crawl-ref/source/ng-input.cc

   1 #include "AppHdr.h"
   2
   3 #include "ng-input.h"
   4
   5 #include "cio.h"
   6 #include "files.h"
   7 #include "menu.h"
   8 #include "options.h"
   9 #include "stuff.h"
  10
  11 extern std::string init_file_error; // defined in main.cc
  12
  13 // Eventually, this should be something more grand. {dlb}
  14 void opening_screen(void)
  15 {
  16     std::string msg =
  17     "<yellow>Hello, welcome to " CRAWL " " + Version::Long() + "!</yellow>\n"
  18     "<brown>(c) Copyright 1997-2002 Linley Henzell, "
  19     "2002-2010 Crawl DevTeam\n"
  20     "Read the instructions for legal details."
  21     "</brown> " ;
  22
  23     const bool init_found = init_file_error.empty();
  24
  25     if (!init_found)
  26         msg += "<lightred>(No init file ";
  27     else
  28         msg += "<lightgrey>(Read options from ";
  29
  30     if (init_found)
  31     {
  32 #ifdef DGAMELAUNCH
  33         // For dgl installs, show only the last segment of the .crawlrc
  34         // file name so that we don't leak details of the directory
  35         // structure to (untrusted) users.
  36         msg += get_base_filename(Options.filename);
  37 #else
  38         msg += Options.filename;
  39 #endif
  40         msg += ".)";
  41     }
  42     else
  43     {
  44         msg += init_file_error;
  45         msg += ", using defaults.)";
  46     }
  47
  48     msg += "\n";
  49
  50     formatted_string::parse_string(msg).display();
  51     textcolor(LIGHTGREY);
  52 }
  53
  54 static void _show_name_prompt(int where)
  55 {
  56     cgotoxy(1, where);
  57     textcolor(CYAN);
  58
  59     cprintf("\nWhat is your name today? ");
  60
  61     textcolor(LIGHTGREY);
  62 }
  63
  64 bool is_good_name(const std::string& name, bool blankOK, bool verbose)
  65 {
  66     // verification begins here {dlb}:
  67     if (name.empty())
  68     {
  69         if (blankOK)
  70             return (true);
  71
  72         if (verbose)
  73             cprintf("\nThat's a silly name!\n");
  74         return (false);
  75     }
  76
  77     return (validate_player_name(name, verbose));
  78 }
  79
  80 static bool _read_player_name(std::string &name)
  81 {
  82     const int name_x = wherex(), name_y = wherey();
  83     char buf[kNameLen + 1];
  84     // XXX: Prompt displays garbage otherwise, but don't really know why.
  85     //      Other places don't do this. --rob
  86     buf[0] = '\0';
  87     line_reader reader(buf, sizeof(buf));
  88
  89     while (true)
  90     {
  91         cgotoxy(name_x, name_y);
  92         if (name_x <= 80)
  93             cprintf("%-*s", 80 - name_x + 1, "");
  94
  95         cgotoxy(name_x, name_y);
  96         int ret = reader.read_line(false);
  97         if (!ret)
  98         {
  99             name = buf;
 100             return (true);
 101         }
 102
 103         if (key_is_escape(ret))
 104             return (false);
 105
 106         // Go back and prompt the user.
 107     }
 108 }
 109
 110 // Reads a valid name from the player, writing it to ng.name.
 111 void enter_player_name(newgame_def *ng)
 112 {
 113     int prompt_start = wherey();
 114
 115     do
 116     {
 117         // Prompt for a new name if current one unsatisfactory {dlb}:
 118         _show_name_prompt(prompt_start);
 119
 120         // If the player wants out, we bail out.
 121         if (!_read_player_name(ng->name))
 122             end(0);
 123         trim_string(ng->name);
 124     }
 125     while (!is_good_name(ng->name, false, true));
 126 }
 127
 128 bool validate_player_name(const std::string &name, bool verbose)
 129 {
 130 #if defined(TARGET_OS_DOS) || defined(TARGET_OS_WINDOWS)
 131     // Quick check for CON -- blows up real good under DOS/Windows.
 132     if (stricmp(name.c_str(), "con") == 0
 133         || stricmp(name.c_str(), "nul") == 0
 134         || stricmp(name.c_str(), "prn") == 0
 135         || strnicmp(name.c_str(), "LPT", 3) == 0)
 136     {
 137         if (verbose)
 138             cprintf("\nSorry, that name gives your OS a headache.\n");
 139         return (false);
 140     }
 141 #endif
 142
 143     if (strwidth(name) > kNameLen)
 144     {
 145         if (verbose)
 146             cprintf("\nThat name is too long.\n");
 147         return (false);
 148     }
 149
 150     for (unsigned int i = 0; i < name.length(); i++)
 151     {
 152         char c = name[i];
 153         // Note that this includes systems which may be using the
 154         // packaging system.  The packaging system is very simple
 155         // and doesn't take the time to escape every character that
 156         // might be a problem for some random shell or OS... so we
 157         // play it very conservative here.  -- bwr
 158         // Accented 8-bit letters are probably harmless here.  -- 1KB
 159         if (!isalnum(c) && c != '-' && c != '.' && c != '_' && c != ' ')
 160         {
 161             if (verbose)
 162             {
 163                 cprintf("\n"
 164                         "Alpha-numerics, spaces, dashes, periods "
 165                         "and underscores only, please."
 166                         "\n");
 167             }
 168             return (false);
 169         }
 170     }
 171
 172     return (true);
 173 }