Guido van Rossum | 582646a | 1996-05-28 22:30:17 +0000 | [diff] [blame] | 1 | /* Return the initial module search path. */ |
| 2 | |
Guido van Rossum | 667d704 | 1995-08-04 04:20:48 +0000 | [diff] [blame] | 3 | #include "Python.h" |
| 4 | #include "osdefs.h" |
| 5 | |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 6 | #include <sys/types.h> |
Guido van Rossum | 21f8497 | 1997-06-02 22:18:31 +0000 | [diff] [blame] | 7 | #include <string.h> |
Guido van Rossum | 667d704 | 1995-08-04 04:20:48 +0000 | [diff] [blame] | 8 | |
Brett Cannon | f6af76d | 2004-06-26 04:03:06 +0000 | [diff] [blame] | 9 | #ifdef __APPLE__ |
Guido van Rossum | 54ecc3d | 1999-01-27 17:53:11 +0000 | [diff] [blame] | 10 | #include <mach-o/dyld.h> |
| 11 | #endif |
| 12 | |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 13 | /* Search in some common locations for the associated Python libraries. |
| 14 | * |
| 15 | * Two directories must be found, the platform independent directory |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 16 | * (prefix), containing the common .py and .pyc files, and the platform |
| 17 | * dependent directory (exec_prefix), containing the shared library |
| 18 | * modules. Note that prefix and exec_prefix can be the same directory, |
| 19 | * but for some installations, they are different. |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 20 | * |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 21 | * Py_GetPath() carries out separate searches for prefix and exec_prefix. |
| 22 | * Each search tries a number of different locations until a ``landmark'' |
| 23 | * file or directory is found. If no prefix or exec_prefix is found, a |
| 24 | * warning message is issued and the preprocessor defined PREFIX and |
| 25 | * EXEC_PREFIX are used (even though they will not work); python carries on |
| 26 | * as best as is possible, but most imports will fail. |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 27 | * |
| 28 | * Before any searches are done, the location of the executable is |
Guido van Rossum | d8faa36 | 2007-04-27 19:54:29 +0000 | [diff] [blame] | 29 | * determined. If argv[0] has one or more slashes in it, it is used |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 30 | * unchanged. Otherwise, it must have been invoked from the shell's path, |
| 31 | * so we search $PATH for the named executable and use that. If the |
| 32 | * executable was not found on $PATH (or there was no $PATH environment |
| 33 | * variable), the original argv[0] string is used. |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 34 | * |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 35 | * Next, the executable location is examined to see if it is a symbolic |
| 36 | * link. If so, the link is chased (correctly interpreting a relative |
| 37 | * pathname if one is found) and the directory of the link target is used. |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 38 | * |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 39 | * Finally, argv0_path is set to the directory containing the executable |
| 40 | * (i.e. the last component is stripped). |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 41 | * |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 42 | * With argv0_path in hand, we perform a number of steps. The same steps |
| 43 | * are performed for prefix and for exec_prefix, but with a different |
| 44 | * landmark. |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 45 | * |
| 46 | * Step 1. Are we running python out of the build directory? This is |
| 47 | * checked by looking for a different kind of landmark relative to |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 48 | * argv0_path. For prefix, the landmark's path is derived from the VPATH |
| 49 | * preprocessor variable (taking into account that its value is almost, but |
| 50 | * not quite, what we need). For exec_prefix, the landmark is |
| 51 | * Modules/Setup. If the landmark is found, we're done. |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 52 | * |
| 53 | * For the remaining steps, the prefix landmark will always be |
Jeremy Hylton | 847a996 | 2000-05-26 21:49:07 +0000 | [diff] [blame] | 54 | * lib/python$VERSION/os.py and the exec_prefix will always be |
Guido van Rossum | 266033e | 1997-10-20 23:20:32 +0000 | [diff] [blame] | 55 | * lib/python$VERSION/lib-dynload, where $VERSION is Python's version |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 56 | * number as supplied by the Makefile. Note that this means that no more |
| 57 | * build directory checking is performed; if the first step did not find |
| 58 | * the landmarks, the assumption is that python is running from an |
| 59 | * installed setup. |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 60 | * |
| 61 | * Step 2. See if the $PYTHONHOME environment variable points to the |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 62 | * installed location of the Python libraries. If $PYTHONHOME is set, then |
| 63 | * it points to prefix and exec_prefix. $PYTHONHOME can be a single |
| 64 | * directory, which is used for both, or the prefix and exec_prefix |
| 65 | * directories separated by a colon. |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 66 | * |
| 67 | * Step 3. Try to find prefix and exec_prefix relative to argv0_path, |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 68 | * backtracking up the path until it is exhausted. This is the most common |
| 69 | * step to succeed. Note that if prefix and exec_prefix are different, |
| 70 | * exec_prefix is more likely to be found; however if exec_prefix is a |
| 71 | * subdirectory of prefix, both will be found. |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 72 | * |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 73 | * Step 4. Search the directories pointed to by the preprocessor variables |
