[W32] Make use of the LANGUAGE envvar.

NEWS

@@ -1,6 +1,11 @@
 Noteworthy changes in version 1.4.7
 ------------------------------------------------
 
+    * [W32] The environment variable LANGUAGE may be used to override
+      the language given by HKCU\Software\GNU\GnuPG:Lang.  The
+      language files "*.mo" are expected in a directory named
+      "gnupg.nls" below the directory with the gpg.exe binary.
+
 
 Noteworthy changes in version 1.4.6 (2006-12-06)
 ------------------------------------------------

util/ChangeLog

@@ -1,3 +1,8 @@
+2007-02-26  Werner Koch  <wk@g10code.com>
+
+	* simple-gettext.c (set_gettext_file): Make use of the envvar
+	LANGUAGE to allow overriding of the registry setting.
+
 2007-02-12  Werner Koch  <wk@g10code.com>
 
 	* secmem.c (ptr_into_pool_p): New.

util/simple-gettext.c

@@ -43,6 +43,7 @@
 #include "types.h"
 #include "util.h"
 
+#include "windows.h" /* For GetModuleFileName.  */
 
 /* The magic number of the GNU message catalog format.	*/
 #define MAGIC	      0x950412de
@@ -232,33 +233,75 @@ load_domain( const char *filename )
 }
 
 
-/****************
+/* Set the file used for translations.  Pass a NULL to disable
- * Set the file used for translations. Pass a NULL to disable
+   translation.  A new filename may be set at anytime.  WARNING: After
- * translation.  A new filename may be set at anytime.  If REGKEY is
+   changing the filename you should not access any data retrieved by
- * not NULL, the function tries to selected the language the registry
+   gettext().
- * key "Lang" below that key.  WARNING: After changing the filename you
+
- * should not access any data retrieved by gettext().
+   If REGKEY is not NULL, the function tries to selected the language
+   the registry key "Lang" below that key.  If in addition the
+   environment variable LANGUAGE has been set, that value will
+   override a value set by the registry key.
  */
 int
 set_gettext_file ( const char *filename, const char *regkey )
 {
   struct loaded_domain *domain = NULL;
 
-    if( filename && *filename ) {
+  if ( filename && *filename )
+    {
       if ( filename[0] == '/'
 #ifdef HAVE_DRIVE_LETTERS
            || ( isalpha(filename[0])
                 && filename[1] == ':'
                 && (filename[2] == '/' || filename[2] == '\\') )
 #endif
-	   ) {
+	   )
+        {
           /* absolute path - use it as is */
           domain = load_domain( filename );
 	}
-	else if (regkey) { /* Standard.  */
+      else if (regkey)  /* Standard.  */
+        {
           char *instdir, *langid, *fname;
           char *p;
+          int envvar_mode = 0;
           
+        again:
+          if (!envvar_mode && (p = getenv ("LANGUAGE")) && *p)
+            {
+              envvar_mode = 1;
+              langid = malloc (strlen (p)+1);
+              if (!langid)
+                return -1;
+              strcpy (langid, p);
+              /* We only make use of the first language given.  Strip
+                 the rest.  */
+              p = strchr (langid, ':');
+              if (p)
+                *p = 0;
+              
+              /* In the $LANGUAGE case we do not use the registered
+                 installation directory but the one where the gpg
+                 binary has been found.  */
+              instdir = malloc (MAX_PATH+5);
+              if ( !instdir || !GetModuleFileName (NULL, instdir, MAX_PATH) )
+                {
+                  free (langid);
+                  free (instdir);
+                  return -1; /* Error getting the process' file name.  */
+                }
+              p = strrchr (instdir, DIRSEP_C);
+              if (!p)
+                {
+                  free (langid);
+                  free (instdir);
+                  return -1; /* Invalid file name returned.  */
+                }
+              *p = 0;
+            }
+          else
+            {
               instdir = read_w32_registry_string ("HKEY_LOCAL_MACHINE",
                                                   regkey,
                                                   "Install Directory");
@@ -267,24 +310,27 @@ set_gettext_file ( const char *filename, const char *regkey )
               langid = read_w32_registry_string (NULL, /* HKCU then HKLM */
                                                  regkey,
                                                  "Lang");
-            if (!langid) {
+              if (!langid)
+                {
                   free (instdir);
                   return -1;
                 }
+            }
+          
           /* Strip stuff after a dot in case the user tried to enter
-             * the entire locale synatcs as usual for POSIX. */
+             the entire locale syntacs as usual for POSIX.  */
           p = strchr (langid, '.');
           if (p)
             *p = 0;
           
           /* Build the key: "<instdir>/<domain>.nls/<langid>.mo" We
-               use a directory below the installation directory with
+             use a directory below the installation directory with the
-               the domain included in case the software has been
+             domain included in case the software has been insalled
-               insalled with other software altogether at the same
+             with other software altogether at the same place.  */
-               place. */
           fname = malloc (strlen (instdir) + 1 + strlen (filename) + 5
                           + strlen (langid) + 3 + 1);
-            if (!fname) {
+          if (!fname)
+            {
               free (instdir);
               free (langid);
               return -1;
@@ -294,26 +340,39 @@ set_gettext_file ( const char *filename, const char *regkey )
           free (instdir);
           free (langid);
 
-            /* Better make sure that we don't mix forward and
+          /* Better make sure that we don't mix forward and backward
-               backward slashes.  It seems that some Windoze
+             slashes.  It seems that some Windoze versions don't
-               versions don't accept this. */
+             accept this. */
-            for (p=fname; *p; p++) {
+          for (p=fname; *p; p++) 
+            {
               if (*p == '/')
                 *p = '\\';
             }
           domain = load_domain (fname);
           free(fname);
+
+          if (!domain && envvar_mode == 1)
+            {
+              /* In case it failed, we try again using the registry
+                 method. */
+              envvar_mode++;
+              goto again;
             }
+	}
+      
 
       if (!domain)
         return -1;
     }
 
-    if( the_domain ) {
+  if ( the_domain )
+    {
       struct overflow_space_s *os, *os2;
+
       free ( the_domain->data );
       free ( the_domain->mapped );
-        for (os=the_domain->overflow_space; os; os = os2) {
+      for (os=the_domain->overflow_space; os; os = os2)
+        {
           os2 = os->next;
           free (os);
         }