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 | } |
Hirokazu Yamamoto | f824779 | 2008-09-09 13:56:11 +0000 | [diff] [blame^] | 186 | cbuf[res] = '\0'; /* buf will be null terminated */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 187 | r1 = mbstowcs(buf, cbuf, bufsiz); |
| 188 | if (r1 == -1) { |
| 189 | errno = EINVAL; |
| 190 | return -1; |
| 191 | } |
| 192 | return (int)r1; |
| 193 | |
| 194 | } |
| 195 | #endif |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 196 | |
| 197 | static void |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 198 | reduce(wchar_t *dir) |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 199 | { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 200 | size_t i = wcslen(dir); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 201 | while (i > 0 && dir[i] != SEP) |
| 202 | --i; |
| 203 | dir[i] = '\0'; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 204 | } |
Guido van Rossum | d29806c | 1998-01-19 22:06:22 +0000 | [diff] [blame] | 205 | |
| 206 | |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 207 | static int |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 208 | isfile(wchar_t *filename) /* Is file, not directory */ |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 209 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 210 | struct stat buf; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 211 | if (_wstat(filename, &buf) != 0) |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 212 | return 0; |
| 213 | if (!S_ISREG(buf.st_mode)) |
| 214 | return 0; |
| 215 | return 1; |
Guido van Rossum | d29806c | 1998-01-19 22:06:22 +0000 | [diff] [blame] | 216 | } |
| 217 | |
| 218 | |
| 219 | static int |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 220 | ismodule(wchar_t *filename) /* Is module -- check for .pyc/.pyo too */ |
Guido van Rossum | d29806c | 1998-01-19 22:06:22 +0000 | [diff] [blame] | 221 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 222 | if (isfile(filename)) |
| 223 | return 1; |
Guido van Rossum | d29806c | 1998-01-19 22:06:22 +0000 | [diff] [blame] | 224 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 225 | /* Check for the compiled version of prefix. */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 226 | if (wcslen(filename) < MAXPATHLEN) { |
| 227 | wcscat(filename, Py_OptimizeFlag ? L"o" : L"c"); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 228 | if (isfile(filename)) |
| 229 | return 1; |
| 230 | } |
| 231 | return 0; |
Guido van Rossum | d29806c | 1998-01-19 22:06:22 +0000 | [diff] [blame] | 232 | } |
| 233 | |
| 234 | |
| 235 | static int |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 236 | isxfile(wchar_t *filename) /* Is executable file */ |
Guido van Rossum | d29806c | 1998-01-19 22:06:22 +0000 | [diff] [blame] | 237 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 238 | struct stat buf; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 239 | if (_wstat(filename, &buf) != 0) |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 240 | return 0; |
| 241 | if (!S_ISREG(buf.st_mode)) |
| 242 | return 0; |
| 243 | if ((buf.st_mode & 0111) == 0) |
| 244 | return 0; |
| 245 | return 1; |
Guido van Rossum | d29806c | 1998-01-19 22:06:22 +0000 | [diff] [blame] | 246 | } |
| 247 | |
| 248 | |
| 249 | static int |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 250 | isdir(wchar_t *filename) /* Is directory */ |
Guido van Rossum | d29806c | 1998-01-19 22:06:22 +0000 | [diff] [blame] | 251 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 252 | struct stat buf; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 253 | if (_wstat(filename, &buf) != 0) |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 254 | return 0; |
| 255 | if (!S_ISDIR(buf.st_mode)) |
| 256 | return 0; |
| 257 | return 1; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 258 | } |
| 259 | |
| 260 | |
Tim Peters | ec8c5a9 | 2004-08-08 01:00:47 +0000 | [diff] [blame] | 261 | /* Add a path component, by appending stuff to buffer. |
| 262 | buffer must have at least MAXPATHLEN + 1 bytes allocated, and contain a |
| 263 | NUL-terminated string with no more than MAXPATHLEN characters (not counting |
| 264 | the trailing NUL). It's a fatal error if it contains a string longer than |
| 265 | that (callers must be careful!). If these requirements are met, it's |
| 266 | guaranteed that buffer will still be a NUL-terminated string with no more |