| 74 | * PREFIX and EXEC_PREFIX. These are supplied by the Makefile but can be |
| 75 | * passed in as options to the configure script. |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 76 | * |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 77 | * That's it! |
| 78 | * |
| 79 | * Well, almost. Once we have determined prefix and exec_prefix, the |
Thomas Wouters | 7e47402 | 2000-07-16 12:04:32 +0000 | [diff] [blame] | 80 | * preprocessor variable PYTHONPATH is used to construct a path. Each |
Barry Warsaw | 9012603 | 1997-04-11 20:27:03 +0000 | [diff] [blame] | 81 | * relative path on PYTHONPATH is prefixed with prefix. Then the directory |
| 82 | * containing the shared library modules is appended. The environment |
| 83 | * variable $PYTHONPATH is inserted in front of it all. Finally, the |
| 84 | * prefix and exec_prefix globals are tweaked so they reflect the values |
| 85 | * expected by other code, by stripping the "lib/python$VERSION/..." stuff |
| 86 | * off. If either points to the build directory, the globals are reset to |
| 87 | * the corresponding preprocessor variables (so sys.prefix will reflect the |
| 88 | * installation location, even though sys.path points into the build |
| 89 | * directory). This seems to make more sense given that currently the only |
| 90 | * known use of sys.prefix and sys.exec_prefix is for the ILU installation |
| 91 | * process to find the installed Python tree. |
| 92 | */ |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 93 | |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 94 | #ifdef __cplusplus |
| 95 | extern "C" { |
| 96 | #endif |
| 97 | |
| 98 | |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 99 | #ifndef VERSION |
Guido van Rossum | d0e74ea | 2001-01-23 01:57:40 +0000 | [diff] [blame] | 100 | #define VERSION "2.1" |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 101 | #endif |
| 102 | |
| 103 | #ifndef VPATH |
| 104 | #define VPATH "." |
Guido van Rossum | 667d704 | 1995-08-04 04:20:48 +0000 | [diff] [blame] | 105 | #endif |
| 106 | |
Guido van Rossum | c34c9a5 | 1996-06-12 04:20:27 +0000 | [diff] [blame] | 107 | #ifndef PREFIX |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 108 | # ifdef __VMS |
| 109 | # define PREFIX "" |
| 110 | # else |
| 111 | # define PREFIX "/usr/local" |
| 112 | # endif |
Guido van Rossum | c34c9a5 | 1996-06-12 04:20:27 +0000 | [diff] [blame] | 113 | #endif |
| 114 | |
| 115 | #ifndef EXEC_PREFIX |
Guido van Rossum | 6e12d56 | 1996-07-30 20:36:12 +0000 | [diff] [blame] | 116 | #define EXEC_PREFIX PREFIX |
Guido van Rossum | c34c9a5 | 1996-06-12 04:20:27 +0000 | [diff] [blame] | 117 | #endif |
| 118 | |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 119 | #ifndef PYTHONPATH |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 120 | #define PYTHONPATH PREFIX "/lib/python" VERSION ":" \ |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 121 | EXEC_PREFIX "/lib/python" VERSION "/lib-dynload" |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 122 | #endif |
Guido van Rossum | 667d704 | 1995-08-04 04:20:48 +0000 | [diff] [blame] | 123 | |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 124 | #ifndef LANDMARK |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 125 | #define LANDMARK L"os.py" |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 126 | #endif |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 127 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 128 | static wchar_t prefix[MAXPATHLEN+1]; |
| 129 | static wchar_t exec_prefix[MAXPATHLEN+1]; |
| 130 | static wchar_t progpath[MAXPATHLEN+1]; |
| 131 | static wchar_t *module_search_path = NULL; |
| 132 | static wchar_t lib_python[] = L"lib/python" VERSION; |
| 133 | |
| 134 | /* In principle, this should use HAVE__WSTAT, and _wstat |
| 135 | should be detected by autoconf. However, no current |
| 136 | POSIX system provides that function, so testing for |
| 137 | it is pointless. */ |
| 138 | #ifndef MS_WINDOWS |
| 139 | static int |
| 140 | _wstat(const wchar_t* path, struct stat *buf) |
| 141 | { |
| 142 | char fname[PATH_MAX]; |
| 143 | size_t res = wcstombs(fname, path, sizeof(fname)); |
| 144 | if (res == (size_t)-1) { |
| 145 | errno = EINVAL; |
| 146 | return -1; |
| 147 | } |
| 148 | return stat(fname, buf); |
| 149 | } |
| 150 | #endif |
| 151 | |
| 152 | #ifndef MS_WINDOWS |
| 153 | static wchar_t* |
| 154 | _wgetcwd(wchar_t *buf, size_t size) |
| 155 | { |
| 156 | char fname[PATH_MAX]; |
| 157 | if (getcwd(fname, PATH_MAX) == NULL) |
| 158 | return NULL; |
| 159 | if (mbstowcs(buf, fname, size) >= size) { |
| 160 | errno = ERANGE; |
| 161 | return NULL; |
| 162 | } |
| 163 | return buf; |
| 164 | } |
| 165 | #endif |
| 166 | |
| 167 | #ifdef HAVE_READLINK |
| 168 | int |
| 169 | _Py_wreadlink(const wchar_t *path, wchar_t *buf, size_t bufsiz) |
| 170 | { |
| 171 | char cbuf[PATH_MAX]; |
| 172 | char cpath[PATH_MAX]; |
| 173 | int res; |
| 174 | size_t r1 = wcstombs(cpath, path, PATH_MAX); |
| 175 | if (r1 == (size_t)-1 || r1 >= PATH_MAX) { |
| 176 | errno = EINVAL; |
| 177 | return -1; |
| 178 | } |
| 179 | res = (int)readlink(cpath, cbuf, PATH_MAX); |
| 180 | if (res == -1) |
| 181 | return -1; |
| 182 | if (res == PATH_MAX) { |
| 183 | errno = EINVAL; |
| 184 | return -1; |
| 185 | } |
| 186 | r1 = mbstowcs(buf, cbuf, bufsiz); |
| 187 | if (r1 == -1) { |
| 188 | errno = EINVAL; |
| 189 | return -1; |
| 190 | } |
| 191 | return (int)r1; |
| 192 | |
| 193 | } |
| 194 | #endif |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 195 | |
| 196 | static void |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 197 | reduce(wchar_t *dir) |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 198 | { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 199 | size_t i = wcslen(dir); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 200 | while (i > 0 && dir[i] != SEP) |
