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1096
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1 /**
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2 * Copyright (c) 2006-2012 LOVE Development Team
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3 *
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4 * This software is provided 'as-is', without any express or implied
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5 * warranty. In no event will the authors be held liable for any damages
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6 * arising from the use of this software.
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7 *
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8 * Permission is granted to anyone to use this software for any purpose,
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9 * including commercial applications, and to alter it and redistribute it
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10 * freely, subject to the following restrictions:
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11 *
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12 * 1. The origin of this software must not be misrepresented; you must not
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13 * claim that you wrote the original software. If you use this software
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14 * in a product, an acknowledgment in the product documentation would be
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15 * appreciated but is not required.
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16 * 2. Altered source versions must be plainly marked as such, and must not be
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17 * misrepresented as being the original software.
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18 * 3. This notice may not be removed or altered from any source distribution.
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19 **/
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20
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21 #include "common/config.h"
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22
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23 #include <iostream>
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24
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25 #include "common/utf8.h"
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26 #include "common/b64.h"
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27
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28 #include "Filesystem.h"
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29
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30 namespace love
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31 {
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32 namespace filesystem
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33 {
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34 namespace physfs
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35 {
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36
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37 Filesystem::Filesystem()
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38 : open_count(0)
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39 , buffer(0)
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40 , isInited(false)
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41 , release(false)
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42 , releaseSet(false)
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43 {
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44 }
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45
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46 Filesystem::~Filesystem()
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47 {
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48 if (isInited)
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49 {
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50 isInited = false;
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51 PHYSFS_deinit();
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52 }
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53 }
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54
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55 const char *Filesystem::getName() const
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56 {
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57 return "love.filesystem.physfs";
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58 }
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59
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60 void Filesystem::init(const char *arg0)
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61 {
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62 if (!PHYSFS_init(arg0))
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63 throw Exception(PHYSFS_getLastError());
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64 isInited = true;
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65 }
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66
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67 void Filesystem::setRelease(bool release)
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68 {
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69 if (releaseSet)
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70 return;
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71 this->release = release;
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72 releaseSet = true;
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73 }
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74
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75 bool Filesystem::isRelease() const
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76 {
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77 if (!releaseSet)
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78 return false;
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79 return release;
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80 }
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81
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82 bool Filesystem::setIdentity(const char *ident)
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83 {
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84 if (!isInited)
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85 return false;
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86
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87 // Store the save directory.
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88 save_identity = std::string(ident);
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89
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90 // Generate the relative path to the game save folder.
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91 save_path_relative = std::string(LOVE_APPDATA_PREFIX LOVE_APPDATA_FOLDER LOVE_PATH_SEPARATOR) + save_identity;
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92
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93 // Generate the full path to the game save folder.
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94 save_path_full = std::string(getAppdataDirectory()) + std::string(LOVE_PATH_SEPARATOR);
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95 if (release)
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96 save_path_full += std::string(LOVE_APPDATA_PREFIX) + save_identity;
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97 else
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98 save_path_full += save_path_relative;
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99
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100 // We now have something like:
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101 // save_identity: game
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102 // save_path_relative: ./LOVE/game
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103 // save_path_full: C:\Documents and Settings\user\Application Data/LOVE/game
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104
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105 // Try to add the save directory to the search path.
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106 // (No error on fail, it means that the path doesn't exist).
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107 PHYSFS_addToSearchPath(save_path_full.c_str(), 0);
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108
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109 return true;
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110 }
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111
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112 const char *Filesystem::getIdentity() const
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113 {
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114 return save_identity.c_str();
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115 }
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116
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117 bool Filesystem::setSource(const char *source)
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118 {
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119 if (!isInited)
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120 return false;
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121
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122 // Check whether directory is already set.
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123 if (!game_source.empty())
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124 return false;
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125
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126 // Add the directory.
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127 if (!PHYSFS_addToSearchPath(source, 1))
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128 return false;
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129
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130 // Save the game source.
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131 game_source = std::string(source);
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132
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133 return true;
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134 }
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135
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136 bool Filesystem::setupWriteDirectory()
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137 {
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138 if (!isInited)
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139 return false;
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140
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141 // These must all be set.
