src/message.c

   1 /* vim:tw=78:ts=8:sw=4:set ft=c:  */
   2 /*
   3     Copyright (C) 2002-2006 Ben Kibbey <bjk@arbornet.org>
   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 #include "common.h"
  29 #include "colors.h"
  30 #include "message.h"
  31
  32 int dump_message(const char *title, const char *prompt, int center,
  33         const char *extra_help, void(*custom_func)(void*), void *arg, int ckey,
  34         const char *format, ...)
  35 {
  36     WINDOW *win;
  37     PANEL *panel;
  38     char *line, **lines = NULL;
  39     int width = 0, height;
  40     int i, n, pos;
  41     int total = 0;
  42     char buf[LINE_MAX], *p;
  43     char *tmp;
  44     va_list ap;
  45
  46     va_start(ap, format);
  47
  48 #ifdef HAVE_VASPRINTF
  49     vasprintf(&line, format, ap);
  50 #else
  51     line = Malloc(LINE_MAX);
  52     vsnprintf(line, LINE_MAX, format, ap);
  53 #endif
  54
  55     va_end(ap);
  56
  57     /* Get the longest line to dynamically adjust the message box width. */
  58     for (i = n = pos = 0; line[i]; i++, n++) {
  59         if (line[i] == '\n') {
  60             if (n > pos)
  61                 pos = n;
  62
  63             n = 0;
  64         }
  65     }
  66
  67     pos = (n > pos) ? n : pos;
  68
  69     if (pos) {
  70         if (pos > MSG_WIDTH)
  71             width = MSG_WIDTH;
  72         else
  73             width = pos;
  74     }
  75
  76     for (i = n = pos = 0; line[i]; i++, n++, pos++) {
  77         if (line[i] == '\t')
  78             continue;
  79
  80         if (line[i] == '\n')
  81             pos = 0;
  82
  83         if (pos > width) {
  84             while (line[--i] != ' ')
  85                 buf[--n] = ' ';
  86
  87             buf[n++] = '\n';
  88             pos = 0;
  89         }
  90
  91         buf[n] = line[i];
  92     }
  93
  94     free(line);
  95
  96     buf[n] = '\0';
  97     p = buf;
  98
  99     while ((tmp = strsep(&p, "\n")) != NULL) {
 100         tmp = trim(tmp);
 101
 102         if (!*tmp)
 103             continue;
 104
 105         lines = Realloc(lines, (total + 2) * sizeof(char *));
 106         lines[total++] = strdup(tmp);
 107     }
 108
 109     lines[total] = NULL;
 110
 111     if (prompt && width < strlen(prompt))
 112         width = strlen(prompt);
 113
 114     if (extra_help && width < strlen(extra_help))
 115         width = strlen(extra_help);
 116
 117     if (title && width < strlen(title))
 118         width = strlen(title);
 119
 120     width += 2;
 121     height = total;
 122
 123     if (extra_help)
 124         height++;
 125
 126     win = newwin((title) ? height + 5 : height + 4, width,
 127             CALCPOSY(((title) ? height + 5 : height + 4)), CALCPOSX(width));
 128     panel = new_panel(win);
 129     wbkgd(win, CP_MESSAGE_WINDOW);
 130     draw_window_title(win, title, width, CP_MESSAGE_TITLE, CP_MESSAGE_BORDER);
 131
 132     for (i = 0; lines[i]; i++)
 133         mvwprintw(win, (title) ? 2 + i: 1 + i,
 134                 (center) ? CENTERX(width, lines[i]) : 1, "%s", lines[i]);
 135
 136     if (extra_help)
 137         draw_prompt(win, (title) ? height + 2 : height + 1, width, extra_help,
 138                 CP_MESSAGE_PROMPT);
 139
 140     draw_prompt(win, (title) ? height + 3 : height + 2, width, prompt,
 141             CP_MESSAGE_PROMPT);
 142
 143     while (1) {
 144         update_panels();
 145         doupdate();
 146
 147         n = wgetch(win);
 148
 149         if (!custom_func || n != ckey)
 150             break;
 151
 152         custom_func(arg);
 153     }
 154
 155     del_panel(panel);
 156     delwin(win);
 157
 158     for (i = 0; i < total; i++)
 159         free(lines[i]);
 160
 161     free(lines);
 162     return n;
 163 }