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1 /* Return the initial module search path. */ |
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2 |
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3 #include "Python.h" |
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4 #include "osdefs.h" |
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5 |
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6 #include <sys/types.h> |
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7 #include <string.h> |
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8 |
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9 #ifdef __APPLE__ |
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10 #include <mach-o/dyld.h> |
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11 #endif |
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12 |
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13 /* Search in some common locations for the associated Python libraries. |
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14 * |
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15 * Two directories must be found, the platform independent directory |
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16 * (prefix), containing the common .py and .pyc files, and the platform |
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17 * dependent directory (exec_prefix), containing the shared library |
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18 * modules. Note that prefix and exec_prefix can be the same directory, |
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19 * but for some installations, they are different. |
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20 * |
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21 * Py_GetPath() carries out separate searches for prefix and exec_prefix. |
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22 * Each search tries a number of different locations until a ``landmark'' |
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23 * file or directory is found. If no prefix or exec_prefix is found, a |
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24 * warning message is issued and the preprocessor defined PREFIX and |
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25 * EXEC_PREFIX are used (even though they will not work); python carries on |
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26 * as best as is possible, but most imports will fail. |
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27 * |
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28 * Before any searches are done, the location of the executable is |
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29 * determined. If argv[0] has one or more slashes in it, it is used |
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30 * unchanged. Otherwise, it must have been invoked from the shell's path, |
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31 * so we search $PATH for the named executable and use that. If the |
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32 * executable was not found on $PATH (or there was no $PATH environment |
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33 * variable), the original argv[0] string is used. |
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34 * |
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35 * Next, the executable location is examined to see if it is a symbolic |
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36 * link. If so, the link is chased (correctly interpreting a relative |
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37 * pathname if one is found) and the directory of the link target is used. |
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38 * |
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39 * Finally, argv0_path is set to the directory containing the executable |
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40 * (i.e. the last component is stripped). |
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41 * |
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42 * With argv0_path in hand, we perform a number of steps. The same steps |
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43 * are performed for prefix and for exec_prefix, but with a different |
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44 * landmark. |
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45 * |
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46 * Step 1. Are we running python out of the build directory? This is |
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47 * checked by looking for a different kind of landmark relative to |
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48 * argv0_path. For prefix, the landmark's path is derived from the VPATH |
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49 * preprocessor variable (taking into account that its value is almost, but |
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50 * not quite, what we need). For exec_prefix, the landmark is |
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51 * Modules/Setup. If the landmark is found, we're done. |
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52 * |
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53 * For the remaining steps, the prefix landmark will always be |
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54 * lib/python$VERSION/os.py and the exec_prefix will always be |
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55 * lib/python$VERSION/lib-dynload, where $VERSION is Python's version |
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56 * number as supplied by the Makefile. Note that this means that no more |
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57 * build directory checking is performed; if the first step did not find |
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58 * the landmarks, the assumption is that python is running from an |
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59 * installed setup. |
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60 * |
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61 * Step 2. See if the $PYTHONHOME environment variable points to the |
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62 * installed location of the Python libraries. If $PYTHONHOME is set, then |
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63 * it points to prefix and exec_prefix. $PYTHONHOME can be a single |
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64 * directory, which is used for both, or the prefix and exec_prefix |
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65 * directories separated by a colon. |
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66 * |
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67 * Step 3. Try to find prefix and exec_prefix relative to argv0_path, |
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68 * backtracking up the path until it is exhausted. This is the most common |
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69 * step to succeed. Note that if prefix and exec_prefix are different, |
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70 * exec_prefix is more likely to be found; however if exec_prefix is a |