| 267 | than MAXPATHLEN characters at exit. If stuff is too long, only as much of |
| 268 | stuff as fits will be appended. |
Jeremy Hylton | 6372fe1 | 2000-09-27 20:51:17 +0000 | [diff] [blame] | 269 | */ |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 270 | static void |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 271 | joinpath(wchar_t *buffer, wchar_t *stuff) |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 272 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 273 | size_t n, k; |
| 274 | if (stuff[0] == SEP) |
| 275 | n = 0; |
| 276 | else { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 277 | n = wcslen(buffer); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 278 | if (n > 0 && buffer[n-1] != SEP && n < MAXPATHLEN) |
| 279 | buffer[n++] = SEP; |
| 280 | } |
Tim Peters | ec8c5a9 | 2004-08-08 01:00:47 +0000 | [diff] [blame] | 281 | if (n > MAXPATHLEN) |
| 282 | Py_FatalError("buffer overflow in getpath.c's joinpath()"); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 283 | k = wcslen(stuff); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 284 | if (n + k > MAXPATHLEN) |
| 285 | k = MAXPATHLEN - n; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 286 | wcsncpy(buffer+n, stuff, k); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 287 | buffer[n+k] = '\0'; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 288 | } |
| 289 | |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 290 | /* copy_absolute requires that path be allocated at least |
| 291 | MAXPATHLEN + 1 bytes and that p be no more than MAXPATHLEN bytes. */ |
Jeremy Hylton | 7198ba9 | 2000-09-25 17:00:24 +0000 | [diff] [blame] | 292 | static void |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 293 | copy_absolute(wchar_t *path, wchar_t *p) |
Jeremy Hylton | 7198ba9 | 2000-09-25 17:00:24 +0000 | [diff] [blame] | 294 | { |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 295 | if (p[0] == SEP) |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 296 | wcscpy(path, p); |
Jeremy Hylton | 7198ba9 | 2000-09-25 17:00:24 +0000 | [diff] [blame] | 297 | else { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 298 | _wgetcwd(path, MAXPATHLEN); |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 299 | if (p[0] == '.' && p[1] == SEP) |
| 300 | p += 2; |
| 301 | joinpath(path, p); |
Jeremy Hylton | 7198ba9 | 2000-09-25 17:00:24 +0000 | [diff] [blame] | 302 | } |
| 303 | } |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 304 | |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 305 | /* absolutize() requires that path be allocated at least MAXPATHLEN+1 bytes. */ |
| 306 | static void |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 307 | absolutize(wchar_t *path) |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 308 | { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 309 | wchar_t buffer[MAXPATHLEN + 1]; |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 310 | |
| 311 | if (path[0] == SEP) |
| 312 | return; |
| 313 | copy_absolute(buffer, path); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 314 | wcscpy(path, buffer); |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 315 | } |
| 316 | |
| 317 | /* search_for_prefix requires that argv0_path be no more than MAXPATHLEN |
Jeremy Hylton | 6372fe1 | 2000-09-27 20:51:17 +0000 | [diff] [blame] | 318 | bytes long. |
| 319 | */ |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 320 | static int |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 321 | search_for_prefix(wchar_t *argv0_path, wchar_t *home) |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 322 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 323 | size_t n; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 324 | wchar_t *vpath; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 325 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 326 | /* If PYTHONHOME is set, we believe it unconditionally */ |
| 327 | if (home) { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 328 | wchar_t *delim; |
| 329 | wcsncpy(prefix, home, MAXPATHLEN); |
| 330 | delim = wcschr(prefix, DELIM); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 331 | if (delim) |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 332 | *delim = L'\0'; |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 333 | joinpath(prefix, lib_python); |
| 334 | joinpath(prefix, LANDMARK); |
| 335 | return 1; |
| 336 | } |
