src/core/sys_console.c

   1 /************************************************************************
   2 * sys_console.c
   3 * voxelands - 3d voxel world sandbox game
   4 * Copyright (C) Lisa 'darkrose' Milne 2016 <lisa@ltmnet.com>
   5 *
   6 * This program is free software: you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License as published by
   8 * the Free Software Foundation, either version 3 of the License, or
   9 * (at your option) any later version.
  10 *
  11 * This program is distributed in the hope that it will be useful, but
  12 * WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  14 * See the 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, see <http://www.gnu.org/licenses/>
  18 ************************************************************************/
  19
  20 #include "common.h"
  21
  22 #ifdef WIN32
  23
  24 void sys_console_print(char* str, int newline)
  25 {
  26 }
  27
  28 void sys_console_printf(char* fmt, ...)
  29 {
  30 }
  31
  32 void sys_console_init()
  33 {
  34 }
  35
  36 void sys_console_exit()
  37 {
  38 }
  39
  40 #else
  41
  42 /* at present this is just an over-complicated printf
  43  * it should become an interective shell for dealing with the server */
  44
  45 #include <stdio.h>
  46 #include <stdarg.h>
  47 #include <string.h>
  48 #include <unistd.h>
  49 #include <sys/ioctl.h>
  50
  51 /* add a single line of text to the system console */
  52 static void sys_console_addline(char* str)
  53 {
  54         printf("%s\n",str);
  55 }
  56
  57 /* print text to the system console */
  58 void sys_console_print(char* str, int newline)
  59 {
  60         char buff[2048];
  61         int l;
  62         int i;
  63         int p;
  64         char* b;
  65         char* e;
  66         int max;
  67         int cols = 80;
  68 #ifdef TIOCGSIZE
  69         struct ttysize ts;
  70         ioctl(STDIN_FILENO, TIOCGSIZE, &ts);
  71         cols = ts.ts_cols;
  72 #else
  73 #ifdef TIOCGWINSZ
  74         struct winsize ts;
  75         ioctl(STDIN_FILENO, TIOCGWINSZ, &ts);
  76         cols = ts.ws_col;
  77 #endif
  78 #endif
  79         max = cols*4;
  80
  81         if (max > 2047) {
  82                 max = 2047;
  83                 cols = 511;
  84         }
  85
  86         b = str;
  87         while (b && b[0]) {
  88                 e = utf8_strchr(b,'\n',NULL);
  89                 if (e) {
  90                         l = e-b;
  91                         p = 1;
  92                         if (l > max) {
  93                                 e = b+max;
  94                                 l = max;
  95                                 p = 0;
  96                         }
  97                         strncpy(buff,b,l);
  98                         buff[l] = 0;
  99                         i = l;
 100                         l = utf8_strlen(buff);
 101                         while (l > cols) {
 102                                 utf8_dec(buff,&i);
 103                                 l = utf8_offset(buff,i);
 104                                 buff[i] = 0;
 105                         }
 106                         if (p)
 107                                 utf8_inc(b,&i);
 108                         b += i;
 109                 }else{
 110                         if (strlen(b) > max) {
 111                                 strncpy(buff,b,max);
 112                                 buff[max] = 0;
 113                                 i = l;
 114                                 l = utf8_strlen(buff);
 115                                 while (l > cols) {
 116                                         utf8_dec(buff,&i);
 117                                         l = utf8_offset(buff,i);
 118                                         buff[i] = 0;
 119                                 }
 120                                 b += strlen(buff);
 121                         }else{
 122                                 strcpy(buff,b);
 123                                 b = NULL;
 124                         }
 125                 }
 126                 sys_console_addline(buff);
 127         }
 128 }
 129
 130 /* print formatted text to the system console */
 131 void sys_console_printf(char* fmt, ...)
 132 {
 133         char buff[1024];
 134         va_list ap;
 135
 136         if (!fmt)
 137                 return;
 138
 139         va_start(ap, fmt);
 140
 141         if (vsnprintf(buff, 1024, fmt, ap) >= 1024) {
 142                 va_end(ap);
 143                 return;
 144         }
 145
 146         va_end(ap);
 147
 148         sys_console_print(buff, 0);
 149 }
 150
 151 void sys_console_init()
 152 {
 153         sys_console_print("\n\n",0);
 154         sys_console_print("___    ___                 __\n",0);
 155         sys_console_print("\\  \\  /  /______  __ ____ |  | ___   ____  ___  ______\n",0);
 156         sys_console_print(" \\  \\/  /  _  \\ \\/ // __ \\|  |/ _ \\ /    \\|   \\/  ___/\n",0);
 157         sys_console_print("  \\    /| |_| |    \\  ___/|  |  _  \\   |  \\ |  |___ \\\n",0);
 158         sys_console_print("   \\  / \\___  >_/\\  > __  >__|_/ \\  >__|  /___/____  >\n",0);
 159         sys_console_print("    \\/      \\/    \\/    \\/        \\/    \\/         \\/\n",0);
 160         sys_console_printf("\nVersion: %s\n",VERSION);
 161 }
 162
 163 void sys_console_exit()
 164 {
 165 }
 166
 167 #endif