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142 if (save_identity.empty() || save_path_full.empty() || save_path_relative.empty())
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143 return false;
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144
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145 // Set the appdata folder as writable directory.
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146 // (We must create the save folder before mounting it).
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147 if (!PHYSFS_setWriteDir(getAppdataDirectory()))
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148 return false;
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149
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150 // Create the save folder. (We're now "at" %APPDATA%).
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151 bool success = false;
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152 if (release)
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153 success = mkdir(save_identity.c_str());
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154 else
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155 success = mkdir(save_path_relative.c_str());
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156
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157 if (!success)
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158 {
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159 PHYSFS_setWriteDir(0); // Clear the write directory in case of error.
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160 return false;
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161 }
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162
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163 // Set the final write directory.
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164 if (!PHYSFS_setWriteDir(save_path_full.c_str()))
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165 return false;
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166
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167 // Add the directory. (Will not be readded if already present).
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168 if (!PHYSFS_addToSearchPath(save_path_full.c_str(), 0))
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169 {
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170 PHYSFS_setWriteDir(0); // Clear the write directory in case of error.
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171 return false;
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172 }
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173
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174 return true;
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175 }
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176
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177 File *Filesystem::newFile(const char *filename)
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178 {
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179 return new File(filename);
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180 }
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181
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182 FileData *Filesystem::newFileData(void *data, unsigned int size, const char *filename)
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183 {
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184 FileData *fd = new FileData(size, std::string(filename));
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185
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186 // Copy the data into FileData.
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187 memcpy(fd->getData(), data, size);
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188
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189 return fd;
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190 }
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191
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192 FileData *Filesystem::newFileData(const char *b64, const char *filename)
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193 {
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194 int size = strlen(b64);
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195 int outsize = 0;
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196 char *dst = b64_decode(b64, size, outsize);
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197 FileData *fd = new FileData(outsize, std::string(filename));
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198
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199 // Copy the data into FileData.
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200 memcpy(fd->getData(), dst, outsize);
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201 delete [] dst;
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202
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203 return fd;
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204 }
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205
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206 const char *Filesystem::getWorkingDirectory()
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207 {
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208 if (cwd.empty())
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209 {
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210 #ifdef LOVE_WINDOWS
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211
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212 WCHAR w_cwd[LOVE_MAX_PATH];
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213 _wgetcwd(w_cwd, LOVE_MAX_PATH);
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214 cwd = to_utf8(w_cwd);
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215 replace_char(cwd, '\\', '/');
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216 #else
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217 char *cwd_char = new char[LOVE_MAX_PATH];
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218
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219 if (getcwd(cwd_char, LOVE_MAX_PATH))
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220 cwd = cwd_char; // if getcwd fails, cwd_char (and thus cwd) will still be empty
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221
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222 delete [] cwd_char;
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223 #endif
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224 }
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225
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226 return cwd.c_str();
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227 }
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228
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229 const char *Filesystem::getUserDirectory()
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230 {
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231 return PHYSFS_getUserDir();
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232 }
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233
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234 const char *Filesystem::getAppdataDirectory()
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235 {
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236 #ifdef LOVE_WINDOWS
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237 if (appdata.empty())
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238 {
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239 wchar_t *w_appdata = _wgetenv(TEXT("APPDATA"));
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240 appdata = to_utf8(w_appdata);
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241 replace_char(appdata, '\\', '/');
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242 }
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243 return appdata.c_str();
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244 #elif defined(LOVE_MACOSX)
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245 if (appdata.empty())
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246 {
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247 std::string udir = getUserDirectory();
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248 udir.append("/Library/Application Support");
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249 appdata = udir;
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250 }
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251 return appdata.c_str();
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252 #elif defined(LOVE_LINUX)
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253 if (appdata.empty())
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254 {
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255 char *xdgdatahome = getenv("XDG_DATA_HOME");
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256 if (!xdgdatahome)
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257 appdata = std::string(getUserDirectory()) + "/.local/share/";
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258 else
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259 appdata = xdgdatahome;
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260 }
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261 return appdata.c_str();
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262 #else
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263 return getUserDirectory();
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264 #endif
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265 }
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266
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267
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268 const char *Filesystem::getSaveDirectory()
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269 {
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270 return save_path_full.c_str();
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271 }
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272
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273 bool Filesystem::exists(const char *file)
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274 {
