Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 1 | |
| 2 | /* Return the initial module search path. */ |
Guido van Rossum | c499572 | 1998-08-08 20:05:31 +0000 | [diff] [blame] | 3 | /* Used by DOS, OS/2, Windows 3.1, Windows 95/98, Windows NT. */ |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 4 | |
Guido van Rossum | 88716bb | 2000-03-30 19:45:39 +0000 | [diff] [blame] | 5 | /* ---------------------------------------------------------------- |
| 6 | PATH RULES FOR WINDOWS: |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 7 | This describes how sys.path is formed on Windows. It describes the |
| 8 | functionality, not the implementation (ie, the order in which these |
Guido van Rossum | 88716bb | 2000-03-30 19:45:39 +0000 | [diff] [blame] | 9 | are actually fetched is different) |
| 10 | |
| 11 | * Python always adds an empty entry at the start, which corresponds |
| 12 | to the current directory. |
| 13 | |
Georg Brandl | 7eb4b7d | 2005-07-22 21:49:32 +0000 | [diff] [blame] | 14 | * If the PYTHONPATH env. var. exists, its entries are added next. |
Guido van Rossum | 88716bb | 2000-03-30 19:45:39 +0000 | [diff] [blame] | 15 | |
| 16 | * We look in the registry for "application paths" - that is, sub-keys |
| 17 | under the main PythonPath registry key. These are added next (the |
| 18 | order of sub-key processing is undefined). |
| 19 | HKEY_CURRENT_USER is searched and added first. |
| 20 | HKEY_LOCAL_MACHINE is searched and added next. |
| 21 | (Note that all known installers only use HKLM, so HKCU is typically |
| 22 | empty) |
| 23 | |
| 24 | * We attempt to locate the "Python Home" - if the PYTHONHOME env var |
| 25 | is set, we believe it. Otherwise, we use the path of our host .EXE's |
Jeremy Hylton | 847a996 | 2000-05-26 21:49:07 +0000 | [diff] [blame] | 26 | to try and locate our "landmark" (lib\\os.py) and deduce our home. |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 27 | - If we DO have a Python Home: The relevant sub-directories (Lib, |
Georg Brandl | 6e47a33 | 2008-05-17 19:15:58 +0000 | [diff] [blame] | 28 | plat-win, etc) are based on the Python Home |
Guido van Rossum | 88716bb | 2000-03-30 19:45:39 +0000 | [diff] [blame] | 29 | - If we DO NOT have a Python Home, the core Python Path is |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 30 | loaded from the registry. This is the main PythonPath key, |
Guido van Rossum | 88716bb | 2000-03-30 19:45:39 +0000 | [diff] [blame] | 31 | and both HKLM and HKCU are combined to form the path) |
| 32 | |
| 33 | * Iff - we can not locate the Python Home, have not had a PYTHONPATH |
| 34 | specified, and can't locate any Registry entries (ie, we have _nothing_ |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 35 | we can assume is a good path), a default path with relative entries is |
Guido van Rossum | 88716bb | 2000-03-30 19:45:39 +0000 | [diff] [blame] | 36 | used (eg. .\Lib;.\plat-win, etc) |
| 37 | |
| 38 | |
| 39 | The end result of all this is: |
| 40 | * When running python.exe, or any other .exe in the main Python directory |
| 41 | (either an installed version, or directly from the PCbuild directory), |
| 42 | the core path is deduced, and the core paths in the registry are |
| 43 | ignored. Other "application paths" in the registry are always read. |
| 44 | |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 45 | * When Python is hosted in another exe (different directory, embedded via |
Guido van Rossum | 88716bb | 2000-03-30 19:45:39 +0000 | [diff] [blame] | 46 | COM, etc), the Python Home will not be deduced, so the core path from |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 47 | the registry is used. Other "application paths" in the registry are |
Guido van Rossum | 88716bb | 2000-03-30 19:45:39 +0000 | [diff] [blame] | 48 | always read. |
| 49 | |
| 50 | * If Python can't find its home and there is no registry (eg, frozen |
| 51 | exe, some very strange installation setup) you get a path with |
| 52 | some default, but relative, paths. |
| 53 | |
| 54 | ---------------------------------------------------------------- */ |
| 55 | |
| 56 | |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 57 | #include "Python.h" |
| 58 | #include "osdefs.h" |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 59 | #include <wchar.h> |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 60 | |
Martin v. Löwis | 6238d2b | 2002-06-30 15:26:10 +0000 | [diff] [blame] | 61 | #ifdef MS_WINDOWS |
