(*
* Xml Light, an small Xml parser/printer with DTD support.
* Copyright (C) 2003 Nicolas Cannasse ([email protected])
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*)
(** Xml Light Parser
While basic parsing functions can be used in the {!Xml} module, this module
is providing a way to create, configure and run an Xml parser.
*)
(** An Xml node is either
[Element (tag-name, attributes, children)] or [PCData text] *)
type xml = Xml_datatype.xml
(** Abstract type for an Xml parser. *)
type t
(** {6:exc Xml Exceptions} *)
(** Several exceptions can be raised when parsing an Xml document : {ul
{li {!Xml.Error} is raised when an xml parsing error occurs. the
{!Xml.error_msg} tells you which error occurred during parsing
and the {!Xml.error_pos} can be used to retrieve the document
location where the error occurred at.}
{li {!Xml.File_not_found} is raised when an error occurred while
opening a file with the {!Xml.parse_file} function.}
}
*)
type error_pos
type error_msg =
| UnterminatedComment
| UnterminatedString
| UnterminatedEntity
| IdentExpected
| CloseExpected
| NodeExpected
| AttributeNameExpected
| AttributeValueExpected
| EndOfTagExpected of string
| EOFExpected
| Empty
type error = error_msg * error_pos
exception Error of error
exception File_not_found of string
(** Get a full error message from an Xml error. *)
val error : error -> string
(** Get the Xml error message as a string. *)
val error_msg : error_msg -> string
(** Get the line the error occurred at. *)
val line : error_pos -> int
(** Get the relative character range (in current line) the error occurred at.*)
val range : error_pos -> int * int
(** Get the absolute character range the error occurred at. *)
val abs_range : error_pos -> int * int
val pos : Lexing.lexbuf -> error_pos
(** Several kind of resources can contain Xml documents. *)
type source =
| SChannel of in_channel
| SString of string
| SLexbuf of Lexing.lexbuf
(** This function returns a new parser with default options. *)
val make : source -> t
(** When a Xml document is parsed, the parser may check that the end of the
document is reached, so for example parsing ["<A/><B/>"] will fail instead
of returning only the A element. You can turn on this check by setting
[check_eof] to [true] {i (by default, check_eof is false, unlike
in the original Xmllight)}. *)
val check_eof : t -> bool -> unit
(** Once the parser is configured, you can run the parser on a any kind
of xml document source to parse its contents into an Xml data structure.
When [do_not_canonicalize] is set, the XML document is given as
is, without trying to remove blank PCDATA elements. *)
val parse : ?do_not_canonicalize:bool -> t -> xml
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