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275 if (PHYSFS_exists(file))
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276 return true;
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277 return false;
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278 }
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279
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280 bool Filesystem::isDirectory(const char *file)
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281 {
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282 if (PHYSFS_isDirectory(file))
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283 return true;
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284 return false;
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285 }
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286
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287 bool Filesystem::isFile(const char *file)
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288 {
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289 return exists(file) && !isDirectory(file);
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290 }
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291
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292 bool Filesystem::mkdir(const char *file)
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293 {
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294 if (PHYSFS_getWriteDir() == 0 && !setupWriteDirectory())
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295 return false;
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296
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297 if (!PHYSFS_mkdir(file))
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298 return false;
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299 return true;
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300 }
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301
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302 bool Filesystem::remove(const char *file)
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303 {
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304 if (PHYSFS_getWriteDir() == 0 && !setupWriteDirectory())
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305 return false;
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306
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307 if (!PHYSFS_delete(file))
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308 return false;
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309 return true;
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310 }
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311
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312 int Filesystem::read(lua_State *L)
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313 {
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314 // The file to read from. The file must either be created
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315 // on-the-fly, or passed as a parameter.
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316 File *file;
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317
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318 if (lua_isstring(L, 1))
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319 {
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320 // Create the file.
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321 file = newFile(lua_tostring(L, 1));
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322 }
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323 else
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324 return luaL_error(L, "Expected filename.");
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325
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326 // Optionally, the caller can specify whether to read
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327 // the whole file, or just a part of it.
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328 int count = luaL_optint(L, 2, (lua_Integer)file->getSize()); // FIXME
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329
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330 // Read the data.
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331 Data *data = file->read(count);
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332
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333 // Error check.
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334 if (data == 0)
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335 return luaL_error(L, "File could not be read.");
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336
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337 // Close and delete the file, if we created it.
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338 // (I.e. if the first parameter is a string).
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339 if (lua_isstring(L, 1))
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340 file->release();
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341
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342 // Push the string.
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343 lua_pushlstring(L, (char *)data->getData(), data->getSize());
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344
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345 // Push the size.
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346 lua_pushinteger(L, data->getSize());
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347
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348 // Lua has a copy now, so we can free it.
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349 data->release();
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350
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351 return 2;
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352 }
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353
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354 int Filesystem::write(lua_State *L)
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355 {
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356 // The file to write to. The file must either be created
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357 // on-the-fly, or passed as a parameter.
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358 File *file;
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359
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360 // We know for sure that we need a second parameter, so
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361 // let's check that first.
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362 if (lua_isnoneornil(L, 2))
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363 return luaL_error(L, "Second argument needed.");
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364
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365 if (lua_isstring(L, 1))
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366 {
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367 // Create the file.
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368 file = newFile(lua_tostring(L, 1));
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369 }
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370 else
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371 return luaL_error(L, "Expected filename.");
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372
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373 // Get the current mode of the file.
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374 File::Mode mode = file->getMode();
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375
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376 if (mode == File::CLOSED)
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377 {
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378 // It should be possible to use append mode, but
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379 // normal File::Mode::Write is the default.
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380 int mode = luaL_optint(L, 4, File::WRITE);
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381
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382 // Open the file.
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383 if (!file->open((File::Mode)mode))
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384 return luaL_error(L, "Could not open file.");
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385 }
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386
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387 size_t length = 0;
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388 const char *input;
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389 if (lua_isstring(L, 2))
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390 {
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391 input = lua_tolstring(L, 2, &length);
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392 }
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393 else if (luax_istype(L, 2, DATA_T))
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394 {
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395 love::Data *data = luax_totype<love::Data>(L, 2, "Data", DATA_T);
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396 length = data->getSize();
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397 input = (char *)data->getData();
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398 }
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399 else
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400 {
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401 return luaL_error(L, "Expected string or data for argument #2.");
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402 }
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403
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404 // Get how much we should write. Length of string default.
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405 length = luaL_optint(L, 3, length);
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406
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407 // Write the data.