Guido van Rossum | 8f1b651 | 1997-08-13 19:55:43 +0000 | [diff] [blame] | 62 | #include <windows.h> |
| 63 | #endif |
| 64 | |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 65 | #ifdef HAVE_SYS_TYPES_H |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 66 | #include <sys/types.h> |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 67 | #endif /* HAVE_SYS_TYPES_H */ |
| 68 | |
| 69 | #ifdef HAVE_SYS_STAT_H |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 70 | #include <sys/stat.h> |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 71 | #endif /* HAVE_SYS_STAT_H */ |
| 72 | |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 73 | #include <string.h> |
| 74 | |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 75 | /* Search in some common locations for the associated Python libraries. |
| 76 | * |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 77 | * Py_GetPath() tries to return a sensible Python module search path. |
| 78 | * |
Guido van Rossum | 42a9744 | 1998-02-19 21:00:45 +0000 | [diff] [blame] | 79 | * The approach is an adaptation for Windows of the strategy used in |
| 80 | * ../Modules/getpath.c; it uses the Windows Registry as one of its |
| 81 | * information sources. |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 82 | */ |
| 83 | |
| 84 | #ifndef LANDMARK |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 85 | #define LANDMARK L"lib\\os.py" |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 86 | #endif |
| 87 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 88 | static wchar_t prefix[MAXPATHLEN+1]; |
| 89 | static wchar_t progpath[MAXPATHLEN+1]; |
| 90 | static wchar_t dllpath[MAXPATHLEN+1]; |
| 91 | static wchar_t *module_search_path = NULL; |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 92 | |
Guido van Rossum | eea1449 | 1997-08-13 21:30:44 +0000 | [diff] [blame] | 93 | |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 94 | static int |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 95 | is_sep(wchar_t ch) /* determine if "ch" is a separator character */ |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 96 | { |
| 97 | #ifdef ALTSEP |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 98 | return ch == SEP || ch == ALTSEP; |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 99 | #else |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 100 | return ch == SEP; |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 101 | #endif |
| 102 | } |
| 103 | |
Mark Hammond | 8bf9e3b | 2000-10-07 11:10:50 +0000 | [diff] [blame] | 104 | /* assumes 'dir' null terminated in bounds. Never writes |
| 105 | beyond existing terminator. |
| 106 | */ |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 107 | static void |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 108 | reduce(wchar_t *dir) |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 109 | { |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 110 | size_t i = wcslen(dir); |
| 111 | while (i > 0 && !is_sep(dir[i])) |
| 112 | --i; |
| 113 | dir[i] = '\0'; |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 114 | } |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 115 | |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 116 | |
| 117 | static int |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 118 | exists(wchar_t *filename) |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 119 | { |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 120 | return GetFileAttributesW(filename) != 0xFFFFFFFF; |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 121 | } |
| 122 | |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 123 | /* Assumes 'filename' MAXPATHLEN+1 bytes long - |
Mark Hammond | 8bf9e3b | 2000-10-07 11:10:50 +0000 | [diff] [blame] | 124 | may extend 'filename' by one character. |
| 125 | */ |
Guido van Rossum | 43ff114 | 1998-08-08 23:40:40 +0000 | [diff] [blame] | 126 | static int |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 127 | ismodule(wchar_t *filename) /* Is module -- check for .pyc/.pyo too */ |
Guido van Rossum | 43ff114 | 1998-08-08 23:40:40 +0000 | [diff] [blame] | 128 | { |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 129 | if (exists(filename)) |
| 130 | return 1; |
Guido van Rossum | 43ff114 | 1998-08-08 23:40:40 +0000 | [diff] [blame] | 131 | |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 132 | /* Check for the compiled version of prefix. */ |
| 133 | if (wcslen(filename) < MAXPATHLEN) { |