Jeremy Hylton | 847a996 | 2000-05-26 21:49:07 +0000 | [diff] [blame] | 337 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 338 | /* Check to see if argv[0] is in the build directory */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 339 | wcscpy(prefix, argv0_path); |
| 340 | joinpath(prefix, L"Modules/Setup"); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 341 | if (isfile(prefix)) { |
Neil Schemenauer | 6cf0702 | 2001-01-24 17:13:11 +0000 | [diff] [blame] | 342 | /* 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] | 343 | vpath = L"" VPATH; |
| 344 | wcscpy(prefix, argv0_path); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 345 | joinpath(prefix, vpath); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 346 | joinpath(prefix, L"Lib"); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 347 | joinpath(prefix, LANDMARK); |
| 348 | if (ismodule(prefix)) |
| 349 | return -1; |
| 350 | } |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 351 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 352 | /* Search from argv0_path, until root is found */ |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 353 | copy_absolute(prefix, argv0_path); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 354 | do { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 355 | n = wcslen(prefix); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 356 | joinpath(prefix, lib_python); |
| 357 | joinpath(prefix, LANDMARK); |
| 358 | if (ismodule(prefix)) |
| 359 | return 1; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 360 | prefix[n] = L'\0'; |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 361 | reduce(prefix); |
| 362 | } while (prefix[0]); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 363 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 364 | /* Look at configure's PREFIX */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 365 | wcsncpy(prefix, L"" PREFIX, MAXPATHLEN); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 366 | joinpath(prefix, lib_python); |
| 367 | joinpath(prefix, LANDMARK); |
| 368 | if (ismodule(prefix)) |
| 369 | return 1; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 370 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 371 | /* Fail */ |
| 372 | return 0; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 373 | } |
| 374 | |
| 375 | |
Jeremy Hylton | 6372fe1 | 2000-09-27 20:51:17 +0000 | [diff] [blame] | 376 | /* 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] | 377 | MAXPATHLEN bytes long. |
Jeremy Hylton | 6372fe1 | 2000-09-27 20:51:17 +0000 | [diff] [blame] | 378 | */ |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 379 | static int |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 380 | search_for_exec_prefix(wchar_t *argv0_path, wchar_t *home) |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 381 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 382 | size_t n; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 383 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 384 | /* If PYTHONHOME is set, we believe it unconditionally */ |
| 385 | if (home) { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 386 | wchar_t *delim; |
| 387 | delim = wcschr(home, DELIM); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 388 | if (delim) |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 389 | wcsncpy(exec_prefix, delim+1, MAXPATHLEN); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 390 | else |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 391 | wcsncpy(exec_prefix, home, MAXPATHLEN); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 392 | joinpath(exec_prefix, lib_python); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 393 | joinpath(exec_prefix, L"lib-dynload"); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 394 | return 1; |
| 395 | } |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 396 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 397 | /* Check to see if argv[0] is in the build directory */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 398 | wcscpy(exec_prefix, argv0_path); |
| 399 | joinpath(exec_prefix, L"Modules/Setup"); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 400 | if (isfile(exec_prefix)) { |
| 401 | reduce(exec_prefix); |
| 402 | return -1; |
| 403 | } |
