support define_macros / undef_macros in setup.cfg

PC/getpathp.c

 
 /* Return the initial module search path. */
 /* Used by DOS, OS/2, Windows 3.1, Windows 95/98, Windows NT. */
 
 /* ----------------------------------------------------------------
    PATH RULES FOR WINDOWS:
    This describes how sys.path is formed on Windows.  It describes the
    functionality, not the implementation (ie, the order in which these
    are actually fetched is different)
 
@@ skipping 405 matching lines @@
                 progpath[0] = '\0';
                 break;
             }
             path = delim + 1;
         }
     }
     else
         progpath[0] = '\0';
 }
 
-static int
-find_env_config_value(FILE * env_file, const wchar_t * key, wchar_t * value)
-{
-    int result = 0; /* meaning not found */
-    char buffer[MAXPATHLEN*2+1];  /* allow extra for key, '=', etc. */
-
-    fseek(env_file, 0, SEEK_SET);
-    while (!feof(env_file)) {
-        char * p = fgets(buffer, MAXPATHLEN*2, env_file);
-        wchar_t tmpbuffer[MAXPATHLEN*2+1];
-        PyObject * decoded;
-        int n;
-
-        if (p == NULL)
-            break;
-        n = strlen(p);
-        if (p[n - 1] != '\n') {
-            /* line has overflowed - bail */
-            break;
-        }
-        if (p[0] == '#')    /* Comment - skip */
-            continue;
-        decoded = PyUnicode_DecodeUTF8(buffer, n, "surrogateescape");
-        if (decoded != NULL) {
-            Py_ssize_t k;
-            k = PyUnicode_AsWideChar(decoded,
-                                     tmpbuffer, MAXPATHLEN * 2);
-            Py_DECREF(decoded);
-            if (k >= 0) {
-                wchar_t * tok = wcstok(tmpbuffer, L" \t\r\n");
-                if ((tok != NULL) && !wcscmp(tok, key)) {
-                    tok = wcstok(NULL, L" \t");
-                    if ((tok != NULL) && !wcscmp(tok, L"=")) {
-                        tok = wcstok(NULL, L"\r\n");
-                        if (tok != NULL) {
-                            wcsncpy(value, tok, MAXPATHLEN);
-                            result = 1;
-                            break;
-                        }
-                    }
-                }
-            }
-        }
-    }
-    return result;
-}
-
 static void
 calculate_path(void)
 {
     wchar_t argv0_path[MAXPATHLEN+1];
     wchar_t *buf;
     size_t bufsz;
     wchar_t *pythonhome = Py_GetPythonHome();
     wchar_t *envpath = NULL;
 
 #ifdef MS_WINDOWS
@@ skipping 14 matching lines @@
         envpath = wenvpath;
         if (r == (size_t)-1 || r >= MAXPATHLEN)
             envpath = NULL;
     }
 #endif
 
     get_progpath();
     /* progpath guaranteed \0 terminated in MAXPATH+1 bytes. */
     wcscpy(argv0_path, progpath);
     reduce(argv0_path);
-
-    /* Search for an environment configuration file, first in the
-       executable's directory and then in the parent directory.
-       If found, open it for use when searching for prefixes.
-    */
-
-    {
-        wchar_t tmpbuffer[MAXPATHLEN+1];
-        wchar_t *env_cfg = L"pyvenv.cfg";
-        FILE * env_file = NULL;
-
-        wcscpy(tmpbuffer, argv0_path);
-        join(tmpbuffer, env_cfg);
-        env_file = _Py_wfopen(tmpbuffer, L"r");
-        if (env_file == NULL) {
-            errno = 0;
-            reduce(tmpbuffer);
-            reduce(tmpbuffer);
-            join(tmpbuffer, env_cfg);
-            env_file = _Py_wfopen(tmpbuffer, L"r");
-            if (env_file == NULL) {
-                errno = 0;
-            }
-        }
-        if (env_file != NULL) {
-            /* Look for a 'home' variable and set argv0_path to it, if found */
-            if (find_env_config_value(env_file, L"home", tmpbuffer)) {
-                wcscpy(argv0_path, tmpbuffer);
-            }
-            fclose(env_file);
-            env_file = NULL;
-        }
-    }
-
     if (pythonhome == NULL || *pythonhome == '\0') {
         if (search_for_prefix(argv0_path, LANDMARK))
             pythonhome = prefix;
         else
             pythonhome = NULL;
     }
     else
         wcsncpy(prefix, pythonhome, MAXPATHLEN);
 
     if (envpath && *envpath == '\0')
@@ skipping 265 matching lines @@
     hPython3 = LoadLibraryExW(py3path, NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
     if (hPython3 != NULL)
         return 1;
 
     /* Check sys.prefix\DLLs\python3.dll */
     wcscpy(py3path, Py_GetPrefix());
     wcscat(py3path, L"\\DLLs\\python3.dll");
     hPython3 = LoadLibraryExW(py3path, NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
     return hPython3 != NULL;
 }