| 201 | --i; |
| 202 | dir[i] = '\0'; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 203 | } |
Guido van Rossum | d29806c | 1998-01-19 22:06:22 +0000 | [diff] [blame] | 204 | |
| 205 | |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 206 | static int |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 207 | isfile(wchar_t *filename) /* Is file, not directory */ |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 208 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 209 | struct stat buf; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 210 | if (_wstat(filename, &buf) != 0) |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 211 | return 0; |
| 212 | if (!S_ISREG(buf.st_mode)) |
| 213 | return 0; |
| 214 | return 1; |
Guido van Rossum | d29806c | 1998-01-19 22:06:22 +0000 | [diff] [blame] | 215 | } |
| 216 | |
| 217 | |
| 218 | static int |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 219 | ismodule(wchar_t *filename) /* Is module -- check for .pyc/.pyo too */ |
Guido van Rossum | d29806c | 1998-01-19 22:06:22 +0000 | [diff] [blame] | 220 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 221 | if (isfile(filename)) |
| 222 | return 1; |
Guido van Rossum | d29806c | 1998-01-19 22:06:22 +0000 | [diff] [blame] | 223 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 224 | /* Check for the compiled version of prefix. */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 225 | if (wcslen(filename) < MAXPATHLEN) { |
| 226 | wcscat(filename, Py_OptimizeFlag ? L"o" : L"c"); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 227 | if (isfile(filename)) |
| 228 | return 1; |
| 229 | } |
| 230 | return 0; |
Guido van Rossum | d29806c | 1998-01-19 22:06:22 +0000 | [diff] [blame] | 231 | } |
| 232 | |
| 233 | |
| 234 | static int |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 235 | isxfile(wchar_t *filename) /* Is executable file */ |
Guido van Rossum | d29806c | 1998-01-19 22:06:22 +0000 | [diff] [blame] | 236 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 237 | struct stat buf; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 238 | if (_wstat(filename, &buf) != 0) |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 239 | return 0; |
| 240 | if (!S_ISREG(buf.st_mode)) |
| 241 | return 0; |
| 242 | if ((buf.st_mode & 0111) == 0) |
| 243 | return 0; |
| 244 | return 1; |
Guido van Rossum | d29806c | 1998-01-19 22:06:22 +0000 | [diff] [blame] | 245 | } |
| 246 | |
| 247 | |
| 248 | static int |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 249 | isdir(wchar_t *filename) /* Is directory */ |
Guido van Rossum | d29806c | 1998-01-19 22:06:22 +0000 | [diff] [blame] | 250 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 251 | struct stat buf; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 252 | if (_wstat(filename, &buf) != 0) |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 253 | return 0; |
| 254 | if (!S_ISDIR(buf.st_mode)) |
| 255 | return 0; |
| 256 | return 1; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 257 | } |
| 258 | |
| 259 | |
Tim Peters | ec8c5a9 | 2004-08-08 01:00:47 +0000 | [diff] [blame] | 260 | /* Add a path component, by appending stuff to buffer. |
| 261 | buffer must have at least MAXPATHLEN + 1 bytes allocated, and contain a |
| 262 | NUL-terminated string with no more than MAXPATHLEN characters (not counting |
| 263 | the trailing NUL). It's a fatal error if it contains a string longer than |
| 264 | that (callers must be careful!). If these requirements are met, it's |
| 265 | guaranteed that buffer will still be a NUL-terminated string with no more |
| 266 | than MAXPATHLEN characters at exit. If stuff is too long, only as much of |
| 267 | stuff as fits will be appended. |
Jeremy Hylton | 6372fe1 | 2000-09-27 20:51:17 +0000 | [diff] [blame] | 268 | */ |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 269 | static void |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 270 | joinpath(wchar_t *buffer, wchar_t *stuff) |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 271 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 272 | size_t n, k; |
| 273 | if (stuff[0] == SEP) |
| 274 | n = 0; |
| 275 | else { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 276 | n = wcslen(buffer); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 277 | if (n > 0 && buffer[n-1] != SEP && n < MAXPATHLEN) |
| 278 | buffer[n++] = SEP; |
| 279 | } |
Tim Peters | ec8c5a9 | 2004-08-08 01:00:47 +0000 | [diff] [blame] | 280 | if (n > MAXPATHLEN) |
| 281 | Py_FatalError("buffer overflow in getpath.c's joinpath()"); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 282 | k = wcslen(stuff); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 283 | if (n + k > MAXPATHLEN) |
| 284 | k = MAXPATHLEN - n; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 285 | wcsncpy(buffer+n, stuff, k); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 286 | buffer[n+k] = '\0'; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 287 | } |
| 288 | |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 289 | /* copy_absolute requires that path be allocated at least |
| 290 | MAXPATHLEN + 1 bytes and that p be no more than MAXPATHLEN bytes. */ |
Jeremy Hylton | 7198ba9 | 2000-09-25 17:00:24 +0000 | [diff] [blame] | 291 | static void |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 292 | copy_absolute(wchar_t *path, wchar_t *p) |
Jeremy Hylton | 7198ba9 | 2000-09-25 17:00:24 +0000 | [diff] [blame] | 293 | { |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 294 | if (p[0] == SEP) |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 295 | wcscpy(path, p); |
Jeremy Hylton | 7198ba9 | 2000-09-25 17:00:24 +0000 | [diff] [blame] | 296 | else { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 297 | _wgetcwd(path, MAXPATHLEN); |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 298 | if (p[0] == '.' && p[1] == SEP) |
