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(*
HLins: insert http-links into HTML documents.
See http://www.lri.fr/~treinen/hlins
Copyright (C) 1999 Ralf Treinen <treinen@lri.fr>
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, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*)
{
let ln = ref 1;; (* line number *)
exception Error_lex of int*string;;
exception Eof;;
}
let linespace = [' ''\t']
(*
next_name_tab_url: called when we expect a name. Ignore any line
that starts with the comment sign, and any white space. We accept
as a name any string that does not contain "=" or newline, and that
does not end or start on white space. The character "=" can be
escaped as "==".
*)
rule next_name_sep_url = parse
'#'[^'\n']*('\n') { incr ln; next_name_sep_url lexbuf }
| linespace+ { next_name_sep_url lexbuf }
| '\n' { incr ln; next_name_sep_url lexbuf }
| [^' ''#''\t''\n''='](([^'=''\n']|"==")*[^' ''\t''\n''='])?
{ let name = Lexing.lexeme lexbuf
in (name , sep_url lexbuf) }
| eof { raise Eof }
(* separator *)
and sep_url = parse
linespace* '=' linespace* { url lexbuf }
| _ { raise (Error_lex (!ln,"No separator found"))}
(*
any non-empty string up to the end of the line is accepted as url
*)
and url = parse
[^'\n']+ { Lexing.lexeme lexbuf }
| ('\n'|eof) { raise (Error_lex (!ln,"No URL found"))}
|