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408 bool success = file->write(input, length);
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409
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410 // Close and delete the file, if we created
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411 // it in this function.
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412 if (lua_isstring(L, 1))
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413 {
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414 // Kill the file if "we" created it.
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415 file->close();
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416 file->release();
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417 }
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418
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419 if (!success)
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420 return luaL_error(L, "Data could not be written.");
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421
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422 lua_pushboolean(L, success);
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423 return 1;
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424 }
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425
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426 int Filesystem::enumerate(lua_State *L)
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427 {
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428 int n = lua_gettop(L);
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429
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430 if (n != 1)
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431 return luaL_error(L, "Function requires a single parameter.");
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432
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433 int type = lua_type(L, 1);
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434
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435 if (type != LUA_TSTRING)
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436 return luaL_error(L, "Function requires parameter of type string.");
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437
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438 const char *dir = lua_tostring(L, 1);
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439 char **rc = PHYSFS_enumerateFiles(dir);
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440 char **i;
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441 int index = 1;
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442
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443 lua_newtable(L);
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444
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445 for (i = rc; *i != 0; i++)
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446 {
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447 lua_pushinteger(L, index);
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448 lua_pushstring(L, *i);
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449 lua_settable(L, -3);
|
|
|
450 index++;
|
|
|
451 }
|
|
|
452
|
|
|
453 PHYSFS_freeList(rc);
|
|
|
454
|
|
|
455 return 1;
|
|
|
456 }
|
|
|
457
|
|
|
458 int Filesystem::lines_i(lua_State *L)
|
|
|
459 {
|
|
|
460 const int bufsize = 1024;
|
|
|
461 char buf[bufsize];
|
|
|
462 int linesize = 0;
|
|
|
463 bool newline = false;
|
|
|
464
|
|
|
465 File *file = luax_checktype<File>(L, lua_upvalueindex(1), "File", FILESYSTEM_FILE_T);
|
|
|
466
|
|
|
467 // Only accept read mode at this point.
|
|
|
468 if (file->getMode() != File::READ)
|
|
|
469 return luaL_error(L, "File needs to stay in read mode.");
|
|
|
470
|
|
|
471 int64 pos = file->tell();
|
|
|
472 int64 userpos = -1;
|
|
|
473
|
|
|
474 if (lua_isnoneornil(L, lua_upvalueindex(2)) == 0)
|
|
|
475 {
|
|
|
476 // User may have changed the file position.
|
|
|
477 userpos = pos;
|
|
|
478 pos = (int64) lua_tonumber(L, lua_upvalueindex(2));
|
|
|
479 if (userpos != pos)
|
|
|
480 file->seek(pos);
|
|
|
481 }
|
|
|
482
|
|
|
483 while (!newline && !file->eof())
|
|
|
484 {
|
|
|
485 // This 64-bit to 32-bit integer cast should be safe as it never exceeds bufsize.
|
|
|
486 int read = (int) file->read(buf, bufsize);
|
|
|
487 if (read < 0)
|
|
|
488 return luaL_error(L, "Could not read from file.");
|
|
|
489
|
|
|
490 linesize += read;
|
|
|
491
|
|
|
492 for (int i = 0; i < read; i++)
|
|
|
493 {
|
|
|
494 if (buf[i] == '\n')
|
|
|
495 {
|
|
|
496 linesize -= read - i;
|
|
|
497 newline = true;
|
|
|
498 break;
|
|
|
499 }
|
|
|
500 }
|
|
|
501 }
|
|
|
502
|
|
|
503 if (newline || (file->eof() && linesize > 0))
|
|
|
504 {
|
|
|
505 if (linesize < bufsize)
|
|
|
506 {
|
|
|
507 // We have the line in the buffer on the stack. No 'new' and 'read' needed.
|
|
|
508 lua_pushlstring(L, buf, linesize > 0 && buf[linesize - 1] == '\r' ? linesize - 1 : linesize);
|
|
|
509 if (userpos < 0)
|
|
|
510 file->seek(pos + linesize + 1);
|
|
|
511 }
|
|
|
512 else
|
|
|
513 {
|
|
|
514 char *str;
|
|
|
515 try
|
|
|
516 {
|
|
|
517 str = new char[linesize + 1];
|
|
|
518 }
|
|
|
519 catch(std::bad_alloc &)
|
|
|
520 {
|
|
|
521 return luaL_error(L, "Out of memory");
|
|
|
522 }
|
|
|
523 file->seek(pos);
|
|
|
524
|
|
|
525 // Read the \n anyway and save us a call to seek.