| 134 | wcscat(filename, Py_OptimizeFlag ? L"o" : L"c"); |
| 135 | if (exists(filename)) |
| 136 | return 1; |
| 137 | } |
| 138 | return 0; |
Guido van Rossum | 43ff114 | 1998-08-08 23:40:40 +0000 | [diff] [blame] | 139 | } |
| 140 | |
Tim Peters | 8484fbf | 2004-08-07 19:12:27 +0000 | [diff] [blame] | 141 | /* Add a path component, by appending stuff to buffer. |
| 142 | buffer must have at least MAXPATHLEN + 1 bytes allocated, and contain a |
| 143 | NUL-terminated string with no more than MAXPATHLEN characters (not counting |
| 144 | the trailing NUL). It's a fatal error if it contains a string longer than |
| 145 | that (callers must be careful!). If these requirements are met, it's |
| 146 | guaranteed that buffer will still be a NUL-terminated string with no more |
| 147 | than MAXPATHLEN characters at exit. If stuff is too long, only as much of |
| 148 | stuff as fits will be appended. |
| 149 | */ |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 150 | static void |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 151 | join(wchar_t *buffer, wchar_t *stuff) |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 152 | { |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 153 | size_t n, k; |
| 154 | if (is_sep(stuff[0])) |
| 155 | n = 0; |
| 156 | else { |
| 157 | n = wcslen(buffer); |
| 158 | if (n > 0 && !is_sep(buffer[n-1]) && n < MAXPATHLEN) |
| 159 | buffer[n++] = SEP; |
| 160 | } |
| 161 | if (n > MAXPATHLEN) |
| 162 | Py_FatalError("buffer overflow in getpathp.c's joinpath()"); |
| 163 | k = wcslen(stuff); |
| 164 | if (n + k > MAXPATHLEN) |
| 165 | k = MAXPATHLEN - n; |
| 166 | wcsncpy(buffer+n, stuff, k); |
| 167 | buffer[n+k] = '\0'; |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 168 | } |
| 169 | |
Mark Hammond | 8bf9e3b | 2000-10-07 11:10:50 +0000 | [diff] [blame] | 170 | /* gotlandmark only called by search_for_prefix, which ensures |
| 171 | 'prefix' is null terminated in bounds. join() ensures |
| 172 | 'landmark' can not overflow prefix if too long. |
| 173 | */ |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 174 | static int |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 175 | gotlandmark(wchar_t *landmark) |
Guido van Rossum | e02e48b | 2000-03-29 01:49:47 +0000 | [diff] [blame] | 176 | { |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 177 | int ok; |
| 178 | Py_ssize_t n; |
Guido van Rossum | e02e48b | 2000-03-29 01:49:47 +0000 | [diff] [blame] | 179 | |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 180 | n = wcslen(prefix); |
| 181 | join(prefix, landmark); |
| 182 | ok = ismodule(prefix); |
| 183 | prefix[n] = '\0'; |
| 184 | return ok; |
Guido van Rossum | e02e48b | 2000-03-29 01:49:47 +0000 | [diff] [blame] | 185 | } |
| 186 | |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 187 | /* assumes argv0_path is MAXPATHLEN+1 bytes long, already \0 term'd. |
Mark Hammond | 8bf9e3b | 2000-10-07 11:10:50 +0000 | [diff] [blame] | 188 | assumption provided by only caller, calculate_path() */ |
Guido van Rossum | e02e48b | 2000-03-29 01:49:47 +0000 | [diff] [blame] | 189 | static int |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 190 | search_for_prefix(wchar_t *argv0_path, wchar_t *landmark) |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 191 | { |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 192 | /* Search from argv0_path, until landmark is found */ |
| 193 | wcscpy(prefix, argv0_path); |
| 194 | do { |
| 195 | if (gotlandmark(landmark)) |
| 196 | return 1; |
| 197 | reduce(prefix); |
| 198 | } while (prefix[0]); |
| 199 | return 0; |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 200 | } |
| 201 | |
Martin v. Löwis | 6238d2b | 2002-06-30 15:26:10 +0000 | [diff] [blame] | 202 | #ifdef MS_WINDOWS |
Martin v. Löwis | bc186a8 | 2009-02-02 15:32:22 +0000 | [diff] [blame] | 203 | #ifdef Py_ENABLE_SHARED |
Guido van Rossum | 43ff114 | 1998-08-08 23:40:40 +0000 | [diff] [blame] | 204 | |
Guido van Rossum | 88716bb | 2000-03-30 19:45:39 +0000 | [diff] [blame] | 205 | /* a string loaded from the DLL at startup.*/ |
| 206 | extern const char *PyWin_DLLVersionString; |
Guido van Rossum | 271f977 | 1997-09-29 23:39:31 +0000 | [diff] [blame] | 207 | |
Guido van Rossum | eea1449 | 1997-08-13 21:30:44 +0000 | [diff] [blame] | 208 | |
| 209 | /* Load a PYTHONPATH value from the registry. |
| 210 | Load from either HKEY_LOCAL_MACHINE or HKEY_CURRENT_USER. |
| 211 | |