Jeremy Hylton | 847a996 | 2000-05-26 21:49:07 +0000 | [diff] [blame] | 404 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 405 | /* Search from argv0_path, until root is found */ |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 406 | copy_absolute(exec_prefix, argv0_path); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 407 | do { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 408 | n = wcslen(exec_prefix); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 409 | joinpath(exec_prefix, lib_python); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 410 | joinpath(exec_prefix, L"lib-dynload"); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 411 | if (isdir(exec_prefix)) |
| 412 | return 1; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 413 | exec_prefix[n] = L'\0'; |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 414 | reduce(exec_prefix); |
| 415 | } while (exec_prefix[0]); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 416 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 417 | /* Look at configure's EXEC_PREFIX */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 418 | wcsncpy(exec_prefix, L"" EXEC_PREFIX, MAXPATHLEN); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 419 | joinpath(exec_prefix, lib_python); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 420 | joinpath(exec_prefix, L"lib-dynload"); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 421 | if (isdir(exec_prefix)) |
| 422 | return 1; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 423 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 424 | /* Fail */ |
| 425 | return 0; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 426 | } |
| 427 | |
| 428 | |
| 429 | static void |
Thomas Wouters | f3f33dc | 2000-07-21 06:00:07 +0000 | [diff] [blame] | 430 | calculate_path(void) |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 431 | { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 432 | extern wchar_t *Py_GetProgramName(void); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 433 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 434 | static wchar_t delimiter[2] = {DELIM, '\0'}; |
| 435 | static wchar_t separator[2] = {SEP, '\0'}; |
| 436 | wchar_t *pythonpath = L"" PYTHONPATH; |
| 437 | char *_rtpypath = Py_GETENV("PYTHONPATH"); /* XXX use wide version on Windows */ |
| 438 | wchar_t rtpypath[MAXPATHLEN+1]; |
| 439 | wchar_t *home = Py_GetPythonHome(); |
| 440 | char *_path = getenv("PATH"); |
| 441 | wchar_t wpath[MAXPATHLEN+1]; |
| 442 | wchar_t *path = NULL; |
| 443 | wchar_t *prog = Py_GetProgramName(); |
| 444 | wchar_t argv0_path[MAXPATHLEN+1]; |
| 445 | wchar_t zip_path[MAXPATHLEN+1]; |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 446 | int pfound, efound; /* 1 if found; -1 if found build directory */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 447 | wchar_t *buf; |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 448 | size_t bufsz; |
| 449 | size_t prefixsz; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 450 | wchar_t *defpath = pythonpath; |
Guido van Rossum | 54ecc3d | 1999-01-27 17:53:11 +0000 | [diff] [blame] | 451 | #ifdef WITH_NEXT_FRAMEWORK |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 452 | NSModule pythonModule; |
Guido van Rossum | 54ecc3d | 1999-01-27 17:53:11 +0000 | [diff] [blame] | 453 | #endif |
Jack Jansen | 1afd480 | 2004-06-03 14:33:03 +0000 | [diff] [blame] | 454 | #ifdef __APPLE__ |
Skip Montanaro | 2b47445 | 2006-01-05 10:49:13 +0000 | [diff] [blame] | 455 | #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] | 456 | uint32_t nsexeclength = MAXPATHLEN; |
Skip Montanaro | 2b47445 | 2006-01-05 10:49:13 +0000 | [diff] [blame] | 457 | #else |
| 458 | unsigned long nsexeclength = MAXPATHLEN; |
| 459 | #endif |
Jack Jansen | 1afd480 | 2004-06-03 14:33:03 +0000 | [diff] [blame] | 460 | #endif |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 461 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 462 | if (_path) { |
| 463 | size_t r = mbstowcs(wpath, _path, MAXPATHLEN+1); |
| 464 | path = wpath; |
| 465 | if (r == (size_t)-1 || r > MAXPATHLEN) { |
| 466 | /* Could not convert PATH, or it's too long. */ |
| 467 | path = NULL; |
| 468 | } |
| 469 | } |
| 470 | |
Jack Jansen | 55070f5 | 2001-12-02 23:56:28 +0000 | [diff] [blame] | 471 | /* If there is no slash in the argv0 path, then we have to |
| 472 | * assume python is on the user's $PATH, since there's no |
| 473 | * other way to find a directory to start the search from. If |
| 474 | * $PATH isn't exported, you lose. |
| 475 | */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 476 | if (wcschr(prog, SEP)) |
| 477 | wcsncpy(progpath, prog, MAXPATHLEN); |
