Mercurial > hg > early-roguelike
annotate arogue7/save.c @ 279:d3968e9cb98d
Use C stdio functions for score files and save files.
Switching from Unix file descriptor operations to C standard FILE*
functions will reduce portability problems.
author | John "Elwin" Edwards |
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date | Fri, 15 Sep 2017 19:57:54 -0400 |
parents | 3d4252fa2ed3 |
children | 70aa5808c782 |
rev | line source |
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1 /* |
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2 * save.c - save and restore routines |
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3 * |
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4 * Advanced Rogue |
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5 * Copyright (C) 1984, 1985, 1986 Michael Morgan, Ken Dalka and AT&T |
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6 * All rights reserved. |
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7 * |
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8 * Based on "Rogue: Exploring the Dungeons of Doom" |
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9 * Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman |
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10 * All rights reserved. |
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11 * |
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12 * See the file LICENSE.TXT for full copyright and licensing information. |
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13 */ |
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14 |
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15 /* |
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16 * save and restore routines |
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17 * |
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18 */ |
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19 |
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20 #include "curses.h" |
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21 #include <ctype.h> |
126 | 22 #include <stdlib.h> |
23 #include <string.h> | |
125
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24 #include <sys/types.h> |
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25 #include <sys/stat.h> |
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26 #include <signal.h> |
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27 #include "rogue.h" |
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28 #include <fcntl.h> |
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29 #include <errno.h> |
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30 #include "mach_dep.h" |
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31 #ifdef PC7300 |
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32 #include "sys/window.h" |
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33 extern struct uwdata wdata; |
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34 #endif |
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35 |
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36 #if u370 || uts |
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37 #define ENCREAD(b,n,f) read(md_fileno(f),b,n) |
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38 #define ENCWRITE(b,n,f) write(md_fileno(f),b,n) |
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39 #endif |
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40 #ifndef ENCREAD |
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41 #define ENCREAD encread |
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42 #define ENCWRITE encwrite |
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43 #endif |
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44 |
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45 bool save_file(FILE *savef); |
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46 |
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47 typedef struct stat STAT; |
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48 |
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49 extern char version[], encstr[]; |
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50 /* extern bool _endwin; */ |
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51 extern int errno; |
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52 |
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53 STAT sbuf; |
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54 |
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55 bool |
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56 save_game(void) |
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57 { |
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58 FILE *savefi = NULL; |
125
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59 register int c; |
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60 char buf[LINELEN]; |
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61 |
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62 /* |
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63 * get file name |
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64 */ |
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65 mpos = 0; |
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66 if (file_name[0] != '\0') |
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67 { |
128 | 68 if (use_savedir) |
69 msg("Save game? "); | |
70 else | |
71 msg("Save file (%s)? ", file_name); | |
125
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72 do |
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73 { |
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74 c = readchar(); |
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75 if (c == ESCAPE) return(0); |
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76 } while (c != 'n' && c != 'N' && c != 'y' && c != 'Y'); |
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77 mpos = 0; |
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78 if (c == 'y' || c == 'Y') |
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79 { |
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80 msg("File name: %s", file_name); |
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81 goto gotfile; |
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82 } |
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83 } |
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84 |
128 | 85 if (use_savedir) |
86 { | |
87 msg(""); | |
88 return FALSE; | |
89 } | |
90 | |
125
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91 do |
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92 { |
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93 msg("File name: "); |
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94 mpos = 0; |
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95 buf[0] = '\0'; |
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96 if (get_str(buf, msgw) == QUIT) |
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97 { |
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98 msg(""); |
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99 return FALSE; |
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100 } |
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101 strcpy(file_name, buf); |
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102 gotfile: |
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103 if ((savefi = fopen(file_name, "w")) == NULL) |
128 | 104 { |
125
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105 msg(strerror(errno)); /* fake perror() */ |
128 | 106 if (use_savedir) |
107 return FALSE; | |
108 } | |
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109 } while (savefi == NULL); |
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110 |
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111 /* |
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112 * write out encrpyted file (after a stat) |
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113 */ |
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114 if (save_file(savefi) == FALSE) { |
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115 msg("Cannot create save file."); |
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116 md_unlink(file_name); |
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117 return(FALSE); |
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118 } |
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119 else return(TRUE); |
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120 } |
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121 |
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122 /* |
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123 * automatically save a file. This is used if a HUP signal is |
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124 * recieved |
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125 */ |
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126 void |
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127 auto_save(int sig) |
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128 { |
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129 FILE *savefi; |
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130 register int i; |
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131 |
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132 for (i = 0; i < NSIG; i++) |
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133 signal(i, SIG_IGN); |
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134 if (file_name[0] != '\0' && |
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135 pstats.s_hpt > 0 && |
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136 (savefi = fopen(file_name, "w")) != NULL) |
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137 save_file(savefi); |
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138 endwin(); |
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139 #ifdef PC7300 |
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140 endhardwin(); |
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141 #endif |
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142 exit(1); |
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143 } |
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144 |
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145 /* |
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146 * write the saved game on the file |
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147 */ |
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148 bool |
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149 save_file(FILE *savef) |
125
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150 { |
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151 register unsigned num_to_write, num_written; |
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152 int ret; |
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153 |
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154 wmove(cw, lines-1, 0); |
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155 draw(cw); |
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156 fseek(savef, 0L, SEEK_SET); |
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157 stat(file_name, &sbuf); |
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158 num_to_write = strlen(version) + 1; |
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159 num_written = ENCWRITE(version, num_to_write, savef); |
