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annotate rogue3/io.c @ 233:0990adf580ee

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Declare some function arguments as const. Some functions, mostly in fight.c, declared variables as pointers to const char but passed them to functions that took pointers to ordinary char. The strings did not actually get modified, so adding 'const' to the function definitions removed the warnings.
author John "Elwin" Edwards
date Sun, 06 Mar 2016 19:32:47 -0500
parents 527e2150eaf0
children
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1 /*
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2 * Various input/output functions
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3 *
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4 * @(#)io.c 3.10 (Berkeley) 6/15/81
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5 *
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6 * Rogue: Exploring the Dungeons of Doom
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7 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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8 * All rights reserved.
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9 *
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10 * See the file LICENSE.TXT for full copyright and licensing information.
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11 */
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12
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13 #include <stdlib.h>
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14 #include "curses.h"
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15 #include <ctype.h>
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16 #include <stdarg.h>
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17 #include <string.h>
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18 #include "machdep.h"
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19 #include "rogue.h"
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20
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21 /*
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22 * msg:
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23 * Display a message at the top of the screen.
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24 */
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25
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26 static char msgbuf[BUFSIZ];
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27 static int newpos = 0;
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28
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29 /*VARARGS1*/
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30 void
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31 msg(char *fmt, ...)
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32 {
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33 va_list ap;
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34 /*
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35 * if the string is "", just clear the line
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36 */
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37 if (*fmt == '\0')
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38 {
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39 wmove(cw, 0, 0);
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40 wclrtoeol(cw);
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41 mpos = 0;
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42 return;
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43 }
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44 /*
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45 * otherwise add to the message and flush it out
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46 */
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47 va_start(ap, fmt);
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48 doadd(fmt, ap);
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49 va_end(ap);
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50 endmsg();
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51 }
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52
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53 /*
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54 * add things to the current message
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55 */
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56 void
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57 addmsg(char *fmt, ...)
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58 {
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59 va_list ap;
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60
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61 va_start(ap, fmt);
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62 doadd(fmt, ap);
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63 va_end(ap);
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64 }
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65
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66 /*
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67 * Display a new msg (giving him a chance to see the previous one if it
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68 * is up there with the --More--)
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69 */
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70 void
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71 endmsg()
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72 {
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73 strncpy(huh, msgbuf, 80);
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74 huh[79] = 0;
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75
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76 if (mpos)
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77 {
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78 wmove(cw, 0, mpos);
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79 waddstr(cw, "--More--");
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80 draw(cw);
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81 wait_for(cw,' ');
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82 }
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83 mvwaddstr(cw, 0, 0, msgbuf);
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84 wclrtoeol(cw);
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85 mpos = newpos;
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86 newpos = 0;
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87 draw(cw);
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88 }
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89
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90 void
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91 doadd(char *fmt, va_list ap)
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92 {
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93 vsprintf(&msgbuf[newpos], fmt, ap);
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94 newpos = (int) strlen(msgbuf);
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95 }
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96
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97 /*
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98 * step_ok:
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99 * returns true if it is ok to step on ch
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100 */
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101
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102 int
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103 step_ok(int ch)
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104 {
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105 switch (ch)
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106 {
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107 case ' ':
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108 case '|':
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