Jack Jansen | 1afd480 | 2004-06-03 14:33:03 +0000 | [diff] [blame] | 478 | #ifdef __APPLE__ |
| 479 | /* On Mac OS X, if a script uses an interpreter of the form |
| 480 | * "#!/opt/python2.3/bin/python", the kernel only passes "python" |
| 481 | * as argv[0], which falls through to the $PATH search below. |
| 482 | * If /opt/python2.3/bin isn't in your path, or is near the end, |
| 483 | * this algorithm may incorrectly find /usr/bin/python. To work |
| 484 | * around this, we can use _NSGetExecutablePath to get a better |
| 485 | * hint of what the intended interpreter was, although this |
| 486 | * will fail if a relative path was used. but in that case, |
| 487 | * absolutize() should help us out below |
| 488 | */ |
| 489 | else if(0 == _NSGetExecutablePath(progpath, &nsexeclength) && progpath[0] == SEP) |
| 490 | ; |
Brett Cannon | 6cc4814 | 2004-06-24 00:48:44 +0000 | [diff] [blame] | 491 | #endif /* __APPLE__ */ |
Jack Jansen | 55070f5 | 2001-12-02 23:56:28 +0000 | [diff] [blame] | 492 | else if (path) { |
| 493 | while (1) { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 494 | wchar_t *delim = wcschr(path, DELIM); |
Jack Jansen | 55070f5 | 2001-12-02 23:56:28 +0000 | [diff] [blame] | 495 | |
| 496 | if (delim) { |
| 497 | size_t len = delim - path; |
| 498 | if (len > MAXPATHLEN) |
| 499 | len = MAXPATHLEN; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 500 | wcsncpy(progpath, path, len); |
Jack Jansen | 55070f5 | 2001-12-02 23:56:28 +0000 | [diff] [blame] | 501 | *(progpath + len) = '\0'; |
| 502 | } |
| 503 | else |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 504 | wcsncpy(progpath, path, MAXPATHLEN); |
Jack Jansen | 55070f5 | 2001-12-02 23:56:28 +0000 | [diff] [blame] | 505 | |
| 506 | joinpath(progpath, prog); |
| 507 | if (isxfile(progpath)) |
| 508 | break; |
| 509 | |
| 510 | if (!delim) { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 511 | progpath[0] = L'\0'; |
Jack Jansen | 55070f5 | 2001-12-02 23:56:28 +0000 | [diff] [blame] | 512 | break; |
| 513 | } |
| 514 | path = delim + 1; |
| 515 | } |
| 516 | } |
| 517 | else |
| 518 | progpath[0] = '\0'; |
| 519 | if (progpath[0] != SEP) |
| 520 | absolutize(progpath); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 521 | wcsncpy(argv0_path, progpath, MAXPATHLEN); |
Neal Norwitz | bcf9f9e | 2002-09-13 14:35:56 +0000 | [diff] [blame] | 522 | argv0_path[MAXPATHLEN] = '\0'; |
Jack Jansen | 55070f5 | 2001-12-02 23:56:28 +0000 | [diff] [blame] | 523 | |
Guido van Rossum | 54ecc3d | 1999-01-27 17:53:11 +0000 | [diff] [blame] | 524 | #ifdef WITH_NEXT_FRAMEWORK |
Jack Jansen | 55070f5 | 2001-12-02 23:56:28 +0000 | [diff] [blame] | 525 | /* On Mac OS X we have a special case if we're running from a framework. |
| 526 | ** This is because the python home should be set relative to the library, |
| 527 | ** which is in the framework, not relative to the executable, which may |
| 528 | ** be outside of the framework. Except when we're in the build directory... |
| 529 | */ |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 530 | pythonModule = NSModuleForSymbol(NSLookupAndBindSymbol("_Py_Initialize")); |
| 531 | /* 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] | 532 | buf = (wchar_t *)NSLibraryNameForModule(pythonModule); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 533 | if (buf != NULL) { |
| 534 | /* We're in a framework. */ |
Jack Jansen | e925faf | 2001-08-15 01:14:40 +0000 | [diff] [blame] | 535 | /* See if we might be in the build directory. The framework in the |
| 536 | ** build directory is incomplete, it only has the .dylib and a few |
| 537 | ** needed symlinks, it doesn't have the Lib directories and such. |
| 538 | ** If we're running with the framework from the build directory we must |
| 539 | ** be running the interpreter in the build directory, so we use the |
| 540 | ** build-directory-specific logic to find Lib and such. |
| 541 | */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 542 | wcsncpy(argv0_path, buf, MAXPATHLEN); |
Jack Jansen | e925faf | 2001-08-15 01:14:40 +0000 | [diff] [blame] | 543 | reduce(argv0_path); |
| 544 | joinpath(argv0_path, lib_python); |
| 545 | joinpath(argv0_path, LANDMARK); |
| 546 | if (!ismodule(argv0_path)) { |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 547 | /* We are in the build directory so use the name of the |
| 548 | executable - we know that the absolute path is passed */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 549 | wcsncpy(argv0_path, prog, MAXPATHLEN); |