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71 * subdirectory of prefix, both will be found. |
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72 * |
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73 * Step 4. Search the directories pointed to by the preprocessor variables |
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74 * PREFIX and EXEC_PREFIX. These are supplied by the Makefile but can be |
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75 * passed in as options to the configure script. |
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76 * |
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77 * That's it! |
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78 * |
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79 * Well, almost. Once we have determined prefix and exec_prefix, the |
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80 * preprocessor variable PYTHONPATH is used to construct a path. Each |
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81 * relative path on PYTHONPATH is prefixed with prefix. Then the directory |
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82 * containing the shared library modules is appended. The environment |
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83 * variable $PYTHONPATH is inserted in front of it all. Finally, the |
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84 * prefix and exec_prefix globals are tweaked so they reflect the values |
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85 * expected by other code, by stripping the "lib/python$VERSION/..." stuff |
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86 * off. If either points to the build directory, the globals are reset to |
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87 * the corresponding preprocessor variables (so sys.prefix will reflect the |
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88 * installation location, even though sys.path points into the build |
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89 * directory). This seems to make more sense given that currently the only |
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90 * known use of sys.prefix and sys.exec_prefix is for the ILU installation |
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91 * process to find the installed Python tree. |
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92 */ |
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93 |
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94 #ifdef __cplusplus |
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95 extern "C" { |
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96 #endif |
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97 |
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98 |
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99 #ifndef VERSION |
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100 #define VERSION "2.1" |
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101 #endif |
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102 |
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103 #ifndef VPATH |
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104 #define VPATH "." |
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105 #endif |
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106 |
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107 #ifndef PREFIX |
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108 # ifdef __VMS |
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109 # define PREFIX "" |
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110 # else |
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111 # define PREFIX "/usr/local" |
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112 # endif |
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113 #endif |
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114 |
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115 #ifndef EXEC_PREFIX |
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116 #define EXEC_PREFIX PREFIX |
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117 #endif |
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118 |
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119 #ifndef PYTHONPATH |
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120 #define PYTHONPATH PREFIX "/lib/python" VERSION ":" \ |
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121 EXEC_PREFIX "/lib/python" VERSION "/lib-dynload" |
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122 #endif |
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123 |
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124 #ifndef LANDMARK |
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125 #define LANDMARK "os.py" |
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126 #endif |
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127 |
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128 static char prefix[MAXPATHLEN+1]; |
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129 static char exec_prefix[MAXPATHLEN+1]; |
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130 static char progpath[MAXPATHLEN+1]; |
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131 static char *module_search_path = NULL; |
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132 static char lib_python[] = "lib/python" VERSION; |
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133 |
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134 static void |
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135 reduce(char *dir) |
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136 { |
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137 size_t i = strlen(dir); |
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138 while (i > 0 && dir[i] != SEP) |
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139 --i; |
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140 dir[i] = '\0'; |
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141 } |
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142 |
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143 |
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144 static int |
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145 isfile(char *filename) /* Is file, not directory */ |
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146 { |
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147 struct stat buf; |
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148 if (stat(filename, &buf) != 0) |
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149 return 0; |
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150 if (!S_ISREG(buf.st_mode)) |
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151 return 0; |
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152 return 1; |
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153 } |
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154 |
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155 |
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156 static int |
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157 ismodule(char *filename) /* Is module -- check for .pyc/.pyo too */ |