Guido van Rossum | 88716bb | 2000-03-30 19:45:39 +0000 | [diff] [blame] | 212 | Works in both Unicode and 8bit environments. Only uses the |
| 213 | Ex family of functions so it also works with Windows CE. |
| 214 | |
Guido van Rossum | eea1449 | 1997-08-13 21:30:44 +0000 | [diff] [blame] | 215 | Returns NULL, or a pointer that should be freed. |
Mark Hammond | 5edc627 | 2001-02-23 11:38:38 +0000 | [diff] [blame] | 216 | |
| 217 | XXX - this code is pretty strange, as it used to also |
| 218 | work on Win16, where the buffer sizes werent available |
| 219 | in advance. It could be simplied now Win16/Win32s is dead! |
Guido van Rossum | eea1449 | 1997-08-13 21:30:44 +0000 | [diff] [blame] | 220 | */ |
| 221 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 222 | static wchar_t * |
Guido van Rossum | 88716bb | 2000-03-30 19:45:39 +0000 | [diff] [blame] | 223 | getpythonregpath(HKEY keyBase, int skipcore) |
Guido van Rossum | eea1449 | 1997-08-13 21:30:44 +0000 | [diff] [blame] | 224 | { |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 225 | HKEY newKey = 0; |
| 226 | DWORD dataSize = 0; |
| 227 | DWORD numKeys = 0; |
| 228 | LONG rc; |
| 229 | wchar_t *retval = NULL; |
| 230 | WCHAR *dataBuf = NULL; |
| 231 | static const WCHAR keyPrefix[] = L"Software\\Python\\PythonCore\\"; |
| 232 | static const WCHAR keySuffix[] = L"\\PythonPath"; |
| 233 | size_t versionLen; |
| 234 | DWORD index; |
| 235 | WCHAR *keyBuf = NULL; |
| 236 | WCHAR *keyBufPtr; |
| 237 | WCHAR **ppPaths = NULL; |
Guido van Rossum | 271f977 | 1997-09-29 23:39:31 +0000 | [diff] [blame] | 238 | |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 239 | /* Tried to use sysget("winver") but here is too early :-( */ |
| 240 | versionLen = strlen(PyWin_DLLVersionString); |
| 241 | /* Space for all the chars, plus one \0 */ |
| 242 | keyBuf = keyBufPtr = malloc(sizeof(keyPrefix) + |
| 243 | sizeof(WCHAR)*(versionLen-1) + |
| 244 | sizeof(keySuffix)); |
| 245 | if (keyBuf==NULL) goto done; |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 246 | |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 247 | memcpy(keyBufPtr, keyPrefix, sizeof(keyPrefix)-sizeof(WCHAR)); |
| 248 | keyBufPtr += sizeof(keyPrefix)/sizeof(WCHAR) - 1; |
| 249 | mbstowcs(keyBufPtr, PyWin_DLLVersionString, versionLen); |
| 250 | keyBufPtr += versionLen; |
| 251 | /* NULL comes with this one! */ |
| 252 | memcpy(keyBufPtr, keySuffix, sizeof(keySuffix)); |
| 253 | /* Open the root Python key */ |
| 254 | rc=RegOpenKeyExW(keyBase, |
| 255 | keyBuf, /* subkey */ |
| 256 | 0, /* reserved */ |
| 257 | KEY_READ, |
| 258 | &newKey); |
| 259 | if (rc!=ERROR_SUCCESS) goto done; |
| 260 | /* Find out how big our core buffer is, and how many subkeys we have */ |
| 261 | rc = RegQueryInfoKey(newKey, NULL, NULL, NULL, &numKeys, NULL, NULL, |
| 262 | NULL, NULL, &dataSize, NULL, NULL); |
| 263 | if (rc!=ERROR_SUCCESS) goto done; |
| 264 | if (skipcore) dataSize = 0; /* Only count core ones if we want them! */ |
| 265 | /* Allocate a temp array of char buffers, so we only need to loop |
| 266 | reading the registry once |
| 267 | */ |
| 268 | ppPaths = malloc( sizeof(WCHAR *) * numKeys ); |
| 269 | if (ppPaths==NULL) goto done; |
| 270 | memset(ppPaths, 0, sizeof(WCHAR *) * numKeys); |
| 271 | /* Loop over all subkeys, allocating a temp sub-buffer. */ |
| 272 | for(index=0;index<numKeys;index++) { |
| 273 | WCHAR keyBuf[MAX_PATH+1]; |
| 274 | HKEY subKey = 0; |
| 275 | DWORD reqdSize = MAX_PATH+1; |
| 276 | /* Get the sub-key name */ |
| 277 | DWORD rc = RegEnumKeyExW(newKey, index, keyBuf, &reqdSize, |
| 278 | NULL, NULL, NULL, NULL ); |
| 279 | if (rc!=ERROR_SUCCESS) goto done; |
| 280 | /* Open the sub-key */ |
| 281 | rc=RegOpenKeyExW(newKey, |
| 282 | keyBuf, /* subkey */ |
| 283 | 0, /* reserved */ |
| 284 | KEY_READ, |
| 285 | &subKey); |
| 286 | if (rc!=ERROR_SUCCESS) goto done; |
| 287 | /* Find the value of the buffer size, malloc, then read it */ |
| 288 | RegQueryValueExW(subKey, NULL, 0, NULL, NULL, &reqdSize); |
| 289 | if (reqdSize) { |
| 290 | ppPaths[index] = malloc(reqdSize); |
| 291 | if (ppPaths[index]) { |
| 292 | RegQueryValueExW(subKey, NULL, 0, NULL, |
| 293 | (LPBYTE)ppPaths[index], |
| 294 | &reqdSize); |
| 295 | dataSize += reqdSize + 1; /* 1 for the ";" */ |
| 296 | } |
| 297 | } |
| 298 | RegCloseKey(subKey); |
| 299 | } |
Thomas Wouters | 0e3f591 | 2006-08-11 14:57:12 +0000 | [diff] [blame] | 300 | |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 301 | /* return null if no path to return */ |