| 299 | p += 2; |
| 300 | joinpath(path, p); |
Jeremy Hylton | 7198ba9 | 2000-09-25 17:00:24 +0000 | [diff] [blame] | 301 | } |
| 302 | } |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 303 | |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 304 | /* absolutize() requires that path be allocated at least MAXPATHLEN+1 bytes. */ |
| 305 | static void |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 306 | absolutize(wchar_t *path) |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 307 | { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 308 | wchar_t buffer[MAXPATHLEN + 1]; |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 309 | |
| 310 | if (path[0] == SEP) |
| 311 | return; |
| 312 | copy_absolute(buffer, path); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 313 | wcscpy(path, buffer); |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 314 | } |
| 315 | |
| 316 | /* search_for_prefix requires that argv0_path be no more than MAXPATHLEN |
Jeremy Hylton | 6372fe1 | 2000-09-27 20:51:17 +0000 | [diff] [blame] | 317 | bytes long. |
| 318 | */ |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 319 | static int |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 320 | search_for_prefix(wchar_t *argv0_path, wchar_t *home) |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 321 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 322 | size_t n; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 323 | wchar_t *vpath; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 324 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 325 | /* If PYTHONHOME is set, we believe it unconditionally */ |
| 326 | if (home) { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 327 | wchar_t *delim; |
| 328 | wcsncpy(prefix, home, MAXPATHLEN); |
| 329 | delim = wcschr(prefix, DELIM); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 330 | if (delim) |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 331 | *delim = L'\0'; |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 332 | joinpath(prefix, lib_python); |
| 333 | joinpath(prefix, LANDMARK); |
| 334 | return 1; |
| 335 | } |
Jeremy Hylton | 847a996 | 2000-05-26 21:49:07 +0000 | [diff] [blame] | 336 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 337 | /* Check to see if argv[0] is in the build directory */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 338 | wcscpy(prefix, argv0_path); |
| 339 | joinpath(prefix, L"Modules/Setup"); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 340 | if (isfile(prefix)) { |
Neil Schemenauer | 6cf0702 | 2001-01-24 17:13:11 +0000 | [diff] [blame] | 341 | /* Check VPATH to see if argv0_path is in the build directory. */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 342 | vpath = L"" VPATH; |
| 343 | wcscpy(prefix, argv0_path); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 344 | joinpath(prefix, vpath); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 345 | joinpath(prefix, L"Lib"); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 346 | joinpath(prefix, LANDMARK); |
| 347 | if (ismodule(prefix)) |
| 348 | return -1; |
| 349 | } |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 350 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 351 | /* Search from argv0_path, until root is found */ |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 352 | copy_absolute(prefix, argv0_path); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 353 | do { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 354 | n = wcslen(prefix); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 355 | joinpath(prefix, lib_python); |
| 356 | joinpath(prefix, LANDMARK); |
| 357 | if (ismodule(prefix)) |
| 358 | return 1; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 359 | prefix[n] = L'\0'; |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 360 | reduce(prefix); |
| 361 | } while (prefix[0]); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 362 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 363 | /* Look at configure's PREFIX */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 364 | wcsncpy(prefix, L"" PREFIX, MAXPATHLEN); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 365 | joinpath(prefix, lib_python); |
| 366 | joinpath(prefix, LANDMARK); |
| 367 | if (ismodule(prefix)) |
| 368 | return 1; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 369 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 370 | /* Fail */ |
| 371 | return 0; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 372 | } |
| 373 | |
| 374 | |
Jeremy Hylton | 6372fe1 | 2000-09-27 20:51:17 +0000 | [diff] [blame] | 375 | /* search_for_exec_prefix requires that argv0_path be no more than |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 376 | MAXPATHLEN bytes long. |
Jeremy Hylton | 6372fe1 | 2000-09-27 20:51:17 +0000 | [diff] [blame] | 377 | */ |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 378 | static int |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 379 | search_for_exec_prefix(wchar_t *argv0_path, wchar_t *home) |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 380 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 381 | size_t n; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 382 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 383 | /* If PYTHONHOME is set, we believe it unconditionally */ |
| 384 | if (home) { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 385 | wchar_t *delim; |