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158 { |
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159 if (isfile(filename)) |
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160 return 1; |
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161 |
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162 /* Check for the compiled version of prefix. */ |
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163 if (strlen(filename) < MAXPATHLEN) { |
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164 strcat(filename, Py_OptimizeFlag ? "o" : "c"); |
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165 if (isfile(filename)) |
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166 return 1; |
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167 } |
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168 return 0; |
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169 } |
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170 |
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171 |
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172 static int |
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173 isxfile(char *filename) /* Is executable file */ |
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174 { |
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175 struct stat buf; |
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176 if (stat(filename, &buf) != 0) |
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177 return 0; |
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178 if (!S_ISREG(buf.st_mode)) |
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179 return 0; |
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180 if ((buf.st_mode & 0111) == 0) |
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181 return 0; |
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182 return 1; |
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183 } |
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184 |
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185 |
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186 static int |
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187 isdir(char *filename) /* Is directory */ |
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188 { |
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189 struct stat buf; |
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190 if (stat(filename, &buf) != 0) |
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191 return 0; |
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192 if (!S_ISDIR(buf.st_mode)) |
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193 return 0; |
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194 return 1; |
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195 } |
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196 |
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197 |
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198 /* Add a path component, by appending stuff to buffer. |
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199 buffer must have at least MAXPATHLEN + 1 bytes allocated, and contain a |
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200 NUL-terminated string with no more than MAXPATHLEN characters (not counting |
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201 the trailing NUL). It's a fatal error if it contains a string longer than |
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202 that (callers must be careful!). If these requirements are met, it's |
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203 guaranteed that buffer will still be a NUL-terminated string with no more |
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204 than MAXPATHLEN characters at exit. If stuff is too long, only as much of |
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205 stuff as fits will be appended. |
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206 */ |
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207 static void |
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208 joinpath(char *buffer, char *stuff) |
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209 { |
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210 size_t n, k; |
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211 if (stuff[0] == SEP) |
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212 n = 0; |
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213 else { |
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214 n = strlen(buffer); |
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215 if (n > 0 && buffer[n-1] != SEP && n < MAXPATHLEN) |
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216 buffer[n++] = SEP; |
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217 } |
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218 if (n > MAXPATHLEN) |
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219 Py_FatalError("buffer overflow in getpath.c's joinpath()"); |
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220 k = strlen(stuff); |
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221 if (n + k > MAXPATHLEN) |
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222 k = MAXPATHLEN - n; |
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223 strncpy(buffer+n, stuff, k); |
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224 buffer[n+k] = '\0'; |
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225 } |
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226 |
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227 /* copy_absolute requires that path be allocated at least |
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228 MAXPATHLEN + 1 bytes and that p be no more than MAXPATHLEN bytes. */ |
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229 static void |
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230 copy_absolute(char *path, char *p) |
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231 { |
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232 if (p[0] == SEP) |
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233 strcpy(path, p); |
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234 else { |
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235 getcwd(path, MAXPATHLEN); |
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236 if (p[0] == '.' && p[1] == SEP) |
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237 p += 2; |
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238 joinpath(path, p); |
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239 } |
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240 } |
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241 |
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242 /* absolutize() requires that path be allocated at least MAXPATHLEN+1 bytes. */ |
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243 static void |
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244 absolutize(char *path) |
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245 { |
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246 char buffer[MAXPATHLEN + 1]; |
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247 |
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248 if (path[0] == SEP) |