Jack Jansen | e925faf | 2001-08-15 01:14:40 +0000 | [diff] [blame] | 550 | } |
| 551 | else { |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 552 | /* Use the location of the library as the progpath */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 553 | wcsncpy(argv0_path, buf, MAXPATHLEN); |
Jack Jansen | e925faf | 2001-08-15 01:14:40 +0000 | [diff] [blame] | 554 | } |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 555 | } |
Guido van Rossum | 54ecc3d | 1999-01-27 17:53:11 +0000 | [diff] [blame] | 556 | #endif |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 557 | |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 558 | #if HAVE_READLINK |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 559 | { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 560 | wchar_t tmpbuffer[MAXPATHLEN+1]; |
| 561 | int linklen = _Py_wreadlink(progpath, tmpbuffer, MAXPATHLEN); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 562 | while (linklen != -1) { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 563 | if (tmpbuffer[0] == SEP) |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 564 | /* tmpbuffer should never be longer than MAXPATHLEN, |
| 565 | but extra check does not hurt */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 566 | wcsncpy(argv0_path, tmpbuffer, MAXPATHLEN); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 567 | else { |
| 568 | /* Interpret relative to progpath */ |
| 569 | reduce(argv0_path); |
| 570 | joinpath(argv0_path, tmpbuffer); |
| 571 | } |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 572 | linklen = _Py_wreadlink(argv0_path, tmpbuffer, MAXPATHLEN); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 573 | } |
| 574 | } |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 575 | #endif /* HAVE_READLINK */ |
| 576 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 577 | reduce(argv0_path); |
Jeremy Hylton | 6372fe1 | 2000-09-27 20:51:17 +0000 | [diff] [blame] | 578 | /* At this point, argv0_path is guaranteed to be less than |
| 579 | MAXPATHLEN bytes long. |
| 580 | */ |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 581 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 582 | if (!(pfound = search_for_prefix(argv0_path, home))) { |
| 583 | if (!Py_FrozenFlag) |
| 584 | fprintf(stderr, |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 585 | "Could not find platform independent libraries <prefix>\n"); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 586 | wcsncpy(prefix, L"" PREFIX, MAXPATHLEN); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 587 | joinpath(prefix, lib_python); |
| 588 | } |
| 589 | else |
| 590 | reduce(prefix); |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 591 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 592 | wcsncpy(zip_path, prefix, MAXPATHLEN); |
| 593 | zip_path[MAXPATHLEN] = L'\0'; |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 594 | if (pfound > 0) { /* Use the reduced prefix returned by Py_GetPrefix() */ |
| 595 | reduce(zip_path); |
| 596 | reduce(zip_path); |
| 597 | } |
| 598 | else |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 599 | wcsncpy(zip_path, L"" PREFIX, MAXPATHLEN); |
| 600 | joinpath(zip_path, L"lib/python00.zip"); |
| 601 | bufsz = wcslen(zip_path); /* Replace "00" with version */ |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 602 | zip_path[bufsz - 6] = VERSION[0]; |
| 603 | zip_path[bufsz - 5] = VERSION[2]; |
| 604 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 605 | if (!(efound = search_for_exec_prefix(argv0_path, home))) { |
| 606 | if (!Py_FrozenFlag) |
| 607 | fprintf(stderr, |
Guido van Rossum | e296ced | 2001-09-28 20:00:29 +0000 | [diff] [blame] | 608 | "Could not find platform dependent libraries <exec_prefix>\n"); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 609 | wcsncpy(exec_prefix, L"" EXEC_PREFIX, MAXPATHLEN); |
| 610 | joinpath(exec_prefix, L"lib/lib-dynload"); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 611 | } |
| 612 | /* If we found EXEC_PREFIX do *not* reduce it! (Yet.) */ |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 613 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 614 | if ((!pfound || !efound) && !Py_FrozenFlag) |
| 615 | fprintf(stderr, |
| 616 | "Consider setting $PYTHONHOME to <prefix>[:<exec_prefix>]\n"); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 617 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 618 | /* Calculate size of return buffer. |
