Mercurial > hg > early-roguelike
annotate arogue7/save.c @ 126:b786053d2f37
arogue7: add missing header includes.
author | John "Elwin" Edwards |
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date | Fri, 08 May 2015 16:45:41 -0400 |
parents | adfa37e67084 |
children | c697782a9b37 |
rev | line source |
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125
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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,fd) read(fd,b,n) |
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38 #define ENCWRITE(b,n,fd) write(fd,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 typedef struct stat STAT; |
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46 |
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47 extern char version[], encstr[]; |
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48 /* extern bool _endwin; */ |
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49 extern int errno; |
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50 |
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51 STAT sbuf; |
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52 |
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53 bool |
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54 save_game() |
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55 { |
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56 register int savefd; |
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57 register int c; |
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58 char buf[LINELEN]; |
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59 |
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60 /* |
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61 * get file name |
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62 */ |
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63 mpos = 0; |
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64 if (file_name[0] != '\0') |
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65 { |
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66 msg("Save file (%s)? ", file_name); |
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67 do |
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68 { |
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69 c = readchar(); |
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70 if (c == ESCAPE) return(0); |
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71 } while (c != 'n' && c != 'N' && c != 'y' && c != 'Y'); |
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72 mpos = 0; |
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73 if (c == 'y' || c == 'Y') |
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74 { |
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75 msg("File name: %s", file_name); |
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76 goto gotfile; |
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77 } |
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78 } |
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79 |
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80 do |
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81 { |
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82 msg("File name: "); |
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83 mpos = 0; |
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84 buf[0] = '\0'; |
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85 if (get_str(buf, msgw) == QUIT) |
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86 { |
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87 msg(""); |
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88 return FALSE; |
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89 } |
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90 strcpy(file_name, buf); |
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91 gotfile: |
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92 if ((savefd = open(file_name, O_WRONLY|O_CREAT|O_TRUNC,0666)) < 0) |
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93 msg(strerror(errno)); /* fake perror() */ |
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94 } while (savefd < 0); |
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95 |
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96 /* |
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97 * write out encrpyted file (after a stat) |
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98 */ |
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99 if (save_file(savefd) == FALSE) { |
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100 msg("Cannot create save file."); |
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101 unlink(file_name); |
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102 return(FALSE); |
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103 } |
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104 else return(TRUE); |
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105 } |
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106 |
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107 /* |
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108 * automatically save a file. This is used if a HUP signal is |
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109 * recieved |
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110 */ |
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111 void |
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112 auto_save(sig) |
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113 int sig; |
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114 { |
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115 register int savefd; |
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116 register int i; |
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117 |
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118 for (i = 0; i < NSIG; i++) |
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119 signal(i, SIG_IGN); |
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120 if (file_name[0] != '\0' && |
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121 pstats.s_hpt > 0 && |
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122 (savefd = open(file_name, O_WRONLY|O_CREAT|O_TRUNC, 0600)) >= 0) |
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123 save_file(savefd); |
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124 endwin(); |
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125 #ifdef PC7300 |
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126 endhardwin(); |
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127 #endif |
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128 exit(1); |
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129 } |
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130 |
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131 /* |
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132 * write the saved game on the file |
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133 */ |
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134 bool |
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135 save_file(savefd) |
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136 register int savefd; |
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137 { |
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138 register unsigned num_to_write, num_written; |
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139 FILE *savef; |
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140 int ret; |
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141 |
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142 wmove(cw, lines-1, 0); |
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143 draw(cw); |
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144 lseek(savefd, 0L, 0); |
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145 fstat(savefd, &sbuf); |
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146 num_to_write = strlen(version) + 1; |
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147 num_written = ENCWRITE(version, num_to_write, savefd); |
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148 sprintf(prbuf,"%d x %d\n", LINES, COLS); |
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149 ENCWRITE(prbuf,80,savefd); |
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150 savef = (FILE *) fdopen(savefd,"wb"); |
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151 ret = rs_save_file(savef); |
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152 fclose(savef); |
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153 if (num_to_write == num_written && ret == 0) return(TRUE); |
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154 else return(FALSE); |
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155 } |
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156 |
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157 restore(file, envp) |
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158 register char *file; |
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159 char **envp; |
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160 { |
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161 register int inf; |
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162 extern char **environ; |
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163 char buf[LINELEN]; |
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164 STAT sbuf2; |
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165 int oldcol, oldline; /* Old number of columns and lines */ |
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166 |
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167 if (strcmp(file, "-r") == 0) |
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168 file = file_name; |
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169 if ((inf = open(file, 0)) < 0) |