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249 return; |
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250 copy_absolute(buffer, path); |
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251 strcpy(path, buffer); |
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252 } |
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253 |
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254 /* search_for_prefix requires that argv0_path be no more than MAXPATHLEN |
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255 bytes long. |
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256 */ |
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257 static int |
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258 search_for_prefix(char *argv0_path, char *home) |
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259 { |
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260 size_t n; |
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261 char *vpath; |
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262 |
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263 /* If PYTHONHOME is set, we believe it unconditionally */ |
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264 if (home) { |
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265 char *delim; |
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266 strncpy(prefix, home, MAXPATHLEN); |
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267 delim = strchr(prefix, DELIM); |
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268 if (delim) |
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269 *delim = '\0'; |
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270 joinpath(prefix, lib_python); |
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271 joinpath(prefix, LANDMARK); |
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272 return 1; |
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273 } |
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274 |
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275 /* Check to see if argv[0] is in the build directory */ |
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276 strcpy(prefix, argv0_path); |
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277 joinpath(prefix, "Modules/Setup"); |
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278 if (isfile(prefix)) { |
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279 /* Check VPATH to see if argv0_path is in the build directory. */ |
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280 vpath = VPATH; |
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281 strcpy(prefix, argv0_path); |
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282 joinpath(prefix, vpath); |
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283 joinpath(prefix, "Lib"); |
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284 joinpath(prefix, LANDMARK); |
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285 if (ismodule(prefix)) |
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286 return -1; |
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287 } |
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288 |
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289 /* Search from argv0_path, until root is found */ |
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290 copy_absolute(prefix, argv0_path); |
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291 do { |
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292 n = strlen(prefix); |
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293 joinpath(prefix, lib_python); |
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294 joinpath(prefix, LANDMARK); |
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295 if (ismodule(prefix)) |
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296 return 1; |
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297 prefix[n] = '\0'; |
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298 reduce(prefix); |
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299 } while (prefix[0]); |
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300 |
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301 /* Look at configure's PREFIX */ |
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302 strncpy(prefix, PREFIX, MAXPATHLEN); |
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303 joinpath(prefix, lib_python); |
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304 joinpath(prefix, LANDMARK); |
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305 if (ismodule(prefix)) |
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306 return 1; |
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307 |
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308 /* Fail */ |
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309 return 0; |
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310 } |
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311 |
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312 |
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313 /* search_for_exec_prefix requires that argv0_path be no more than |
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314 MAXPATHLEN bytes long. |
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315 */ |
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316 static int |
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317 search_for_exec_prefix(char *argv0_path, char *home) |
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318 { |
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319 size_t n; |
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320 |
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321 /* If PYTHONHOME is set, we believe it unconditionally */ |
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322 if (home) { |
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323 char *delim; |
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324 delim = strchr(home, DELIM); |
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325 if (delim) |
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326 strncpy(exec_prefix, delim+1, MAXPATHLEN); |
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327 else |
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328 strncpy(exec_prefix, home, MAXPATHLEN); |
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329 joinpath(exec_prefix, lib_python); |
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330 joinpath(exec_prefix, "lib-dynload"); |
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331 return 1; |
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332 } |
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333 |
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334 /* Check to see if argv[0] is in the build directory */ |
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335 strcpy(exec_prefix, argv0_path); |
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336 joinpath(exec_prefix, "Modules/Setup"); |
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337 if (isfile(exec_prefix)) { |
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338 reduce(exec_prefix); |
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339 return -1; |