| 386 | delim = wcschr(home, DELIM); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 387 | if (delim) |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 388 | wcsncpy(exec_prefix, delim+1, MAXPATHLEN); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 389 | else |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 390 | wcsncpy(exec_prefix, home, MAXPATHLEN); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 391 | joinpath(exec_prefix, lib_python); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 392 | joinpath(exec_prefix, L"lib-dynload"); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 393 | return 1; |
| 394 | } |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 395 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 396 | /* Check to see if argv[0] is in the build directory */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 397 | wcscpy(exec_prefix, argv0_path); |
| 398 | joinpath(exec_prefix, L"Modules/Setup"); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 399 | if (isfile(exec_prefix)) { |
| 400 | reduce(exec_prefix); |
| 401 | return -1; |
| 402 | } |
Jeremy Hylton | 847a996 | 2000-05-26 21:49:07 +0000 | [diff] [blame] | 403 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 404 | /* Search from argv0_path, until root is found */ |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 405 | copy_absolute(exec_prefix, argv0_path); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 406 | do { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 407 | n = wcslen(exec_prefix); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 408 | joinpath(exec_prefix, lib_python); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 409 | joinpath(exec_prefix, L"lib-dynload"); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 410 | if (isdir(exec_prefix)) |
| 411 | return 1; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 412 | exec_prefix[n] = L'\0'; |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 413 | reduce(exec_prefix); |
| 414 | } while (exec_prefix[0]); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 415 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 416 | /* Look at configure's EXEC_PREFIX */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 417 | wcsncpy(exec_prefix, L"" EXEC_PREFIX, MAXPATHLEN); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 418 | joinpath(exec_prefix, lib_python); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 419 | joinpath(exec_prefix, L"lib-dynload"); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 420 | if (isdir(exec_prefix)) |
| 421 | return 1; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 422 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 423 | /* Fail */ |
| 424 | return 0; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 425 | } |
| 426 | |
| 427 | |
| 428 | static void |
Thomas Wouters | f3f33dc | 2000-07-21 06:00:07 +0000 | [diff] [blame] | 429 | calculate_path(void) |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 430 | { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 431 | extern wchar_t *Py_GetProgramName(void); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 432 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 433 | static wchar_t delimiter[2] = {DELIM, '\0'}; |
| 434 | static wchar_t separator[2] = {SEP, '\0'}; |
| 435 | wchar_t *pythonpath = L"" PYTHONPATH; |
| 436 | char *_rtpypath = Py_GETENV("PYTHONPATH"); /* XXX use wide version on Windows */ |
| 437 | wchar_t rtpypath[MAXPATHLEN+1]; |
| 438 | wchar_t *home = Py_GetPythonHome(); |
| 439 | char *_path = getenv("PATH"); |
| 440 | wchar_t wpath[MAXPATHLEN+1]; |
| 441 | wchar_t *path = NULL; |
| 442 | wchar_t *prog = Py_GetProgramName(); |
| 443 | wchar_t argv0_path[MAXPATHLEN+1]; |
| 444 | wchar_t zip_path[MAXPATHLEN+1]; |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 445 | int pfound, efound; /* 1 if found; -1 if found build directory */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 446 | wchar_t *buf; |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 447 | size_t bufsz; |
| 448 | size_t prefixsz; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 449 | wchar_t *defpath = pythonpath; |
Guido van Rossum | 54ecc3d | 1999-01-27 17:53:11 +0000 | [diff] [blame] | 450 | #ifdef WITH_NEXT_FRAMEWORK |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 451 | NSModule pythonModule; |
Guido van Rossum | 54ecc3d | 1999-01-27 17:53:11 +0000 | [diff] [blame] | 452 | #endif |
Jack Jansen | 1afd480 | 2004-06-03 14:33:03 +0000 | [diff] [blame] | 453 | #ifdef __APPLE__ |
Skip Montanaro | 2b47445 | 2006-01-05 10:49:13 +0000 | [diff] [blame] | 454 | #if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_4 |
Brett Cannon | bd9c3f7 | 2005-09-16 02:43:35 +0000 | [diff] [blame] | 455 | uint32_t nsexeclength = MAXPATHLEN; |
Skip Montanaro | 2b47445 | 2006-01-05 10:49:13 +0000 | [diff] [blame] | 456 | #else |
| 457 | unsigned long nsexeclength = MAXPATHLEN; |
| 458 | #endif |
Jack Jansen | 1afd480 | 2004-06-03 14:33:03 +0000 | [diff] [blame] | 459 | #endif |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 460 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 461 | if (_path) { |
| 462 | size_t r = mbstowcs(wpath, _path, MAXPATHLEN+1); |
| 463 | path = wpath; |
| 464 | if (r == (size_t)-1 || r > MAXPATHLEN) { |
| 465 | /* Could not convert PATH, or it's too long. */ |
| 466 | path = NULL; |
| 467 | } |
| 468 | } |
| 469 | |
Jack Jansen | 55070f5 | 2001-12-02 23:56:28 +0000 | [diff] [blame] | 470 | /* If there is no slash in the argv0 path, then we have to |
| 471 | * assume python is on the user's $PATH, since there's no |
| 472 | * other way to find a directory to start the search from. If |
| 473 | * $PATH isn't exported, you lose. |
| 474 | */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 475 | if (wcschr(prog, SEP)) |
| 476 | wcsncpy(progpath, prog, MAXPATHLEN); |
Jack Jansen | 1afd480 | 2004-06-03 14:33:03 +0000 | [diff] [blame] | 477 | #ifdef __APPLE__ |
| 478 | /* On Mac OS X, if a script uses an interpreter of the form |
| 479 | * "#!/opt/python2.3/bin/python", the kernel only passes "python" |
| 480 | * as argv[0], which falls through to the $PATH search below. |
