINE_MAX], *p;
  62     char *tmp;
  63     va_list ap;
  64
  65     va_start(ap, format);
  66
  67 #ifdef HAVE_VASPRINTF
  68     vasprintf(&line, format, ap);
  69 #else
  70     line = Malloc(LINE_MAX);
  71     vsnprintf(line, LINE_MAX, format, ap);
  72 #endif
  73
  74     va_end(ap);
  75
  76     /* Get the longest line to dynamically adjust the message box width. */
  77     for (i = n = pos = 0; line[i]; i++, n++) {
  78         if (line[i] == '\n') {
  79             if (n > pos)
  80                 pos = n;
  81
  82             n = 0;
  83         }
  84     }
  85
  86     pos = (n > pos) ? n : pos;
  87
  88     if (pos) {
  89         if (pos > MSG_WIDTH)
  90             width = MSG_WIDTH;
  91         else
  92             width = pos;
  93     }
  94
  95     for (i = n = pos = 0; line[i]; i++, n++, pos++) {
  96         if (line[i] == '\t')
  97             continue;
  98
  99         if (line[i] == '\n')
 100             pos = 0;
 101
 102         if (pos > width) {
 103             while (line[--i] != ' ')
 104                 buf[--n] = ' ';
 105
 106             buf[n++] = '\n';
 107             pos = 0;
 108         }
 109
 110         buf[n] = line[i];
 111     }
 112
 113     free(line);
 114
 115     buf[n] = '\0';
 116     p = buf;
 117
 118     while ((tmp = strsep(&p, "\n")) != NULL) {
 119         tmp = trim(tmp);
 120
 121         if (!*tmp)
 122             continue;
 123
 124         lines = Realloc(lines, (total + 2) * sizeof(char *));
 125         lines[total++] = strdup(tmp);
 126     }
 127
 128     lines[total] = NULL;
 129
 130     if (prompt && width < strlen(prompt))
 131         width = strlen(prompt);
 132
 133     if (extra_help && width < strlen(extra_help))
 134         width = strlen(extra_help);
 135
 136     if (title && width < strlen(title))
 137         width = strlen(title);
 138
 139     width += 2;
 140     height = total;
 141
 142     if (extra_help)
 143         height++;
 144
 145     win = newwin((title) ? height + 5 : height + 4, width,
 146             CALCPOSY(((title) ? height + 5 : height + 4)), CALCPOSX(width));
 147     keypad(win, TRUE);
 148     panel = new_panel(win);
 149     wbkgd(win, CP_MESSAGE_WINDOW);
 150     draw_window_title(win, title, width, CP_MESSAGE_TITLE, CP_MESSAGE_BORDER);
 151
 152     for (i = 0; lines[i]; i++)
 153         mvwprintw(win, (title) ? 2 + i: 1 + i,
 154                 (center) ? CENTERX(width, lines[i]) : 1, "%s", lines[i]);
 155
 156     if (extra_help)
 157         draw_prompt(win, (title) ? height + 2 : height + 1, width, extra_help,
 158                 CP_MESSAGE_PROMPT);
 159
 160     draw_prompt(win, (title) ? height + 3 : height + 2, width, prompt,
 161             CP_MESSAGE_PROMPT);
 162
 163     while (1) {
 164         update_panels();
 165         doupdate();
 166
 167         n = wgetch(win);
 168
 169         if (!custom_func || n != ckey)
 170             break;
 171
 172         custom_func(arg);
 173     }
 174
 175     del_panel(panel);
 176     delwin(win);
 177
 178     for (i = 0; i < total; i++)
 179         free(lines[i]);
 180
 181     free(lines);
 182     return n;
 183 }