| /* |
| * R : A Computer Language for Statistical Data Analysis |
| * Copyright (C) 1999--2010 Guido Masarotto and Brian Ripley |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, a copy is available at |
| * https://www.R-project.org/Licenses/ |
| */ |
| |
| |
| #ifdef HAVE_CONFIG_H |
| #include <config.h> |
| #endif |
| #undef sprintf |
| |
| #define WIN32_LEAN_AND_MEAN 1 |
| #include <windows.h> |
| #include <string.h> /* for strrchr(...) */ |
| #include <stdio.h> |
| #include <ctype.h> |
| #include <stdlib.h> /* for exit */ |
| |
| static char rhomebuf[MAX_PATH]; |
| |
| /* <MBCS-FIXME> We can't just use Rf_strchr as this is called |
| from front-ends */ |
| #define GOBACKONESLASH \ |
| p = strrchr(rhomebuf,'\\'); \ |
| if (!p) { \ |
| MessageBox(NULL, "Installation problem", "Terminating", \ |
| MB_TASKMODAL | MB_ICONSTOP | MB_OK);\ |
| exit(1); \ |
| } \ |
| *p = '\0' |
| |
| /* get R_HOME from the module path: used in RSetReg */ |
| char *getRHOMElong(int m) |
| { |
| char *p; |
| |
| GetModuleFileName(NULL, rhomebuf, MAX_PATH); |
| for(int i=0; i < m; i++) {GOBACKONESLASH;} |
| return (rhomebuf); |
| } |
| |
| /* get no-spaces version of R_HOME from the module path: |
| used in Rgui, Rterm and Rcmd |
| */ |
| char *getRHOME(int m) |
| { |
| char *p; |
| int hasspace = 0; |
| |
| getRHOMElong(m); |
| /* make sure no spaces in path */ |
| for (p = rhomebuf; *p; p++) |
| if (isspace(*p)) { hasspace = 1; break; } |
| if (hasspace) |
| /* NOTE: this fails when short names are not enabled */ |
| GetShortPathName(rhomebuf, rhomebuf, MAX_PATH); |
| return (rhomebuf); |
| } |
| |
| |
| /* get R_HOME from environment or registry: used in embedded apps */ |
| char *get_R_HOME(void) |
| { |
| LONG rc; |
| HKEY hkey; |
| DWORD keytype = REG_SZ, cbData = sizeof(rhomebuf); |
| |
| /* First try the C environment space */ |
| if(getenv("R_HOME")) { |
| strncpy(rhomebuf, getenv("R_HOME"), MAX_PATH); |
| return (rhomebuf); |
| } |
| |
| /* Then the Windows API environment space */ |
| if (GetEnvironmentVariable ("R_HOME", rhomebuf, sizeof (rhomebuf)) > 0) |
| return (rhomebuf); |
| |
| /* And then the registry */ |
| rc = RegOpenKeyEx(HKEY_LOCAL_MACHINE, "Software\\R-core\\R", 0, |
| KEY_READ, &hkey); |
| if (rc == ERROR_SUCCESS) { |
| rc = RegQueryValueEx(hkey, "InstallPath", 0, &keytype, |
| (LPBYTE) rhomebuf, &cbData); |
| RegCloseKey (hkey); |
| } else return NULL; |
| if (rc != ERROR_SUCCESS) return NULL; |
| return rhomebuf; |
| } |