| 481 | * If /opt/python2.3/bin isn't in your path, or is near the end, |
| 482 | * this algorithm may incorrectly find /usr/bin/python. To work |
| 483 | * around this, we can use _NSGetExecutablePath to get a better |
| 484 | * hint of what the intended interpreter was, although this |
| 485 | * will fail if a relative path was used. but in that case, |
| 486 | * absolutize() should help us out below |
| 487 | */ |
| 488 | else if(0 == _NSGetExecutablePath(progpath, &nsexeclength) && progpath[0] == SEP) |
| 489 | ; |
Brett Cannon | 6cc4814 | 2004-06-24 00:48:44 +0000 | [diff] [blame] | 490 | #endif /* __APPLE__ */ |
Jack Jansen | 55070f5 | 2001-12-02 23:56:28 +0000 | [diff] [blame] | 491 | else if (path) { |
| 492 | while (1) { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 493 | wchar_t *delim = wcschr(path, DELIM); |
Jack Jansen | 55070f5 | 2001-12-02 23:56:28 +0000 | [diff] [blame] | 494 | |
| 495 | if (delim) { |
| 496 | size_t len = delim - path; |
| 497 | if (len > MAXPATHLEN) |
| 498 | len = MAXPATHLEN; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 499 | wcsncpy(progpath, path, len); |
Jack Jansen | 55070f5 | 2001-12-02 23:56:28 +0000 | [diff] [blame] | 500 | *(progpath + len) = '\0'; |
| 501 | } |
| 502 | else |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 503 | wcsncpy(progpath, path, MAXPATHLEN); |
Jack Jansen | 55070f5 | 2001-12-02 23:56:28 +0000 | [diff] [blame] | 504 | |
| 505 | joinpath(progpath, prog); |
| 506 | if (isxfile(progpath)) |
| 507 | break; |
| 508 | |
| 509 | if (!delim) { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 510 | progpath[0] = L'\0'; |
Jack Jansen | 55070f5 | 2001-12-02 23:56:28 +0000 | [diff] [blame] | 511 | break; |
| 512 | } |
| 513 | path = delim + 1; |
| 514 | } |
| 515 | } |
| 516 | else |
| 517 | progpath[0] = '\0'; |
| 518 | if (progpath[0] != SEP) |
| 519 | absolutize(progpath); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 520 | wcsncpy(argv0_path, progpath, MAXPATHLEN); |
Neal Norwitz | bcf9f9e | 2002-09-13 14:35:56 +0000 | [diff] [blame] | 521 | argv0_path[MAXPATHLEN] = '\0'; |
Jack Jansen | 55070f5 | 2001-12-02 23:56:28 +0000 | [diff] [blame] | 522 | |
Guido van Rossum | 54ecc3d | 1999-01-27 17:53:11 +0000 | [diff] [blame] | 523 | #ifdef WITH_NEXT_FRAMEWORK |
Jack Jansen | 55070f5 | 2001-12-02 23:56:28 +0000 | [diff] [blame] | 524 | /* On Mac OS X we have a special case if we're running from a framework. |
| 525 | ** This is because the python home should be set relative to the library, |
| 526 | ** which is in the framework, not relative to the executable, which may |
| 527 | ** be outside of the framework. Except when we're in the build directory... |
| 528 | */ |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 529 | pythonModule = NSModuleForSymbol(NSLookupAndBindSymbol("_Py_Initialize")); |
| 530 | /* Use dylib functions to find out where the framework was loaded from */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 531 | buf = (wchar_t *)NSLibraryNameForModule(pythonModule); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 532 | if (buf != NULL) { |
| 533 | /* We're in a framework. */ |
Jack Jansen | e925faf | 2001-08-15 01:14:40 +0000 | [diff] [blame] | 534 | /* See if we might be in the build directory. The framework in the |
| 535 | ** build directory is incomplete, it only has the .dylib and a few |
| 536 | ** needed symlinks, it doesn't have the Lib directories and such. |
| 537 | ** If we're running with the framework from the build directory we must |
| 538 | ** be running the interpreter in the build directory, so we use the |
| 539 | ** build-directory-specific logic to find Lib and such. |
| 540 | */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 541 | wcsncpy(argv0_path, buf, MAXPATHLEN); |
Jack Jansen | e925faf | 2001-08-15 01:14:40 +0000 | [diff] [blame] | 542 | reduce(argv0_path); |
| 543 | joinpath(argv0_path, lib_python); |
| 544 | joinpath(argv0_path, LANDMARK); |
| 545 | if (!ismodule(argv0_path)) { |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 546 | /* We are in the build directory so use the name of the |
| 547 | executable - we know that the absolute path is passed */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 548 | wcsncpy(argv0_path, prog, MAXPATHLEN); |
Jack Jansen | e925faf | 2001-08-15 01:14:40 +0000 | [diff] [blame] | 549 | } |
| 550 | else { |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 551 | /* Use the location of the library as the progpath */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 552 | wcsncpy(argv0_path, buf, MAXPATHLEN); |
Jack Jansen | e925faf | 2001-08-15 01:14:40 +0000 | [diff] [blame] | 553 | } |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 554 | } |
Guido van Rossum | 54ecc3d | 1999-01-27 17:53:11 +0000 | [diff] [blame] | 555 | #endif |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 556 | |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 557 | #if HAVE_READLINK |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 558 | { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 559 | wchar_t tmpbuffer[MAXPATHLEN+1]; |
| 560 | int linklen = _Py_wreadlink(progpath, tmpbuffer, MAXPATHLEN); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 561 | while (linklen != -1) { |
| 562 | /* It's not null terminated! */ |
| 563 | tmpbuffer[linklen] = '\0'; |
| 564 | if (tmpbuffer[0] == SEP) |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 565 | /* tmpbuffer should never be longer than MAXPATHLEN, |
| 566 | but extra check does not hurt */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 567 | wcsncpy(argv0_path, tmpbuffer, MAXPATHLEN); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 568 | else { |
| 569 | /* Interpret relative to progpath */ |
| 570 | reduce(argv0_path); |
| 571 | joinpath(argv0_path, tmpbuffer); |