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340 } |
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341 |
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342 /* Search from argv0_path, until root is found */ |
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343 copy_absolute(exec_prefix, argv0_path); |
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344 do { |
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345 n = strlen(exec_prefix); |
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346 joinpath(exec_prefix, lib_python); |
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347 joinpath(exec_prefix, "lib-dynload"); |
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348 if (isdir(exec_prefix)) |
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349 return 1; |
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350 exec_prefix[n] = '\0'; |
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351 reduce(exec_prefix); |
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352 } while (exec_prefix[0]); |
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353 |
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354 /* Look at configure's EXEC_PREFIX */ |
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355 strncpy(exec_prefix, EXEC_PREFIX, MAXPATHLEN); |
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356 joinpath(exec_prefix, lib_python); |
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357 joinpath(exec_prefix, "lib-dynload"); |
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358 if (isdir(exec_prefix)) |
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359 return 1; |
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360 |
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361 /* Fail */ |
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362 return 0; |
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363 } |
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364 |
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365 |
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366 static void |
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367 calculate_path(void) |
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368 { |
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369 extern char *Py_GetProgramName(void); |
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370 |
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371 static char delimiter[2] = {DELIM, '\0'}; |
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372 static char separator[2] = {SEP, '\0'}; |
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373 char *pythonpath = PYTHONPATH; |
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374 char *rtpypath = Py_GETENV("PYTHONPATH"); |
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375 char *home = Py_GetPythonHome(); |
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376 char *path = getenv("PATH"); |
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377 char *prog = Py_GetProgramName(); |
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378 char argv0_path[MAXPATHLEN+1]; |
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379 char zip_path[MAXPATHLEN+1]; |
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380 int pfound, efound; /* 1 if found; -1 if found build directory */ |
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381 char *buf; |
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382 size_t bufsz; |
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383 size_t prefixsz; |
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384 char *defpath = pythonpath; |
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385 #ifdef WITH_NEXT_FRAMEWORK |
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386 NSModule pythonModule; |
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387 #endif |
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388 #ifdef __APPLE__ |
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389 #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4 |
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390 uint32_t nsexeclength = MAXPATHLEN; |
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391 #else |
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392 unsigned long nsexeclength = MAXPATHLEN; |
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393 #endif |
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394 #endif |
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395 |
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396 /* If there is no slash in the argv0 path, then we have to |
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397 * assume python is on the user's $PATH, since there's no |
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398 * other way to find a directory to start the search from. If |
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399 * $PATH isn't exported, you lose. |
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400 */ |
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401 if (strchr(prog, SEP)) |
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402 strncpy(progpath, prog, MAXPATHLEN); |
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403 #ifdef __APPLE__ |
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404 /* On Mac OS X, if a script uses an interpreter of the form |
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405 * "#!/opt/python2.3/bin/python", the kernel only passes "python" |
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406 * as argv[0], which falls through to the $PATH search below. |
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407 * If /opt/python2.3/bin isn't in your path, or is near the end, |
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408 * this algorithm may incorrectly find /usr/bin/python. To work |
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409 * around this, we can use _NSGetExecutablePath to get a better |
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410 * hint of what the intended interpreter was, although this |
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411 * will fail if a relative path was used. but in that case, |
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412 * absolutize() should help us out below |
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413 */ |
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414 else if(0 == _NSGetExecutablePath(progpath, &nsexeclength) && progpath[0] == SEP) |
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415 ; |
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416 #endif /* __APPLE__ */ |
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417 else if (path) { |
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418 while (1) { |
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419 char *delim = strchr(path, DELIM); |
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420 |
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421 if (delim) { |
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422 size_t len = delim - path; |
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423 if (len > MAXPATHLEN) |