|
|
|
526 if (file->read(str, linesize + 1) == -1)
|
|
|
527 {
|
|
|
528 delete [] str;
|
|
|
529 return luaL_error(L, "Could not read from file.");
|
|
|
530 }
|
|
|
531
|
|
|
532 lua_pushlstring(L, str, str[linesize - 1] == '\r' ? linesize - 1 : linesize);
|
|
|
533 delete [] str;
|
|
|
534 }
|
|
|
535
|
|
|
536 if (userpos >= 0)
|
|
|
537 {
|
|
|
538 // Save new position in upvalue.
|
|
|
539 lua_pushnumber(L, (lua_Number)(pos + linesize + 1));
|
|
|
540 lua_replace(L, lua_upvalueindex(2));
|
|
|
541 file->seek(userpos);
|
|
|
542 }
|
|
|
543
|
|
|
544 return 1;
|
|
|
545 }
|
|
|
546
|
|
|
547 // EOF reached.
|
|
|
548 if (userpos >= 0 && luax_toboolean(L, lua_upvalueindex(3)))
|
|
|
549 file->seek(userpos);
|
|
|
550 else
|
|
|
551 file->close();
|
|
|
552
|
|
|
553 return 0;
|
|
|
554 }
|
|
|
555
|
|
|
556 int Filesystem::load(lua_State *L)
|
|
|
557 {
|
|
|
558 // Need only one arg.
|
|
|
559 luax_assert_argc(L, 1, 1);
|
|
|
560
|
|
|
561 // Must be string.
|
|
|
562 if (!lua_isstring(L, -1))
|
|
|
563 return luaL_error(L, "The argument must be a string.");
|
|
|
564
|
|
|
565 std::string filename = lua_tostring(L, -1);
|
|
|
566
|
|
|
567 // The file must exist.
|
|
|
568 if (!exists(filename.c_str()))
|
|
|
569 return luaL_error(L, "File %s does not exist.", filename.c_str());
|
|
|
570
|
|
|
571 // Create the file.
|
|
|
572 File *file = newFile(filename.c_str());
|
|
|
573
|
|
|
574 // Get the data from the file.
|
|
|
575 Data *data = file->read();
|
|
|
576
|
|
|
577 int status = luaL_loadbuffer(L, (const char *)data->getData(), data->getSize(), ("@" + filename).c_str());
|
|
|
578
|
|
|
579 data->release();
|
|
|
580 file->release();
|
|
|
581
|
|
|
582 // Load the chunk, but don't run it.
|
|
|
583 switch (status)
|
|
|
584 {
|
|
|
585 case LUA_ERRMEM:
|
|
|
586 return luaL_error(L, "Memory allocation error: %s\n", lua_tostring(L, -1));
|
|
|
587 case LUA_ERRSYNTAX:
|
|
|
588 return luaL_error(L, "Syntax error: %s\n", lua_tostring(L, -1));
|
|
|
589 default: // success
|
|
|
590 return 1;
|
|
|
591 }
|
|
|
592 }
|
|
|
593
|
|
|
594 int Filesystem::getLastModified(lua_State *L)
|
|
|
595 {
|
|
|
596 const char *filename = luaL_checkstring(L, 1);
|
|
|
597 PHYSFS_sint64 time = PHYSFS_getLastModTime(filename);
|
|
|
598 if (time == -1)
|
|
|
599 {
|
|
|
600 lua_pushnil(L);
|
|
|
601 lua_pushstring(L, "Could not determine file modification date.");
|
|
|
602 return 2;
|
|
|
603 }
|
|
|
604 lua_pushnumber(L, static_cast<lua_Number>(time));
|
|
|
605 return 1;
|
|
|
606 }
|
|
|
607
|
|
|
608 } // physfs
|
|
|
609 } // filesystem
|
|
|
610 } // love
|
