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annotate srogue/io.c @ 229:50b89f165a34

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Use uniform return types for functions related to options. Functions for printing options now return void. Functions for setting options now return int. Argument types still vary, though converting all the option pointers to void* would be possible.
author John "Elwin" Edwards
date Sun, 06 Mar 2016 14:45:18 -0500
parents 94a0d9dd5ce1
children 70aa5808c782
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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 9.0 (rdk) 7/17/84
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5 *
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6 * Super-Rogue
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7 * Copyright (C) 1984 Robert D. Kindelberger
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8 * All rights reserved.
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9 *
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10 * Based on "Rogue: Exploring the Dungeons of Doom"
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11 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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12 * All rights reserved.
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13 *
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14 * See the file LICENSE.TXT for full copyright and licensing information.
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15 */
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16
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17 #include <stdarg.h>
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18 #include <ctype.h>
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19 #include <string.h>
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20 #include "rogue.h"
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21 #include "rogue.ext"
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22
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23 void doadd(char *fmt, va_list ap);
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24
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25 /*
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26 * msg:
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27 * Display a message at the top of the screen.
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28 */
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29 static char msgbuf[BUFSIZ];
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30 static int newpos = 0;
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31
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32 void
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33 msg(char *fmt, ...)
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34 {
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35 va_list ap;
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36 /*
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37 * if the string is "", just clear the line
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38 */
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39 if (*fmt == '\0') {
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40 wmove(cw, 0, 0);
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41 wclrtoeol(cw);
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42 mpos = 0;
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43 return;
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44 }
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45 /*
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46 * otherwise add to the message and flush it out
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47 */
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48 va_start(ap, fmt);
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49 doadd(fmt, ap);
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50 va_end(ap);
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51 endmsg();
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52 }
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53
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54 /*
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55 * addmsg:
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56 * Add things to the current message
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57 */
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58 void
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59 addmsg(char *fmt, ...)
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60 {
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61 va_list ap;
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62
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63 va_start(ap, fmt);
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64 doadd(fmt, ap);
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65 va_end(ap);
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66 }
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67
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68 /*
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69 * endmsg:
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70 * Display a new msg, giving him a chance to see the
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71 * previous one if it is up there with the --More--
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72 */
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73 void
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74 endmsg(void)
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75 {
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76 strcpy(huh, msgbuf);
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77 if (mpos > 0) {
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78 wmove(cw, 0, mpos);
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79 waddstr(cw, morestr);
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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 /*
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91 * doadd:
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92 * Perform a printf into a buffer
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93 */
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94 void
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95 doadd(char *fmt, va_list ap)
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96 {
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97 vsprintf(&msgbuf[newpos], fmt, ap);
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98 newpos = strlen(msgbuf);
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99 }
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100
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101 /*
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102 * step_ok:
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103 * Returns TRUE if it is ok to step on ch
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104 */
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105 bool