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424 len = MAXPATHLEN; |
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425 strncpy(progpath, path, len); |
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426 *(progpath + len) = '\0'; |
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427 } |
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428 else |
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429 strncpy(progpath, path, MAXPATHLEN); |
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430 |
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431 joinpath(progpath, prog); |
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432 if (isxfile(progpath)) |
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433 break; |
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434 |
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435 if (!delim) { |
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436 progpath[0] = '\0'; |
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437 break; |
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438 } |
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439 path = delim + 1; |
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440 } |
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441 } |
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442 else |
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443 progpath[0] = '\0'; |
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444 if (progpath[0] != SEP) |
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445 absolutize(progpath); |
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446 strncpy(argv0_path, progpath, MAXPATHLEN); |
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447 argv0_path[MAXPATHLEN] = '\0'; |
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448 |
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449 #ifdef WITH_NEXT_FRAMEWORK |
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450 /* On Mac OS X we have a special case if we're running from a framework. |
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451 ** This is because the python home should be set relative to the library, |
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452 ** which is in the framework, not relative to the executable, which may |
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453 ** be outside of the framework. Except when we're in the build directory... |
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454 */ |
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455 pythonModule = NSModuleForSymbol(NSLookupAndBindSymbol("_Py_Initialize")); |
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456 /* Use dylib functions to find out where the framework was loaded from */ |
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457 buf = (char *)NSLibraryNameForModule(pythonModule); |
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458 if (buf != NULL) { |
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459 /* We're in a framework. */ |
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460 /* See if we might be in the build directory. The framework in the |
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461 ** build directory is incomplete, it only has the .dylib and a few |
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462 ** needed symlinks, it doesn't have the Lib directories and such. |
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463 ** If we're running with the framework from the build directory we must |
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464 ** be running the interpreter in the build directory, so we use the |
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465 ** build-directory-specific logic to find Lib and such. |
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466 */ |
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467 strncpy(argv0_path, buf, MAXPATHLEN); |
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468 reduce(argv0_path); |
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469 joinpath(argv0_path, lib_python); |
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470 joinpath(argv0_path, LANDMARK); |
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471 if (!ismodule(argv0_path)) { |
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472 /* We are in the build directory so use the name of the |
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473 executable - we know that the absolute path is passed */ |
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474 strncpy(argv0_path, prog, MAXPATHLEN); |
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475 } |
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476 else { |
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477 /* Use the location of the library as the progpath */ |
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478 strncpy(argv0_path, buf, MAXPATHLEN); |
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479 } |
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480 } |
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481 #endif |
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482 |
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483 #if HAVE_READLINK |
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484 { |
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485 char tmpbuffer[MAXPATHLEN+1]; |
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486 int linklen = readlink(progpath, tmpbuffer, MAXPATHLEN); |
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487 while (linklen != -1) { |
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488 /* It's not null terminated! */ |
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489 tmpbuffer[linklen] = '\0'; |
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490 if (tmpbuffer[0] == SEP) |
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491 /* tmpbuffer should never be longer than MAXPATHLEN, |
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492 but extra check does not hurt */ |
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493 strncpy(argv0_path, tmpbuffer, MAXPATHLEN); |
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494 else { |
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495 /* Interpret relative to progpath */ |
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496 reduce(argv0_path); |
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497 joinpath(argv0_path, tmpbuffer); |
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498 } |
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499 linklen = readlink(argv0_path, tmpbuffer, MAXPATHLEN); |
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500 } |
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501 } |
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502 #endif /* HAVE_READLINK */ |
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503 |
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504 reduce(argv0_path); |
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505 /* At this point, argv0_path is guaranteed to be less than |
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506 MAXPATHLEN bytes long. |
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507 */ |
