gpgtar: Make --files-from and --null work as described.

* tools/gpgtar-create.c (gpgtar_create): Add args files_from and
null_names.  Improve reading from a file.
* tools/gpgtar.c: Make global vars static.
(main): Remove tests for --files-from and --null option combinations.
Pass option variables to gpgtar_create.
--

GnuPG-bug-id: 5027
Signed-off-by: Werner Koch <wk@gnupg.org>

common/stringhelp.c

@@ -213,6 +213,36 @@ trim_spaces( char *str )
     return str ;
 }
 
+
+/* Same as trim_spaces but only condider, space, tab, cr and lf as space.  */
+char *
+ascii_trim_spaces (char *str)
+{
+  char *string, *p, *mark;
+
+  string = str;
+
+  /* Find first non-ascii space character.  */
+  for (p=string; *p && ascii_isspace (*p); p++)
+    ;
+  /* Move characters.  */
+  for (mark=NULL; (*string = *p); string++, p++ )
+    {
+      if (ascii_isspace (*p))
+        {
+          if (!mark)
+            mark = string;
+        }
+      else
+        mark = NULL ;
+    }
+  if (mark)
+    *mark = '\0' ;  /* Remove trailing spaces. */
+
+  return str ;
+}
+
+
 /****************
  * remove trailing white spaces
  */

common/stringhelp.h

@@ -42,6 +42,7 @@ char *has_leading_keyword (const char *string, const char *keyword);
 const char *memistr (const void *buf, size_t buflen, const char *sub);
 char *mem2str( char *, const void *, size_t);
 char *trim_spaces( char *string );
+char *ascii_trim_spaces (char *string);
 char *trim_trailing_spaces( char *string );
 unsigned int trim_trailing_chars( unsigned char *line, unsigned len,
 					      const char *trimchars);

common/utf8conv.c

@@ -803,7 +803,7 @@ wchar_to_native (const wchar_t *string)
 }
 
 
-/* Return a malloced wide char string from an UTF-8 encoded input
+/* Return a malloced wide char string from native encoded input
  * string STRING.  Caller must free this value.  Returns NULL and sets
  * ERRNO on failure.  Calling this function with STRING set to NULL is
  * not defined.  */