| 572 | } |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 573 | linklen = _Py_wreadlink(argv0_path, tmpbuffer, MAXPATHLEN); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 574 | } |
| 575 | } |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 576 | #endif /* HAVE_READLINK */ |
| 577 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 578 | reduce(argv0_path); |
Jeremy Hylton | 6372fe1 | 2000-09-27 20:51:17 +0000 | [diff] [blame] | 579 | /* At this point, argv0_path is guaranteed to be less than |
| 580 | MAXPATHLEN bytes long. |
| 581 | */ |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 582 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 583 | if (!(pfound = search_for_prefix(argv0_path, home))) { |
| 584 | if (!Py_FrozenFlag) |
| 585 | fprintf(stderr, |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 586 | "Could not find platform independent libraries <prefix>\n"); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 587 | wcsncpy(prefix, L"" PREFIX, MAXPATHLEN); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 588 | joinpath(prefix, lib_python); |
| 589 | } |
| 590 | else |
| 591 | reduce(prefix); |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 592 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 593 | wcsncpy(zip_path, prefix, MAXPATHLEN); |
| 594 | zip_path[MAXPATHLEN] = L'\0'; |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 595 | if (pfound > 0) { /* Use the reduced prefix returned by Py_GetPrefix() */ |
| 596 | reduce(zip_path); |
| 597 | reduce(zip_path); |
| 598 | } |
| 599 | else |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 600 | wcsncpy(zip_path, L"" PREFIX, MAXPATHLEN); |
| 601 | joinpath(zip_path, L"lib/python00.zip"); |
| 602 | bufsz = wcslen(zip_path); /* Replace "00" with version */ |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 603 | zip_path[bufsz - 6] = VERSION[0]; |
| 604 | zip_path[bufsz - 5] = VERSION[2]; |
| 605 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 606 | if (!(efound = search_for_exec_prefix(argv0_path, home))) { |
| 607 | if (!Py_FrozenFlag) |
| 608 | fprintf(stderr, |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 609 | "Could not find platform dependent libraries <exec_prefix>\n"); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 610 | wcsncpy(exec_prefix, L"" EXEC_PREFIX, MAXPATHLEN); |
| 611 | joinpath(exec_prefix, L"lib/lib-dynload"); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 612 | } |
| 613 | /* If we found EXEC_PREFIX do *not* reduce it! (Yet.) */ |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 614 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 615 | if ((!pfound || !efound) && !Py_FrozenFlag) |
| 616 | fprintf(stderr, |
| 617 | "Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]\n"); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 618 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 619 | /* Calculate size of return buffer. |
| 620 | */ |
| 621 | bufsz = 0; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 622 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 623 | if (_rtpypath) { |
| 624 | size_t s = mbstowcs(rtpypath, _rtpypath, sizeof(rtpypath)/sizeof(wchar_t)); |
| 625 | if (s == (size_t)-1 || s >=sizeof(rtpypath)) |
| 626 | /* XXX deal with errors more gracefully */ |
| 627 | _rtpypath = NULL; |
| 628 | if (_rtpypath) |
| 629 | bufsz += wcslen(rtpypath) + 1; |
| 630 | } |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 631 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 632 | prefixsz = wcslen(prefix) + 1; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 633 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 634 | while (1) { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 635 | wchar_t *delim = wcschr(defpath, DELIM); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 636 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 637 | if (defpath[0] != SEP) |
| 638 | /* Paths are relative to prefix */ |
| 639 | bufsz += prefixsz; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 640 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 641 | if (delim) |
| 642 | bufsz += delim - defpath + 1; |
| 643 | else { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 644 | bufsz += wcslen(defpath) + 1; |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 645 | break; |
| 646 | } |
| 647 | defpath = delim + 1; |
| 648 | } |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 649 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 650 | bufsz += wcslen(zip_path) + 1; |
| 651 | bufsz += wcslen(exec_prefix) + 1; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 652 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 653 | /* This is the only malloc call in this file */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 654 | buf = (wchar_t *)PyMem_Malloc(bufsz*sizeof(wchar_t)); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 655 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 656 | if (buf == NULL) { |
| 657 | /* We can't exit, so print a warning and limp along */ |
| 658 | fprintf(stderr, "Not enough memory for dynamic PYTHONPATH.\n"); |
| 659 | fprintf(stderr, "Using default static PYTHONPATH.\n"); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 660 | module_search_path = L"" PYTHONPATH; |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 661 | } |
| 662 | else { |
| 663 | /* Run-time value of $PYTHONPATH goes first */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 664 | if (_rtpypath) { |
| 665 | wcscpy(buf, rtpypath); |
| 666 | wcscat(buf, delimiter); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 667 | } |
| 668 | else |
| 669 | buf[0] = '\0'; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 670 | |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 671 | /* Next is the default zip path */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 672 | wcscat(buf, zip_path); |