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508 |
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509 if (!(pfound = search_for_prefix(argv0_path, home))) { |
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510 if (!Py_FrozenFlag) |
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511 fprintf(stderr, |
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512 "Could not find platform independent libraries <prefix>\n"); |
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513 strncpy(prefix, PREFIX, MAXPATHLEN); |
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514 joinpath(prefix, lib_python); |
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515 } |
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516 else |
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517 reduce(prefix); |
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518 |
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519 strncpy(zip_path, prefix, MAXPATHLEN); |
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520 zip_path[MAXPATHLEN] = '\0'; |
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521 if (pfound > 0) { /* Use the reduced prefix returned by Py_GetPrefix() */ |
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522 reduce(zip_path); |
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523 reduce(zip_path); |
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524 } |
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525 else |
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526 strncpy(zip_path, PREFIX, MAXPATHLEN); |
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527 joinpath(zip_path, "lib/python00.zip"); |
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528 bufsz = strlen(zip_path); /* Replace "00" with version */ |
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529 zip_path[bufsz - 6] = VERSION[0]; |
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530 zip_path[bufsz - 5] = VERSION[2]; |
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531 |
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532 if (!(efound = search_for_exec_prefix(argv0_path, home))) { |
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533 if (!Py_FrozenFlag) |
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534 fprintf(stderr, |
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535 "Could not find platform dependent libraries <exec_prefix>\n"); |
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536 strncpy(exec_prefix, EXEC_PREFIX, MAXPATHLEN); |
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537 joinpath(exec_prefix, "lib/lib-dynload"); |
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538 } |
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539 /* If we found EXEC_PREFIX do *not* reduce it! (Yet.) */ |
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540 |
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541 if ((!pfound || !efound) && !Py_FrozenFlag) |
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542 fprintf(stderr, |
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543 "Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]\n"); |
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544 |
|
545 /* Calculate size of return buffer. |
|
546 */ |
|
547 bufsz = 0; |
|
548 |
|
549 if (rtpypath) |
|
550 bufsz += strlen(rtpypath) + 1; |
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551 |
|
552 prefixsz = strlen(prefix) + 1; |
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553 |
|
554 while (1) { |
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555 char *delim = strchr(defpath, DELIM); |
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556 |
|
557 if (defpath[0] != SEP) |
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558 /* Paths are relative to prefix */ |
|
559 bufsz += prefixsz; |
|
560 |
|
561 if (delim) |
|
562 bufsz += delim - defpath + 1; |
|
563 else { |
|
564 bufsz += strlen(defpath) + 1; |
|
565 break; |
|
566 } |
|
567 defpath = delim + 1; |
|
568 } |
|
569 |
|
570 bufsz += strlen(zip_path) + 1; |
|
571 bufsz += strlen(exec_prefix) + 1; |
|
572 |
|
573 /* This is the only malloc call in this file */ |
|
574 buf = (char *)PyMem_Malloc(bufsz); |
|
575 |
|
576 if (buf == NULL) { |
|
577 /* We can't exit, so print a warning and limp along */ |
|
578 fprintf(stderr, "Not enough memory for dynamic PYTHONPATH.\n"); |
|
579 fprintf(stderr, "Using default static PYTHONPATH.\n"); |
|
580 module_search_path = PYTHONPATH; |
|
581 } |
|
582 else { |
|
583 /* Run-time value of $PYTHONPATH goes first */ |
|
584 if (rtpypath) { |
|
585 strcpy(buf, rtpypath); |
|
586 strcat(buf, delimiter); |
|
587 } |
|
588 else |
|
589 buf[0] = '\0'; |
|
590 |
|
591 /* Next is the default zip path */ |
|
592 strcat(buf, zip_path); |
|
593 strcat(buf, delimiter); |
|
594 |
|
595 /* Next goes merge of compile-time $PYTHONPATH with |
|
596 * dynamically located prefix. |
|
597 */ |
|
598 defpath = pythonpath; |
|
599 while (1) { |
|
600 char *delim = strchr(defpath, DELIM); |
|
601 |
|
602 if (defpath[0] != SEP) { |
|
603 strcat(buf, prefix); |
|
604 strcat(buf, separator); |
|
605 } |
|
606 |
|
607 if (delim) { |
|
608 size_t len = delim - defpath + 1; |
|
609 size_t end = strlen(buf) + len; |
|
610 strncat(buf, defpath, len); |
|
611 *(buf + end) = '\0'; |
|
612 } |
|
613 else { |
|
614 strcat(buf, defpath); |
|
615 break; |
|
616 } |
|
617 defpath = delim + 1; |
|
618 } |
|
619 strcat(buf, delimiter); |
|
620 |
|
621 /* Finally, on goes the directory for dynamic-load modules */ |
|
622 strcat(buf, exec_prefix); |
|
623 |
|
624 /* And publish the results */ |
|
625 module_search_path = buf; |
|
626 } |
|
627 |
|
628 /* Reduce prefix and exec_prefix to their essence, |
|
629 * e.g. /usr/local/lib/python1.5 is reduced to /usr/local. |
|
630 * If we're loading relative to the build directory, |
|
631 * return the compiled-in defaults instead. |
|
632 */ |
|
633 if (pfound > 0) { |
|
634 reduce(prefix); |
|
635 reduce(prefix); |
|
636 /* The prefix is the root directory, but reduce() chopped |
|
637 * off the "/". */ |
|
638 if (!prefix[0]) |
|
639 strcpy(prefix, separator); |
|
640 } |
|
641 else |
|
642 strncpy(prefix, PREFIX, MAXPATHLEN); |
|
643 |
|
644 if (efound > 0) { |
|
645 reduce(exec_prefix); |
|
646 reduce(exec_prefix); |
|
647 reduce(exec_prefix); |
|
648 if (!exec_prefix[0]) |
|
649 strcpy(exec_prefix, separator); |
|
650 } |
|
651 else |
|
652 strncpy(exec_prefix, EXEC_PREFIX, MAXPATHLEN); |
|
653 } |
|
654 |
|
655 |
|
656 /* External interface */ |
|
657 |
|
658 char * |
|
659 Py_GetPath(void) |
|
660 { |
|
661 if (!module_search_path) |
|
662 calculate_path(); |
|
663 return module_search_path; |
|
664 } |
|
665 |
|
666 char * |
|
667 Py_GetPrefix(void) |
|
668 { |
|
669 if (!module_search_path) |
|
670 calculate_path(); |
|
671 return prefix; |
|
672 } |
|
673 |
|
674 char * |
|
675 Py_GetExecPrefix(void) |
|
676 { |
|
677 if (!module_search_path) |
|
678 calculate_path(); |
|
679 return exec_prefix; |
|
680 } |
|
681 |
|
682 char * |
|
683 Py_GetProgramFullPath(void) |
|
684 { |
|
685 if (!module_search_path) |
|
686 calculate_path(); |
|
687 return progpath; |
|
688 } |
|
689 |
|
690 |
|
691 #ifdef __cplusplus |
|
692 } |
|
693 #endif |
|
694 |