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160 sprintf(prbuf,"%d x %d\n", LINES, COLS); |
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161 ENCWRITE(prbuf,80,savef); |
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162 ret = rs_save_file(savef); |
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163 fclose(savef); |
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164 if (num_to_write == num_written && ret == 0) return(TRUE); |
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165 else return(FALSE); |
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166 } |
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167 |
219
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168 bool |
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169 restore(char *file, char *envp[]) |
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170 { |
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171 FILE *inf; |
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172 extern char **environ; |
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173 char buf[LINELEN]; |
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174 STAT sbuf2; |
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175 int oldcol, oldline; /* Old number of columns and lines */ |
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176 |
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177 if (strcmp(file, "-r") == 0) |
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178 file = file_name; |
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179 if ((inf = fopen(file, "r")) == NULL) |
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180 { |
128 | 181 if (use_savedir && errno == ENOENT) |
182 { | |
183 return TRUE; | |
184 } | |
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185 perror(file); |
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186 return FALSE; |
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187 } |
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188 |
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189 fflush(stdout); |
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190 ENCREAD(buf, strlen(version) + 1, inf); |
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191 if (strcmp(buf, version) != 0) |
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192 { |
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193 printf("Sorry, saved game is out of date.\n"); |
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194 return FALSE; |
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195 } |
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196 |
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197 /* |
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198 * Get the lines and columns from the previous game |
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199 */ |
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200 |
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201 ENCREAD(buf, 80, inf); |
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202 sscanf(buf, "%d x %d\n", &oldline, &oldcol); |
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203 stat(file, &sbuf2); |
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204 fflush(stdout); |
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205 |
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206 initscr(); |
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207 |
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208 if (COLS < oldcol || LINES < oldline) { |
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209 endwin(); |
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210 printf("Cannot restart the game on a smaller screen.\n"); |
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211 return FALSE; |
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212 } |
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213 |
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214 setup(); |
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215 /* |
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216 * Set up windows |
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217 */ |
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218 cw = newwin(lines, cols, 0, 0); |
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219 mw = newwin(lines, cols, 0, 0); |
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220 hw = newwin(lines, cols, 0, 0); |
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221 msgw = newwin(4, cols, 0, 0); |
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222 |
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223 keypad(cw,1); |
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224 keypad(msgw,1); |
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225 |
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226 if (rs_restore_file(inf) != 0) |
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227 { |
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228 printf("Cannot restore file\n"); |
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229 fclose(inf); |
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230 return(FALSE); |
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231 } |
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232 |
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233 cols = COLS; |
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234 lines = LINES; |
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235 if (cols > 85) cols = 85; |
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236 if (lines > 24) lines = 24; |
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237 |
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238 mpos = 0; |
168
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165
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239 msg(""); |
165
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240 /*msg("%s: %s", file, ctime(&sbuf2.st_mtime));*/ |
125
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241 |
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242 /* |
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243 * defeat multiple restarting from the same place |
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244 */ |
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245 if (!wizard && md_unlink_open_file(file, inf) < 0) { |
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246 printf("Cannot unlink file\n"); |
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247 return FALSE; |
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248 } |
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249 |
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250 environ = envp; |
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251 strcpy(file_name, file); |
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252 setup(); |
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253 clearok(curscr, TRUE); |
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254 touchwin(cw); |
252
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255 srand(md_random_seed()); |
125
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256 playit(); |
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257 /*NOTREACHED*/ |
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258 return(0); |
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259 } |
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260 |
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261 #define ENCWBSIZ 1024 |
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262 /* |
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263 * perform an encrypted write |
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264 */ |
219
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265 int |
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266 encwrite(char *start, unsigned int size, FILE *outf) |
125
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267 { |
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268 register char *ep; |
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269 register int i = 0; |
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270 int num_written = 0; |
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271 auto char buf[ENCWBSIZ]; |
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272 |
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273 ep = encstr; |
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274 |
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275 while (size--) |
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276 { |
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277 buf[i++] = *start++ ^ *ep++ ; |
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278 if (*ep == '\0') |
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279 ep = encstr; |
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280 |
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281 if (i == ENCWBSIZ || size == 0) { |
279
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282 if (fwrite(buf, 1, (unsigned)i, outf) < i) |
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283 return(num_written); |
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284 else { |
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285 num_written += i; |
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286 i = 0; |
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287 } |
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288 } |
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289 } |
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290 return(num_written); |
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291 } |
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292 |
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293 /* |
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294 * perform an encrypted read |
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295 */ |
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296 int |
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297 encread(char *start, unsigned int size, FILE *inf) |
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298 { |
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299 register char *ep; |
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300 register int read_size; |
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301 |
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302 if ((read_size = fread(start, 1, size, inf)) == 0) |
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303 return read_size; |
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304 |
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305 ep = encstr; |
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306 |
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307 size = read_size; |
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308 while (size--) |
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309 { |
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310 *start++ ^= *ep++; |
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311 if (*ep == '\0') |
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312 ep = encstr; |
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313 } |
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314 return read_size; |
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315 } |