| 673 | wcscat(buf, delimiter); |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 674 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 675 | /* Next goes merge of compile-time $PYTHONPATH with |
| 676 | * dynamically located prefix. |
| 677 | */ |
| 678 | defpath = pythonpath; |
| 679 | while (1) { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 680 | wchar_t *delim = wcschr(defpath, DELIM); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 681 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 682 | if (defpath[0] != SEP) { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 683 | wcscat(buf, prefix); |
| 684 | wcscat(buf, separator); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 685 | } |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 686 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 687 | if (delim) { |
| 688 | size_t len = delim - defpath + 1; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 689 | size_t end = wcslen(buf) + len; |
| 690 | wcsncat(buf, defpath, len); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 691 | *(buf + end) = '\0'; |
| 692 | } |
| 693 | else { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 694 | wcscat(buf, defpath); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 695 | break; |
| 696 | } |
| 697 | defpath = delim + 1; |
| 698 | } |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 699 | wcscat(buf, delimiter); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 700 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 701 | /* Finally, on goes the directory for dynamic-load modules */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 702 | wcscat(buf, exec_prefix); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 703 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 704 | /* And publish the results */ |
| 705 | module_search_path = buf; |
| 706 | } |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 707 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 708 | /* Reduce prefix and exec_prefix to their essence, |
| 709 | * e.g. /usr/local/lib/python1.5 is reduced to /usr/local. |
| 710 | * If we're loading relative to the build directory, |
| 711 | * return the compiled-in defaults instead. |
| 712 | */ |
| 713 | if (pfound > 0) { |
| 714 | reduce(prefix); |
| 715 | reduce(prefix); |
Georg Brandl | e393bf6 | 2006-02-20 17:37:36 +0000 | [diff] [blame] | 716 | /* The prefix is the root directory, but reduce() chopped |
| 717 | * off the "/". */ |
| 718 | if (!prefix[0]) |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 719 | wcscpy(prefix, separator); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 720 | } |
| 721 | else |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 722 | wcsncpy(prefix, L"" PREFIX, MAXPATHLEN); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 723 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 724 | if (efound > 0) { |
| 725 | reduce(exec_prefix); |
| 726 | reduce(exec_prefix); |
| 727 | reduce(exec_prefix); |
Georg Brandl | e393bf6 | 2006-02-20 17:37:36 +0000 | [diff] [blame] | 728 | if (!exec_prefix[0]) |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 729 | wcscpy(exec_prefix, separator); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 730 | } |
| 731 | else |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 732 | wcsncpy(exec_prefix, L"" EXEC_PREFIX, MAXPATHLEN); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 733 | } |
| 734 | |
| 735 | |
| 736 | /* External interface */ |
Guido van Rossum | 667d704 | 1995-08-04 04:20:48 +0000 | [diff] [blame] | 737 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 738 | wchar_t * |
Thomas Wouters | f3f33dc | 2000-07-21 06:00:07 +0000 | [diff] [blame] | 739 | Py_GetPath(void) |
Guido van Rossum | 667d704 | 1995-08-04 04:20:48 +0000 | [diff] [blame] | 740 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 741 | if (!module_search_path) |
| 742 | calculate_path(); |
| 743 | return module_search_path; |
Guido van Rossum | 667d704 | 1995-08-04 04:20:48 +0000 | [diff] [blame] | 744 | } |
Guido van Rossum | c34c9a5 | 1996-06-12 04:20:27 +0000 | [diff] [blame] | 745 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 746 | wchar_t * |
Thomas Wouters | f3f33dc | 2000-07-21 06:00:07 +0000 | [diff] [blame] | 747 | Py_GetPrefix(void) |
Guido van Rossum | c34c9a5 | 1996-06-12 04:20:27 +0000 | [diff] [blame] | 748 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 749 | if (!module_search_path) |
| 750 | calculate_path(); |
| 751 | return prefix; |
Guido van Rossum | c34c9a5 | 1996-06-12 04:20:27 +0000 | [diff] [blame] | 752 | } |
| 753 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 754 | wchar_t * |
Thomas Wouters | f3f33dc | 2000-07-21 06:00:07 +0000 | [diff] [blame] | 755 | Py_GetExecPrefix(void) |
Guido van Rossum | c34c9a5 | 1996-06-12 04:20:27 +0000 | [diff] [blame] | 756 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 757 | if (!module_search_path) |
| 758 | calculate_path(); |
| 759 | return exec_prefix; |
Guido van Rossum | c34c9a5 | 1996-06-12 04:20:27 +0000 | [diff] [blame] | 760 | } |
Guido van Rossum | 7929c6f | 1997-05-20 22:38:21 +0000 | [diff] [blame] | 761 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame^] | 762 | wchar_t * |
Thomas Wouters | f3f33dc | 2000-07-21 06:00:07 +0000 | [diff] [blame] | 763 | Py_GetProgramFullPath(void) |
Guido van Rossum | 7929c6f | 1997-05-20 22:38:21 +0000 | [diff] [blame] | 764 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 765 | if (!module_search_path) |
| 766 | calculate_path(); |
| 767 | return progpath; |
Guido van Rossum | 7929c6f | 1997-05-20 22:38:21 +0000 | [diff] [blame] | 768 | } |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 769 | |
| 770 | |
| 771 | #ifdef __cplusplus |
| 772 | } |
| 773 | #endif |
| 774 | |