| 619 | */ |
| 620 | bufsz = 0; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 621 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 622 | if (_rtpypath) { |
| 623 | size_t s = mbstowcs(rtpypath, _rtpypath, sizeof(rtpypath)/sizeof(wchar_t)); |
| 624 | if (s == (size_t)-1 || s >=sizeof(rtpypath)) |
| 625 | /* XXX deal with errors more gracefully */ |
| 626 | _rtpypath = NULL; |
| 627 | if (_rtpypath) |
| 628 | bufsz += wcslen(rtpypath) + 1; |
| 629 | } |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 630 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 631 | prefixsz = wcslen(prefix) + 1; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 632 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 633 | while (1) { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 634 | wchar_t *delim = wcschr(defpath, DELIM); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 635 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 636 | if (defpath[0] != SEP) |
| 637 | /* Paths are relative to prefix */ |
| 638 | bufsz += prefixsz; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 639 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 640 | if (delim) |
| 641 | bufsz += delim - defpath + 1; |
| 642 | else { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 643 | bufsz += wcslen(defpath) + 1; |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 644 | break; |
| 645 | } |
| 646 | defpath = delim + 1; |
| 647 | } |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 648 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 649 | bufsz += wcslen(zip_path) + 1; |
| 650 | bufsz += wcslen(exec_prefix) + 1; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 651 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 652 | /* This is the only malloc call in this file */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 653 | buf = (wchar_t *)PyMem_Malloc(bufsz*sizeof(wchar_t)); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 654 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 655 | if (buf == NULL) { |
| 656 | /* We can't exit, so print a warning and limp along */ |
| 657 | fprintf(stderr, "Not enough memory for dynamic PYTHONPATH.\n"); |
| 658 | fprintf(stderr, "Using default static PYTHONPATH.\n"); |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 659 | module_search_path = L"" PYTHONPATH; |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 660 | } |
| 661 | else { |
| 662 | /* Run-time value of $PYTHONPATH goes first */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 663 | if (_rtpypath) { |
| 664 | wcscpy(buf, rtpypath); |
| 665 | wcscat(buf, delimiter); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 666 | } |
| 667 | else |
| 668 | buf[0] = '\0'; |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 669 | |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 670 | /* Next is the default zip path */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 671 | wcscat(buf, zip_path); |
| 672 | wcscat(buf, delimiter); |
Just van Rossum | 52e14d6 | 2002-12-30 22:08:05 +0000 | [diff] [blame] | 673 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 674 | /* Next goes merge of compile-time $PYTHONPATH with |
| 675 | * dynamically located prefix. |
| 676 | */ |
| 677 | defpath = pythonpath; |
| 678 | while (1) { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 679 | wchar_t *delim = wcschr(defpath, DELIM); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 680 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 681 | if (defpath[0] != SEP) { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 682 | wcscat(buf, prefix); |
| 683 | wcscat(buf, separator); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 684 | } |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 685 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 686 | if (delim) { |
| 687 | size_t len = delim - defpath + 1; |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 688 | size_t end = wcslen(buf) + len; |
| 689 | wcsncat(buf, defpath, len); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 690 | *(buf + end) = '\0'; |
| 691 | } |
| 692 | else { |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 693 | wcscat(buf, defpath); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 694 | break; |
| 695 | } |
| 696 | defpath = delim + 1; |