| 302 | if (dataSize == 0) goto done; |
| 303 | |
| 304 | /* original datasize from RegQueryInfo doesn't include the \0 */ |
| 305 | dataBuf = malloc((dataSize+1) * sizeof(WCHAR)); |
| 306 | if (dataBuf) { |
| 307 | WCHAR *szCur = dataBuf; |
| 308 | DWORD reqdSize = dataSize; |
| 309 | /* Copy our collected strings */ |
| 310 | for (index=0;index<numKeys;index++) { |
| 311 | if (index > 0) { |
| 312 | *(szCur++) = L';'; |
| 313 | dataSize--; |
| 314 | } |
| 315 | if (ppPaths[index]) { |
| 316 | Py_ssize_t len = wcslen(ppPaths[index]); |
| 317 | wcsncpy(szCur, ppPaths[index], len); |
| 318 | szCur += len; |
| 319 | assert(dataSize > (DWORD)len); |
| 320 | dataSize -= (DWORD)len; |
| 321 | } |
| 322 | } |
| 323 | if (skipcore) |
| 324 | *szCur = '\0'; |
| 325 | else { |
| 326 | /* If we have no values, we dont need a ';' */ |
| 327 | if (numKeys) { |
| 328 | *(szCur++) = L';'; |
| 329 | dataSize--; |
| 330 | } |
| 331 | /* Now append the core path entries - |
| 332 | this will include the NULL |
| 333 | */ |
| 334 | rc = RegQueryValueExW(newKey, NULL, 0, NULL, |
| 335 | (LPBYTE)szCur, &dataSize); |
| 336 | } |
| 337 | /* And set the result - caller must free */ |
| 338 | retval = dataBuf; |
| 339 | } |
Guido van Rossum | 88716bb | 2000-03-30 19:45:39 +0000 | [diff] [blame] | 340 | done: |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 341 | /* Loop freeing my temp buffers */ |
| 342 | if (ppPaths) { |
| 343 | for(index=0;index<numKeys;index++) |
| 344 | if (ppPaths[index]) free(ppPaths[index]); |
| 345 | free(ppPaths); |
| 346 | } |
| 347 | if (newKey) |
| 348 | RegCloseKey(newKey); |
| 349 | if (keyBuf) |
| 350 | free(keyBuf); |
| 351 | return retval; |
Guido van Rossum | eea1449 | 1997-08-13 21:30:44 +0000 | [diff] [blame] | 352 | } |
Martin v. Löwis | bc186a8 | 2009-02-02 15:32:22 +0000 | [diff] [blame] | 353 | #endif /* Py_ENABLE_SHARED */ |
Martin v. Löwis | 6238d2b | 2002-06-30 15:26:10 +0000 | [diff] [blame] | 354 | #endif /* MS_WINDOWS */ |
Guido van Rossum | eea1449 | 1997-08-13 21:30:44 +0000 | [diff] [blame] | 355 | |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 356 | static void |
Thomas Wouters | 7889010 | 2000-07-22 19:25:51 +0000 | [diff] [blame] | 357 | get_progpath(void) |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 358 | { |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 359 | extern wchar_t *Py_GetProgramName(void); |
| 360 | wchar_t *path = _wgetenv(L"PATH"); |
| 361 | wchar_t *prog = Py_GetProgramName(); |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 362 | |
Martin v. Löwis | 6238d2b | 2002-06-30 15:26:10 +0000 | [diff] [blame] | 363 | #ifdef MS_WINDOWS |
Martin v. Löwis | bc186a8 | 2009-02-02 15:32:22 +0000 | [diff] [blame] | 364 | #ifdef Py_ENABLE_SHARED |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 365 | extern HANDLE PyWin_DLLhModule; |
| 366 | /* static init of progpath ensures final char remains \0 */ |
| 367 | if (PyWin_DLLhModule) |
| 368 | if (!GetModuleFileNameW(PyWin_DLLhModule, dllpath, MAXPATHLEN)) |
| 369 | dllpath[0] = 0; |
Martin v. Löwis | bc186a8 | 2009-02-02 15:32:22 +0000 | [diff] [blame] | 370 | #else |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 371 | dllpath[0] = 0; |
Martin v. Löwis | bc186a8 | 2009-02-02 15:32:22 +0000 | [diff] [blame] | 372 | #endif |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 373 | if (GetModuleFileNameW(NULL, progpath, MAXPATHLEN)) |
| 374 | return; |
Guido van Rossum | eea1449 | 1997-08-13 21:30:44 +0000 | [diff] [blame] | 375 | #endif |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 376 | if (prog == NULL || *prog == '\0') |
| 377 | prog = L"python"; |
Guido van Rossum | eea1449 | 1997-08-13 21:30:44 +0000 | [diff] [blame] | 378 | |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 379 | /* If there is no slash in the argv0 path, then we have to |
| 380 | * assume python is on the user's $PATH, since there's no |
| 381 | * other way to find a directory to start the search from. If |
| 382 | * $PATH isn't exported, you lose. |
| 383 | */ |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 384 | #ifdef ALTSEP |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 385 | if (wcschr(prog, SEP) || wcschr(prog, ALTSEP)) |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 386 | #else |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 387 | if (wcschr(prog, SEP)) |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 388 | #endif |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 389 | wcsncpy(progpath, prog, MAXPATHLEN); |
