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annotate xrogue/save.c @ 164:49af2fd0bb0c

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Move some autotools files to where configure can find them. rogue5 uses config.guess and config.sub to find the canonical system names. The configure script expects them to be in the same directory as install-sh. So they have been relocated to the top level. This is a quick and dirty fix. The eventual plan is to relocate them to /dev/null. I also suspect they should be used to set HOST, not TARGET. Rogue is not a cross-compiler.
author John "Elwin" Edwards
date Tue, 16 Jun 2015 11:44:49 -0400
parents 443c8bd3e290
children 6e6fb0955095
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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 XRogue: Expeditions into the Dungeons of Doom
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5 Copyright (C) 1991 Robert Pietkivitch
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6 All rights reserved.
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7
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8 Based on "Advanced Rogue"
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9 Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka and AT&T
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10 All rights reserved.
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11
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12 Based on "Rogue: Exploring the Dungeons of Doom"
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13 Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
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14 All rights reserved.
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15
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16 See the file LICENSE.TXT for full copyright and licensing information.
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17 */
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18
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19 #include <curses.h>
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20 #include <ctype.h>
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21 #include <string.h>
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22 #include <sys/types.h>
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23 #include <signal.h>
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24 #include <fcntl.h>
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25 #include <errno.h>
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26 #include "rogue.h"
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27 #include "mach_dep.h"
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28
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29 extern char version[];
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30 extern unsigned char encstr[];
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31 extern int big_endian;
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32
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33 bool
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34 save_game()
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35 {
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36 register FILE *savef;
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37 register int c;
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38 char buf[LINELEN];
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39
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40 /*
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41 * get file name
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42 */
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43 mpos = 0;
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44 if (file_name[0] != '\0')
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45 {
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46 if (use_savedir)
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47 msg("Save game? ");
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48 else
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49 msg("Save file (%s)? ", file_name);
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50 do
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51 {
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52 c = wgetch(cw);
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53 if (c == ESC) return(0);
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54 } while (c != 'n' && c != 'N' && c != 'y' && c != 'Y');
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55 mpos = 0;
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56 if (c == 'y' || c == 'Y')
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57 {
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58 msg("File name: %s", file_name);
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59 goto gotfile;
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60 }
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61 }
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62 else
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63 goto gotfile; /* must save to file restored from */
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64
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65 if (use_savedir) {
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66 msg("");
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67 return FALSE;
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68 }
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69
133
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70 do
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71 {
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72 msg("File name: ");
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73 mpos = 0;
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74 buf[0] = '\0';
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75 if (get_str(buf, msgw) == QUIT)
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76 {
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77 msg("");
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78 return FALSE;
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79 }
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80 strcpy(file_name, buf);
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81 gotfile:
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82
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83 if ((savef = fopen(file_name, "wb")) == NULL) {
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84 msg(strerror(errno));
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85 if (use_savedir)
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86 return FALSE;
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87 }
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88 } while (savef == NULL);
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89
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90 msg("");
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91 /*
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92 * write out encrpyted file
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93 */
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94 if (save_file(savef) == FALSE) {
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95 fclose(savef);
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96 msg("Cannot create save file.");
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97 unlink(file_name);
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98 return(FALSE);
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99 }
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100 fclose(savef);
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101 return(TRUE);
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102 }
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103
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104 /*
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105 * automatically save a file. This is used if a HUP signal is recieved
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106 */
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107
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108 void
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109 auto_save(int sig)
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110 {
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111 register FILE *savef = NULL;
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112 register int i;
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113 NOOP(sig);
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114 for (i = 0; i < NSIG; i++)
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115 signal(i, SIG_IGN);
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116 if (file_name[0] != '\0' &&
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117 pstats.s_hpt > 0 &&
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118 ((savef = fopen(file_name, "wb")) != NULL))
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119 save_file(savef);
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120 fclose(savef);
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121 exit_game(EXIT_ENDWIN);
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122 }
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123
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124 /*
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125 * write the saved game on the file
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126 */
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127
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128 bool
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129 save_file(savef)
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130 register FILE *savef;
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131 {
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132 int slines = LINES;
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133 int scols = COLS;
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134 int ret = FALSE;
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135 int endian = 0x01020304;
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136 big_endian = ( *((char *)&endian) == 0x01 );
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137
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138 wmove(cw, LINES-1, 0);
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139 draw(cw);
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140
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141 encwrite(version,strlen(version)+1,savef);
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142 rs_write_int(savef,slines);
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143 rs_write_int(savef,scols);
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144
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145 ret = rs_save_file(savef);
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146
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147 return(ret);
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148 }
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149
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
150 restore(file, envp)
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
151 register char *file;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
152 char **envp;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
153 {
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
154 register int inf;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
155 extern char **environ;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
156 char buf[LINELEN];
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
157 int endian = 0x01020304;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
158 big_endian = ( *((char *)&endian) == 0x01 );
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
159
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
160 if (strcmp(file, "-r") == 0)
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
161 file = file_name;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
162
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
163 if ((inf = open(file, O_RDONLY)) < 0)
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
164 {
136
1fbdefa82533 xrogue: initial support for the -n option.
John "Elwin" Edwards
parents: 135
diff changeset
165 if (use_savedir && errno == ENOENT)
1fbdefa82533 xrogue: initial support for the -n option.
John "Elwin" Edwards
parents: 135
diff changeset
166 {
1fbdefa82533 xrogue: initial support for the -n option.