| 697 | } |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 698 | wcscat(buf, delimiter); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 699 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 700 | /* Finally, on goes the directory for dynamic-load modules */ |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 701 | wcscat(buf, exec_prefix); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 702 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 703 | /* And publish the results */ |
| 704 | module_search_path = buf; |
| 705 | } |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 706 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 707 | /* Reduce prefix and exec_prefix to their essence, |
| 708 | * e.g. /usr/local/lib/python1.5 is reduced to /usr/local. |
| 709 | * If we're loading relative to the build directory, |
| 710 | * return the compiled-in defaults instead. |
| 711 | */ |
| 712 | if (pfound > 0) { |
| 713 | reduce(prefix); |
| 714 | reduce(prefix); |
Georg Brandl | e393bf6 | 2006-02-20 17:37:36 +0000 | [diff] [blame] | 715 | /* The prefix is the root directory, but reduce() chopped |
| 716 | * off the "/". */ |
| 717 | if (!prefix[0]) |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 718 | wcscpy(prefix, separator); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 719 | } |
| 720 | else |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 721 | wcsncpy(prefix, L"" PREFIX, MAXPATHLEN); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 722 | |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 723 | if (efound > 0) { |
| 724 | reduce(exec_prefix); |
| 725 | reduce(exec_prefix); |
| 726 | reduce(exec_prefix); |
Georg Brandl | e393bf6 | 2006-02-20 17:37:36 +0000 | [diff] [blame] | 727 | if (!exec_prefix[0]) |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 728 | wcscpy(exec_prefix, separator); |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 729 | } |
| 730 | else |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 731 | wcsncpy(exec_prefix, L"" EXEC_PREFIX, MAXPATHLEN); |
Guido van Rossum | 305e5d0 | 1997-04-11 17:18:45 +0000 | [diff] [blame] | 732 | } |
| 733 | |
| 734 | |
| 735 | /* External interface */ |
Guido van Rossum | 667d704 | 1995-08-04 04:20:48 +0000 | [diff] [blame] | 736 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 737 | wchar_t * |
Thomas Wouters | f3f33dc | 2000-07-21 06:00:07 +0000 | [diff] [blame] | 738 | Py_GetPath(void) |
Guido van Rossum | 667d704 | 1995-08-04 04:20:48 +0000 | [diff] [blame] | 739 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 740 | if (!module_search_path) |
| 741 | calculate_path(); |
| 742 | return module_search_path; |
Guido van Rossum | 667d704 | 1995-08-04 04:20:48 +0000 | [diff] [blame] | 743 | } |
Guido van Rossum | c34c9a5 | 1996-06-12 04:20:27 +0000 | [diff] [blame] | 744 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 745 | wchar_t * |
Thomas Wouters | f3f33dc | 2000-07-21 06:00:07 +0000 | [diff] [blame] | 746 | Py_GetPrefix(void) |
Guido van Rossum | c34c9a5 | 1996-06-12 04:20:27 +0000 | [diff] [blame] | 747 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 748 | if (!module_search_path) |
| 749 | calculate_path(); |
| 750 | return prefix; |
Guido van Rossum | c34c9a5 | 1996-06-12 04:20:27 +0000 | [diff] [blame] | 751 | } |
| 752 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 753 | wchar_t * |
Thomas Wouters | f3f33dc | 2000-07-21 06:00:07 +0000 | [diff] [blame] | 754 | Py_GetExecPrefix(void) |
Guido van Rossum | c34c9a5 | 1996-06-12 04:20:27 +0000 | [diff] [blame] | 755 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 756 | if (!module_search_path) |
| 757 | calculate_path(); |
| 758 | return exec_prefix; |
Guido van Rossum | c34c9a5 | 1996-06-12 04:20:27 +0000 | [diff] [blame] | 759 | } |
Guido van Rossum | 7929c6f | 1997-05-20 22:38:21 +0000 | [diff] [blame] | 760 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 761 | wchar_t * |
Thomas Wouters | f3f33dc | 2000-07-21 06:00:07 +0000 | [diff] [blame] | 762 | Py_GetProgramFullPath(void) |
Guido van Rossum | 7929c6f | 1997-05-20 22:38:21 +0000 | [diff] [blame] | 763 | { |
Fred Drake | edabdc1 | 2000-07-08 06:16:37 +0000 | [diff] [blame] | 764 | if (!module_search_path) |
| 765 | calculate_path(); |
| 766 | return progpath; |
Guido van Rossum | 7929c6f | 1997-05-20 22:38:21 +0000 | [diff] [blame] | 767 | } |
Thomas Wouters | 49fd7fa | 2006-04-21 10:40:58 +0000 | [diff] [blame] | 768 | |
| 769 | |
| 770 | #ifdef __cplusplus |
| 771 | } |
| 772 | #endif |
| 773 | |