| 390 | else if (path) { |
| 391 | while (1) { |
| 392 | wchar_t *delim = wcschr(path, DELIM); |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 393 | |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 394 | if (delim) { |
| 395 | size_t len = delim - path; |
| 396 | /* ensure we can't overwrite buffer */ |
| 397 | len = min(MAXPATHLEN,len); |
| 398 | wcsncpy(progpath, path, len); |
| 399 | *(progpath + len) = '\0'; |
| 400 | } |
| 401 | else |
| 402 | wcsncpy(progpath, path, MAXPATHLEN); |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 403 | |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 404 | /* join() is safe for MAXPATHLEN+1 size buffer */ |
| 405 | join(progpath, prog); |
| 406 | if (exists(progpath)) |
| 407 | break; |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 408 | |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 409 | if (!delim) { |
| 410 | progpath[0] = '\0'; |
| 411 | break; |
| 412 | } |
| 413 | path = delim + 1; |
| 414 | } |
| 415 | } |
| 416 | else |
| 417 | progpath[0] = '\0'; |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 418 | } |
| 419 | |
| 420 | static void |
Thomas Wouters | 7889010 | 2000-07-22 19:25:51 +0000 | [diff] [blame] | 421 | calculate_path(void) |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 422 | { |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 423 | wchar_t argv0_path[MAXPATHLEN+1]; |
| 424 | wchar_t *buf; |
| 425 | size_t bufsz; |
| 426 | wchar_t *pythonhome = Py_GetPythonHome(); |
| 427 | wchar_t *envpath = NULL; |
Guido van Rossum | eea1449 | 1997-08-13 21:30:44 +0000 | [diff] [blame] | 428 | |
Martin v. Löwis | 6238d2b | 2002-06-30 15:26:10 +0000 | [diff] [blame] | 429 | #ifdef MS_WINDOWS |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 430 | int skiphome, skipdefault; |
| 431 | wchar_t *machinepath = NULL; |
| 432 | wchar_t *userpath = NULL; |
| 433 | wchar_t zip_path[MAXPATHLEN+1]; |
| 434 | size_t len; |
Amaury Forgeot d'Arc | 66f8c43 | 2009-06-09 21:30:01 +0000 | [diff] [blame] | 435 | |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 436 | if (!Py_IgnoreEnvironmentFlag) { |
| 437 | envpath = _wgetenv(L"PYTHONPATH"); |
| 438 | } |
Amaury Forgeot d'Arc | 66f8c43 | 2009-06-09 21:30:01 +0000 | [diff] [blame] | 439 | #else |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 440 | char *_envpath = Py_GETENV("PYTHONPATH"); |
| 441 | wchar_t wenvpath[MAXPATHLEN+1]; |
| 442 | if (_envpath) { |
| 443 | size_t r = mbstowcs(wenvpath, _envpath, MAXPATHLEN+1); |
| 444 | envpath = wenvpath; |
| 445 | if (r == (size_t)-1 || r >= MAXPATHLEN) |
| 446 | envpath = NULL; |
| 447 | } |
Amaury Forgeot d'Arc | 66f8c43 | 2009-06-09 21:30:01 +0000 | [diff] [blame] | 448 | #endif |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 449 | |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 450 | get_progpath(); |
| 451 | /* progpath guaranteed \0 terminated in MAXPATH+1 bytes. */ |
| 452 | wcscpy(argv0_path, progpath); |
| 453 | reduce(argv0_path); |
| 454 | if (pythonhome == NULL || *pythonhome == '\0') { |
| 455 | if (search_for_prefix(argv0_path, LANDMARK)) |
| 456 | pythonhome = prefix; |
| 457 | else |
| 458 | pythonhome = NULL; |
| 459 | } |
| 460 | else |
| 461 | wcsncpy(prefix, pythonhome, MAXPATHLEN); |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 462 | |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 463 | if (envpath && *envpath == '\0') |
| 464 | envpath = NULL; |
Guido van Rossum | eea1449 | 1997-08-13 21:30:44 +0000 | [diff] [blame] | 465 | |
Guido van Rossum | e02e48b | 2000-03-29 01:49:47 +0000 | [diff] [blame] | 466 | |
Martin v. Löwis | 6238d2b | 2002-06-30 15:26:10 +0000 | [diff] [blame] | 467 | #ifdef MS_WINDOWS |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 468 | /* Calculate zip archive path */ |
| 469 | if (dllpath[0]) /* use name of python DLL */ |
| 470 | wcsncpy(zip_path, dllpath, MAXPATHLEN); |
| 471 | else /* use name of executable program */ |
| 472 | wcsncpy(zip_path, progpath, MAXPATHLEN); |
| 473 | zip_path[MAXPATHLEN] = '\0'; |
| 474 | len = wcslen(zip_path); |
| 475 | if (len > 4) { |
| 476 | zip_path[len-3] = 'z'; /* change ending to "zip" */ |
| 477 | zip_path[len-2] = 'i'; |
| 478 | zip_path[len-1] = 'p'; |
| 479 | } |
| 480 | else { |
| 481 | zip_path[0] = 0; |
| 482 | } |
| 483 | |
| 484 | skiphome = pythonhome==NULL ? 0 : 1; |