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170 { |
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171 perror(file); |
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172 return FALSE; |
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173 } |
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174 |
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175 fflush(stdout); |
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176 ENCREAD(buf, strlen(version) + 1, inf); |
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177 if (strcmp(buf, version) != 0) |
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178 { |
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179 printf("Sorry, saved game is out of date.\n"); |
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180 return FALSE; |
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181 } |
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182 |
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183 /* |
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184 * Get the lines and columns from the previous game |
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185 */ |
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186 |
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187 ENCREAD(buf, 80, inf); |
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188 sscanf(buf, "%d x %d\n", &oldline, &oldcol); |
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189 fstat(inf, &sbuf2); |
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190 fflush(stdout); |
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191 |
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192 initscr(); |
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193 |
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194 if (COLS < oldcol || LINES < oldline) { |
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195 endwin(); |
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196 printf("Cannot restart the game on a smaller screen.\n"); |
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197 return FALSE; |
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198 } |
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199 |
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200 setup(); |
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201 /* |
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202 * Set up windows |
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203 */ |
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204 cw = newwin(lines, cols, 0, 0); |
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205 mw = newwin(lines, cols, 0, 0); |
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206 hw = newwin(lines, cols, 0, 0); |
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207 msgw = newwin(4, cols, 0, 0); |
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208 |
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209 keypad(cw,1); |
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210 keypad(msgw,1); |
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211 |
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212 if (rs_restore_file(inf) != 0) |
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213 { |
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214 printf("Cannot restore file\n"); |
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215 close(inf); |
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216 return(FALSE); |
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217 } |
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218 |
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219 cols = COLS; |
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220 lines = LINES; |
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221 if (cols > 85) cols = 85; |
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222 if (lines > 24) lines = 24; |
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223 |
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224 mpos = 0; |
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225 mvwprintw(msgw, 0, 0, "%s: %s", file, ctime(&sbuf2.st_mtime)); |
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226 |
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227 /* |
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228 * defeat multiple restarting from the same place |
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229 */ |
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230 if (!wizard && md_unlink_open_file(file, inf) < 0) { |
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231 printf("Cannot unlink file\n"); |
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232 return FALSE; |
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233 } |
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234 |
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235 environ = envp; |
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236 strcpy(file_name, file); |
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237 setup(); |
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238 clearok(curscr, TRUE); |
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239 touchwin(cw); |
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240 srand(getpid()); |
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241 playit(); |
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242 /*NOTREACHED*/ |
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243 return(0); |
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244 } |
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245 |
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246 #define ENCWBSIZ 1024 |
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247 /* |
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248 * perform an encrypted write |
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249 */ |
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250 encwrite(start, size, outf) |
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251 register char *start; |
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252 register unsigned size; |
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253 register int outf; |
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254 { |
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255 register char *ep; |
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256 register int i = 0; |
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257 int num_written = 0; |
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258 auto char buf[ENCWBSIZ]; |
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259 |
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260 ep = encstr; |
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261 |
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262 while (size--) |
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263 { |
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264 buf[i++] = *start++ ^ *ep++ ; |
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265 if (*ep == '\0') |
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266 ep = encstr; |
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267 |
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268 if (i == ENCWBSIZ || size == 0) { |
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269 if (write(outf, buf, (unsigned)i) < i) |
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270 return(num_written); |
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271 else { |
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272 num_written += i; |
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273 i = 0; |
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274 } |
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275 } |
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276 } |
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277 return(num_written); |
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278 } |
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279 |
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280 /* |
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281 * perform an encrypted read |
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282 */ |
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283 encread(start, size, inf) |
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284 register char *start; |
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285 register unsigned size; |
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286 register int inf; |
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287 { |
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288 register char *ep; |
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289 register int read_size; |
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290 |
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291 if ((read_size = read(inf, start, size)) == -1 || read_size == 0) |
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292 return read_size; |
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293 |
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294 ep = encstr; |
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295 |
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296 size = read_size; |
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297 while (size--) |
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298 { |
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299 *start++ ^= *ep++; |
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300 if (*ep == '\0') |
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301 ep = encstr; |
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302 } |
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303 return read_size; |
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304 } |