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annotate libmlk-core/core/sys.c @ 307:363024b76da7

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make: create install-data rather than fakeroot
author David Demelier <markand@malikania.fr>
date Tue, 29 Jun 2021 09:49:48 +0200
parents f04b4ee04db3
children 0858e33a762d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 * sys.c -- system routines
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3 *
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4 * Copyright (c) 2020 David Demelier <markand@malikania.fr>
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5 *
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6 * Permission to use, copy, modify, and/or distribute this software for any
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7 * purpose with or without fee is hereby granted, provided that the above
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8 * copyright notice and this permission notice appear in all copies.
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9 *
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10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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17 */
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18
301
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19 #include "config.h"
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20
32
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21 #include <assert.h>
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22 #include <stdio.h>
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23 #include <stdlib.h>
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24 #include <limits.h>
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25
241
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26 #if defined(_WIN32)
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27 # include <shlwapi.h>
255
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28 # include <windows.h>
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29 #else
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30 # include <sys/stat.h>
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31 # include <errno.h>
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32 # include <string.h>
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33 #endif
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34
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35 #include <SDL.h>
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36 #include <SDL_image.h>
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37 #include <SDL_mixer.h>
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38 #include <SDL_ttf.h>
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39
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40 #include "error.h"
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41 #include "sound.h"
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42 #include "sys.h"
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43
241
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44 static struct {
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45 char organization[128];
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46 char name[128];
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47 } info = {
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48 .organization = "fr.malikania",
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49 .name = "molko"
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50 };
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51
241
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52 static const char *paths[] = {
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53 [SYS_DIR_BIN] = MOLKO_BINDIR,
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54 [SYS_DIR_DATA] = MOLKO_DATADIR,
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55 [SYS_DIR_LOCALE] = MOLKO_LOCALEDIR
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56 };
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57
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58 static inline char *
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59 normalize(char *str)
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60 {
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61 for (char *p = str; *p; ++p)
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62 if (*p == '\\')
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63 *p = '/';
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64
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65 return str;
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66 }
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67
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68 static inline const char *
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69 absolute(const char *which)
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70 {
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71 static char path[PATH_MAX];
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72
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73 strlcpy(path, which, sizeof (path));
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74
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75 return normalize(path);
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76 }
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77
241
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78 static const char *
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79 system_directory(enum sys_dir kind)
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80 {
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81 static char path[PATH_MAX];
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82 static char ret[PATH_MAX];
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83 char *base, *binsect;
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84
307
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85 if ((base = getenv("MLK_ROOT"))) {
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86 snprintf(ret, sizeof (ret), "%s/%s/%s", base, MOLKO_PREFIX, paths[kind]);
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87 } else {
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88 /*
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89 * Some system does not provide support (shame on you OpenBSD)
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90 * to the executable path. In that case we use PREFIX+<dir>
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91 * instead.
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92 */
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93 if (!(base = SDL_GetBasePath()))
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94 snprintf(ret, sizeof (ret), "%s/%s", MOLKO_PREFIX, paths[kind]);
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95 else {
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96 /*
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97 * Decompose the path to the given special directory by
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98 * computing relative directory to it from where the
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99 * binary is located.
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100 *
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101 * Example:
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102 *
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103 * PREFIX/bin/mlk
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104 * PREFIX/share/mlk-adventure
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105 *
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106 * The path to the data is ../share/molko starting from
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107 * the binary.
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108 *
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109 * Put the base path into the path and remove the value
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110 * of MOLKO_BINDIR.
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111 *
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112 * Example:
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113 * from: /usr/local/bin
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114 * to: /usr/local
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115 */
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116 strlcpy(path, base, sizeof (path));
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117 SDL_free(base);
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118
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119 if ((binsect = strstr(path, paths[SYS_DIR_BIN])))
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120 *binsect = '\0';
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121
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122 snprintf(ret, sizeof (ret), "%s%s", path, paths[kind]);
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123 }
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124 }
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125
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126 return normalize(ret);
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127 }
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128
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129 static const char *
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130 user_directory(enum sys_dir kind)
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131 {
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132 /* Kept for future use. */
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133 (void)kind;
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134
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135 static char path[PATH_MAX];
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136 char *pref;
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137
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138 if ((pref = SDL_GetPrefPath(info.organization, info.name))) {
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139 strlcpy(path, pref, sizeof (path));
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140 SDL_free(pref);
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141 } else
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142 strlcpy(path, "./", sizeof (path));
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143
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144 return path;
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145 }
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146
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147 static inline int
255
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148 mkpath(const char *path)
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149 {
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150 #ifdef _WIN32
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151 /* TODO: add error using the convenient FormatMessage function. */
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152 if (!CreateDirectoryA(path, NULL) && GetLastError() != ERROR_ALREADY_EXISTS)
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153 return errorf("unable to create directory: %s", path);
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154 #else
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155 if (mkdir(path, 0755) < 0 && errno != EEXIST)
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156 return errorf("%s", strerror(errno));
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157 #endif
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158
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159 return 0;
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160 }
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161
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162 int
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163 sys_init(const char *organization, const char *name)
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164 {
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165 #if defined(__MINGW64__)
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166 /* On MinGW buffering leads to painful debugging. */
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167 setbuf(stderr, NULL);
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168 setbuf(stdout, NULL);
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169 #endif
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170
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171 strlcpy(info.organization, organization, sizeof (info.organization));
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172 strlcpy(info.name, name, sizeof (info.name));
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173
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174 if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO) < 0)
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175 return errorf("%s", SDL_GetError());
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176 if (IMG_Init(IMG_INIT_PNG) != IMG_INIT_PNG)
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177 return errorf("%s", SDL_GetError());
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178 if (TTF_Init() < 0)
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179 return errorf("%s", SDL_GetError());
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180 if (Mix_Init(MIX_INIT_OGG) != MIX_INIT_OGG)
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181 return errorf("%s", SDL_GetError());
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182 if (Mix_OpenAudio(44100, MIX_DEFAULT_FORMAT, 2, 4096) < 0)
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183 return errorf("%s", SDL_GetError());
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184
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185 Mix_AllocateChannels(SOUND_CHANNELS_MAX);
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186
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187 return 0;
255
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188 }
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189
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190 const char *
241
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191 sys_dir(enum sys_dir kind)
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192 {
241
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193 switch (kind) {
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194 case SYS_DIR_BIN:
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195 case SYS_DIR_DATA:
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196 case SYS_DIR_LOCALE:
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197 return system_directory(kind);
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198 default:
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199 return user_directory(kind);
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200 }
84
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201 }
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202
298
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203 int
255
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204 sys_mkdir(const char *directory)
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205 {
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206 char path[PATH_MAX], *p;
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207
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208 /* Copy the directory to normalize and iterate over '/'. */
258
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209 strlcpy(path, directory, sizeof (path));
255
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210 normalize(path);
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211
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212 #if defined(_WIN32)
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213 /* Remove drive letter that we don't need. */
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214 if ((p = strchr(path, ':')))
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215 ++p;
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216 else
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217 p = path;
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218 #else
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219 p = path;
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220 #endif
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221
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222 for (p = p + 1; *p; ++p) {
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223 if (*p == '/') {
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224 *p = 0;
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225
298
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226 if (mkpath(path) < 0)
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227 return -1;
255
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228
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229 *p = '/';
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230 }
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231 }
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232
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233 return mkpath(path);
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234 }
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235
23
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236 void
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237 sys_finish(void)
23
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238 {
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239 Mix_Quit();
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240 TTF_Quit();
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241 IMG_Quit();
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242 SDL_Quit();
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243 }