Martin v. Löwis | bc186a8 | 2009-02-02 15:32:22 +0000 | [diff] [blame] | 485 | #ifdef Py_ENABLE_SHARED |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 486 | machinepath = getpythonregpath(HKEY_LOCAL_MACHINE, skiphome); |
| 487 | userpath = getpythonregpath(HKEY_CURRENT_USER, skiphome); |
Martin v. Löwis | bc186a8 | 2009-02-02 15:32:22 +0000 | [diff] [blame] | 488 | #endif |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 489 | /* We only use the default relative PYTHONPATH if we havent |
| 490 | anything better to use! */ |
| 491 | skipdefault = envpath!=NULL || pythonhome!=NULL || \ |
| 492 | machinepath!=NULL || userpath!=NULL; |
Guido van Rossum | 43ff114 | 1998-08-08 23:40:40 +0000 | [diff] [blame] | 493 | #endif |
| 494 | |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 495 | /* We need to construct a path from the following parts. |
| 496 | (1) the PYTHONPATH environment variable, if set; |
| 497 | (2) for Win32, the zip archive file path; |
| 498 | (3) for Win32, the machinepath and userpath, if set; |
| 499 | (4) the PYTHONPATH config macro, with the leading "." |
| 500 | of each component replaced with pythonhome, if set; |
| 501 | (5) the directory containing the executable (argv0_path). |
| 502 | The length calculation calculates #4 first. |
| 503 | Extra rules: |
| 504 | - If PYTHONHOME is set (in any way) item (3) is ignored. |
| 505 | - If registry values are used, (4) and (5) are ignored. |
| 506 | */ |
Guido van Rossum | eea1449 | 1997-08-13 21:30:44 +0000 | [diff] [blame] | 507 | |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 508 | /* Calculate size of return buffer */ |
| 509 | if (pythonhome != NULL) { |
| 510 | wchar_t *p; |
| 511 | bufsz = 1; |
| 512 | for (p = PYTHONPATH; *p; p++) { |
| 513 | if (*p == DELIM) |
| 514 | bufsz++; /* number of DELIM plus one */ |
| 515 | } |
| 516 | bufsz *= wcslen(pythonhome); |
| 517 | } |
| 518 | else |
| 519 | bufsz = 0; |
| 520 | bufsz += wcslen(PYTHONPATH) + 1; |
| 521 | bufsz += wcslen(argv0_path) + 1; |
Martin v. Löwis | 6238d2b | 2002-06-30 15:26:10 +0000 | [diff] [blame] | 522 | #ifdef MS_WINDOWS |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 523 | if (userpath) |
| 524 | bufsz += wcslen(userpath) + 1; |
| 525 | if (machinepath) |
| 526 | bufsz += wcslen(machinepath) + 1; |
| 527 | bufsz += wcslen(zip_path) + 1; |
Guido van Rossum | eea1449 | 1997-08-13 21:30:44 +0000 | [diff] [blame] | 528 | #endif |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 529 | if (envpath != NULL) |
| 530 | bufsz += wcslen(envpath) + 1; |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 531 | |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 532 | module_search_path = buf = malloc(bufsz*sizeof(wchar_t)); |
| 533 | if (buf == NULL) { |
| 534 | /* We can't exit, so print a warning and limp along */ |
| 535 | fprintf(stderr, "Can't malloc dynamic PYTHONPATH.\n"); |
| 536 | if (envpath) { |
| 537 | fprintf(stderr, "Using environment $PYTHONPATH.\n"); |
| 538 | module_search_path = envpath; |
| 539 | } |
| 540 | else { |
| 541 | fprintf(stderr, "Using default static path.\n"); |
| 542 | module_search_path = PYTHONPATH; |
| 543 | } |
Martin v. Löwis | 6238d2b | 2002-06-30 15:26:10 +0000 | [diff] [blame] | 544 | #ifdef MS_WINDOWS |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 545 | if (machinepath) |
| 546 | free(machinepath); |
| 547 | if (userpath) |
| 548 | free(userpath); |
Martin v. Löwis | 6238d2b | 2002-06-30 15:26:10 +0000 | [diff] [blame] | 549 | #endif /* MS_WINDOWS */ |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 550 | return; |
| 551 | } |
Guido van Rossum | eea1449 | 1997-08-13 21:30:44 +0000 | [diff] [blame] | 552 | |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 553 | if (envpath) { |
| 554 | wcscpy(buf, envpath); |
| 555 | buf = wcschr(buf, L'\0'); |
| 556 | *buf++ = DELIM; |
| 557 | } |
Martin v. Löwis | 6238d2b | 2002-06-30 15:26:10 +0000 | [diff] [blame] | 558 | #ifdef MS_WINDOWS |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 559 | if (zip_path[0]) { |
| 560 | wcscpy(buf, zip_path); |
| 561 | buf = wcschr(buf, L'\0'); |
| 562 | *buf++ = DELIM; |
| 563 | } |
| 564 | if (userpath) { |
| 565 | wcscpy(buf, userpath); |
| 566 | buf = wcschr(buf, L'\0'); |
| 567 | *buf++ = DELIM; |
| 568 | free(userpath); |
| 569 | } |
| 570 | if (machinepath) { |
| 571 | wcscpy(buf, machinepath); |
| 572 | buf = wcschr(buf, L'\0'); |
| 573 | *buf++ = DELIM; |
| 574 | free(machinepath); |
| 575 | } |
| 576 | if (pythonhome == NULL) { |