John "Elwin" Edwards
parents: 135
diff changeset
167 /* No game in progress, so one will be started. */
1fbdefa82533 xrogue: initial support for the -n option.
John "Elwin" Edwards
parents: 135
diff changeset
168 return TRUE;
1fbdefa82533 xrogue: initial support for the -n option.
John "Elwin" Edwards
parents: 135
diff changeset
169 }
133
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff changeset
170 perror(file);
136
1fbdefa82533 xrogue: initial support for the -n option.
John "Elwin" Edwards
parents: 135
diff changeset
171 return FALSE;
133
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
172 }
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
173
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
174 fflush(stdout);
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John "Elwin" Edwards
parents:
diff changeset
175
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
176 encread(buf, strlen(version) + 1, inf);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
177
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
178 if (strcmp(buf, version) != 0)
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
179 {
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
180 printf("Sorry, saved game is out of date.\n");
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
181 return FALSE;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
182 }
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
183
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
184 fflush(stdout);
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John "Elwin" Edwards
parents:
diff changeset
185
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
186 rs_read_int(inf,&lines);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
187 rs_read_int(inf,&cols);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
188
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
189 initscr();
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
190
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
191 if (lines > LINES)
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
192 {
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
193 endwin();
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
194 printf("Sorry, original game was played on a screen with %d lines.\n",lines);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff changeset
195 printf("Current screen only has %d lines. Unable to restore game\n",LINES);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff changeset
196 return(FALSE);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
197 }
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
198 if (cols > COLS)
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
199 {
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
200 endwin();
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
201 printf("Sorry, original game was played on a screen with %d columns.\n",cols);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
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202 printf("Current screen only has %d columns. Unable to restore game\n",COLS);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
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203 return(FALSE);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
204 }
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
205
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
206 typeahead(-1);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
207 setup();
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
208 cw = newwin(LINES, COLS, 0, 0);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
209 mw = newwin(LINES, COLS, 0, 0);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
210 hw = newwin(LINES, COLS, 0, 0);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
211 msgw = newwin(4, cols, 0, 0);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
212
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
213 keypad(cw, TRUE);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
214 keypad(hw, TRUE);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
215
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
216 if (rs_restore_file(inf) == FALSE)
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
217 {
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
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218 endwin();
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff changeset
219 printf("Cannot restore file\n");
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
220 close(inf);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
221 return(FALSE);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
222 }
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
223
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff changeset
224 close(inf);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
225
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff changeset
226 if (!wizard)
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff changeset
227 unlink(file);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff changeset
228
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff changeset
229 mpos = 0;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff changeset
230 environ = envp;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff changeset
231 strcpy(file_name, file);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
232 clearok(curscr, TRUE);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
233 touchwin(cw);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
234 wrefresh(cw);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
235 msg("Welcome back! --More-- ");
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
236 wait_for(' ');
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
237 msg("");
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
238 playit();
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
239
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff changeset
240 /*NOTREACHED*/
136
1fbdefa82533 xrogue: initial support for the -n option.
John "Elwin" Edwards
parents: 135
diff changeset
241 return FALSE;
133
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
242 }
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
243
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
244 #define ENCWBSIZ 1024
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff changeset
245
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
246 /*
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
247 * perform an encrypted write
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
248 */
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
249
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
250 long
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
251 encwrite(start, size, outf)
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
252 register char *start;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
253 register unsigned long size;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
254 register FILE *outf;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
255 {
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
256 register unsigned char *ep;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
257 register int i = 0;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
258 unsigned long num_written = 0;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
259 char buf[ENCWBSIZ];
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
260 int ret;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
261
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
262 ep = encstr;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
263
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
264 while (size--)
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
265 {
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
266 buf[i++] = *start++ ^ *ep++;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
267 if (*ep == '\0')
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
268 ep = encstr;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
269
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
270 if (i == ENCWBSIZ || size == 0)
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
271 {
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
272 ret = (unsigned int) fwrite(buf, 1, i, outf);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
273 if (ret > 0)
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
274 num_written += ret;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
275
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
276 if (ret < i)
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
277 return(num_written);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
278
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
279 i = 0;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
280 }
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
281 }
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
282 return(num_written);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
283 }
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
284
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
285 #define ENCRBSIZ 32768
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
286
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
287 /*
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
288 * perform an encrypted read
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
289 */
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
290
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
291 long
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
292 encread(start, size, inf)
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
293 register char *start;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
294 register unsigned long size;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
295 int inf;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
296 {
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
297 register unsigned char *ep;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
298 register int rd_siz;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
299 register unsigned long total_read;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
300
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
301 total_read = 0;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
302 while (total_read < size) {
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
303 rd_siz = ENCRBSIZ;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff changeset
304 rd_siz = ((size-total_read) > ENCRBSIZ) ? ENCRBSIZ : (size-total_read);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff changeset
305 rd_siz = read(inf,&start[total_read],rd_siz);
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
diff changeset
306 if(rd_siz==-1 || rd_siz==0)
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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307 break;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
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308 total_read += rd_siz;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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309 }
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
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310 ep = encstr;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
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311
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parents:
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312 size = total_read;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
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313 while (size--)
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
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314 {
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
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315 *start++ ^= *ep++;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
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316 if (*ep == '\0')
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
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317 ep = encstr;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
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318 }
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
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parents:
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319 return total_read;
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
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320 }
e6179860cb76 Import XRogue 8.0 from the Roguelike Restoration Project (r1490)
John "Elwin" Edwards
parents:
diff changeset
321