NAME

       XtFindFile - search for a file using substitutions in the path list

SYNTAX

       String  XtFindFile(String  path,  Substitution substitutions, Cardinal num_substitutions, XtFilePredicate
              predicate);

ARGUMENTS

       path      Specifies a path of file names, including substitution characters.

       substitutions
                 Specifies a list of substitutions to make into a path.

       num_substitutions
                 Specifies the number of substitutions passed in.

       predicate Specifies a procedure to call to judge a potential file name, or NULL.

DESCRIPTION

       The path parameter specifies a string that consists of a series of  potential  file  names  delimited  by
       colons.   Within  each  name,  the  percent  character  specifies  a  string substitution selected by the
       following character.  The character sequence ``%:'' specifies an embedded colon that is not a  delimiter;
       the  sequence is replaced by a single colon.  The character sequence ``%%'' specifies a percent character
       that does not introduce a substitution; the sequence is replaced by a single  percent  character.   If  a
       percent   character  is  followed  by  any  other  character,  XtFindFile  looks  through  the  specified
       substitutions for that character in the  match  field  and  if  found  replaces  the  percent  and  match
       characters  with  the string in the corresponding substitution field.  A substitution field entry of NULL
       is equivalent to a pointer to an empty string.  If the  operating  system  does  not  interpret  multiple
       embedded  name  separators  in  the  path  (i.e.,  ``/''  in  POSIX)  the same way as a single separator,
       XtFindFile will collapse multiple separators into a single one after performing all string substitutions.
       Except for collapsing embedded separators, the contents of the string substitutions are  not  interpreted
       by  XtFindFile  and may therefore contain any operating-system-dependent characters, including additional
       name separators.  Each resulting string is passed to the predicate procedure until a string is found  for
       which  the procedure returns True; this string is the return value for XtFindFile.  If no string yields a
       True return from the predicate, XtFindFile returns NULL.

       If the predicate parameter is NULL, an internal procedure that checks if the file  exists,  is  readable,
       and is not a directory will be used.

       It  is  the  responsibility  of  the caller to free the returned string using XtFree when it is no longer
       needed.

SEE ALSO

       X Toolkit Intrinsics - C Language Interface
       Xlib - C Language X Interface

X Version 11                                       libXt 1.1.5                                     XtFindFile(3)