| 577 | if (!skipdefault) { |
| 578 | wcscpy(buf, PYTHONPATH); |
| 579 | buf = wcschr(buf, L'\0'); |
| 580 | } |
| 581 | } |
Guido van Rossum | 88716bb | 2000-03-30 19:45:39 +0000 | [diff] [blame] | 582 | #else |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 583 | if (pythonhome == NULL) { |
| 584 | wcscpy(buf, PYTHONPATH); |
| 585 | buf = wcschr(buf, L'\0'); |
| 586 | } |
Martin v. Löwis | 6238d2b | 2002-06-30 15:26:10 +0000 | [diff] [blame] | 587 | #endif /* MS_WINDOWS */ |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 588 | else { |
| 589 | wchar_t *p = PYTHONPATH; |
| 590 | wchar_t *q; |
| 591 | size_t n; |
| 592 | for (;;) { |
| 593 | q = wcschr(p, DELIM); |
| 594 | if (q == NULL) |
| 595 | n = wcslen(p); |
| 596 | else |
| 597 | n = q-p; |
| 598 | if (p[0] == '.' && is_sep(p[1])) { |
| 599 | wcscpy(buf, pythonhome); |
| 600 | buf = wcschr(buf, L'\0'); |
| 601 | p++; |
| 602 | n--; |
| 603 | } |
| 604 | wcsncpy(buf, p, n); |
| 605 | buf += n; |
| 606 | if (q == NULL) |
| 607 | break; |
| 608 | *buf++ = DELIM; |
| 609 | p = q+1; |
| 610 | } |
| 611 | } |
| 612 | if (argv0_path) { |
| 613 | *buf++ = DELIM; |
| 614 | wcscpy(buf, argv0_path); |
| 615 | buf = wcschr(buf, L'\0'); |
| 616 | } |
| 617 | *buf = L'\0'; |
| 618 | /* Now to pull one last hack/trick. If sys.prefix is |
| 619 | empty, then try and find it somewhere on the paths |
| 620 | we calculated. We scan backwards, as our general policy |
| 621 | is that Python core directories are at the *end* of |
| 622 | sys.path. We assume that our "lib" directory is |
| 623 | on the path, and that our 'prefix' directory is |
| 624 | the parent of that. |
| 625 | */ |
| 626 | if (*prefix==L'\0') { |
| 627 | wchar_t lookBuf[MAXPATHLEN+1]; |
| 628 | wchar_t *look = buf - 1; /* 'buf' is at the end of the buffer */ |
| 629 | while (1) { |
| 630 | Py_ssize_t nchars; |
| 631 | wchar_t *lookEnd = look; |
| 632 | /* 'look' will end up one character before the |
| 633 | start of the path in question - even if this |
| 634 | is one character before the start of the buffer |
| 635 | */ |
| 636 | while (look >= module_search_path && *look != DELIM) |
| 637 | look--; |
| 638 | nchars = lookEnd-look; |
| 639 | wcsncpy(lookBuf, look+1, nchars); |
| 640 | lookBuf[nchars] = L'\0'; |
| 641 | /* Up one level to the parent */ |
| 642 | reduce(lookBuf); |
| 643 | if (search_for_prefix(lookBuf, LANDMARK)) { |
| 644 | break; |
| 645 | } |
| 646 | /* If we are out of paths to search - give up */ |
| 647 | if (look < module_search_path) |
| 648 | break; |
| 649 | look--; |
| 650 | } |
| 651 | } |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 652 | } |
| 653 | |
| 654 | |
| 655 | /* External interface */ |
| 656 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 657 | wchar_t * |
Thomas Wouters | 7889010 | 2000-07-22 19:25:51 +0000 | [diff] [blame] | 658 | Py_GetPath(void) |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 659 | { |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 660 | if (!module_search_path) |
| 661 | calculate_path(); |
| 662 | return module_search_path; |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 663 | } |
| 664 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 665 | wchar_t * |
Thomas Wouters | 7889010 | 2000-07-22 19:25:51 +0000 | [diff] [blame] | 666 | Py_GetPrefix(void) |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 667 | { |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 668 | if (!module_search_path) |
| 669 | calculate_path(); |
| 670 | return prefix; |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 671 | } |
| 672 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 673 | wchar_t * |
Thomas Wouters | 7889010 | 2000-07-22 19:25:51 +0000 | [diff] [blame] | 674 | Py_GetExecPrefix(void) |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 675 | { |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 676 | return Py_GetPrefix(); |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 677 | } |
| 678 | |
Martin v. Löwis | 790465f | 2008-04-05 20:41:37 +0000 | [diff] [blame] | 679 | wchar_t * |
Thomas Wouters | 7889010 | 2000-07-22 19:25:51 +0000 | [diff] [blame] | 680 | Py_GetProgramFullPath(void) |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 681 | { |
Antoine Pitrou | 7f14f0d | 2010-05-09 16:14:21 +0000 | [diff] [blame] | 682 | if (!module_search_path) |
| 683 | calculate_path(); |
| 684 | return progpath; |
Guido van Rossum | 1aa7e3a | 1997-05-19 14:16:21 +0000 | [diff] [blame] | 685 | } |