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annotate rogue5/scmisc.c @ 240:163bd1fd4766

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Super-Rogue: fix saving and restoring on Windows. The problem turned out to be that the save file wasn't being deleted because it was still open.
author John "Elwin" Edwards
date Sat, 12 Mar 2016 14:29:07 -0500
parents f502bf60e6e4
children
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rev   line source
33
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1 /*
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2 * copies of several routines needed for score
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3 *
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4 * @(#)smisc.c 4.7 (Berkeley) 02/05/99
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5 *
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6 * Rogue: Exploring the Dungeons of Doom
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7 * Copyright (C) 1980-1983, 1985, 1999 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 <stdio.h>
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14 # include <sys/types.h>
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15 # include <sys/stat.h>
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16 # include <ctype.h>
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17
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18 # define TRUE 1
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19 # define FALSE 0
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20 # define MAXSTR 80
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21 # define when break;case
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22 # define otherwise break;default
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23
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24 typedef struct {
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25 char *m_name;
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26 } MONST;
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27
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28 char *s_vowelstr();
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29
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30 char *lockfile = "/tmp/.fredlock";
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31
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32 char prbuf[MAXSTR]; /* buffer for sprintfs */
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33
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34 MONST monsters[] = {
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35 { "aquator" }, { "bat" }, { "centaur" }, { "dragon" }, { "emu" },
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36 { "venus flytrap" }, { "griffin" }, { "hobgoblin" }, { "ice monster" },
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37 { "jabberwock" }, { "kobold" }, { "leprechaun" }, { "medusa" },
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38 { "nymph" }, { "orc" }, { "phantom" }, { "quasit" }, { "rattlesnake" },
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39 { "snake" }, { "troll" }, { "ur-vile" }, { "vampire" }, { "wraith" },
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40 { "xeroc" }, { "yeti" }, { "zombie" }
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41 };
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42
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43 /*
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44 * s_lock_sc:
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45 * lock the score file. If it takes too long, ask the user if
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46 * they care to wait. Return TRUE if the lock is successful.
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47 */
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48 int
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49 s_lock_sc(void)
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50 {
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51 int cnt;
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52 struct stat sbuf;
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53
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54 over:
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55 close(8); /* just in case there are no files left */
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56 if (creat(lockfile, 0000) >= 0)
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57 return TRUE;
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58 for (cnt = 0; cnt < 5; cnt++)
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59 {
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60 md_sleep(1);
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61 if (creat(lockfile, 0000) >= 0)
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62 return TRUE;
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63 }
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64 if (stat(lockfile, &sbuf) < 0)
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65 {
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66 creat(lockfile, 0000);
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67 return TRUE;
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68 }
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69 if (time(NULL) - sbuf.st_mtime > 10)
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70 {
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71 if (md_unlink(lockfile) < 0)
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72 return FALSE;
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73 goto over;
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74 }
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75 else
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76 {
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77 printf("The score file is very busy. Do you want to wait longer\n");
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78 printf("for it to become free so your score can get posted?\n");
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79 printf("If so, type \"y\"\n");
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80 (void) fgets(prbuf, MAXSTR, stdin);
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81 if (prbuf[0] == 'y')
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82 for (;;)
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83 {
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84 if (creat(lockfile, 0000) >= 0)
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85 return TRUE;
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86 if (stat(lockfile, &sbuf) < 0)
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87 {
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88 creat(lockfile, 0000);
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89 return TRUE;
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90 }
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91 if (time(NULL) - sbuf.st_mtime > 10)
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92 {
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93 if (md_unlink(lockfile) < 0)
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94 return FALSE;
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95 }
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96 md_sleep(1);
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97 }
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98 else
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99 return FALSE;
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100 }
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101 }
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102
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103 /*
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104 * s_unlock_sc:
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105 * Unlock the score file
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106 */
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107 void
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108 s_unlock_sc(void)
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109 {
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110 md_unlink(lockfile);
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111 }
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112
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113 /*
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114 * s_encwrite:
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115 * Perform an encrypted write
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116 */
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117 void
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118 s_encwrite(char *start, size_t size, FILE *outf)
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119 {
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120 char *e1, *e2, fb;
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121 int temp;
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122
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123 e1 = encstr;
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124 e2 = statlist;
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125 fb = 0;
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126
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127 while (size--)
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128 {
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129 putc(*start++ ^ *e1 ^ *e2 ^ fb, outf);
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130 temp = *e1++;
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131 fb += temp * *e2++;
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132 if (*e1 == '\0')
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133 e1 = encstr;
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134 if (*e2 == '\0')
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135 e2 = statlist;
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136 }
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137 }
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138
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139 /*
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140 * s_encread:
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141 * Perform an encrypted read
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142 */
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143
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144 s_encread(char *start, size_t size, int inf)
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145 {
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146 char *e1, *e2, fb;
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147 int temp;
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148 int read_size;
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149
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150 fb = 0;
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151
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152 if ((read_size = read(inf, start, size)) == 0 || read_size == -1)
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153 return;
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154
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155 e1 = encstr;
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156 e2 = statlist;
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157
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158 while (size--)
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159 {
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160 *start++ ^= *e1 ^ *e2 ^ fb;
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161 temp = *e1++;
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162 fb += temp * *e2++;
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163 if (*e1 == '\0')
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164 e1 = encstr;
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165 if (*e2 == '\0')
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166 e2 = statlist;
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167 }
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168 }
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169
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170 /*
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171 * s_killname:
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172 * Convert a code to a monster name
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173 */
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174 char *
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175 s_killname(int monst, int doart)
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176 {
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177 char *sp;
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178 int article;
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179
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180 article = TRUE;
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181 switch (monst)
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182 {
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183 case 'a':
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184 sp = "arrow";
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185 when 'b':
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186 sp = "bolt";
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187 when 'd':
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188 sp = "dart";
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189 when 's':
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190 sp = "starvation";
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191 article = FALSE;
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192 when 'h':
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193 sp = "hypothermia";
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194 article = FALSE;
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195 otherwise:
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196 if (isupper(monst))
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197 sp = monsters[monst-'A'].m_name;
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198 else
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199 {
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200 sp = "God";
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201 article = FALSE;
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202 }
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203 }
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204 if (doart && article)
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205 sprintf(prbuf, "a%s ", s_vowelstr(sp));
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206 else
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207 prbuf[0] = '\0';
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208 strcat(prbuf, sp);
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209 return prbuf;
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210 }
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211
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212 /*
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213 * s_vowelstr:
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214 * For printfs: if string starts with a vowel, return "n" for an
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215 * "an".
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216 */
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217 char *
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218 s_vowelstr(char *str)
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219 {
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220 switch (*str)
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221 {
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222 case 'a': case 'A':
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223 case 'e': case 'E':
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224 case 'i': case 'I':
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225 case 'o': case 'O':
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226 case 'u': case 'U':
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227 return "n";
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228 default:
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229 return "";
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230 }
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231 }